阅读说明：本技术 一种具有保护功能的工程车辆用继电器 (Relay with protection function for engineering vehicle ) 是由 申尚澈 张雪家 韩松山 魏华 于 2020-12-09 设计创作，主要内容包括：本发明公开了一种具有保护功能的工程车辆用继电器,包括底板,所述底板的顶部固定安装有壳体,所述壳体内壁中部的一侧固定安装有主继电单元,所述壳体内壁中部的另一侧固定安装有保护继电单元,所述主继电单元包括继电器盒,所述继电器盒内壁的底部固定安装有基座,所述基座顶部的一端固定连接有弯折板,本发明提供的一种具有保护功能的工程车辆用继电器,其通过设置保护继电单元,使得当感应线圈或触发头温度过高时,彻底中断感应线圈的电性输入,同时使得两个导电头分离,阻隔中断对外部电路的电流输出,保护效果好,同时通过设置壳体、继电器盒和保护箱等结构,提高了继电器整体的抗冲击能力。(The invention discloses a relay with a protection function for an engineering vehicle, which comprises a bottom plate, wherein a shell is fixedly arranged at the top of the bottom plate, a main relay unit is fixedly arranged on one side of the middle part of the inner wall of the shell, a protection relay unit is fixedly arranged on the other side of the middle part of the inner wall of the shell, the main relay unit comprises a relay box, a base is fixedly arranged at the bottom of the inner wall of the relay box, and one end of the top of the base is fixedly connected with a bending plate. The integral shock resistance of the relay is improved.)

1. A relay with a protection function for an engineering vehicle comprises a bottom plate (1), a shell (2) is fixedly arranged at the top of the bottom plate (1), it is characterized in that one side of the middle part of the inner wall of the shell (2) is fixedly provided with a main relay unit, a protective relay unit is fixedly arranged on the other side of the middle part of the inner wall of the shell (2), the main relay unit comprises a relay box (3), a base (4) is fixedly arranged at the bottom of the inner wall of the relay box (3), one end of the top of the base (4) is fixedly connected with a bending plate (5), one end of the top of the bending plate (5) is inserted and connected with a winding iron core (6), and the bottom end of the winding iron core (6) is arranged to protrude out of the bottom surface of the bending plate (5), the top end of the winding iron core (6) is fixedly connected with a winding cover plate (7), the top of the winding cover plate (7) is fixedly connected with the bottom of the iron frame (8); a first electric connection seat (9) is fixed at the other end of the top of the bending plate (5), an extension part is fixedly arranged at one end of the winding cover plate (7), a second electric connection seat (10) is fixedly connected to the bottom of the extension part, a first electric connection column (11) is fixedly connected to the top of the first electric connection seat (9), a second electric connection column (12) is connected to one end of the second electric connection seat (10) in a clamping mode, an induction coil (13) is wound in the middle of the winding iron core (6), one end of the induction coil (13) is fixedly connected with one side of the first electric connection column (11), and one side of the second electric connection column (12) is electrically connected with the other end of the induction coil (13); the protective relay unit comprises two thermistors (14), one side of one thermistor (14) is fixedly connected with the middle of the other side of the iron frame (8), and the other thermistor (14) is fixedly arranged in the middle of one side of the inner wall of the relay box (3).

2. The relay with the protection function for the engineering vehicle is characterized in that the middle of one side of the iron frame (8) is connected with one side of the inner wall of the locking ring (15) in an inserting manner, the other side of the inner wall of the locking ring (15) is connected with a connecting piece (16) in an inserting manner, one end of the connecting piece (16) is fixedly connected with one end of a trigger elastic piece (17), the middle of the trigger elastic piece (17) is fixedly connected with a trigger plate (18), one side of the trigger plate (18) is arranged corresponding to the bottom end of the wound iron core (6), one side of the connecting piece (16) is fixedly connected with a plastic push piece (19), and one end of the plastic push piece (19) is fixedly connected with a trigger head; conducting strips (20) are respectively inserted and connected to two sides of the other end of the top of the base (4), conducting heads are respectively and fixedly connected to the tops of the two conducting strips (20), a connecting column (21) is respectively and fixedly connected to one side of each conducting head, and one side of one connecting column (21) is arranged corresponding to one side of the trigger head; one side of the trigger plate (18) is provided with a plurality of uniformly distributed electric connection convex grooves.

3. The relay with the protection function for the engineering vehicle is characterized in that a cavity is formed in the inner wall of the second electric connecting seat (10), a second electric connecting post (12) is connected to the inner wall of the cavity in a sliding mode, a conductive elastic sheet is fixedly connected to one end of the second electric connecting post (12), an electric connecting elastic sheet is fixedly connected to the bottom of the inner wall of the cavity, one side of the conductive elastic sheet abuts against and is in contact with one side of the electric connecting elastic sheet, and one side of the electric connecting elastic sheet is fixedly connected with the other end of the induction coil (13); the other end of the second electric connecting post (12) is fixedly connected with a limiting piece, the middle part of the second electric connecting post (12) is fixedly connected with an ejecting sleeve (22), the bottom of the pop-up sleeve (22) is fixedly connected with a separation spring (23), the tops of the two sides of the second electric connection seat (10) are provided with through grooves, the tops of both sides of the ejecting sleeve (22) are fixedly connected with pushing springs, one ends of the two pushing springs are fixedly connected with pushing blocks (24), one sides of the two pushing blocks (24) are respectively and alternately connected with one sides of the inner walls of the two through grooves, the top of the second electric connecting seat (10) is fixedly connected with an ejecting ring (25), the two sides of the inner wall of the pop-up ring (25) are fixedly provided with pop-up motors, the output ends of the two pop-up motors are fixedly connected with cams (26), and one sides of the two cams (26) are respectively and alternately connected with the other sides of the inner walls of the two through grooves; one side fixedly connected with separation cylinder (27) at relay box (3) inner wall top, the output fixedly connected with separation piece (28) of separation cylinder (27), the bottom of separation piece (28) and the gap portion between two conducting strips (20) correspond arranges, just the both sides of separation piece (28) bottom all cut into the inclined plane.

4. The relay with the protection function for the engineering vehicle is characterized by further comprising a protection box (29), wherein a storage battery (30) is fixedly mounted on one side of the top of the inner wall of the protection box (29), a protection seat is fixedly mounted at the bottom of the inner wall of the protection box (29), a protection iron core (31) is fixedly mounted on one side of the top of the protection seat, a protection coil (32) is wound in the middle of the protection iron core (31), and the two thermistors (14) are electrically connected with the storage battery (30) and the protection coil (32); one side of one end of the protection seat is hinged with a protection touch plate (33) through a spring hinge, the other side of one end of the protection seat is fixedly connected with a separation cushion block, and one side of the protection touch plate (33) is fixedly connected with a push plate (34); the utility model discloses a battery protection box, including guard box (29), inboard wall, separation cylinder (27), two pop-up motors, the opposite side fixedly connected with movable gasket (35) at guard box (29) inner wall top, one side fixedly connected with fixed gasket (36) of guard box (29) inner wall, separation cylinder (27) and two pop-up motors all with movable gasket (35) and fixed gasket (36) electric connection, movable gasket (35) and fixed gasket (36) all with battery (30) electric connection.

5. The relay with the protection function for the engineering vehicle is characterized in that a separation plate (37) is fixedly connected to the central position of the middle part of the inner wall of the shell (2), exhaust fans are fixedly mounted at two ends of the separation plate (37), a plurality of guide plates (38) which are arranged in a staggered mode are fixedly connected to four side walls of the inner wall of the shell (2), and a plurality of ventilation openings (39) are formed in the middle part of the separation plate (37) and the outer wall of the shell (2).

6. The relay with the protection function for the engineering vehicle is characterized in that a limiting ball (40) is fixedly connected to the end of the iron frame (8), a limiting stop block is fixedly connected to the top of the other side of the iron frame (8), and the other end of the trigger elastic sheet (17) is fixedly connected to one side of the bottom of the bending plate (5) through a return spring (41).

7. The relay with the protection function for the engineering vehicle is characterized in that edge portions of two sides of the bottom plate (1) are arranged in a bent mode, a plurality of fixing holes are formed in the middle portions of the two edge portions, supporting seats (42) are fixedly connected to two sides of the top of the bottom plate (1), a plurality of fixing grooves are formed in the top of the two supporting seats (42), and the tops of the fixing grooves are arranged corresponding to the bottoms of the fixing holes respectively.

8. The relay with protection function for construction vehicles according to claim 1, wherein the operation method of the relay comprises the steps of:

the method comprises the following steps: the supporting seats (42) are fixedly arranged at the using positions, then the two sides of the bottom plate (1) are respectively clamped with the tops of the two supporting seats (42), the fixing holes and the fixing grooves are fixedly connected through a plurality of bolts or other connecting pieces, and then the relay is connected into a using circuit according to the connecting mode of a common relay;

step two: when the current in the circuit exceeds the threshold value of the relay, the induction coil (13) is electrified, magnetic force generated by electromagnetic induction attracts the trigger plate (18), so that the trigger plate (18) is in contact with the end head of the iron core, the trigger elastic sheet (17) is bent to drive the connecting sheet (16) to displace, the plastic push sheet (19) pushes the trigger head, the trigger head pushes the connecting column (21), so that the two conductive heads are in contact, the two conductive sheets (20) are communicated and are conductive, and the output circuit of the relay is switched on;

step three: when the relay works abnormally, and the temperature of the induction coil (13) or the trigger head is overhigh, the resistance value of the thermistor (14) is reduced, when the current of the protection coil (32) reaches a threshold value, the protection contact plate (33) is attracted and is contacted with the protection iron core (31), the push plate (34) pushes the movable gasket (35) to be contacted and conducted with the fixed gasket (36), the pop-up motor is started to drive the cam (26) to rotate, the push block (24) is separated from the through groove, the pop-up sleeve (22) is separated from the second electric connection base (10) under the action of the separation spring (23), the second electric connection column (12) is disconnected from the induction coil (13), meanwhile, the separation cylinder (27) pushes the blocking piece (28) to move downwards, the two conducting pieces (20) are separated, and the electric connection between the conducting pieces (20) is disconnected.

Technical Field

The invention relates to a relay, in particular to a relay with a protection function for an engineering vehicle.

Background

A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount meets a predetermined requirement. It has an interactive relationship between the input loop and the output loop. It is commonly used in automated control circuits, which are actually a "recloser" that uses low current to control high current operation. The circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like. The existing relay lacks sufficient protective measures, a large amount of heat is easy to accumulate during long-time work, heat can not be dissipated in time, a coil is damaged by melting, a circuit is short-circuited, the circuit cannot be disconnected sufficiently and timely when the circuit is abnormal, circuit connection is blocked, and the protective capability is poor.

Disclosure of Invention

The present invention is directed to a relay for a construction vehicle having a protection function to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a relay with a protection function for an engineering vehicle comprises a base plate, wherein a shell is fixedly mounted at the top of the base plate, a main relay unit is fixedly mounted on one side of the middle part of the inner wall of the shell, a protection relay unit is fixedly mounted on the other side of the middle part of the inner wall of the shell, the main relay unit comprises a relay box, a base is fixedly mounted at the bottom of the inner wall of the relay box, one end of the top of the base is fixedly connected with a bending plate, one end of the top of the bending plate is connected with a winding iron core in an inserting mode, the bottom end of the winding iron core protrudes out of the bottom surface of the bending plate, a winding cover plate is fixedly connected to the top end of the winding iron; a first electric connecting seat is fixed at the other end of the top of the bending plate, an extending part is fixedly arranged at one end of the winding cover plate, a second electric connecting seat is fixedly connected to the bottom of the extending part, a first electric connecting column is fixedly connected to the top of the first electric connecting seat, a second electric connecting column is connected to one end of the second electric connecting seat in a clamping mode, an induction coil is wound in the middle of the winding iron core, one end of the induction coil is fixedly connected with one side of the first electric connecting column, and one side of the second electric connecting column is electrically connected with the other end of the induction coil; the protective relay unit comprises two thermistors, wherein one thermistor is fixedly connected with the middle part of the other side of the iron frame, and the other thermistor is fixedly arranged in the middle part of one side of the inner wall of the relay box.

As a further scheme of the invention: the middle part of one side of the iron frame is connected with one side of the inner wall of the locking ring in an inserting manner, the other side of the inner wall of the locking ring is connected with a connecting sheet in an inserting manner, one end of the connecting sheet is fixedly connected with one end of the trigger elastic sheet, the middle part of the trigger elastic sheet is fixedly connected with a trigger plate, one side of the trigger plate is arranged corresponding to the bottom end of the wound iron core, one side of the connecting sheet is fixedly connected with a plastic push sheet, and one end of the plastic push sheet is fixedly connected with; conducting strips are inserted and connected to two sides of the other end of the top of the base, conducting heads are fixedly connected to the tops of the two conducting strips, connecting columns are fixedly connected to one sides of the two conducting heads, and one side of one connecting column is arranged corresponding to one side of the trigger head; one side of the trigger plate is provided with a plurality of uniformly distributed electric connection convex grooves.

As a further scheme of the invention: the inner wall of the second electric connection seat is provided with a cavity, the inner wall of the cavity is connected with a second electric connection pole in a sliding mode, one end of the second electric connection pole is fixedly connected with a conductive elastic sheet, the bottom of the inner wall of the cavity is fixedly connected with an electric connection elastic sheet, one side of the conductive elastic sheet is in abutting contact with one side of the electric connection elastic sheet, and one side of the electric connection elastic sheet is fixedly connected with the other end of the induction coil; the other end of the second electric connecting post is fixedly connected with a limiting piece, the middle of the second electric connecting post is fixedly connected with an ejection sleeve, the bottom of the ejection sleeve is fixedly connected with a separation spring, the tops of two sides of the second electric connecting seat are respectively provided with a through groove, the tops of two sides of the ejection sleeve are respectively fixedly connected with a pushing spring, one end of each of the two pushing springs is fixedly connected with a pushing block, one side of each of the two pushing blocks is respectively and alternately connected with one side of the inner wall of the two through grooves, the top of the second electric connecting seat is fixedly connected with an ejection ring, two sides of the inner wall of the ejection ring are respectively and fixedly provided with an ejection motor, the output end of each of the two ejection motors is respectively and fixedly connected with a cam, and one side of each of the two; one side fixedly connected with separation cylinder at relay box inner wall top, separation cylinder's output fixedly connected with separation piece, the bottom of separation piece corresponds the gap portion correspondence between two conducting strips and arranges, just the both sides of separation piece bottom all cut into the inclined plane.

As a further scheme of the invention: the protective relay unit further comprises a protective box, a storage battery is fixedly mounted on one side of the top of the inner wall of the protective box, a protective seat is fixedly mounted at the bottom of the inner wall of the protective box, a protective iron core is fixedly mounted on one side of the top of the protective seat, a protective coil is wound in the middle of the protective iron core, and the two thermistors are electrically connected with the storage battery and the protective coil; one side of one end of the protection seat is hinged with a protection touch plate through a spring hinge, the other side of one end of the protection seat is fixedly connected with a separation cushion block, and one side of the protection touch plate is fixedly connected with a push plate; the protection box comprises a protection box inner wall and is characterized in that a movable gasket is fixedly connected to the other side of the top of the protection box inner wall, a fixed gasket is fixedly connected to one side of the protection box inner wall, a separation cylinder and two pop-up motors are electrically connected with the movable gasket and the fixed gasket, and the movable gasket and the fixed gasket are electrically connected with a storage battery.

As a further scheme of the invention: fixedly connected with division board is put to the central point at shells inner wall middle part, the equal fixed mounting in both ends of division board has the exhaust fan, fixedly connected with a plurality of dislocation arrangement's guide plate on four lateral walls of shells inner wall, all seted up a plurality of vent on the middle part of division board and the outer wall of casing.

As a further scheme of the invention: the end part of the iron frame is fixedly connected with a limiting ball, the top of the other side of the iron frame is fixedly connected with a limiting stop block, and the other end of the trigger elastic sheet is fixedly connected with one side of the bottom of the bending plate through a reset spring.

As a further scheme of the invention: the setting is all buckled to the border portion of bottom plate both sides, and a plurality of fixed orifices has all been seted up at the middle part of two border portions, the equal fixedly connected with supporting seat in both sides at bottom plate top, a plurality of fixed slot, a plurality of have all been seted up at the top of two supporting seats the top of fixed slot corresponds with the bottom of a plurality of fixed orifices respectively and arranges.

As a further scheme of the invention: the working method of the relay comprises the following steps:

the method comprises the following steps: the supporting seats are fixedly installed at the using positions, then the two sides of the bottom plate are respectively clamped with the tops of the two supporting seats, the fixing holes and the fixing grooves are fixedly connected through a plurality of bolts or other connecting pieces, and then the relay is connected into a using circuit according to the connecting mode of a common relay;

step two: when the current in the circuit exceeds the threshold value of the relay, the induction coil is electrified, magnetic force generated by electromagnetic induction attracts the trigger plate, so that the trigger plate is contacted with the end head of the iron core, the trigger elastic sheet is bent to drive the connecting sheet to displace, the plastic push sheet pushes the trigger head, the trigger head pushes the connecting column, so that the two conductive heads are contacted, the two conductive sheets are communicated and conduct electricity, and the output circuit of the relay is switched on;

step three: when the relay work takes place unusually, induction coil or when triggering the first high temperature, the thermistor resistance reduces, when protection coil current reaches the threshold value, the protection touch panel receives to attract and contacts with protection core, the slurcam promotes the movable gasket and switches on with the fixed shim contact, make to pop out the motor start and drive the cam rotation, make to support the ejector pad and lead to the groove separation, pop out the sleeve and connect the electrical base separation with the second under the effect of separation spring, make the second connect electrical column and induction coil disconnection, the separation cylinder promotes the separation piece and moves down simultaneously, separate the separation to two conducting strips, the electricity between the disconnection conducting strip.

Compared with the prior art, the invention has the beneficial effects that: the invention relates to a relay with a protection function for an engineering vehicle, which is characterized in that a protection relay unit is arranged, when the temperature of an induction coil or a trigger head is overhigh, a pop-up motor is started, the pop-up motor drives a cam to rotate, so that a push block is separated from a through groove, a pop-up sleeve is separated from a second wiring seat under the action of a separation spring, a second wiring terminal is driven to be separated from the induction coil, the electrical input of the induction coil is thoroughly interrupted, a separation cylinder is started at the same time, a blocking sheet is driven to be pressed down, two conductive heads are separated, the current output to an external circuit is blocked, and due to the fact that the pop-up motor, the separation cylinder and the like are used for supplying power through an independent storage battery, when an external circuit is abnormal, the relay unit can also work normally; through setting up exhaust fan, guide plate and vent isotructure, to the inside ventilation that dispels the heat of casing, reduce external high temperature to the influence of relay work, through setting up casing, relay box and guard box isotructure simultaneously, improved the holistic shock resistance of relay.

Drawings

Fig. 1 is a sectional view of a main relay unit of a relay for a construction vehicle having a protection function;

fig. 2 is a perspective view of a relay for a construction vehicle having a protection function;

fig. 3 is a sectional view of a relay protection relay unit for a construction vehicle having a protection function;

FIG. 4 is a sectional view of a second electric pole of the relay for the engineering vehicle with the protection function;

fig. 5 is a top sectional view of a relay for a construction vehicle having a protection function.

In the figure: 1. a base plate; 2. a housing; 3. a relay box; 4. a base; 5. a bending plate; 6. winding the iron core; 7. a winding cover plate; 8. an iron frame; 9. a first electric connection seat; 10. a second electric connection seat; 11. a first electric connecting post; 12. a second electric connecting post; 13. an induction coil; 14. a thermistor; 15. locking a ring; 16. connecting sheets; 17. triggering the elastic sheet; 18. a trigger plate; 19. a plastic push sheet; 20. a conductive sheet; 21. connecting columns; 22. ejecting the sleeve; 23. a separation spring; 24. pushing the block; 25. a pop-up ring; 26. a cam; 27. separating the cylinder; 28. a barrier sheet; 29. a protection box; 30. a storage battery; 31. protecting the iron core; 32. a protection coil; 33. protecting the touch panel; 34. a push plate; 35. a removable shim; 36. fixing a gasket; 37. a partition plate; 38. a baffle; 39. a vent; 40. a limiting ball; 41. a return spring; 42. and (4) supporting the base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, in the embodiment of the present invention, an engineering vehicle relay with a protection function includes a base plate 1, a housing 2 is fixedly installed on the top of the base plate 1, a main relay unit is fixedly installed on one side of the middle portion of the inner wall of the housing 2, a protection relay unit is fixedly installed on the other side of the middle portion of the inner wall of the housing 2, the main relay unit includes a relay box 3, a base 4 is fixedly installed on the bottom of the inner wall of the relay box 3, a bending plate 5 is fixedly connected to one end of the top of the base 4, a winding iron core 6 is inserted and connected to one end of the top of the bending plate 5, the bottom end of the winding iron core 6 protrudes out of the bottom surface of the bending plate 5, a winding cover plate 7 is fixedly connected to the; a first electric connecting seat 9 is fixed at the other end of the top of the bending plate 5, an extending part is fixedly arranged at one end of the winding cover plate 7, a second electric connecting seat 10 is fixedly connected at the bottom of the extending part, a first electric connecting post 11 is fixedly connected at the top of the first electric connecting seat 9, a second electric connecting post 12 is connected at one end of the second electric connecting seat 10 in a clamping manner, an induction coil 13 is wound at the middle part of the winding iron core 6, one end of the induction coil 13 is fixedly connected with one side of the first electric connecting post 11, and one side of the second electric connecting post 12 is electrically connected with the other end of the induction coil 13; the protective relay unit comprises two thermistors 14, wherein one side of one thermistor 14 is fixedly connected with the middle part of the other side of the iron frame 8, and the other thermistor 14 is fixedly arranged in the middle part of one side of the inner wall of the relay box 3; the main relay unit is protected by the protective relay unit separated from the main relay unit, and the conditions of the induction coil 13 and the conducting strip 20 are sensed by the thermistor 14, so that the safety is high.

The middle part of one side of the iron frame 8 is connected with one side of the inner wall of the locking ring 15 in an inserting way, the other side of the inner wall of the locking ring 15 is connected with a connecting piece 16 in an inserting way, one end of the connecting piece 16 is fixedly connected with one end of a triggering elastic piece 17, the middle part of the triggering elastic piece 17 is fixedly connected with a triggering plate 18, one side of the triggering plate 18 is arranged corresponding to the bottom end of the wound iron core 6, one side of the connecting piece 16 is fixedly connected with a plastic push piece 19, and one end of the plastic; conductive strips 20 are respectively inserted and connected to two sides of the other end of the top of the base 4, conductive heads are respectively fixedly connected to the tops of the two conductive strips 20, connecting columns 21 are respectively fixedly connected to one sides of the two conductive heads, and one side of one connecting column 21 corresponds to one side of the trigger head; one side of the trigger plate 18 is provided with a plurality of uniformly distributed electric connection convex grooves; support through setting up plastics push jack 19 and push away conducting strip 20, prevent that electric current from crosstalking with connection piece 16 switch-on, through setting up spliced pole 21 and trigger head for plastics push jack 19 and the stable contact of conducting head guarantee the normal clear of relay work.

The inner wall of the second electric socket 10 is provided with a cavity, the inner wall of the cavity is connected with a second electric connecting post 12 in a sliding manner, one end of the second electric connecting post 12 is fixedly connected with a conductive elastic sheet, the bottom of the inner wall of the cavity is fixedly connected with an electric connecting elastic sheet, one side of the conductive elastic sheet is in abutting contact with one side of the electric connecting elastic sheet, and one side of the electric connecting elastic sheet is fixedly connected with the other end of the induction coil 13; the other end of the second electric connecting post 12 is fixedly connected with a limiting piece, the middle part of the second electric connecting post 12 is fixedly connected with an ejecting sleeve 22, the bottom of the ejecting sleeve 22 is fixedly connected with a separating spring 23, the tops of the two sides of the second electric connecting seat 10 are respectively provided with a through groove, the tops of the two sides of the ejecting sleeve 22 are respectively fixedly connected with a pushing spring, one end of each of the two pushing springs is fixedly connected with a pushing block 24, one side of each of the two pushing blocks 24 is respectively and alternately connected with one side of the inner wall of the two through grooves, the top of the second electric connecting seat 10 is fixedly connected with an ejecting ring 25, two sides of the inner wall of the ejecting ring 25 are respectively and fixedly provided with an ejecting motor, the output end of each of the two ejecting motors is respectively and fixedly connected with a; a separation cylinder 27 is fixedly connected to one side of the top of the inner wall of the relay box 3, a separation sheet 28 is fixedly connected to the output end of the separation cylinder 27, the bottom of the separation sheet 28 is correspondingly arranged corresponding to the gap between the two conducting sheets 20, and both sides of the bottom of the separation sheet 28 are cut into inclined planes; the pop-up motor is started, the pop-up motor drives the cam 26 to rotate, the pushing block 24 is abutted to be separated from the through groove, the pop-up sleeve 22 is separated from the second electric connection seat 10 under the action of the separation spring 23, the second electric connection column 12 is driven to be separated from the electric contact with the induction coil 13, the electric input of the induction coil 13 is thoroughly interrupted, meanwhile, the separation cylinder 27 is used for driving the separation sheet 28 to be pressed downwards, two conductive heads are separated, the current output of the external circuit is interrupted in the separation mode, and the safety of the circuit is guaranteed.

The protective relay unit further comprises a protective box 29, a storage battery 30 is fixedly mounted on one side of the top of the inner wall of the protective box 29, a protective seat is fixedly mounted at the bottom of the inner wall of the protective box 29, a protective iron core 31 is fixedly mounted on one side of the top of the protective seat, a protective coil 32 is wound in the middle of the protective iron core 31, and the two thermistors 14 are electrically connected with the storage battery 30 and the protective coil 32; one side of one end of the protection seat is hinged with a protection touch plate 33 through a spring hinge, the other side of one end of the protection seat is fixedly connected with a separation cushion block, and one side of the protection touch plate 33 is fixedly connected with a push plate 34; the other side of the top of the inner wall of the protection box 29 is fixedly connected with a movable gasket 35, one side of the inner wall of the protection box 29 is fixedly connected with a fixed gasket 36, the separation cylinder 27 and the two pop-up motors are electrically connected with the movable gasket 35 and the fixed gasket 36, and the movable gasket 35 and the fixed gasket 36 are electrically connected with the storage battery 30; the power is supplied by the independent storage battery 30, and the protection relay unit can work normally when an external circuit is abnormal, so that the operation reliability of the protection relay unit is improved.

A partition plate 37 is fixedly connected to the central position of the middle part of the inner wall of the shell 2, exhaust fans are fixedly mounted at both ends of the partition plate 37, a plurality of guide plates 38 which are arranged in a staggered manner are fixedly connected to four side walls of the inner wall of the shell 2, and a plurality of ventilation openings 39 are formed in the middle part of the partition plate 37 and the outer wall of the shell 2; through setting up exhaust fan, guide plate 38 and vent 39 isotructures, to the inside ventilation that dispels the heat of casing 2, reduce the influence of external high temperature to relay work.

The tip fixedly connected with spacing ball 40 of iron stand 8, the top fixedly connected with limit stop of iron stand 8 opposite side, the other end that triggers shell fragment 17 passes through reset spring 41 and the one side fixed connection of 5 bottoms of bent plate for connection piece 16 and trigger shell fragment 17 can be in time stable reset.

The edge parts on two sides of the bottom plate 1 are bent, a plurality of fixing holes are formed in the middle parts of the two edge parts, the two sides of the top of the bottom plate 1 are fixedly connected with supporting seats 42, a plurality of fixing grooves are formed in the tops of the two supporting seats 42, and the tops of the fixing grooves are arranged corresponding to the bottoms of the fixing holes respectively; stability when the installation of improvement relay through making 1 settings of buckling of bottom plate for 1 bottom of bottom plate possesses certain space, promotes the relay radiating effect.

The working method of the relay comprises the following steps:

the method comprises the following steps: the supporting seats 42 are fixedly installed at the using positions, then the two sides of the bottom plate 1 are respectively clamped with the tops of the two supporting seats 42, the fixing holes and the fixing grooves are fixedly connected through a plurality of bolts or other connecting pieces, and then the relay is connected into a using circuit according to the connecting mode of a common relay;

step two: when the current in the circuit exceeds the relay threshold value, the induction coil 13 is electrified, magnetic force generated by electromagnetic induction attracts the trigger plate 18, so that the trigger plate 18 is in contact with the end of the iron core, the trigger elastic sheet 17 is bent to drive the connecting sheet 16 to displace, the plastic push sheet 19 pushes the trigger head, the trigger head pushes the connecting column 21, so that the two conductive heads are in contact, the two conductive sheets 20 are communicated and conduct, and the relay output circuit is switched on;

step three: when the relay works abnormally, when the temperature of the induction coil 13 or the trigger head is too high, the resistance of the thermistor 14 is reduced, when the current of the protection coil 32 reaches a threshold value, the protection contact plate 33 is attracted and contacts with the protection iron core 31, the pushing plate 34 pushes the movable gasket 35 to be in contact conduction with the fixed gasket 36, the popup motor is started to drive the cam 26 to rotate, the pushing block 24 is abutted to be separated from the through groove, the popup sleeve 22 is separated from the second electric connection base 10 under the action of the separation spring 23, the second electric connection post 12 is disconnected from the induction coil 13, the separation cylinder 27 pushes the separation sheet 28 to move downwards, two conducting sheets 20 are separated, and the electric connection between the conducting sheets 20 is disconnected.

When the relay is used, the supporting seats 42 are fixed at the using position, then the two sides of the bottom plate 1 are respectively clamped with the tops of the two supporting seats 42, the fixing holes and the fixing grooves are fixedly connected through a plurality of bolts or other connecting pieces, and then the relay is connected into a using circuit according to the connecting mode of a common relay;

when the current in the circuit exceeds the relay threshold value, the induction coil 13 is electrified, the electromagnetic induction is far away from the magnetic force generated to attract the trigger plate 18, so that the trigger plate 18 is contacted with the end of the iron core, meanwhile, the trigger elastic sheet 17 is bent to drive the connecting sheet 16 to displace, so that the plastic push sheet 19 pushes the trigger head, the trigger head pushes the connecting column 21, so that the two conductive heads are contacted, the two conductive sheets 20 are communicated and conduct, namely, the relay output circuit is switched on;

in the working process of the relay, the exhaust fan is started to cool the inside of the shell 2, when the working of the relay is abnormal and the temperature of the induction coil 13 or the trigger head is overhigh, when the resistance of the thermistor 14 is reduced and the current of the protective coil 32 reaches a threshold value, the protective touch plate 33 is attracted and contacts with the protective iron core 31, the pushing plate 34 pushes the movable gasket 35 to be in contact with and conducted with the fixed gasket 36, so that the ejecting motor is started to drive the cam 26 to rotate, the pushing block 24 is separated from the through groove, the ejecting sleeve 22 is separated from the second electric connecting seat 10 under the action of the separating spring 23, so that the second electric pole 12 is disconnected from the induction coil 13, and the separation cylinder 27 pushes the separation blade 28 to move downwards, and the two conducting strips 20 are separated, and the electric connection between the conducting strips 20 is disconnected, so that the whole circuit of the relay is interrupted, and the protection of the relay and the whole circuit is realized.

"fixedly connected" as described in the present invention means that two parts connected to each other are fixed together, typically by welding, screwing or gluing; "rotationally coupled" means that two components are coupled together and capable of relative motion.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.