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Device and method for preparing subway composite contact rail

A composite contact and welding device technology, applied in the direction of power rails, etc., can solve the problems of easy reaction, high cost, and large current loss, and achieve the effects of excellent electrical conductivity, high-efficiency manufacturing, and super-length manufacturing

Inactive Publication Date: 2015-05-20
TAIZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of the I-shaped steel-aluminum composite contact rail is: there are many small holes drilled on the two side walls of the stainless steel strip, through which the aluminum alloy is connected with the riveting method, the processing process is numerous, the quality is not easy to control, and the combination is poor. higher cost
Its disadvantages are: J-shaped components are difficult to process and easy to deform; the two are not easy to achieve effective welding; the weld is in the middle of the contact rail, and the thermal influence of the welding process changes the local structure and properties of the steel and aluminum materials, and the welding will reduce The conductive effect between the contact rail and the brush affects the transmission of power
Due to the fact that the steel strip is easily deformed at high temperature, and the key technologies such as the easy reaction between the aluminum alloy and the steel strip have not been broken through, the conditions for trial production are not yet available.
[0006] In the current manufacturing method of the composite contact rail, the main problems are: there is a problem of poor contact on the steel-aluminum contact surface, which causes large current loss and high energy consumption during power supply; the ultra-long composite contact rail cannot be produced; the manufacturing cost higher
For the above reasons, the composite contact rail cannot meet the further development requirements of rail transit. Therefore, it is necessary to develop a new manufacturing device and method

Method used

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  • Device and method for preparing subway composite contact rail
  • Device and method for preparing subway composite contact rail
  • Device and method for preparing subway composite contact rail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The stainless steel strip 10 is stamped to form a groove 13, and the surface is cleaned and then sprayed with copper powder; the aluminum alloy body 14 is subjected to aging treatment after being extruded, and the surface is cleaned; the stainless steel strip 10 and the aluminum alloy body 14 are assembled together and slowly pushed into the Make the traction device clamp the composite rail and advance at a speed of 5mm / min; start the heating device 6 to heat the composite rail to about 180°C; start the top pressure device 4 to make the pressure of the hydraulic cylinder reach 30kN, and apply pressure to the top of the composite rail; Start the side pressure devices 2 and 5 on the left and right sides, so that the pressure of the hydraulic cylinder reaches 10kN, and apply pressure to the sides to make them compound; start the welding device 8, and realize welding connection to the two sides. After the composite contact rail is sintered at medium temperature and pressure ...

Embodiment 2

[0031] The stainless steel strip 10 is stamped to form a groove 13, and the surface is cleaned and then sprayed with copper powder; the aluminum alloy body 14 is subjected to aging treatment after being extruded, and the surface is cleaned; the stainless steel strip 10 and the aluminum alloy body 14 are assembled together and slowly pushed into the Make the traction device clamp the composite rail and move forward at a speed of 2mm / min; start the heating device 6, heat the composite rail to 200°C; start the top pressure device 4, make the pressure of the hydraulic cylinder reach 35kN, and apply pressure to the top of the composite rail; start The side pressure devices 2 and 5 on the left and right sides make the pressure of the hydraulic cylinder reach 15kN, apply pressure to the sides to make them composite; start the welding device 8, and realize welding connection to the sides. After the composite contact rail is sintered at medium temperature and pressure compounded, the co...

Embodiment 3

[0033] The stainless steel strip 10 is stamped to form a groove 13, and the surface is cleaned and then sprayed with copper powder; the aluminum alloy body 14 is subjected to aging treatment after being extruded, and the surface is cleaned; the stainless steel strip 10 and the aluminum alloy body 14 are assembled together and slowly pushed into the Make the traction device clamp the composite rail and move forward at a speed of 5mm / min; start the heating device 6, heat the composite rail to 220°C; start the top pressure device 4, make the pressure of the hydraulic cylinder reach 30kN, and apply pressure to the top of the composite rail; start The side pressure devices 2 and 5 on the left and right sides make the pressure of the hydraulic cylinder reach 10kN, apply pressure to the sides to make them composite; start the welding device 8, and realize welding connection to the sides. After the composite contact rail is sintered at medium temperature and pressure compounded, the co...

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Abstract

The invention discloses a device and a method for preparing a subway composite contact rail and belongs to the technical field of novel material preparing. The device for preparing the subway composite contact rail comprises a heating device, a top pressing device, a side pressing device, a welding device and a pulling device. When preparation is carried out, firstly, a stainless steel band roll is firstly made to be in a ladder shape, and a contact surface is punched to a pit. A dovetail groove is machined on an aluminum alloy rail body, and the contact surfaces of two materials are cleaned. Secondly, a layer of conductive powder is coated on the contact surface, and the two materials are composed through techniques of medium-temperature heating and pressuring. Eventually, continuous production of the composite contact rail with the length of 18 meters is achieved through a pulling method. The method for preparing the subway composite contact rail has the advantages of being stable in process, low in cost, free of pollution, suitable for continuous production and the like. The prepared aluminum steel composite contact rail is stable in performance, high in conductive efficiency, high in strength, super in length, and suitable for being used for preparing conductive materials supplying electricity for a subway and other devices for a long time.

Description

technical field [0001] The invention belongs to the technical field of new material preparation, and relates to a device and method for preparing a subway composite contact rail. Background technique [0002] Subway composite contact rail (contact rail) is a rigid transmission guide rail arranged along the subway electrified railway running rail and transmitting power to the locomotive. Because it is generally arranged on the side of two running tracks or in the middle of two tracks, it is also called " The third track", also known as "composite track". The contact rail is usually made of steel-aluminum composite materials, and is equipped with fishplates, cable connecting plates, end elbows and anchors to form the power supply system of the subway. [0003] The common structures of steel-aluminum composite contact rails are C-type, I-shaped double-wrapped type and I-shaped outsourced type. The overall structure of the C-shaped steel-aluminum composite contact rail is "C" ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M1/30B23P15/00
Inventor 付亚波陈卫平蔡培阳崔静
Owner TAIZHOU UNIV