High speed train rescue conversion device

Abstract

A high speed train rescue conversion device comprises an electronic control unit, an electric pneumatic conversion valve, a relay valve, a discharge valve and an emergency electromagnetic valve. The electronic control unit collects train pipe pressure and outputs current signals used for braking, and the electric pneumatic conversion valve converts the received current signals into corresponding precontrol pressure signals and transmits the precontrol pressure signals to a braking pressure input port of the relay valve. Flow amplification of the precontrol pressure signals is carried out by the relay valve, and then the precontrol pressure signals are respectively input into an upper cavity and a lower cavity of the discharge valve. The lower cavity of the discharge valve is connected with a train pipe after blocked and cocked, and the upper cavity of the discharge valve is connected with the emergency electromagnetic valve. A supply pressure input port of the electric pneumatic conversion valve and a supply pressure input port of the relay valve are respectively connected with a pressure supply output port of a main air reservoir (MR). Air valves and the electronic control unit are combined into a whole, synchronization pressure reduction braking of a train with the high speed train rescue conversion device and other trains is achieved, and purposes that device integration and braking sensitivity are promoted, horizontal impulses of the train are reduced, bogie equipment is protected, and braking effect of the train is promoted are achieved.

Description

technical field [0001] The invention relates to a high-speed train rescue switching device, which belongs to the technical field of brake control systems in high-speed trains. Background technique [0002] At present, the CRH2 high-speed EMUs in China's high-speed trains adopt rescue mode in the event of electro-pneumatic through-brake failure. The driver controls the mechanical brake valve to decompress or boost the pressure of the train pipe (BP pipe) to realize the Group braking or relief. If the mechanical brake valve of the faulty car fails to work, it can still be connected to the faulty car through the train pipe of the rescue locomotive or a functionally complete EMU. , to control its own air distribution valve, so that the main air duct can fill or exhaust the brake cylinder to achieve braking or release operation. This device can rescue the vehicle or other vehicles with BP pipes, but its performance, response time and accuracy depend on its own air circuit and m...

AI Technical Summary

Problems solved by technology

This device adopts an electronic control unit, and the pressure sensor is integrated in the device. It has high integration, quick response, and has fault detection and storage functions. However, it can only be used to rescue the vehicle itself, and cannot rescue other vehicles.

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