阅读说明：本技术 一种静接点座 (Static contact seat ) 是由 冯宏涛 于 2019-09-14 设计创作，主要内容包括：一种静接点座,包括设置在型腔内的静接点片和设置在型腔前端且置于静接点片外侧的压力件,压力件为一弹力片,且该弹力片前端通过曲面连接一与该弹力片前端重叠的弹力片段,该弹力片段触压在弹力片与静接点片之间；弹力片后端为环状面,与静接点片的后端环状面一起固定在接线端子螺栓上。通过前端具有蓄势弹力的弯曲弹力片段可以有效增强夹持力,同时有效避免现有技术的侧簧提供力不足的问题；用柔性上连接导线,克服了现有的将导线与接线端子螺栓底端连接存在爬电现象的弊端。(A static contact seat comprises a static contact sheet arranged in a cavity and a pressure piece arranged at the front end of the cavity and arranged outside the static contact sheet, wherein the pressure piece is an elastic sheet, the front end of the elastic sheet is connected with an elastic segment overlapped with the front end of the elastic sheet through a curved surface, and the elastic segment is contacted and pressed between the elastic sheet and the static contact sheet; the rear end of the elastic sheet is an annular surface and is fixed on the connecting terminal bolt together with the annular surface of the rear end of the static connecting point sheet. The clamping force can be effectively enhanced through the bending elastic segment with the accumulated elastic force at the front end, and the problem of insufficient force provided by the side spring in the prior art is effectively avoided; the flexible upper connecting wire overcomes the defect that creepage exists when the wire is connected with the bottom end of the bolt of the wiring terminal.)

1. The utility model provides a stationary contact seat, is including setting up stationary contact piece (3) in the die cavity and setting up at the die cavity front end and arranging in pressure spare (26) outside stationary contact piece (3), its characterized in that: the pressure piece (26) is an elastic sheet, the front end of the elastic sheet is connected with an elastic segment (25) overlapped with the front end of the elastic sheet through a curved surface, and the elastic segment (25) is contacted and pressed between the elastic sheet and the static joint sheet (3);

the rear end of the elastic sheet is an annular surface and is fixed on the wiring terminal bolt (2) together with the annular surface (1) of the rear end of the static joint sheet (3).

2. The stationary contact block as set forth in claim 1, wherein: the front end of the pressure piece (26) is provided with an outward arc-shaped bulge (27) adjacent to the curved surface, and the arc-shaped bulge (27) is placed in a fixed cavity (28) which is arranged at the front end of the cavity and extends outwards along the length direction of the static contact point seat.

3. The stationary contact block according to claim 1 or 2, wherein: a through hole (5) extending along the thickness direction of the static contact seat is formed in the rear side of the width direction of the static contact seat, an orifice of the through hole (5) arranged on the bottom surface of the static contact seat is composed of an arc-shaped yielding part (6) protruding outwards and a circular hole part (7) externally tangent and communicated with the arc-shaped yielding part (6), an anti-falling lug (8) is arranged on the inner side wall of the circular hole part (7) opposite to the arc-shaped yielding part (6), and after the wiring terminal bolt (2) is inserted from the arc-shaped yielding part (6) and is inserted into the through hole (5) after being deviated to the circular hole part (7), an end cap (9) of the wiring terminal bolt (2) is partially hidden behind the anti-falling lug (8);

the round hole part (7) is an inner hexagonal counter bore, and the end cap (9) is a hexagonal screw cap;

one end of the static contact piece (3) sleeved on the connecting terminal bolt (2) is an annular surface (10), one end of a wire (11) is welded on the annular surface (10), and the other end of the wire (11) is fixedly connected with a conducting ring (12);

the conducting ring (12) is sleeved on the wiring terminal bolt (2) and is fixed through the nut.

4. The stationary contact block as set forth in claim 3, wherein: the outer surface of the static joint seat is provided with a water-resisting edge (13), the water-resisting edge (13) is arranged between the adjacent static joint sheets (3), and the water-resisting edge (13) extends upwards from the bottom end of the rear side surface of the static joint seat and extends to the bottom end of the front side surface of the static joint seat after passing through the top surface of the static joint seat to form a semi-encircling water-isolating ring.

5. The stationary contact block as set forth in claim 4, wherein: the bottom corner of the joint sheet mounting clamping groove (14) at the outer side of the static joint sheet (3) is provided with a water chute or a water guiding notch (15).

6. The set of static contacts of claim 5, wherein: the water chute or the water guiding opening (15) extends downwards in an arc shape along the bottom corner of the joint sheet mounting clamping groove (14).

7. The set of static contacts of claim 4, wherein: a pressing block (17) which is pressed on the limiting spiral spring (4) is arranged at the front end of the bottom surface of the cover plate (16);

and a water-proof barrier (18) superposed with the water-proof edge (13) is arranged on the top surface of the cover plate (16).

8. The set of static contacts of claim 4, wherein: two mounting holes (24) are formed in the static contact seat, and the top contour edge of each mounting hole (24) extends upwards to penetrate through the cover plate (16) and is higher than the top surface of the cover plate (16).

Technical Field

The invention relates to a constant-pressure static contact base which is used for controlling the action of an electric point switch, representing the stop position state of a turnout and realizing electromechanical interlocking.

Background

In the prior electromechanical interlocking, particularly in the process of track signal operation, a signal in an opening direction depending on the operation of a vehicle is bypassed by passing or turning a line, and the signal is realized by the actions of a static contact group, a matched movable contact group and the like on an electric switch machine. Therefore, the dynamic and static contact points not only have higher requirements on structural performance and service life. Still lie in the safe handling in the various abominable environment of adaptation simultaneously to ensure the safe operation of railway, quiet contact group prior art can be divided into two types: one is the clamping force for maintaining contact by utilizing the self elasticity of the bending deformation of the contact piece in a static state, which is called as an elastic piece contact group for short; one is to design a spring plate in a dynamic state, which uses a screw rod as an axis and a torsion spring and a spring as external force of a contact plate to promote the movement of the contact plate to generate clamping force, which is called a constant-pressure contact base for short.

There is unsafe factor in current torsional spring and side spring device, the torsion like torsional spring and side spring produces variation or torsional spring fracture in different environment, the clamping-force that seriously influences the contact piece forms contact failure, influence signal transmission, make very big railway personnel incident, current stationary contact seat does not all have waterproof function, operation in sleet weather, the rainwater invasion causes the short circuit, bring very big potential safety hazard from this, stationary contact shell fragment contact group, constant voltage contact group all ubiquitous clamping-force is unbalanced, influence conducting switch's delay in the twinkling of an eye asynchronous and produce electric arc, serious error signal that leads to, the problem of incident takes place.

As shown in fig. 1, in actual use, as the stud, i.e., the bottom of the terminal bolt 2, i.e., the lower stud 22, is connected with the copper wire or the bridge connection wire 23, creepage is easily generated between adjacent terminal pieces in a rainwater or wet environment, so that the contact seat is burnt due to electric leakage, and normal operation is seriously affected; in addition, the connection mode has the phenomenon that copper wires or bridging wires are loosened after the copper wires or the bridging wires are used for multiple times, so that poor power connection is caused, and operation faults occur.

It can also be seen from fig. 1 that the present torsion spring 19 is adopted to provide a torque force or a clamping force to the stationary contact piece 3, and the nut 21 and the square washer 20 are used to limit the terminal bolt 2 and prevent the terminal bolt from rotating.

Disclosure of Invention

The invention aims to solve the unsafe factors of the existing torsion spring and side spring devices in the background art and provide a static contact seat which is reliable in wiring, free from creepage and firm in contact with a conductive wire.

In order to achieve the purpose, the invention provides a static contact point seat which comprises a static contact point sheet arranged in a cavity and a pressure piece arranged at the front end of the cavity and arranged on the outer side of the static contact point sheet, wherein the pressure piece is an elastic sheet, the front end of the elastic sheet is connected with an elastic segment overlapped with the front end of the elastic sheet through a curved surface, and the elastic segment is contacted and pressed between the elastic sheet and the static contact point sheet;

the rear end of the elastic sheet is an annular surface and is fixed on the connecting terminal bolt together with the annular surface of the rear end of the static connecting point sheet.

The front end of the pressure piece is provided with an outward arc-shaped bulge close to the curved surface, and the arc-shaped bulge is placed in a fixed cavity at the front end of the cavity and extends outwards along the length direction of the static contact seat.

The rear side of the width direction of the static contact seat is provided with a through hole extending along the thickness direction of the static contact seat, the hole opening of the through hole, which is arranged on the bottom surface of the static contact seat, consists of an arc yielding part protruding outwards and a circular hole part externally tangent and communicated with the arc yielding part, and an anti-falling lug is arranged on the inner side wall of the circular hole part, which is opposite to the arc yielding part, so that after the wiring terminal bolt is inserted from the arc yielding part and is inserted into the through hole after deviating towards the circular hole part, the end cap of the wiring terminal bolt is partially hidden behind the anti-falling lug;

the round hole part is an inner hexagonal counter bore, and the end cap is a hexagonal screw cap;

one end of the static contact piece, which is sleeved on the wiring terminal bolt, is an annular surface, one end of a wire is welded on the annular surface, and the other end of the wire is fixedly connected with a conducting ring;

the conducting ring is sleeved on the wiring terminal bolt and is fixed through the nut.

The outer surface of the static contact seat is provided with a water-proof edge, the water-proof edge is arranged between the adjacent static contact pieces, and the water-proof edge extends upwards from the bottom end of the back side surface of the static contact seat and extends to the bottom end of the front side surface of the static contact seat through the top surface of the static contact seat to form a semi-encircling water-proof ring.

The bottom corner of the joint sheet mounting clamping groove on the outer side of the static joint sheet is provided with a water chute or a water guiding notch.

The water chute or the water guiding opening extends downwards in an arc shape along the bottom corner of the contact piece mounting clamping groove.

A pressing block which is pressed on the limiting spiral spring is arranged at the front end of the bottom surface of the cover plate;

and the top surface of the cover plate is provided with a water-proof baffle superposed with the water-proof edge.

Two mounting holes are formed in the static contact seat, and the top contour edge of each mounting hole extends upwards to penetrate through the cover plate and is higher than the top surface of the cover plate.

The invention has the advantages that: the clamping force can be effectively enhanced through the bending elastic segment with the accumulated elastic force at the front end, and the problem of insufficient force provided by the side spring in the prior art is effectively avoided; the flexible upper connecting lead is adopted, the defect that the existing lead is connected with the bottom end of a bolt of a wiring terminal to cause a creepage phenomenon is overcome, and the flexible upper connecting lead has the advantages of simplicity and convenience in operation, firmness and no creepage phenomenon; the front side surface, the rear side surface and the top surface of the static contact seat are completely isolated from the left static contact sheet and the right static contact sheet by adopting water-resisting edges, so that series connection and conduction caused by water are effectively prevented; meanwhile, a water chute or a water guide opening is formed in the outer side (the outer side of the joint sheet) of the outer edge of the mounting clamping groove of the static joint sheet (the group of static joint sheets comprises the left static joint sheet and the right static joint sheet), so that water is guided away more favorably, and the safety is further improved.

Drawings

Fig. 1 is a schematic view of a conventional stationary contact base.

Fig. 2 is a schematic view of the assembling position of the pressure member and the static joint sheet.

Fig. 3 is a schematic view of another assembling position of the pressure member and the static joint sheet.

Fig. 4 is a top view of a prior art stationary contact set without a cover.

Fig. 5 is a perspective view of a modified stationary contact group.

Fig. 6 is a bottom view of the improved stationary contact group.

Fig. 7 is a schematic view of an improved static contact patch and connecting wires and conductive rings.

Fig. 8 is a front side view of the improved set of static contact points.

Fig. 9 is a schematic view of the bottom structure of the improved upper cover.

Fig. 10 is a schematic diagram of a top structure of the improved upper cover.

Description of reference numerals:

1. a stationary contact base; 2. a terminal stud; 3. a static contact sheet; 4. a limiting helical spring; 5. perforating; 6. an arc-shaped position-giving part; 7. a circular hole portion; 8. an anti-drop bump; 9. an end cap; 10. an annular face; 11. a wire; 12. conducting rings; 13. water-resisting edges; 14. the contact piece is provided with a clamping groove; 15. a water chute or a water opening; 16. a cover plate; 17. briquetting; 18. water insulation and blocking; 19. a torsion spring; 20. a square gasket; 21. a nut; 22. a lower stud; 23. copper wire or bridge connection; 24. mounting holes; 25. an elastic segment; 26. a pressure member; 27. and an arc-shaped bulge.

Detailed Description

In order to solve the unsafe factors existing in the existing torsion spring and side spring devices, the embodiment provides a stationary contact base, which includes a stationary contact piece 3 disposed in a cavity and a pressure member 26 disposed at the front end of the cavity and disposed outside the stationary contact piece 3, as shown in fig. 2, the pressure member 26 is an elastic piece, and the front end of the elastic piece is connected with an elastic segment 25 overlapped with the front end of the elastic piece through a curved surface, the elastic segment 25 is contacted and pressed between the elastic piece and the stationary contact piece 3; the rear end of the elastic sheet is an annular surface and is fixed on the wiring terminal bolt 2 together with the annular surface 1 at the rear end of the static contact sheet 3.

Meanwhile, the pressure piece 26 shown in fig. 3 is provided, and the front end of the pressure piece is provided with an outward arc-shaped bulge 27 adjacent to the curved surface, and the arc-shaped bulge 27 is placed in a fixed cavity 28 at the front end of the cavity, which extends outwards along the length direction of the stationary contact seat, so that the structure of the existing cavity can be fully utilized on the premise of not changing the structure of the existing cavity, and the maximum stability and reliability of the pressure piece 26 are realized.

As can be seen from fig. 4 and 5, the terminal bolt 2 disposed on the stationary contact base and the stationary contact piece 3 having one end sleeved on the terminal bolt 2 and fixed by the nut 21; an elastic piece 4 is arranged on the static contact point seat and on the outer side of the static contact point sheet 3, so that when the movable contact point is driven into the static contact point group, force is applied to the static contact point sheet 3, and the close contact between the static contact point sheet 3 and the movable contact point is ensured; a cover plate 16 is arranged on the top surface of the stationary contact base at the front side of the wiring terminal bolt 2, a through hole 5 which is shown in fig. 6 and extends along the thickness direction of the stationary contact base 1 is arranged on the rear side of the width direction of the stationary contact base 1, an orifice of the through hole 5, which is arranged on the bottom surface of the stationary contact base 1, is composed of an arc-shaped relief part 6 protruding outwards and a circular hole part 7 externally tangent to and communicated with the arc-shaped relief part 6, an anti-falling lug 8 is arranged on the inner side wall of the circular hole part 7 opposite to the arc-shaped relief part 6, so that after the wiring terminal bolt 2 is inserted from the arc-shaped relief part 6 and inserted into the through hole 5 after deviating towards the circular hole part 7, an end cap 9 of the wiring terminal bolt 2 is partially hidden behind the anti-falling lug 8, and thus when dismounting and maintaining, the wiring terminal bolt 2 can be effectively prevented. The round hole part 7 is preferably an inner hexagonal counter bore, the end cap 9 is also a hexagonal nut, the whole wiring terminal bolt 2 can be limited and prevented from rotating in the screwing or unscrewing process, and the mounting and the dismounting are convenient.

The biggest bright point of this embodiment is that the end of the static contact piece 3 shown in fig. 7, which is sleeved on the terminal bolt 2, is an annular surface 10, and the annular surface 10 is welded with one end of a wire 11, the other end of the wire 11 is fixedly connected with a conductive ring 12, the conductive ring 12 is arranged to be sleeved on the wiring terminal bolt 2, and is pressed and fixed by a nut, the structure has the advantages that the rolling end of the static joint sheet 3 is an annular surface 10, and is easy to process compared with the prior middle hole, the welding lead 11 has large area, good enough contact area and good conductivity, and the mode of the financial nut crimping conductive ring 12 is very convenient for fixing, and is convenient and more important for installation and maintenance, the structure effectively avoids the defect that creepage is easy to generate when a copper wire or a bridging wire is installed at one end of the bottom surface of the wiring terminal bolt 2 in the prior art.

As is apparent from fig. 5 and 8, in order to better insulate water and ensure water insulation between adjacent static contact pieces, the outer surface of the static contact base 1 provided in this embodiment is provided with a water-proof rib 13, the water-proof rib 13 is disposed between the adjacent static contact pieces 3, and the water-proof rib 13 extends upward from the bottom end of the rear side of the static contact base 1 and extends to the bottom end of the front side of the static contact base 1 after passing through the top surface of the static contact base 1, so as to form a semi-encircling water-proof ring.

Meanwhile, in order to efficiently guide away water as soon as possible and avoid water accumulation, in this embodiment, a water guiding groove or a water guiding notch 15 is formed in the bottom corner of the contact piece mounting clamping groove 14 on the outer side of the static contact piece 3, so that water is guided away in time, and the water guiding groove or the water guiding notch 15 extends downwards in an arc shape along the bottom corner of the contact piece mounting clamping groove 14, so that the water guiding characteristic can be improved, and the water guiding device has a guiding function.

As shown in fig. 9, the front end of the bottom surface of the cover plate 16 is provided with a pressing piece 17 that presses against the position restricting coil spring 4, and at the same time, has a function of preventing the cover plate 16 from shifting forward, backward, leftward, and rightward, and the top surface of the cover plate 16 (see fig. 10) is provided with a water blocking stopper 18 that overlaps the water blocking rib 13. Two mounting holes 24 are formed in the stationary contact base 1, and the top contour edge of the mounting hole 24 extends upwards to penetrate through the cover plate 16 and is higher than the top surface of the cover plate 16, so that the water-resisting and water-guiding effects are achieved.