CN104460822B - The electric actuator of band brake - Google Patents
The electric actuator of band brake Download PDFInfo
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- CN104460822B CN104460822B CN201410537663.7A CN201410537663A CN104460822B CN 104460822 B CN104460822 B CN 104460822B CN 201410537663 A CN201410537663 A CN 201410537663A CN 104460822 B CN104460822 B CN 104460822B
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Abstract
A kind of electric actuator of band brake, comprise motor component, drive disk assembly, deceleration component and electric cylinder parts, wherein, motor component is connection for transmission parts, deceleration component and electric cylinder parts successively, and drive electric cylinder component movement by drive disk assembly and deceleration component; This motor component comprises Intelligent step motor, detent and transmission shaft, during work, first detent obtains electric and unclamps the transmission shaft being in on-position, then Intelligent step motor obtains electric and drives transmission shaft to rotate transmission power, when Intelligent step motor power down or damage, detent can ensure that electric cylinder parts are in breaking down.The present invention not only can ensure to have the features such as positioning precision is high, load-bearing capacity is large, backlass is little, transmission efficiency is high, operate steadily, volume is little when Intelligent step motor normally works, and when Intelligent step motor power down or damage, actuator will be in breaking down, be beneficial to the stable of reflecting surface, be applicable to high-accuracy active control system.
Description
Technical field
The present invention relates to a kind of electric operator, be specifically related to a kind of electric actuator of the band brake for large-scale radio telescope primary reflection surface active control system, belong to precision machinery technology field.
Background technology
The surface shape error of large-scale radio telescope primary reflection surface is the key factor affecting observed efficiency, and for high-frequency signal, the observed efficiency decay of the primary reflection surface that surface shape error is larger is even up to 5 times more than.In order to overcome large-scale radio telescope due to own wt, wind carries and temperature variation causes primary reflection surface surface deformation, usually needing to compensate deflection, making primary reflection surface shape more meet standard parabolic.For this purpose, primary reflection surface is divided into some subpanels, drives each subpanel to do micro-displacement by actuator, thus compensate the deflection of primary reflection surface.But when actuator motors power dowji portions or when damaging, because whole actuator does not have auto-lock function, therefore cannot keep the compensating coefficient that primary reflection surface deflection has been made, namely Intelligent step motor can not be in breaking down, and be retracted into original position, thus have impact on the stable of large-scale radio telescope primary reflection surface shape, when Intelligent step motor is energized again, no longer compensation must not be re-started.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of electric actuator of large-scale radio telescope primary reflection surface adjustment band brake is provided, reach the effect that volume is little, efficiency is high, stable drive, heavy load abrasion are little and backlass is little, and can when Intelligent step motor power down or Intelligent step motor damage, whole actuator will be in locking state, maintain the compensating coefficient of having made primary reflection surface deflection.
The present invention is achieved by the following technical solutions:
A kind of electric actuator of band brake, it comprises motor component, drive disk assembly, deceleration component and electric cylinder parts, described motor component is connection for transmission parts, deceleration component and electric cylinder parts successively, and drive electric cylinder component movement by drive disk assembly and deceleration component; This motor component comprises Intelligent step motor, detent and transmission shaft, during work, first described detent obtains electric and unclamps the transmission shaft being in on-position, then described Intelligent step motor obtains electric and drives transmission shaft to rotate transmission power, when Intelligent step motor power down or damage, described detent can ensure that described electric cylinder parts are in breaking down.
Further, described drive disk assembly comprises gear case, gear shaft and the second conical gear, and described gear shaft is arranged on described gear case by bearing, and described second conical gear is fixedly mounted on this gear shaft.
Further, described motor component also comprises motor mounting rack, shaft coupling, first conical gear and shielding box, described motor mounting rack is fixed on described gear case, described Intelligent step motor is fixed on motor mounting rack, described transmission shaft to be arranged on the casing of described gear case side by bearing and orthogonal with described gear shaft, this transmission shaft is connected with Intelligent step motor by described shaft coupling, described first conical gear to be arranged on this transmission shaft and to engage with the second conical gear, described detent to be installed on described gear case by described motor mounting rack and to brake described transmission shaft under powering-off state, described shielding box is fixed on described gear case, this shielding box is provided with power supply signal interface.
Further, heat conduction silicon chip is posted in the side of described Intelligent step motor, and this Intelligent step motor is connected with the external world by the aviation socket on described shielding box.
Further, described deceleration component comprises planet-cycloid reducer, mount pad, cam orientation cover and reducer output shaft, described planet-cycloid reducer is installed on described upper gear case by mount pad and is connected with described gear shaft by described cam orientation cover, and described reducer output shaft is arranged at the top of this planet-cycloid reducer and outputting power.
Further, described electric cylinder parts comprise screw mandrel, feed screw nut, electric cylinder housing, firm guide pin bushing, arm-tie and pull bar, described screw mandrel is connected with described reducer output shaft and is placed in described electric cylinder enclosure interior by bearing holder (housing, cover), described firm guide pin bushing is placed on this electric cylinder housing periphery by sliding bearing, described arm-tie is fixed on this firm guide pin bushing, described pull bar is connected on this arm-tie, described feed screw nut is arranged at described electric cylinder enclosure interior and is connected to the periphery of described screw mandrel, this feed screw nut and described firm guide pin bushing are fixedly connected and retrained by the slideway in described electric cylinder housing can only moving linearly, described screw mandrel rotates and drives described feed screw nut to make upper and lower rectilinear motion, described firm guide pin bushing is driven to move up and down along electric cylinder housing, and then drive described arm-tie and pull bar motion.
Further, described detent is controlled by 48V direct current.
Compared with prior art, the electric actuator of band brake of the present invention not only can ensure to have the features such as positioning precision is high, load-bearing capacity is large, backlass is little, transmission efficiency is high, operate steadily, volume is little when Intelligent step motor normally works, and when Intelligent step motor power down or damage, electric cylinder parts will be in locked condition, the compensation made the deflection of primary reflection surface is locked, repeat compensation process again when being again energized to avoid Intelligent step motor, the present invention is applicable to high-accuracy active control system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the enlarged drawing of motor component of the present invention.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, following examples, premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention are not limited to following embodiment.
Refer to Fig. 1, the electric actuator of diagram band brake comprises four parts, motor component, drive disk assembly, deceleration component and electric cylinder parts respectively, described motor component is connection for transmission parts, deceleration component and electric cylinder parts successively, and drive electric cylinder component movement by drive disk assembly and deceleration component.
Described drive disk assembly comprises gear case 11, gear shaft 30 and the second conical gear 23; Described gear shaft 30 is arranged on described gear case 11 by bearing 26 and 31, and described second conical gear 23 is fixedly mounted on this gear shaft 30.
Incorporated by reference to consulting Fig. 2, described motor component comprises Intelligent step motor 18, detent 15, transmission shaft 20, motor mounting rack 16, shaft coupling 19, first conical gear 12 and shielding box 17.Described motor mounting rack 16 is fixed on described gear case 11, described Intelligent step motor 18 is fixed on motor mounting rack 16, described transmission shaft 20 to be arranged on the casing of described gear case 11 side by bearing 14 and 21 and orthogonal with described gear shaft 30, this transmission shaft 20 is connected with Intelligent step motor 18 by described shaft coupling 19, and described first conical gear 12 to be arranged on this transmission shaft 20 and to engage with the second conical gear 23; Described detent 15 is installed on described gear case 11 by described motor mounting rack 16, and this detent 15 is controlled by 48V direct current, and described transmission shaft 20 braked in the event of a power failure by described detent 15; Described shielding box 17 is screwed on described gear case 11, and this shielding box 17 is provided with power supply signal interface; Heat conduction silicon chip is posted in the side of described Intelligent step motor 18, and this Intelligent step motor 18 is connected with the external world by the aviation socket on described shielding box 17.During work, first described detent 15 obtains electric and unclamps the transmission shaft 20 being in on-position, then described Intelligent step motor 18 obtains electric, and drive transmission shaft 20 to rotate by shaft coupling 19 and by power transmission give the first conical gear 12, then the first conical gear 12 again power is passed to the second conical gear 23, second conical gear 23 again driven gear axle 30 rotate output power.When Intelligent step motor 18 power down or damage, described detent 15 can transmission shaft 20 described in braking and locking, ensures described electric cylinder parts generation breaking down, thus maintains the compensating coefficient of having made primary reflection surface deflection.
Refer to Fig. 1, described deceleration component comprises planet-cycloid reducer 8, mount pad 32, cam orientation cover 33 and reducer output shaft 35.Described planet-cycloid reducer is arranged in protective housing 7, and the top of described gear case 11 is installed on by mount pad 32, this planet-cycloid reducer 8 is connected with described gear shaft 30 by described cam orientation cover 33, and described reducer output shaft 35 is arranged at the top of this planet-cycloid reducer 8 and outputting power.During work, first be gear shaft 30 in gear case 11 by power transmission to cam orientation cover 33, then power is inputed to planet-cycloid reducer 8 by cam orientation cover 33 again, and the power after amplification moment of torsion is exported to electric cylinder parts by reducer output shaft 35 through speed change by planet-cycloid reducer 8 again.
Described electric cylinder parts comprise screw mandrel 38, feed screw nut 1, electric cylinder housing 39, just guide pin bushing 40, arm-tie 4 and pull bar 41.Described screw mandrel 38 is connected with described reducer output shaft 35, and this screw mandrel 38 is placed on the inside of described electric cylinder housing 39 by bearing 36 and 37; Described firm guide pin bushing 40 is placed on the periphery of this electric cylinder housing 39 by sliding bearing 2, described arm-tie 4 is fixed on this firm guide pin bushing 40, and described pull bar 41 is connected on this arm-tie 4; Described feed screw nut 1 is arranged at the inside of described electric cylinder housing 39 and is connected to the periphery of described screw mandrel 38, and this feed screw nut 1 is fixedly connected with described firm guide pin bushing 40, and can only moving linearly by the slideway constraint in described electric cylinder housing 39; Described screw mandrel 38 rotates and drives described feed screw nut 1 to make upper and lower rectilinear motion, drives described firm guide pin bushing 40 to move up and down along electric cylinder housing 39, and then drives described arm-tie 4 and pull bar 41 to move.During work, first power is passed to screw mandrel 38 by key type of attachment by the reducer output shaft 35 of deceleration component, screw mandrel 38 rotates and drives feed screw nut 1 to move under the support of bearing 36 and 37, because feed screw nut 1 retrains by slideway, so can only make upper and lower rectilinear motion; When feed screw nut 1 moves, firm guide pin bushing 40 is driven to move up and down along electric cylinder housing 39, owing to having sliding bearing 2 in firm guide pin bushing 40, so friction is less; The motion of firm guide pin bushing 40 drives arm-tie 4 and pull bar 41 to move, thus reaches the effect driving external large-scale radio telescope primary reflection surface subpanel.
Claims (6)
1. the electric actuator of a band brake, it is characterized in that: described electric actuator comprises motor component, drive disk assembly, deceleration component and electric cylinder parts, described motor component is connection for transmission parts, deceleration component and electric cylinder parts successively, and drive electric cylinder component movement by drive disk assembly and deceleration component; Described motor component comprises Intelligent step motor, detent and transmission shaft; Described drive disk assembly comprises gear case, gear shaft and the second conical gear, and described gear shaft is arranged on described gear case by bearing, and described second conical gear is fixedly mounted on this gear shaft; During work, first described detent obtains electric and unclamps the transmission shaft being in on-position, then described Intelligent step motor obtains electric and drives transmission shaft to rotate transmission power, when Intelligent step motor power down or damage, described detent can ensure that described electric cylinder parts are in breaking down.
2. the electric actuator of band brake as claimed in claim 1, it is characterized in that: described motor component also comprises motor mounting rack, shaft coupling, first conical gear and shielding box, described motor mounting rack is fixed on described gear case, described Intelligent step motor is fixed on motor mounting rack, described transmission shaft to be arranged on the casing of described gear case side by bearing and orthogonal with described gear shaft, this transmission shaft is connected with Intelligent step motor by described shaft coupling, described first conical gear to be arranged on this transmission shaft and to engage with the second conical gear, described detent to be installed on described gear case by described motor mounting rack and to brake described transmission shaft under powering-off state, described shielding box is fixed on described gear case, this shielding box is provided with power supply signal interface.
3. the electric actuator of band brake as claimed in claim 2, is characterized in that: heat conduction silicon chip is posted in the side of described Intelligent step motor, and this Intelligent step motor is connected with the external world by the aviation socket on described shielding box.
4. the electric actuator of band brake as claimed in claim 2, it is characterized in that: described deceleration component comprises planet-cycloid reducer, mount pad, cam orientation cover and reducer output shaft, described planet-cycloid reducer is installed on described upper gear case by mount pad and is connected with described gear shaft by described cam orientation cover, and described reducer output shaft is arranged at the top of this planet-cycloid reducer and outputting power.
5. the electric actuator of band brake as claimed in claim 4, it is characterized in that: described electric cylinder parts comprise screw mandrel, feed screw nut, electric cylinder housing, firm guide pin bushing, arm-tie and pull bar, described screw mandrel is connected with described reducer output shaft and is placed in described electric cylinder enclosure interior by bearing holder (housing, cover), described firm guide pin bushing is placed on this electric cylinder housing periphery by sliding bearing, described arm-tie is fixed on this firm guide pin bushing, described pull bar is connected on this arm-tie, described feed screw nut is arranged at described electric cylinder enclosure interior and is connected to the periphery of described screw mandrel, this feed screw nut and described firm guide pin bushing are fixedly connected and retrained by the slideway in described electric cylinder housing can only moving linearly, described screw mandrel rotates and drives described feed screw nut to make upper and lower rectilinear motion, described firm guide pin bushing is driven to move up and down along electric cylinder housing, and then drive described arm-tie and pull bar motion.
6. the electric actuator of band brake as claimed in claim 1, is characterized in that: described detent is controlled by 48V direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537663.7A CN104460822B (en) | 2014-10-13 | 2014-10-13 | The electric actuator of band brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537663.7A CN104460822B (en) | 2014-10-13 | 2014-10-13 | The electric actuator of band brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104460822A CN104460822A (en) | 2015-03-25 |
| CN104460822B true CN104460822B (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410537663.7A Active CN104460822B (en) | 2014-10-13 | 2014-10-13 | The electric actuator of band brake |
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| Country | Link |
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| CN (1) | CN104460822B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4201992A (en) * | 1978-04-20 | 1980-05-06 | Communications Satellite Corporation | Multibeam communications satellite |
| DE3820920A1 (en) * | 1988-03-31 | 1989-11-16 | Franz Eisenhofer | Antenna arrangement |
| CN2842764Y (en) * | 2005-09-29 | 2006-11-29 | 西安电子科技大学 | Ordered winding device for flexible-structure antenna feed-source flexible cord |
| CN1909285A (en) * | 2006-08-14 | 2007-02-07 | 西安电子科技大学 | Multiple-wave feed automatic switch and drive device for large-scale flexible radio telescope antenna |
| CN101938030A (en) * | 2010-07-15 | 2011-01-05 | 中国电子科技集团公司第五十四研究所 | Zero calibration method for adjusting device for antenna panel |
| CN102593608A (en) * | 2012-03-09 | 2012-07-18 | 上海交通大学 | Electric actuator for actively adjusting main reflection face of large-size radio telescope |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010165281A (en) * | 2009-01-19 | 2010-07-29 | Alps Electric Co Ltd | Operational sense imparting type input device |
-
2014
- 2014-10-13 CN CN201410537663.7A patent/CN104460822B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4201992A (en) * | 1978-04-20 | 1980-05-06 | Communications Satellite Corporation | Multibeam communications satellite |
| DE3820920A1 (en) * | 1988-03-31 | 1989-11-16 | Franz Eisenhofer | Antenna arrangement |
| CN2842764Y (en) * | 2005-09-29 | 2006-11-29 | 西安电子科技大学 | Ordered winding device for flexible-structure antenna feed-source flexible cord |
| CN1909285A (en) * | 2006-08-14 | 2007-02-07 | 西安电子科技大学 | Multiple-wave feed automatic switch and drive device for large-scale flexible radio telescope antenna |
| CN101938030A (en) * | 2010-07-15 | 2011-01-05 | 中国电子科技集团公司第五十四研究所 | Zero calibration method for adjusting device for antenna panel |
| CN102593608A (en) * | 2012-03-09 | 2012-07-18 | 上海交通大学 | Electric actuator for actively adjusting main reflection face of large-size radio telescope |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104460822A (en) | 2015-03-25 |
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