Self-pressure-relief high-speed hydraulic oil cylinder with adjustable buffering function

Abstract

The self-pressure-relief high-speed hydraulic oil cylinder with the adjustable buffering function comprises a hydraulic cylinder body and a piston rod, the piston rod is movably installed on the inner side of the hydraulic cylinder body, one end of the hydraulic cylinder body is provided with an oil injection cavity used in cooperation with the piston rod, and a piston head is fixedly installed on the outer surface of one end of the piston rod; two sets of buffering pieces used for buffering the piston rod are movably installed on the inner side of the upper portion of the hydraulic cylinder, the hydraulic cylinder and the buffering pieces are in butt joint and fixed through butt joint rings, and the outer surface of the side edge of the piston rod is sleeved with a buffering sleeve. The pressure relief grooves in the outer sleeve can be opened through movement of the rubber plug, meanwhile, the pressure relief grooves are divided into a large group, a medium group and a small group, the rubber plug is matched with the first spring to open the corresponding pressure relief grooves according to the pressure, and the pressure relief grooves are matched with the cavity to complete pressure relief buffering operation on the piston rod. The self-pressure-relief high-speed hydraulic oil cylinder has the adjustable buffering function, and the using flexibility of the self-pressure-relief high-speed hydraulic oil cylinder is improved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic oil cylinders, and more particularly relates to a self-releasing high-speed hydraulic oil cylinder with an adjustable buffer function. Background technique [0002] Hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). , the movement is stable, so it is widely used in various mechanical hydraulic systems. [0003] The patent document of the patent number CN104696308A discloses a small high-speed hydraulic oil cylinder, which includes an oil cylinder body and an oil cylinder cover connected to the oil cylinder body. There is a second oil hole, the first oil hole is communicated with the top of the cylinder tube, and the second oil hole is communicated with the bottom of the cylinder tube; a piston is coaxially sleeved in the cylinder tube, the piston includes an upper end and a lower end, th...

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Problems solved by technology

[0004] There are certain deficiencies in the use of the above-mentioned device. The traditional self-relieving high-speed hydraulic cylinder does not have an adjustable buffer, so that the traditional self-relieving high-speed hydraulic cylinder cannot make corresponding adjustments according to pressure changes, making it easy to damage the cylinder when the pressure is too high. body, which reduces the use effect of the self-relieving high-speed hydraulic cylinder; secondly, the traditional self-relieving high-speed hydraulic cylinder does not have a self-cleaning structure. The rod body structure is easily contaminated with oil, which reduces the stability of the rod body when it is telescopic, and requires the user to clean it regularly; at the same time, the traditional self-relieving high-speed hydraulic cylinder does not have a rod body protection structure. The piston end of the rod body is easy to collide with the cylinder body, so that the piston end is prone to fall off, which reduces the safety of its use and brings certain adverse effects to the user

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