Supplementary machine control method for electric locomotive brake

Abstract

The invention discloses a trail control method for an electric locomotive brake. According to the method, when a double-heading valve is in a trail state, pressure air entering from a blast main is adopted to control communication of an average pipe and a working pipe and control communication of the blast main and a double-heading signal pipe; the double-heading signal pipe enables passed pressure air to act on an intercepting valve, and the intercepting valve is controlled to be in an open state and intercept a passage between a first train pipe and a second train pipe and a passage between the first train pipe and a relay valve; and when an equalizing reservoir discharges air, pressure air of the first train pipe cannot be discharged through the relay valve. According to the trail control method for the electric locomotive brake, under the condition that the electric locomotive brake in the trail state loses power, the pressure air of the first train pipe cannot be discharged through the relay valve when the equalizing reservoir discharges air, so that accidental emergency braking of the brake is effectively prevented, and the safety of locomotive operation is improved.

Description

technical field [0001] The invention relates to the technical field of railway locomotive brakes, in particular to a backup control method for electric locomotive brakes. Background technique [0002] At present, in order to greatly increase the running speed and carrying weight of the train, the method of reconnecting the locomotive brakes through the reconnection valve is usually used to realize the double or multiple reconnection of the locomotive. In other words, this method, that is, when When the train is in double or multi-engine reconnection state, by controlling the reconnection valve, the crew only needs to operate the brake of the lead locomotive to ensure that the braking and relief functions of the reconnection locomotive and the lead locomotive are coordinated. [0003] Among them, the locomotive brake usually includes: shut-off valve, relay valve, reconnection valve and the average pipe, main air pipe, action pipe and brake cylinder connected to the air circui...

AI Technical Summary

Problems solved by technology

However, when the electric locomotive brake is in the supplementary state, once the power is lost, the electropneumatic valve cannot be energized, resulting in the failure of the electric control command used to control the action of the electropneumatic valve. The air path of the train is conducted and the air in the train pipe is discharged from the relay valve. At this time, it is easy to cause emergency braking of the brake and reduce the safety of locomotive operation.

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