CN108443472A - A kind of three-section type electric telescopic rod - Google Patents
A kind of three-section type electric telescopic rod Download PDFInfo
- Publication number
- CN108443472A CN108443472A CN201810450612.9A CN201810450612A CN108443472A CN 108443472 A CN108443472 A CN 108443472A CN 201810450612 A CN201810450612 A CN 201810450612A CN 108443472 A CN108443472 A CN 108443472A
- Authority
- CN
- China
- Prior art keywords
- drum
- bezel ring
- bar
- telescopic rod
- electric telescopic
- 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.)
- Pending
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Classifications
-
- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
-
- 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
Abstract
The invention discloses a kind of three-section type electric telescopic rods, including fixed plate, the leading screw stepper motor being connected with fixed plate, the outer sleeve being connected with fixed plate, the feed screw nut being connected with bar core, the inner sleeve being arranged in outer sleeve, the bar core being arranged in interior bar, setting are put into interior bar, connecting plate, the first bezel ring, in inner sleeve, first draught line, first drum, connecting plate, the second draught line, the second drum；Connecting plate is connected with interior bar lower end；The lead screw shaft of motor is located at bar in-core；Bar core lower end is connected with inner sleeve lower end；First bezel ring, is connected with outer sleeve upper end, and inner sleeve outer circle is arranged in the first bezel ring, inner circle；First drum, the second drum are connected with bar core top and bottom respectively by shaft；First draught line one end is connected with fixed plate, and the other end is connected after bypassing the first drum with connecting plate；Second draught line one end is connected with connecting plate, and the other end is connected after bypassing the second drum with the first bezel ring,.This Telescopic rod structure is simple, transmission efficiency.
Description
Technical field
The invention belongs to electric telescopic rod technical field, especially a kind of three-section type electric telescopic rod.
Background technology
Electric telescopic rod be a kind of low energy consumption, low stain the driving dress that rotary motion is converted to linear reciprocal movement
It sets.Have been widely used for the fields such as medical instrument, industrial instrumentation, family's household.Most telescopic rods are currently on the market
Two section telescopic bars, two section telescopic bars are maximum, and the disadvantage is that when shrinking completely, minimum length is relatively large, is unfavorable for some design letters
About, the strictly limited occasion in space.Three sections and multi-joint telescoping device generally use hydraulic transmission mode, but complicated, processing
It is cumbersome, control the problems such as inaccurate.
To solve the above problems, in recent years, some domestic enterprises and colleges and universities have developed different structure and performance in succession
Three section electric flexible devices.Patent of invention " a kind of flexible dress of three section electrics that number of patent application is 2010105052321.X
Set ", by using motor to control on outside connecting rod, connected respectively by drawstring, spring between inner link and outside connecting rod, middle connecting rod
It connects, realizes the purpose of middle connecting rod and inner link simultaneous retractable, it is relatively accurate that motor controls outside connecting rod movement；But utilize spring
It is uncontrollable that elastic force, which makes inner link move synchronously,.The utility model patent " one that number of patent application is 201520039629.7
Kind three-section type pipe electric pushrod ", including outer tube, level-one screw rod, level-one nut, hollow two level screw rod.Two level nut, middle pipe
And inner tube；Two-stage screw-driven realizes the purpose of three pair rod simultaneous retractable.But the telescopic rod has a large amount of non-standard de-signs, structure multiple
It is miscellaneous；Two level screw-driven is less efficient, and relative motion surface abrasion is very fast so that service life reduces.Above-mentioned three-section type is electronic
Telescopic rod structure is complex, and transmission efficiency is relatively low.
Invention content
Technical problem solved by the invention is to provide a kind of three-section type electric telescopic rod, to solve existing three-section type electricity
Dynamic Telescopic rod structure is complicated, the low problem of transmission efficiency.
Realize that the technical solution of the object of the invention is：
A kind of three-section type electric telescopic rod, including leading screw stepper motor, fixed plate, outer sleeve, feed screw nut, inner sleeve,
Bar core, interior bar, the first bezel ring, the first draught line, the first drum, connecting plate, the second draught line, the second drum；
The leading screw stepper motor is connected with fixed plate, and the lead screw shaft of leading screw stepper motor passes through fixed plate centre bore；Institute
It states outer sleeve and is fixed on dead plate upper end；The inner sleeve is arranged in outer sleeve, and the connecting plate, interior bar are arranged in inner sleeve
It is interior；The connecting plate is connected with interior bar lower end；The bar core is arranged in interior bar；The feed screw nut is connected with bar core lower end；
The lead screw shaft of the leading screw stepper motor is located at bar in-core；Bar core lower end is connected with inner sleeve lower end；First bezel ring,
It is connected with outer sleeve upper end, and inner sleeve outer circle is arranged in the first bezel ring, inner circle；First drum passes through shaft and bar core
Upper end is connected；Second drum is connected by shaft with bar core lower end；The drum can be rotated relative to shaft；Described first leads
Lead one end is connected with fixed plate, and the other end is connected after bypassing the first drum with connecting plate upper end；Second draught line one end
It is connected with connecting plate lower end, the other end is connected after bypassing the second drum with the first bezel ring,.
Compared with prior art, the present invention its remarkable advantage：
(1) three-section type electric telescopic rod of the invention, two pole parts are while synchronization telescope to improve stretching speed.
(2) present invention bypasses upper and lower trough of belt bearing using steel wire rope, drives the reciprocal of interior bar to move synchronously, has low noise
Sound, feature at low cost, and improve transmission efficiency.
(3) not only each limit switch is limited the present invention up and down, and has boss to carry out mechanical position limitation up and down, is carried
The high reliability and security of the present apparatus.
(4) bezel ring, is arranged at outer bar of the present invention, intermediate bar top, this bezel ring, is polytetrafluoroethylene material, there is self-lubricating
Characteristic reduces frictional force when rod piece moves back and forth, reduces noise；And when rod piece being made to stretch out relatively long distance, also have
Good concentricity
(5) two steel wire ropes are through respectively on up and down adjustment screw, steel wire rope can be made to keep tensioning by adjusting screw, subtracted
Few synchronous motion error, improves the precision of motion control.
Present invention is further described in detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the three-section type electric telescopic rod general structure schematic diagram of the present invention.
Fig. 2 is the front cross-sectional schematic diagram of the three-section type electric telescopic rod of the present invention.
Fig. 3 is the side profile schematic diagram of the three-section type electric telescopic rod of the present invention.
Specific implementation mode
In order to illustrate technical scheme of the present invention and technical purpose, below in conjunction with the accompanying drawings and specific embodiment is the present invention
It is further to introduce.
In conjunction with Fig. 1-Fig. 3, a kind of three-section type electric telescopic rod of the invention, including it is leading screw stepper motor 1, fixed plate 2, outer
Sleeve 3, feed screw nut 4, inner sleeve 5, bar core 6, interior bar 7, the first bezel ring, 8, the first draught line 11, the first drum 12, connecting plate
13, the second draught line 21, the second drum 20；
The leading screw stepper motor 1 is connected with fixed plate 2, and the lead screw shaft of leading screw stepper motor 1 passes through 2 center of fixed plate
Hole；The outer sleeve 3 is fixed on 2 upper end of fixed plate；The inner sleeve 5 is arranged in outer sleeve 3, the connecting plate 13, interior bar 7
It is arranged in inner sleeve 5；The connecting plate 13 is connected with 7 lower end of interior bar；The bar core 6 is arranged in interior bar 7；The leading screw spiral shell
Mother 4 is connected with 6 lower end of bar core；The lead screw shaft of the leading screw stepper motor 1 is located in bar core 6；6 lower end of bar core and inner sleeve
5 lower ends are connected；First bezel ring, 8 is connected with 3 upper end of outer sleeve, and 5 outer circle of inner sleeve is arranged in 8 inner circle of the first bezel ring,；
First drum 12 is connected by shaft 19 with 6 upper end of bar core；Second drum 20 passes through shaft 19 and 6 lower end phase of bar core
Even；The drum can be rotated relative to shaft 19；Described first draught line, 11 one end is connected with fixed plate 2, and the other end bypasses first
It is connected with 13 upper end of connecting plate after drum 12；Described second draught line, 21 one end is connected with 13 lower end of connecting plate, and the other end bypasses
It is connected with the first bezel ring, 8 after second drum 20.
Further, at least provided with a guide pad 18 in 3 lower end outer circle of the outer sleeve；3 inner circle edge of the outer sleeve
Axially at least provided with a guide groove；The guide pad 18 is slided along guide groove；Since outer sleeve and bar core 6 are connected；So that outer
When sleeve 3 moves up and down with bar core 6, by the effect of guide pad 18, it can prevent bar core 6 from being rotated together with feed screw nut 4.
Further, be equipped with one week wire casing in the outer circle of first drum 12, the second drum 20, with to draught line into
Row is oriented to.
Further, first draught line 11 is connected with fixed plate 2 by the first adjusting screw 16；Second traction
It is connected by the second adjusting screw 9 between line 21 and the first bezel ring, 8；First adjusting screw 16, the second adjusting screw 9 pass through
Screw thread is connected with fixed plate 2, the first bezel ring, 8 respectively；By turning adjusting screw, the traction of the first draught line 11, second is adjusted
The length of line 21 so that be in tensioning state when draught line is installed, avoid the error of processing, installation.To reduce synchronous fortune
Dynamic error, improves the precision of motion control.
Further, 5 upper end of the inner sleeve is further fixed on the second bezel ring, 10；7 outer circle of the interior bar is located at the second bezel ring,
In 10 inner circles, radial to interior bar 7 it can be limited by the second bezel ring, 10 so that interior bar axial stretching is more steady.
Further, first bezel ring, 8, the second bezel ring, 10 are all made of poly- four not vinyl materials, there is the spy of self-lubricating
Property, reduce frictional force when rod piece moves back and forth, reduces noise.When simultaneously so that rod piece stretches out relatively long distance, also have
Good concentricity.
Further, the fixed plate 2 is fixed with the first travel switch 15, and the first travel switch 15 is located at inner sleeve 5
Lower end；3 upper end of the outer sleeve is equipped with the second travel switch 17, and the second travel switch 17 stretches into 3 inner circle of outer sleeve；Work as inner sleeve
When 5 up and down motion the first travel switch 15 of triggering of cylinder or the second travel switch 17, leading screw stepper motor 1 stops operating, to flexible
The stroke of bar carries out electric limiting, improves the reliability and security of the present apparatus.
Further, first travel switch 15 is correlation optoelectronic switch；6 lower end of bar core is fixed with slotted vane
14；When bar core 6 moves downward, slotted vane 14 cover the first travel switch 15 to penetrating light, then the first travel switch 15 is sent out
Signal, leading screw stepper motor 1 stop operating.
The present invention three-section type electric telescopic rod operation principle and use process is as follows：Elongation process drives silk first
The lead screw shaft of thick stick stepper motor 1 rotates, and leading screw drives feed screw nut 4 to move upwards, and bar core 6 and inner sleeve 5 move upwardly together；
Bar core 6 moves upwards, and pulls interior bar 7 to move upwards together by the first draught line 11.At this time the second drum 20 with bar core 6 to
Upper movement；
Since 11 length of the first draught line is constant, so connecting plate 13 and interior bar 7 can be upward together by the first draught line 11
It pulls out, when interior bar 7 moves upwards, the second draught line 21 can haul interior bar 7, so that interior bar 7 will not be because of inertia in leading screw
Stepper motor 1 also continues to move upwards when stopping, and realizes the movement and stopping simultaneously synchronous with bar core 6 of interior bar 7.Similarly,
When leading screw stepper motor 1 inverts, the second draught line 21 pulls interior bar 7 to move downward, but the first draught line 11 has centainly
Reversed traction interior bar 7 power, realize the movement and stopping simultaneously synchronous with bar core 6 of interior bar 7.The structure of the present invention is relatively tight
It gathers, 7 liang of bar core 6, interior bar pole parts are while synchronization telescope to improve stretching speed.The present invention is using steel wire rope around upper
Lower band groove bearing drives the reciprocal of interior bar 7 to move synchronously, it is controllable to have the characteristics that low noise, at low cost move synchronously, and carry
High transmission efficiency.And the parts of telescopic rod of the present invention mostly use standard component, it is simple in structure.
Claims (8)
1. a kind of three-section type electric telescopic rod, which is characterized in that including leading screw stepper motor (1), fixed plate (2), outer sleeve
(3), feed screw nut (4), inner sleeve (5), bar core (6), interior bar (7), the first bezel ring, (8), the first draught line (11), the first drum
(12), connecting plate (13), the second draught line (21), the second drum (20)；
The leading screw stepper motor (1) is connected with fixed plate (2), and the lead screw shaft of leading screw stepper motor (1) passes through in fixed plate (2)
Heart hole；The outer sleeve (3) is fixed on fixed plate (2) upper end；Inner sleeve (5) setting is in outer sleeve (3), the connection
Plate (13), interior bar (7) setting are in inner sleeve (5)；The connecting plate (13) is connected with interior bar (7) lower end；The bar core (6) sets
It sets in interior bar (7)；The feed screw nut (4) is connected with bar core (6) lower end；The leading screw axle position of the leading screw stepper motor (1)
In bar core (6)；Bar core (6) lower end is connected with inner sleeve (5) lower end；First bezel ring, (8) and outer sleeve (3) upper end
It is connected, and inner sleeve (5) outer circle is arranged in the first bezel ring, (8) inner circle；First drum (12) passes through shaft (19) and bar
Core (6) upper end is connected；Second drum (20) is connected by shaft (19) with bar core (6) lower end；The drum opposite can turn
Axis (19) rotates；Described first draught line (11) one end is connected with fixed plate (2), the other end around the first drum (12) afterwards with even
Fishplate bar (13) is connected；Described second draught line (21) one end is connected with connecting plate (13), after the other end bypasses the second drum (20)
It is connected with the first bezel ring, (8).
2. a kind of three-section type electric telescopic rod according to claim 1, which is characterized in that in outer sleeve (3) outer circle
At least provided with a guide pad (18)；Outer sleeve (3) inner circle is in an axial direction at least provided with a guide groove；The guide pad
(18) it is slided along guide groove.
3. a kind of three-section type electric telescopic rod according to claim 1, which is characterized in that first drum (12),
One week wire casing is equipped in the outer circle of two drums (20).
4. a kind of three-section type electric telescopic rod according to claim 1, which is characterized in that first draught line (11) with
Fixed plate (2) is connected by the first adjusting screw (16)；Pass through second between second draught line (21) and the first bezel ring, (8)
Adjusting screw (9) is connected；First adjusting screw (16), the second adjusting screw (9) by screw thread respectively with fixed plate (2),
First bezel ring, (8) is connected, and the first adjusting screw (16), the second adjusting screw (9) are so that be in tensioning state when draught line is installed.
5. a kind of three-section type electric telescopic rod according to claim 1, which is characterized in that inner sleeve (5) upper end is also
It is fixed with the second bezel ring, (10)；Interior bar (7) outer circle is located in the second bezel ring, (10) inner circle, and the second bezel ring, (10) is to interior bar
(7) radial to be limited.
6. a kind of three-section type electric telescopic rod according to claim 5, which is characterized in that first bezel ring, (8), second
Bezel ring, (10) is all made of poly- four not vinyl materials.
7. a kind of three-section type electric telescopic rod according to claim 1, which is characterized in that the fixed plate (2) is fixed with
First travel switch (15), and the first travel switch (15) is located at inner sleeve (5) lower end；Outer sleeve (3) upper end is equipped with the
Two travel switches (17), and the second travel switch (17) stretches into outer sleeve (3) inner circle；When inner sleeve (5) moves up and down triggering the
When one stroke switchs (15) or the second travel switch (17), leading screw stepper motor (1) stops operating.
8. a kind of three-section type electric telescopic rod according to claim 7, which is characterized in that first travel switch (15)
For correlation optoelectronic switch；Bar core (6) lower end is fixed with slotted vane (14)；When bar core (6) moves downward, slotted vane (14) hides
Firmly the first travel switch (15) to penetrating light, then the first travel switch (15) sends out signal, and leading screw stepper motor (1) stops turning
It is dynamic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810450612.9A CN108443472A (en) | 2018-05-11 | 2018-05-11 | A kind of three-section type electric telescopic rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810450612.9A CN108443472A (en) | 2018-05-11 | 2018-05-11 | A kind of three-section type electric telescopic rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108443472A true CN108443472A (en) | 2018-08-24 |
Family
ID=63203007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810450612.9A Pending CN108443472A (en) | 2018-05-11 | 2018-05-11 | A kind of three-section type electric telescopic rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443472A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139635A (en) * | 2018-10-29 | 2019-01-04 | 李展 | A kind of high-precision telescopic rod |
| CN113247814A (en) * | 2020-02-10 | 2021-08-13 | 北京二郎神科技有限公司 | Telescopic device, building and goods conveying system thereof |
| CN113730196A (en) * | 2021-07-13 | 2021-12-03 | 中国科学院深圳先进技术研究院 | Lower limb exoskeleton robot |
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| CN201818758U (en) * | 2010-10-13 | 2011-05-04 | 浙江工业大学 | Three-section electric telescopic device |
| CN102203462A (en) * | 2008-11-05 | 2011-09-28 | 日立建机株式会社 | Linear actuator |
| CN203883608U (en) * | 2014-06-10 | 2014-10-15 | 南宁市合辰科技有限公司 | Electric push rod |
| CN105565200A (en) * | 2016-02-25 | 2016-05-11 | 常州市凯迪电器有限公司 | Three-segment type linear actuator and driving assembly thereof |
| CN106051098A (en) * | 2016-07-30 | 2016-10-26 | 北京工业大学 | Telescopic retractable device |
| JP2017101721A (en) * | 2015-11-30 | 2017-06-08 | 株式会社アイエイアイ | Actuator |
| CN106877561A (en) * | 2017-03-01 | 2017-06-20 | 江苏国电铁塔有限公司 | Electric pushrod and its protection device and guard method |
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2018
- 2018-05-11 CN CN201810450612.9A patent/CN108443472A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102203462A (en) * | 2008-11-05 | 2011-09-28 | 日立建机株式会社 | Linear actuator |
| CN201818758U (en) * | 2010-10-13 | 2011-05-04 | 浙江工业大学 | Three-section electric telescopic device |
| CN203883608U (en) * | 2014-06-10 | 2014-10-15 | 南宁市合辰科技有限公司 | Electric push rod |
| JP2017101721A (en) * | 2015-11-30 | 2017-06-08 | 株式会社アイエイアイ | Actuator |
| CN105565200A (en) * | 2016-02-25 | 2016-05-11 | 常州市凯迪电器有限公司 | Three-segment type linear actuator and driving assembly thereof |
| CN106051098A (en) * | 2016-07-30 | 2016-10-26 | 北京工业大学 | Telescopic retractable device |
| CN106877561A (en) * | 2017-03-01 | 2017-06-20 | 江苏国电铁塔有限公司 | Electric pushrod and its protection device and guard method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139635A (en) * | 2018-10-29 | 2019-01-04 | 李展 | A kind of high-precision telescopic rod |
| CN113247814A (en) * | 2020-02-10 | 2021-08-13 | 北京二郎神科技有限公司 | Telescopic device, building and goods conveying system thereof |
| CN113730196A (en) * | 2021-07-13 | 2021-12-03 | 中国科学院深圳先进技术研究院 | Lower limb exoskeleton robot |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20180824 |