A buffer actuation device suitable for gas actuation

Abstract

The invention provides a buffer actuation device suitable for gas actuation. The buffer actuation device comprises a device body, a floating piston, a piston rod subassembly, an end cover, an upper sealing ring of the piston rod, an end cover sealing ring, a bottom sealing ring of the piston rod and a floating piston sealing ring, wherein a damping hole is formed in the piston rod subassembly; oil fills spaces between the floating piston and the piston rod subassembly, and between the piston rod subassembly and the end cover; when an actuating cylinder moves, the oil between the piston rod subassembly and the end cover is pressed and flows to the space between the floating piston and the piston rod subassembly through the damping hole, so as to generate oil resistance, and thus the buffer effect of the full stroke of the actuating cylinder is achieved; the damping characteristics of the actuating cylinder can be adjusted by adjusting parameters such as the size and the length of the damping hole, and the density of the oil filling the inside of the actuating cylinder, so as to achieve the required buffer effect.

Description

technical field [0001] The invention relates to a buffer actuation device suitable for gas actuation, which is used for providing buffer during the actuation process of a pneumatic actuation cylinder, and can also be expanded and applied to a hydraulic actuation cylinder, belonging to the technical fields of air pressure and hydraulic pressure. Background technique [0002] As a linear reciprocating actuator, the actuator is widely used in all walks of life. Commonly used actuators include hydraulic actuators and pneumatic actuators. Generally, a buffer device is used at the end of the stroke of the actuator to generate greater resistance, so that the working parts can be braked smoothly, and the collision between the piston and the cylinder block / cylinder head can be avoided. [0003] An ideal buffer device should keep the buffer pressure constant throughout the working process of the actuator. However, in the existing pneumatic actuators, buffer throttle valves, buffer plu...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a buffer actuation device suitable for gas actuation in view of the deficiencies of the prior art. The full stroke buffer problem of the moving cylinder

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