A combined connection device preventing radial rotation and axial movement of the piston

Abstract

The invention provides a combined connecting device for preventing the radial rotation and axial movement of the piston, which mainly includes a cylinder, a piston rod, a lock nut, an elastic washer, a retaining ring, a sealing ring, a buffer sleeve and a piston. The piston consists of Piston disc A and piston disc B are combined. It is characterized in that the radial rotation and axial movement of the piston are prevented by using the piston rod shaft shoulder, the lock nut, the elastic washer with protrusions, and the torsional deformation of the elastic washer. The invention realizes the weight reduction of the piston without loss of strength through the hollow cylindrical piston disc containing the pillar; through the protrusion on the elastic washer and the circlip, the shaft shoulder of the piston rod and the lock nut, the prevention of the radial direction of the piston is realized. Rotation and axial movement; the buffer sleeve between the piston discs prevents them from colliding with each other.

Description

technical field [0001] The invention relates to a combined connecting device for preventing radial rotation and axial movement of a piston, in particular to a hollow cylindrical piston disc containing pillars to achieve weight reduction without loss of strength of the piston; through elastic washers and The protrusion on the circlip, the piston rod shaft shoulder and the lock nut can prevent the radial rotation and axial movement of the piston; the buffer sleeve between the piston discs can prevent them from colliding with each other, which belongs to the technical research and development field of hydraulic cylinders. Background technique [0002] Hydraulic cylinders use the linear reciprocating motion of the piston to convert hydraulic energy into mechanical energy. However, due to the singleness of the current piston structure and connecting device, it is easy to cause radial rotation or axial movement of the piston during use. The radial rotation of the piston will easi...

AI Technical Summary

Problems solved by technology

However, due to the singleness of the current piston structure and connecting device, it is easy to cause radial rotation or axial movement of the piston during use.

The radial rotation of the piston will easily cause smooth agitation inside the hydraulic cylinder, and the agitated fluid will react on the piston and affect the performance of the hydraulic cylinder; in addition, the radial rotation of the piston will easily drive the axial fixing parts of the piston to rotate together, so that the fixed loose parts, causing axial movement of the piston

The axial movement of the piston will cause a gap between the piston and the fastener, which will cause a delay when the piston of the hydraulic cylinder is started, and even the shock and jump of the piston rod.

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