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Contact rail expansion joint

A technology for expansion joints and contact rails, applied in the fields of contact rail expansion joints and conductive rails, can solve the problems of reduced electrical conductivity and unstable current carrying capacity, and achieve the effects of not easy to wear, simple structure, and stable expansion and contraction.

Active Publication Date: 2012-11-07
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

It can be seen that this electrical connection method has the disadvantage of unstable current carrying capacity, and the main piece of the current connector and the sub-piece of the current connector are relatively thin, and after continuous wear and tear, the electrical conductivity is greatly reduced

Method used

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  • Contact rail expansion joint
  • Contact rail expansion joint
  • Contact rail expansion joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The contact rail expansion joint mainly includes a guide plate 3 for guiding the expansion and contraction of the contact rail and a manifold 4 for electrical connection. Specifically, the expansion joint of the contact rail can make several contact rails with a certain length be arranged longitudinally on the same straight line, and connected to form an electric rail for providing current for subway traffic trains. The cross section of the contact rail is "work" One of the bottom and top surfaces is the front in contact with the power receiving shoe, the other is the back in contact with the rigid bus plate, and the two sides of the front or the back are the sides for installing the guide plate. The distance between the contact rails depends on the longitudinal expansion and contraction of the two contact rails.

[0036] Such as figure 1 As shown, a guide plate 3 is connected to both sides of contact rail one 1 and contact rail two 2. Both ends of the guide plate 3 a...

Embodiment 2

[0044] Such as image 3 , Figure 4 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference is that there is also a line between the first contact rail 1 and the second contact rail 2, which is in line with the two contact rails and connected to the manifold 4-phase fixed fixed rail 8, the middle part of the guide plate 3 is fixedly connected with the fixed rail 8 through bolts 13 (such as bolts), and its two ends are respectively pressed against the side of the corresponding contact rail and slidably connected with the corresponding contact rail; And the manifold 4 is provided with a longitudinally penetrating chute 2 4b, and the ends of the contact rail 1 and the contact rail 2 2 are located in the chute 2 4b and cooperate with the chute 2 4b. When the first contact rail 1 and the second contact rail 2 expand and contract, both the first contact rail 1 and the second contact rail 2 slide relative to the manifold 4 .

[0045]...

Embodiment 3

[0047] Such as Figure 5 As shown, the structure and principle of the present embodiment and the second embodiment are basically the same, and the only difference is that the contact rail one 1 and the contact rail two 2 are respectively connected to the bus through the sliding plate two 7 fixed on the electrical connection surface thereof. The chute two 4b on the plate 4 cooperate, which can greatly reduce the wear and tear to the contact rail.

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PUM

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Abstract

The invention provides a contact rail expansion joint, belonging to the field of traffic facilities. The invention solves the problems of the existing expansion joint that the power outage is caused by low strength and easy wear, the installation and the sliding are affected by high strength, the current-carrying capacity is unstable and the like. The contact rail expansion joint is used for connecting a contact rail I and a contact rail II, wherein the contact rail I and the contact rail II are on the same line and the cross section of the contact rail I and the contact rail II is 'I-shaped'. The joint comprises a guide plate which is arranged between the two contact rails and guides the extension and the contraction of the contact rails. The invention is characterized in that a conductive long strip rigid bus plate is additionally arranged between the two contact rails and the bus plate is respectively in contact with the back surfaces of the two contact rails. The invention has theadvantages that the mechanical strength is high, the service life is long, the conductivity is strong because contact fingers are used as conducting pieces for electric connection, the contact pointsof the contact fingers in contact with the bus plate and the corresponding contact rails are always kept unchanged when the contact rails are extended or contracted and thereby the current-carrying capacity is ensured to be stable and constant.

Description

technical field [0001] The invention relates to a conductive rail in subway rail transit, in particular to a contact rail expansion joint, which belongs to the field of transportation facilities. Background technique [0002] The contact rail, also known as the third rail, is an important subsystem of the subway traction power supply system, which directly affects the safe operation of the subway power supply system and even the entire subway system. The contact rail is usually I-shaped, and it is arranged in parallel on the outside of the subway track. The power receiving shoe connected to the train acts on the top or bottom surface of the contact rail, and the power receiving shoe slides on the contact rail during the train’s travel, thereby Pass the current on the contact rail to the train power system. In order to solve the thermal expansion and contraction of the contact rail due to temperature changes, the contact rail is generally divided into several sections of a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M1/26
Inventor 宋晔宏徐剑林锡荣黄德量邹策何江海庞东阳廖明浩
Owner 浙江旺隆轨道交通设备有限公司