Parking brake control unit with integrated remote relieving function

Abstract

The invention discloses a parking brake control unit with integrated remote relieving function. The parking brake control unit comprises a first cock, a second cock, a third cock and a pulse solenoid valve, wherein the first cock is arranged on a pipeline and used for communicating with an air main; the second cock is used for communicating with a brake pipe; the third cock is used for communicating with an average pipe; the pulse solenoid valve is arranged on the pipeline and used for communicating with a parking brake cylinder; the first cock and the second cock communicate with the pulse solenoid valve; the pulse solenoid valve comprises a release piston end; the second cock also communicates with a piston end of the pulse solenoid valve; a third check valve is arranged between the second cock and the piston end; and the direction of the third check valve points to the piston end from the second cock.

Description

technical field [0001] The present application relates to a parking brake control unit with integrated remote mitigation. Background technique [0002] When the vehicle is in the no-fire loopback mode, it usually needs to be dragged by other vehicles. At this time, the operator needs to trigger the parking relief on the console. Apply the button to control the pulse solenoid valve to be in the parking relief state. If the operator misoperates, the pulse is not ensured. If the solenoid valve is in the required setting state, there is no pressure input in the parking brake pipe, and its relief cannot be guaranteed, so that the vehicle cannot be returned safely without fire. In the prior art, another situation that usually occurs is that the pulse solenoid valve is faulty or the pulse solenoid valve is in a state of no power supply, and the operator cannot control the state of the pulse solenoid valve with electrical signals, so that the vehicle cannot perform fire-free return....

AI Technical Summary

Problems solved by technology

[0002] When the vehicle is in the no-fire loopback mode, it usually needs other vehicles to drag it. At this time, the operator needs to trigger the parking relief on the console. Apply the button to control the pulse solenoid valve to be in the parking relief state. If the operator misoperates, the pulse is not ensured. If the solenoid valve is in the required setting state, there is no pressure input in the parking brake pipe, and its relief cannot be guaranteed, so that the vehicle cannot be returned safely without fire

In the prior art, another situation that usually occurs is that the pulse solenoid valve is faulty or the pulse solenoid valve is in a state of no power supply, and the operator cannot use electrical signals to control the state of the pulse solenoid valve, so that the vehicle cannot perform fire-free return.

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