CN220016271U

CN220016271U - Shifting fork type single-action pneumatic actuator

Info

Publication number: CN220016271U
Application number: CN202320906157.5U
Authority: CN
Inventors: 朱博; 叶际学; 朱文华
Original assignee: Ainuo Actuator Co ltd
Current assignee: Ainuo Actuator Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-11-14
Anticipated expiration: 2033-04-17

Abstract

The utility model relates to a shifting fork type single-acting pneumatic actuator which comprises a cylinder body, a rotating shaft, a cylinder sleeve, a piston and a spring assembly, wherein the cylinder body is rotatably connected with the rotating shaft, the cylinder sleeves are fixedly connected to the two sides of the cylinder body, two groups of pistons are slidably connected to the cylinder body, the spring assembly is arranged between the pistons and the cylinder sleeve, a sealing cavity is formed between the pistons, the cylinder body is provided with an air hole connected with the sealing cavity, the rotating shaft is provided with a shifting fork piece, the pistons are provided with rolling sleeves matched with the shifting fork piece, and the pistons control the rotating shaft to rotate through the shifting fork piece. The utility model aims to realize pneumatic opening action and spring automatic closing action by adopting the transmission of the shifting fork structure, and compared with the traditional gear transmission actuator, the gear transmission actuator has the advantages of high transmission efficiency, small transmission abrasion and prolonged service life.

Description

Shifting fork type single-action pneumatic actuator

Technical Field

The utility model relates to the technical field of pneumatic valves, in particular to a shifting fork type single-acting pneumatic actuator.

Background

The pneumatic actuator is applied to control equipment of an angular travel control valve, and is widely applied to the industrial fields of metallurgy, petroleum, chemical industry, water conservancy, machinery and the like by controlling the angular displacement of an output shaft through air pressure. However, the conventional actuator opens or closes the valve by means of a gear or rack transmission, and has the disadvantages of large abrasion, limited service life, small output torque and inflexible action, so that the conventional actuator has a limited application environment.

Disclosure of Invention

In order to overcome the defects of the background technology, the utility model adopts the following technical scheme: the utility model provides a shift fork formula single-acting pneumatic actuator, includes cylinder body, pivot, cylinder liner, piston and spring assembly, cylinder body swivelling joint has the pivot, the both sides fixedly connected with cylinder liner of cylinder body, sliding connection has two sets of pistons in the cylinder body, be equipped with spring assembly between piston and the cylinder liner, form sealed chamber between the piston, the cylinder body is equipped with the gas pocket that is connected with sealed chamber, the pivot is equipped with shift fork spare, the piston is equipped with the roller sleeve with shift fork spare assorted, and the piston passes through shift fork spare control pivot rotation.

Further, the spring assembly comprises a slide bar, a blocking piece a, a blocking piece b and a spring, wherein the blocking piece a and the blocking piece b are respectively connected to two ends of the slide bar, the spring is sleeved on the slide bar, and the spring is arranged between the blocking piece a and the blocking piece b.

Further, the baffle a and the baffle b are provided with sealing elements, and the sealing elements are connected with a sliding rod in a sliding manner.

Further, a gasket is arranged between the sliding rod and the sealing piece.

Furthermore, a positioning block is arranged on one side of the piston, the blocking piece a is connected to the piston in a clamping mode through the positioning block, the cylinder sleeve is provided with an accommodating groove, and the blocking piece b is arranged in the accommodating groove.

Further, a double-end support is arranged on one side of the piston, which is opposite to the blocking piece a, a rolling sleeve is rotatably connected between the double-end supports, a clamping groove matched with the rolling sleeve is formed in the shifting fork piece, and the rolling sleeve is clamped to the shifting fork piece through the clamping groove.

Further, the double-end support is provided with a roller, and the roller is rotatably connected with a roller sleeve.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model adopts the transmission of the shifting fork structure to realize the pneumatic opening action and the spring automatic closing action, and compared with the traditional gear transmission actuator, the utility model has the advantages of high transmission efficiency, small transmission abrasion and prolonged service life.

Embodiments of the present utility model are further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a half cross-sectional view of the present utility model;

FIG. 2 is a schematic diagram showing the relationship between the piston and the shaft during the closing operation of the present utility model

FIG. 3 is a schematic diagram showing the relationship between the piston and the shaft during the opening operation of the present utility model

FIG. 4 is a cross-sectional view of the spring assembly of the present utility model;

FIG. 5 is a perspective view of a spindle according to the present utility model;

FIG. 6 is a perspective view of a piston of the present utility model;

wherein: 1-cylinder body, 2-rotating shaft, 3-cylinder sleeve, 4-piston, 5-spring component, 6-shifting fork component, 7-rolling sleeve, 11-sealing cavity, 12-air hole, 13-positioning block, 14-containing groove, 15-double-head bracket, 16-clamping groove, 17-roller, 51-sliding rod, 52-baffle a, 53-baffle b, 54-spring, 55-sealing component and 56-gasket;

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1, a shifting fork type single-acting pneumatic actuator comprises a cylinder body 1, a rotating shaft 2, a cylinder sleeve 3, a piston 4 and a spring assembly 5, wherein the rotating shaft 2 is rotationally connected with the cylinder body 1, the cylinder sleeve 3 is fixedly connected with two sides of the cylinder body 1, two groups of pistons 4 are slidably connected in the cylinder body 1, the spring assembly 5 is arranged between the pistons 4 and the cylinder sleeve 3, a sealing cavity 11 is formed between the pistons 4, the cylinder body 1 is provided with an air hole 12 connected with the sealing cavity 11, the rotating shaft 2 is provided with a shifting fork piece 6, the pistons 4 are provided with rollers 7 matched with the shifting fork piece 6, and the pistons 4 control the rotating shaft 2 to rotate through the shifting fork piece 6.

As shown in fig. 2 and 3, when the piston 4 moves, the rotating shaft 2 is driven to rotate by the shifting fork structure, when the opening action is required, compressed gas is injected into the sealing cavity 11 through the air hole 12, the piston 4 moves, the spring assembly 5 is compressed, and the rotating shaft 2 is controlled to rotate, so that the opening action is completed; when the closing action is needed, the compressed gas is stopped, at the moment, the spring assembly 5 is reset, the closing action is automatically completed, and compared with a traditional gear-driven actuator, the gear-driven actuator is high in transmission efficiency, small in transmission abrasion and long in service life.

As shown in fig. 4, the spring assembly 5 in this embodiment includes a slide rod 51, a blocking member a52, a blocking member b53 and a spring 54, two ends of the slide rod 51 are respectively connected with the blocking member a52 and the blocking member b53, the slide rod 51 is sleeved with the spring 54, and the spring 54 is disposed between the blocking member a52 and the blocking member b 53. When the spring assembly 5 is compressed, the piston 4 moves in the direction of the cylinder liner 3, the distance between the stop a52 and the stop b53 decreases, so that the spring 54 is compressed.

In this embodiment, the stoppers a52 and b53 are provided with a seal 55, and the slide rod 51 is slidably connected to the seal 55. Specifically, a gasket 56 is provided between the slide rod 51 and the seal 55. By limiting the sealing member 55, the blocking member a52 and the blocking member b53 are prevented from being separated from the sliding rod 51, and meanwhile, the service life of the spring assembly 5 is prolonged.

In this embodiment, a positioning block 13 is disposed on one side of the piston 4, a blocking member a52 is clamped to the piston 4 by the positioning block 13, the cylinder liner 3 is provided with a receiving groove 14, and a blocking member b53 is disposed in the receiving groove 14. The baffle a52 is clamped at the piston 4 through the positioning block 13, the baffle b53 is clamped at the cylinder sleeve 3 through the accommodating groove 14, the spring assembly 5 is prevented from being separated from the piston 4/the cylinder sleeve 3 to influence the stroke length of the piston 4, the rotating action of the rotating shaft 2 is ensured to be in place, and the structural stability is improved.

As shown in fig. 5 and 6, in the present embodiment, a double-end bracket 15 is disposed on a side of the piston 4 facing away from the stopper a52, rollers 7 are rotatably connected between the double-end brackets 15, the fork member 6 is provided with a clamping groove 16 matched with the rollers 7, and the rollers 7 are clamped to the fork member 6 through the clamping groove 16. Specifically, the double-ended support 15 is provided with a roller 17, and the roller 17 is rotatably connected with the roller sleeve 7.

Claims

1. The utility model provides a shift fork formula single-acting pneumatic actuator, its characterized in that includes cylinder body, pivot, cylinder liner, piston and spring assembly, cylinder body swivelling joint has the pivot, the both sides fixedly connected with cylinder liner of cylinder body, sliding connection has two sets of pistons in the cylinder body, be equipped with spring assembly between piston and the cylinder liner, form sealed chamber between the piston, the cylinder body is equipped with the gas pocket that is connected with sealed chamber, the pivot is equipped with shift fork spare, the piston is equipped with the roller sleeve with shift fork spare assorted, and the piston passes through shift fork spare control pivot rotation.

2. A shift fork type single-acting pneumatic actuator as claimed in claim 1, wherein: the spring assembly comprises a slide bar, a blocking piece a, a blocking piece b and a spring, wherein the blocking piece a and the blocking piece b are respectively connected to two ends of the slide bar, the spring is sleeved on the slide bar, and the spring is arranged between the blocking piece a and the blocking piece b.

3. A shift fork type single-acting pneumatic actuator as claimed in claim 2, wherein: the baffle a and the baffle b are provided with sealing elements, and the sealing elements are connected with a sliding rod in a sliding manner.

4. A shift fork type single-acting pneumatic actuator as claimed in claim 3, wherein: a gasket is arranged between the sliding rod and the sealing piece.

5. A shift fork type single-acting pneumatic actuator as claimed in claim 4, wherein: one side of the piston is provided with a positioning block, the blocking piece a is connected to the piston in a clamping mode through the positioning block, the cylinder sleeve is provided with an accommodating groove, and the blocking piece b is arranged in the accommodating groove.

6. A fork-type single-acting pneumatic actuator as claimed in any one of claims 1 to 5, wherein: the piston is equipped with the double-end support in the one side that keeps off piece a dorsad, swivelling joint has the roller between the double-end support, shift fork spare be equipped with roller matched with draw-in groove, the roller passes through the draw-in groove joint in shift fork spare.

7. A shift fork type single-acting pneumatic actuator as defined in claim 6, wherein: the double-end support is provided with a roller, and the roller is rotationally connected with a roller sleeve.