Motor train unit brake control unit

Abstract

The invention aims to provide a brake control unit applicable to a motor train unit with the speed grade of 250 kilometers and below. The brake control unit comprises a PBCU (pneumatic brake control unit) and an EBCU (electronic brake control unit) which are integrated in the same brake control cabinet. The PBCU mainly comprises a filling solenoid valve, an exhaust solenoid valve, an emergency valve, an empty and load valve, a relay valve and a pressure reducing valve, the relay valve is a double-precontrol relay valve, namely, a common brake precontrol pressure port and an emergency brake precontrol pressure port include two independent passages, redundancy of a system is increased, a brake cylinder pressure output passage is provided with a forced release device and a remote release valve, a switch for controlling the remote release valve is arranged on a train, and the pressure of a brake cylinder can be remotely released by operating the switch. System operating complexity is reduced, and maintainability of the system is improved.

Description

technical field [0001] The invention relates to a rail vehicle braking control system, in particular to a braking control unit for an EMU. Background technique [0002] The train brake system is also called the train brake device. Its main function is to reduce the speed of the train during operation, stop it or run at a constant speed by means of friction or other methods, or prevent it from slipping during its stay. The braking system of the EMU mainly adopts the microcomputer-controlled direct electro-pneumatic braking system, which mainly includes the braking control system, the basic braking device, the air source system, etc., among which the braking control system is mainly composed of the braking control unit, the pneumatic control module and the anti-skid control system. components. [0003] The brake control unit is the core component of the brake control system of the EMU. It is installed on each car of the EMU. The solenoid valve or emergency valve is converted...

AI Technical Summary

Problems solved by technology

Chinese Patent No. CN 103010251 discloses a brake control unit for high-speed EMUs and urban rail transit vehicles, including air-to-electricity conversion valves, emergency valves, empty-load vehicle valves and relay valves, and the valves are connected by pipelines. It has high interchangeability, and can realize the test of air spring pressure, brake cylinder pressure, pre-control pressure and air storage cylinder pressure, but it has the following disadvantages: (1) The above-mentioned brake control unit only has pneumatic brake The PBCU module of the control unit and the electronic brake control unit EBCU are scattered and installed in other parts, and the integration level is not high, so they need to be operated and maintained separately; The control pressure is merged into one control channel at the emergency valve, and when the emergency valve fails, all brake control pressure is lost, and the redundancy of the brake is lacking.

Moreover, in the existing brake control unit, when the pressure of the brake cylinder cannot be relieved due to relay valve failure or other reasons, most of them need to be manually operated to relieve the brake cylinder, which is inconvenient to operate

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