Empty and heavy vehicle adjustment valve for vehicle air braking system

Abstract

The invention provides an empty and heavy vehicle adjustment valve for a vehicle air braking system. The empty and heavy vehicle adjustment valve comprises a valve body, a sensing part and a first switching part, wherein the valve body is provided with a cavity, a first passageway for communicating the cavity with a control valve, a second passageway for communicating the cavity with a pressure reduction air cylinder and a third passageway for communicating the cavity with a braking cylinder; the sensing part is mounted on the valve body and is provided with a sensing end and a control end; the control end is provided with different control end positions according to vehicle loading conditions sensed by the sensing end; the first switching part is arranged in the cavity and can be switched between a heavy load working position and an empty load working position according to the difference of the control end positions of the sensing part; at the heavy load working position, the control valve is communicated with the braking cylinder and is not communicated with the pressure reduction air cylinder; at the empty load working position, the control valve can be communicated with both the braking cylinder and the pressure reduction air cylinder. According to the empty and heavy vehicle adjustment valve, the problems of complicated connection pipelines among all components of the empty and heavy vehicle adjustment valve and large occupation space in the prior art can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of railway freight car air brake systems, in particular to an empty-load car regulating valve for the vehicle air brake system. Background technique [0002] At present, with the development of railway transportation technology, the loading capacity of railway freight cars is increasing day by day, which leads to a large difference between the total weight of railway freight cars when they are fully loaded and the dead weight when they are empty. When the air brake operation is performed on railway wagons, the braking force that can ensure that a fully loaded vehicle (ie a heavy vehicle) stops within a specified distance at a certain speed is too large for an unloaded vehicle (ie an empty vehicle). This may lead to the phenomenon that the wheels are "locked" due to excessive braking force when braking with an empty vehicle, that is, the wheels change from rolling to sliding. Above-mentioned situation is ver...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide an empty-load vehicle adjusting valve for vehicle air brake system, so as to solve the problems of complicated connecting pipelines and large occupied space among the components of the empty-load vehicle adjusting device in the prior art

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