CN218519562U - Busbar elastic suspension wire clamp - Google Patents

Abstract

An elastic suspension wire clip for a bus bar, comprising a wire clip body, the wire clip body includes an upper cylindrical connection part and a lower bus bar clamping part; an insulating shed is set on the periphery of the cylindrical connection part, and the A connecting bolt is embedded in the center of the insulating shed, elastic rubber is filled between the cylindrical connecting portion and the insulating shed, and the insulating shed is connected and fixed with the clamp body through the elastic rubber. The utility model ingeniously combines the insulating umbrella skirt with the elastic structure and the clamp body, which not only meets the elastic suspension requirements of the busbar, but also reduces the installation height and meets the use requirements of relatively small clearance in the tunnel.

Description

A bus elastic suspension clamp

technical field

The utility model relates to the technical field of urban rail transit equipment, in particular to an elastic suspension wire clip for busbars.

Background technique

With the rapid development of urban rail transit construction, the application of rigid overhead catenary is more and more extensive. The rigid overhead catenary is to suspend the bus bar horizontally above the line through the bus bar positioning clamp, and clamp the contact line through the bus bar. The existing busbar elastic positioning clamp (application number: 201020617001.8), including the body, connecting bolts and springs, has the following problems during use:

1. In the bend area, the axial force of the compression spring is uneven, which cannot completely absorb the impact energy brought by the pantograph, resulting in a large wear of the contact wire, and arcing will occur when the impact is severe.

2. An insulator needs to be installed on the top of the clamp when it is installed, and the headroom required for installation is relatively large, which cannot meet the relatively small headroom in the tunnel.

Utility model content

The utility model provides an elastic suspension clamp for a busbar to overcome the deficiencies in the prior art.

The technical solution adopted by the utility model is: a busbar elastic suspension wire clip, including a wire clip body, and the wire clip body includes an upper cylindrical connection part and a lower busbar clamping part; the cylindrical connection An insulating shed is set on the outer periphery of the outer part, and a connecting bolt is embedded in the center of the insulating shed. Elastic rubber is filled between the cylindrical connecting part and the insulating shed, and the insulating shed and the clamp body are connected by elastic rubber. The connection is fixed as one.

The center of the insulating shed has an embedded column extending to the bottom, and the embedded column is inserted into the center of the cylindrical connecting part and has a certain gap with the cylindrical connecting part; the lower part of the connecting bolt is embedded in the center of the embedded column, The upper portion protrudes from the top of the insulating shed.

The center of the clamping part of the bus bar is provided with a first injection hole through the cylindrical connection part, and a plurality of second injection holes are provided on the side wall of the cylindrical connection part, and the elastic rubber is injected from the first injection hole. The hole enters and fills the space between the cylindrical connection and the insulating shed through the second injection hole.

The inner and outer surfaces of the cylindrical connecting part are both rough surfaces, and the outer surface of the embedded column has ring teeth.

The outer wall of the lower end of the insulating shed has an annular convex edge, and the elastic rubber covers the annular convex edge.

Both sides of the clamping part of the bus bar are symmetrically provided with clamping grooves, the side walls of the clamping grooves are provided with limiting holes, and U-shaped wear-resistant splints are clamped in the clamping grooves, and the U-shaped wear-resistant The outer side of the splint has a positioning column, and the positioning column is inserted into the limiting hole.

Compared with the prior art, the utility model has the beneficial effects:

1. The utility model ingeniously combines the insulating shed with the elastic structure and the clamp body, which not only meets the elastic suspension requirements of the busbar, but also reduces the installation height and meets the use requirements of relatively small clearance in the tunnel.

2. The utility model adopts elastic rubber instead of the cylindrical spring. When the pantograph passes by, the vibration generated by the bus bar is transmitted to the elastic rubber through the clamp body as a whole, and the elastic deformation is generated by the elastic rubber to absorb the impact energy of the pantograph, so that the pantograph The pantograph runs more stably, the current receiving effect is better, the wear of the contact wire is reduced, and the service life of the pantograph and the contact wire is prolonged.

3. The utility model is light in weight (about 18% lighter than the existing structure), and the tensile failure load reaches above 18kN.

Description of drawings

Fig. 1 is a schematic sectional view of the structure of the utility model;

Fig. 2 is a schematic cross-sectional view of the embedded structure of the insulating umbrella skirt and connecting bolts of the present invention;

Fig. 3 is a schematic diagram of the structure of the utility model wire clamp body;

Fig. 4 is a schematic structural diagram of a U-shaped wear-resistant splint of the present invention.

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawing 1-4 specific embodiment.

An elastic suspension wire clip for busbars, including a wire clip body 2, the wire clip body 2 includes an upper cylindrical connecting part 2-1 and a lower busbar clamping part 2-2; the cylindrical connecting part 2 An insulating shed 1 is set on the periphery of -1, and a connecting bolt 3 is embedded in the center of the insulating shed 1. Elastic rubber 5 is filled between the cylindrical connecting part 2-1 and the insulating shed 1, and the elastic rubber 5 The insulating shed 1 is connected and fixed with the clamp body 2 as a whole.

In order to improve the bonding strength and reliability of the elastic rubber 5 , the insulating shed 1 and the clamp body 2 . The center of the insulating shed 1 has an embedded column 1-1 extending to the bottom, and the embedded column 1-1 is inserted into the center of the cylindrical connecting part 2-1 and has a certain gap with the cylindrical connecting part 2-1; The inner and outer surfaces of the cylindrical connecting portion 2-1 are both rough surfaces, and the outer surface of the embedded column 1-1 has ring teeth 1-2.

In order to prevent pollution from entering the interior of the insulating shed 1 and affecting the insulation performance, the outer wall of the lower end of the insulating shed 1 has an annular convex edge 1-3, and the elastic rubber 5 covers the annular convex edge 1-3.

In order to improve the connection strength and reliability between the connecting bolt 3 and the insulating shed 1. The lower part of the connecting bolt 3 is embedded in the center of the embedded column 1-1, and the upper part protrudes from the top of the insulating shed 1. And the connecting bolts 3 are embedded and fixed together when the insulating shed 1 is formed.

In order to facilitate injection of elastic rubber 5 and ensure that injection of elastic rubber 5 can fill all the gaps between the tubular connection portion 2-1 and the insulating shed 1. The center of the bus bar clamping part 2-2 is provided with a first pressure injection hole 2-3 passing through the cylindrical connection part 2-1, and a plurality of second pressure injection holes are provided on the side wall of the cylindrical connection part 2-1. Injection hole 2-4, the elastic rubber 5 enters from the first injection hole 2-3 and fills the gap between the cylindrical connecting portion 2-1 and the insulating shed 1 through the second injection hole 2-4.

In order to ensure that the busbar is reliably clamped and its position is accurate, the busbar clamping part 2-2 has clamping grooves 2-6 symmetrically on both sides, and the side wall of the clamping groove 2-6 is provided with a limiting hole 2- 5. A U-shaped wear-resistant splint 4 is clamped in the clamping groove 2-6, and the outside of the U-shaped wear-resistant splint 4 has a positioning column 4-1, and the positioning column 4-1 is inserted into the limit hole 2-5 in.

Wherein, the clamp body 2 is integrally casted by stainless steel, and the insulating shed 1 is made of a rigid insulating polymer composite material. The U-shaped wear-resistant splint 4 is made of conductive material.

When in use, the utility model is fixed and suspended above the line by connecting bolts, and the bus bar is clamped and positioned by the clamping grooves 2-6 and the U-shaped wear-resistant splint 6 . Affected by the gravity of the bus bar and the contact wire, the elastic rubber 5 is in a stretched state; when the pantograph of the train passes by here, the clamp body 2 is subjected to upward impact and vibration, and the elastic rubber 5 retracts upward to deform and absorb energy; After the pantograph passes here, the clamp body 2 returns to the original working state through the recovery of the elastic rubber 5 .

The above-described embodiments are only preferred embodiments of the present utility model, and are not used to limit the scope of implementation of the present utility model, so all equivalent changes made with the contents of the claims of the present utility model should be included in the claims of the present utility model. within the scope of requirements.

Claims (6)

1. A busbar elastic suspension clamp, characterized in that: it includes a clamp body (2), and the clamp body (2) includes an upper cylindrical connection part (2-1) and a lower busbar clamping part (2-2); the outer periphery of the cylindrical connecting part (2-1) is covered with an insulating shed (1), and the center of the insulating shed (1) is embedded with a connecting bolt (3). Elastic rubber (5) is filled between the connection part (2-1) and the insulating shed (1), and the insulating shed (1) and the clamp body (2) are connected and fixed as a whole through the elastic rubber (5) . 2. A busbar elastic suspension clamp according to claim 1, characterized in that: the center of the insulating shed (1) has an embedded column (1-1) extending to the bottom, and the embedded column ( 1-1) Insert into the center of the cylindrical connecting part (2-1) and have a certain gap with the cylindrical connecting part (2-1); the lower part of the connecting bolt (3) is embedded in the embedded column (1-1 ) central and upper parts stretch out the top of the insulating umbrella skirt (1). 3. A kind of busbar elastic suspension clamp according to claim 2, characterized in that: the center of the busbar clamping part (2-2) is provided with a first penetrating cylindrical connecting part (2-1). Injection holes (2-3), the side wall of the cylindrical connection part (2-1) is provided with a number of second injection holes (2-4), the elastic rubber (5) is injected from the first injection The hole (2-3) enters and fills the gap between the cylindrical connection part (2-1) and the insulating shed (1) through the second injection hole (2-4). 4. A busbar elastic suspension clamp according to claim 3, characterized in that: the inner and outer surfaces of the cylindrical connecting part (2-1) are both rough surfaces, and the embedded column (1 The outer surface of -1) has annular teeth (1-2). 5. A busbar elastic suspension clamp according to claim 4, characterized in that: the outer wall of the lower end of the insulating shed (1) has an annular convex edge (1-3), and the elastic rubber (5 ) wraps the annular convex edge (1-3). 6. A busbar elastic suspension clamp according to claim 5, characterized in that: the busbar clamping part (2-2) has clamping grooves (2-6) symmetrically on both sides, and the clamping part A limit hole (2-5) is provided on the side wall of the holding groove (2-6), and a U-shaped wear-resistant splint (4) is mounted inside the holding groove (2-6), and the U-shaped wear-resistant The outer side of the splint (4) has a positioning column (4-1), and the positioning column (4-1) is inserted into the limiting hole (2-5).

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