Cylinder with double self-locking structure

Abstract

The invention discloses a cylinder with a double self-locking structure. The cylinder with the double self-locking structure comprises a cylinder body. A rear end cover is arranged at the rear end ofthe cylinder body. A front end cover is arranged at the front end of the cylinder body, and a handle is arranged at the position, located at the upper end of the front end cover, of the front end of the cylinder body. A piston rod is arranged on the front surface of the front end cover. The cylinder with the double self-locking structure enables air pressure in an accommodating cavity and a firstouter air cavity to be complementary to air pressure at the front end of an inner piston, and the internal air pressure of the cylinder with the double self-locking structure is constant. When the inner piston moves forward, the air pressure at the front end of the inner piston is pushed into the accommodating cavity and the first outer air cavity, so that a brake piston is just moved downward, abrake rod is pulled out of an embedded hole of the piston rod surface, and a limiting rod is pushed upward, so that the inner piston is locked and limited, and when the inner piston retracts, the airpressure drives the brake rod to be embedded into the embedded hole of the piston rod, and meanwhile, the limiting rod is retracted downward, the limiting and locking of the inner piston is released,and the brake rod is matched with the limiting rod, so that a double self-locking function for the cylinder is achieved.

Description

technical field [0001] The invention relates to the technical field of cylinders, in particular to a cylinder with double self-locking structures. Background technique [0002] The cylinder is generally composed of cylinder body, end cover, piston, piston rod and seals. The cylinder is a cylindrical metal part that guides the piston to perform linear reciprocating motion. It converts the pressure energy of compressed air into mechanical energy and drives The mechanism makes linear reciprocating motion, swinging and rotating motion. During the use of the cylinder, sometimes the gas system will suddenly stop gas. At this time, the piston locking device is required to lock the piston, so that the gas system suddenly stops. In this case, the piston is guaranteed to be locked. [0003] A Chinese patent discloses a self-locking cylinder (authorized announcement number CN205876844U). The patented self-locking cylinder has a compact structure and is easy to maintain. The external d...

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Problems solved by technology

[0004] However, the structure of the traditional cylinder is complicated, and the reliability of the single self-locking cylinder is not high enough. When there is an air leakage problem, the security of the cylinder is not high enough, resulting in unstable operation and affecting work efficiency. Therefore, this Those skilled in the art provide a cylinder with a double self-locking structure to solve the problems raised in the above-mentioned background technology

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