Locomotive Parking Brake Control Method

Abstract

The invention discloses a locomotive parking brake control system and a control method thereof. Parking brake application and release switching signals are not only controlled through a hard wire circuit while a locomotive master control microcomputer serves as an instruction output end to output parking brake application / release instructions, so that intelligent level of a locomotive is raised, and under the condition of freeness of manual operations, parking brake can be automatically applied and released under corresponding conditions; a distance sensor is added between a parking brake shoe and a wheel set to serve as a supplement of a parking brake air cylinder pressure switch, and accordingly reliability of the locomotive is improved. Under control of the locomotive master control microcomputer, no matter in which state of the parking brake during locomotive loading, parking brake release signals are outputted, and loading is not carried out until both the brake air cylinder pressure switch and the distance sensor show a release state. When the speed of the locomotive is larger than 0km / h, application of a parking brake function is prohibited. Therefore, parking brake control logics are perfected, and accident occurrence probability is decreased.

Description

technical field [0001] The invention relates to the field of locomotive brake control, in particular to a locomotive parking brake control method. Background technique [0002] The parking brake of the existing locomotive is only configured as a simple function, and the application and release of the parking brake are completely operated manually by the driver. Whether the application or release of the parking brake is really successful is judged and displayed only by the signal of the pressure switch of the parking brake air cylinder. When the pressure switch or the display link breaks down, the driver is easy to make a wrong judgment on the application or release state of the parking brake, resulting in some unexpected mistakes. [0003] In the prior art, the parking brake application solenoid valve and the parking brake relief solenoid valve are controlled by switches to control the pressure of the locomotive parking brake air cylinder. When the air cylinder pressure re...

AI Technical Summary

Problems solved by technology

[0005] 1) The degree of intelligence is not high, and the application and release of the parking brake need to be operated manually by a separate switch

[0006] 2) The function is simple and the judgment condition is single. If the pressure switch fails, it is easy to be ignored and cause a driving accident

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