Parking brake control system, control method and vehicle

Abstract

The invention belongs to the field of vehicle parking brake control, and provides a parking brake control system, a control method and a vehicle. The parking brake control system comprises a main airpipe, a brake pipe, a first air channel, a second air channel, a third air channel, a cutout cock and a parking electromagnetic valve. The cutout cock and the parking electromagnetic valve are connected in parallel to form a parallel branch air path, the parallel branch air path is connected to the first air path in series, and the first air path is connected with the main air pipe; the second gascircuit is connected with the brake pipe; the third gas circuit is connected with the parking brake clamp; and the third air path can be switched to communicate with the first air path and the secondair path so as to realize parking brake control under the condition of normal operation of the vehicle or vehicle rescue. The parking brake control system is realized purely based on a gas circuit principle, no electric signal control is needed when the vehicle breaks down and is rescued, and the availability and reliability of parking braking of the vehicle under various working conditions are guaranteed.

Description

technical field [0001] The invention belongs to the field of vehicle parking brake control, in particular to a parking brake control system, a control method and a vehicle. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] At present, both rail vehicles and locomotives are equipped with parking brakes. The application and release of parking brakes are controlled by solenoid valves. If the solenoid valve fails, the pneumatic centralized control of parking brakes cannot be quickly released, and only manual mechanical isolation can be performed. At the same time, when an urban rail vehicle is rescued by a locomotive or the same type of urban rail vehicle, the method of isolating all the air brakes is currently used. After the air brake is isolated, the rescued vehicle completely loses its braking force. During the rescue process, only the rescu...

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Problems solved by technology

[0003] At present, both rail vehicles and locomotives are equipped with parking brakes. The application and release of parking brakes are controlled by solenoid valves. If the solenoid valve fails, the pneumatic centralized control of parking brakes cannot be quickly relieved, and only manual mechanical isolation can be performed.

At the same time, when an urban rail vehicle is rescued by a locomotive or the same type of urban rail vehicle, the method of isolating all the air brakes is currently used. After the air brake is isolated, the rescued vehicle completely loses its braking force. During the rescue process, only the rescue vehicle can Apply the brakes. In an emergency or when the coupling is uncoupled, the rescued vehicle cannot apply the brakes to stop, which affects the safety of train operation.

[0004] In summary, the inventor found that the current parking brake control system cannot quickly release the parking brake after the parking brake solenoid valve fails, and the rescue process cannot be rescued for a long time due to the influence of the power supply system. It is impossible to control the parking brake to stop, which reduces the safety of train operation and rescue efficiency

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