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Pneumatic executive component

A technology of pneumatic actuators and movable connections, which is applied in the direction of fluid pressure actuation devices, etc., can solve the problems of poor generality, large space occupation, and inability to use pneumatic actuators, and achieves compact structure, improved stress conditions, and increased service life. Effect

Active Publication Date: 2015-02-11
CHANGZHENG ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the existing shift fork structure actuators occupy a large space, and cannot be used when the space is narrow or there are restrictions, which makes the versatility of the pneumatic actuators poor

Method used

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  • Pneumatic executive component
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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, invention is described in further detail.

[0023] refer to figure 1 , figure 1 It is a structural schematic diagram of the pneumatic actuator in an embodiment of the present invention. The pneumatic actuator in the present invention includes: a cylinder body 1 composed of a cylinder head 11 and a partition 12 , a piston 2 , a piston rod 3 and a transmission sleeve 4 . One side of the piston 2 is coaxially connected to the piston rod 3, and is assembled in the inner cavity of the cylinder body 1. When the air inlet "A" of the cylinder body 1 enters the air, and the air outlet "B" exits the air, the piston 2 is pushed, and the air from the cylinder body 1 side to side movement in lumen. On the outer circle of the protruding end 32 of the piston rod 3, a spiral groove 31 is opened in the axial direction, and the inner diameter 41 of the transmission sleeve 4 corresponds to the outer diameter of the protruding end 32 of th...

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Abstract

The invention discloses a pneumatic executive component. The pneumatic executive component comprises a cylinder body, a piston, a piston rod and a transmission sleeve. The transmission sleeve sleeves the extension end of the piston rod, and the extension end is provided with a spiral groove. When the extension end of the piston rod moves relative to the cylinder body, a guide rod drives the transmission sleeve to rotate around the extension end of the piston rod under pushing action of the spiral groove, and accordingly linear movement of the piston is converted into axial movement. By the aid of a screw pair guide mechanism, guide distance is shortened, transmission space is saved, and the problems of long guide distance and large component size in the prior art are solved.

Description

technical field [0001] The invention relates to the field of gas transmission, in particular to pneumatic actuators. Background technique [0002] Pneumatic actuators are important components in pneumatic transmission systems and control systems. It is widely used in petrochemical, coal chemical, metallurgy, electric power and other industrial production and processing fields. In pneumatic transmission systems, pneumatic actuators can also be used to control the opening and closing of ball valves, disc valves, plug valves and other valves. The execution process of the existing shift fork type pneumatic actuator is that the piston and the piston rod are driven by air pressure to make a linear motion, and the piston rod drives the shift fork to rotate, converting the linear motion into axis rotation. In order to make the fork-type pneumatic element rotatable and output 90° torque, the corresponding linear stroke will require a relatively large stroke distance, thereby requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/02
CPCF15B15/1414F15B15/1457
Inventor 周岩李峰黎玉飞刘永良
Owner CHANGZHENG ENG