Piston valve for railway vehicle braking system
A technology for braking systems and rail vehicles, which is applied in the field of piston valves for rail vehicle braking systems, can solve problems such as large friction in motion, unreliable sealing, complex structure, etc., and achieves low friction resistance, convenient replacement of components, and smooth movement. Effect
Pending Publication Date: 2021-04-02
XINXIANG AVIATION IND GROUP
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Problems solved by technology
However, the traditional air-operated reversing valve has the disadvantages of complex structure, large volume, unreliable sealing, and large frictional force.
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[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0018] see Figure 1-4 , the present invention provides a technical solution: a piston valve for a rail vehicle braking system. The technical problem to be solved by the present invention is to overcome the existing defects and provide a piston valve for a rail vehicle braking system. The product is a plate type The connection structure has the advantages of simple structure, convenient replacement of components, low frictional resist...
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A disclosed piston valve for a railway vehicle braking system comprises a left valve deck, a shell, a right valve deck, a left piston assembly, a right piston assembly and a valve sleeve, the left valve deck and the right valve deck are arranged in the left side and the right side of the shell respectively, and the left piston assembly, the right piston assembly and the valve sleeve are all arranged in the shell. A hexagonal blind hole for installation is formed in the end face of the left side of the left piston assembly, a through hole for tightening and fixing is formed in a step shaft of the left piston assembly, a sealing ring installation groove is formed in the cylindrical face of the left side of the left piston assembly, a second sealing ring is arranged in the sealing ring installation groove, and a threaded hole is formed in the end face of the right side of the left piston assembly. The piston valve for the railway vehicle braking system overcomes the defects that a traditional pneumatic control reversing valve is complex in structure, large in size, unreliable in sealing, large in kinetic friction force and the like, and has the main advantages of being of a plate typeconnecting structure, simple in structure, convenient to replace elements, small in friction resistance, convenient to assemble, disassemble and maintain and the like.
Description
technical field [0001] The invention relates to the technical field of rail vehicle braking, in particular to a piston valve for a rail vehicle braking system. Background technique [0002] Rail vehicles refer to a type of transportation that requires operating vehicles to travel on specific tracks. The most typical rail transportation is a railway system composed of traditional trains and standard railways. With the diversified development of trains and railway technologies, rail transit has shown more and more types, not only in long-distance land transportation, but also widely used in short- and medium-distance urban public transportation. [0003] The rail vehicle braking system needs to be equipped with a piston valve that can apply control pressure through a separate air control interface to switch the product state and perform a large amount of air charging and exhausting. The traditional air-controlled reversing valve has the disadvantages of complex structure, lar...
Claims
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IPC IPC(8): B61H11/06B61H11/10B60T15/02
CPCB61H11/06B61H11/10B60T15/021
Inventor 贾方迪王献岭史新芳王玉涛刘建辉侯松峰
Owner XINXIANG AVIATION IND GROUP