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External sliding type expansion junction for contact rail

A technology of expansion joints and contact rails, applied in the direction of power rails, etc., can solve the problems of reduced electrical conductivity and unstable current carrying capacity, and achieve the effects of not easy to wear, long service life, and large contact area

Active Publication Date: 2010-09-08
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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  • External sliding type expansion junction for contact rail
  • External sliding type expansion junction for contact rail
  • External sliding type expansion junction for contact rail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The joint is located between two contact rails 1 and 2 which are located on the same straight line and have an "I"-shaped cross section. One of the bottom and top surfaces of the two contact rails 1 and 2 is connected to the power receiving shoe. The front side is in contact, the other is the back side in contact with the electrical connector, the sides of the front side or the back side are the sides for installing the guide plate, and the distance between two adjacent contact rails depends on the longitudinal expansion and contraction of the two contact rails quantity.

[0032] like figure 1 As shown, the outer sliding contact rail expansion joint mainly includes a guide plate 3 , a rigid guide rail 4 and an electrical connector 5 . Wherein, the guide plate 3 guides the expansion and contraction of the two contact rails 1 and 2. Since the length dimension of the contact rail is much larger than its width dimension, the expansion and contraction of the contact rail ma...

Embodiment 2

[0039] like image 3 As shown, the structure and principle of this embodiment are basically the same as those of Embodiment 1, the only difference being that there is also a piece at the interval between the first contact rail 1 and the second contact rail 2 which is in line with the two contact rails 1 and 2. The fixed rail 8, the fixed rail 8 has the same section shape as the contact rail 1 and the contact rail 2 2, but the length is much shorter than the contact rail 1 and the contact rail 2 2, and the middle part of the fixed rail 8 is connected with the guide plate 3 by the bolt 9 The phase is fixed, and the fixed rail 8 and the rigid guide rail 4 are also connected by an electrical connector 5, which is connected in the same way as the electrical connector 5 between the contact rail one 1 and the rigid guide rail 4. Since the fixed rail 8 is arranged between the two contact rails 1 and 2 in this structure, a space is reserved at both ends of the fixed rail 8. Obviously, ...

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Abstract

The invention discloses an external sliding type expansion junction for a contact rail, belonging to the field of traffic facilities. The invention solves the problems that the traditional expansion junctions are easy to wear and power-off, or installation and sliding are affected due to high strength, or ampacity is unstable and the like. The invention is characterized in that the external sliding type expansion junction for the contact rail is used to be connected with a contact rail I and a contact rail II which are in the same straight line and have 'I' shaped cross sections; the junction comprises a guide plate arranged between the two contact rails, the backs of the two contact rails are provided with at least one conductive rigid guide rail which is parallel to the guide plate; and electric connectors are respectively arranged between the rigid guide rail and the back of the contact rail I as well as the rigid guide rail and the the back of contact rail II, which can lead the rigid guide rail to be electrically conducted with the contact rail I and the contact rail II. The invention has the advantages of uneasy abrasion and crack and long service life. And whether the contact rail elongates or shortens, the contact areas between the contact rail and the electric connectors as well as the electric connectors and the rigid guide rail maintain unchanged from beginning to end, thereby ensuring constant and steady ampacity.

Description

technical field [0001] The invention relates to a conductive rail in subway rail transit, in particular to an outer sliding 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 ...

Claims

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Application Information

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IPC IPC(8): B60M1/30
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
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