CN103267100A - Precise self-locking and lifting adjustment device - Google Patents
Precise self-locking and lifting adjustment device Download PDFInfo
- Publication number
- CN103267100A CN103267100A CN2013102008662A CN201310200866A CN103267100A CN 103267100 A CN103267100 A CN 103267100A CN 2013102008662 A CN2013102008662 A CN 2013102008662A CN 201310200866 A CN201310200866 A CN 201310200866A CN 103267100 A CN103267100 A CN 103267100A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- worm
- screw
- worm gear
- spline
- 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
Images
Landscapes
- Gear Transmission (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a precise self-locking and lifting adjustment device which comprises a machine base, a worm and a worm wheel both of which are used for transmitting, a thread for spiral transmission, a spline for circumferential fixing and guiding and a pre-tightening nut sleeve for pre-tightening, wherein the worm, the worm wheel, the thread, the spline and the pre-tightening nut sleeve are arranged in the machine base. The precise self-locking and lifting adjustment device is characterized in that the worm is in meshed with the worm wheel in a transmission mode, a spiral transmission pair is formed by the worm wheel and a screw rod, the circumferential movement of the screw rod is limited through the spline or a guiding sliding key, the rotation of the worm wheel is changed into the rectilinear motion of the screw rod, and the screw rod has a good centering guiding property. The precise self-locking and lifting adjustment device has the advantages that the screw rod does high-precise unidirection rectilinear motion under the action of guiding and centering of the key, the spherical surface of the top end of the screw rod is hinged to a conical sleeve in a self-centering mode, and a bias effect at the jacking contact position is improved. The screw rod does not do circumferential rotation, and the precision of the unidirection rectilinear motion is ensured. After the screw rod is adjusted in place, the threaded connection and the transmission of the worm wheel and the worm have the reverse self-locking function, and stability and reliability of the device are enhanced. The precise self-locking and lifting adjustment device is high in transmission precision and accurate in unidirection rectilinear lifting adjustment position, and has the good reverse self-locking function.
Description
Technical field
The present invention relates to adjust on platform such as some precision measuremnts or processing and the lathe regulating device of accurate distance, particularly rotation is become the straight line motion of the single-degree-of-freedom of determining distance.Background technique
Background technique:
Accurate self-locking elevation and subsidence regulating device is widely used in all trades and professions such as machinery, accurate chemical industry and medical apparatus needs straight line to regulate mobile platform, the accurate self-locking elevation and subsidence regulating device that is installed on platform such as precision measuremnt or processing and the lathe has direct decisive role to the accuracy that walks and locate of gauge head and workpiece, thereby directly the precision of instrument is produced significant effects.
Domestic elevation and subsidence regulating device adopts the elevation and subsidence regulating device that gear rack, worm and gear slow down more at present.Gear rack deceleration controlling device mainly is to slow down and transmitting torque by big pinion, engagement forms the straight-line transformation that rotatablely moves to gearwheel with tooth bar more then, finally finish up-down adjustment, the topmost characteristics of this structure are exactly oppositely self-locking, and must must providing endlessly after the arrival motion purpose distance, power satisfies predetermined location or pretension requirement.It is compositions such as motor worm, worm gear, lifting screw, base and loam cake that the worm and gear elevation and subsidence regulating device is mainly formed.Be provided with center hole in the worm gear, the downside of worm gear is provided with cylindrical body, the center hole of cylindrical body and worm gear is linked to be through hole, the center hole of worm gear is provided with screw thread, the screw thread periphery of the upside of worm gear is provided with the boss ring, worm gear and cylindrical body, screw thread and boss ring connect as one, lifting screw is inserted in the hole and with thread engagement and is connected, the downside of loam cake is provided with the boss annular space chamber of matching with the boss ring, cooperate between boss ring and the boss annular space chamber and be Spielpassung, the upside of base is provided with the cylindrical body cavity that matches with cylindrical body, and cylindrical body and cylindrical body cavity are all Spielpassung.This structural design exists following deficiency: because boss ring and the boss annular space chamber of worm gear upside are the up rightness Spielpassung, same, the cylindrical body of worm gear downside and base upside cylindrical body cavity are the up rightness Spielpassung.Like this, when driving worm gear, motor worm rotates, when worm gear moves up and down by the drive of the screw thread on through hole lifting screw, lifting screw will rotate along with the rotation of worm gear, thereby caused the not high of lifting transmission efficiency, increase the heating value of elevator mechanism, also caused the distortion of transmission ratios and the not monotony of lifting degrees of freedom, had a strong impact on the levels of precision of lifting structure transmission location etc. like this.If eject a unbalance stress, may cause the boss ring in boss annular space chamber and cylindrical body run-off the straight in the cylinder body cavity, screens will inevitably take place or withstand in inclination, and severe interference takes place in the boss ring that worm gear is connected as a single entity and cylindrical body in boss annular space chamber and between the cylindrical body cavity, the lighter makes structure produce bigger noise and vibration, weight person can cause the drive motor operating overload, thereby causes shortening even damaging of electrical machinery life.
Summary of the invention
The problem that the invention of this reality solves emphatically is to eliminate the straight line motion that the screw rod circumference rotated and provided a kind of single degree of freedom that can accurately control, after finishing, motion can provide the reliable oppositely accurate worm gear screw rod of auto-lock function to rise device, this device motion simultaneously steadily, can not produce interference, motion noise is low.
For reaching the technical problem of above-mentioned functions, the present invention realizes by the following technical solutions:
A kind of worm gear screw elevator, it comprises the transmission in support, pre-load nut cover, conical sleeve, loam cake, bearing and the support.Transmission is by worm screw, worm gear and be threaded with the screw rod of spline and form.Worm gear is provided with center hole, the center hole edge along centre hole axis to being provided with screw thread, the worm gear top and bottom are provided with the geosynclinal convex platform that concaves less than the part of root radius, form the fitting seat of thrust ball bearing with this, thrust ball bearing is installed on the installation groove boss of worm gear up and down, forms the axially locating to worm gear.The support bottom is provided with the thrust-bearing fitting seat of circular groove form, and the fitting seat center is provided with spline or guiding feather key keyway.The loam cake downside has cylindrical boss, and boss is provided with center hole, and to being provided with one section screw thread, the circumferential surface of the thrust ball bearing of worm gear upper-end surface matches with the cylindrical boss of loam cake along centre hole axis at the center hole edge, forms the radially restriction to thrust ball bearing.The pre-load nut cover is made as the nut head of rounded groove form, and pre-load nut is arranged with smooth central through bore, and pre-load nut cover screw portion cooperates with the cylindrical boss screwed hole of centre of loam cake and withstands thrust ball bearing, and formation is to the axial pretightening of thrust ball bearing.Screw rod one end that has spline is spline, the other end is sphere, the centre is screw thread, sphere and screw rod can be to assemble, sphere also can be the integrated type that links to each other with screw rod, screw rod is by pre-load nut cover, loam cake, thrust ball bearing and worm screw and support, and the screw flight part cooperates with the helical thread portion of worm gear center, and the splined section of screw rod cooperates with spline or the guiding feather key keyway of support bottom.Spline and support keyway cooperate, and can limit the rotation of screw rod thus, and spline is good to neutrality, so screw rod can be done accurate single-degree-of-freedom straight line motion.It is hinged that the sphere at screw rod top and conical sleeve inner concave form self contering, and conical sleeve is fixed on platform such as precision measuremnt or processing and the lathe, and this structure has also strengthened screw rod proofreaies and correct neutrality, thereby has ensured the accuracy of this device.Worm screw is fixed on the support by the angular contact ball bearing at two ends, radial force and the axial force of using angular contact ball bearing can bear worm screw, and the worm screw two ends are all the input shaft structure of band keyway.The driven by motor worm screw, the worm and wheel engagement is rotated worm gear, and worm gear and worm meshing have reverse auto-lock function.
The invention has the beneficial effects as follows: accurate self-locking elevation and subsidence regulating device is in uphill process, screw rod is made the higher single degree of freedom straight line motion of straightness accuracy precision under the guiding of spline and centering effect, simultaneously the screw tip disc is hinged with conical sleeve formation self contering, further strengthened the screw rod the other end to the center; In straight line motion, screw rod can not rotate, and has eliminated screw rod in company with the rotatablely moving of worm gear, and therefore can provide the velocity ratio precision higher single-degree-of-freedom straight line motion.After motion reached the precalculated position, screw rod and worm gear were threaded and have reverse self-locking, and worm gear and worm screw have reverse self-locking, therefore can provide individual layer or double-deck auto-lock function, had increased the reliability of elevation and subsidence regulating device.The present invention has improved the transmission accuracy of single-degree-of-freedom straight line lift adjustment, have good reverse auto-lock function, has reduced phenomenons such as vibration in the device movement process and noise.
Description of drawings
Fig. 1 is the plan view of structure of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the screw rod schematic representation that is threaded with spline.
Fig. 4 is the stand structure schematic representation.
Fig. 5 is the worm gear arrangement schematic representation.
Fig. 6 is the worm structure schematic representation.
Fig. 7 is pre-load nut cover schematic representation.
Fig. 8 is the conical sleeve schematic representation.
1, support 2, worm gear 3, loam cake
4, pre-load nut cover 5, screw rod 6, thrust ball bearing
7, angular contact ball bearing 8, worm screw 9, conical sleeve.
Embodiment
As shown in the figure, the interior worm screw of support (1) (8) is installed on the angular contact ball bearing (7), angular contact ball bearing (7) is directly installed on the fitting seat of support (1) two wall, worm gear (2) two ends installed thrust ball bearings (6), thrust ball bearing (6) is installed on the groove boss (2-1) of worm gear (2), come fixedly worm gear (2) of end face with this, lower end thrust-bearing (6) is installed in support (1) the bottom surface circular mounting groove (1-1), upper end thrust-bearing (6) is radially fixing by loam cake (3), and then by pre-load nut cover (4) axial restraint and pretension upper end thrust ball bearing (6), between pre-load nut cover (4) and the loam cake (3) by being threaded, screw rod (5) intermediate thread (5-2) passes pre-load nut cover (4) and thrust ball bearing (6) is threaded with worm gear (2) axle center, this is threaded and has reverse auto-lock function, the terminal spline of screw rod (5) (5-1) matches with spline or the guiding featherway (1-2) of support (1) bottom, forms the straight line motion of the single degree of freedom.Screw rod (5) top sphere (5-3) is hinged with conical sleeve (9) inner concave formation self contering.Worm screw (8) and worm gear (2) engagement, there is the input shaft structure of the band keyway that can carry out power and torque at worm screw (8) two ends (8-1).
Transmission process of the present invention: external motor drives worm screw (8) and rotates, worm screw (8) rotates worm gear (2) with worm gear (2) engagement, and oppositely self-locking, angular contact ball bearing (7) forms two end supports to worm screw (8), bear axial force and the radial force of worm screw (8) with this, thrust ball bearing (6) is fixed on the both ends of the surface of worm gear (2), formation is supported the axially locating of worm gear (2), worm gear (2) center hole screw thread cooperates with the screw thread (5-2) of screw rod (5) centre, thereby rotatablely moving of worm gear (2) changes the straight line motion of screw rod (5) into, under the hinged effect of the self contering that the guiding of the terminal spline (5-1) of screw rod (5) and screw rod (5) top sphere (5-3) and conical sleeve (9) form, screw rod (5) is done the high-precision straight line motion of single-degree-of-freedom, thus the pretension of finishing device or location.
Claims (18)
1. accurate self-locking elevation and subsidence regulating device is characterised in that: a kind of worm gear screw elevator, it comprises the transmission in support (1), pre-load nut cover (4), conical sleeve (9), loam cake (3), bearing (6,7) and the support.
2. transmission is by worm screw (8), worm gear (2) and be threaded with the screw rod (5) of spline and form.
3. worm gear (2) is provided with threaded center hole, and the worm gear top and bottom are provided with the bearing support groove boss (2-1) of installed thrust ball bearing (6), forms the axially locating to worm gear (2).
4. support (1) bottom is provided with circular thrust-bearing fitting seat groove (1-1), and fitting seat groove (1-1) center is provided with spline or guiding feather key keyway (1-2).
5. loam cake (3) downside has cylindrical boss, and it is unthreaded hole that place, boss axle center is set to down segment, and going up big section is tapped hole, and the thrust ball bearing (6) of worm gear (2) upper-end surface matches in the hole therewith, forms the radially restriction to thrust ball bearing (6).
6. pre-load nut cover (4) is made as the rounded groove head, pre-load nut cover (4) is provided with smooth central through bore, pre-load nut cover (4) screw portion cooperates with the cylindrical boss screwed hole of centre of loam cake (3) and withstands thrust ball bearing (6), forms the axial pretightening to thrust ball bearing (6).
7. screw rod (5) one ends that have spline are spline (5-1), the other end is sphere (5-3), the centre is screw thread (5-2), sphere (5-3) can assembly and disassembly, it also can be the integrated type that links to each other with screw rod (5), screw flight (5-2) part cooperates with the helical thread portion of worm gear (2) center, and the spline of screw rod (5-1) part cooperates with spline or the guiding feather key keyway (1-2) of support bottom.
8. it is hinged that the sphere at screw rod top (5-3) and conical sleeve (9) inner concave form self contering, strengthened screw rod (5) to neutrality.
9. worm screw (8) is fixed on the support (1) by the angular contact ball bearing (7) at two ends, radial force and the axial force of using angular contact ball bearing (7) can bear worm screw (8), and the worm screw two ends are all the input shaft structure (8-1) of band keyway.
10. driven by motor worm screw (8), worm screw (8) rotates worm gear (2) with worm gear (2) engagement, and worm gear (2) and worm screw (8) mesh has reverse auto-lock function.
11. accurate self-locking elevation and subsidence regulating device according to claim 1 is characterized in that: screw rod (5) one ends are sphere (5-3), and the other end is spline (5-1), and the centre is screw thread (5-2).
12. the screw thread (5-2) in the screw rod according to claim 2 (5) can have auto-lock function.
13. accurate self-locking elevation and subsidence regulating device according to claim 1 is characterized in that: screw rod (5) one ends are sphere (5-3), can be hinged with double cone cover (9) inner concave formation self contering.
14. accurate self-locking elevation and subsidence regulating device according to claim 1 is characterized in that: support (1) inner bottom surface has spline or guiding feather key keyway (1-2).
15. accurate self-locking elevation and subsidence regulating device according to claim 1 is characterized in that: there is the input shaft structure (8-1) of the band keyway that can carry out power and torque transmission at worm screw (8) two ends.
16. accurate self-locking elevation and subsidence regulating device according to claim 1 is characterized in that: worm gear (2) both ends of the surface have the groove boss of bearing fitting seat.
17. accurate self-locking elevation and subsidence regulating device according to claim 1 is characterized in that: worm gear (2) has auto-lock function with worm screw (8).
18. accurate self-locking elevation and subsidence regulating device according to claim 1 is characterized in that: the thrust ball bearing axially support is used in worm gear (2) upper and lower end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102008662A CN103267100A (en) | 2013-05-27 | 2013-05-27 | Precise self-locking and lifting adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102008662A CN103267100A (en) | 2013-05-27 | 2013-05-27 | Precise self-locking and lifting adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103267100A true CN103267100A (en) | 2013-08-28 |
Family
ID=49010745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102008662A Pending CN103267100A (en) | 2013-05-27 | 2013-05-27 | Precise self-locking and lifting adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103267100A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692490A (en) * | 2016-04-14 | 2016-06-22 | 中国船舶重工集团公司第七0四研究所 | Small-size large-load ball screw lift |
| CN105715726A (en) * | 2016-04-28 | 2016-06-29 | 济南大学 | External jaw pressurization device for inner cylinder pressure of friction damper |
| CN108663300A (en) * | 2018-05-07 | 2018-10-16 | 西安石油大学 | Hyposmosis tight sand experimental provision |
| CN110067832A (en) * | 2019-05-05 | 2019-07-30 | 广东工业大学 | A kind of piezoelectric ceramic actuator pre-tightening apparatus |
| CN110239277A (en) * | 2019-05-14 | 2019-09-17 | 西安理工大学 | A kind of band tyre assembly system based on cylindrical-coordinate system |
| CN110486438A (en) * | 2018-11-15 | 2019-11-22 | 段沧桑 | The equipment that one kind realizes pressure page and accessible page turning |
| CN110476678A (en) * | 2019-08-08 | 2019-11-22 | 沈阳农业大学 | A kind of heliogreenhouse film pressing rope preload regulating device |
| CN110480562A (en) * | 2019-08-15 | 2019-11-22 | 泸州天诺科技有限公司 | A kind of even power replacer of the small clearance display screen of precision |
| CN112059125A (en) * | 2020-08-17 | 2020-12-11 | 山东国创风能装备有限公司 | Movable position platform of large wind power casting |
| CN112340069A (en) * | 2020-10-30 | 2021-02-09 | 北京卫星制造厂有限公司 | Separation unlocking device based on non-continuous thread pair |
| CN114321304A (en) * | 2022-01-12 | 2022-04-12 | 中国航发湖南动力机械研究所 | Damping-adjustable linear fine adjustment mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004190744A (en) * | 2002-12-10 | 2004-07-08 | Hino Motors Ltd | Actuator |
| CN2674198Y (en) * | 2004-02-19 | 2005-01-26 | 于宙 | Square worm gear ball screw type elevator |
| CN1740592A (en) * | 2004-09-28 | 2006-03-01 | 田衍新 | Elevator of bending and winding machine |
| CN202812040U (en) * | 2012-10-10 | 2013-03-20 | 天津市万新传动设备有限公司 | Worm wheel lead screw elevator |
| CN202937754U (en) * | 2012-08-22 | 2013-05-15 | 博能传动(苏州)有限公司 | Input direct connection worm and gear lifter |
-
2013
- 2013-05-27 CN CN2013102008662A patent/CN103267100A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004190744A (en) * | 2002-12-10 | 2004-07-08 | Hino Motors Ltd | Actuator |
| CN2674198Y (en) * | 2004-02-19 | 2005-01-26 | 于宙 | Square worm gear ball screw type elevator |
| CN1740592A (en) * | 2004-09-28 | 2006-03-01 | 田衍新 | Elevator of bending and winding machine |
| CN202937754U (en) * | 2012-08-22 | 2013-05-15 | 博能传动(苏州)有限公司 | Input direct connection worm and gear lifter |
| CN202812040U (en) * | 2012-10-10 | 2013-03-20 | 天津市万新传动设备有限公司 | Worm wheel lead screw elevator |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692490A (en) * | 2016-04-14 | 2016-06-22 | 中国船舶重工集团公司第七0四研究所 | Small-size large-load ball screw lift |
| CN105715726A (en) * | 2016-04-28 | 2016-06-29 | 济南大学 | External jaw pressurization device for inner cylinder pressure of friction damper |
| CN108663300B (en) * | 2018-05-07 | 2021-08-03 | 西安石油大学 | Low-permeability tight sandstone experimental device |
| CN108663300A (en) * | 2018-05-07 | 2018-10-16 | 西安石油大学 | Hyposmosis tight sand experimental provision |
| CN110486438A (en) * | 2018-11-15 | 2019-11-22 | 段沧桑 | The equipment that one kind realizes pressure page and accessible page turning |
| CN110486438B (en) * | 2018-11-15 | 2024-02-09 | 段沧桑 | Equipment for realizing page pressing and barrier-free page turning |
| CN110067832A (en) * | 2019-05-05 | 2019-07-30 | 广东工业大学 | A kind of piezoelectric ceramic actuator pre-tightening apparatus |
| CN110067832B (en) * | 2019-05-05 | 2022-04-19 | 广东工业大学 | Pre-tightening device for piezoelectric ceramic driver |
| CN110239277A (en) * | 2019-05-14 | 2019-09-17 | 西安理工大学 | A kind of band tyre assembly system based on cylindrical-coordinate system |
| CN110476678A (en) * | 2019-08-08 | 2019-11-22 | 沈阳农业大学 | A kind of heliogreenhouse film pressing rope preload regulating device |
| CN110476678B (en) * | 2019-08-08 | 2024-03-26 | 沈阳农业大学 | Solar greenhouse film pressing rope pre-tightening adjusting device |
| CN110480562B (en) * | 2019-08-15 | 2021-06-15 | 泸州天诺科技有限公司 | Even power replacer of accurate booth apart from display screen |
| CN110480562A (en) * | 2019-08-15 | 2019-11-22 | 泸州天诺科技有限公司 | A kind of even power replacer of the small clearance display screen of precision |
| CN112059125A (en) * | 2020-08-17 | 2020-12-11 | 山东国创风能装备有限公司 | Movable position platform of large wind power casting |
| CN112340069A (en) * | 2020-10-30 | 2021-02-09 | 北京卫星制造厂有限公司 | Separation unlocking device based on non-continuous thread pair |
| CN114321304B (en) * | 2022-01-12 | 2023-11-14 | 中国航发湖南动力机械研究所 | Linear fine adjustment mechanism with adjustable damping |
| CN114321304A (en) * | 2022-01-12 | 2022-04-12 | 中国航发湖南动力机械研究所 | Damping-adjustable linear fine adjustment mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103267100A (en) | Precise self-locking and lifting adjustment device | |
| CN203453408U (en) | Self-locking elevating adjusting device with precision | |
| WO2017152429A1 (en) | Two-stage parallel cycloid ball reducer | |
| US20180363747A1 (en) | Vertical mill gearbox | |
| US20100140573A1 (en) | Lifting device | |
| CN103464990A (en) | Machining method for gear shaft in angle steering gear assembly | |
| CN110139999A (en) | A kind of transmission decelerating device | |
| CN105626816A (en) | Single-row speed reducing and changing integration cylinder sine oscillating tooth mechanism | |
| CN205327440U (en) | Electric steering engine radial force loading device | |
| CN103776411B (en) | Automobile primary cone bearing clearance measurement core and application thereof | |
| CN205350242U (en) | No return difference single -stage cycloid awl tooth reduction gear | |
| EP2505301A1 (en) | Balancer device for machine tools | |
| CN105332794B (en) | The gear and aircraft engine exported vertically | |
| CN216421974U (en) | Double-ended grinding machine | |
| CN210510168U (en) | Planetary speed reducer with small tooth difference | |
| CN210859747U (en) | Two-way thrust seat of transmission device | |
| CN201330839Y (en) | Planet carrier flexible suspension device | |
| CN203809616U (en) | Single-stage hard-tooth-surface cycloid steel ball planetary speed reducer | |
| CN112460417A (en) | Single-shaft rotary table with high precision and high resolution | |
| CN216152021U (en) | Grind quick-witted hanging wall mechanism | |
| CN104443368A (en) | Electric brake actuator integrating force sensor and ball screw | |
| CN201239915Y (en) | Precise elevating gear for sander | |
| CN220462949U (en) | Self-locking turntable | |
| CN105508543A (en) | Return-difference-free single-stage cycloidal cone gear speed reducer | |
| CN111151331A (en) | Cone crusher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130828 |