Novel hydraulic oil cylinder

Abstract

The invention discloses a novel hydraulic oil cylinder, which comprises a cylinder body, a front end cover, a rear end cover, a piston and a piston rod, wherein the front end of the piston rod is step-shaped; the end surface of the front end of the piston rod is provided with a threaded hole; the piston is sleeved on the front end of the piston rod, and is fixed with the threaded hole by virtue of a matched bolt; the rear end cover is fixedly provided with an exhaust valve; the exhaust valve is provided with a channel communicated with the cylinder body; the exhaust valve comprises a valve, a spring, a valve casing and a valve body; the valve body is provided with an inner hole; the valve casing is embedded into one end of the inner hole of the valve body; one end of a valve rod is provided with a spring seat, and is connected with the valve by virtue of the spring seat; the spring is sheathed on the valve rod and the spring seat and is arranged in the valve casing; the other end of the valve rod penetrates through the valve casing and is provided with a limiting block. In the gas release process of the hydraulic oil cylinder, only one person is needed for the whole gas release process, labor force is reduced, simple, convenient, reliable and fast effects are realized, and gas release is clean and thorough.

Description

technical field [0001] The invention relates to a novel hydraulic oil cylinder. Background technique [0002] The hydraulic cylinder is the actuator in the hydraulic system. It is generally composed of a cylinder body, a front end cover, a rear end cover, a piston and a piston rod. Since the compression ratio of the liquid is very small, when one of the oil holes enters the oil, the piston will be pushed The other oil hole is made to discharge oil, and the piston drives the piston rod to extend and retract, and vice versa. In hydraulic transmission, its actuator is generally a hydraulic cylinder or a hydraulic motor, which converts hydraulic energy into mechanical energy. When it is necessary to convert hydraulic energy into mechanical swing or torsional power, it is often necessary to use a hydraulic cylinder through a corresponding mechanical structure. . In the prior art, the connection between the piston and the piston rod of the oil cylinder generally adopts ferrule-...

AI Technical Summary

Problems solved by technology

In the prior art, the connection between the piston and the piston rod of the oil cylinder generally adopts ferrule-type connection, which has many defects. During the use of the oil cylinder, the ferrule is easily broken due to excessive fatigue, which affects the performance of the oil cylinder. The overall working life; the ferrule-type connection is used, the connection is not reliable, the ferrule cannot meet the requirements of large tension, and fatigue and other strains are prone to occur during the work process; the ferrule-type connection is used, and its sealing performance is poor; the hydraulic cylinder is at the beginning When connecting to the oil circuit, generally there is air in the cylinder, directly connected to the oil pipe, the air in the cylinder will be mixed into the hydraulic oil, which will affect the working performance of the hydraulic system

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