A command conversion device for returning and rescuing EMUs

Abstract

The invention discloses an EMU loopback rescue command conversion device, comprising an electronic control unit, the input end of the electronic control unit is connected with a pressure sensor, the output end of the electronic control unit is connected with an electro-pneumatic conversion valve, the The electro-pneumatic conversion valves are respectively connected with the main air pipe and the relay valve, and the relay valves are respectively connected with the mode switching valve and the main air pipe, and the mode switching valves are respectively connected with the train pipe and the main air pipe. The emergency exhaust valve is connected with the main air pipe and the train pipe respectively, the train pipe is connected with an air cylinder, and the air cylinder is connected with a pressure sensor, and the pressure sensor is used for collecting the train pipe pressure, and the pressure The signal is input to the electronic control unit. The invention realizes the mutual rescue function between the single-tube braking train group and the double-tube braking train group, and has simple device interface and high integration.

Description

technical field [0001] The invention relates to a braking control system in rail transit, in particular to a command conversion device for returning and rescuing an EMU. Background technique [0002] There are two different air brake control methods for domestic EMUs: one is a single-pipe brake system, that is, a straight-through electro-pneumatic brake control system in which the air brake is controlled by the air supply of a single main air pipe; Regulatory braking system, that is, in addition to the straight-through electropneumatic braking control system with a single main air duct air supply control, it can also realize the automatic air braking control system through the train tube to achieve pure air braking. [0003] In the case of no-fire return, failure rescue, etc., the EMU needs to be returned or rescued by the locomotive or other EMUs (hereinafter referred to as "rescued"); referred to as rescue). [0004] The patent CN102975738B realizes the mutual rescue of ...

AI Technical Summary

Problems solved by technology

[0005] (1) The functions of rescue and rescued are realized through the cut-off plug in the operating device. Since the device is installed under the vehicle, it will be inconvenient to operate when the vehicle on the line is rescued.

[0006] (2) When being rescued, when the locomotive or rescue EMU triggers an emergency, the EMU cannot apply emergency braking synchronously; when the EMU triggers an emergency, the locomotive or rescue EMU cannot simultaneously apply emergency braking

[0007] (3) Rescue: When the rescued EMU triggers an emergency, the EMU cannot trigger the emergency brake synchronously

[0008] (4) The emergency exhaust valve is controlled by the electronic control unit, and the control of the emergency exhaust valve cannot be realized when the electronic control unit fails

[0009] (5) Emergency braking cannot be triggered when the train pipe ruptures and other working conditions cannot be triggered

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