CN210770576U - Double-acting shifting fork type high-pressure pneumatic actuator - Google Patents
Double-acting shifting fork type high-pressure pneumatic actuator Download PDFInfo
- Publication number
- CN210770576U CN210770576U CN201920999637.4U CN201920999637U CN210770576U CN 210770576 U CN210770576 U CN 210770576U CN 201920999637 U CN201920999637 U CN 201920999637U CN 210770576 U CN210770576 U CN 210770576U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston rod
- shifting fork
- pneumatic actuator
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a double-acting shifting fork type high-pressure pneumatic actuator, which comprises a cylinder body, a cylinder, a piston rod, a pin shaft, a slide block, a shifting fork, a transmission shaft and a limit screw; the transmission shaft is longitudinally arranged in the cylinder body, and the left port and the right port of the cylinder body are respectively connected with the air cylinder; a piston rod is arranged in the cylinder, and a limit screw and an air source interface are arranged at the end part of the cylinder; the pin shaft is arranged in the middle of the piston rod, and the sliding block is arranged on the pin shaft; the shifting fork is matched with the sliding block and is matched with the transmission shaft through a key. The structure is compact and simple; the compressed air is used for driving, the switch is quick, the driving cost is low, and the driving air source is easy to obtain; the shifting fork type structure realizes the function of increasing the output torque with the same cylinder diameter; the double-acting structural design avoids the trouble of reducing the reset torque after long-term use; a double-sealing and anti-friction wear-resistant strip is adopted between the piston rod and the cylinder, so that the service life of the actuator is prolonged; the design of adjustable stop screw realizes that executor turned angle is accurate, fixes a position accurately.
Description
Technical Field
The utility model relates to a pneumatic actuator technical field especially relates to a two effect shifting fork formula high pressure pneumatic actuator.
Background
The pneumatic actuator is a device for converting the output signal of the controller into linear displacement of the control valve rod or angular displacement of the valve shaft. The pneumatic actuator provides a pushing or pushing torque for overcoming unbalance forces, valve pressing forces, friction forces and the like, and causing the weighing to change in proportion to the input signal. The pneumatic actuating mechanism uses gas and converts the gas into driving action through the cylinder, is used for driving the valve to a fully open or fully closed position, can accurately enable the valve to move to any position, and is widely applied to petroleum and natural gas, chemical industry, metallurgy, food and other industrial fields with high requirements on the reliability of valve control and driving. The conventional pneumatic actuating mechanism in the market at present is a single-action type actuator, and after the single-action type actuator is used for a long time, a spring is fatigue, so that the problem that the valve cannot be opened or closed due to reduction of reset torque is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a double-acting shifting fork type high-pressure pneumatic actuator.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a double-acting shifting fork type high-pressure pneumatic actuator comprises a cylinder body, a cylinder, a piston rod, a pin shaft, a slide block, a shifting fork, a transmission shaft and a limit screw; the cylinder body is positioned in the middle, the transmission shaft is longitudinally arranged in the cylinder body, the left end port and the right end port of the cylinder body are respectively connected with the air cylinder, and the air cylinder and the cylinder body are fixed through screws; a piston rod is installed in the cylinder, and an O-shaped ring and a wear-resistant strip are arranged between the piston rod and the inner wall of the cylinder; the end part of the cylinder is provided with a limit screw and an air source interface; the pin shaft is arranged in the middle of the piston rod, and the sliding block is arranged on the pin shaft; the shifting fork is matched with the sliding block, and meanwhile, the shifting fork is matched with the transmission shaft through a key.
Preferably, the pin shaft is fixedly matched with the piston rod.
Preferably, the sliding block can rotate freely on the pin shaft.
Preferably, the air source interface is in the form of a 37-degree ball head.
Preferably, the limit screw is rotatably adjustable.
Preferably, the material of the transmission shaft is martensitic stainless steel.
Preferably, the bottom of the transmission shaft is connected with an ISO 5211 connecting disc, and the top of the transmission shaft is connected with a limit switch connecting disc.
The utility model has the advantages that:
the utility model discloses a two effect shifting fork formula high pressure pneumatic actuator mainly used big moment of torsion just opens and close quick 90 rotatory cut-off valve. The air cylinder driving air source adopts compressed air of 5MPa +/-0.3 MPa, and compared with a conventional pneumatic actuator, the pneumatic actuator has the advantages of high air source pressure and larger output torque of the air cylinder with the same caliber; the fork-type structure has a longer arm and a larger output torque than the conventional rack and pinion actuator. Compared with a single-acting actuator, the double-acting type actuator has the advantages that the trouble that the valve cannot be opened and closed due to reduction of the reset torque caused by fatigue of a spring used for a long time is avoided; the driving air source interface adopts a 37-degree ball head type, so that the advantages of quick connection, reliable sealing and the like are achieved; and a wear-resistant strip with double sealing and anti-friction is adopted between the piston rod and the cylinder, so that the service life of the actuator is effectively prolonged. The transmission shaft of the actuator is made of high-strength martensitic stainless steel, and can bear the output of large torque to ensure that the transmission shaft is not deformed after being used for a long time. The actuator is provided with an adjustable limit screw, so that the rotation angle of an output shaft of the actuator can be effectively adjusted, and the phenomenon that the valve is not in place due to the fact that the valve is opened and closed is avoided. The pneumatic actuator solves the problems that the installation of a large-torque valve is troublesome and the occupied space of the actuator is large and the pipeline layout is not facilitated when the conventional actuator is adopted. The actuator is provided with a connecting disc in an ISO 5211 standard, and can be quickly installed and connected with a valve in a standard design. A limit switch connecting disc is designed at the top of the actuator, and the opening and closing state of the valve can be remotely monitored after the limit switch is installed.
Drawings
Fig. 1 is a front cross-sectional view of a double-acting shift fork type high-pressure pneumatic actuator provided by the utility model.
Fig. 2 is a bottom cross-sectional view of the double-acting shift fork type high-pressure pneumatic actuator of the present invention.
In the figure: the device comprises a cylinder body 1, a cylinder 2, a piston rod 3, a pin shaft 4, a sliding block 5, a shifting fork 6, a transmission shaft 7, a key 8, an ISO 5211 connecting disc 9, a limit switch connecting disc 10, an air source interface 11, an O-shaped ring 12, a wear-resistant strip 13, a screw 14 and a limit screw 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1 and 2, a double-acting shifting fork type high-pressure pneumatic actuator mainly comprises a cylinder body 1, a cylinder 2, a piston rod 3, a pin shaft 4, a shifting fork 6, a transmission shaft 7 and a limit screw 15. The concrete structure and the installation mode are as follows: the cylinder body 1 is positioned in the middle, the transmission shaft 7 is longitudinally arranged in the cylinder body 1, the left end port and the right end port of the cylinder body 1 are respectively connected with the air cylinder 2, and the air cylinder 2 and the cylinder body 1 are fixed through screws 14; a piston rod 3 is installed in the cylinder 2, and an O-shaped ring 12 and a wear-resistant strip 13 are arranged between the piston rod 3 and the inner wall of the cylinder 2; the end part of the cylinder 2 is provided with a limit screw 15 and an air source interface 11, and the limit screw 15 can rotate; the pin shaft 4 is arranged in the middle of the piston rod 3 and fixed with the piston rod 3, the sliding block 5 is arranged on the pin shaft 4, the sliding block 5 can freely rotate on the pin shaft 4, the shifting fork 6 is matched with the sliding block 5, and meanwhile, the shifting fork 6 is matched with the transmission shaft 7 through a key 8; the bottom of transmission shaft 7 is connected with ISO 5211 connection pad 9, and the top of transmission shaft 7 is connected with limit switch connection pad 10.
The working principle is as follows: referring to fig. 1 and 2, the utility model discloses a pneumatic actuator adopts the design of two effect shifting forks, and drive air supply gets into cylinder 2 by controlling both sides air source interface 11, promotes 3 rectilinear movement of piston rod, sets up round pin axle 4 in the middle of the piston rod 3, and round pin axle 4 is last to set up free rotation's slider 5, and slider 5 and shift fork 6 cooperate, and shift fork 6 adopts the parallel key closely to cooperate with transmission shaft 7. The thrust generated by the driving air source is transmitted to the shifting fork 6 through the pin shaft 4 and the sliding block 5, the shifting fork 6 drives the transmission shaft 7 to rotate, and the transmission shaft 7 drives the valve to complete opening and closing actions.
To sum up, the utility model discloses a characteristics do: the structure is compact and simple, and the appearance is beautiful; the compressed air is used for driving, the switch is quick, the driving cost is low, and the driving air source is easy to obtain; the driving air source adopts 5MPa +/-0.3 MPa, and the characteristics of small cylinder diameter and large torque of the product are realized; the shifting fork type structure realizes the function of increasing the output torque with the same cylinder diameter; the double-acting structural design avoids the trouble of reducing the reset torque after long-term use; the driving air source interface adopts a 37-degree ball head type, so that the connection is quick and the sealing is reliable; a double-sealing and anti-friction wear-resistant strip is adopted between the piston rod and the cylinder, so that the service life of the actuator is prolonged; the design of the limit screw can be adjusted, so that the actuator can rotate at an accurate angle and can be positioned accurately; the martensite stainless steel transmission shaft is not deformed after long-term use; the connecting disc with the standard design can be quickly connected with a valve with the standard design on the market; the valve switch is provided with a limit switch connecting disc, and a limit switch can be installed to realize remote monitoring of the switch state of the valve.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A double-acting shifting fork type high-pressure pneumatic actuator is characterized by comprising a cylinder body, a cylinder, a piston rod, a pin shaft, a sliding block, a shifting fork, a transmission shaft and a limit screw; the cylinder body is positioned in the middle, the transmission shaft is longitudinally arranged in the cylinder body, the left end port and the right end port of the cylinder body are respectively connected with the air cylinder, and the air cylinder and the cylinder body are fixed through screws; a piston rod is installed in the cylinder, and an O-shaped ring and a wear-resistant strip are arranged between the piston rod and the inner wall of the cylinder; the end part of the cylinder is provided with a limit screw and an air source interface; the pin shaft is arranged in the middle of the piston rod, and the sliding block is arranged on the pin shaft; the shifting fork is matched with the sliding block, and meanwhile, the shifting fork is matched with the transmission shaft through a key.
2. A double acting shift fork high pressure pneumatic actuator as claimed in claim 1 wherein the pin is fixedly engaged with the piston rod.
3. A double acting shift fork high pressure pneumatic actuator as claimed in claim 1, wherein the slide is free to rotate on the pin.
4. A double acting shift fork high pressure pneumatic actuator as claimed in claim 1 wherein the air supply interface is in the form of a 37 ° bulb.
5. A double acting shift fork high pressure pneumatic actuator as claimed in claim 1, wherein the limit screw is rotatably adjustable.
6. A double acting shift fork high pressure pneumatic actuator as claimed in claim 1 wherein the drive shaft is made of martensitic stainless steel.
7. A double acting shift fork high pressure pneumatic actuator as claimed in claim 1 wherein the bottom of the drive shaft is connected to an ISO 5211 connection pad and the top of the drive shaft is connected to a limit switch connection pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920999637.4U CN210770576U (en) | 2019-06-30 | 2019-06-30 | Double-acting shifting fork type high-pressure pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920999637.4U CN210770576U (en) | 2019-06-30 | 2019-06-30 | Double-acting shifting fork type high-pressure pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210770576U true CN210770576U (en) | 2020-06-16 |
Family
ID=71038973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920999637.4U Active CN210770576U (en) | 2019-06-30 | 2019-06-30 | Double-acting shifting fork type high-pressure pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210770576U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188695A (en) * | 2021-03-31 | 2021-07-30 | 江苏兰菱机电科技有限公司 | Dynamometer machine for large-torque pneumatic actuator |
| CN119435806A (en) * | 2024-11-11 | 2025-02-14 | 重庆川仪自动化股份有限公司 | A double-acting pneumatic actuator |
-
2019
- 2019-06-30 CN CN201920999637.4U patent/CN210770576U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188695A (en) * | 2021-03-31 | 2021-07-30 | 江苏兰菱机电科技有限公司 | Dynamometer machine for large-torque pneumatic actuator |
| CN119435806A (en) * | 2024-11-11 | 2025-02-14 | 重庆川仪自动化股份有限公司 | A double-acting pneumatic actuator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210770576U (en) | Double-acting shifting fork type high-pressure pneumatic actuator | |
| CN107588228B (en) | Shifting fork type pneumatic actuator | |
| CN109357068A (en) | Valve actuator and its application method | |
| CN204553405U (en) | A kind of single-action pneumatic executor with handwheel | |
| CN101858458A (en) | A Pneumatic Actuator for Driving a Valve | |
| CN104534153A (en) | Hydraulic control valve opening and closing device for butterfly valve or ball valve | |
| CN204477455U (en) | Hydraulically controlled pneumatic final controlling element | |
| CN201582416U (en) | Pneumatic quick cut-off valve | |
| CN105864497A (en) | Gear-driven seal valve | |
| CN201723825U (en) | Crank link pneumatic actuator | |
| CN203115252U (en) | Shifting-fork-type pneumatic piston actuator | |
| CN204372289U (en) | butterfly valve or ball valve hydraulic control valve opening and closing device | |
| CN104806771A (en) | Pneumatic expansion butterfly valve | |
| CN204717110U (en) | A kind of pneumatic actuator | |
| CN103148222A (en) | Liquid control valve | |
| CN116771931A (en) | A low-torque gas butterfly valve and its control method | |
| CN204372296U (en) | The horizontally loaded type Pneumatic piston actuator of angular stroke control valve | |
| CN209278612U (en) | Valve actuator | |
| CN102537392A (en) | Pilot operated gate valve | |
| CN210290785U (en) | Valve driver with valve position is adjusted | |
| CN203322442U (en) | Shutoff valve driven by electric push rod | |
| CN203322376U (en) | Electrohydraulic control three-way valve easy to seal | |
| CN211288942U (en) | Pneumatic actuator | |
| CN202691234U (en) | DMF manual electric double-link closed valve | |
| CN201526690U (en) | Lead screw gate valve with inlet and outlet pressure balance mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |