Passenger and freight change-over valve
A switching valve, passenger and cargo technology, applied in fluid pressure actuators, servo motor components, mechanical equipment, etc. The complex structure of the conversion valve and other problems
Active Publication Date: 2015-03-11
MEISHAN CRRC BRAKE SCI & TECH CO LTD
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Problems solved by technology
[0002] In view of the requirement that the current 160km / h express truck must be connected to the existing passenger and freight vehicle, and its function and performance match the existing passenger and freight vehicle, the existing passenger and cargo switching valve cannot be directly applied to it, and the existing passenger and cargo switching valve Complex structure, poor integration, unable to adapt to the latest technological development needs of control valves
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[0013] Below in conjunction with accompanying drawing, the present invention is described in detail.
[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0015] Such as figure 1 and 2 As shown, a passenger-cargo switching valve includes a valve body 1 and a valve cover 2, and a switching mechanism 3, an exhaust switching valve 4, an inflation switching valve 5, a two-stage control valve 6 and an exhaust gas switching valve are arranged in the valve body 1. gas department7. The exhaust switching valve 4 includes an exhaust push rod 4a, an exhaust check valve 4b and an exhaust check valve spring 4c, the exhaust check valve 4b is connected to the u...
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The invention discloses a passenger and freight change-over valve. The passenger and freight change-over valve comprises a valve body and a valve deck, wherein a switching mechanism, an exhaust change-over valve, a charging change-over valve, a two-stage control valve and an exhaust part are arranged in the valve body; the inner cavity of the valve body are divided into five cavities A, B, C, D and E; the cavity A is connected with a control valve to brake cylinder charging channel, the cavity B is communicated with the braking cylinder, the cavity C is communicated with a train pipe, the cavity D is connected with a braking cylinder exhaust channel, and the cavity E leads to atmosphere. The passenger and freight change-over valve is connected with the control valve by use of a flange, the braking cylinder remitted exhaust channel is introduced into the change-over valve for flow control, and meanwhile, the two-stage control valve is arranged to perform flow control the braking cylinder charging channel in the control valve; besides, the switching mechanism is adopted to close or open the corresponding change-over valves to realize switching of a car between a passenger car position and a freight car position, and therefore, different time of charging, remitting and braking can be obtained to meet the requirements of application under different working conditions.
Description
technical field [0001] The invention belongs to the technical field of railway vehicles, in particular to a passenger-cargo switching valve. Background technique [0002] In view of the requirement that the current 160km / h express truck must be connected to the existing passenger and freight vehicle, and its function and performance match the existing passenger and freight vehicle, the existing passenger and cargo switching valve cannot be directly applied to it, and the existing passenger and cargo switching valve The structure is complex and the degree of integration is poor, so it cannot meet the latest technical development requirements of control valves. Contents of the invention [0003] The purpose of the present invention is to provide a passenger-cargo switching valve capable of obtaining different inflation, relief and braking times according to the operating requirements of different working conditions in view of the above existing problems. [0004] The techni...
Claims
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IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 徐海谢磊杨璨安鸿
Owner MEISHAN CRRC BRAKE SCI & TECH CO LTD