CN219994519U - Electric actuator - Google Patents
Electric actuator Download PDFInfo
- Publication number
- CN219994519U CN219994519U CN202321319523.3U CN202321319523U CN219994519U CN 219994519 U CN219994519 U CN 219994519U CN 202321319523 U CN202321319523 U CN 202321319523U CN 219994519 U CN219994519 U CN 219994519U
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- China
- Prior art keywords
- worm
- shaft
- cover plate
- electric actuator
- mounting base
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- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 230000000007 visual effect Effects 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 3
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
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Abstract
The utility model discloses an electric actuator, comprising: the device comprises a mounting base, wherein a servo motor and a secondary speed reducer which are mutually driven are arranged on the mounting base, an execution shaft is arranged on the bottom of the mounting base in a penetrating manner, the execution shaft is in transmission with the secondary speed reducer, a worm is arranged on the mounting base in a penetrating manner, a front cover plate and a rear cover plate are arranged on the mounting base in a penetrating manner, shaft sleeves are arranged on the inner sides of the front cover plate and the rear cover plate, the rear end of the worm is inserted into the rear shaft sleeves, the front end of the worm is arranged in the front shaft sleeves in a penetrating manner, the front end of the worm passes through the front cover plate in a penetrating manner, the worm can slide back and forth in the two shaft sleeves, a worm wheel is fixedly sleeved on the outer side of the execution shaft in a meshed manner, the worm and the worm wheel are in meshed transmission, the worm can be separated from the worm wheel after rotating backwards, a clamping joint is arranged on the front end of the worm, an annular positioning groove is arranged on the side wall of the front part of the worm, a self-locking type indexing pin is connected on one side of the front cover plate in a threaded manner, and a pin of the self-locking type indexing pin can transversely pass through the annular positioning groove. The electric actuator has high reliability and simple structure.
Description
Technical Field
The utility model relates to the field of actuators of valves, in particular to an electric actuator.
Background
The electric actuator is used for driving the valve to open and close, is provided with the actuating shaft that is used for interfacing with the operating shaft of load valve in the electric actuator, can control the opening and closing of load valve after the actuating shaft drive operating shaft is rotatory, is provided with electric drive mechanism and manual actuating mechanism that is used for driving the actuating shaft rotation in the electric actuator, and electric drive mechanism generally includes: a motor and a decelerator; the electric driving mechanism and the manual driving mechanism are driven by the clutch to rotate with the actuating shaft, and when the clutch is separated, the manual driving mechanism can drive the actuating shaft to rotate and when the clutch is engaged, the electric driving mechanism can drive the actuating shaft to rotate. The clutch in the existing electric actuator is complex in structure, and the clutch is easy to cause problems, so that the reliability of the electric actuator is poor.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: an electric actuator with high reliability and simple structure will be provided.
In order to solve the problems, the utility model adopts the following technical scheme: an electric actuator, comprising: mounting base, its characterized in that: the installation base is provided with a vertically arranged servo motor and a vertically arranged secondary speed reducer, the servo motor and the secondary speed reducer are transmitted through a transmission mechanism, the bottom of the installation base is provided with a vertically arranged execution shaft which is used for being in butt joint with an operation shaft of a load valve, the execution shaft is in joint transmission with an output shaft at the bottom of the secondary speed reducer, the installation base is provided with a worm which is arranged in a front-back trend, the worm is positioned below the servo motor, the installation base at the front end of the worm is provided with a front cover plate, the installation base at the rear end of the worm is provided with a rear cover plate, the inner sides of the front cover plate and the rear cover plate are respectively provided with a shaft sleeve, the rear end of the worm is inserted into the shaft sleeve at the rear side, the rear cover plate can carry out rear limit on the worm, the front end of the worm is penetrated into the shaft sleeve at the front side, the front end of the worm penetrates through the front cover plate, the worm is rotatably arranged on the mounting base through the two shaft sleeves, the worm can slide back and forth in the two shaft sleeves, a worm wheel is fixedly sleeved at the outer side of the execution shaft, the worm and the worm wheel are in meshed transmission, the worm can be separated from the worm wheel after moving backwards in rotation, a clamping joint for being clamped with a manual rotary handle is arranged at the front end of the worm, an annular positioning groove is formed in the side wall of the front part of the worm, the annular positioning groove is positioned in the front cover plate, a self-locking indexing pin is connected with one side of the front cover plate in a threaded manner, and a pin column of the self-locking indexing pin can transversely penetrate through the annular positioning groove, so that the self-locking indexing pin can position the worm back and forth, but the rotation of the worm is not hindered; after the worm rotates and moves backwards to be separated from the worm wheel, the pin post of the self-locking indexing pin can be transversely blocked on the front end of the worm, so that the worm cannot move forwards.
Further, an electric actuator as described above, wherein: a rotary shaft is arranged in a penetrating mode, a mounting block is fixed on the mounting base, the middle of the rotary shaft movably penetrates through the mounting block, a supporting cover is detachably fixed at the bottom of the mounting base, a positioning groove is formed in the supporting cover, the lower end of the rotary shaft is movably inserted into the positioning groove, the supporting cover can support the rotary shaft, the positioning groove can position the lower end of the rotary shaft, a large gear is sleeved on the executing shaft, a small gear is sleeved on the rotary shaft, the large gear and the small gear are in meshed transmission, the executing shaft can drive the rotary shaft to rotate, a mounting column is arranged on the mounting block, a mounting plate is locked at the top of the mounting column, a potentiometer is mounted on the mounting plate, an input gear is fixed on an input shaft of the potentiometer, a transmission gear is fixed on the rotary shaft, the transmission gear and the input gear are in meshed transmission, the input shaft of the potentiometer can rotate along with the executing shaft, accordingly the potentiometer can detect the opening of a load valve, two cams are further fixed on the rotary shaft, two cams are sleeved on the rotary shaft, when the two cams are in meshed transmission, and the two travel switches are completely opened and the two travel switches are completely triggered when the two travel switches are arranged on the mounting block, and the two travel switches are completely opened, and the travel switches are completely triggered when the two travel switches are completely opened.
Further, an electric actuator as described above, wherein: the upper cover of the mounting base is covered with a protective cover, the servo motor, the secondary speed reducer, the mounting block and the rotating shaft are positioned in the protective cover, a visual window is formed in the top of the protective cover, a transparent plate is covered on the visual window, a pointer is arranged on the transparent plate, the rotating shaft is positioned below the visual window, a circular plate is fixed at the top of the rotating shaft, scales for marking the opening of the load valve are arranged on the circular plate, and the pointer on the transparent plate can read the scales on the circular plate.
Further, an electric actuator as described above, wherein: the top ends of the servo motor and the secondary speed reducer are fixed by a fixed plate.
Further, an electric actuator as described above, wherein: the structure of the transmission mechanism is as follows: an output shaft at the top of the servo motor and an input shaft at the top of the secondary speed reducer are both fixedly provided with a synchronous belt wheel, and the two synchronous belt wheels are mutually driven through a synchronous belt.
The utility model has the advantages that: the electric actuator is simple and reliable in structure, a clutch with a complex structure is abandoned, the reliability of the electric actuator is greatly improved, the worm is arranged to be capable of sliding back and forth and then separating from the worm wheel, and when the electric driving mechanism stops working, the executing shaft can be driven to rotate by manually driving the worm to rotate after the worm is meshed with the worm wheel only by moving the worm forward.
Drawings
Fig. 1 is a schematic perspective view of an electric actuator according to the present utility model.
Fig. 2 is a schematic perspective view of another view of an electric actuator according to the present utility model.
Fig. 3 is a schematic perspective view of an electric actuator according to the present utility model from one perspective after removing the protective cover and the mounting base.
Fig. 4 is a schematic perspective view of another view of the electric actuator according to the present utility model with the protective cover and the mounting base removed.
Detailed Description
The utility model is described in further detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1, 2, 3, and 4, an electric actuator includes: the device comprises a mounting base 1, wherein a servo motor 2 and a secondary speed reducer 3 which are vertically arranged are arranged on the mounting base 1, the servo motor 2 and the secondary speed reducer 3 are transmitted through a transmission mechanism, an execution shaft 4 which is vertically arranged and is used for being in butt joint with an operation shaft of a load valve is arranged on the bottom of the mounting base 1 in a penetrating way, the execution shaft 4 is in joint transmission with an output shaft at the bottom of the secondary speed reducer 3, a worm 5 which is arranged in a front-back trend is arranged on the mounting base 1 in a penetrating way, the worm 5 is positioned below the servo motor 2, a front cover plate 6 is arranged on the mounting base 1 at the front end of the worm 5, a rear cover plate 7 is arranged on the mounting base 1 at the rear end of the worm 5, shaft sleeves are respectively arranged on the inner sides of the front cover plate 6 and the rear cover plate 7, the rear end of the worm 5 is inserted into the shaft sleeves at the rear side, the rear cover plate 7 can carry out rear limit on the worm 5, the front end of the worm 5 is penetrated in a shaft sleeve at the front side, the front end of the worm 5 forwards penetrates through a front cover plate 6, the worm 5 is rotatably arranged on a mounting base 1 through two shaft sleeves, the worm 5 can slide forwards and backwards in the two shaft sleeves, a worm wheel 8 is sleeved and fixed at the outer side of an execution shaft 4, the worm 5 and the worm wheel 8 are meshed and driven, the worm 5 can be separated from the worm wheel 8 after rotating backwards, a clamping head 9 for clamping a manual rotating handle is arranged at the front end of the worm 5, an annular positioning groove 10 is arranged on the side wall of the front part of the worm 5, the annular positioning groove 10 is positioned in the front cover plate 6, a self-locking indexing pin 11 is connected on one side of the front cover plate 6 in a threaded manner, a pin column of the self-locking indexing pin 11 transversely penetrates through the annular positioning groove 10, so that the self-locking indexing pin 11 can position the worm 5 forwards and backwards, but does not interfere with the rotation of the worm 5; after the worm 5 rotates and moves backwards to be separated from the worm wheel 8, the pin post of the self-locking indexing pin 11 can be transversely blocked on the front end of the worm 5, so that the worm 5 cannot move forwards.
The electric drive mechanism of the electric actuator in the present embodiment includes: a servo motor and a secondary speed reducer 3; the manual driving mechanism includes: worm 5, worm wheel 6.
When the electric driving mechanism stops working and the valve needs to be manually opened and closed, the pin of the self-locking indexing pin 11 is pulled out, the manual rotary handle is clamped with the clamping joint 9 on the front end of the worm 5, then the manual rotary handle is used for driving the worm 5 to move forwards by a worker, the worm 5 is rotated to enable the worm 5 to be meshed with the worm wheel 8, the self-locking indexing pin 11 is loosened after the worm 5 is in place, the pin of the self-locking indexing pin 11 transversely passes through the annular positioning groove 10, so that the worm 5 can be positioned forwards and backwards, but the worm 5 is not blocked from rotating, then the manual rotary handle is rotated by the worker to enable the worm 5 to drive the worm wheel 8 to rotate, and the executing shaft 4 can be manually driven to rotate.
In this embodiment, a rotating shaft 12 is penetrated in the installation base 1, an installation block 13 is fixed on the installation base 1, the middle part of the rotating shaft 12 movably passes through the installation block 13, a supporting cover 14 is detachably fixed at the bottom of the installation base 1, a positioning groove is arranged on the supporting cover 14, the lower end of the rotating shaft 12 is movably inserted into the positioning groove, the supporting cover 14 can support the rotating shaft 12, the positioning groove can position the lower end of the rotating shaft 12, a large gear 15 is sleeved on the executing shaft 4, a small gear 16 is sleeved on the rotating shaft 12, the large gear 15 and the small gear 16 are meshed and transmitted, the executing shaft 4 can drive the rotating shaft 12 to rotate, a mounting post 17 is arranged on the installation block 13, a mounting piece 18 is locked at the top of the mounting post 17, a potentiometer 19 is arranged on the mounting piece 18, an input gear 20 is fixed on the input shaft of the potentiometer 19, a transmission gear 21 is fixed on the rotating shaft 12, the transmission gear 21 and the input gear 20 are meshed and transmitted with each other, when the rotating shaft 4 is completely driven by the executing motor 23, the two cams 23 are triggered to complete, and when the two stroke-position switches 23 are completely triggered, the stroke of the two stroke-position switches 23 are completely triggered, and the stroke of the stroke switches are completely triggered, and the stroke of the valve is controlled to be opened, and the stroke of the valve is controlled to be completely, and the stroke of the stroke switches is controlled.
The installation base 1 is covered with a protective cover 24, the servo motor 2, the secondary speed reducer 3, the installation block 13 and the rotating shaft 12 are positioned in the protective cover 24, a visual window is formed in the top of the protective cover 24, a transparent plate 25 is covered on the visual window, a pointer is arranged on the transparent plate 25, the rotating shaft 12 is positioned below the visual window, a circular plate 26 is fixed on the top of the rotating shaft 12, a scale for marking the opening of a load valve is arranged on the circular plate 26, and the pointer on the transparent plate 25 can read the scale on the circular plate 26, so that the valve opening is observed on site in real time by workers.
The top ends of the servo motor 2 and the secondary speed reducer 3 are fixed through a fixing plate 27, so that the actuator can be more stable after the arrangement.
The structure of the transmission mechanism is as follows: the output shaft at the top of the servo motor 2 and the input shaft at the top of the secondary speed reducer 3 are both fixedly provided with a synchronous pulley 28, and the two synchronous pulleys 28 are mutually driven by a synchronous belt 29.
Claims (5)
1. An electric actuator, comprising: mounting base, its characterized in that: the installation base is provided with a vertically arranged servo motor and a vertically arranged secondary speed reducer, the servo motor and the secondary speed reducer are transmitted through a transmission mechanism, the bottom of the installation base is provided with a vertically arranged execution shaft which is used for being in butt joint with an operation shaft of a load valve, the execution shaft is in joint transmission with an output shaft at the bottom of the secondary speed reducer, the installation base is provided with a worm which is arranged in a front-back trend, the worm is positioned below the servo motor, the installation base at the front end of the worm is provided with a front cover plate, the installation base at the rear end of the worm is provided with a rear cover plate, the inner sides of the front cover plate and the rear cover plate are respectively provided with a shaft sleeve, the rear end of the worm is inserted into the shaft sleeve at the rear side, the rear cover plate can carry out rear limit on the worm, the front end of the worm is penetrated into the shaft sleeve at the front side, the front end of the worm penetrates through the front cover plate, the worm is rotatably arranged on the mounting base through the two shaft sleeves, the worm can slide back and forth in the two shaft sleeves, a worm wheel is fixedly sleeved at the outer side of the execution shaft, the worm and the worm wheel are in meshed transmission, the worm can be separated from the worm wheel after moving backwards in rotation, a clamping joint for being clamped with a manual rotary handle is arranged at the front end of the worm, an annular positioning groove is formed in the side wall of the front part of the worm, the annular positioning groove is positioned in the front cover plate, a self-locking indexing pin is connected with one side of the front cover plate in a threaded manner, and a pin column of the self-locking indexing pin can transversely penetrate through the annular positioning groove, so that the self-locking indexing pin can position the worm back and forth, but the rotation of the worm is not hindered; after the worm rotates and moves backwards to be separated from the worm wheel, the pin post of the self-locking indexing pin can be transversely blocked on the front end of the worm, so that the worm cannot move forwards.
2. An electric actuator as defined in claim 1, wherein: a rotary shaft is arranged in a penetrating mode, a mounting block is fixed on the mounting base, the middle of the rotary shaft movably penetrates through the mounting block, a supporting cover is detachably fixed at the bottom of the mounting base, a positioning groove is formed in the supporting cover, the lower end of the rotary shaft is movably inserted into the positioning groove, the supporting cover can support the rotary shaft, the positioning groove can position the lower end of the rotary shaft, a large gear is sleeved on the executing shaft, a small gear is sleeved on the rotary shaft, the large gear and the small gear are in meshed transmission, the executing shaft can drive the rotary shaft to rotate, a mounting column is arranged on the mounting block, a mounting plate is locked at the top of the mounting column, a potentiometer is mounted on the mounting plate, an input gear is fixed on an input shaft of the potentiometer, a transmission gear is fixed on the rotary shaft, the transmission gear and the input gear are in meshed transmission, the input shaft of the potentiometer can rotate along with the executing shaft, accordingly the potentiometer can detect the opening of a load valve, two cams are further fixed on the rotary shaft, two cams are sleeved on the rotary shaft, when the two cams are in meshed transmission, and the two travel switches are completely opened and the two travel switches are completely triggered when the two travel switches are arranged on the mounting block, and the two travel switches are completely opened, and the travel switches are completely triggered when the two travel switches are completely opened.
3. An electric actuator according to claim 2, wherein: the upper cover of the mounting base is covered with a protective cover, the servo motor, the secondary speed reducer, the mounting block and the rotating shaft are positioned in the protective cover, a visual window is formed in the top of the protective cover, a transparent plate is covered on the visual window, a pointer is arranged on the transparent plate, the rotating shaft is positioned below the visual window, a circular plate is fixed at the top of the rotating shaft, scales for marking the opening of the load valve are arranged on the circular plate, and the pointer on the transparent plate can read the scales on the circular plate.
4. An electric actuator according to claim 1, 2 or 3, wherein: the top ends of the servo motor and the secondary speed reducer are fixed by a fixed plate.
5. An electric actuator according to claim 1, 2 or 3, wherein: the structure of the transmission mechanism is as follows: an output shaft at the top of the servo motor and an input shaft at the top of the secondary speed reducer are both fixedly provided with a synchronous belt wheel, and the two synchronous belt wheels are mutually driven through a synchronous belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321319523.3U CN219994519U (en) | 2023-05-29 | 2023-05-29 | Electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321319523.3U CN219994519U (en) | 2023-05-29 | 2023-05-29 | Electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219994519U true CN219994519U (en) | 2023-11-10 |
Family
ID=88617438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321319523.3U Active CN219994519U (en) | 2023-05-29 | 2023-05-29 | Electric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219994519U (en) |
-
2023
- 2023-05-29 CN CN202321319523.3U patent/CN219994519U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |