CN104265968A - Electric actuator based on planetary gear drive - Google Patents
Electric actuator based on planetary gear drive Download PDFInfo
- Publication number
- CN104265968A CN104265968A CN201410423559.5A CN201410423559A CN104265968A CN 104265968 A CN104265968 A CN 104265968A CN 201410423559 A CN201410423559 A CN 201410423559A CN 104265968 A CN104265968 A CN 104265968A
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- CN
- China
- Prior art keywords
- gear
- inner gear
- electric actuator
- internal gear
- fixed annulus
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses an electric actuator based on planetary gear drive. The electric actuator comprises an ultrasonic motor and a housing. An eccentric shaft is connected to a rotating shaft of the ultrasonic motor through a coupling. A fixed inner gear, a duplex planet gear and a moving inner gear are arranged inside the housing. The duplex planet gear is disposed between the fixed inner gear and the moving inner gear. The eccentric shaft penetrates the fixed inner gear, the duplex planet gear and the moving inner gear and is connected with an output shaft. The electric actuator with the ultrasonic motor has the advantages of low speed, high torque, high start and stop response speed, high holding torque, capability of mechanical self-locking and simple structure; with the ultrasonic motor combined with the fixed inner gear, the duplex planet gear and the moving inner gear, the electric actuator has the advantages of simple structure, stability in running, high bearing capacity, convenience in processing, low cost, high transmission ratio, high transmission efficiency, low noise, capability of mechanical self-locking and high transmission precision; cost is greatly decreased.
Description
Technical field
The present invention relates to a kind of power type actuator based on Planetary Gear Transmission, be specifically related to a kind of twin-stage inferior planet based on Driven by Ultrasonic Motors (being called for short NN type) Involute planetary gear drive with small teeth difference power type actuator.
Background technique
China's electric power, metallurgy, petroleum and chemical industry industrial expansion need different output speed electric actuator, and the features such as volume is little, lightweight, velocity ratio is large, efficiency is high, bearing capacity is large, running is reliable and the life-span is long that require reduction gearing mechanism to have; In the technological scheme of electric actuator, Mechanical & Electrical Transmission scheme is the centre point of electric actuator correlation technique, and it is good and bad that different drive motor and driving mechanism determine actuator's performance in itself; Although the kind of existing reduction gearing mechanism is a lot, common column gear transmission seems that velocity ratio is little, volume large, structure bulky; Common worm drive is when large velocity ratio, and efficiency is lower; Though cycloid pinwheel planetary gear transmission system can meet requirement set forth above, its cost is higher, needs special device manufacture.
Traditional electric actuator adopts electromagnetic machine to drive, early stage electric actuator adopts direct current torque motor, along with the development of the technology of AC variale speed, nowadays the motor type of electric actuator comprises single-phase alternating current asynchronous machine, phase asynchronous AC motor, permanent magnet ac synchronous motor etc., due to electric actuator work characteristics be continuous position servocontrol, intermittent motion, the operating time is short, the intermittent time is short, varying duty, work irregular, electromagnetic machine principle be not electric actuator optimum Match motor, be suitable for the electromagnetic machine structurally more complicated of frequent start-stop, if with general-purpose machine, need more complicated control algorithm, in order to obtain good direct torque performance, the asynchronous motor of at present conventional interchange and permagnetic synchronous motor are usually adopted to the vector control algorithm FOC of complicated Magnetic oriented, as the SIPOS Flash5 of Siemens, or Direct Torque Control DTC control algorithm, causing control system must adopt high performance digital signal controller can meet the operational capability demand of above-mentioned complex control algorithm, complete above-mentioned control algorithm and also need expensive position and speed sensor, current sensor, not only increase the complexity of system, add the cost of system, but also reduce the reliability of system.
Summary of the invention
For the technical problem of above-mentioned existence, the object of the invention is: propose a kind of adopt ultrasound electric machine as electric actuator drive motor, adopt Involute planetary gear drive with small teeth difference mechanism as the power type actuator of electric actuator.
Technical solution of the present invention is achieved in that a kind of power type actuator based on Planetary Gear Transmission, comprises ultrasound electric machine and casing; The running shaft of described ultrasound electric machine is connected with eccentric shaft by coupling; Fixed annulus, compound planet gear, movable internal gear is provided with in described casing; Described compound planet gear is arranged between fixed annulus and movable internal gear; Described eccentric shaft through fixed annulus, compound planet gear and movable internal gear, and is connected with output shaft; During use, ultrasound electric machine drives eccentric shaft turns by coupling, and because fixed annulus is motionless, force compound planet gear both around fixed annulus revolution, again around interior its center rotation, drive activity internal gear is exported by output shaft and rotates.
Preferably, described movable internal gear side is provided with Hall transducer.
Preferably, described fixed annulus and movable internal gear one are recessed tooth, is double wedge, engages each other.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
A kind of power type actuator based on Planetary Gear Transmission of the present invention, actuator is made to have low-speed and large-torque by ultrasound electric machine, start and stop fast response time, holding torque is large, can mechanical self-latching and the simple advantage of structure, when ultrasound electric machine and fixed annulus, compound planet gear, it is simple that the electric actuator that movable internal gear combines composition has structure, smooth running, bearing capacity is large, easy to process, cost is low, velocity ratio is large, transmission efficiency is high, noise is little, machine automatization self-locking, the advantage that transmission accuracy is high, when satisfied production, greatly reduce cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing 1 is the schematic diagram of a kind of power type actuator based on Planetary Gear Transmission of the present invention;
Wherein: 1, ultrasound electric machine; 2, coupling; 3, eccentric shaft; 4, fixed annulus; 5,6 is compound planet gear; 7, movable internal gear; 8, output shaft; 9, casing; 10, Hall transducer.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described.
Be a kind of power type actuator based on Planetary Gear Transmission of the present invention as shown in Figure 1, comprise ultrasound electric machine 1 and casing 9; The running shaft of described ultrasound electric machine 1 is connected with eccentric shaft 3 by coupling 2; Be provided with in described casing 9 fixed annulus 4, compound planet gear 5,6, movable internal gear 7; Described compound planet gear 5,6 is arranged between fixed annulus 4 and movable internal gear 7; Described eccentric shaft 3 through fixed annulus 4, compound planet gear 5,6 and movable internal gear 7, and is connected with output shaft 8; During use, ultrasound electric machine 1 drives eccentric shaft 3 to rotate by coupling 2, because fixed annulus 4 is motionless, forces compound planet gear 5,6 both to revolve round the sun around fixed annulus 4, and again around interior its center rotation, drive activity internal gear 7 is exported by output shaft 8 and rotates; Described movable internal gear 7 side is provided with Hall transducer 10.
When detecting the position of valve opening, can be detected by the principle of Hall effect, magnetic coding-belt is sticked with glue in the axle center of movable internal gear 7, when Hall transducer 10 reads the diverse location of this magnetic coding-belt, just can judge the aperture of now valve, this mode simplifies the mechanism of Measuring opening, and the number of parts of whole actuator is reduced, and is convenient to assembling; Due to fixed annulus during Inside gear drive 4 and movable internal gear 7 one be recessed tooth, for double wedge, both centre of curvature are in same direction, and radius of curvature is again close to equal, and therefore area of contact is large, and the contact strength of the gear teeth is greatly improved; Again because adopting short tooth system, wheel beam strength of tooth also improves; In addition, during few teeth difference transmission, because sideshake is very little, causing distortion after tooth force, is no longer a pair gear teeth meshing, but severally engages the gear teeth simultaneously, so smooth running, noise are little, in identical modulus situation, the power that comparable common cylinder gear speed reducer transmission is larger.
The present invention makes actuator have low-speed and large-torque by ultrasound electric machine 1, start stop fast response time, holding torque large, can mechanical self-latching and the simple advantage of structure, when ultrasound electric machine 1 and fixed annulus 4, compound planet gear 5,6, movable internal gear 7 is combined the electric actuator formed and has that structure is simple, smooth running, bearing capacity are large, easy to process, cost is low, velocity ratio is large, transmission efficiency is high, noise is little, machine automatization self-locking, advantage that transmission accuracy is high, when satisfied production, greatly reduce cost.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. based on a power type actuator for Planetary Gear Transmission, it is characterized in that: comprise ultrasound electric machine and casing; The running shaft of described ultrasound electric machine is connected with eccentric shaft by coupling; Fixed annulus, compound planet gear, movable internal gear is provided with in described casing; Described compound planet gear is arranged between fixed annulus and movable internal gear; Described eccentric shaft through fixed annulus, compound planet gear and movable internal gear, and is connected with output shaft; During use, ultrasound electric machine drives eccentric shaft turns by coupling, and because fixed annulus is motionless, force compound planet gear both around fixed annulus revolution, again around interior its center rotation, drive activity internal gear is exported by output shaft and rotates.
2. a kind of power type actuator based on Planetary Gear Transmission as claimed in claim 1, is characterized in that: described movable internal gear side is provided with Hall transducer.
3. a kind of power type actuator based on Planetary Gear Transmission as claimed in claim 1, is characterized in that: described fixed annulus and movable internal gear one be recessed tooth, one be double wedge, engages each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423559.5A CN104265968A (en) | 2014-08-26 | 2014-08-26 | Electric actuator based on planetary gear drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423559.5A CN104265968A (en) | 2014-08-26 | 2014-08-26 | Electric actuator based on planetary gear drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265968A true CN104265968A (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410423559.5A Pending CN104265968A (en) | 2014-08-26 | 2014-08-26 | Electric actuator based on planetary gear drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265968A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605285A (en) * | 2016-03-09 | 2016-05-25 | 扬州电力设备修造厂有限公司 | Quick partially rotary electric actuating mechanism for ships |
| CN106763533A (en) * | 2017-03-23 | 2017-05-31 | 深圳市创晶辉精密塑胶模具有限公司 | Electronic lock planetary speed reducer with small tooth number difference |
| CN107228208A (en) * | 2016-03-23 | 2017-10-03 | 浙江盾安禾田金属有限公司 | A kind of rotary valve |
| WO2018170844A1 (en) * | 2017-03-23 | 2018-09-27 | 深圳市创晶辉精密塑胶模具有限公司 | Electronic lock small teeth difference planetary reducer |
| CN109723832A (en) * | 2017-10-27 | 2019-05-07 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083672U (en) * | 1990-08-11 | 1991-08-28 | 武汉阀门厂 | Electric driving device for revolving valve of planetary gear |
| US6028384A (en) * | 1998-11-17 | 2000-02-22 | Cei | Actuator |
| CN204141005U (en) * | 2014-08-26 | 2015-02-04 | 苏州市职业大学 | A kind of power type actuator based on Planetary Gear Transmission |
-
2014
- 2014-08-26 CN CN201410423559.5A patent/CN104265968A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083672U (en) * | 1990-08-11 | 1991-08-28 | 武汉阀门厂 | Electric driving device for revolving valve of planetary gear |
| US6028384A (en) * | 1998-11-17 | 2000-02-22 | Cei | Actuator |
| CN204141005U (en) * | 2014-08-26 | 2015-02-04 | 苏州市职业大学 | A kind of power type actuator based on Planetary Gear Transmission |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605285A (en) * | 2016-03-09 | 2016-05-25 | 扬州电力设备修造厂有限公司 | Quick partially rotary electric actuating mechanism for ships |
| CN105605285B (en) * | 2016-03-09 | 2018-07-20 | 扬州电力设备修造厂有限公司 | A kind of Quick-type part revolution warship marine electric executing agency |
| CN107228208A (en) * | 2016-03-23 | 2017-10-03 | 浙江盾安禾田金属有限公司 | A kind of rotary valve |
| CN106763533A (en) * | 2017-03-23 | 2017-05-31 | 深圳市创晶辉精密塑胶模具有限公司 | Electronic lock planetary speed reducer with small tooth number difference |
| WO2018170844A1 (en) * | 2017-03-23 | 2018-09-27 | 深圳市创晶辉精密塑胶模具有限公司 | Electronic lock small teeth difference planetary reducer |
| CN106763533B (en) * | 2017-03-23 | 2020-04-28 | 深圳市创晶辉精密塑胶模具有限公司 | Electronic lock small tooth difference planetary speed reducer |
| CN109723832A (en) * | 2017-10-27 | 2019-05-07 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
| CN109723832B (en) * | 2017-10-27 | 2022-09-13 | 浙江三花智能控制股份有限公司 | Electronic expansion valve and refrigeration system with same |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150107 |