Manual release device for foundation brake of rail transit vehicle

Abstract

The invention provides a foundation brake device for rail transit, wherein a parking cylinder of a manual release device is connected on a brake cylinder, the parking cylinder is connected with two release guy cables, and the two release guy cables are respectively mounted on the two sides of a vehicle; and by pulling any one release guy cable, a ratchet wheel seat of the manual release device can be separated from a locking ratchet tongue so as to release the brake of a parking brake unit of the vehicle which is not in a main air parking brake state. According to the embodiment disclosed by the invention, operation staff can completely release all the parking brake of the vehicle on only one side of the vehicle; and furthermore, according to the embodiment disclosed by the invention, the convenience in operation can be improved during daily use, the safety of the vehicle can be ensured under emergencies and the rescue efficiency can be improved.

Description

technical field [0001] The device relates to the field of braking of rail transit vehicles, in particular to a manual release device for foundation braking of rail transit vehicles. Background technique [0002] Common forms of foundation braking devices for rail vehicles include: a tread brake unit that obtains braking force by pressing the tread and a brake caliper unit that obtains braking force by clamping the brake disc. The application and release of its service brake is usually realized by using compressed air: the service brake is applied when the compressed air is charged; the service brake is released when the compressed air is discharged. In order to ensure the parking requirements of the vehicle under windless conditions (such as parking in the garage at night, the vehicle air compressor does not work, and the vehicle has no wind pressure), the foundation braking device is usually designed with a parking brake mechanism, which usually contains a spring The energ...

AI Technical Summary

Problems solved by technology

[0004] Since the cable can only be operated from one side of the vehicle, the manual release device will release the parking brake, and the foundation brake device with parking is arranged on both sides of the vehicle, so to release all the parking brakes of the vehicle, it must be The two sides of the vehicle are operated separately. Such a manual release device is not only inconvenient to operate in daily use, but also cannot quickly release the brakes in an emergency, which may affect the safety of rail traffic.

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