CN204176088U - Electric actuator power mechanism - Google Patents
Electric actuator power mechanism Download PDFInfo
- Publication number
- CN204176088U CN204176088U CN201420603375.2U CN201420603375U CN204176088U CN 204176088 U CN204176088 U CN 204176088U CN 201420603375 U CN201420603375 U CN 201420603375U CN 204176088 U CN204176088 U CN 204176088U
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- CN
- China
- Prior art keywords
- limiting stopper
- motor
- rotating shaft
- power mechanism
- electric actuator
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- 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.)
- Expired - Fee Related
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- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a kind of electric actuator power mechanism, aim to provide a kind of not fragile and electric actuator power mechanism that stroke limit is effective, its drip irrigation device is a kind of electric actuator power mechanism, comprise shell, described shell is provided with motor cavity, motor is provided with in described motor cavity, described motor comprises rotating shaft, described rotating shaft one end extends to outside shell, described rotating shaft is provided with adjustment screw thread, described adjustment thread jacket is provided with limiting stopper, described limiting stopper has and the internal thread regulating screw thread to match, described limiting stopper is provided with the chute being parallel to shaft axis, described shell is provided with track near limiting stopper side, described chute and track sliding are dynamically connected, described rotating shaft one end is arranged with spring, described both ends of the spring is connected with outer casing and limiting stopper respectively.The utility model is applicable to electric valve actuator, electronicly opens a sluice gate the product scopes such as final controlling element.
Description
Technical field
The utility model relates to a kind of actuation technologies field, and more particularly, it relates to a kind of not fragile and electric actuator power mechanism that stroke limit is effective.
Background technique
Define the most widely for actuator and be: a kind of drive unit that can provide straight line or rotary motion, it utilizes certain driving source and works under certain control signal effect.Actuator uses liquid, gas, electric power or other energy and converts it into driving effect by motor, cylinder or other device, and basic actuator is used for position valve being urged to standard-sized sheet or complete shut-down.Actuator for control valve can make valve go to any position accurately.Although most of actuator is all for switch valve; but the design of actuator of today is far beyond simple switching function; that they include position induction device; moment induction installation; electrode protecting device; logic control device, digital communication module and pid control module etc., and these devices are all arranged in a compact shell.
Because increasing factory have employed Automated condtrol; manual operation by machinery or automation equipment substitute; people require that the interface interaction between control system and valve mechanical motion can play in actuator, more require that actuator strengthens work safety and environmental protection performance.In the occasion of some danger, the actuator devices of automation can reduce the injury of personnel.Some Special valve requires emergency opening or closedown under special circumstances, and valve actuator can stop dangerous diffusion further factory's loss to be reduced to minimum simultaneously.To the valve of some high-pressure large-calibers, required actuator stem force square is very large, and at this moment required actuator must improve mechanical efficiency and use the high motor exported, so stable operation large bore valves.For the valve of some little moments of torsion, the advantages such as the small-sized electric valve of essence is also applied and gives birth to, and compares universality and has lightweight, compact structure, multiple functional.
Because final controlling element is used for valve, valve has opening and closing two extreme values on stroke, but motor itself can not corresponding valve design rotational travel, when valve reaches movement travel terminal, if the closedown that motor can not be correct, motor can be caused to burn out, valve internal is out of shape, the serious consequences such as drive mechanism damage, therefore be very necessary to motor or whole dynamic structure increase stroke limit, prior art uses electronic circuit to control motor power, and electronic circuit is higher to environmental requirement, need to keep constant temperature, dedusting, the conditions such as sealing, and fault rate to compare mechanical structure higher, reliability is not enough, simultaneously also higher to the skill set requirements of device maintenance personnel, maintenance difficult after fault damage.
At present, application number is that the Chinese patent of CN200920002195.8 discloses a kind of electric actuator moment control device, it comprises moment input mechanism and main case, wherein said moment input mechanism comprises screwed drive link) and make drive link produce the drive transmission of axial displacement with the screw-thread fit of this drive link, characterized by further comprising the moment be arranged in described main case and adjust position-limit mechanism and the symmetrical two cover moment indication mechanisms be arranged on above main case; Wherein said moment adjustment position-limit mechanism comprises and is arranged on central shaft in main case and flip sleeve dress the first block, spring and the second block on center shaft successively; Described moment indication mechanism comprise be arranged on side above described main case the support with slideway, be arranged in described support and the slide block slided along its slideway and the limit switch be fixed on described slide block, longitudinally a threaded stem is provided with on the bracket along it, the nut of this threaded stem is stuck in described stent outer, helical thread portion and the nut screw connection of panel in described slide block; Wherein said first block and the second block are respectively equipped with a boss, and described two boss stretch out two elongated holes be arranged on described main case respectively and contact with corresponding limit switch and coordinate.
Although this electric actuator moment control device can export and carry out spacing to drive link by control moment; but limit function is still via the switch of control circui motor power; limit effect is undesirable; and available protecting can not be carried out to motor and drive mechanism when drive link moves to limit position; motor output power easily causes damage to the fragile position of drive mechanism inside under the amplification of drive mechanism, causes electric actuator to be damaged.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of not fragile and electric actuator power mechanism that stroke limit is effective.
For achieving the above object, the utility model provides following technological scheme: a kind of electric actuator power mechanism, comprise shell, described shell is provided with motor cavity, motor is provided with in described motor cavity, described motor comprises rotating shaft, described rotating shaft one end extends to outside shell, described rotating shaft is provided with adjustment screw thread, described adjustment thread jacket is provided with limiting stopper, described limiting stopper has and the internal thread regulating screw thread to match, described limiting stopper is provided with the chute being parallel to shaft axis, described shell is provided with track near limiting stopper side, described chute and track sliding are dynamically connected, described rotating shaft one end is arranged with spring, described both ends of the spring is connected with outer casing and limiting stopper respectively.
By adopting technique scheme, spacing for traditional electronic circuit module is improved to rate of fault little, environmental requirement is low, be convenient to the mechanical limit structure of keeping in repair, by coordinating of limiting stopper and screw thread, and the interaction of chute and track, limiting stopper can be run along shaft axis direction in the enclosure, when limiting stopper contacts with the face of shell, reach the stroke end of mechanical position limitation, motor cannot overtravel operate, the available protecting parts such as driving mechanism and valve mechanism, improve the operation stability of equipment, rate of fault is decreased after abandoning circuit structure, limiting stopper and shell are that pure mechanical structure is not fragile, spring can increase motor running resistance at limiting stopper close to during stroke end, motor speed is slowly reduced, prevent motor from sporting all standing when arriving stroke end by running up, protection motor, prevent from damaging, simultaneously also good protective action is served to the driving mechanism of final controlling element and valve mechanism, compare circuit spacing softer, good limit effect.
The utility model is set to further: described shell comprises stroke chamber, and described adjustment screw thread, limiting stopper, track and spring are all located in stroke chamber, is filled with lubricant grease in described stroke chamber.
By adopting technique scheme, protection regulates screw thread, limiting stopper, track and spring, avoids these component exposed in atmosphere; lubricant grease can reduce the loss between limiting stopper and screw thread; and play the effect of cooling heat dissipation, also improve the integrity of equipment simultaneously, reduce failure risk.
The utility model is set to further: described spring one end is provided with pressure transducer, described pressure transducer delivery spring pressure value signal.
By adopting technique scheme, improve Whole Equipment automaticity, for equipment reserves extra functional interface, pressure transducer can combine with circuit and carry out high-precision adjustment to motor power mechanism, improving product function and applicability, increase product performance.
The utility model is set to further: described stroke chamber is provided with clutch away from motor cavity one end, and described clutch is connected with rotating shaft, and described stroke chamber is equipped with sensitive switch near the end points place at screw thread two ends, and described sensitive switch is all electrically connected with clutch.
By adopting technique scheme; motor can disconnect power with clutch in limit point and be connected; ensure that driving mechanism additionally can not bear torsion after arriving limit point; the mechanical structure of protection driving mechanism; reduce the rate of fault of driving mechanism and spoilage, improve service life of equipment further, the disconnecting of driving mechanism and power mechanism also can good Protective valve door part simultaneously; reduce equipment loss, enhance product performance.
The utility model is set to further: the one-body molded setting of described track and stroke chamber, and described track and chute are provided with four groups and twisted rotary shaft axisymmetrical is arranged, and described spring and pressure transducer are located in stroke chamber away from motor side.
By adopting technique scheme, vibration when reduction motor runs is on the impact of pressure transducer, improve testing precision, also completely cut off heat when motor runs to the impact of spring simultaneously, reduce measurement error, track coordinates to come positioning limit block from four angles with chute, prevents limiting stopper under screw rod torsion, radial rotating occurring, and improves limit accuracy.
The utility model is set to further: described sensitive switch is to the distance in the face of stroke chamber and shaft contacts between three times to four times that regulate thread pitch, and described limiting stopper equals four times of pitch in the length in shaft axis direction.
By adopting technique scheme, by the distance limit of sensitive switch, ensure that motor is after arrival limit point, limiting stopper touches sensitive switch, clutch correctly can disconnect and being connected with the power of rotating shaft, motor can also have three to the four buffering surpluses of enclosing after cut-off clutch, motor slowly can slow down along inertia after arriving limit point, avoid motor because of spacing and all standing, reduce motor service wear, increase substantially the working life of motor, because be designed with buffering surplus, motor can operate to sensitive switch limit point by maximum speed, ensure final controlling element be swift in motion and efficiently, raising valves etc. are by the reaction sensitivity of controlling component, reduce equipment loss, enhance product performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric actuator power mechanism embodiment;
Fig. 2 is shell mechanism schematic diagram;
Fig. 3 is turning shaft structure schematic diagram;
Fig. 4 is schematic appearance.
Reference character: 1, shell; 11, motor cavity; 12, stroke chamber; 13, sensitive switch; 14, track; 2, motor; 3, rotating shaft; 31, screw thread; 4, limiting stopper; 41, chute; 5, spring; 6, pressure transducer; 7, clutch.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model electric actuator power mechanism embodiment is described further.
As shown in Figure 1 to Figure 3, a kind of electric actuator power mechanism, comprise the shell 1 being provided with motor 2 chamber 11 and stroke chamber 12, motor 2 is provided with in described motor 2 chamber 11, described motor 2 comprises rotating shaft 3, described rotating shaft 3 is extended outer stroke chamber 12 of also passing, motor 2 chamber 11 and is arrived shell 1 outside, described rotating shaft 3 is provided with and regulates screw thread 31, described adjustment screw thread 31 is located in stroke chamber 12, limiting stopper 4 is arranged with outside described adjustment screw thread 31, described limiting stopper 4 has and the internal thread regulating screw thread 31 to match, described limiting stopper is provided with four chutes 41 that direction is parallel to rotating shaft 3 axis, one-body molded inside described stroke chamber 12 have four tracks 14, described chute 41 and track 14 be slidably connected and around, rotating shaft 3 axisymmetrical is arranged, track 14 coordinates to come positioning limit block 4 from four angles with chute 41, prevent limiting stopper 4 under screw rod torsion, radial rotating occurring, limit chamber avoids above-mentioned limit position part to expose in atmosphere, lubricant grease can reduce the loss between limiting stopper 4 and screw thread 31, and play the effect of cooling heat dissipation, also improve the integrity of equipment simultaneously, reduce failure risk and improve limit accuracy, described rotating shaft 3 one end is arranged with spring 5, described spring 5 two ends are connected with outer casing 1 and limiting stopper 4 respectively, lubricant grease is filled with in described stroke chamber 12, described rotating shaft 3 is provided with Sealing with joint, stroke chamber 12, described Sealing is mechanical seal, prevent lubricant grease from leaking.
Spacing for traditional electronic circuit module is improved to rate of fault little, environmental requirement is low, be convenient to the mechanical limit structure of keeping in repair, by coordinating of limiting stopper 4 and screw thread 31, and the interaction of chute 41 and track 14, limiting stopper 4 can be run along rotating shaft 3 axial direction in shell 1, when limiting stopper 4 contacts with the face of shell 1, reach the stroke end of mechanical position limitation, motor 2 cannot overtravel operate, the available protecting parts such as driving mechanism and valve mechanism, improve the operation stability of equipment, rate of fault is decreased after abandoning circuit structure, limiting stopper 4 and shell 1 are that pure mechanical structure is not fragile, spring 5 at limiting stopper 4 close to increasing motor 2 running resistance during stroke end, motor 2 rotating speed is slowly reduced, prevent motor 2 from sporting all standing when arriving stroke end by running up, protection motor 2, prevent from damaging, simultaneously also good protective action is served to the driving mechanism of final controlling element and valve mechanism, compare circuit spacing softer, good limit effect.
Described spring 5 is arranged at stroke chamber 12 away from motor 2 one end, chamber 11 and is also provided with pressure transducer 6 between spring 5 and shell 1, the described pressure transducer 6 in real time force value of detection springs 5 delivery pressure value information, improve Whole Equipment automaticity, for equipment reserves extra functional interface, be arranged at and can reduce vibration when motor 2 runs to the impact of pressure transducer 6 away from motor 2 side, improve testing precision, also completely cut off heat when motor 2 runs to the impact of spring 5 simultaneously, reduce measurement error, pressure transducer 6 can combine with circuit and carry out high-precision adjustment to motor 2 power mechanism, improving product function and applicability, increase product performance, described rotating shaft 3 one end is also provided with clutch 7, described clutch 7 can be located at the same side with stroke chamber 12, improve transmission accuracy, also two ends, motor 2 chamber 11 can be located at respectively with stroke chamber 12, reduce the volume of whole power mechanism, multiple combination can be had depending on product demand.
Described clutch 7 can be magnetic clutch 7, friction clutch 7 or hydraulic coupling 7, preferred magnetic clutch 7, convenient control, the input end of clutch 7 is connected with rotating shaft 3, output terminal is connected with final controlling element transmission shaft, control end is connected with at least two sensitive switches 13 simultaneously, the end points place of stroke chamber 12 near screw thread 31 two ends be located at respectively by described sensitive switch 13, and sensitive switch 13 arrives the distance in the face that stroke chamber 12 contacts with rotating shaft 3 between three times to four times that regulate screw thread 31 pitch, described limiting stopper 4 equals four times of pitch in the length of rotating shaft 3 axial direction, by the distance limit of sensitive switch 13, ensure that motor 2 is after arrival limit point, limiting stopper 4 touches sensitive switch 13, clutch 7 correctly can disconnect and being connected with the power of rotating shaft 3, motor 2 can also have three to the four buffering surpluses of enclosing after cut-off clutch 7, slowly can slow down along inertia after motor 2 arrives limit point, avoid motor 2 because of spacing and all standing, reduce motor 2 service wear, increase substantially the working life of motor 2.
Motor 2 and clutch 7 disconnect power in limit point and are connected and ensure that driving mechanism additionally can not bear torsion after arriving limit point, the mechanical structure of protection driving mechanism, reduce rate of fault and the spoilage of driving mechanism, further raising service life of equipment, because be designed with buffering surplus, motor 2 can operate to sensitive switch 13 limit point by maximum speed, ensure final controlling element be swift in motion and efficiently, raising valves etc. are by the reaction sensitivity of controlling component, simultaneously the disconnecting of driving mechanism and power mechanism also can good Protective valve door part, reduce equipment loss, enhance product performance.
The above makes preferred implementation of the present utility model, and under not departing from the prerequisite of the utility model principle for the person of ordinary skill of the art, can also make some modification and improvement, these also should be considered as protection domain of the present utility model.
Claims (6)
1. an electric actuator power mechanism, comprise shell, described shell is provided with motor cavity, motor is provided with in described motor cavity, described motor comprises rotating shaft, described rotating shaft one end extends to outside shell, it is characterized in that: described rotating shaft is provided with adjustment screw thread, described adjustment thread jacket is provided with limiting stopper, described limiting stopper has and the internal thread regulating screw thread to match, described limiting stopper is provided with the chute being parallel to shaft axis, described shell is provided with track near limiting stopper side, described chute and track sliding are dynamically connected, described rotating shaft one end is arranged with spring, described both ends of the spring is connected with outer casing and limiting stopper respectively.
2. electric actuator power mechanism according to claim 1, is characterized in that: described shell comprises stroke chamber, described adjustment screw thread, limiting stopper, track and spring are all located in stroke chamber, is filled with lubricant grease in described stroke chamber.
3. electric actuator power mechanism according to claim 1, is characterized in that: described spring one end is provided with pressure transducer, described pressure transducer delivery spring pressure value signal.
4. electric actuator power mechanism according to claim 2, it is characterized in that: described stroke chamber is provided with clutch away from motor cavity one end, described clutch is connected with rotating shaft, described stroke chamber is equipped with sensitive switch near the end points place at screw thread two ends, and described sensitive switch is all electrically connected with clutch.
5. electric actuator power mechanism according to claim 3, it is characterized in that: the one-body molded setting of described track and stroke chamber, described track and chute are provided with four groups and twisted rotary shaft axisymmetrical is arranged, and described spring and pressure transducer are located in stroke chamber away from motor side.
6. electric actuator power mechanism according to claim 4, it is characterized in that: described sensitive switch is to the distance in the face of stroke chamber and shaft contacts between three times to four times that regulate thread pitch, and described limiting stopper equals four times that regulate thread pitch in the length in shaft axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603375.2U CN204176088U (en) | 2014-10-17 | 2014-10-17 | Electric actuator power mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603375.2U CN204176088U (en) | 2014-10-17 | 2014-10-17 | Electric actuator power mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204176088U true CN204176088U (en) | 2015-02-25 |
Family
ID=52564898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420603375.2U Expired - Fee Related CN204176088U (en) | 2014-10-17 | 2014-10-17 | Electric actuator power mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204176088U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769443A (en) * | 2017-09-15 | 2018-03-06 | 安徽达来电机有限公司 | A kind of motor with overhead controlled in wireless sound arrester |
| WO2021003993A1 (en) * | 2019-07-05 | 2021-01-14 | 广东金力变速科技股份有限公司 | Valve detent apparatus |
| CN114012775A (en) * | 2021-12-07 | 2022-02-08 | 江苏集萃智能制造技术研究所有限公司 | High-performance mobile robot joint module |
-
2014
- 2014-10-17 CN CN201420603375.2U patent/CN204176088U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769443A (en) * | 2017-09-15 | 2018-03-06 | 安徽达来电机有限公司 | A kind of motor with overhead controlled in wireless sound arrester |
| WO2021003993A1 (en) * | 2019-07-05 | 2021-01-14 | 广东金力变速科技股份有限公司 | Valve detent apparatus |
| CN114012775A (en) * | 2021-12-07 | 2022-02-08 | 江苏集萃智能制造技术研究所有限公司 | High-performance mobile robot joint module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20151017 |
|
| EXPY | Termination of patent right or utility model |