Electric locomotive, control method for front intercept and rear intercept of train pipe, and brake system

Abstract

The invention discloses a control method for front intercept and rear intercept of a train pipe of an electric locomotive. According to the control method, a relay valve 1, a front intercepter valve 2, a rear intercepter valve 3, a first intercept solenoid valve 4 and a second intercept solenoid valve 5 are included. The control method can accurately and reliably control the air charging and discharging operations of the train pipe of the locomotive. When braking is carried out or pressure is kept after braking, the front intercepter valve cuts off an air charging channel of a master wind direction train pipe; when air charging is released, the air charging channel of the master wind direction train pipe is communicated. When the rear intercepter valve is located on a reconnexion pusher locomotive, a channel of the relay valve and the train pipe is cut off, and the non-synchronous brake relieving states of the locomotive caused by unnecessary air discharging of the train pipe can be avoided. When in other working states, the channel between the relay valve and the train pipe is communicated. The embodiment of the invention further provides a brake system through which the control method can be achieved, and the electric locomotive adopting the brake system.

Description

technical field [0001] The invention relates to the electric locomotive braking system in the technical field, in particular to a control method and a braking system for an electric locomotive and its train tube front and rear blocking. Background technique [0002] In the electric locomotive braking system, the pressure change of the train pipe controls the execution of the braking and release of the whole train, and its effective control plays an important role in the braking system. [0003] At present, in the control of the train pipe in the locomotive braking system, some only adopt the method of front blocking, and some only use the method of rear blocking. [0004] Only the front blocking method is used, which may easily cause the abnormal exhaust of the relay valve of the heavy-duty supplementary machine, and the braking relief is not synchronized; when only the rear blocking method is used, some locomotive braking systems use the train pipe pressure as the rear bloc...

AI Technical Summary

Problems solved by technology

[0004] Only adopting the front blocking method may easily cause the abnormal exhaust of the relay valve of the heavy-duty supplementary machine, and the brake relief is not synchronized; when only the rear blocking method is used, some locomotive braking systems use the train pipe pressure as the rear blocking air source. It is prone to the situation that the train tube of the rear of the long train cannot be decompressed to zero, and the brake of the train is not complete

Images