Integrated sliding piston type variable damping hydraulic cylinder

Abstract

The invention discloses an integrated sliding piston type variable damping hydraulic cylinder. The integrated sliding piston type variable damping hydraulic cylinder comprises a cylinder body, a piston rod and a piston, wherein the piston rod is slidably connected with the cylinder body, and the piston is arranged in the cylinder body. The integrated sliding piston type variable damping hydrauliccylinder further comprises a supporting bottom disc. The piston is fixedly connected with the one end of the piston rod, and the other end of the piston rod extends out of the bottom end of the cylinder block to be fixedly connected with the supporting bottom disc. A first reset spring is connected between the supporting bottom disc and the bottom end of the cylinder body. An inner chamber of thecylinder body is divided into a first chamber and a second chamber by the piston. An oil control chamber is arranged in the middle of the piston. A first oil path which communicates with the first chamber and the oil control chamber and a second oil path which communicates with the second chamber and the oil control chamber are arranged on the side wall of the piston. An adjusting mechanism for adjusting a guiding and communicating aperture of the first oil path and / or the second oil path is arranged in the oil control chamber. The integrated sliding piston type variable damping hydraulic cylinder has the advantages that the structure is simple, bidirectional damping adjustment of piston rod extension and contraction is achieved, and the speed of knee-joint swing period and the stability of a supporting period are adjusted.

Description

technical field [0001] The invention relates to the field of medical rehabilitation equipment, in particular to an integrated sliding piston variable damping hydraulic cylinder for a rehabilitation robot. Background technique [0002] The performance of a rehabilitation robot depends largely on the comfort and safety of the wearer. The comfort of the rehabilitation robot is mainly determined by the followability of the swing speed, because if the joint drive damping cannot be changed, the rehabilitation robot cannot change with the pace of the healthy limb, resulting in an asymmetrical gait and increased energy consumption of the patient. Creates a great sense of discomfort. At the same time, the stability of the rehabilitation robot during the support period is an important guarantee for walking safety. The traditional simple rehabilitation robot uses mechanical damping, and its size cannot be adjusted or automatically changed with the pace. Therefore, when the rehabilita...

AI Technical Summary

Problems solved by technology

The comfort of the rehabilitation robot is mainly determined by the followability of the swing speed, because if the joint drive damping cannot be changed, the rehabilitation robot cannot change with the pace of the healthy limb, resulting in an asymmetrical gait and increased energy consumption of the patient. cause great discomfort

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