CN105391234A - Dynamoelectric linear actuator with controllable journey and functions of anti-rusting and shock-absorbing protection - Google Patents
Dynamoelectric linear actuator with controllable journey and functions of anti-rusting and shock-absorbing protection Download PDFInfo
- Publication number
- CN105391234A CN105391234A CN201510924736.2A CN201510924736A CN105391234A CN 105391234 A CN105391234 A CN 105391234A CN 201510924736 A CN201510924736 A CN 201510924736A CN 105391234 A CN105391234 A CN 105391234A
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- CN
- China
- Prior art keywords
- sliding sleeve
- shock
- electric cylinder
- support column
- stroke
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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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a dynamoelectric linear actuator with a controllable journey and functions of anti-rusting and shock-absorbing protection. The dynamoelectric linear actuator comprises a motor, a sliding sleeve, a bearing pipe, a stay cord displacement sensor, a connecting plate, a corrugated extension tube and a rubber buffer cushion. The dynamoelectric linear actuator detects the extension and displacement of an electric cylinder sliding sleeve through the stay cord displacement sensor so as to enable the journey of the electric cylinder to be accurate and controllable, and to further enable the electric cylinder to be conveniently used for driving objects , wherein the displacement of the objects needs to be accurately controlled; a screw rod is sealed through the corrugated extension tube, so that the problem that the screw rod is rusted and damaged due to contact between steam and the screw rod can be avoided; and by setting the rubber buffer cushion between the sliding sleeve and a threaded sleeve, the axial impact force on a thread pair of a screw rod mechanism can be buffered by the rubber buffer cushion in working processes of starting, stopping, direction changing and the like of the motor, so as to avoid the damage of the thread pair caused by the axial impact force and to reduce the fault rate of the electric cylinder.
Description
Technical field
The present invention relates to a kind of drive unit, particularly a kind of electric cylinder.
Background technology
Electric cylinder is the drive unit of rectilinear motion with driven by motor screw mechanism (as sliding screw, ball-screw) by convert rotational motion.The structure of electric cylinder comprises the supporting structure of motor, decelerator, screw mechanism, sliding sleeve and supporting sliding sleeve.
Existing supporting structure comprise be connected with reducer shell support column, be fixed on support column front end and the screw rod of the guide holder be slidably matched with sliding sleeve and fixed guide seat.The parts of supporting structure are more, complex structure, and volume is large, and manufacturing cost is higher.
And existing electric cylinder does not have the device its stroke being carried out to detection and control, when needing the object that must accurately control by electric cylinder drive displacement amount, need to arrange displacement control system in addition, ease of use is poor.
And the hermetically-sealed construction of existing electric cylinder is poor, air easily directly enters in sliding sleeve and screw mechanism is directly contacted with air, and the easy corrosion screw thread pair of the aqueous vapor in air, causes screw mechanism to damage; And screw mechanism lacks lubrication, the easy wear damage of screw mechanism.
And existing electric cylinder does not have damping, buffering function, because motor changes greatly at course of work medium velocities such as starting, stopping, commutations, screw drive pair is hit power greatly, easily causes screw drive pair to damage.
Summary of the invention
In view of this, the object of this invention is to provide a kind of with antirust and shock-absorbing protecting and the controlled electric linear driver of stroke, can not carry out to its stroke the technical problem that accurately controls to solve prior art electric cylinder; And the easy corrosion of the screw mechanism solving existing electric cylinder, wear damage technical problem; And electric cylinder does not have damping, buffering function in solution prior art, in the courses of work such as electric motor starting, stopping, commutation, screw drive pair is hit power greatly, holds flimsy technical problem.
Antirust and the shock-absorbing protecting of band of the present invention and the controlled electric linear driver of stroke, comprise motor, sliding sleeve, the straight reciprocating motion of promotion sliding sleeve screw mechanism, connect the decelerator of motor and screw mechanism and support the supporting arrangement of sliding sleeve, the thread bush that described screw mechanism comprises screw mandrel and coordinates with screw mandrel, the end of described sliding sleeve is fixedly connected with thread bush;
Described supporting arrangement comprises the support column be enclosed within outside screw mandrel structure, one end of described support column is fixed on the housing of decelerator, the other end of described support column is provided with guided bearing, described guided bearing comprises the bearing pedestal be fixed in the pore of support column front end and the sliding bearing be fixed in bearing pedestal, and described sliding bearing coordinates with sliding sleeve linear slide;
The displacement display that described electric cylinder also comprises the displacement sensor for pull rope be arranged on support column, the electric machine controller be electrically connected with displacement sensor for pull rope and is electrically connected with displacement sensor for pull rope, described sliding sleeve is provided with and connects and the connecting plate making stay cord axially parallel with sliding sleeve with the stay cord of displacement sensor for pull rope;
Described electric cylinder also comprises the bellows that one end is connected with support column end part seal, the other end is connected with thread bush end part seal;
Rubber buffer is provided with between described sliding sleeve and the end face of thread bush.
Further, the power output shaft of described decelerator is connected by spring coupling with screw mandrel.
Further, lubricating grease is provided with in described sliding sleeve.
Further, described band antirust with shock-absorbing protecting and the controlled electric linear driver of stroke also comprise be connected with the front end of sliding sleeve universal joint, be connected with universal joint before bearing and the rear support hinged with reducer shell.
Beneficial effect of the present invention:
1, the antirust and shock-absorbing protecting of band of the present invention and the controlled electric linear driver of stroke; it detects the telescopic displacement of electric cylinder sliding sleeve by arranging displacement sensor for pull rope; thus make the stroke controllable precise of electric cylinder, and then make electric cylinder can easily be used for the accurate object controlled of drive displacement amount need.
2, the antirust and shock-absorbing protecting of band of the present invention and the controlled electric linear driver of stroke, it is sealed screw mandrel by bellows, and aqueous vapor can be avoided with screw mandrel to contact the problem causing screw mandrel corrosion to damage.
3, the antirust and shock-absorbing protecting of band of the present invention and the controlled electric linear driver of stroke; it by arranging rubber buffer between sliding sleeve and thread bush; in the courses of work such as electric motor starting, stopping, commutation; rubber buffer can cushion the axial impact force to screw mechanism screw thread pair; thus the damage of axial impact force double thread pair can be avoided, reduce the failure rate of electric cylinder.
Accompanying drawing explanation
Fig. 1 is the antirust and shock-absorbing protecting of the present embodiment band and the sectional structure schematic diagram of the controlled electric linear driver of stroke.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in the figure, antirust and the shock-absorbing protecting of the present embodiment band and the controlled electric linear driver of stroke, comprise the decelerator 3 of motor 1, sliding sleeve 2, the screw mechanism promoting sliding sleeve straight reciprocating motion, connection motor and screw mechanism and support the supporting arrangement of sliding sleeve, the thread bush 5 that described screw mechanism comprises screw mandrel 4 and coordinates with screw mandrel, the end of described sliding sleeve is fixedly connected with thread bush; Described supporting arrangement comprises the support column 6 be enclosed within outside screw mandrel structure, one end of described support column is fixed on the housing of decelerator, the other end of described support column is provided with guided bearing, described guided bearing comprises the bearing pedestal 7 be fixed in the pore of support column front end and the sliding bearing 8 be fixed in bearing pedestal, and described sliding bearing coordinates with sliding sleeve linear slide;
The displacement display 11 that described electric cylinder also comprises the displacement sensor for pull rope 9 be arranged on support column, the electric machine controller 10 be electrically connected with displacement sensor for pull rope and is electrically connected with displacement sensor for pull rope, described sliding sleeve is provided with and connects and the connecting plate 12 making stay cord axially parallel with sliding sleeve with the stay cord of displacement sensor for pull rope;
Described electric cylinder also comprises the bellows 13 that one end is connected with support column end part seal, the other end is connected with thread bush end part seal;
Rubber buffer 14 is provided with between described sliding sleeve and the end face of thread bush.
Antirust and the shock-absorbing protecting of the present embodiment band and the controlled electric linear driver of stroke, it detects the telescopic displacement of electric cylinder sliding sleeve by arranging displacement sensor for pull rope, detection signal input electric machine controller, when displacement sensor for pull rope detects that the telescopic displacement amount of sliding sleeve reaches the displacement preset in the controller, electric machine controller just controls motor stopping or reversion, thus make the stroke controllable precise of electric cylinder, and then make electric cylinder can easily be used for the accurate object controlled of drive displacement amount need; And the detection signal of displacement sensor for pull rope also shows by displacement display, thus make the displacement of electric cylinder visual, the stroke of more convenient people to electric cylinder regulates, and ease of use is better.
And the antirust and shock-absorbing protecting of band of the present invention and the controlled electric linear driver of stroke, it is sealed screw mandrel by bellows, and aqueous vapor can be avoided with screw mandrel to contact the problem causing screw mandrel corrosion to damage.
And the antirust and shock-absorbing protecting of the present embodiment band and the controlled electric linear driver of stroke; it by arranging rubber buffer between sliding sleeve and thread bush; in the courses of work such as electric motor starting, stopping, commutation; rubber buffer can cushion the axial impact force to screw mechanism screw thread pair; thus the damage of axial impact force double thread pair can be avoided, reduce the failure rate of electric cylinder.
And the antirust and shock-absorbing protecting of the present embodiment band and the controlled electric linear driver of stroke, the structure of its supporting arrangement is simple, and volume is little, lightweight, the antirust and shock-absorbing protecting of reduction band that can be very large and the manufacturing cost of the controlled electric linear driver of stroke.
As the improvement to the present embodiment, the power output shaft of described decelerator is connected by spring coupling 15 with screw mandrel, in the courses of work such as electric motor starting, stopping, commutation, the gear of decelerator and the screw thread pair of screw mechanism also can be subject to the impulsive force of circumferencial direction, by spring coupling, circumferencial direction impulsive force is cushioned, reducer gear and screw thread pair can be avoided to be hit damage, to reduce the failure rate of deviation correcting device further.
As the improvement to the present embodiment, be provided with lubricating grease 16 in described sliding sleeve, by lubricating grease, screw mechanism lubricated, the fretting wear of screw thread pair can be reduced, extend the life-span of electric cylinder.
As the improvement to the present embodiment; described band antirust with shock-absorbing protecting and the controlled electric linear driver of stroke also comprise be connected with the front end of sliding sleeve universal joint 16, be connected with universal joint before bearing 17 and the rear support 18 hinged with reducer shell, make to be with antirust and shock-absorbing protecting and the installation of the controlled electric linear driver of stroke is more convenient.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. the antirust and shock-absorbing protecting of band and the controlled electric linear driver of stroke, comprise motor, sliding sleeve, the straight reciprocating motion of promotion sliding sleeve screw mechanism, connect the decelerator of motor and screw mechanism and support the supporting arrangement of sliding sleeve, the thread bush that described screw mechanism comprises screw mandrel and coordinates with screw mandrel, the end of described sliding sleeve is fixedly connected with thread bush; It is characterized in that:
Described supporting arrangement comprises the support column be enclosed within outside screw mandrel structure, one end of described support column is fixed on the housing of decelerator, the other end of described support column is provided with guided bearing, described guided bearing comprises the bearing pedestal be fixed in the pore of support column front end and the sliding bearing be fixed in bearing pedestal, and described sliding bearing coordinates with sliding sleeve linear slide;
The displacement display that described electric cylinder also comprises the displacement sensor for pull rope be arranged on support column, the electric machine controller be electrically connected with displacement sensor for pull rope and is electrically connected with displacement sensor for pull rope, described sliding sleeve is provided with and connects and the connecting plate making stay cord axially parallel with sliding sleeve with the stay cord of displacement sensor for pull rope;
Described electric cylinder also comprises the bellows that one end is connected with support column end part seal, the other end is connected with thread bush end part seal;
Rubber buffer is provided with between described sliding sleeve and the end face of thread bush.
2. the antirust and shock-absorbing protecting of band according to claim 1 and the controlled electric linear driver of stroke, is characterized in that: the power output shaft of described decelerator is connected by spring coupling with screw mandrel.
3. the antirust and shock-absorbing protecting of band according to claim 1 and the controlled electric linear driver of stroke, is characterized in that: be provided with lubricating grease in described sliding sleeve.
4. the antirust and shock-absorbing protecting of band according to claim 1 and the controlled electric linear driver of stroke, is characterized in that: also comprise be connected with the front end of sliding sleeve universal joint, be connected with universal joint before bearing and the rear support hinged with reducer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924736.2A CN105391234A (en) | 2015-12-14 | 2015-12-14 | Dynamoelectric linear actuator with controllable journey and functions of anti-rusting and shock-absorbing protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924736.2A CN105391234A (en) | 2015-12-14 | 2015-12-14 | Dynamoelectric linear actuator with controllable journey and functions of anti-rusting and shock-absorbing protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105391234A true CN105391234A (en) | 2016-03-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510924736.2A Pending CN105391234A (en) | 2015-12-14 | 2015-12-14 | Dynamoelectric linear actuator with controllable journey and functions of anti-rusting and shock-absorbing protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105391234A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111559718A (en) * | 2020-05-22 | 2020-08-21 | 中国船舶重工集团公司第七0四研究所 | Large-stroke electric erecting device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712441A (en) * | 1985-05-13 | 1987-12-15 | Brunswick Valve & Control, Inc. | Position controlled linear actuator |
| JPH08228456A (en) * | 1994-12-19 | 1996-09-03 | Fuji Electric Co Ltd | Electrically driven cylinder with electronic sensor |
| CN200980019Y (en) * | 2006-10-18 | 2007-11-21 | 重庆海通机械制造有限公司 | An electrically driven cylinder controlled and served by the straight movement of a piston rod |
| CN202718952U (en) * | 2012-06-17 | 2013-02-06 | 福建省龙岩盛通液压有限公司 | Dustproof hydraulic oil cylinder |
| CN203377730U (en) * | 2013-08-06 | 2014-01-01 | 中国航天科技集团公司第九研究院第七七一研究所 | Electric cylinder possessing self-locking characteristic |
| CN204205814U (en) * | 2014-10-24 | 2015-03-11 | 南通德昊精密机械有限公司 | A kind of high-precision servo electric cylinder |
| CN205195487U (en) * | 2015-12-14 | 2016-04-27 | 重庆东登科技有限公司 | Take rust -resistantly and shock attenuation protection and controllable electronic jar of stroke |
-
2015
- 2015-12-14 CN CN201510924736.2A patent/CN105391234A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712441A (en) * | 1985-05-13 | 1987-12-15 | Brunswick Valve & Control, Inc. | Position controlled linear actuator |
| JPH08228456A (en) * | 1994-12-19 | 1996-09-03 | Fuji Electric Co Ltd | Electrically driven cylinder with electronic sensor |
| CN200980019Y (en) * | 2006-10-18 | 2007-11-21 | 重庆海通机械制造有限公司 | An electrically driven cylinder controlled and served by the straight movement of a piston rod |
| CN202718952U (en) * | 2012-06-17 | 2013-02-06 | 福建省龙岩盛通液压有限公司 | Dustproof hydraulic oil cylinder |
| CN203377730U (en) * | 2013-08-06 | 2014-01-01 | 中国航天科技集团公司第九研究院第七七一研究所 | Electric cylinder possessing self-locking characteristic |
| CN204205814U (en) * | 2014-10-24 | 2015-03-11 | 南通德昊精密机械有限公司 | A kind of high-precision servo electric cylinder |
| CN205195487U (en) * | 2015-12-14 | 2016-04-27 | 重庆东登科技有限公司 | Take rust -resistantly and shock attenuation protection and controllable electronic jar of stroke |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111559718A (en) * | 2020-05-22 | 2020-08-21 | 中国船舶重工集团公司第七0四研究所 | Large-stroke electric erecting device |
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| PB01 | Publication | ||
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Application publication date: 20160309 |