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Expansion joint of contact rail

A technology of expansion joints and contact rails, which is applied in the field of rail transit, can solve the problems of complex structure of contact rails, increased weight of contact rails, and increased production costs, and achieve the effects of simple structure, stable flow diversion, and long service life

Active Publication Date: 2017-08-25
浙江旺隆轨道交通设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, through two sets of connection structures of mechanical connection and conductive connection, the structure of the contact rail is complicated, the production cost is significantly increased, and the weight of the contact rail is significantly increased.

Method used

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  • Expansion joint of contact rail
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  • Expansion joint of contact rail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, the contact rail 1 is in the shape of "I", and the two sides of the contact rail 1 are respectively formed with accommodating grooves 11 distributed along the length direction of the contact rail 1. The contact rail 1 is a segmented structure. In this embodiment, two sections The contact rails 1 are located on the same straight line, and an expansion gap is reserved between two sections of the contact rails 1 . The expansion joint of this contact rail includes a connection block 2 , a compression bolt 3 and a spring contact finger 4 .

[0040] Specifically, as image 3 As shown, the connection block 2 is in the shape of a strip and is made of conductive material, and the conductive material can be selected from aluminum, copper or aluminum alloy. The cross section of the connection block 2 is trapezoidal, and the width of the inner end surface of the connection block 2 is smaller than the width of the outer end surface, and both sides are sl...

Embodiment 2

[0051] The technical solution in this embodiment is basically the same as the technical solution in Embodiment 1, the difference is that in this embodiment, such as Figure 9 As shown, the bottom of the receiving groove 11 of one section of the contact rail 1 has an elongated guide hole 12 for the compression bolt 3 to pass through, and the compression bolt 3 can slide along the length direction of the guide hole 12 .

Embodiment 3

[0053] The technical solution in this embodiment is basically the same as the technical solution in embodiment one or embodiment two, the difference is that, as Figure 10 As shown, in this embodiment, the spring contact fingers 4 are fixed on both sides of the bottom of the receiving groove 11 by fixing screws 5 , and the inner end surface of the connecting block 2 has contact grooves corresponding to the positions and shapes of the spring contact fingers 4 . Fixing the spring contact fingers 4 on the busbar 1 also enables an electrically conductive connection of the connection block 2 to the busbar 1 .

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Abstract

The invention provides an expansion joint of a contact rail, which belongs to the technical field of rail transportation. It solves the problem of complex structure of the expansion joint of the existing contact rail. The expansion joint of the contact rail includes two elongated connection blocks respectively arranged in the accommodation grooves on both sides of the contact rail. The shape of the connection block matches the shape of the accommodation groove. The connection between the block and the two contact rails is pressed by at least one compression bolt that passes through the two connecting blocks respectively. The two contact rails can slide relative to each other along the length direction of the connecting block. The connecting block is made of conductive material. There is a gap between the two side surfaces of the block and the two inner side walls of the containing groove, and a spring contact finger in the shape of a strip is arranged between the inner end surface of the connecting block and the bottom of the containing groove. The expansion joint of the contact rail realizes a set of expansion joints to simultaneously realize the mechanical connection and the conductive connection of the connecting block and the contact rail, so that the structure of the contact rail is simpler and the weight is lighter.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and relates to a contact rail, in particular to an expansion joint of the contact rail. Background technique [0002] Caterpillar power supply is a common method of power supply for urban rail transit. Caterpillar power supply adopts a rigid power supply track at a distance of 30cm to 50cm from the outside of the running rail and about 30cm above the ground. The vehicle collector shoe passes through its lower surface Or take the flow from the upper surface to provide power for the vehicle. [0003] Since the contact rail is the third track besides the two running rails, the contact rail is also called the third rail. The contact rail is usually in the shape of "I", and the modern contact rail is mostly made of steel-aluminum composite material, so that the contact rail has a larger carrying capacity. However, due to the change of ambient temperature and the heat generated by the passage of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M1/26
Inventor 宋晔宏徐剑郑国伟李海洋倪文光
Owner 浙江旺隆轨道交通设备有限公司
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