Rotation type self-locking hydraulic oil cylinder

Abstract

The invention belongs to the technical field of hydraulic pressure, and particularly discloses a rotation type self-locking hydraulic oil cylinder. The rotation type self-locking hydraulic oil cylinder comprises an energy transduction part, a locking part and a rotation applying part which are successively connected in a sealing mode, wherein a first piston, a first piston rod, a first cylinder barrel and a first oil port are arranged inside the energy transduction part; a locking device, a second piston rod, a second cylinder barrel, a second oil port and a third oil port are arranged in the locking part; a rotating device, a third piston rod and a third cylinder barrel are arranged in the rotation applying part. The piston rods are driven to stretch out of the oil cylinder through the oil feed of the first oil port, the rotation applying device forces the piston rods to rotate in the moving process, at the end point of the stroke of the oil cylinder, the locking device is driven to lock the piston rods through the oil feed of the third oil port, and the locking device is driven for unlocking operation through the oil feed of the second oil port. The rotation type self-locking hydraulic oil cylinder is simple in structure, easy to process and low in cost.

Description

technical field [0001] The invention relates to a hydraulic device, in particular to a rotary self-locking hydraulic oil cylinder which can be rotated during the telescoping process and automatically locked at the end of the stroke to maintain its stroke state, belonging to the field of hydraulic technology. Background technique [0002] The hydraulic cylinder is an actuator that converts hydraulic energy into mechanical energy in a hydraulic device to achieve linear reciprocating motion. In the application of equipment, it is often required that the oil shortage is reliably locked at any output working position and fixed for a long time. However, the current locking method is guaranteed by various hydraulic locking circuits. The locking method of the hydraulic locking circuit inevitably has leakage, which cannot guarantee the reliability of locking; and in some special applications, it is often required that the cylinder piston rotates at a small angle during the expansion ...

AI Technical Summary

Problems solved by technology

The locking method of the hydraulic locking circuit inevitably has leakage, which cannot guarantee the reliability of locking; and in some special applications, it is often required that the cylinder piston rotates at a small angle during the expansion and contraction process to perform specific operations, while the current trapezoidal groove There are many parts in the rotating mechanism, the structure is too complicated, it is difficult to process, and the application cost is high

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