Braking force distribution method, device and system for urban rail train

A technology of braking force distribution and braking system, applied in the field of braking force distribution of urban rail trains, can solve problems such as prolonged braking distance, reduced braking force, scratches on wheel treads, etc., and achieve the effect of reducing the probability of skidding

Active Publication Date: 2020-11-27
CRRC TANGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the coefficient of dynamic friction is much smaller than the coefficient of static friction, once this working condition occurs, the braking force will be greatly reduced and the brakin

Method used

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  • Braking force distribution method, device and system for urban rail train
  • Braking force distribution method, device and system for urban rail train
  • Braking force distribution method, device and system for urban rail train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 It is a flow chart of braking force distribution of a braking force distribution method for urban rail trains according to an embodiment of the present application. Such as figure 1 As shown, a method for distributing braking force of an urban rail train in the embodiment of the present application includes the following steps:

[0028] Step S100: Obtain the total braking force target of the train and the total electric braking capacity that all motor cars of the train can provide; wherein, the total braking force target is calculated by the train braking system, and the total electric braking capacity is calculated by the train traction system Calculate;

[0029] The train traction system feeds back the total electric braking capacity to the train braking system through the train network system;

[0030] The train braking system compares the total electric braking capacity and the total braking force target. After the comparison, two situations will appear:...

Embodiment 2

[0050] The braking force distribution method for urban rail trains in the embodiment of the present application is a braking force distribution method based on the first embodiment of the present application.

[0051] The embodiment of the present application is a braking force distribution method in the case that the leading car and the trailing car of the urban rail train are trailers.

[0052] During the implementation, when the leading car and the trailing car are trailers, the braking force allocation method is implemented until the total electric braking capacity is less than the total braking force target, the total electric braking capacity is allocated to all the motor vehicles, and an average distribution is made to the middle vehicle. During this step of level air braking force, the actual braking force of the train is provided by the middle car, and the leading car and the trailing car do not provide the actual braking force.

[0053] When the actual total braking ...

Embodiment 3

[0077]The braking force distribution method for urban rail trains in the embodiment of the present application is a braking force distribution method based on the first embodiment of the present application.

[0078] The embodiment of the present application is the braking force distribution method when the head car and the trailing car of the urban rail train are bullet trains. Car, tail car and middle car are offered together.

[0079] The braking force distribution method for urban rail trains in the embodiment of the present application is a braking force distribution method based on the first embodiment of the present application.

[0080] In the embodiment of the present application, when the head car and the tail car of the urban rail train are motor cars, the braking force distribution method allocates the total electric braking capacity for all motor cars when the total electric braking capacity is less than the total braking force target, which is the middle After t...

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PUM

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Abstract

The embodiment of the invention provides a braking force distribution method, device and system for an urban rail train. The braking force distribution method comprises the following steps of acquiring a total braking force target of a train and a total electric braking capacity which can be provided by all bullet trains of the train, wherein the total braking force target is calculated by a trainbraking system, and the total electric braking capacity is calculated by a train traction system; and when the total electric braking capacity is smaller than the total braking force target, using the train braking system to distribute the total electric braking capacity to all bullet trains, and using the train braking system to equally distribute a first-level air braking force to the middle train, wherein the first-level air braking force is equal to a difference value between the total braking force target and the total electric braking capacity. According to the embodiment of the invention, a technical problem that the urban rail train is high in probability of sliding is solved.

Description

technical field [0001] The present application relates to the technical field of urban rail trains, in particular, to a braking force distribution method, device and system for urban rail trains. Background technique [0002] The stuck state is a state during actual operation of the train. When the train brakes, the wheels roll on the rail. Due to the gravity of the vehicle, the contact between the vehicle and the rail is a small oval area. At this time, the wheel-rail contact is neither a static state nor a sliding state, but a state of "slight movement in stillness" or "slight slippage in rolling", which is called "sticking" in railway terminology. The phenomenon of keeping the contact between the moving wheel and the rail relatively stationary due to positive pressure is called "sticking". The static friction force in the sticking state is also called the sticking force. Relying on the adhesive force between the adhered wheel and the rail adhesion point to realize the ...

Claims

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Application Information

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IPC IPC(8): B60T8/17B60T8/171B60T8/172B60T8/176B61H11/06
CPCB60T8/1705B60T8/171B60T8/172B60T8/176B61H11/06B60T13/665B60T17/228
Inventor 刘中华陈磊唐立国孙会智焦东明闫晓庚罗铁军魏润龙申云彤白春新
Owner CRRC TANGSHAN CO LTD
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