CN103244737A - Manual and electric switching mechanism for valve actuator - Google Patents
Manual and electric switching mechanism for valve actuator Download PDFInfo
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- CN103244737A CN103244737A CN2013101906108A CN201310190610A CN103244737A CN 103244737 A CN103244737 A CN 103244737A CN 2013101906108 A CN2013101906108 A CN 2013101906108A CN 201310190610 A CN201310190610 A CN 201310190610A CN 103244737 A CN103244737 A CN 103244737A
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- clutch
- valve actuator
- worm gear
- switching mechanism
- output shaft
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Abstract
The invention provides a manual and electric switching mechanism for a valve actuator. The manual and electric switching mechanism for the valve actuator comprises a hand wheel, a bearing, an output shaft, a clutch, a worm gear and a switching deice, wherein the hand wheel is in turning fit with the output shaft through the bearing, the worm gear is in turning fit with the output shaft, the clutch and the output shaft are both provided with splines which are used for enabling the clutch to slide along the output shaft axially and rotate with the output shaft synchronously, and grasping claws for being connected with the hand wheel or the worm gear are arranged at two axial ends of the clutch respectively. According to the manual and electric switching mechanism for the valve actuator, a switching handle is pulled upward so as to drive a sliding shaft, a flexible shaft and a pin shaft to move upward sequentially, a switching block rotates to push the clutch to move upward to be separated from the worm gear, an upright rod is kept upright on the end face of the worm gear under the effect of tension force of a tension spring, at the moment, the grasping claws of the clutch are meshed with the hand wheel, and the valve actuator is in a manual state. Compared with an existing switching mechanism, the manual and electric switching mechanism for the valve actuator has the advantages of being compact in structure, light in weight and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of manual and electronic switching mechanism, relate in particular to a kind of manual and electronic switching mechanism for valve actuator.
Background technique
Valve actuator is very important field apparatus in the industrial process control system, and its energy is taken conveniently, Installation and Debugging are simple, obtains using comparatively widely at industrial departments such as electric power, metallurgy, oil, chemical industry.Valve actuator generally is made of motor, main drive gear, range controlling mechanism, torque limit mechanism, handwheel, manual/electric switching mechanism etc.The manual/electric switching mechanism is by the function branch, can be divided into full manual switchover, automatically switch and three kinds of modes of semi-automatic switching.Full manual switching mechanism, the mutual switching between namely manual and electronic relies on manually fully to be finished, and this switching mechanism is very unfavorable for the proper functioning of Electric actuator, is progressively eliminated.Full-automatic switching mechanism, namely manual and electronic between mutually switching all finish automatically, this switching mechanism is because its structural limitations is used less.The semi-automatic switcher structure, be electronicly to be finished by manpower to manual switching, and manually finish by automatically reseting to electronic switching, compare with full-automatic switching mechanism with full manual switching mechanism, their advantages have separately been kept, eliminated the shortcoming of the two, on the valve actuator that is widely used in producing at present.Existing switching mechanism mostly adopts to be pulled handle cam is rotated, and carries out manually arrive electronic switching thereby drive the mode that the frame type shift fork promotes clutch, this switching mechanism because of structure greatly, shortcoming such as Heavy Weight is restricted in commercial Application.The problems referred to above are the problems that should pay attention to and solve in the design of the manual/electric switching mechanism of valve actuator and production process.
Summary of the invention
The purpose of this invention is to provide a kind of manual and electronic switching mechanism for valve actuator and solve the problem that shortcomings such as existing switching mechanism structure is big, Heavy Weight are restricted in commercial Application.
Technical solution of the present invention is:
A kind of manual and electronic switching mechanism for valve actuator, comprise handwheel, bearing, output shaft, clutch, worm gear and COMM communication, described handwheel forms by bearing and output shaft and is rotatably assorted, described worm gear and output shaft form and are rotatably assorted, described clutch and output shaft are equipped with the spline that endwisely slips and rotate synchronously with output shaft along output shaft for clutch, the axial two ends of described clutch are respectively equipped with for connecting handwheel or grabbing of worm gear and close pawl, described output shaft passes the stage clip that is in pressured state, and the end of described stage clip connects clutch.
Described COMM communication comprises the switching handle, connecting pin, sliding axle, flexible axle, bearing pin, up-and-down rod, handoff block, circular shaft and extension spring, described switching handle and connecting pin form interference fit, the upper end of described sliding axle and connecting pin form and are rotatably assorted, the lower end of described sliding axle connects an end of flexible axle, the other end of described flexible axle passes described bearing pin and is connected with block, described flexible axle and bearing pin form Spielpassung, one end of described bearing pin passes described handoff block, the other end of described bearing pin connects up-and-down rod, be provided with the extension spring that is in extended state between described bearing pin and handoff block, the two ends of described extension spring connect bearing pin and handoff block respectively, described bearing pin and handoff block, circular shaft and handoff block, circular shaft and casing all form and are rotatably assorted.
Further improve and be: the sidewall of described handoff block is provided with for promoting the axially movable projection of clutch, and described projection is located between handoff block and clutch, projection contact clutch.
Further improve and be: described handwheel is connected on the casing by the flexible axle core, is provided with seal ring between described handwheel and casing.
Further improve and be: the switching handle of described switching handle for adopting working of plastics to make.
Further improve and be: described sliding axle and casing form and are slidingly matched, and are provided with the O RunddichtringO between described sliding axle and casing.
Further improve and be: be symmetrical arranged on the described worm gear and be useful on the pin that closes the pawl engagement with grabbing of clutch.
Further improve and be: upwards pull the switching handle, thereby driving sliding axle, flexible axle, bearing pin successively moves upward, handoff block is rotated to promote to move on the clutch with worm gear and is thrown off, up-and-down rod is being kept upright under the tension spring tension effect on the worm gear end face, clutch closes pawl engagement handwheel by grabbing, and valve actuator is in manual state.
Further improve being that worm gear rotates during motoring condition, up-and-down rod is toppled over because of the frictional force between upright worm and wheel, and clutch closes pawl engagement worm gear by grabbing under the effect of stage clip, and valve actuator is in motoring condition.
The present invention relates to a kind of manual and electronic switching mechanism for valve actuator, compare existing switching mechanism, have compact structure, in light weight, advantage of low manufacturing cost.When the state that carries out valve actuator switches, upwards pull the switching handle, thereby driving sliding axle, flexible axle, bearing pin successively moves upward, handoff block is rotated and is promoted to move with worm gear on the clutch and throws off, and up-and-down rod is being kept upright under the tension spring tension effect on the worm gear end face, clutch was grabbed and was closed pawl engagement handwheel this moment, and valve actuator is in manual state.Worm gear rotates during motoring condition, and up-and-down rod is toppled over because of the frictional force between upright worm and wheel, and clutch closes pawl engagement worm gear by grabbing under the effect of stage clip, and valve actuator is in motoring condition, realizes that the state of valve actuator switches.
The invention has the beneficial effects as follows: a kind of manual and electronic switching mechanism for valve actuator of the present invention, when the state that carries out valve actuator switches, upwards pull the switching handle, thereby driving sliding axle, flexible axle, bearing pin successively moves upward, meanwhile handoff block is rotated and is promoted to move with worm gear on the clutch and throws off, and up-and-down rod is being kept upright under the tension spring tension effect on the worm gear end face, and clutch was grabbed and closed pawl engagement handwheel this moment, and valve actuator is in manual state.Worm gear rotates during motoring condition, and up-and-down rod is toppled over because of the frictional force between upright worm and wheel, and clutch closes pawl engagement worm gear by grabbing under the effect of stage clip, and valve actuator is in motoring condition, realizes that the state of valve actuator switches.This kind is used for the manual and electronic switching mechanism of valve actuator, compares existing switching mechanism, has compact structure, in light weight, advantage of low manufacturing cost.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 be among Fig. 1 A to the structure connection diagram of handoff block and circular shaft, bearing pin, flexible axle, extension spring;
Fig. 3 be among Fig. 1 B to the structure connection diagram of handoff block and sliding axle, connecting pin;
Fig. 4 is for switching the structural representation of handle among the present invention;
Wherein: the 1-handwheel, the 2-sliding axle, 3-switches handle, 4-connecting pin, the 5-O RunddichtringO, 6-flexible axle, 7-bearing pin, 8-block, the 9-handoff block, 10-up-and-down rod, 11-worm gear, the 12-pin, 13-clutch, 14-stage clip, the 15-casing, 16-flexible axle core, 17-output shaft, the 18-bearing, 19-extension spring, 20-circular shaft.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, present embodiment provides a kind of manual and electronic switching mechanism for valve actuator, comprise handwheel 1, bearing 18, output shaft 17, clutch 13, worm gear 11 and COMM communication, described handwheel 1 forms with output shaft 17 by bearing 18 and is rotatably assorted, described worm gear 11 forms with output shaft 17 and is rotatably assorted, described clutch 13 and output shaft 17 are equipped with the splines that endwisely slip or rotate synchronously with output shaft 17 along output shaft 17 for clutch 13, the axial two ends of described clutch 13 are respectively equipped with for connecting handwheel 1 or grabbing of worm gear 11 and close pawl, described output shaft 17 passes the stage clip 14 that is in pressured state, and the end of described stage clip 14 connects clutch 13.
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, described COMM communication comprises sliding axle 2, switch handle 3, connecting pin 4, flexible axle 6, bearing pin 7, handoff block 9, up-and-down rod 10, extension spring 19 and circular shaft 20, described switching handle 3 forms interference fit with connecting pin 4, the upper end of described sliding axle 2 and connecting pin 4 form and are rotatably assorted, the lower end of described sliding axle 2 connects an end of flexible axle 6, the other end of described flexible axle 6 passes described bearing pin 7 and is connected with block 8, described flexible axle 6 forms Spielpassung with bearing pin 7, one end of described bearing pin 7 passes described handoff block 9, the other end of described bearing pin 7 connects up-and-down rod 10,9 of described bearing pin 7 and handoff block are provided with the extension spring 19 that is in extended state, the two ends of described extension spring 19 are 4 of connecting pins and handoff block 9 respectively, described bearing pin 7 and handoff block 9, circular shaft 20 and handoff block 9, circular shaft 20 all forms with casing 15 and is rotatably assorted.The sidewall of described handoff block 9 is provided with for promoting clutch 13 axially movable projectioies, and described projection is located at handoff block 9 and 13 on clutch, and projection contacts clutch 13.Described handwheel 1 is connected on the casing 15 by flexible axle core 16, and 15 of described handwheel 1 and casings are provided with seal ring.The switching handle 3 of described switching handle 3 for adopting working of plastics to make.Described sliding axle 2 forms with casing 15 and is slidingly matched, and 15 of described sliding axle 2 and casings are provided with O RunddichtringO 5.Be symmetrical arranged on the described worm gear 11 and be useful on the pin 12 that closes the pawl engagement with grabbing of clutch.
A kind of manual and electronic switching mechanism for valve actuator of present embodiment is compared existing switching mechanism, has compact structure, in light weight, advantage of low manufacturing cost.When the state that carries out valve actuator switches, upwards pull and switch handle 3, thereby driving sliding axle 2, flexible axle 6, bearing pin 7 successively moves upward, meanwhile handoff block 9 is rotated and is promoted to move on the clutch 13 with worm gear 11 and throws off, and up-and-down rod 10 is kept upright on worm gear 11 end faces under extension spring 19 pulling force effects, clutch 13 was grabbed and was closed pawl engagement handwheel 1 this moment, and valve actuator is in manual state; Worm gear 11 rotates during motoring condition, up-and-down rod 10 is toppled over because of the frictional force of 11 on up-and-down rod 10 and worm gear, clutch 13 closes pawl engagement worm gear 11 by grabbing under the effect of stage clip 14, valve actuator is in motoring condition, realizes that the state of valve actuator switches.
The beneficial effect of present embodiment is: a kind of manual and electronic switching mechanism for valve actuator of present embodiment, when the state that carries out valve actuator switches, upwards pull the switching handle, handoff block is rotated and is promoted to move with worm gear on the clutch and throws off, and up-and-down rod is being kept upright under the tension spring tension effect on the worm gear end face, clutch was grabbed and was closed pawl engagement handwheel this moment, and valve actuator is in manual state; Worm gear rotates during motoring condition, and up-and-down rod is toppled over because of the frictional force between upright worm and wheel, and clutch closes pawl engagement worm gear by grabbing under the effect of stage clip, and valve actuator is in motoring condition, realizes that the state of valve actuator switches.This kind is used for the manual and electronic switching mechanism of valve actuator, compares existing switching mechanism, has compact structure, in light weight, advantage of low manufacturing cost.
Claims (8)
- One kind be used for valve actuator manually with electronic switching mechanism, it is characterized in that: comprise handwheel (1), bearing (18), output shaft (17), clutch (13), worm gear (11) and COMM communication, described handwheel (1) forms with output shaft (17) by bearing (18) and is rotatably assorted, described worm gear (11) forms with output shaft (17) and is rotatably assorted, described clutch (13) and output shaft (17) are equipped with the spline that endwisely slips and rotate synchronously with output shaft (17) along output shaft (17) for clutch (13), the axial two ends of described clutch (13) are respectively equipped with for connecting handwheel (1) or grabbing of worm gear (11) and close pawl, described output shaft (17) passes the stage clip (14) that is in pressured state, and the end of described stage clip (14) connects clutch (13);Described COMM communication comprises switches handle (3), connecting pin (4), sliding axle (2), flexible axle (6), bearing pin (7), up-and-down rod (10), handoff block (9), circular shaft (20) and extension spring (19), described switching handle (3) forms interference fit with connecting pin (4), the upper end of described sliding axle (2) and connecting pin (4) form and are rotatably assorted, the lower end of described sliding axle (2) connects an end of flexible axle (6), the other end of described flexible axle (6) passes described bearing pin (7) and is connected with block (8), described flexible axle (6) forms Spielpassung with bearing pin (7), one end of described bearing pin (7) passes described handoff block (9), the other end of described bearing pin (7) connects up-and-down rod (10), be provided with the extension spring (19) that is in extended state between described bearing pin (7) and handoff block (9), the two ends of described extension spring (19) are connecting pin (4) axle and handoff block (9) respectively, described bearing pin (7) and handoff block (9), circular shaft (20) and handoff block (9), circular shaft (20) all forms with casing (15) and is rotatably assorted.
- As claimed in claim 1 for valve actuator manually with electronic switching mechanism, it is characterized in that: the sidewall of described handoff block (9) is provided with for promoting the axially movable projection of clutch (13), and described projection is located between handoff block (9) and clutch (13).
- As claimed in claim 1 for valve actuator manually with electronic switching mechanism, it is characterized in that: described handwheel (1) is connected on the casing (15) by flexible axle core (16), is provided with seal ring between described handwheel (1) and casing (15).
- 4. the manual and electronic switching mechanism for valve actuator as claimed in claim 1 is characterized in that: the switching handle (3) of described switching handle (3) for adopting working of plastics to make.
- As claimed in claim 1 for valve actuator manually with electronic switching mechanism, it is characterized in that: described sliding axle (2) forms with casing (15) and is slidingly matched, and is provided with O RunddichtringO (5) between described sliding axle (2) and casing (15).
- 6. as each described manual and electronic switching mechanism for valve actuator of claim 1-5, it is characterized in that: be symmetrical arranged on the described worm gear (11) and be useful on the pin (12) that closes the pawl engagement with grabbing of clutch (13).
- 7. as each described manual and electronic switching mechanism for valve actuator of claim 1-5, it is characterized in that, upwards pull and switch handle (3) and drive sliding axle (2), flexible axle (6), bearing pin (7) successively and move upward, handoff block (9) is rotated to promote to move on the clutch (13) with worm gear (11) and is thrown off, up-and-down rod (10) is being kept upright under extension spring (19) the pulling force effect on worm gear (11) end face, clutch (13) closes pawl engagement handwheel (1) by grabbing, and valve actuator is in manual state.
- 8. as each described manual and electronic switching mechanism for valve actuator of claim 1-5, it is characterized in that, worm gear during motoring condition (11) rotates, up-and-down rod (10) is toppled over because of the frictional force between up-and-down rod (10) and worm gear (11), clutch (13) closes pawl engagement worm gear (11) by grabbing under the effect of stage clip (14), valve actuator is in motoring condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310190610.8A CN103244737B (en) | 2013-05-22 | 2013-05-22 | Manual and electric switching mechanism for valve actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310190610.8A CN103244737B (en) | 2013-05-22 | 2013-05-22 | Manual and electric switching mechanism for valve actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103244737A true CN103244737A (en) | 2013-08-14 |
| CN103244737B CN103244737B (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310190610.8A Expired - Fee Related CN103244737B (en) | 2013-05-22 | 2013-05-22 | Manual and electric switching mechanism for valve actuator |
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| Country | Link |
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| CN (1) | CN103244737B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3239616A (en) * | 1964-05-05 | 1966-03-08 | Crane Co | Valve indicator and limit switch combination |
| US3257866A (en) * | 1963-06-27 | 1966-06-28 | Rotork Eng Co Ltd | Actuating mechanisms, more particularly for valves |
| EP0026614A1 (en) * | 1979-09-28 | 1981-04-08 | Rotork Controls Limited | Actuator with alternative motor or manual drive |
| CN2091393U (en) * | 1991-02-12 | 1991-12-25 | 刘平 | Hand, electric driven switching device of valve electric unit |
| CN2508075Y (en) * | 2001-10-16 | 2002-08-28 | 毛为 | Electric-operated and hand switching mechanism in electric valve executor |
| CN100398892C (en) * | 2003-07-17 | 2008-07-02 | 罗托克控制有限公司 | Drive mechanisms for valve actuators |
| CN201412585Y (en) * | 2009-05-27 | 2010-02-24 | 天津伯思克仪表技术有限公司 | Automatic/manual switching device of electric actuating mechanism |
| CN203248810U (en) * | 2013-05-22 | 2013-10-23 | 中国能建集团装备有限公司南京技术中心 | Manual-electric switching mechanism for valve driving device |
-
2013
- 2013-05-22 CN CN201310190610.8A patent/CN103244737B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3257866A (en) * | 1963-06-27 | 1966-06-28 | Rotork Eng Co Ltd | Actuating mechanisms, more particularly for valves |
| US3239616A (en) * | 1964-05-05 | 1966-03-08 | Crane Co | Valve indicator and limit switch combination |
| EP0026614A1 (en) * | 1979-09-28 | 1981-04-08 | Rotork Controls Limited | Actuator with alternative motor or manual drive |
| CN2091393U (en) * | 1991-02-12 | 1991-12-25 | 刘平 | Hand, electric driven switching device of valve electric unit |
| CN2508075Y (en) * | 2001-10-16 | 2002-08-28 | 毛为 | Electric-operated and hand switching mechanism in electric valve executor |
| CN100398892C (en) * | 2003-07-17 | 2008-07-02 | 罗托克控制有限公司 | Drive mechanisms for valve actuators |
| CN201412585Y (en) * | 2009-05-27 | 2010-02-24 | 天津伯思克仪表技术有限公司 | Automatic/manual switching device of electric actuating mechanism |
| CN203248810U (en) * | 2013-05-22 | 2013-10-23 | 中国能建集团装备有限公司南京技术中心 | Manual-electric switching mechanism for valve driving device |
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| CN103244737B (en) | 2015-01-14 |
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Granted publication date: 20150114 Termination date: 20190522 |