CN105673791A - Multistage transmission mechanism - Google Patents
Multistage transmission mechanism Download PDFInfo
- Publication number
- CN105673791A CN105673791A CN201610148215.7A CN201610148215A CN105673791A CN 105673791 A CN105673791 A CN 105673791A CN 201610148215 A CN201610148215 A CN 201610148215A CN 105673791 A CN105673791 A CN 105673791A
- Authority
- CN
- China
- Prior art keywords
- inner cylinder
- transmission mechanism
- screw rod
- different levels
- multistage transmission
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 230000000875 corresponding Effects 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 206010051856 Primary transmission Diseases 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 210000004907 Glands Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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
- 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
- F16H25/2056—Telescopic screws with at least three screw members in coaxial arrangement
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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
- 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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- 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
- F16H2025/204—Axial sliding means, i.e. for rotary support and axial guiding of nut or screw shaft
Abstract
The invention relates to a multistage transmission mechanism. The multistage transmission mechanism is simple in structure, convenient to use and capable of achieving the large linear stroke in the small space and meanwhile can accurately ensure the fixed transmission relation between the input rotating angle and the end point linear motion position. The multistage transmission mechanism comprises an outer cylinder barrel and transmission mechanisms, wherein each transmission mechanism is composed of an inner cylinder barrel, a screw rod, a nut, a guide belt and an anti-rotating key; the transmission mechanisms achieve multistage transmission. The outer cylinder barrel is connected with the first-stage transmission screw rod through bearings, and the inner cylinder barrel of the last stage is fixedly connected with the corresponding nut located on the screw rod of the corresponding stage; the inner cylinder barrels of other stages are in transmission connection with the nuts of the screw rods of the corresponding stages through bearings; the nuts of all stages are fixedly connected with the screw rods of the post stages; and the guide belts and the anti-rotating keys are arranged between the cylinder barrel walls, and the inner cylinder barrels slide in the axial direction through the guide belts.
Description
Technical field
The present invention relates to a kind of multistage transmission mechanism, belong to industrial automation.
Background technology
It is rectilinear motion that industrial automation it is frequently necessary to convert rotational motion, owing to being limited by space, will make bigger rectilinear path, simultaneously need to accurately control straight running position in less space. At present, existing multistage transmission mechanism uses the guarantee cylinder barrels at different levels such as clutch, friction plate to stretch in order, uses additional displacement transducer to read final position simultaneously. Above-mentioned multistage transmission mechanism has structure complexity, poor accuracy, it is impossible to realize the fixed delivery relation of the input anglec of rotation and terminal straight running position; Working space is big, is difficulty with making bigger rectilinear path in less space.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the present invention provide a kind of simple in construction, easy to use, can make bigger rectilinear path in less space, can accurately ensure the multistage transmission mechanism of one of the input anglec of rotation and the fixed delivery relation of terminal straight running position simultaneously.
For achieving the above object, the technical solution used in the present invention is: a kind of multistage transmission mechanism, and including outer cylinder and the transmission mechanism that is made up of inner cylinder tube, screw rod, nut, guidance tape, antirotation keys, described transmission mechanism is multistage transmission; Outer cylinder is connected with primary transmission screw rod by bearing; Afterbody inner cylinder tube is fixing with the nut at the corresponding levels being arranged on screw rod at the corresponding levels to be connected, and other inner cylinder tubes at different levels are connected with the nut rotation at the same level being arranged on screw rod at the same level by bearing; Nuts at different levels are fixing with rear stage screw rod to be connected; Arranging guidance tape and antirotation keys between cylinder barrel wall, inner cylinder tube is slid axially by guidance tape.
As a further improvement on the present invention, nuts at different levels, screw rod pitch equal.
As a further improvement on the present invention, under retracted mode of the present invention, outer cylinder and inner cylinder tube external part at different levels are at grade; After contraction, the entire length of the present invention is shorter, is conducive to meeting installing space little, the instructions for use that transmission length is big.
The beneficial effect of the invention
The present invention adopts the structure such as outer cylinder and multistage inner cylinder tube, multi-stage screw and multiple nuts, it is achieved multistage transmission, makes the rectilinear motion stroke length much larger than retracted mode, it is possible to make bigger rectilinear path in less space, simple in construction;Inner cylinder tube is slid axially by guidance tape, and avoids rotation under antirotation keys effect; Being connected except afterbody inner cylinder tube and the nut being arranged on screw rod at the corresponding levels are fixing by adopting, other inner cylinder tubes at different levels are connected with the nut rotation being arranged on screw rod at the same level by bearing; No matter whether middle screw rods at different levels relatively rotate with this grade of nut, and the relative outer cylinder of afterbody cylinder barrel, all without rotating, is always to maintain rectilinear motion, say, that afterbody nut does not rotate all the time relative to outer cylinder; The anglec of rotation of one-level screw rod determines afterbody inner cylinder tube straight-line displacement, it is ensured that the input anglec of rotation and the fixed delivery relation of terminal straight running position, can pass through input angle and accurately draw straight-line displacement, easy to operate.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the schematic diagram of retracted mode of the present invention.
Detailed description of the invention:
As it can be seen, a kind of multistage transmission mechanism, including outer cylinder 3 and multistage transmission mechanism 1, every one-level transmission mechanism includes inner cylinder tube 4, screw rod 2, nut 7, guidance tape 9 and antirotation keys 8; Outer cylinder 3 is connected with one-level screw rod 2 by two bearings 6; Afterbody inner cylinder tube 4 is fixing with the nut at the corresponding levels 7 being arranged on screw rod 2 at the corresponding levels to be connected, and other inner cylinder tubes 4 at different levels are rotationally connected with the nut at the same level 7 being arranged on screw rod 2 at the same level by bearing 6; Being provided with bearing gland 5 on bearing 6, nuts 7 at different levels are fixing with rear stage screw rod 2 to be connected; Guidance tape 9 and antirotation keys 8 are set between cylinder barrel wall, antirotation keys 8 is separately fixed on outer cylinder and inner cylinder tube 4 by front nut 10, axially disposed on inner cylinder tube 2 outer wall have keyway 11, when inner cylinder tube 4 stretches, antirotation keys 8 is slided in keyway 11, it is ensured that inner cylinder tubes 4 at different levels can only be slid axially by guidance tape 9.
Nuts 7 at different levels, screw rod 2 pitch equal.
The present invention is under retracted mode, and outer cylinder 3 and inner cylinder tube at different levels 4 external part are at grade.
Guidance tapes 9 at different levels are forward and backward 2, are separately positioned on the rear and front end of inner cylinder tube 4 wall at different levels.
Bearing 6 between inner cylinder tubes 4 at different levels and nut 7 at the same level, the bearing 6 between outer cylinder 3 and one-level screw rod 2, according to the working condition used and stressing conditions, the bearing 6 of identical or different type can be selected.
In using, rotate one-level screw rod 5, it is connected owing to nuts 7 at different levels are fixing with rear stage screw rod 2, other nuts 7 at different levels except afterbody nut 7 can be rotated by bearing 6 in inner cylinder tube 4 at the corresponding levels, whether whether inner cylinder tube 4 be subjected to displacement and depend on gravity, the factors such as frictional force, afterbody nut 7 is fixing with afterbody inner cylinder tube 4 to be connected, again because of nuts at different levels, the pitch of screw rod is equal, no matter other screw rods 5 at different levels are with whether nut 12 at the same level relatively rotates, capital ensures that afterbody nut 8 drives the linear position of afterbody inner cylinder tube 4 constant with the transitive relation of one-level screw rod 5 anglec of rotation, the displacement of middle inner cylinder tubes 4 at different levels is allocated according to gravity, frictional force etc., determine whether it is subjected to displacement, but inner cylinder tube 4 relative displacement sums at different levels are equal to the displacement of afterbody inner cylinder tube 4, it is possible to accurately ensure that one-level screw rod 5 inputs the fixed delivery relation of the anglec of rotation and afterbody inner cylinder tube 4 terminal straight running position.
Claims (5)
1. a multistage transmission mechanism, it is characterised in that including outer cylinder and the transmission mechanism being made up of inner cylinder tube, screw rod, nut, guidance tape, antirotation keys, described transmission mechanism is multistage transmission;Outer cylinder is connected with primary transmission screw rod by bearing; Afterbody inner cylinder tube is fixing with the nut at the corresponding levels being arranged on screw rod at the corresponding levels to be connected, and other inner cylinder tubes at different levels are connected with the nut rotation at the same level being arranged on screw rod at the same level by bearing; Nuts at different levels are fixing with rear stage screw rod to be connected; Arranging guidance tape and antirotation keys between cylinder barrel wall, inner cylinder tube is slid axially by guidance tape.
2. a kind of multistage transmission mechanism as claimed in claim 1, it is characterised in that nuts at different levels, screw rod pitch equal.
3. a kind of multistage transmission mechanism as claimed in claim 1, it is characterised in that under retracted mode, outer cylinder and inner cylinder tube external part at different levels are at grade.
4. a kind of multistage transmission mechanism as claimed in claim 3, it is characterised in that inner cylinder tube relative displacement sums at different levels are equal to the displacement of afterbody inner cylinder tube.
5. a kind of multistage transmission mechanism as claimed in claim 1, it is characterised in that guidance tapes at different levels are 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148215.7A CN105673791A (en) | 2016-03-16 | 2016-03-16 | Multistage transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148215.7A CN105673791A (en) | 2016-03-16 | 2016-03-16 | Multistage transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673791A true CN105673791A (en) | 2016-06-15 |
Family
ID=56310539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610148215.7A Pending CN105673791A (en) | 2016-03-16 | 2016-03-16 | Multistage transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673791A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523635A (en) * | 2016-12-30 | 2017-03-22 | 亿嘉和科技股份有限公司 | Spiral telescopic device |
| WO2020015743A1 (en) * | 2018-07-20 | 2020-01-23 | 捷世达企业股份有限公司 | Linear actuation structure |
| CN111409100A (en) * | 2020-04-16 | 2020-07-14 | 广东博智林机器人有限公司 | Telescopic mechanism, mechanical arm and construction robot |
| CN113561857A (en) * | 2021-08-05 | 2021-10-29 | 诺创汽车科技(上海)有限公司 | Propulsion mechanism and vehicle seat |
| CN114593185A (en) * | 2022-03-07 | 2022-06-07 | 北京航空航天大学 | Large-stroke multistage self-locking anti-sticking electric telescopic mechanism |
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| JP2002327824A (en) * | 2001-05-08 | 2002-11-15 | Taiyo Ltd | Actuator |
| JP2006233995A (en) * | 2005-02-22 | 2006-09-07 | Shinano Kenshi Co Ltd | Electric actuator |
| CN201041225Y (en) * | 2007-04-20 | 2008-03-26 | 浙江大学 | Hollow lead screw type multi-stage electric cylinder |
| CN101514740A (en) * | 2008-02-19 | 2009-08-26 | 大银微系统股份有限公司 | Linear actuator |
| EP2180975B1 (en) * | 2007-08-16 | 2011-02-23 | SEW-EURODRIVE GmbH & Co. KG | Spindle motor |
| CN102003509A (en) * | 2009-09-02 | 2011-04-06 | 株式会社山武 | Rotary-linear movement change mechanism and actuator |
| CN102491217A (en) * | 2011-12-12 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Ball screw and sliding screw mutually nested type synchronous lifting photoelectric mast |
| CN102537252A (en) * | 2010-12-06 | 2012-07-04 | 梅西耶-布加蒂-道提公司 | Telescopic electromechanical actuator |
| CN203176285U (en) * | 2013-04-02 | 2013-09-04 | 第一传动科技股份有限公司 | Linear transmission device provided with double screws |
| CN104061299A (en) * | 2014-06-25 | 2014-09-24 | 西安交通大学 | Mechanism capable of realizing mutual conversion between push force and pull force of force amplifying |
| CN104319939A (en) * | 2014-10-13 | 2015-01-28 | 赵旭哲 | Slave type multi-stage electric cylinder with preposed outer rotor servo motor |
| CN204213286U (en) * | 2014-10-13 | 2015-03-18 | 安阳鑫盛机床股份有限公司 | A kind of adjustable screw bracket for ball screw |
| CN204327899U (en) * | 2014-12-12 | 2015-05-13 | 西北机器有限公司 | A kind of swing multi-stage motor telescopic cylinder |
| CN105114578A (en) * | 2015-07-28 | 2015-12-02 | 重庆长安汽车股份有限公司 | Quick high-precision micro-distance adjusting device |
| CN105186773A (en) * | 2015-09-25 | 2015-12-23 | 湖北三江航天万山特种车辆有限公司 | Electric threaded transmission type stopper |
| CN205423728U (en) * | 2016-03-16 | 2016-08-03 | 沈阳中之杰流体控制系统有限公司 | Multistage transmission mechanism |
-
2016
- 2016-03-16 CN CN201610148215.7A patent/CN105673791A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002327824A (en) * | 2001-05-08 | 2002-11-15 | Taiyo Ltd | Actuator |
| JP2006233995A (en) * | 2005-02-22 | 2006-09-07 | Shinano Kenshi Co Ltd | Electric actuator |
| CN201041225Y (en) * | 2007-04-20 | 2008-03-26 | 浙江大学 | Hollow lead screw type multi-stage electric cylinder |
| EP2180975B1 (en) * | 2007-08-16 | 2011-02-23 | SEW-EURODRIVE GmbH & Co. KG | Spindle motor |
| CN101514740A (en) * | 2008-02-19 | 2009-08-26 | 大银微系统股份有限公司 | Linear actuator |
| CN102003509A (en) * | 2009-09-02 | 2011-04-06 | 株式会社山武 | Rotary-linear movement change mechanism and actuator |
| CN102537252A (en) * | 2010-12-06 | 2012-07-04 | 梅西耶-布加蒂-道提公司 | Telescopic electromechanical actuator |
| CN102491217A (en) * | 2011-12-12 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Ball screw and sliding screw mutually nested type synchronous lifting photoelectric mast |
| CN203176285U (en) * | 2013-04-02 | 2013-09-04 | 第一传动科技股份有限公司 | Linear transmission device provided with double screws |
| CN104061299A (en) * | 2014-06-25 | 2014-09-24 | 西安交通大学 | Mechanism capable of realizing mutual conversion between push force and pull force of force amplifying |
| CN104319939A (en) * | 2014-10-13 | 2015-01-28 | 赵旭哲 | Slave type multi-stage electric cylinder with preposed outer rotor servo motor |
| CN204213286U (en) * | 2014-10-13 | 2015-03-18 | 安阳鑫盛机床股份有限公司 | A kind of adjustable screw bracket for ball screw |
| CN204327899U (en) * | 2014-12-12 | 2015-05-13 | 西北机器有限公司 | A kind of swing multi-stage motor telescopic cylinder |
| CN105114578A (en) * | 2015-07-28 | 2015-12-02 | 重庆长安汽车股份有限公司 | Quick high-precision micro-distance adjusting device |
| CN105186773A (en) * | 2015-09-25 | 2015-12-23 | 湖北三江航天万山特种车辆有限公司 | Electric threaded transmission type stopper |
| CN205423728U (en) * | 2016-03-16 | 2016-08-03 | 沈阳中之杰流体控制系统有限公司 | Multistage transmission mechanism |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523635A (en) * | 2016-12-30 | 2017-03-22 | 亿嘉和科技股份有限公司 | Spiral telescopic device |
| WO2020015743A1 (en) * | 2018-07-20 | 2020-01-23 | 捷世达企业股份有限公司 | Linear actuation structure |
| CN111409100A (en) * | 2020-04-16 | 2020-07-14 | 广东博智林机器人有限公司 | Telescopic mechanism, mechanical arm and construction robot |
| CN111409100B (en) * | 2020-04-16 | 2021-09-07 | 广东博智林机器人有限公司 | Telescopic mechanism, mechanical arm and construction robot |
| CN113561857A (en) * | 2021-08-05 | 2021-10-29 | 诺创汽车科技(上海)有限公司 | Propulsion mechanism and vehicle seat |
| CN114593185A (en) * | 2022-03-07 | 2022-06-07 | 北京航空航天大学 | Large-stroke multistage self-locking anti-sticking electric telescopic mechanism |
| CN114593185B (en) * | 2022-03-07 | 2022-11-15 | 北京航空航天大学 | Large-stroke multistage self-locking anti-sticking electric telescopic mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160615 |
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| RJ01 | Rejection of invention patent application after publication |