Holding braking control method, braking system and vehicle in emergency traction mode

A technology of maintaining braking and emergency traction, which is applied in the field of rail transit, which can solve the problems of short-term brake operation and inability to move trains, and achieve the effect of ensuring train parking, ensuring effectiveness, and avoiding rolling problems

Active Publication Date: 2022-05-13
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a holding brake control method, a braking system and a vehicle in an emergency traction mode to solve the problem that the train cannot be moved under the condition of a partial failure of the train traction system, and to ensure that the train Safe parking, avoiding the problem of short-term brake operation

Method used

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  • Holding braking control method, braking system and vehicle in emergency traction mode

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Embodiment Construction

[0025] In Embodiment 1 of the present invention, the process flow of the holding brake method is as follows figure 1 shown. In the emergency traction mode, when the brake system receives a traction command, the mode of holding brake release is determined according to the size of the ramp (set the ramp detection device to detect the size of the ramp).

[0026] The holding brake release control logic in the emergency traction mode of the train is divided into two different designs for the small ramp and the large ramp.

[0027] 1. The holding brake is relieved when starting on a small slope

[0028] When the train is in the emergency traction mode, when the braking system receives the traction command, it judges the slope condition of the line at this time. If the train is on a small slope (such as: α≤5‰), delay for a period of time t1 (such as: 1~2s) and then automatically release the holding brake. Since the sliding force to be overcome on a small ramp is relatively small, ...

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Abstract

The invention discloses a holding braking control method, a braking system and a vehicle in an emergency traction mode. When a train is in the emergency traction mode, when the braking system receives a traction command, it is judged whether the slope of the line is not greater than a set threshold ; If yes, release the holding brake after the delay time t1; otherwise, judge whether the train speed is greater than 0, if so, release the holding brake; otherwise, delay the time t2, release the holding brake. Compared with using the speed criterion alone, the present invention can solve the problem that the train cannot be moved under the condition of partial failure of the traction system of the train; compared with using a single delay criterion alone, the present invention uses the combined effect of longer delay and speed criterion, Even if the train is parked more safely, the problem of short-term brake operation can be avoided.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a holding braking control method, a braking system and a vehicle in an emergency traction mode. Background technique [0002] At present, the holding brake relief of urban rail vehicles in emergency traction mode is usually implemented in the following two ways: [0003] 1) Method 1: Speed ​​criterion [0004] In the traction mode, when the brake system detects that the train speed is greater than zero, it will automatically release and hold the brake. Since the speed is greater than zero, it means that the traction force of the train is greater than the sum of the holding braking force and the slope sliding force. Therefore, the advantage of this criterion is that it can ensure the safety of the train’s parking and there will be no phenomenon of the train slipping backward; but its disadvantage is When a part of the traction system fails, the traction force cannot overcome t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/17B60T17/18
CPCB60T8/1705B60T17/18
Inventor 段继超王伟波方长征王娴孙宪红毋凡
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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