CN112610668A - Transmission assembly for lifting upright post - Google Patents
Transmission assembly for lifting upright post Download PDFInfo
- Publication number
- CN112610668A CN112610668A CN202011308114.4A CN202011308114A CN112610668A CN 112610668 A CN112610668 A CN 112610668A CN 202011308114 A CN202011308114 A CN 202011308114A CN 112610668 A CN112610668 A CN 112610668A
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- CN
- China
- Prior art keywords
- lead screw
- stage
- screw rod
- nut
- elastic buckle
- 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.)
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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
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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
Abstract
The invention provides a transmission assembly for a lifting upright post, and belongs to the technical field of lifting upright posts. The transmission assembly includes one-level lead screw and second grade lead screw including the transmission assembly that is used for the lift stand, one-level lead screw nestification is in the second grade lead screw and the two keeps the synchronous rotation of circumference and axial relative slip, be equipped with the one-level nut on the one-level lead screw, on the second grade lead screw with be connected with between the one-level nut and make the two keep the bearing of axial relatively fixed and circumference relative rotation, the second grade lead screw is the plastics lead screw, second grade lead screw tip is equipped with elastic buckle, the bearing suit is in on the second grade lead screw and quilt elastic buckle axial positioning. The vertical column lifting device has the advantages that by adopting the structure, the processing and the assembly of the transmission screw rod are more convenient, and the vertical column lifting device is used for controlling the lifting of the vertical column.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a transmission assembly for a lifting upright post, and belongs to the technical field of lifting upright posts.
[ background of the invention ]
For example, a telescopic transmission assembly device disclosed in chinese patent CN207016433U includes a hollow spindle with external threads on the outer wall, a transmission screw located in the hollow spindle, a first sleeve with a first transmission nut, and a second sleeve sleeved outside the first sleeve, wherein the transmission screw can drive the hollow spindle to rotate synchronously, the transmission screw and the hollow spindle can relatively extend and retract along the axial direction, the external threads on the hollow spindle are in threaded fit with the first transmission nut, the transmission screw is in threaded fit with the second transmission nut, and the hollow spindle is positioned with the second transmission nut in the axial direction in a rotatable manner.
However, the transmission screw usually adopts an aluminum screw rod or an iron wire rod, so that the processing precision requirement is high, the processing procedure is complex, and meanwhile, the assembly process requirement of the transmission assembly is high, the assembly is complex and the cost is high, so that the processing and the assembly of the transmission screw are inconvenient.
[ summary of the invention ]
The invention aims to provide a transmission assembly for a lifting upright post, so that a transmission screw rod is more convenient to process and assemble.
In order to solve the technical problem, the transmission assembly for the lifting stand column comprises a first-stage screw rod and a second-stage screw rod, the first-stage screw rod is nested in the second-stage screw rod, the first-stage screw rod and the second-stage screw rod keep circumferential synchronous rotation and axially slide relatively, a first-stage nut is arranged on the first-stage screw rod, a bearing which enables the first-stage screw rod and the second-stage screw rod to keep axial relative fixation and circumferential relative rotation is connected between the second-stage screw rod and the first-stage nut, the second-stage screw rod is a plastic screw rod, an elastic buckle is arranged at the end of the second-stage screw.
Preferably, the transmission assembly further comprises a positioning ring nested in the secondary screw rod, and the outer surface of the positioning ring is in contact with the elastic buckle to limit the deformation of the elastic buckle.
Preferably, the second grade lead screw is equipped with a plurality of elasticity buckles along the circumferential direction, transmission assembly still including be used for bearing installation back alternate between adjacent elasticity buckle with the reference column of restriction elasticity buckle deformation.
Preferably, the secondary screw rod is provided with a plurality of elastic buckles along the circumferential direction, and the positioning ring is provided with a guide column which is used for penetrating between the adjacent elastic buckles to limit the deformation of the elastic buckles after the bearing is installed.
Preferably, the positioning ring is provided with a buckle connected with the secondary screw rod in a clamping manner.
Preferably, a shaft shoulder is arranged on the secondary screw rod, and two sides of the bearing are limited by an elastic buckle and the shaft shoulder respectively.
Preferably, the end of the primary nut is provided with a nut buckle, the bearing comprises an outer ring and an inner ring, the inner ring is sleeved on the secondary screw rod and axially positioned by the elastic buckle, and the outer ring is positioned in the primary nut and axially positioned by the nut buckle.
Preferably, the primary nut is sleeved with a primary sleeve for limiting the deformation of the nut buckle after the bearing is installed.
Preferably, the second-stage screw rod is in threaded fit with a second-stage nut and is connected with a second-stage sleeve through the second-stage nut, an elastic sliding ring for preventing the second-stage screw rod from shaking is arranged between the second-stage screw rod and the second-stage sleeve, the elastic sliding ring and the second-stage screw rod are axially and relatively positioned and circumferentially rotate, and the elastic sliding ring and the second-stage screw rod and the second-stage sleeve are circumferentially and relatively positioned and axially slide.
Preferably, the first-stage lead screw is provided with a spline, the spline is detachably connected with the first-stage lead screw or is of an integrated structure, the spline is provided with a positioning bulge, the second-stage lead screw is provided with a positioning groove clamped with the positioning bulge, the positioning groove extends along the axial direction of the second-stage lead screw, and the second-stage lead screw rotates synchronously in the circumferential direction and slides relatively in the axial direction through the mode that the positioning groove is clamped with the positioning bulge.
The invention has the beneficial effects that:
second grade lead screw is the plastics lead screw, for aluminium lead screw or iron wire pole among the prior art, plastics lead screw low price, and the cost is lower, and processing is simple, and it is simple convenient to install for it is more convenient when transmission lead screw processing and assembly, the bearing passes through elastic buckle's deformation joint on the second grade lead screw, and is more convenient when making the bearing dismouting, carries out axial positioning through elastic buckle and can prevent that the bearing from droing.
These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic illustration of a transmission assembly according to an embodiment;
FIG. 2 is an enlarged schematic view of FIG. 1 at C;
FIG. 3 is an enlarged schematic view of FIG. 1 at D;
FIG. 4 is an enlarged schematic view of FIG. 1 at E;
FIG. 5 is a schematic view of an elastic slide ring according to an embodiment;
FIG. 6 is a schematic view of a retaining ring according to one embodiment;
FIG. 7 is a schematic view of a primary nut according to one embodiment;
FIG. 8 is a cross-sectional view of a drive assembly according to an embodiment;
FIG. 9 is an enlarged schematic view of FIG. 8 at A;
fig. 10 is an enlarged schematic view at B of fig. 8.
Reference numerals:
1 one-level lead screw, 2 second grade lead screws, 3 one-level nuts, 4 bearings, 5 elastic buckles, 6 locating rings, 7 one-level sleeves, 8 second grade nuts, 9 second grade sleeves, 10 elastic sliding rings, 11 splines, 12 guide posts, 13 buckles and 14 nut buckles.
[ detailed description ] embodiments
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
In the following description, the terms such as "inner", "outer", "upper", "lower", "left", "right", etc., which indicate orientations or positional relationships, are used to indicate orientations or positional relationships based on the drawings, and are only used for convenience in describing embodiments and for simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 10, the preferred structure of the emergency stop self-locking circuit of the dc motor of this embodiment includes a first-stage lead screw 1 and a second-stage lead screw 2, the first-stage lead screw 1 is nested in the second-stage lead screw 2, and the first-stage lead screw and the second-stage lead screw keep circumferential synchronous rotation and axially slide relatively, a first-stage nut 3 is disposed on the first-stage lead screw 1, a bearing 4 which makes the first-stage lead screw and the second-stage nut keep axial relative fixation and circumferential relative rotation is connected between the second-stage lead screw 2 and the first-stage nut 3, the second-stage lead screw 2 is a plastic lead screw, an elastic buckle 5 is disposed at an end of the second-stage.
The invention has the beneficial effects that:
second grade lead screw 2 is the plastics lead screw, and for aluminium lead screw or iron wire pole among the prior art, plastics lead screw low price, the cost is lower, and processing is simple, and it is simple convenient to install for it is more convenient when transmission lead screw processing and assembly, bearing 4 passes through elastic buckle 5's deformation joint on second grade lead screw 2, and is more convenient when making the dismouting of bearing 4, carries out axial positioning through elastic buckle 5 and can prevent that bearing 4 from droing.
Wherein, one-level lead screw 1 links to each other with drive arrangement usually, drive arrangement drive one-level lead screw 1 rotates, drive second grade lead screw 2 synchronous rotation when one-level lead screw 1 rotates, drive one-level nut 3 simultaneously and remove along the axis, when second grade nut 8 removes, drive second grade lead screw 2 synchronous motion through bearing 4, make second grade lead screw 2 remove in the pivoted, thereby make second grade lead screw 2 can realize flexible, and then drive second grade sleeve pipe 9 flexible, make the lift stand can realize going up and down.
In addition, 5 deformability of the elastic buckle of plastics material are stronger, the installation of the bearing 4 of being convenient for, and it is more convenient to make the elastic buckle 5 processed on the plastics lead screw simultaneously.
Meanwhile, the primary screw rod 1 can also be a plastic screw rod, and the primary nut 3 and/or the secondary nut 8 can also be a plastic nut.
In order to prevent that 5 deformations of elastic buckle make bearing 4 loosen or drop, this embodiment is preferred the transmission assembly still includes the holding ring 6 of nestification in second grade lead screw 2, the surface of holding ring 6 contacts with elastic buckle 5 and takes place deformation in order to restrict 5 deformations of elastic buckle, support pressing elastic buckle 5 through the ring body of holding ring 6 and can make holding ring 6 restrict elastic buckle 5 and take place deformation towards 2 axial movements of second grade lead screw for bearing 4 can not loosen or drop for second grade lead screw 2 because of 5 deformations of elastic buckle, thereby make bearing 4 installation more stable firm, and simultaneously, holding ring 6 can also prevent that plastics lead screw self from taking place deformation and leading to damaging.
In order to further prevent the deformation of elastic buckle 5, this embodiment is preferred second grade lead screw 2 is equipped with a plurality of elastic buckle 5 along the circumferential direction, be equipped with on the holding ring 6 and be used for bearing 4 to install the back and alternate guide post 12 in order to restrict the deformation of elastic buckle 5 between adjacent elastic buckle 5, when elastic buckle 5 deforms, except when the axis motion towards second grade lead screw 2, the distance between two adjacent elastic buckle 5 also can reduce, fill through guide post 12 and can further prevent the deformation of elastic buckle 5 between two adjacent elastic buckle 5, and simultaneously, make along the equal motion of bearing 4 that can restrict of a plurality of directions of second grade lead screw 2 circumference through setting up a plurality of elastic buckle 5, prevent that bearing 4 from droing.
In order to make the holding ring 6 to be installed and fixed more conveniently, this embodiment is preferred be equipped with on the holding ring 6 with the buckle 13 of 2 joints of second grade lead screw, the holding ring 6 can be installed on second grade lead screw 2 through buckle 13, the installation of the holding ring 6 of being convenient for, wherein can set up the draw-in groove on elastic buckle 5, buckle 13 can fix a position for second grade lead screw 2 through the mode of card in the draw-in groove.
In order to enable the bearing 4 to realize axial positioning, the second-stage screw rod 2 is preferably provided with a shaft shoulder in the embodiment, and the two sides of the bearing 4 are respectively limited by the elastic buckle 5 and the shaft shoulder, so that the bearing 4 can realize axial positioning under the limiting effect of the elastic buckle 5 and the shaft shoulder.
In order to make bearing 4 can be for 3 axial positioning of one-level nut, this embodiment is preferred 3 tip of one-level nut is equipped with nut buckle 14, bearing 4 includes outer lane and inner circle, the inner circle cover is established on second grade lead screw 2 and quilt 5 axial positioning of elastic buckle, the outer lane is located one-level nut 3 and by 14 axial positioning of nut buckle, through setting up nut buckle 14, can be so that bearing 4 is more convenient when installing on one-level nut 3.
In order to prevent that 14 deformations of nut buckle from leading to bearing 4 to loosen or drop, this embodiment is preferred 3 overcoat of one-level nut is equipped with the one-level sleeve pipe 7 of limiting 14 deformations of nut buckle after 4 installations of bearing, carry on spacingly through one-level sleeve pipe 7, can prevent that 14 external motion of nut buckle from taking place deformation, thereby make and prevent that bearing 4 from loosening or drop, and simultaneously, the bearing 4 inner circle passes through holding ring 6 and guide post 12 restriction elastic buckle 5 deformation, the bearing 4 outer circle passes through 7 restriction nut buckles of one-level sleeve pipe 14 deformations, make bearing 4 more stable firm when fixing a position, also make bearing 4 dismouting more convenient.
In order to make the second grade lead screw 2 more stable, this embodiment is preferred the second grade lead screw 2 screw-thread fit has second grade nut 8 and is connected with second grade sleeve pipe 9 through second grade nut 8, be equipped with the elastic sliding ring 10 that is used for preventing that second grade lead screw 2 from rocking between second grade lead screw 2 and the second grade sleeve pipe 9, elastic sliding ring 10 and second grade lead screw 2 keep axial relative positioning and circumference relative rotation to keep circumference relative positioning and axial relative slip with second grade sleeve pipe 9, can prevent through elastic sliding ring 10 that second grade lead screw 2 from rocking, make second grade lead screw 2 more stable, elastic sliding ring 10 includes position circle and elastic claw, make elastic sliding ring 10 both can restrict second grade lead screw 2 and rock through the cooperation of position circle and elastic claw, can guarantee again that elastic sliding ring 10 can not influence the motion of second grade lead screw 2 and second grade sleeve pipe 9.
In order to make the secondary screw rod 2 rotate synchronously in the circumferential direction and slide relatively in the axial direction relative to the primary screw rod 1, the primary screw rod 1 is preferably provided with a spline 11, the spline 11 and the primary screw rod 1 are detachably connected or are in an integral structure, the spline 11 is provided with a positioning bulge, the second-stage screw rod 2 is provided with a positioning groove clamped with the positioning bulge, the positioning groove extends along the axial direction of the second-stage screw rod 2, the secondary screw rod 2 and the primary screw rod 1 rotate synchronously in the circumferential direction and slide relatively in the axial direction in a mode that the positioning groove is clamped with the positioning bulge, the two-stage screw rod 2 can rotate synchronously in the circumferential direction relative to the first-stage screw rod 1 and slide relatively in the axial direction through the clamping mode of the positioning bulges of the spline 11 and the positioning grooves, wherein, the spline 11 and the first-stage screw rod 1 are of an integrated structure, so that the spline 11 is more convenient to process and install.
Example two:
the difference between this embodiment and the first embodiment is that, in this embodiment, the secondary screw rod 2 is provided with a plurality of elastic buckles 5 along the circumferential direction, and the transmission assembly further includes a positioning column inserted between adjacent elastic buckles 5 after the bearing 4 is installed to limit the deformation of the elastic buckles 5.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (10)
1. The utility model provides a transmission assembly for lift stand, includes one-level lead screw and second grade lead screw, the one-level lead screw nestification is in the second grade lead screw and the two keeps the synchronous rotation of circumference and axial relative slip, be equipped with the one-level nut on the one-level lead screw, on the second grade lead screw with be connected with between the one-level nut and make the two keep axial relatively fixed and circumference relatively rotating's bearing, its characterized in that: the secondary screw rod is a plastic screw rod, an elastic buckle is arranged at the end part of the secondary screw rod, and the bearing is sleeved on the secondary screw rod and is axially positioned by the elastic buckle.
2. A drive assembly for lifting a mast as claimed in claim 1, wherein: the transmission assembly further comprises a positioning ring nested in the secondary screw rod, and the outer surface of the positioning ring is in contact with the elastic buckle to limit the deformation of the elastic buckle.
3. A drive assembly for lifting a mast as claimed in claim 1, wherein: the second grade lead screw is equipped with a plurality of elastic buckle along the circumferential direction, transmission assembly still alternates between adjacent elastic buckle with the reference column of restriction elastic buckle deformation after being used for the bearing installation.
4. A drive assembly for lifting a mast as claimed in claim 2, wherein: the second grade lead screw is equipped with a plurality of elastic buckle along the circumference direction, be equipped with on the holding ring and be used for bearing installation back interlude in order to restrict the guide post of elastic buckle deformation between adjacent elastic buckle.
5. A drive assembly for lifting a mast as claimed in claim 4, wherein: and the positioning ring is provided with a buckle connected with the secondary screw rod in a clamping manner.
6. A drive assembly for lifting a mast according to any one of claims 1 to 5, wherein: and a shaft shoulder is arranged on the secondary screw rod, and two sides of the bearing are respectively limited by an elastic buckle and the shaft shoulder.
7. A drive assembly for lifting a mast according to any one of claims 1 to 5, wherein: the end part of the primary nut is provided with a nut buckle, the bearing comprises an outer ring and an inner ring, the inner ring is sleeved on the secondary screw rod and is axially positioned by the elastic buckle, and the outer ring is positioned in the primary nut and is axially positioned by the nut buckle.
8. A drive assembly for lifting a mast as claimed in claim 7, wherein: the first-level nut is sleeved with a first-level sleeve which limits the deformation of the nut buckle after the bearing is installed.
9. A drive assembly for lifting a mast according to any one of claims 1 to 5, wherein: the two-stage screw rod is in threaded fit with a two-stage nut and is connected with a two-stage sleeve through the two-stage nut, an elastic sliding ring used for preventing the two-stage screw rod from shaking is arranged between the two-stage screw rod and the two-stage sleeve, the elastic sliding ring and the two-stage screw rod are axially and relatively positioned and circumferentially rotate, and the elastic sliding ring and the two-stage screw rod and the two-stage sleeve are circumferentially and relatively positioned and axially and relatively slide.
10. A drive assembly for lifting a mast according to any one of claims 1 to 5, wherein: the improved structure is characterized in that a spline is arranged on the first-stage lead screw, the spline is detachably connected or integrated with the first-stage lead screw, a positioning bulge is arranged on the spline, a positioning groove clamped with the positioning bulge is arranged on the second-stage lead screw, the positioning groove extends along the axial direction of the second-stage lead screw, and the second-stage lead screw rotates synchronously in the circumferential direction and slides in the axial direction relative to the first-stage lead screw in a circumferential direction in a manner of clamping the positioning groove and the positioning bulge.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011308114.4A CN112610668A (en) | 2020-11-20 | 2020-11-20 | Transmission assembly for lifting upright post |
| PCT/CN2021/131657 WO2022105856A1 (en) | 2020-11-20 | 2021-11-19 | Transmission assembly for lifting column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011308114.4A CN112610668A (en) | 2020-11-20 | 2020-11-20 | Transmission assembly for lifting upright post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112610668A true CN112610668A (en) | 2021-04-06 |
Family
ID=75224880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011308114.4A Pending CN112610668A (en) | 2020-11-20 | 2020-11-20 | Transmission assembly for lifting upright post |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112610668A (en) |
| WO (1) | WO2022105856A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105856A1 (en) * | 2020-11-20 | 2022-05-27 | 浙江捷昌线性驱动科技股份有限公司 | Transmission assembly for lifting column |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005069430A (en) * | 2003-08-27 | 2005-03-17 | Kokuei Kogyo:Kk | Linear movement device |
| DE102010005145A1 (en) * | 2010-01-19 | 2011-07-21 | Honeywell Technologies S.A.R.L. | Plastic and metal screw drive with a threaded nut and a threaded spindle |
| WO2015154791A1 (en) * | 2014-04-07 | 2015-10-15 | Igus Gmbh | Lead screw drive with asymmetrical internal and external thread and corresponding spindle nut |
| CN107420506B (en) * | 2017-08-04 | 2023-12-12 | 宁波海仕凯驱动科技有限公司 | Lifting upright post |
| CN108466994B (en) * | 2018-05-14 | 2020-10-20 | 浙江捷昌线性驱动科技股份有限公司 | Transmission device and lifting upright post |
| CN209604375U (en) * | 2019-03-18 | 2019-11-08 | 宁波恒侯日用品有限公司 | A kind of Multi-stage transmission telescopic device |
| 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 |
| CN214305114U (en) * | 2020-11-20 | 2021-09-28 | 浙江捷昌线性驱动科技股份有限公司 | Transmission assembly for lifting upright post |
| CN112610668A (en) * | 2020-11-20 | 2021-04-06 | 浙江捷昌线性驱动科技股份有限公司 | Transmission assembly for lifting upright post |
-
2020
- 2020-11-20 CN CN202011308114.4A patent/CN112610668A/en active Pending
-
2021
- 2021-11-19 WO PCT/CN2021/131657 patent/WO2022105856A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022105856A1 (en) * | 2020-11-20 | 2022-05-27 | 浙江捷昌线性驱动科技股份有限公司 | Transmission assembly for lifting column |
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| Publication number | Publication date |
|---|---|
| WO2022105856A1 (en) | 2022-05-27 |
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