CN104882996A - Improved structure of direct-connection type electric cylinder - Google Patents
Improved structure of direct-connection type electric cylinder Download PDFInfo
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- CN104882996A CN104882996A CN201510309875.4A CN201510309875A CN104882996A CN 104882996 A CN104882996 A CN 104882996A CN 201510309875 A CN201510309875 A CN 201510309875A CN 104882996 A CN104882996 A CN 104882996A
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- electric cylinder
- screw mandrel
- screw
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- multidiameter
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Abstract
The invention provides an improved structure of a direct-connection type electric cylinder. The invention, which belongs to the design field of the mechanical structure of the direct-connection type electric cylinder, especially relates to a connecting way of relatively-high-power motor with a large motor axle diameter and a relatively-small-diameter lead screw, wherein the connecting way of parts of the electric cylinder is simplified. According to the invention, the existing connection way of the lead screw and the bearing sleeve is changed. On the basis of the optical axis cooperation, a threaded screw mode is added. Moreover, a coupler is connected with a connecting bearing sleeve and a motor shaft instead of connecting the lead screw directly. Meanwhile, on the basis of the improved part structure, connection of the electric cylinder is realized by using fewer screws. Therefore, the internal structure of the electric cylinder becomes simple and compact; and the manufacturing cost is low.
Description
Technical field
The invention belongs to direct-connected electric cylinder field of mechanical structure design, particularly relate to the reasonable connected mode of a kind of heavy-duty motor and minor diameter screw mandrel, and simplify the connected mode between electric cylinder part.
Background technology
Along with the increase of electric cylinder application, the requirement of client to electric cylinder is more and more higher, and some industry requires higher to the speed of electric cylinder and acceleration, and this just means needs to select that nominal diameter is constant and helical pitch becomes large screw mandrel.When electric cylinder thrust is constant, speed and acceleration larger, motor need moment of torsion and power larger.In this case the connected mode of a kind of heavy-duty motor and minor diameter screw mandrel has just been related to.
At present, on market, the motor shaft of direct-connected electric cylinder is connected by shaft coupling with screw axis, screw axis must have two joint ladder optical axises, first segment ladder optical axis and bearing holder (housing, cover) connect, second section ladder optical axis and shaft coupling connect, the increase of ladder optical axis makes the minimum diameter of axle of screw mandrel reduce, and the intensity of axle is weakened, and the moment of torsion that can bear reduces.When screw mandrel is connected with the motor shaft in larger axis footpath by shaft coupling, because the screw mandrel diameter of axle is less, usually cause screw mandrel moment of torsion inadequate, or during type selecting, do not have suitable shaft coupling available.In this case just need select the screw mandrel in larger axis footpath, thus make the corresponding increase of other parts of electric cylinder, cause the waste of resource, add the manufacturing cost of electric cylinder.
In addition, the connected mode between current electric cylinder parts is comparatively complicated, often needs more screw to connect, so both add part processing cost between two parts, more loaded down with trivial details when also making to assemble.
Summary of the invention
In order to solve the connected mode problem of heavy-duty motor and minor diameter screw mandrel, simplify the connected mode between electric cylinder part, the present invention has structurally carried out innovating improving to electric cylinder structure.
The present invention solves the technical scheme that its technical problem adopts: on the connectivity problem of motor shaft and screw axis, change the mechanical structure of screw mandrel and bearing holder (housing, cover), screw mandrel first segment multidiameter is designed to optical axis, external threading on second section multidiameter, distal end faces tapping female bore.Bearing holder (housing, cover) is processed into shoulder hole, and first segment shoulder hole coordinates, for positioning and guiding with screw mandrel first segment multidiameter; Car internal thread in second section shoulder hole, screws with screw mandrel second section multidiameter.Meanwhile, in second section shoulder hole, be screwed into a stud, form two screw thread uncoupling gear.With screw, stud and screw mandrel are coupled together again.Last shaft coupling connecting axle bearing sleeve and motor shaft; Simplifying in the connected mode between part, first isolate support ring two ends and respectively have locating and machining seam and two pin-and-holes, ensure that motor shaft and the concentric of bearing and the relative rotation preventing part, then with inner hole of cylinder step surface location, finally under the effect of pull bar, part is compressed.
The invention has the beneficial effects as follows: when motor shaft and the screw axis diameter of axle differ larger, the screw mandrel selecting larger axis footpath can be avoided, make the corresponding reduction of each related components size, and the connected mode simplified between most part, reach and make electric cylinder internal structure more simply compact, the object that manufacturing cost is lower.
Accompanying drawing explanation
Fig. 1 electric structure figure.
1. feed screw nut pairs, 2. bearing holder (housing, cover), 3. bearing pedestal, 4. bearing, 5. straight pin, 6. locking nut in figure, 7. stud, 8. soket head cap screw, 9. motor, 10. hex nut, 11. front end housing flanges, 12. pull bars, 13. circle cylinder barrels, 14. shaft couplings, 15. isolation support rings, 16, motor adpting flange.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
In the drawings, screw mandrel axle stretch end (1) is connected by tape guide screw thread with bearing holder (housing, cover) (2), bearing (4) inner ring is arranged on bearing holder (housing, cover) (2), locked by locking nut (6), bearing holder (housing, cover) (2) endoporus is screwed into stud (7), with soket head cap screw (8), stud (7) is connected fastening with screw mandrel (1) axle stretch end, shaft coupling (14) connecting axle bearing sleeve (2) and motor shaft (9).Above step achieves the connection of relative heavy-duty motor and relative minor diameter screw mandrel.
Bearing (4) outer ring is contained in bearing pedestal (3), the end contact of the shoulder hole of bearing pedestal (3) upper surface and circle cylinder barrel (13), lower surface contacts with the upper surface of isolation support ring (15), and be furnished with straight pin (5), the lower surface of isolation support ring (13) contacts with the upper surface of motor adpting flange (16), and be furnished with straight pin (5), (16) have attacked screwed hole with motor adpting flange, pull bar (12) is screwed in screwed hole, railing (12) two ends are all multidiameter and have external screw thread, the upper end of pull bar (12) is by the through hole on front end housing flange (11), then by hex nut (10) steady brace, compress front end housing flange (11) simultaneously.Above step makes substantially not need screw to connect between part, simplifies design of part.
Claims (4)
1. an architecture advances for direct-connected electric cylinder, relates to the reasonable connected mode of a kind of heavy-duty motor and minor diameter screw mandrel, and simplifies the connected mode between electric cylinder part.
2. the structure of described direct-connected electric cylinder is required according to right 1, it is characterized in that: in the connected mode of motor shaft and screw axis, change the mechanical structure of screw mandrel and bearing holder (housing, cover), screw mandrel first segment multidiameter is designed to optical axis, external threading on second section multidiameter, distal end faces tapping female bore.
3. require the structure of described direct-connected electric cylinder according to right 1, it is characterized in that bearing holder (housing, cover) is processed into shoulder hole, first segment shoulder hole coordinates, for positioning and guiding with screw mandrel first segment multidiameter; Car internal thread in second section shoulder hole, screws with screw mandrel second section multidiameter, meanwhile, is screwed into a stud in second section shoulder hole, forms two screw thread uncoupling gear, then stud and screw mandrel is coupled together with screw; Last shaft coupling connecting axle bearing sleeve and motor shaft.
4. the structure of described direct-connected electric cylinder is required according to right 1, it is characterized in that simplifying in the connected mode between part, first isolate support ring two ends and respectively have locating and machining seam and two pin-and-holes, ensure that motor shaft and the concentric of bearing and the relative rotation preventing part, then with inner hole of cylinder step surface location, finally under the effect of pull bar, part is compressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510309875.4A CN104882996A (en) | 2015-06-09 | 2015-06-09 | Improved structure of direct-connection type electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510309875.4A CN104882996A (en) | 2015-06-09 | 2015-06-09 | Improved structure of direct-connection type electric cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104882996A true CN104882996A (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510309875.4A Pending CN104882996A (en) | 2015-06-09 | 2015-06-09 | Improved structure of direct-connection type electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104882996A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914939A (en) * | 2016-05-31 | 2016-08-31 | 武汉穆特科技有限公司 | Novel electric cylinder structure |
| WO2017148360A1 (en) * | 2016-02-29 | 2017-09-08 | 天津科为客科技有限公司 | Linear transmission device, disassembly method, and linear transmission device capable of preventing jamming due to preloading |
| CN108390502A (en) * | 2018-03-13 | 2018-08-10 | 深圳市湘聚实业有限公司 | Big stroke precision second-stage electric cylinder |
| CN109167472A (en) * | 2018-11-01 | 2019-01-08 | 横店集团英洛华电气有限公司 | Electric pushrod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050160846A1 (en) * | 2004-01-20 | 2005-07-28 | Yi-Chung Chiang | Linear actuator |
| CN201747746U (en) * | 2010-07-14 | 2011-02-16 | 广州永联钢结构有限公司 | Riveted bolt-on anti-loosing and anti-theft combined structure |
| CN103062351A (en) * | 2012-12-23 | 2013-04-24 | 浙江大学 | Light-load ball screw pair installing and supporting device |
| JP2014101979A (en) * | 2012-11-22 | 2014-06-05 | Mitsuba Corp | Linear actuator |
| CN204376607U (en) * | 2015-01-30 | 2015-06-03 | 厦门欣富地智能科技有限公司 | A kind of electric cylinder |
-
2015
- 2015-06-09 CN CN201510309875.4A patent/CN104882996A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050160846A1 (en) * | 2004-01-20 | 2005-07-28 | Yi-Chung Chiang | Linear actuator |
| CN201747746U (en) * | 2010-07-14 | 2011-02-16 | 广州永联钢结构有限公司 | Riveted bolt-on anti-loosing and anti-theft combined structure |
| JP2014101979A (en) * | 2012-11-22 | 2014-06-05 | Mitsuba Corp | Linear actuator |
| CN103062351A (en) * | 2012-12-23 | 2013-04-24 | 浙江大学 | Light-load ball screw pair installing and supporting device |
| CN204376607U (en) * | 2015-01-30 | 2015-06-03 | 厦门欣富地智能科技有限公司 | A kind of electric cylinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017148360A1 (en) * | 2016-02-29 | 2017-09-08 | 天津科为客科技有限公司 | Linear transmission device, disassembly method, and linear transmission device capable of preventing jamming due to preloading |
| CN105914939A (en) * | 2016-05-31 | 2016-08-31 | 武汉穆特科技有限公司 | Novel electric cylinder structure |
| CN108390502A (en) * | 2018-03-13 | 2018-08-10 | 深圳市湘聚实业有限公司 | Big stroke precision second-stage electric cylinder |
| CN109167472A (en) * | 2018-11-01 | 2019-01-08 | 横店集团英洛华电气有限公司 | Electric pushrod |
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Application publication date: 20150902 |
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| WD01 | Invention patent application deemed withdrawn after publication |