CN106884947B - A kind of multistage trapezoidal screw prevents locking device - Google Patents
A kind of multistage trapezoidal screw prevents locking device Download PDFInfo
- Publication number
- CN106884947B CN106884947B CN201710107012.8A CN201710107012A CN106884947B CN 106884947 B CN106884947 B CN 106884947B CN 201710107012 A CN201710107012 A CN 201710107012A CN 106884947 B CN106884947 B CN 106884947B
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- Prior art keywords
- ratchet
- screw
- lead screw
- outer ratchet
- handle
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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
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
Locking device is prevented the present invention relates to a kind of multistage trapezoidal screw, it includes outer ratchet lid (7), outer ratchet spring (8), dynamic outer ratchet (9), fixed outer ratchet (10), inner cover (13), handle ratchet wheel spring (14) and handle ratchet wheel (15) that this, which prevents locking device,；Handle ratchet wheel (15), the end for moving outer ratchet (9), fixed outer ratchet (10) and screw (2) are provided with ratchet；Handle ratchet wheel (15), the end for moving outer ratchet (9), fixed outer ratchet (10) and screw (2) are provided with ratchet；Dynamic outer ratchet (9), outer ratchet spring (8) and outer ratchet lid (7) are successively sleeved on lead screw (1) one end, fixed outer ratchet (10), screw (2), handle ratchet wheel (15), handle ratchet wheel spring (14) and inner cover (13) are successively sleeved on the other end of lead screw (1), the device anti-locking, it is compact-sized, be quick on the draw and high reliablity, and be able to achieve high-speed mobile.
Description
Technical field:
The invention belongs to technical field of mechanical transmission, and in particular to a kind of multistage trapezoidal screw prevents locking device, can
Be widely used in electronic directly perpendicular device, electronic act is stretched, numerically-controlled machine tool, control execution system, positioning system, plastics machinery, military project,
High-mechanic linear motion system, measuring device, high speed rotary motion etc., for converting linear motion for rotary motion.
Background technique
During multistage lead screw high-speed drive, lead screw transmissions at different levels in place when, since effect of inertia leads to lead screw and silk
Coupling mechanism force is excessive between box thread pair, finally causes lead screw and screw locked, drive system can not be such that lead screw continues to rotate, and cause
System can not work normally.
Summary of the invention
Locking device is prevented it is an object of the present invention to provide a kind of multistage trapezoidal screw, solves multistage lead screw high-speed drive
The technical problem that lead screw and screw lock in the process.
The technical scheme is that a kind of locking device that prevents of multistage trapezoidal screw includes outer ratchet lid, outer ratchet
Spring, dynamic outer ratchet, fixed outer ratchet, inner cover, handle ratchet wheel spring and handle ratchet wheel；Handle ratchet wheel moves outer ratchet, fixed outer ratchet and screw
End is provided with ratchet；
Outer ratchet spring is packed into outer ratchet lid, and dynamic outer ratchet, outer ratchet spring and outer ratchet lid are successively sleeved on lead screw
On one end, dynamic outer ratchet is connect with lead screw by spline, and outer ratchet lid line is fixedly connected with lead screw, and handle ratchet wheel spring is packed into inner cover
Interior, fixed outer ratchet, screw, handle ratchet wheel, handle ratchet wheel spring and inner cover are successively sleeved on the other end of lead screw, and inner cover is fixed with lead screw
Connection, handle ratchet wheel is connect with lead screw by spline, and handle ratchet wheel is installed in opposite directions with dynamic outer ratchet, fixed outer ratchet and the fixed company of screw
It connects, screw screws on the screw thread in the middle part of lead screw.
The invention has the advantages that 1) solve the technology that lead screw and screw lock during multistage lead screw high-speed drive
Problem, compact-sized simple, good reliability is easy to implement；2) structure of the invention can be reliably by the torque of previous stage lead screw
Accurately, it is reliably transmitted on next stage lead screw, enables two-stage lead screw to make corresponding synchronous rotary movement, have rotation steady
It is fixed, reliable, be quick on the draw, it is fluent the features such as, can get the synchronous effect of good lead screw；3) present invention uses ratchet structure
Anti-locking high-speed, multi-stage trapezoidal screw is connect by a friction duplicate invoice between the lead screw of adjacent two-stage screw-nut pair, and friction is secondary
It is packed on prime lead screw, and is configured on rear class lead screw, realize multistage lead screw linkage.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for preventing locking device of multistage trapezoidal screw of the present invention；
Fig. 2 uses the structural schematic diagram of multistage trapezoidal screw of the invention；1 in figure, level-one lead screw 2, level-one screw 3,
Second level lead screw 4, second level screw 5, three-level lead screw 6, three-level screw
Fig. 3 is the structural schematic diagram of screw in the present invention；
Fig. 4 is the structural schematic diagram of fixed outer ratchet in the present invention；
Fig. 5 is schematic perspective view of the invention；
Fig. 6 is the structural schematic diagram of default ratchet in the present invention；
Fig. 7 is the structural schematic diagram that ratchet moves in present invention China and foreign countries；
Fig. 8 is the structural schematic diagram of lead screw in the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawings of the specification.
As depicted in figs. 1 and 2, a kind of locking device that prevents of multistage trapezoidal screw of the present invention includes outer ratchet lid 7, outer spine
Take turns spring 8, dynamic outer ratchet 9, fixed outer ratchet 10, inner cover 13, handle ratchet wheel spring 14 and handle ratchet wheel 15.Handle ratchet wheel 15, dynamic outer ratchet 9,
The end of fixed outer ratchet 10 and screw 2 is provided with ratchet.The middle part of lead screw 1 is provided with screw thread, and the both ends of lead screw 1 are spline knot
Structure.
Outer ratchet spring 8 is packed into outer ratchet lid 7, and dynamic outer ratchet 9, outer ratchet spring 8 and outer ratchet lid 7 are successively sleeved on
On 1 one end of lead screw, and it is located at the thread head of one end on lead screw 1.Dynamic outer ratchet 9 is connect with lead screw 1 by spline, outer ratchet lid
7 are connect by screw thread with lead screw 1.Handle ratchet wheel spring 14 is packed into inner cover 13, and inner cover 13, handle ratchet wheel spring 14 and handle ratchet wheel 15 successively cover
On the other end of lead screw 1, it is located at and is located at the thread head of 1 other end of lead screw, and handle ratchet wheel 15 and dynamic outer ratchet 9 are opposite
Installation.Inner cover 13 is fixedly connected with lead screw 1, and using being threadedly coupled, handle ratchet wheel 15 and lead screw 1 are connected the fixed form by spline
It connects.Fixed outer ratchet 10 is sleeved on 1 middle part of lead screw, and outer ratchet 10 is fixedly connected with screw 2 calmly, also can be made one, when being used for
When multistage lead screw transmission, fixed outer ratchet 10 can also be made of one with ratchet lid outside next stage.Screw 2 and 1 middle part screw thread of lead screw
It screws.Gear 18 is sleeved on lead screw 1, and gear 18 is the driving wheel of lead screw 1.
When in use, if it is multistage lead screw transmission, can be installed in every grade of lead screw pair one it is of the invention anti-lock
Tight device.
Work basic principle of the invention is: as depicted in figs. 1 and 2, passing through motor drive power to gear 18, gear 18
Lead screw 1 is driven to rotate, while lead screw 1, under the action of screw 2, lead screw 1 is mobile, when lead screw 1 is moved to certain distance, handle ratchet wheel
15 under the action of inner cover 13 and handle ratchet wheel spring 14, and handle ratchet wheel 15 is smooth in place, the ratchet of 15 end face of handle ratchet wheel and 2 end face of screw
Ratchet engagement, so that lead screw 1 with respect to 2 rotation stop of screw, i.e., lead screw 1 drives screw 2 to rotate together, further fixed outer 10 band of ratchet
Dynamic next stage lead screw rotation, when next stage lead screw is moved to certain position, work of the next stage handle ratchet wheel in next stage handle ratchet wheel spring
Make next stage handle ratchet wheel smoothly in place and with respect to rotation stop under；Successively the successively moving process of multistage lead screw is realized in rotation.
Motor reversal, gear 18 drive lead screw 1 to rotate backward, and the reverse movement of lead screw 1 arrives certain position, and dynamic outer ratchet 9 exists
Under the action of outer ratchet lid 7 and outer ratchet spring 8, moves outer ratchet 9 smoothly in place, move the ratchet of outer 9 end face of ratchet and determine outer spine
The ratchet engagement of 10 end faces is taken turns, so that lead screw 1 is with respect to 2 rotation stop of screw；Fixed outer ratchet 10 drives next stage lead screw to rotate backward, under
Level-one lead screw reverse movement is to certain distance, and for the dynamic outer ratchet of next stage outside next stage under the action of ratchet spring, next stage is dynamic
Smoothly in place and rotation stop, successively rotation realizes that lead screw moves backward process to outer ratchet.
Claims (1)
1. a kind of multistage trapezoidal screw prevents locking device, it is characterized in that: this prevent locking device include outer ratchet lid (7),
Outer ratchet spring (8), dynamic outer ratchet (9), fixed outer ratchet (10), inner cover (13), handle ratchet wheel spring (14) and handle ratchet wheel (15)；Interior spine
Wheel (15), the end for moving outer ratchet (9), fixed outer ratchet (10) and screw (2) are provided with ratchet；
Outer ratchet spring (8) is packed into outer ratchet lid (7), moves outer ratchet (9), outer ratchet spring (8) and outer ratchet lid (7) successively
It is sleeved on lead screw (1) one end, dynamic outer ratchet (9) is connect with lead screw (1) by spline, and outer ratchet lid (7) and lead screw (1) are fixed
Connection, handle ratchet wheel spring (14) are packed into inner cover (13), fixed outer ratchet (10), screw (2), handle ratchet wheel (15), handle ratchet wheel spring (14)
Successively be sleeved on the other end of lead screw (1) with inner cover (13), inner cover (13) is fixedly connected with lead screw (1), handle ratchet wheel (15) with
Lead screw (1) is connected by spline, and handle ratchet wheel (15) and dynamic outer ratchet (9) are installed in opposite directions, and fixed outer ratchet (10) and screw (2) are solid
Fixed connection, screw (2) screw on the screw thread in the middle part of lead screw (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710107012.8A CN106884947B (en) | 2017-02-27 | 2017-02-27 | A kind of multistage trapezoidal screw prevents locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710107012.8A CN106884947B (en) | 2017-02-27 | 2017-02-27 | A kind of multistage trapezoidal screw prevents locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106884947A CN106884947A (en) | 2017-06-23 |
| CN106884947B true CN106884947B (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710107012.8A Active CN106884947B (en) | 2017-02-27 | 2017-02-27 | A kind of multistage trapezoidal screw prevents locking device |
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| CN (1) | CN106884947B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054107A (en) * | 2019-03-22 | 2019-07-26 | 贵州力登科技发展有限公司 | A kind of medium-and-large-sized mechanical lift cylinder of Multi-stage transmission |
| CN110065902A (en) * | 2019-03-28 | 2019-07-30 | 杭州恒宏机械有限公司 | Muff-coupling trapezoidal screw rod anti-blocking structure |
| CN110469566B (en) * | 2019-09-11 | 2024-04-19 | 中国人民解放军第六九O五工厂 | Multi-screw rod section-by-section lifting rod |
| CN112879519B (en) * | 2021-01-05 | 2022-05-27 | 重庆大学 | Single-drive worm screw device for outputting linear and rotary motion |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202195021U (en) * | 2011-08-22 | 2012-04-18 | 济南科汇试验设备有限公司 | Clearance eliminating device of guide screw rod |
| CN102889352A (en) * | 2012-10-15 | 2013-01-23 | 中国航天科工集团第二研究院二十三所 | Backstop used for transmission spacing of lead screw and silk nut |
| CN205715511U (en) * | 2016-04-19 | 2016-11-23 | 杭州恒宏机械有限公司 | A kind of socket leading screw |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016171676A1 (en) * | 2015-04-21 | 2016-10-27 | Helix Linear Technologies | Anti-backlash nut assembly |
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2017
- 2017-02-27 CN CN201710107012.8A patent/CN106884947B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202195021U (en) * | 2011-08-22 | 2012-04-18 | 济南科汇试验设备有限公司 | Clearance eliminating device of guide screw rod |
| CN102889352A (en) * | 2012-10-15 | 2013-01-23 | 中国航天科工集团第二研究院二十三所 | Backstop used for transmission spacing of lead screw and silk nut |
| CN205715511U (en) * | 2016-04-19 | 2016-11-23 | 杭州恒宏机械有限公司 | A kind of socket leading screw |
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| Publication number | Publication date |
|---|---|
| CN106884947A (en) | 2017-06-23 |
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