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Rotary actuation device with buffer structure

A technology of rotary actuation and buffer structure, applied in the direction of fluid pressure actuation device, etc., can solve the problems of difficult processing and manufacturing, cumbersome assembly, and high production cost, achieve high social and economic benefits, and solve the problem of poor equipment stability and production costs. low effect

Active Publication Date: 2014-01-08
NINGBO AIRTAC AUTOMATIC INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of the prior art pneumatic rotary actuating device, such as complex buffer structure, difficult manufacturing, high production cost, cumbersome assembly, and easy accidents when adjusting the buffer screw, to provide a simple structure, Rotary actuating device with buffer structure that is easy to process and manufacture and low in production cost
[0004] Another object of the present invention is to provide a stable working and low noise pneumatic rotary actuator to solve the problems of poor equipment stability, serious noise pollution, fast equipment wear and short service life caused by strong impact force in the prior art. , Swing actuation device with buffer structure and long service life

Method used

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  • Rotary actuation device with buffer structure
  • Rotary actuation device with buffer structure
  • Rotary actuation device with buffer structure

Examples

Experimental program
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Effect test

Embodiment 1

[0022] existfigure 1 In the shown embodiment 1, a rotary actuating device with a buffer structure includes a cylinder and a sliding device arranged in the piston chamber of the cylinder. The two ends of the sliding device are respectively provided with a front piston 1 and a rear piston 2, and the front piston and the rear piston are respectively arranged. The rear piston is connected into one body through the rack 3 provided in the middle of the sliding device. The rack is meshed with the gear 4 provided with the power output shaft. There are two cylinders, which are symmetrically arranged on both sides of the gear. The two cylinders The plane where the axis is located is perpendicular to the axis of the gear. The two ends of the cylinder are respectively provided with a front cover 5 and a rear cover 6. The front cover and the rear cover of the cylinder on both sides of the gear are of an integrated structure, that is, the front covers of the two cylinders are integrated. str...

Embodiment 2

[0024] exist Figure 4 In the shown embodiment 2, the flow control mechanism is an orifice 20 arranged on the front cover (see Figure 7 ), and the rest are the same as in Example 1. What this embodiment realizes is the buffering of a stroke at the beginning of the intake and the buffering of a stroke at the end of the exhaust.

Embodiment 3

[0026] exist Figure 5 In the shown embodiment 3, the air holes in the cylinder wall are three restricting holes 22, which are arranged in a straight line in the axial direction of the cylinder wall of the cylinder. The cross-sectional area of ​​the above-mentioned restrictor hole increases linearly from the front cover to the rear cover, which is 1 to 2 to 3 (see Figure 6 ), the distance between the front and rear seal rings on the front piston is greater than the length of the cylinder wall air path where the restrictor hole is located, that is, the sealing distance between the front and rear seal rings is greater than the distance between the largest hole walls of the restrictor holes on the front and rear sides, All the other are identical with embodiment 2. What this embodiment realizes is the buffering of a stroke at the beginning of the intake and the gentle buffering of a stroke at the end of the exhaust.

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Abstract

The invention discloses a rotary actuation device with a buffer structure. The rotary actuation device comprises two air cylinders, and front pistons and rear pistons which are arranged in piston cavities of the air cylinders, wherein gear racks are arranged on the middle parts of the front pistons and the rear pistons; the gear racks are engaged with a gear provided with a power output shaft; the two air cylinders are symmetric to both sides of the gear; both ends of each air cylinder are provided with a front cover and a rear cover; an air connection opening is formed on each front cover; front piston cavities and the air connection openings of the air cylinders are communicated with each other through front air paths arranged in the front covers; the air connection openings are connected with rear air paths; flow control mechanisms are arranged at connected positions of the air connection openings and the rear air paths; and cylinder wall air holes communicated with the front piston cavities are formed in the rear air paths close to the flow control mechanisms. By the rotary actuation device with the buffer structure, the problems of low equipment stability, heavy noise pollution, easiness in abrasion and short service life caused by large impact force in the pneumatic rotary actuation device in the prior art can be solved effectively; and the rotary actuation device has extremely high social and economic benefits.

Description

technical field [0001] The invention relates to a rotary actuating device for driving various machines, in particular to a rotary actuating device with a buffer structure. Background technique [0002] The rotary actuating device driven by air pressure uses a piston with a rack to slide back and forth in the cylinder, driving the gear to rotate to output power. In the rotary actuating device of the prior art, in order to absorb the impact force generated by the inertial energy when the piston stops at the stroke end, an external mechanical buffer mechanism is usually used. However, such a mechanical shock absorber has the problems of making an impact sound when stopped, that abrasion due to abrasion tends to develop in the impact portion, and that parts such as the shock absorber protrude to the outside and become obstacles. The publication date is September 5, 2001, and the patent document with the publication number CN1311399A discloses a rotary actuating device with a bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/00
Inventor 王世忠王建峰
Owner NINGBO AIRTAC AUTOMATIC INDAL