CN109854641B - Rotary stroke limiting method and limiting device - Google Patents
Rotary stroke limiting method and limiting device Download PDFInfo
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- CN109854641B CN109854641B CN201811562449.1A CN201811562449A CN109854641B CN 109854641 B CN109854641 B CN 109854641B CN 201811562449 A CN201811562449 A CN 201811562449A CN 109854641 B CN109854641 B CN 109854641B
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- stop block
- stroke
- disc
- transmission shaft
- pressure disc
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Abstract
The utility model provides a rotatory stroke limit method and stop device, rotatory stroke stop device contains lane dish mechanism, dynamic friction piece, static friction piece, left stop block, travel nut, right stop block and shell body, lane dish mechanism contains left pressure disk, right pressure disk and steel ball, and left pressure disk passes through spline connection with rotatory power shaft, and its right pressure disk and dynamic friction piece fixed connection, and the center of right pressure disk passes through spline connection transmission shaft, static friction piece and shell body fixed connection, and left stop block, travel nut, right stop block connect gradually on the transmission shaft, and the distance between left stop block and the right stop block is travel nut's spacing stroke.
Description
Technical Field
The application relates to a mechanical structure, in particular to a rotary stroke limiting method and a limiting device.
Background
For most rotary motion mechanisms, the over-travel motion brings great potential safety hazards and has serious consequences. The travel limiting device enables the movement mechanism to work only in a limited travel range, and potential safety hazards possibly caused by over-travel movement are eliminated. Therefore, the stroke limit protection device is widely applied to the rotary motion control mechanism.
The current stroke limit protection measure is electrical limit and mechanical limit. The electrical limit is to brake the motion mechanism through an electrical control signal after the motion overtravel is detected, so that the problems of slow response, low reliability and the like exist; the mechanical limit is generally to install a limit stop at the tail end of the moving mechanism, so that the moving impact is large, the limit mechanism needs to bear a large impact load, the problem of difficult installation and arrangement exists in some mechanisms, the limit protection cannot be carried out from a power source, and the limit protection cannot be carried out on the parts between the power source and the tail end of the moving mechanism.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a rotary stroke limiting method and a limiting device, wherein mechanical limiting protection is carried out at a power output end, mechanical limiting protection is carried out from a source, and movement impact is greatly reduced. The integrated design of the device and the power output device is realized, the volume is small, the structure is compact, and the problem of difficult installation and arrangement is avoided.
The rotary stroke limiting method comprises a rotary power shaft and a rotary stroke limiting device, and is characterized in that the rotary stroke limiting device comprises a ball channel disc mechanism, a movable friction plate, a static friction plate, a left stop block, a stroke nut, a right stop block and a shell body, the ball channel disc mechanism comprises a left pressure disc, a right pressure disc and steel balls, the left pressure disc is fixedly connected with the rotary power shaft through a spline, the right pressure disc is fixedly connected with the rotary friction plate, the center of the right pressure disc is connected with a transmission shaft through the spline, the static friction plate is fixedly connected with the shell body, the left stop block, the stroke nut and the right stop block are sequentially connected onto the transmission shaft, the distance between the left stop block and the right stop block is the limiting stroke of the stroke nut, the rotary power shaft drives the left pressure disc of the ball channel disc mechanism to rotate, the left pressure disc drives the right pressure disc and the transmission shaft to rotate through the steel balls, the stroke nut moves between the left stop block and the right stop block along with the rotation of the transmission shaft, and when the stroke moves to the left stop block or the right stop block, the stroke nut limits the rotation between the left pressure disc and the right stop block and the transmission shaft to enable the ball socket disc to move from the left pressure disc to the position, and the friction disc to move to the right, and the friction plate is limited to the transmission shaft to rotate.
The beneficial effects of the application are as follows: compared with the prior mechanical stroke limiting measure, the mechanical limiting protection is carried out at the power output end, the mechanical limiting protection is carried out from the source, and the movement impact is greatly reduced. The integrated design of the device and the power output device is realized, the volume is small, the structure is compact, and the problem of difficult installation and arrangement is avoided. Compared with the prior electrical travel limiting measure, the method has the advantages of quick response and high reliability.
Drawings
FIG. 1 is a schematic diagram of a rotational travel limiting method
Numbering in the figures: 1 a rotary power shaft, 2 a left pressure plate, 3 steel balls, 4 a right pressure plate, 5 a dynamic friction plate, 6 a static friction plate, 7 a left stop block, 8 travel nuts, 9 a right stop block and 10 transmission shafts.
Detailed Description
Referring to the drawings, the rotary stroke limiting device provided by the application comprises a ball path disc mechanism, a dynamic friction plate 5, a static friction plate 6, a left stop block 7, a stroke nut 8, a right stop block 9 and an outer shell, wherein the ball path disc mechanism comprises a left pressurizing disc 2, a right pressurizing disc 4 and steel balls 3, the left pressurizing disc 2 is connected with a rotary power shaft 1 through a spline, the right pressurizing disc 4 is fixedly connected with the dynamic friction plate 5, the center of the right pressurizing disc 4 is connected with a transmission shaft 10 through a spline, the static friction plate 6 is fixedly connected with the outer shell, the left stop block 7, a stroke nut 8 and the right stop block 9 are sequentially connected onto the transmission shaft 10, the distance between the left stop block 7 and the right stop block 9 is the limiting stroke of the stroke nut 8, and the limiting stroke of the stroke nut 8 determines the rotation angle range of the transmission shaft 10.
When in use, the rotary power shaft 1 rotates to drive the left pressure plate 2 of the ball path disc mechanism to rotate, the left pressure plate 2 drives the right pressure plate 4 and the transmission shaft 10 to rotate through the steel balls 3, the travel nut 8 moves between the left stop block 7 and the right stop block 9 along with the rotation of the transmission shaft 10, when the travel nut 8 moves to the position of the left stop block 7 or the right stop block 9, the travel nut 8 limits the rotation of the transmission shaft 10, at the moment, the steel balls 3 of the ball channel disc mechanism climb from the ball socket between the left pressurizing disc 2 and the right pressurizing disc 4, so that the right pressurizing disc 4 drives the movable friction plate 5 to move rightwards, a gap between the movable friction plate 5 and the static friction plate 6 is eliminated, friction braking of the transmission shaft 10 is formed, and the rotation travel limitation of the transmission shaft 10 is realized.
Claims (1)
1. The rotary stroke limiting method comprises a rotary power shaft and a rotary stroke limiting device, and is characterized in that the rotary stroke limiting device comprises a ball channel disc mechanism, a movable friction plate, a static friction plate, a left stop block, a stroke nut, a right stop block and a shell body, the ball channel disc mechanism comprises a left pressure disc, a right pressure disc and steel balls, the left pressure disc is fixedly connected with the rotary power shaft through a spline, the right pressure disc is fixedly connected with the rotary friction plate, the center of the right pressure disc is connected with a transmission shaft through the spline, the static friction plate is fixedly connected with the shell body, the left stop block, the stroke nut and the right stop block are sequentially connected onto the transmission shaft, the distance between the left stop block and the right stop block is the limiting stroke of the stroke nut, the rotary power shaft drives the left pressure disc of the ball channel disc mechanism to rotate, the left pressure disc drives the right pressure disc and the transmission shaft to rotate through the steel balls, the stroke nut moves between the left stop block and the right stop block along with the rotation of the transmission shaft, and when the stroke moves to the left stop block or the right stop block, the stroke nut limits the rotation between the left pressure disc and the right stop block and the transmission shaft to enable the ball socket disc to move from the left pressure disc to the position, and the friction disc to move to the right, and the friction plate is limited to the transmission shaft to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562449.1A CN109854641B (en) | 2018-12-20 | 2018-12-20 | Rotary stroke limiting method and limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562449.1A CN109854641B (en) | 2018-12-20 | 2018-12-20 | Rotary stroke limiting method and limiting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109854641A CN109854641A (en) | 2019-06-07 |
| CN109854641B true CN109854641B (en) | 2023-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811562449.1A Active CN109854641B (en) | 2018-12-20 | 2018-12-20 | Rotary stroke limiting method and limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109854641B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB957598A (en) * | 1961-12-01 | 1964-05-06 | Fawick Corp | Brake operating mechanism |
| US4256206A (en) * | 1978-06-30 | 1981-03-17 | Akebono Brake Industry Company, Ltd | Disc brake |
| US4641737A (en) * | 1985-12-04 | 1987-02-10 | Sundstrand Corporation | Bi-directional overtravel stop |
| US4643290A (en) * | 1985-12-04 | 1987-02-17 | Sundstrand Corporation | Bi-directional overtravel stop |
| CN1176353A (en) * | 1996-07-22 | 1998-03-18 | 易通公司 | Transmission inertia brake with self energizing |
| CN207609698U (en) * | 2017-11-09 | 2018-07-13 | 东莞东晟磁电磁控技术有限公司 | Meet high-speed rotating Bidirectional non-return device |
| CN108443367A (en) * | 2018-05-15 | 2018-08-24 | 北京理工大学 | A kind of brake, Electric Motor Wheel and vehicle |
| CN209511063U (en) * | 2018-12-20 | 2019-10-18 | 中国航空工业集团公司西安飞机设计研究所 | A kind of rotating distance limiting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6644499B2 (en) * | 2015-08-25 | 2020-02-12 | Ntn株式会社 | Automatic clutch device |
-
2018
- 2018-12-20 CN CN201811562449.1A patent/CN109854641B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB957598A (en) * | 1961-12-01 | 1964-05-06 | Fawick Corp | Brake operating mechanism |
| US4256206A (en) * | 1978-06-30 | 1981-03-17 | Akebono Brake Industry Company, Ltd | Disc brake |
| US4641737A (en) * | 1985-12-04 | 1987-02-10 | Sundstrand Corporation | Bi-directional overtravel stop |
| US4643290A (en) * | 1985-12-04 | 1987-02-17 | Sundstrand Corporation | Bi-directional overtravel stop |
| CN1176353A (en) * | 1996-07-22 | 1998-03-18 | 易通公司 | Transmission inertia brake with self energizing |
| CN207609698U (en) * | 2017-11-09 | 2018-07-13 | 东莞东晟磁电磁控技术有限公司 | Meet high-speed rotating Bidirectional non-return device |
| CN108443367A (en) * | 2018-05-15 | 2018-08-24 | 北京理工大学 | A kind of brake, Electric Motor Wheel and vehicle |
| CN209511063U (en) * | 2018-12-20 | 2019-10-18 | 中国航空工业集团公司西安飞机设计研究所 | A kind of rotating distance limiting device |
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| Publication number | Publication date |
|---|---|
| CN109854641A (en) | 2019-06-07 |
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