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An eddy current rail braking system and its wear plate

A braking system and wear plate technology, applied in railway braking systems, brakes where braking elements interact with rails, brake wear compensation mechanisms, etc. , to achieve good thermal conductivity, eliminate magnetic gaps, and enhance the effect of eddy current effects

Active Publication Date: 2019-11-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing eddy current track braking system adopted by ICE3 uses pressure release and lowering to ensure that the air cylinder operates when the air system fails, when the circuit fails, the loss of excitation will directly lead to the loss of braking force
In addition, when the power supply is cut off when the train is parked, the natural eddy current braking system cannot work

Method used

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  • An eddy current rail braking system and its wear plate
  • An eddy current rail braking system and its wear plate
  • An eddy current rail braking system and its wear plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The Cu-1wt.%Fe alloy (heat conduction part 5) and nylon (wear part 4) are compounded according to the volume fraction of 80% and 20% respectively to prepare wear plate 11, the thickness and width of heat conduction part 5 and wear part 4 Respectively consistent, the length of the heat conduction part 5 is 16 mm, the length of the wear part 4 is 4 mm, and the front end of the wear plate 11 in the length direction is the wear part 4 . The wear plate 11 has a total thickness of 10 mm, a width consistent with the width of the rail surface, and a length consistent with the length of the magnetic system unit. Groove one side of the wear plate 11, wherein the main air channel 7 has a width of 2 mm and a depth of 2 mm; the auxiliary air channel 8 in the direction of +45 degrees has a width of 1 mm and a depth of 1 mm. Such as Figure 4 As shown, the connecting portion 2 of the wear plate 11 is fixed to the magnetic system unit, and the fixing method can be adhesive or mechanic...

Embodiment 2

[0036]Composite Cu-10wt.%Fe (heat conducting part 5) alloy and polyimide (wearing part 4) according to the volume fraction of 60% and 40% respectively to prepare wearing plate 11, alloy block (heat conducting part 5) and polyimide The thickness and width of the imide block (wear-resistant part 4) are the same, the length of the alloy block (heat-conducting part 5) is 6 mm, and the length of the polyimide block (wear-resistant part 4) is 4 mm. The front end is a polyimide block (wear part 4). The wear plate 11 has a total thickness of 15 mm, a width consistent with the width of the rail surface, and a length consistent with the length of the magnetic system unit. One side of the wear plate 11 is grooved, the main air channel 7 has a width of 5 mm and a depth of 5 mm; the auxiliary air channel 8 in the direction of +45 degrees has a width of 3 mm and a depth of 3 mm. The wear plate connecting portion 2 is fixed to the magnetic system unit, and the fixing method can be adhesive ...

Embodiment 3

[0038] Composite Cu-2wt.%Fe-5 wt.%Ni alloy (heat conduction part 5) and nylon (wear part 4) according to the volume fraction of 70% and 30% respectively to prepare wear plate 11, alloy block (heat conduction part 5 ) is consistent with the thickness and width of the nylon block (wear-resistant part 4), the length of the alloy block (heat-conducting part 5) is 7 mm, the length of the nylon block (wear-resistant part 4) is 3 mm, and the front end of the wear plate 11 in the length direction is Nylon block (wear piece 4). The total thickness of the wear plate is 10 mm, the width is consistent with the width of the rail surface, and the length is consistent with the length of the magnetic system unit. One side of the wear plate 11 is grooved, the main air channel 7 has a width of 3 mm and a depth of 3 mm; the auxiliary air channel 8 in the direction of +45 degrees has a width of 2 mm and a depth of 2 mm. The connecting portion 2 of the wearing plate 11 is fixed to the magnetic sy...

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Abstract

The invention discloses a wearing plate for an eddy current rail braking system. The wearing plate for the eddy current rail braking system comprises a main body; a connecting part which can be fixedtogether with a rail braking system coil, and friction parts are arranged on the main body; the friction parts consist of wear resistant pieces and heat conducting pieces; the wear resistant pieces and the heat conducting pieces are arranged in the axial direction in a spaced manner; the two ends of the friction parts are wear resistant pieces; a cooling gas passage is formed in the friction parts; the cooling gas passage consists of a main gas passage and auxiliary gas passages; the main gas passage penetrates through the friction parts in the axial direction; inlets of the auxiliary gas passages are in communication with the main gas passage; and outlets of the auxiliary gas passages are positioned on the side surface of the body of the wearing plate. The invention further discloses theeddy current rail braking system; the wearing plates are welded at the bottoms of braking coils; the friction parts of the wearing plates are right against a train steel rail; and one wearing plate iswelded at the bottom of each braking coil. According to the wearing plate for the eddy current rail braking system, friction braking is additionally provided on the basis of electromagnetic force braking, the wearing plate is guaranteed to work within an appropriate temperature range; and meanwhile, appropriate heat conducting performance and friction performance of the wearing plate are guaranteed.

Description

technical field [0001] The invention relates to a rail braking system, in particular to a hybrid eddy current rail braking system and a wear plate thereof. Background technique [0002] The shortage of railway transport capacity has become one of the main contradictions restricting the development of my country's economic construction. Due to its advantages of large transportation capacity, safety and comfort, all-weather transportation and sustainability, high-speed railway has become the basic trend of railway development and the basic guarantee for national modernization. According to the "Medium and Long-Term Railway Network Planning", the construction mileage of my country's high-speed railway will reach 18,000 kilometers in 2020. [0003] Braking technology is one of the nine key technologies of high-speed trains and is the "protector of life". During the braking process, the braking power is proportional to the cube of the train speed and inversely proportional to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61H7/08B61H15/00B61F19/06
CPCB61F19/06B61H7/083B61H15/00
Inventor 马吉恩方攸同许博文黄晓艳刘嘉斌
Owner ZHEJIANG UNIV
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