阅读说明：本技术 一种机车用三工位隔离开关及其使用方法 (Three-station isolating switch for locomotive and use method thereof ) 是由 李嘉 董晖 李毅 刘立华 徐安博 于 2021-06-22 设计创作，主要内容包括：本发明公开了一种机车用三工位隔离开关及其使用方法,该开关包括第一进线位,用于选通车间电源给出线位供电的线路；第二进线位,用于选通出线位接地的线路；第三进线位,用于选通受电弓给出线位供电的线路；操作机构,检测器和架体；该方法包括步骤：一、隔离开关工作类型的分类；二、车间电源给出线位供电；三、出线位接地；四、受电弓给出线位供电。本发明结构简单,设计合理,通过设置隔离刀组件将第一进线位与出线位、第二进线位与出线位,或第三进线位与出线位连接导通,有效避免第一进线位、第二进线位和第三进线位同时与出线位连接导通,进而避免了车间电源和受电弓同时对列车进行供电,有效实现该隔离开关的机械闭锁,保证供电安全。(The invention discloses a three-position isolating switch for a locomotive and a using method thereof, wherein the switch comprises a first incoming line position for gating a line for supplying power to an outgoing line position by a workshop power supply; the second wire inlet position is used for gating the grounded line of the wire outlet position; the third wire inlet position is used for gating a wire for supplying power to the wire outlet position by the pantograph; an operating mechanism, a detector and a frame body; the method comprises the following steps: classifying the working types of the isolating switches; secondly, supplying power to a line position by a workshop power supply; thirdly, grounding the outlet wire; and fourthly, supplying power to the wire position by the pantograph. The isolation switch is simple in structure and reasonable in design, the isolation knife assembly is arranged to connect and conduct the first wire inlet position and the wire outlet position, the second wire inlet position and the wire outlet position, or the third wire inlet position and the wire outlet position, so that the first wire inlet position, the second wire inlet position and the third wire inlet position are effectively prevented from being simultaneously connected and conducted with the wire outlet position, a workshop power supply and a pantograph are further prevented from simultaneously supplying power to a train, mechanical locking of the isolation switch is effectively achieved, and power supply safety is guaranteed.)

1. The utility model provides a three station isolator for locomotive which characterized in that: comprises that

The first wire inlet position is used for gating a line which is used for supplying power to the wire outlet position by a workshop power supply;

the second wire inlet position is used for gating the grounded line of the wire outlet position;

the third wire inlet position is used for gating a wire for supplying power to the wire outlet position by the pantograph;

the operating mechanism is used for driving the isolation knife assembly to rotate so as to enable the wire outlet position to be connected and conducted with the first wire inlet position, the second wire inlet position or the third wire inlet position;

a detector for detecting a conduction signal of the first, second or third incoming line bit;

the support body is used for installing a first wire inlet position, a second wire inlet position, a third wire inlet position, a wire outlet position, an operating mechanism and a detector.

2. A three-position disconnector for locomotives according to claim 1, characterized in that: the support body is including operating panel (3), first vertical mounting panel (4) and the vertical mounting panel of second (5) that are parallel arrangement, it is gapped to be provided with between operating panel (3) and first vertical mounting panel (4), connect as an organic wholely through a plurality of horizontal connecting post (6) between operating panel (3) and the first vertical mounting panel (4), first inlet wire position the second inlet wire position the third inlet wire position with the outlet wire position all is located between first vertical mounting panel (4) and the vertical mounting panel of second (5).

3. A three-position disconnector for locomotives according to claim 2, characterized in that: the first wire inlet position comprises two first double-layer insulating rods (7) which are arranged between a first vertical mounting plate (4) and a second vertical mounting plate (5) and a first wire inlet plate (8) which is sleeved on the two first double-layer insulating rods (7), and a first wire connecting terminal is arranged on the first wire inlet plate (8);

the second wire inlet position comprises two second double-layer insulating rods (9) which are arranged between the first vertical mounting plate (4) and the second vertical mounting plate (5) and a plurality of second wire inlet plates (10) which are sleeved on the two second double-layer insulating rods (9), and second wire connecting terminals are arranged on the second wire inlet plates (10);

the third wire inlet position comprises two third double-layer insulating rods (11) which are arranged between the first vertical mounting plate (4) and the second vertical mounting plate (5) and a third wire inlet plate (12) sleeved on the two third double-layer insulating rods (11), and a third wire connecting terminal is arranged on the third wire inlet plate (12);

the outlet wire position includes two outlet plate installation poles (13) that all set up between first vertical mounting panel (4) and second vertical mounting panel (5) to and a plurality of outlet plate (14) of establishing on two outlet plate installation poles (13) all, be provided with outlet terminal on outlet plate (14).

4. A three-position disconnector for locomotives according to claim 3, characterized in that: the number of the first wire inlet plates (8) on the first double-layer insulating rod (7) is two, the first wiring terminal of one first wire inlet plate (8) in the two first wire inlet plates (8) is a positive wiring terminal, and the first wiring terminal of the other first wire inlet plate (8) is a negative wiring terminal;

the number of third line incoming board (12) is two on third double-deck insulator spindle (11), two the third binding post of a third line incoming board (12) is positive binding post in third line incoming board (12), and the third binding post of another third line incoming board (12) is negative binding post.

5. A three-position disconnector for locomotives according to claim 3, characterized in that: the isolating knife assembly comprises a plurality of isolating knives, the number of the isolating knives is equal to that of the second wire inlet plates (10), the number of the second wire outlet plates (14) is equal to that of the second wire inlet plates, the isolating knives correspond to that of the wire outlet plates (14) one by one, each isolating knife comprises two isolating knife plates (15) which are arranged in parallel, one ends of the two isolating knife plates (15) are hinged with the wire outlet plates (14) through first connecting pieces, and the other ends of the two isolating knife plates (15) are connected into a whole through second connecting pieces;

two the tip medial surface of isolation cutting board (15) all is provided with first line inlet board (8), second line inlet board (10), third line inlet board (12) and outlet plate (14) contact conductive contact (19), two the other end of isolation cutting board (15) all be provided with the connecting hole and with the open slot of connecting hole intercommunication, the second connecting piece is worn to establish between the connecting hole of two isolation cutting boards (15).

6. A three-position disconnector for locomotives according to claim 2, characterized in that: the operating mechanism comprises an operating handle (2), a transmission component connected with the operating handle (2), and a self-locking device used for locking the rotation position of the transmission component;

the transmission component comprises a main shaft (20) arranged between an operation panel (3) and a second vertical mounting plate (5), a first bearing, a first positioning connecting piece (22), an articulated frame (23), a second positioning connecting piece (24), a thrust piece (25) and a second bearing (26) which are sequentially sleeved on the main shaft (20), wherein two ends of the main shaft (20) respectively extend out of the operation panel (3) and the second vertical mounting plate (5), an operation handle (2) and the main shaft (20) are fixedly connected with the end part of the operation panel (3), the first bearing is fixedly connected with the inner side surface of the operation panel (3), the first positioning connecting piece (22), the articulated frame (23), the second positioning connecting piece (24) and the thrust piece (25) are positioned between the first vertical mounting plate (4) and the second vertical mounting plate (5), and the outer side surface of the thrust piece (25) is attached to the inner side surface of the second vertical mounting plate (5), the second bearing (26) is fixedly connected with the outer side face of the second vertical mounting plate (5);

articulated frame (23) are last to be provided with a plurality of articulated seats, and are a plurality of the quantity of articulated seat, a plurality of keep apart the quantity of sword and a plurality of the quantity of insulating pull rod (1) is equal and the one-to-one, the one end of insulating pull rod (1) with articulated seat is articulated, the other end of insulating pull rod (1) articulates between two isolation cutting board (15) of keeping apart the sword.

7. A three-position disconnecting switch for a locomotive according to claim 6, wherein: the self-locking device comprises a limiting clamping plate (27) which is sleeved on the main shaft (20) and synchronously rotates with the main shaft (20), self-resetting clamping pieces which are arranged on the operation panel (3) and used for limiting the rotation of the limiting clamping plate (27), and a travel switch (28) used for detecting resetting signals of the self-resetting clamping pieces;

three clamping grooves are formed in the limiting clamping plate (27) along the circumferential direction of the limiting clamping plate, and the three clamping grooves are a first clamping groove (29), a second clamping groove (30) and a third clamping groove (31);

the self-resetting fastener comprises a guide sleeve (32) arranged on the inner side surface of the operation panel (3), a resetting torsion spring (33) sleeved on the guide sleeve (32), a rotating shaft (34) penetrating through the guide sleeve (32), an unlocking handle (35) and a stroke limiting block (36), wherein the unlocking handle (35) is sleeved on the rotating shaft (34) and is positioned on the outer side of the operation panel (3), the stroke limiting block (36) is provided with a limiting pin (37) in clamping fit with the first clamping groove (29), the second clamping groove (30) or the third clamping groove (31), and the stroke switch (28) is positioned below the stroke limiting block (36);

the inner side surface of the operation panel (3) is further provided with a fixing column (38) used for fixing a reset torsion spring (33) and a limiting column (39) used for limiting the rotating position of the rotating shaft (34), one end of the reset torsion spring (33) is clamped below the fixing column (38), and the other end of the reset torsion spring (33) is fixedly connected with a stroke limiting block (36).

8. A three-position disconnecting switch for a locomotive according to claim 6, wherein: the detector is including establishing on main shaft (20) and being located detection pole (40) of the vertical mounting panel of second (5) lateral surface, all setting up in the vertical mounting panel of second (5) and being used for detecting first inlet wire position connection first travel switch (41) that switch on, be used for detecting second wiring position connection second travel switch (42) that switch on and be used for detecting second wiring position connection third travel switch (43) that switch on.

9. A three-position disconnecting switch for a locomotive according to claim 6, wherein: the tip that main shaft (20) was kept away from in operating handle (2) is provided with first locking plate (44), be provided with on the lateral surface of operating panel (3) with first locking plate (44) complex second locking plate (45), first locking hole has been seted up on first locking plate (44), seted up on second locking plate (45) with first locking hole complex second locking hole, first locking hole with second locking hole is just to the time, operating handle (2) drive the other end of isolation knife tackle spare and second wiring position are connected and are switched on, realize that the connection of second wiring position and play line position switches on.

10. A use method of a three-position isolating switch for a locomotive is characterized by comprising the following steps:

step one, classification of the working types of the isolating switches: the working types of the isolating switch comprise workshop power supply for supplying power to an outlet wire position, outlet wire position grounding and pantograph outlet wire position power supply;

when the workshop power supply is selected to supply power to the line position, executing the step two;

when the outlet position is selected to be grounded, executing a third step;

when the pantograph is selected to supply power for the line position, executing the step four;

step two, supplying power to a line position by a workshop power supply: the specific process of supplying power to the line position by the workshop power supply is as follows:

step A1, operating an unlocking handle (35) to rotate, wherein the unlocking handle (35) rotates to drive a rotating shaft (34) in the self-resetting fastener to rotate, the rotating shaft (34) rotates to drive a stroke limiting block (36) and a resetting torsion spring (33) to synchronously rotate, and the stroke limiting block (36) rotates to drive a limiting pin (37) to rotate; during the rotation process of the unlocking handle (35), the unlocking handle (35) rotates to the stroke limiting block (36) and cannot contact the stroke switch (28), the stroke switch (28) is disconnected, and the limiting pin (37) is separated from the second clamping groove (30) or the third clamping groove (31) on the limiting clamping plate (27);

step B1, operating the operating handle (2) to rotate, wherein the operating handle (2) rotates to drive the main shaft (20) in the transmission part to rotate, the main shaft (20) rotates to drive the limiting clamping plate (27), the hinged frame (23) and the detection rod (40) to synchronously rotate, and the hinged frame (23) rotates to sequentially drive the insulating pull rod (1) and the isolation knife assembly to rotate;

step C1, in the rotating process of the main shaft (20), one end of the isolating knife assembly is always connected and conducted with the wire outlet plate (14), when the detection rod (40) rotates until the detection rod (40) contacts the first travel switch (41), the first travel switch (41) is switched on, and the operation handle (2) stops rotating; the first travel switch (41) is connected, so that the first wire inlet plate (8) extends into the other end of the isolation knife assembly to be connected and conducted, the first wire inlet plate (8) and the wire outlet plate (14) are connected and conducted, and therefore a workshop power supply supplies power to a wire outlet position;

d1, loosening the unlocking handle (35), resetting the reset torsion spring (33) to reset the stroke limiting block (36), further clamping the limiting pin (37) on the stroke limiting block (36) in the first clamping groove (29) of the limiting clamping plate (27), and preventing the operating handle (2) from continuously rotating to ensure that the first wire inlet plate (8) and the wire outlet plate (14) are reliably connected and communicated;

step three, grounding the wire outlet position: the specific process of the outlet position grounding is as follows:

step A2, operating an unlocking handle (35) to rotate, wherein the unlocking handle (35) rotates to drive a rotating shaft (34) in the self-resetting fastener to rotate, the rotating shaft (34) rotates to drive a stroke limiting block (36) and a resetting torsion spring (33) to synchronously rotate, and the stroke limiting block (36) rotates to drive a limiting pin (37) to rotate; during the rotation process of the unlocking handle (35), the unlocking handle (35) rotates to the stroke limiting block (36) and cannot contact the stroke switch (28), the stroke switch (28) is disconnected, and the limiting pin (37) is separated from the first clamping groove (29) or the third clamping groove (31) on the limiting clamping plate (27);

step B2, operating the operating handle (2) to rotate, wherein the operating handle (2) rotates to drive the main shaft (20) in the transmission part to rotate, the main shaft (20) rotates to drive the limiting clamping plate (27), the hinged frame (23) and the detection rod (40) to synchronously rotate, and the hinged frame (23) rotates to sequentially drive the insulating pull rod (1) and the isolation knife assembly to rotate;

step C2, in the rotating process of the main shaft (20), one end of the isolating knife assembly is always connected and conducted with the wire outlet plate (14), when the detection rod (40) rotates until the detection rod (40) contacts the second travel switch (42), the second travel switch (42) is switched on, and the operation handle (2) stops rotating; the second travel switch (42) is connected, so that the second wire inlet plate (10) extends into the other end of the isolation knife assembly to be connected and conducted, the second wire inlet plate (10) and the wire outlet plate (14) are connected and conducted, and the wire position grounding is realized;

d2, loosening the unlocking handle (35), resetting the reset torsion spring (33) to reset the stroke limiting block (36), further clamping the limiting pin (37) on the stroke limiting block (36) in the second clamping groove (30) of the limiting clamping plate (27), and preventing the operating handle (2) from continuously rotating to ensure that the second wire inlet plate (10) and the wire outlet plate (14) are reliably connected and communicated;

step four, supplying power to the pantograph at the wire outlet position: the specific process of supplying power to the pantograph by giving the wire position is as follows:

step A3, operating an unlocking handle (35) to rotate, wherein the unlocking handle (35) rotates to drive a rotating shaft (34) in the self-resetting fastener to rotate, the rotating shaft (34) rotates to drive a stroke limiting block (36) and a resetting torsion spring (33) to synchronously rotate, and the stroke limiting block (36) rotates to drive a limiting pin (37) to rotate; during the rotation process of the unlocking handle (35), the unlocking handle (35) rotates to the stroke limiting block (36) and cannot contact the stroke switch (28), the stroke switch (28) is disconnected, and the limiting pin (37) is separated from the first clamping groove (29) or the second clamping groove (30) on the limiting clamping plate (27);

step B3, operating the operating handle (2) to rotate, wherein the operating handle (2) rotates to drive the main shaft (20) in the transmission part to rotate, the main shaft (20) rotates to drive the limiting clamping plate (27), the hinged frame (23) and the detection rod (40) to synchronously rotate, and the hinged frame (23) rotates to sequentially drive the insulating pull rod (1) and the isolation knife assembly to rotate;

step C3, in the rotating process of the main shaft (20), one end of the isolating knife assembly is always connected and conducted with the wire outlet plate (14), when the detection rod (40) rotates until the detection rod (40) contacts the third stroke switch (43), the third stroke switch (43) is switched on, and the operation handle (2) stops rotating; the third travel switch (43) is switched on, so that the third wire inlet plate (12) extends into the other end of the isolation knife assembly to be connected and conducted, the connection and conduction of the third wire inlet plate (12) and the wire outlet plate (14) are realized, and the power supply of the pantograph to the wire outlet position is realized;

and D3, loosening the unlocking handle (35), resetting the reset torsion spring (33) to reset the stroke limiting block (36), further clamping the limiting pin (37) on the stroke limiting block (36) in the third clamping groove (31) of the limiting clamping plate (27), and preventing the operating handle (2) from continuously rotating to ensure that the third wire inlet plate (12) and the wire outlet plate (14) are reliably connected and communicated.

Technical Field

The invention belongs to the technical field of isolating switches, and particularly relates to a three-position isolating switch for a locomotive and a using method thereof.

Background

With the rapid development of national economy, urban rail transit becomes an important public transport means in middle and large cities, the development of rail transit brings a great deal of demands on electric locomotives, and the requirements of people on equipment and personal safety are higher and higher.

The power receiving mode of domestic rail vehicles generally comprises two combined modes of pantograph power supply and workshop power supply, the high-voltage loops of the two modes are not allowed to be simultaneously switched on for power supply, and the high-voltage loops need to be mutually locked, so that the control requirement on the circuits is stricter, the higher requirement on the power supply safety is provided, and the strict interlocking logic control on the corresponding high-voltage electric appliances and the low-voltage control loop is required. The conventional logic control relation is that the position switching is realized by utilizing the mutual locking of the auxiliary contacts of the contactors of the control loops of the high-voltage electrical appliances, the possibility of misoperation cannot be completely eliminated by means of the interlocking among the electric appliances, and the safety is poor.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a three-position isolating switch for a locomotive, which is simple in structure and reasonable in design, wherein a first incoming line position is connected with a workshop power supply, a second incoming line position is connected with a ground wire, a third incoming line position is connected with a pantograph, and an isolating knife assembly is arranged to connect and conduct the first incoming line position with an outgoing line position, the second incoming line position with the outgoing line position or the third incoming line position with the outgoing line position, so that the first incoming line position, the second incoming line position and the third incoming line position are effectively prevented from being simultaneously connected and conducted with the outgoing line position, the workshop power supply and the pantograph are prevented from simultaneously supplying power to a train, mechanical locking of the isolating switch is effectively realized, and power supply safety is guaranteed.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a three station isolator for locomotive which characterized in that: comprises that

The first wire inlet position is used for gating a line which is used for supplying power to the wire outlet position by a workshop power supply;

the second wire inlet position is used for gating the grounded line of the wire outlet position;

the third wire inlet position is used for gating a wire for supplying power to the wire outlet position by the pantograph;

the operating mechanism is used for driving the isolating cutter assembly to rotate so as to enable the wire outlet position to be connected and conducted with the first wire inlet position, the second wire inlet position or the third wire inlet position;

a detector for detecting a conduction signal of the first, second or third incoming line bit;

the support body is used for installing a first wire inlet position, a second wire inlet position, a third wire inlet position, a wire outlet position, an operating mechanism and a detector.

Foretell three station isolator for locomotive, its characterized in that: the support body is including being parallel arrangement's operating panel, first vertical mounting panel and the vertical mounting panel of second, it is provided with the clearance between operating panel and the first vertical mounting panel, connect as an organic wholely through a plurality of horizontal connecting post between operating panel and the first vertical mounting panel, first inlet wire position the second inlet wire position the third inlet wire position with it all is located between first vertical mounting panel and the vertical mounting panel of second to go out the wire position.

Foretell three station isolator for locomotive, its characterized in that: the first wire inlet position comprises two first double-layer insulating rods which are arranged between a first vertical mounting plate and a second vertical mounting plate, and a first wire inlet plate sleeved on the two first double-layer insulating rods, and a first wiring terminal is arranged on the first wire inlet plate;

the second wire inlet position comprises two second double-layer insulating rods which are arranged between the first vertical mounting plate and the second vertical mounting plate, and a plurality of second wire inlet plates which are sleeved on the two second double-layer insulating rods, wherein second wire connecting terminals are arranged on the second wire inlet plates;

the third wire inlet position comprises two third double-layer insulating rods which are arranged between the first vertical mounting plate and the second vertical mounting plate, and a third wire inlet plate which is sleeved on the two third double-layer insulating rods, and a third wire connecting terminal is arranged on the third wire inlet plate;

the outlet wire position includes that two all set up the outlet plate installation pole between first vertical mounting panel and the vertical mounting panel of second to and a plurality of all overlap and establish the outlet plate on two outlet plate installation poles, be provided with terminal outgoing lines on the outlet plate.

Foretell three station isolator for locomotive, its characterized in that: the number of the first wire inlet plates on the first double-layer insulating rod is two, the first wiring terminal of one of the two first wire inlet plates is a positive wiring terminal, and the first wiring terminal of the other first wire inlet plate is a negative wiring terminal;

the number of third line incoming plates on the third double-layer insulating rod is two, two the third binding post of a third line incoming plate in the third line incoming plate is positive binding post, and the third binding post of another third line incoming plate is negative binding post.

Foretell three station isolator for locomotive, its characterized in that: the isolation knife assembly comprises a plurality of isolation knives, the number of the second wire inlet plates and the number of the wire outlet plates are equal and correspond to one another, each isolation knife comprises two isolation knife plates which are arranged in parallel, one ends of the two isolation knife plates are hinged with the wire outlet plates through first connecting pieces, and the other ends of the two isolation knife plates are connected into a whole through second connecting pieces;

two the tip medial surface of keeping apart the cutting board all is provided with first line inlet board, second line inlet board, third line inlet board and the electrically conductive contact of line outgoing plate contact, two the other end of keeping apart the cutting board all be provided with the connecting hole and with the open slot of connecting hole intercommunication, the second connecting piece is worn to establish between the connecting hole of two isolation cutting boards.

Foretell three station isolator for locomotive, its characterized in that: the operating mechanism comprises an operating handle, a transmission component connected with the operating handle and a self-locking device used for locking the rotation position of the transmission component;

the transmission component comprises a main shaft arranged between an operation panel and a second vertical mounting plate, and a first bearing, a first positioning connecting piece, a hinged frame, a second positioning connecting piece, a thrust piece and a second bearing which are sequentially sleeved on the main shaft, wherein the two ends of the main shaft respectively extend out of the operation panel and the second vertical mounting plate, an operation handle is fixedly connected with the end part of the main shaft extending out of the operation panel, the first bearing is fixedly connected with the inner side surface of the operation panel, the first positioning connecting piece, the hinged frame, the second positioning connecting piece and the thrust piece are positioned between the first vertical mounting plate and the second vertical mounting plate, the outer side surface of the thrust piece is attached to the inner side surface of the second vertical mounting plate, and the second bearing is fixedly connected with the outer side surface of the second vertical mounting plate;

articulated frame is last to be provided with a plurality of articulated seats, and is a plurality of the quantity of articulated seat, a plurality of keep apart the quantity and a plurality of the quantity of insulating pull rod is equal and the one-to-one, the one end of insulating pull rod with articulated seat is articulated, the other end of insulating pull rod articulates keep apart between two isolation cutting boards of sword.

Foretell three station isolator for locomotive, its characterized in that: the self-locking device comprises a limiting clamping plate, self-resetting clamping pieces and a travel switch, wherein the limiting clamping plate is sleeved on the main shaft and synchronously rotates with the main shaft;

the limiting clamping plate is provided with three clamping grooves along the circumferential direction, and the three clamping grooves are a first clamping groove, a second clamping groove and a third clamping groove respectively;

the self-resetting fastener comprises a guide sleeve arranged on the inner side surface of the operation panel, a resetting torsion spring sleeved on the guide sleeve, a rotating shaft penetrating through the guide sleeve, an unlocking handle sleeved on the rotating shaft and positioned on the outer side of the operation panel and a stroke limiting block positioned on the inner side of the operation panel, wherein a limiting pin in clamping fit with the first clamping groove, the second clamping groove or the third clamping groove is arranged on the stroke limiting block, and the stroke switch is positioned below the stroke limiting block;

the inner side surface of the operation panel is further provided with a fixing column for fixing a reset torsion spring and a limiting column for limiting the rotating position of the rotating shaft, one end of the reset torsion spring is clamped below the fixing column, and the other end of the reset torsion spring is fixedly connected with the stroke limiting block.

Foretell three station isolator for locomotive, its characterized in that: the detector is including the cover establish on the main shaft and be located the detection pole of the vertical mounting panel lateral surface of second, all set up at the vertical mounting panel of second and be used for detecting first inlet wire position connection and switch on first travel switch, be used for detecting second wiring position connection and switch on second travel switch and be used for detecting second wiring position connection and switch on the third travel switch.

Foretell three station isolator for locomotive, its characterized in that: the utility model discloses a tool assembly, including operating handle, operation panel, operation handle, first locking plate, first locking hole, second locking plate, operating handle drives the other end of keeping apart knife tackle spare and second wiring position are connected and switch on, realize that the connection of second wiring position and play line position switches on, be provided with on operating panel's the lateral surface with first locking plate complex second locking plate, first locking hole has been seted up on the first locking plate, seted up on the second locking plate with first locking hole complex second locking hole, first locking hole with second locking hole is just to the time, operating handle drives the other end of keeping apart knife tackle spare and second wiring position are connected and switch on.

Meanwhile, the invention also discloses a use method of the three-station isolating switch for the locomotive, which has the advantages of simple method steps, reasonable design and good use effect, and is characterized by comprising the following steps:

step one, classification of the working types of the isolating switches: the working types of the isolating switch comprise workshop power supply for supplying power to an outlet wire position, outlet wire position grounding and pantograph outlet wire position power supply;

when the workshop power supply is selected to supply power to the line position, executing the step two;

when the outlet position is selected to be grounded, executing a third step;

when the pantograph is selected to supply power for the line position, executing the step four;

step two, supplying power to a line position by a workshop power supply: the specific process of supplying power to the line position by the workshop power supply is as follows:

step A1, operating an unlocking handle to rotate, wherein the unlocking handle rotates to drive a rotating shaft in the self-resetting fastener to rotate, the rotating shaft rotates to drive a stroke limiting block and a resetting torsion spring to synchronously rotate, and the stroke limiting block rotates to drive a limiting pin to rotate; during the rotation process of the unlocking handle, the unlocking handle rotates until the travel limiting block cannot contact the travel switch, and the travel switch is disconnected, which indicates that the limiting pin is separated from the second clamping groove or the third clamping groove on the limiting clamping plate;

step B1, operating the operating handle to rotate, wherein the operating handle rotates to drive the main shaft in the transmission part to rotate, the main shaft rotates to drive the limiting clamping plate, the hinged frame and the detection rod to synchronously rotate, and the hinged frame rotates to sequentially drive the insulating pull rod and the isolation knife assembly to rotate;

step C1, in the rotating process of the main shaft, one end of the isolating knife assembly is always connected and conducted with the wire outlet plate, when the detection rod rotates to the point that the detection rod contacts the first travel switch, the first travel switch is switched on, and the operation handle stops rotating; the first travel switch is connected, so that the first wire inlet plate extends into the other end of the isolation knife assembly to be connected and conducted, the first wire inlet plate and the wire outlet plate are connected and conducted, and therefore a workshop power supply supplies power to a wire outlet position;

d1, loosening the unlocking handle, resetting the reset torsion spring to reset the stroke limiting block, clamping the limiting pin on the stroke limiting block in the first clamping groove of the limiting clamping plate, and ensuring that the first wire inlet plate and the wire outlet plate are reliably connected in a conductive manner, wherein the operating handle cannot continuously rotate;

step three, grounding the wire outlet position: the specific process of the outlet position grounding is as follows:

step A2, operating an unlocking handle to rotate, wherein the unlocking handle rotates to drive a rotating shaft in the self-resetting fastener to rotate, the rotating shaft rotates to drive a stroke limiting block and a resetting torsion spring to synchronously rotate, and the stroke limiting block rotates to drive a limiting pin to rotate; during the rotation process of the unlocking handle, the unlocking handle rotates until the travel limiting block cannot contact the travel switch, and the travel switch is disconnected, which indicates that the limiting pin is separated from the first clamping groove or the third clamping groove on the limiting clamping plate;

step B2, operating the operating handle to rotate, wherein the operating handle rotates to drive the main shaft in the transmission part to rotate, the main shaft rotates to drive the limiting clamping plate, the hinged frame and the detection rod to synchronously rotate, and the hinged frame rotates to sequentially drive the insulating pull rod and the isolation knife assembly to rotate;

step C2, in the rotating process of the main shaft, one end of the isolating knife assembly is always connected and conducted with the wire outlet plate, when the detection rod rotates to the point that the detection rod contacts the second travel switch, the second travel switch is switched on, and the operation handle stops rotating; the second travel switch is connected, so that the second wire inlet plate extends into the other end of the isolation knife assembly to be connected and conducted, the second wire inlet plate and the wire outlet plate are connected and conducted, and wire position grounding is achieved;

d2, loosening the unlocking handle, resetting the reset torsion spring to reset the stroke limiting block, clamping the limiting pin on the stroke limiting block in the second clamping groove of the limiting clamping plate, and ensuring that the second wire inlet plate and the wire outlet plate are reliably connected and communicated, wherein the operating handle cannot continuously rotate;

step four, supplying power to the pantograph at the wire outlet position: the specific process of supplying power to the pantograph by giving the wire position is as follows:

step A3, operating an unlocking handle to rotate, wherein the unlocking handle rotates to drive a rotating shaft in the self-resetting fastener to rotate, the rotating shaft rotates to drive a stroke limiting block and a resetting torsion spring to synchronously rotate, and the stroke limiting block rotates to drive a limiting pin to rotate; during the rotation process of the unlocking handle, the unlocking handle rotates until the travel limiting block cannot contact the travel switch, and the travel switch is disconnected, which indicates that the limiting pin is separated from the first clamping groove or the second clamping groove on the limiting clamping plate;

step B3, operating the operating handle to rotate, wherein the operating handle rotates to drive the main shaft in the transmission part to rotate, the main shaft rotates to drive the limiting clamping plate, the hinged frame and the detection rod to synchronously rotate, and the hinged frame rotates to sequentially drive the insulating pull rod and the isolation knife assembly to rotate;

step C3, in the rotation process of the main shaft, one end of the isolation knife assembly is always connected and conducted with the wire outlet plate, when the detection rod rotates to the point that the detection rod contacts the third stroke switch, the third stroke switch is switched on, and the operation handle stops rotating; the third travel switch is switched on, so that the third wire inlet plate extends into the other end of the isolation knife assembly to be connected and conducted, the third wire inlet plate and the wire outlet plate are connected and conducted, and the power supply of the pantograph to the wire outlet position is realized;

and D3, loosening the unlocking handle, resetting the reset torsion spring to reset the stroke limiting block, clamping the limiting pin on the stroke limiting block in the third clamping groove of the limiting clamping plate, and ensuring that the third wire inlet plate and the wire outlet plate are reliably connected and communicated because the operating handle cannot continuously rotate.

Compared with the prior art, the invention has the following advantages:

1. according to the invention, the first wire inlet position is connected with a workshop power supply, the second wire inlet position is connected with a ground wire, the third wire inlet position is connected with a pantograph, and the isolation knife assembly is arranged to gate the first wire inlet position, the second wire inlet position, the third wire inlet position or the third wire inlet position, so that the first wire inlet position, the second wire inlet position and the third wire inlet position are effectively prevented from being simultaneously connected and communicated with the wire outlet position, further, the workshop power supply and the pantograph are prevented from simultaneously supplying power to a train, the mechanical locking of the isolation switch is effectively realized, and the power supply safety is ensured.

2. The locomotive power supply system is provided with a first wire inlet position, a second wire inlet position, a third wire inlet position and a wire outlet position, wherein a load on the locomotive is connected with a wiring terminal on the wire outlet position, and when the first wire inlet position is connected and conducted with the wire outlet position, a workshop power supply supplies power to the load on the train; when the second wire inlet position is connected and conducted with the wire outlet position, the load on the train is grounded, and the load and the isolating switch are convenient to overhaul; when the third wire inlet position is connected and conducted with the wire outlet position, the pantograph supplies power to the load on the train, and therefore three working states of the isolating switch are achieved.

3. The invention is provided with an operating mechanism, the operating mechanism comprises an operating handle, a transmission part connected with the operating handle and a self-locking device used for locking the rotation position of the transmission part, the operating mechanism drives an isolation knife assembly to rotate, the self-locking device locks the rotation position of the transmission part, the situation that the isolation knife assembly drifts due to the error touch of workers or the vibration at the installation position of the isolation switch after the isolation switch rotates to the position is avoided, the isolation switch is further prevented from being in poor contact, the isolation knife assembly is ensured to be reliably connected with a first wire inlet position, a second wire inlet position, a third wire inlet position and a wire outlet position in the using process, the angle position is reliable and stable, the using effect is good, and the using reliability of the isolation switch is effectively improved.

4. According to the invention, the connection and conduction signals of the first wire inlet position, the second wire inlet position and the third wire inlet position and the wire outlet position are detected by the detector, so that the position signal of the isolation knife assembly is provided, a worker can know whether the isolation knife assembly reaches the corresponding wire inlet position conveniently, and the use is convenient.

5. The invention adopts an integrated design, has small volume and light weight, can meet the switching of two paths of power supplies on a train, does not occupy too large space on a locomotive and is convenient for popularization and use.

In conclusion, the isolation switch is reasonable in design, convenient and safe to operate and small in size, the isolation switch is connected with a workshop power supply through the arrangement of the first wire inlet position, the workshop power supply is connected with the grounding wire through the arrangement of the second wire inlet position, the pantograph is connected through the arrangement of the third wire inlet position, and the isolation knife assembly is arranged to connect and conduct the first wire inlet position with the wire outlet position, the second wire inlet position with the wire outlet position or the third wire inlet position with the wire outlet position, so that the first wire inlet position, the second wire inlet position and the third wire inlet position are effectively prevented from being simultaneously connected and conducted with the wire outlet position, the workshop power supply and the pantograph are prevented from simultaneously supplying power to a train, the mechanical locking of the isolation switch is effectively realized, and the power supply safety is guaranteed; the rotation position of the transmission part is locked by the self-locking device, the isolation switch is prevented from shifting after rotating to the position due to the fact that the isolation knife assembly is touched by mistake of a worker or the isolation switch is caused by vibration of the installation position of the isolation switch, contact failure of the isolation switch is further caused, the isolation knife assembly is guaranteed to be reliably connected with the first wire inlet position, the second wire inlet position, the third wire inlet position and the wire outlet position in the using process, the angle position is reliable and stable, the using effect is good, and the use reliability of the isolation switch is effectively improved.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view taken along direction a of fig. 1.

Fig. 3 is a schematic structural diagram of the present invention with the first feed line position, the second feed line position, the third feed line position and the detector removed.

Fig. 4 is a partially enlarged view of fig. 3 at B.

Description of reference numerals:

1-an insulated pull rod; 2-operating a handle; 3-an operation panel;

4-a first vertical mounting plate; 5-a second vertical mounting plate; 6-horizontal connecting column;

7-a first double-layer insulating rod; 8, a first wire inlet plate; 9-a second double-layer insulating rod;

10-a second wire inlet plate; 11-third double layer insulation rod; 12-a third incoming line board;

13-outlet plate mounting rod; 14-outlet plate; 15-isolating the knife board;

16-a mounting substrate; 17-a spring body; 18-spring pressure plate;

19-a contact tip; 20-a main shaft; 21-a socket;

22-a first positioning connection; 23-a hinged frame; 24-a second positioning connection;

25-a thrust member; 26 — a second bearing; 27-a limit clamping plate;

28-a travel switch; 29-a first card slot; 30-a second card slot;

31-third card slot; 32-a guide sleeve; 33-a reset torsion spring;

34-a rotating shaft; 35-an unlocking handle; 36-stroke stop block;

37-a spacing pin; 38-fixed column; 39-limiting columns;

40-a detection rod; 41-a first travel switch; 42-a second travel switch;

43 — third stroke switch; 44 — a first locking plate; 45-a second locking plate;

46 — first connecting wire; 47 — a second connecting wire; 48, a connecting shaft;

49 — first platen; 50-second press plate.

Detailed Description

As shown in figure 1, the three-position isolating switch for the locomotive comprises

The first wire inlet position is used for gating a line which is used for supplying power to the wire outlet position by a workshop power supply;

the second wire inlet position is used for gating the grounded line of the wire outlet position;

the third wire inlet position is used for gating a wire for supplying power to the wire outlet position by the pantograph;

the operating mechanism is used for driving the isolating cutter assembly to rotate so as to enable the wire outlet position to be connected and conducted with the first wire inlet position, the second wire inlet position or the third wire inlet position;

a detector for detecting a conduction signal of the first, second or third incoming line bit;

the support body is used for installing a first wire inlet position, a second wire inlet position, a third wire inlet position, a wire outlet position, an operating mechanism and a detector.

In this embodiment, it should be noted that one end of the isolation knife assembly is always connected to the wire outlet position, and the other end of the isolation knife assembly is connected and conducted to the first wire inlet position or the third wire inlet position according to actual needs, so that the first wire inlet position and the third wire inlet position are effectively prevented from being simultaneously connected and conducted to the wire outlet position, and further, a workshop power supply and a pantograph are prevented from simultaneously supplying power to a train, and therefore, the isolation switch is effectively mechanically locked, and power supply safety is guaranteed; the isolating knife assembly is driven to rotate by the operating mechanism, the self-locking device locks the rotating position of the transmission part, the isolating knife assembly is prevented from drifting due to error touch of workers or vibration at the installation position of the isolating switch after the isolating switch rotates to the position, and the isolating switch is prevented from being in poor contact, so that the isolating knife assembly is ensured to be reliably connected with the first wire inlet position, the second wire inlet position, the third wire inlet position and the wire outlet position in the use process, and the use reliability of the isolating switch is improved; through setting up being connected of detector detection first inlet wire position, second wiring position and third inlet wire position and play line position and switching on the signal, the staff of being convenient for learns whether reach corresponding inlet wire position, convenient to use of isolation knife tackle spare.

As shown in fig. 1, in this embodiment, the frame body includes an operation panel 3, a first vertical mounting plate 4 and a second vertical mounting plate 5 which are arranged in parallel, a gap is provided between the operation panel 3 and the first vertical mounting plate 4, the operation panel 3 and the first vertical mounting plate 4 are connected into a whole through a plurality of horizontal connecting columns 6, and the first wire inlet position, the second wire inlet position, the third wire inlet position and the wire outlet position are all located between the first vertical mounting plate 4 and the second vertical mounting plate 5.

In this embodiment, during the in-service use, keep apart the knife tackle spare first inlet wire position the second inlet wire position the third inlet wire position with the position of being qualified for the next round of competitions is electrified part, and electrified part is installed between first vertical mounting panel 4 and second vertical mounting panel 5, and operating handle 2 and unblock handle 35 are all installed on operating panel 3's lateral surface, are provided with the clearance between operating panel 3 and the first vertical mounting panel 4, make the operating handle 2 and the unblock handle 35 on the operating panel 3 separate with the electrified part between first vertical mounting panel 4 and the second vertical mounting panel 5, have effectively improved this isolator's safety in utilization.

In this embodiment, a mounting substrate 16 is disposed at the bottom of the outer side surface of the second vertical mounting plate 5, the mounting substrate 16 is preferably an angle steel, and the installation of the isolating switch at a position where the isolating switch needs to be installed is facilitated by the arrangement of the mounting substrate 16.

As shown in fig. 1, in this embodiment, the first wire inlet position includes two first double-layer insulating rods 7 both disposed between the first vertical mounting plate 4 and the second vertical mounting plate 5, and a first wire inlet plate 8 sleeved on the two first double-layer insulating rods 7, and a first wire connecting terminal is disposed on the first wire inlet plate 8;

the second wire inlet position comprises two second double-layer insulating rods 9 which are arranged between the first vertical mounting plate 4 and the second vertical mounting plate 5, and a plurality of second wire inlet plates 10 which are sleeved on the two second double-layer insulating rods 9, wherein second wire connecting terminals are arranged on the second wire inlet plates 10;

the third wire inlet position comprises two third double-layer insulating rods 11 which are arranged between the first vertical mounting plate 4 and the second vertical mounting plate 5, and a third wire inlet plate 12 which is sleeved on the two third double-layer insulating rods 11, and a third wire connecting terminal is arranged on the third wire inlet plate 12;

the outlet wire position includes two outlet plate installation rods 13 that all set up between first vertical mounting panel 4 and the vertical mounting panel 5 of second to and a plurality of outlet plate 14 of establishing on two outlet plate installation rods 13 all, be provided with outlet terminal on the outlet plate 14.

In this embodiment, in actual use, the first double-layer insulating rod 7, the third double-layer insulating rod 11 and the outlet plate mounting rod 13 are double-layer insulating rods, each double-layer insulating rod includes a first mounting rod arranged between the first vertical mounting plate 4 and the second vertical mounting plate 5, a first insulating sleeve sleeved on the first mounting rod, and n first positioning insulating sleeves all sleeved on the first insulating sleeve, where n is a positive integer and is greater than or equal to 3; the first wire inlet plate 8, the third wire inlet plate 12 and the wire outlet plate 14 are sleeved on the first insulating sleeves and are positioned between two adjacent first positioning insulating sleeves; through setting up first insulation support with first incoming line board 8, third incoming line board 12 and outlet plate 14 with first installation pole is separated, through setting up first location insulation support is injectd first incoming line board 8, third incoming line board 12 and outlet plate 14's the mounted position on the first insulation support, again to first incoming line board 8, third incoming line board 12 and outlet plate 14 simultaneously with first installation pole is separated, improves the insulating effect of double-deck insulation support, avoids the current leakage on first incoming line board 8, third incoming line board 12 and the outlet plate 14, guarantees this isolator's safety in utilization.

In this embodiment, the two first double-layer insulating rods 7 in the first wire inlet position are arranged in a highly staggered manner, and the first wire inlet plate 8 is sleeved on the first insulating sleeves of the two first double-layer insulating rods 7; the two third double-layer insulating rods 11 in the third wire inlet position are arranged in a highly staggered mode, and the third wire inlet plate 12 is sleeved on the first insulating sleeves of the two third double-layer insulating rods 11; the two outlet plate mounting rods 13 in the outlet position are arranged in a staggered manner, and the outlet plate 14 is sleeved on the first insulating sleeves of the two outlet plate mounting rods 13.

As shown in fig. 1, in this embodiment, the number of the first wire incoming plates 8 on the first double-layer insulating rod 7 is two, the first wire incoming plate 8 of one of the two first wire incoming plates 8 is a positive wire incoming terminal, and the first wire incoming plate 8 of the other first wire incoming plate 8 is a negative wire incoming terminal;

the quantity of third line incoming plate 12 is two on the third double-deck insulator spindle 11, two in the third line incoming plate 12 the third binding post of a third line incoming plate 12 is positive binding post, and the third binding post of another third line incoming plate 12 is negative binding post.

In this embodiment, in actual use, the outer side surface of the operation panel 3 is provided with a socket 21 for connecting a workshop power supply, the positive terminal of the first line feeding board 8 is connected with the socket 21 through a first connecting wire 46, when the workshop power supply supplies power to the isolating switch, the power transmission jack of the workshop power supply is directly connected with the socket 21, so that the workshop power supply supplies power to the isolating switch, and the negative terminal of the first line feeding board 8 is connected with the negative terminal of the third line feeding board 12 through a second connecting wire 47; the positive terminal of the third wire feeding plate 12 is connected to the pantograph.

In this embodiment, in actual use, the second double-layer insulating rod 9 includes a second mounting rod disposed between the first vertical mounting plate 4 and the second vertical mounting plate 5, a second insulating sleeve sleeved on the second mounting rod, and a plurality of second positioning insulating sleeves and conductive sleeves all sleeved on the second insulating sleeve; the two second double-layer insulating rods 9 in the second wiring position are arranged in a staggered mode, and the second wiring board 10 is sleeved on the second insulating sleeves of the two second double-layer insulating rods 9.

In this embodiment, it should be noted that the number of the outlet plates 14 on the outlet plate mounting rod 13 is determined by the number of the loads connected to the isolator, one outlet plate 14 of the plurality of outlet plates 14 is an anode outlet plate, one outlet plate 14 is a cathode outlet plate, the remaining outlet plates 14 are all grounding outlet plates connected to the grounding end of the load, and the number of the plurality of grounding outlet plates is equal to and corresponds to the number of the loads connected to the isolator; the number of the second wire inlet plates 10 and the number of the wire outlet plates 14 are equal, one second wire inlet plate 10 in the second wire inlet plates 10 is a positive second wire inlet plate, the rest second wire inlet plates 10 are grounded second wire inlet plates, two adjacent grounded second wire inlet plates in the grounded second wire inlet plates are communicated through the conductive sleeve, any one of the grounded second wire inlet plates is provided with a negative wire inlet plate, the grounded second wire inlet plates adjacent to the positive second wire inlet plate in the grounded second wire inlet plates are separated from the positive second wire inlet plate through second positioning insulating sleeves, the positive second wire inlet plate and the second vertical mounting plate 5 are separated, and second positioning insulating sleeves are arranged between the grounded second wire inlet plates close to the first vertical mounting plate 4 and the first vertical mounting plate 4 in the grounded second wire inlet plates, the short circuit of the grounding position of the isolating switch is avoided.

In this embodiment, in actual use, the number of the second incoming line board 10 and the number of the outgoing line board 14 are five.

As shown in fig. 3, in this embodiment, the isolation knife assembly includes a plurality of isolation knives, the number of the isolation knives is equal to that of the second wire incoming board 10, and the number of the wire outgoing boards 14 is equal and corresponds to one another, each isolation knife includes two isolation knife boards 15 arranged in parallel, one end of each isolation knife board 15 is hinged to the wire outgoing board 14 through a first connecting piece, and the other ends of the two isolation knife boards 15 are connected into a whole through a second connecting piece;

two the tip medial surface of isolation cutting board 15 all is provided with first line incoming plate 8, second line incoming plate 10, third line incoming plate 12 and the electrically conductive contact 19 of the 14 contact of outlet plate, two the other end of isolation cutting board 15 all be provided with the connecting hole and with the open slot of connecting hole intercommunication, the second connecting piece is worn to establish between the connecting hole of two isolation cutting boards 15.

In this embodiment, in actual use, the number of the isolation knives is five.

As shown in fig. 3 and 4, in this embodiment, it should be noted that the first connecting member and the second connecting member have the same structure, each of the first connecting member and the second connecting member includes a connecting shaft 48, a first pressing plate 49, a second pressing plate 50, and a spring, each of the first connecting member and the second connecting member is sleeved on the connecting shaft 48, the connecting shaft 48 is inserted between the connecting holes of the two isolating knife boards 15, two ends of the connecting shaft 48 respectively extend out of the two isolating knife boards 15, the first pressing plate 49 is located on the outer side of one isolating knife board 15 of the two isolating knife boards 15, and the second pressing plate 50 is located on the outer side of the other isolating knife board 15; the spring comprises a spring body 17 and two spring pressing plates 18 symmetrically arranged at two ends of the spring body 17, the spring body 17 and the two spring pressing plates 18 are sleeved on the connecting shaft 48, one spring pressing plate 18 of the two spring pressing plates 18 is in contact with the second pressing plate 50, and the other spring pressing plate 18 is located at the end part, extending out of the second pressing plate 50, of the connecting shaft 48.

In this embodiment, the wire outgoing plate 14 is located between the two isolating knife plates 15, and the wire outgoing plate 14 is sleeved on the connecting shaft 48 of the first connecting member.

In this embodiment, the open slot is laid along the length direction of isolation cutting board 15, through setting up the open slot reduces isolation cutting board 15 hardness, increases isolation cutting board 15's flexibility, and it is more firm to make the other end of isolation cutting board 15 and first line inlet board 8, second line inlet board 10 and third line inlet board 12 contact time contact, cleans first line inlet board 8, second line inlet board 10 and third line inlet board 12 simultaneously.

As shown in fig. 1 and 2, in the present embodiment, the operating mechanism includes an operating handle 2 and a transmission member connected to the operating handle 2, and a self-locker for locking a rotational position of the transmission member;

the transmission component comprises a main shaft 20 arranged between the operation panel 3 and the second vertical mounting plate 5, a first bearing, a first positioning connecting piece 22, a hinged frame 23, a second positioning connecting piece 24, a thrust piece 25 and a second bearing 26 which are sequentially sleeved on the main shaft 20, the two ends of the main shaft 20 respectively extend out of the operation panel 3 and the second vertical mounting plate 5, the operation handle 2 is fixedly connected with the end part of the main shaft 20 extending out of the operation panel 3, the first bearing is fixedly connected with the inner side surface of the operation panel 3, the first positioning connecting piece 22, the hinge frame 23, the second positioning connecting piece 24 and the thrust piece 25 are positioned between the first vertical mounting plate 4 and the second vertical mounting plate 5, the outer side surface of the thrust piece 25 is attached to the inner side surface of the second vertical mounting plate 5, and the second bearing 26 is fixedly connected with the outer side surface of the second vertical mounting plate 5;

articulated frame 23 is last to be provided with a plurality of articulated seats, and is a plurality of the quantity of articulated seat, a plurality of keep apart the quantity and a plurality of the quantity of insulating pull rod 1 is equal and the one-to-one, the one end of insulating pull rod 1 with articulated seat is articulated, the other end of insulating pull rod 1 articulates keep apart between two isolation cutting boards 15 of sword.

In this embodiment, in actual use, the first positioning connector 22 and the second positioning connector 24 have the same structure, the first positioning connector 22 is detachably connected to one end of the hinge frame 23, the second positioning connector 24 is detachably connected to the other end of the hinge frame 23, both the first positioning connector 22 and the second positioning connector 24 are detachably mounted on the spindle 20, and the hinge frame 23 is detachably mounted on the spindle 20 by the first positioning connector 22 and the second positioning connector 24, so that the mounting and dismounting are facilitated; the thrust piece 25 and the second bearing 26 are respectively located on two sides of the second vertical mounting plate 5, and the spindle 20 is fixed by arranging the thrust piece 25, so that the spindle 20 is prevented from moving along the circumferential direction of the spindle.

In this embodiment, every articulated seat all includes two articulated ears, and the one end of insulating pull rod 1 is located between two articulated ears, and the one end of insulating pull rod 1 is through round pin axle and two articulated ears are articulated.

As shown in fig. 1 and fig. 2, in this embodiment, the self-locking device includes a limit card 27 sleeved on the main shaft 20 and rotating synchronously with the main shaft 20, a self-reset card disposed on the operation panel 3 and used for limiting the rotation of the limit card 27, and a travel switch 28 used for detecting a reset signal of the self-reset card;

the limiting clamping plate 27 is provided with three clamping grooves along the circumferential direction, and the three clamping grooves are a first clamping groove 29, a second clamping groove 30 and a third clamping groove 31 respectively;

the self-resetting fastener comprises a guide sleeve 32 arranged on the inner side surface of the operation panel 3, a reset torsion spring 33 sleeved on the guide sleeve 32, a rotating shaft 34 penetrating through the guide sleeve 32, an unlocking handle 35 sleeved on the rotating shaft 34 and positioned on the outer side of the operation panel 3, and a stroke limiting block 36 positioned on the inner side of the operation panel 3, wherein a limiting pin 37 in clamping fit with the first clamping groove 29, the second clamping groove 30 or the third clamping groove 31 is arranged on the stroke limiting block 36, and the stroke switch 28 is positioned below the stroke limiting block 36;

the inner side surface of the operation panel 3 is further provided with a fixing column 38 for fixing the reset torsion spring 33 and a limiting column 39 for limiting the rotation position of the rotating shaft 34, one end of the reset torsion spring 33 is clamped below the fixing column 38, and the other end of the reset torsion spring 33 is fixedly connected with the stroke limiting block 36.

In the embodiment, the self-resetting clamping piece is arranged to rotate in place on the main shaft 20, and when the other end of the isolating knife is in contact with the first wire feeding plate 8, the second wire feeding plate 10 or the third wire feeding plate 12, the limiting pin 37 of the self-resetting clamping piece is clamped in the first clamping groove 29, the second clamping groove 30 or the third clamping groove 31 of the limiting clamping plate 27, so that the other end of the isolating knife is prevented from drifting when the isolating switch is used.

In this embodiment, in actual use, the stroke limiting block 36 is provided with a mounting hole into which the other end of the return torsion spring 33 is inserted, and when an operator does not apply an acting force to the return torsion spring 33 through the unlocking handle 35, the return torsion spring 33 drives the limiting pin 37 on the stroke limiting block 36 to be clamped in the first clamping groove 29, the second clamping groove 30 or the third clamping groove 31; when operating personnel applys the effort to reset torsion spring 33 through unblock handle 35, reset torsion spring 33 rotates and drives the spacer pin 37 on the stroke stopper 36 and break away from first draw-in groove 29, second draw-in groove 30 or third draw-in groove 31, operating personnel drives the isolation sword through rotating operating handle 2 and rotates, after the isolation sword rotated to the position, operating personnel loosens unblock handle 35 reset torsion spring 33 automatic re-setting, reset torsion spring 33 drives the spacer pin 37 on the stroke stopper 36 once more and clamps in first draw-in groove 29, second draw-in groove 30 or third draw-in groove 31, it is right to realize transmission parts's locking, avoid in this isolator use because operating personnel mistake touches and bumps and lead to the isolation sword rotates, improves this isolator's safety in utilization.

In this embodiment, the travel switch 28 may be referenced to the LXW22-11B travel switch in actual use.

As shown in fig. 2, in this embodiment, the detector includes a detection rod 40 sleeved on the main shaft 20 and located on the outer side surface of the second vertical mounting plate 5, a first travel switch 41, a second travel switch 42 and a third travel switch 43, wherein the first travel switch 41, the second travel switch 42 and the third travel switch are all disposed on the second vertical mounting plate 5 and are used for detecting the connection and conduction of the first incoming line position, the second travel switch 42 and the third travel switch for detecting the connection and conduction of the second incoming line position.

In this embodiment, in actual use, the first stroke switch 41, the second stroke switch 42 and the third stroke switch 43 can all refer to the LXW22-11B stroke switch.

As shown in fig. 1, in this embodiment, a first locking plate 44 is disposed at an end of the operating handle 2 away from the main shaft 20, a second locking plate 45 matched with the first locking plate 44 is disposed on an outer side surface of the operating panel 3, a first locking hole is disposed on the first locking plate 44, a second locking hole matched with the first locking hole is disposed on the second locking plate 45, when the first locking hole and the second locking hole are aligned, the operating handle 2 drives the other end of the isolating knife assembly to be connected and conducted with a second connecting position, so as to connect and conduct a second connecting position and an outgoing position.

In this embodiment, when this isolator ground connection, through the locking bolt dead with first locking plate 44 and second locking plate 45 lock, avoid operating handle 2 to be rotated by other people's mistake when this isolator needs ground connection, improve this isolator's security.

A use method of a three-position isolating switch for a locomotive comprises the following steps:

step one, classification of the working types of the isolating switches: the working types of the isolating switch comprise workshop power supply for supplying power to an outlet wire position, outlet wire position grounding and pantograph outlet wire position power supply;

when the workshop power supply is selected to supply power to the line position, executing the step two;

when the outlet position is selected to be grounded, executing a third step;

when the pantograph is selected to supply power for the line position, executing the step four;

step two, supplying power to a line position by a workshop power supply: the specific process of supplying power to the line position by the workshop power supply is as follows:

step A1, operating the unlocking handle 35 to rotate, wherein the unlocking handle 35 rotates to drive the rotating shaft 34 in the self-resetting fastener to rotate, the rotating shaft 34 rotates to drive the stroke limiting block 36 and the resetting torsion spring 33 to synchronously rotate, and the stroke limiting block 36 rotates to drive the limiting pin 37 to rotate; during the rotation process of the unlocking handle 35, the unlocking handle 35 rotates until the stroke limit block 36 can not contact the travel switch 28, and the travel switch 28 is disconnected, which indicates that the limit pin 37 is separated from the second slot 30 or the third slot 31 on the limit catch plate 27;

step B1, operating the operating handle 2 to rotate, wherein the operating handle 2 rotates to drive the main shaft 20 in the transmission part to rotate, the main shaft 20 rotates to drive the limiting clamping plate 27, the hinge frame 23 and the detection rod 40 to synchronously rotate, and the hinge frame 23 rotates to sequentially drive the insulating pull rod 1 and the isolation knife assembly to rotate;

step C1, in the rotation process of the main shaft 20, one end of the isolating knife assembly is always connected and conducted with the outlet plate 14, when the detection rod 40 rotates until the detection rod 40 contacts the first travel switch 41, the first travel switch 41 is switched on, and the operation handle 2 is operated to stop rotating; the first travel switch 41 is turned on, which means that the first wire inlet plate 8 extends into the other end of the isolation knife assembly to be connected and conducted, so that the first wire inlet plate 8 and the wire outlet plate 14 are connected and conducted, and power is supplied to a wire outlet position by a workshop power supply;

step D1, the unlocking handle 35 is loosened, the reset torsion spring 33 resets to reset the stroke limiting block 36, so that the limiting pin 37 on the stroke limiting block 36 is clamped in the first clamping groove 29 of the limiting clamping plate 27, the operating handle 2 cannot rotate continuously, and the first wire incoming plate 8 and the wire outgoing plate 14 are ensured to be reliably connected in a conduction manner;

step three, grounding the wire outlet position: the specific process of the outlet position grounding is as follows:

step A2, operating the unlocking handle 35 to rotate, wherein the unlocking handle 35 rotates to drive the rotating shaft 34 in the self-resetting fastener to rotate, the rotating shaft 34 rotates to drive the stroke limiting block 36 and the resetting torsion spring 33 to synchronously rotate, and the stroke limiting block 36 rotates to drive the limiting pin 37 to rotate; during the rotation process of the unlocking handle 35, the unlocking handle 35 rotates until the stroke limit block 36 can not contact the travel switch 28, and the travel switch 28 is disconnected, which indicates that the limit pin 37 is separated from the first slot 29 or the third slot 31 on the limit catch plate 27;

step B2, operating the operating handle 2 to rotate, wherein the operating handle 2 rotates to drive the main shaft 20 in the transmission part to rotate, the main shaft 20 rotates to drive the limiting clamping plate 27, the hinge frame 23 and the detection rod 40 to synchronously rotate, and the hinge frame 23 rotates to sequentially drive the insulating pull rod 1 and the isolation knife assembly to rotate;

step C2, in the rotation process of the main shaft 20, one end of the isolating knife assembly is always connected and conducted with the outlet plate 14, when the detection rod 40 rotates until the detection rod 40 contacts the second travel switch 42, the second travel switch 42 is switched on, and the operation handle 2 is operated to stop rotating; the second travel switch 42 is turned on, which means that the second incoming line board 10 extends into the other end of the isolation knife assembly to be connected and conducted, so that the second incoming line board 10 and the outgoing line board 14 are connected and conducted, and thus line position grounding is realized;

step D2, the unlocking handle 35 is loosened, the reset torsion spring 33 resets to reset the stroke limiting block 36, so that the limiting pin 37 on the stroke limiting block 36 is clamped in the second clamping groove 30 of the limiting clamping plate 27, the operating handle 2 cannot rotate continuously, and the connection and the conduction of the second wire inlet plate 10 and the wire outlet plate 14 are reliable;

step four, supplying power to the pantograph at the wire outlet position: the specific process of supplying power to the pantograph by giving the wire position is as follows:

step A3, operating the unlocking handle 35 to rotate, wherein the unlocking handle 35 rotates to drive the rotating shaft 34 in the self-resetting fastener to rotate, the rotating shaft 34 rotates to drive the stroke limiting block 36 and the resetting torsion spring 33 to synchronously rotate, and the stroke limiting block 36 rotates to drive the limiting pin 37 to rotate; during the rotation process of the unlocking handle 35, the unlocking handle 35 rotates until the travel limit block 36 cannot contact the travel switch 28, and the travel switch 28 is disconnected, which indicates that the limit pin 37 is separated from the first slot 29 or the second slot 30 on the limit catch plate 27;

step B3, operating the operating handle 2 to rotate, wherein the operating handle 2 rotates to drive the main shaft 20 in the transmission part to rotate, the main shaft 20 rotates to drive the limiting clamping plate 27, the hinge frame 23 and the detection rod 40 to synchronously rotate, and the hinge frame 23 rotates to sequentially drive the insulating pull rod 1 and the isolation knife assembly to rotate;

step C3, in the rotation process of the main shaft 20, one end of the isolating knife assembly is always connected and conducted with the outlet plate 14, when the detection rod 40 rotates until the detection rod 40 contacts the third stroke switch 43, the third stroke switch 43 is switched on, and the operation handle 2 is operated to stop rotating; the third travel switch 43 is turned on, which means that the third wire incoming plate 12 extends into the other end of the isolation knife assembly to be connected and conducted, so that the connection and conduction of the third wire incoming plate 12 and the wire outgoing plate 14 are realized, and the power supply of the pantograph to the wire outgoing position is realized;

and D3, loosening the unlocking handle 35, resetting the reset torsion spring 33 to reset the stroke limiting block 36, so that the limiting pin 37 on the stroke limiting block 36 is clamped in the third clamping groove 31 of the limiting clamping plate 27, the operating handle 2 cannot rotate continuously, and reliable connection and conduction of the third wire incoming plate 12 and the wire outgoing plate 14 are ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.