CN216382779U - Pneumatic actuator with buffering effect - Google Patents
Pneumatic actuator with buffering effect Download PDFInfo
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- CN216382779U CN216382779U CN202121389225.2U CN202121389225U CN216382779U CN 216382779 U CN216382779 U CN 216382779U CN 202121389225 U CN202121389225 U CN 202121389225U CN 216382779 U CN216382779 U CN 216382779U
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Abstract
The utility model discloses a pneumatic actuator with a buffering effect, which comprises a conventional piston type pneumatic actuator, wherein the piston type pneumatic actuator comprises a cylinder body, an upper cylinder cover, a lower cylinder cover and a piston; a plurality of first buffer devices are uniformly and vertically arranged on the inner plane of the upper cylinder cover along the circumferential direction, and the upward action of the pneumatic actuating mechanism is buffered and damped through the matching of the first buffer devices and the upper surface of the piston; still be equipped with the vertical several second buffer along circumference equipartition on the internal planes of lower cylinder cap, through the cooperation of second buffer and piston lower surface, cushion the shock attenuation to pneumatic actuator's downward action. The pneumatic actuating mechanism is simple in structure and reasonable in design, the first buffer device and the second buffer device are adopted to buffer and damp the upward action and the downward action of the pneumatic actuating mechanism respectively, so that the pneumatic actuating mechanism has spring buffering functions at the starting point and the final point of the stroke, and the pneumatic actuating mechanism can be used in occasions of rapid and frequent actions.
Description
Technical Field
The utility model relates to a pneumatic actuating mechanism, in particular to a pneumatic actuating mechanism with a buffering effect.
Background
At present, pneumatic control valves are increasingly applied to occasions of frequent switching and quick switching-off control, but in practical use, some pneumatic control valves have special structures such as soft valve seats or acute angle sealing valve seats, and violent impact of the pneumatic control valves is not allowed. In addition, when the medium that circulates is flammable explosive special medium, easily because of the collision produces the spark and causes the accident, also disallows pneumatic control valve to take place violent impact either. It is desirable to design a pneumatic actuator with a damper as a drive for such a pneumatic control valve to avoid violent impact of the pneumatic control valve in the event of frequent opening and closing and rapid shut-off control.
At present, a pneumatic actuator with a buffer device generally realizes buffer control by changing the flow of air inlet and air outlet, but the buffer stroke of the pneumatic actuator is long, and the opening and closing positions have serious delay; in addition, the structure size is large, the space size required for installation is large, and the production cost is high. Therefore, the above problems need to be solved.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a pneumatic actuating mechanism with a buffering effect, which is simple in structure and reasonable in design, and adopts a plurality of first buffering devices and second buffering devices to buffer and damp the upward action and the downward action of the pneumatic actuating mechanism respectively, so that the pneumatic actuating mechanism has a spring buffering function at a stroke starting point and a stroke end point, and can be used in occasions of quick and frequent actions.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model discloses a pneumatic actuating mechanism with a buffering effect, which comprises a piston type pneumatic actuating mechanism, wherein the piston type pneumatic actuating mechanism comprises a cylinder body, an upper cylinder cover, a lower cylinder cover and a piston; the innovation points are as follows: the device also comprises a first buffer device and a second buffer device; a plurality of first buffer devices are uniformly and vertically arranged on the inner plane of the upper cylinder cover along the circumferential direction, and each first buffer device comprises a buffer frame, a rubber pad, a pressing plate, a supporting rod, a fixing plate, a bottom plate and a buffer spring; each buffer frame is of a horizontally arranged hollow cuboid structure, fixing plates are horizontally and symmetrically welded at the upper positions of the left side and the right side of the buffer frame, the upper surface of each fixing plate is coplanar with the upper surface of the corresponding buffer frame, and rubber pads are horizontally attached and fixedly arranged on the upper surfaces of the fixing plates and the buffer frame respectively; a pressing plate is horizontally arranged in the middle of the inside of each buffer frame, each pressing plate is of a rectangular structure matched with the inside of the corresponding buffer frame, and the peripheral sides of the pressing plates are respectively abutted and attached to the inner side walls of the corresponding buffer frames; a plurality of buffer springs are uniformly and vertically arranged on the upper surface of each pressing plate at intervals in a matrix manner, the upper end of each buffer spring is fixedly connected with the inner top surface of the corresponding buffer frame, and the lower end of each buffer spring is fixedly connected with the upper surface of the corresponding pressing plate; supporting rods are also vertically and symmetrically arranged at four right angles of the lower surface of each pressing plate, the upper end of each supporting rod is fixedly connected with the corresponding pressing plate, the lower end of each supporting rod vertically extends downwards to form the lower surface of the corresponding buffering frame, each supporting rod is vertically and vertically slidably connected with the corresponding buffering frame, and the lower end of each supporting rod is fixedly connected with the upper surface of the corresponding bottom plate which is horizontally arranged; the upper end of each first buffer device is respectively abutted against and contacted with the upper surface of the piston through a rubber pad, the lower end of each first buffer device is respectively screwed and fixed with the inner plane of the upper cylinder cover through a bottom plate, and the upward action of the pneumatic actuating mechanism is buffered and damped through the matching of the first buffer devices and the upper surface of the piston;
a plurality of second buffer devices are uniformly and vertically arranged on the inner plane of the lower cylinder cover along the circumferential direction, and the structure of each second buffer device is the same as that of each first buffer device; the upper end of each second buffer device is in abutting contact with the lower surface of the piston through a rubber pad, the lower end of each second buffer device is fixed with the inner plane of the lower cylinder cover through a bottom plate in a threaded manner, and the downward movement of the pneumatic actuating mechanism is buffered and damped through the matching of the second buffer devices and the lower surface of the piston.
Preferably, the maximum stroke of the upward movement buffer of each first buffer device is 2-5 mm.
Preferably, the maximum stroke of the downward movement buffer of each second buffer device is 2-5 mm.
Preferably, the pre-tightening load of the buffer spring in each of the first buffer device and the second buffer device is 0.02-0.05 times of the theoretical output torque of the whole pneumatic actuating mechanism.
Preferably, a plurality of upper contact grooves are horizontally embedded in positions, corresponding to the first buffer devices, on the upper surface of the piston, and each upper contact groove is matched with a rubber pad corresponding to the first buffer device; the upper end of each first buffer device is abutted and contacted in the corresponding upper contact groove of the piston through a rubber pad respectively, and the pneumatic actuating mechanism is buffered and damped in the upward action.
Preferably, a plurality of lower contact grooves are horizontally embedded in the corresponding positions of the lower surface of the piston, which are opposite to the second buffer devices, respectively, and each lower contact groove is matched with a rubber pad corresponding to the second buffer device; the upper end of each second buffer device is respectively abutted and contacted in the corresponding lower contact groove of the piston through a rubber pad, and the downward action of the pneumatic actuating mechanism is buffered and damped.
The utility model has the beneficial effects that:
(1) the pneumatic actuating mechanism is simple in structure and reasonable in design, and adopts a plurality of first buffer devices and second buffer devices to buffer and damp the upward action and the downward action of the pneumatic actuating mechanism respectively, so that the pneumatic actuating mechanism has spring buffer functions at the starting point and the final point of the stroke, and can be used in occasions of quick and frequent actions;
(2) the buffering strokes of the first buffering device and the second buffering device are accurate and controllable, and the buffering strokes are small, so that the response speed of the pneumatic actuating mechanism is not influenced;
(3) the first buffer device and the second buffer device are arranged in the pneumatic actuating mechanism, so that the pneumatic actuating mechanism is not easy to rust or corrode under the influence of the environment, has high stability, adopts a modular design, and is simple in structure, easy to replace, small in installation space and easy to maintain;
(4) the utility model does not need to additionally add special control accessories, and can greatly reduce the accessory configuration cost generated by other buffer structure forms.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pneumatic actuator with a buffering effect according to the present invention.
Fig. 2 is a schematic structural diagram of the buffering device in fig. 1.
Wherein, 1-cylinder body; 2, mounting a cylinder cover; 3-lower cylinder cover; 4-a piston; 5-a first buffer means; 6-upper contact grooves; 7-lower contact grooves; 8-a second buffer means; 51-a buffer frame; 52-a platen; 53-support bars; 54-a base plate; 55-a buffer spring; 56-fixing plate; 57-rubber pad.
Detailed Description
The technical solution of the present invention will be clearly and completely described by the following detailed description.
The pneumatic actuator with the buffering effect is formed by improving a piston type pneumatic actuator, as shown in figure 1, the piston type pneumatic actuator comprises a cylinder body 1, an upper cylinder cover 2, a lower cylinder cover 3 and a piston 4; a plurality of first buffer devices 5 are uniformly and vertically arranged on the inner plane of the upper cylinder cover 2 along the circumferential direction, the fixed end of each first buffer device 5 is fixedly connected with the upper cylinder cover 2 in a threaded manner, the buffer end of each first buffer device 5 is vertically and downwards arranged, and the first buffer devices 5 are matched with the upper surface of the piston 4 to buffer and damp the upward action of the pneumatic actuating mechanism; still follow the vertical several second buffer 8 that is equipped with of circumference equipartition on the internal planes of lower cylinder cap 3, each second buffer 8's stiff end all with lower cylinder cap 3 spiro union fixed, and its buffering end is vertical upwards to be set up, through the cooperation of second buffer 8 and piston 4 lower surface, cushions the shock attenuation to pneumatic actuator's downward action.
Each first buffer device 5 comprises a buffer frame 51, a rubber pad 57, a pressing plate 52, a supporting rod 53, a fixing plate 56, a bottom plate 54 and a buffer spring 55; as shown in fig. 1 and 2, each buffer frame 51 is a horizontally arranged hollow cuboid structure, and fixing plates 56 are horizontally and symmetrically welded at positions above the left and right sides of the buffer frame, the upper surface of each fixing plate 56 is coplanar with the upper surface of the corresponding buffer frame 51, and rubber pads 57 are horizontally attached and fixed on the upper surfaces of the fixing plates 56 and the corresponding buffer frames 51 respectively; a pressing plate 52 is horizontally arranged in the middle of the inside of each buffer frame 51, each pressing plate 52 is of a rectangular structure matched with the inside of the corresponding buffer frame 51, and the peripheral sides of the pressing plates are respectively abutted and attached to the inner side walls of the corresponding buffer frames 51;
as shown in fig. 1 and 2, a plurality of buffer springs 55 are uniformly and vertically arranged on the upper surface of each pressing plate 52 at intervals, the upper end of each buffer spring 55 is fixedly connected with the inner top surface of the corresponding buffer frame 51, and the lower end of each buffer spring 55 is fixedly connected with the upper surface of the corresponding pressing plate 52; the four right angles of the lower surface of each pressing plate 52 are also vertically and symmetrically provided with supporting rods 53, the upper end of each supporting rod 53 is fixedly connected with the corresponding pressing plate 52, the lower end of each supporting rod 53 vertically extends downwards to form the lower surface of the corresponding buffering frame 51, each supporting rod 53 is vertically and vertically connected with the corresponding buffering frame 51 in a sliding mode, and the lower end of each supporting rod 53 is fixedly connected with the upper surface of the corresponding bottom plate 54 which is horizontally arranged. The maximum upward movement buffering stroke of each first buffering device 5 is 2-5 mm, and the pre-tightening load of the buffering spring 55 is 0.02-0.05 times of the theoretical output torque of the whole pneumatic actuating mechanism. In the utility model, the upper end of each first buffer device 5 is respectively abutted against the upper surface of the piston 4 through a rubber pad 57, the lower end of each first buffer device is respectively fixed with the inner plane of the upper cylinder cover 2 through a bottom plate 54 in a threaded manner, and the upward action of the pneumatic actuating mechanism is buffered and damped through the matching of the first buffer devices 5 and the upper surface of the piston 4.
The structure of each second buffer device 8 is the same as that of each first buffer device 5; as shown in FIG. 1, the maximum stroke of the downward movement buffer of each second buffer device 8 is 2-5 mm, and the pre-tightening load of the buffer spring 55 is 0.02-0.05 times of the theoretical output torque of the whole pneumatic actuator. In the utility model, the upper end of each second buffer device 8 is respectively abutted against and contacted with the lower surface of the piston 4 through a rubber pad 57, the lower end of each second buffer device is respectively fixed with the inner plane of the lower cylinder cover 3 through a bottom plate 54 in a threaded manner, and the downward action of the pneumatic actuating mechanism is buffered and damped through the matching of the second buffer devices 8 and the lower surface of the piston 4.
As shown in fig. 1, a plurality of upper contact grooves 6 are further horizontally embedded in the upper surface of the piston 4 at positions corresponding to each first buffer device 5, and each upper contact groove 6 is matched with the rubber pad 57 corresponding to the first buffer device 5; the upper end of each first buffer device 5 is respectively abutted and contacted in the corresponding upper contact groove 6 of the piston 4 through a rubber pad 57, and the pneumatic actuating mechanism is buffered and damped to move upwards; the upper contact groove 6 is arranged, so that the first buffer device 5 can be ensured to be stable in the buffer action.
As shown in fig. 1, a plurality of lower contact grooves 7 are further horizontally embedded in the corresponding positions of the lower surface of the piston 4 corresponding to each second buffer device 8, and each lower contact groove 7 is matched with the rubber pad 57 corresponding to the second buffer device 8; the upper end of each second buffer device 8 is respectively abutted and contacted in the corresponding lower contact groove 7 of the piston 4 through a rubber pad 57, and the downward action of the pneumatic actuating mechanism is buffered and damped; according to the utility model, the lower contact groove 7 is arranged, so that the second buffer device 8 can be ensured to be stable in the buffer action.
The working principle of the utility model is as follows:
(1) when the pneumatic actuator moves upwards, the upper contact groove 6 on the upper surface of the piston 4 is contacted with the rubber pad 57 in the first buffer device 5 and then continues to move upwards, at the moment, the buffer spring 55 is compressed under force, the resistance of the piston 4 moving upwards is continuously increased by the reaction force of the buffer spring 55, the speed is gradually reduced, and therefore the pneumatic actuator moves upwards to perform buffering and shock absorption;
(2) when the pneumatic actuator moves downwards, the lower contact groove 7 on the lower surface of the piston 4 is contacted with the rubber pad 57 in the second buffer device 8 and then continues to move downwards, at the moment, the buffer spring 55 is compressed under force, the resistance of the downward movement of the piston 4 is continuously increased by the reaction force of the buffer spring 55, the speed is gradually reduced, and therefore the downward movement of the pneumatic actuator is buffered, damped and reduced
The utility model has the beneficial effects that:
(1) the pneumatic actuating mechanism is simple in structure and reasonable in design, and the plurality of first buffer devices 5 and the plurality of second buffer devices 8 are adopted to respectively buffer and damp the upward action and the downward action of the pneumatic actuating mechanism, so that the pneumatic actuating mechanism has a spring buffer function at a stroke starting point and a stroke ending point, and can be used in occasions of quick and frequent actions;
(2) the buffering strokes of the first buffering device 5 and the second buffering device 8 are accurate and controllable, and the buffering strokes are small, so that the response speed of the pneumatic actuating mechanism is not influenced;
(3) the first buffer device 5 and the second buffer device 8 are arranged in the pneumatic actuating mechanism, are not easy to rust or corrode due to environmental influence, have high stability, adopt a modular design, and have simple structure, easy replacement, small installation space and easy maintenance;
(4) the utility model does not need to additionally add special control accessories, and can greatly reduce the accessory configuration cost generated by other buffer structure forms.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.
Claims (6)
1. A pneumatic actuator with a buffering effect comprises a piston type pneumatic actuator, wherein the piston type pneumatic actuator comprises a cylinder body, an upper cylinder cover, a lower cylinder cover and a piston; the method is characterized in that: the device also comprises a first buffer device and a second buffer device; a plurality of first buffer devices are uniformly and vertically arranged on the inner plane of the upper cylinder cover along the circumferential direction, and each first buffer device comprises a buffer frame, a rubber pad, a pressing plate, a supporting rod, a fixing plate, a bottom plate and a buffer spring; each buffer frame is of a horizontally arranged hollow cuboid structure, fixing plates are horizontally and symmetrically welded at the upper positions of the left side and the right side of the buffer frame, the upper surface of each fixing plate is coplanar with the upper surface of the corresponding buffer frame, and rubber pads are horizontally attached and fixedly arranged on the upper surfaces of the fixing plates and the buffer frame respectively; a pressing plate is horizontally arranged in the middle of the inside of each buffer frame, each pressing plate is of a rectangular structure matched with the inside of the corresponding buffer frame, and the peripheral sides of the pressing plates are respectively abutted and attached to the inner side walls of the corresponding buffer frames; a plurality of buffer springs are uniformly and vertically arranged on the upper surface of each pressing plate at intervals in a matrix manner, the upper end of each buffer spring is fixedly connected with the inner top surface of the corresponding buffer frame, and the lower end of each buffer spring is fixedly connected with the upper surface of the corresponding pressing plate; supporting rods are also vertically and symmetrically arranged at four right angles of the lower surface of each pressing plate, the upper end of each supporting rod is fixedly connected with the corresponding pressing plate, the lower end of each supporting rod vertically extends downwards to form the lower surface of the corresponding buffering frame, each supporting rod is vertically and vertically slidably connected with the corresponding buffering frame, and the lower end of each supporting rod is fixedly connected with the upper surface of the corresponding bottom plate which is horizontally arranged; the upper end of each first buffer device is respectively abutted against and contacted with the upper surface of the piston through a rubber pad, the lower end of each first buffer device is respectively screwed and fixed with the inner plane of the upper cylinder cover through a bottom plate, and the upward action of the pneumatic actuating mechanism is buffered and damped through the matching of the first buffer devices and the upper surface of the piston;
a plurality of second buffer devices are uniformly and vertically arranged on the inner plane of the lower cylinder cover along the circumferential direction, and the structure of each second buffer device is the same as that of each first buffer device; the upper end of each second buffer device is in abutting contact with the lower surface of the piston through a rubber pad, the lower end of each second buffer device is fixed with the inner plane of the lower cylinder cover through a bottom plate in a threaded manner, and the downward movement of the pneumatic actuating mechanism is buffered and damped through the matching of the second buffer devices and the lower surface of the piston.
2. A pneumatic actuator having a damping effect according to claim 1, wherein: the maximum stroke of the upward movement buffering of each first buffering device is 2-5 mm.
3. A pneumatic actuator having a damping effect according to claim 1, wherein: the maximum stroke of the downward movement buffering of each second buffering device is 2-5 mm.
4. A pneumatic actuator having a damping effect according to claim 1, wherein: and the pre-tightening load of the buffer spring in each of the first buffer device and the second buffer device is 0.02-0.05 times of the theoretical output torque of the whole pneumatic actuating mechanism.
5. A pneumatic actuator having a damping effect according to claim 1, wherein: a plurality of upper contact grooves are horizontally embedded in the corresponding positions of the upper surface of the piston, which are opposite to the first buffer devices, respectively, and each upper contact groove is matched with a rubber pad corresponding to the first buffer device; the upper end of each first buffer device is abutted and contacted in the corresponding upper contact groove of the piston through a rubber pad respectively, and the pneumatic actuating mechanism is buffered and damped in the upward action.
6. A pneumatic actuator having a damping effect according to claim 1, wherein: a plurality of lower contact grooves are horizontally embedded in the corresponding positions of the lower surface of the piston, which correspond to the second buffer devices, and each lower contact groove is matched with a rubber pad corresponding to the second buffer device; the upper end of each second buffer device is respectively abutted and contacted in the corresponding lower contact groove of the piston through a rubber pad, and the downward action of the pneumatic actuating mechanism is buffered and damped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121389225.2U CN216382779U (en) | 2021-06-22 | 2021-06-22 | Pneumatic actuator with buffering effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121389225.2U CN216382779U (en) | 2021-06-22 | 2021-06-22 | Pneumatic actuator with buffering effect |
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| CN216382779U true CN216382779U (en) | 2022-04-26 |
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| CN202121389225.2U Active CN216382779U (en) | 2021-06-22 | 2021-06-22 | Pneumatic actuator with buffering effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776832A (en) * | 2022-05-16 | 2022-07-22 | 谷微半导体科技(江苏)有限公司 | Diaphragm valve with balance effect and manufacturing method thereof |
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2021
- 2021-06-22 CN CN202121389225.2U patent/CN216382779U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776832A (en) * | 2022-05-16 | 2022-07-22 | 谷微半导体科技(江苏)有限公司 | Diaphragm valve with balance effect and manufacturing method thereof |
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