Driving cylinder

Abstract

The invention relates to a driving cylinder. The driving cylinder comprises a cylinder body, a piston, a piston rod, a cylinder cover and a rack, wherein the piston is slidably arranged in the cavityof the cylinder body; the rack is detachably arranged on the outer wall of one side of the cylinder body; the piston rod is detachably arranged on the piston; a first air path is formed in one end ofthe piston rod, and a second air path is formed in the other end of the piston rod; and at least two first air grooves are formed in one side of the piston in the axial direction, and at least two second air grooves are formed in the other side of the piston in the axial direction. According to the purpose of the invention, the rack is arranged on the outer wall of the cylinder body, when the cylinder is ventilated, the cylinder body moves along the piston rod in parallel, and by arrangement of the rack, parallel movement of the cylinder is transformed into rotation; the first air path and thesecond air path are separately formed in two ends of the piston rod, and an external air source drives the cylinder favorably; and the first air grooves and the second air grooves are separately formed in the two sides of the piston in the axial direction, and the circumstance that air inlet and air outlet are affected when the piston is in contact with the bottom of the cylinder or the inner surface of the cylinder cover is avoided.

Description

technical field [0001] The invention belongs to the technical field of cylinders, and relates to a driving cylinder. Background technique [0002] At present, most common rotary drives powered by compressed air are driven by air motors. Their main working medium is compressed air. Through the expansion of compressed air, the pressure of the gas is used to change the volume to realize the conversion of pressure energy to rotary mechanical energy; the vane motor is small in size, light in weight, and simple in structure. It is used in the conditions of small capacity, high speed and low torque, but it has the disadvantages of large air consumption and low efficiency. The gear motor structure can output high torque and low speed, but the structure is complex, the torque ripple is large, and the efficiency is low. Compared with the vane type and gear type, the piston motor structure can output high power and torque, but the torque is still low compared to the electric motor or...

AI Technical Summary

Problems solved by technology

Their main working medium is compressed air. Through the expansion of compressed air, the pressure of the gas is used to change the volume, etc., to realize the conversion of pressure energy to rotary mechanical energy; the structure of the vane motor is small in size, light in weight, and simple in structure. It is used under the conditions of small capacity, high speed and low torque, but it has the disadvantages of large air consumption and low efficiency

The structure of the gear motor can output high torque and low speed, but the structure is complex, the torque ripple is large, and the efficiency is low

The structure of the piston motor can output high power and torque compared with the vane type and the gear type, but the torque is still lower than that of the electric motor or the hydraulic motor, and the structure is complex. There is compression negative work in the exhaust process, and the efficiency is low.

Images