Oil cylinder

Abstract

The invention belongs to the technical field of oil cylinders, and discloses an oil cylinder with an adjustable stroke distance. The oil cylinder comprises a cylinder body, a piston, an extending stroke adjusting assembly and a retracting stroke adjusting assembly; the piston is located in the cylinder body and divides the interior of the cylinder body into a first control cavity and a second control cavity which are not in communication with each other, the first control cavity is in communication with a port A, the second control cavity is in communication with a port B, and the piston reciprocates under the action of medium pressure between the first control cavity and the second control cavity; a piston rod is arranged at one end of the piston and penetrates through the first control cavity to extend out of the cylinder body; the extending stroke adjusting assembly is located between the piston and the cylinder body at the terminal of the first control cavity and used for controlling the extending stroke of the piston; and the retracting stroke adjusting assembly is located between the piston and the cylinder body at the terminal of the second control cavity and used for controlling the retracting stroke of the piston. According to the oil cylinder, the extending stroke distance and the retracting stroke distance of the piston can be adjusted, and the control effect on the stroke distance of the oil cylinder is improved.

Description

technical field [0001] The invention belongs to the technical field of oil cylinders, and in particular relates to an oil cylinder with adjustable stroke distance. Background technique [0002] Hydraulic cylinders are linear motion actuators commonly used in hydraulic systems. According to different structural methods, they are mainly divided into piston type, plunger type, and telescopic type. Because the oil cylinder has simple structure, reliable operation and wide application, and the oil cylinder can be directly connected with the working mechanism. [0003] The stroke and installation distance of the oil cylinder are one of the important parameters in the design work of the whole mechanism. However, in the actual use process, the host customer sometimes needs the stroke and installation distance of the oil cylinder to be adjustable, and the transmission of the mechanism can be realized within a certain range. Even, some main engine working mechanisms also need to dyn...

AI Technical Summary

Problems solved by technology

[0004] However, the stroke and installation distance of conventional ordinary oil cylinders are fixed and cannot be adjusted. Although there are some oil cylinders that can adjust the stroke in the prior art, most of them need to fix the positioner and tightening on the piston rod, which will affect the piston rod. The rod produces certain damage, which is not conducive to the oil seal. It can only control the stroke of the cylinder when it is stretched out the longest and then retracted. There are limitations in use.

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