Annular piston type pneumatic actuating mechanism

Abstract

The invention discloses an annular piston type pneumatic actuating mechanism, which belongs to the field of pneumatic actuating mechanism production. The annular piston type pneumatic actuating mechanism mainly comprises an air cylinder assembly, a piston assembly and a transmission output assembly, wherein the air cylinder assembly is used for being assembled into a plurality of isometric cylinder bodies, an annular air cylinder is formed by connecting the isometric cylinder bodies in series, and the isometric cylinder bodies at least comprise one open cylinder body and one sealed cylinder body; the piston assembly comprises a pneumatic piston, a driven piston and an annular push rod, the pneumatic piston is arranged in the sealed cylinder body, the driven piston is arranged in the open cylinder body, and adjacent pneumatic pistons and / or driven pistons are respectively in transmission connection through isometric annular push rods; and the transmission output assembly comprises a driving shaft and a connecting crank, and the driving shaft is coaxially arranged at the position of an axis of the annular air cylinder and is in transmission connection with the piston assembly arranged at the position of the open cylinder body through the connecting crank. Compared with the prior art, the annular piston type pneumatic actuating mechanism disclosed by the invention has the characteristics of convenience for large-torque output, energy saving, consumption reducing, and the like.

Description

technical field [0001] The invention relates to an actuator, in particular to an annular piston type pneumatic actuator. Background technique [0002] The length of the force arm of the pneumatic actuator in the prior art cannot be effectively increased due to the limited structure, and the torque of the actuator can only be increased by increasing the radial dimension of the piston. However, simply increasing the radial dimension of the piston will increase the volume of the cylinder, increase gas consumption, and have disadvantages such as high energy consumption. Contents of the invention [0003] The technical task of the present invention is to provide a high-torque, low-energy-consumption annular piston-type pneumatic actuator for the above-mentioned deficiencies in the prior art. [0004] The technical task of the present invention is achieved in the following manner: the annular piston type pneumatic actuator is mainly composed of a cylinder assembly, a piston ass...

AI Technical Summary

Problems solved by technology

[0002] Pneumatic actuators in the prior art cannot effectively increase the length of the force arm due to structural limitations, and increasing the torque of the actuator can only be achieved by increasing the radial size of the piston

However, simply increasing the radial size of the piston will increase the volume of the cylinder, increase the consumption of gas volume, and have disadvantages such as high energy consumption.

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