Special bevel valve with automatically opened and closed cylinder for railway vehicles

Abstract

The invention relates to pneumatic control valve, in particular to a special bevel valve with an automatically opened and closed cylinder for railway vehicles. The special bevel valve comprises a valve body (1), a valve body straight channel (2), a piston cylinder body (7) and a folding handle (8), and is characterized in that the piston cylinder body (7) is arranged at the front end of the valve body, the piston cylinder body and the valve body are integrally fixed, one end of the piston cylinder body is sealed via a piston cylinder seal (4), a spring (6) is disposed between a piston push rod (5) and a side wall of the valve body (1), a through hole is arranged on the side wall of the valve body and matches with the front end of the piston push rod (5), a groove is arranged on one side of a valve spool (9) and matches with the front end of the piston push rod (5), and the piston cylinder body (7) is communicated with the valve body straight channel (2) via a piston cylinder air inlet (3). In the technical scheme, the special bevel valve with the automatically opened and closed cylinder for railway vehicles has the advantages of safety, reliability, convenience in manufacture, capability of saving cost, speediness in installation and novel structure.

Description

technical field [0001] The invention relates to an air control valve, specifically a special knuckle valve for railway vehicles with cylinder automatic opening and closing. Background technique [0002] During the driving process of the vehicle, the braking system of the vehicle plays a vital role. Among them, the knuckle valve is a key part and the biggest hidden danger of accidents. It is easy to open or close by mistake, resulting in accidents. The China Patent Office authorized and announced the patent No. 200720087543.7 on January 7, 2009. This patent relates to a wind pressure self-locking and self-unlocking angled door for railway vehicles. The technical solution of this patent basically realizes the automatic angle valve. The lock is self-unlocking, but the technical solution has the following defects: [0003] 1) An additional cylinder drives the lock plug to lock the valve core. This method is inconvenient to operate, and the cylinder is installed obliquely, so th...

AI Technical Summary

Problems solved by technology

[0003] 1) An additional cylinder drives the lock plug to lock the valve core. This method is inconvenient to operate, and the cylinder is installed obliquely, so that the lock plug cannot effectively control the valve core and is easy to get stuck;

[0004] 2) The cylinder is attached, and it is easy to fall off or be knocked off by non-operators;

[0005] 3) The cylinder adopts the rear intake method, which cannot effectively realize the valve linkage;

[0006] 4) The cylinder adopts the rear air intake method, which affects the operating space of the valve operating handle and affects the operation safety

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