Automatic interruption device for emergent braking of relay valve of locomotive brake

Abstract

The invention relates to an automatic interruption device for emergent braking of a relay valve of a locomotive brake. The automatic interruption device comprises a brake pipe, a train pipe and a relay valve of a blast pipe, air pressure of the brake pipe can interrupt aeration of the blast pipe to the train pipe, a pressure switch is installed on the train pipe, a makeshift valve is arranged between the brake pipe and the relay valve, the output end of the makeshift valve is connected with a relay valve port, one input end of the makeshift valve is connected with the brake pipe, and the other input end of the makeshift valve is connected with the blast pipe through an electromagnetic valve. A set of simple parts are matched with a locomotive to control a computer to enable the JZ-7 type brake to achieve automatic interruption effect under the condition that a non-brake valve triggers emergent braking. The automatic interruption device improves functions of the brake, improves brake safety, simplifies driver operation, avoids long-time air hitting of an air compressor and saves energy.

Description

technical field [0001] The invention relates to an emergency brake automatic blocking device for a relay valve of a locomotive brake, belonging to the technical field of railway locomotives. Background technique [0002] When the brake valve of the JZ-7 brake for railway locomotive triggers emergency braking, the train pipe pressure is discharged to the atmosphere, making the brake produce emergency braking, and at the same time, it will fill the 8# pipe with pressure to close the relay valve The path from the main air pipe to the train pipe, so that the pressure of the train pipe can be completely zeroed out and the total air pressure will not be lost through the train pipe (see attached figure 1 ). However, under other conditions, such as when the driver pulls the emergency brake valve or breaks the hook, the train pipe is directly discharged to the atmosphere through the external passage, but at this time there is no pressure in the 8# pipe, which cannot block the passag...

AI Technical Summary

Problems solved by technology

However, under other conditions, such as when the driver pulls the emergency brake valve or breaks the hook, the train pipe is directly discharged to the atmosphere through the external passage, but at this time there is no pressure in the 8# pipe, which cannot block the passage from the main air pipe to the train pipe.

Due to the supplementary air of the main air pipe, the pressure of the train pipe cannot be reduced to zero, and there is a certain residual pressure, which cannot guarantee the real emergency braking effect

In addition, the total air pressure is lost through the exhaust port of the train pipe, the total air pressure drops rapidly, and the air compressor starts to blow air for a long time, which consumes a lot of locomotive energy.

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