A control method for front and rear blocking of electric locomotive train tubes

Abstract

The invention discloses a front and rear blocking control method for electric locomotive train pipes, which comprises a relay valve 1, a front blocking valve 2, a rear blocking valve 3, a first blocking electromagnetic valve 4 and a second blocking electromagnetic valve 5. This control method can accurately and reliably control the air filling and exhausting action of the locomotive train tube. When braking or maintaining pressure after braking, the front shut-off valve cuts off the air charging passage of the total air direction train pipe; The rear shut-off valve cuts off the passage between the relay valve and the train pipe when reconnecting and repairing the machine, so as to avoid the out-of-synchronization of the locomotive braking relief state caused by the unnecessary exhaust of the train pipe; in other working conditions, the relay is turned on The passage of valves and train pipes. The embodiment of the present invention also provides a braking system capable of realizing the above-mentioned control method, and an electric locomotive using the above-mentioned braking system.

Description

technical field [0001] The invention relates to the technical field of an electric locomotive braking system, in particular to a control method for blocking front and rear tubes of an electric locomotive. 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 blocking air source. It is easy to ...

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

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