CN202451674U - Spiral forward/backward 180-degree rotating positioning mechanism - Google Patents
Spiral forward/backward 180-degree rotating positioning mechanism Download PDFInfo
- Publication number
- CN202451674U CN202451674U CN2012200479084U CN201220047908U CN202451674U CN 202451674 U CN202451674 U CN 202451674U CN 2012200479084 U CN2012200479084 U CN 2012200479084U CN 201220047908 U CN201220047908 U CN 201220047908U CN 202451674 U CN202451674 U CN 202451674U
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- chassis
- limiting
- switch
- guide rod
- limit switch
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Abstract
A spiral forward/backward 180-degree rotating positioning mechanism belongs to the technical field of medical equipment. The mechanism is composed of a chassis, a limiting switch A, a limiting switch B, a power output shaft, a guide rod, a zero-position switch C, a main shaft, an eccentric shaft seat, a limiting block and the like, and is characterized in that the power output shaft is connected to the chassis, and drives the chassis to rotate together; the guide rod is linked with the eccentric shaft seat and moves along an involute groove formed on the chassis; the limiting block is fixed to the eccentric shaft seat and capable of rotating around the main shaft; the zero-position switch C, the limiting switch A and the limiting switch B are arranged on the chassis; when the power output shaft rotates, the limiting block on the eccentric shaft seat is capable of triggering different limiting switches in different positions, thus realizing the function of limited stopping; and simultaneously, when the limiting switch fails, the involute groove is applied to realizing the mechanical limiting function. The spiral forward/backward 180-degree rotating positioning mechanism has the advantages of being simple in structure and capable of rotatably positioning devices with a range from -180 degrees to +180 degrees, and simultaneously has mechanical and electrical dual-limiting protection function.
Description
Technical field
The invention belongs to technical field of medical instruments.
Background technique
The development that China's technical field of medical instruments is being advanced by leaps and bounds, and the use of rotary positioning structure is also more and more.Most rotary positioning structure in the market can not position 0 ° to 180 ° and-180 ° to 0 ° simultaneously; And the rotation positioning mode of utilizing spiral involute groove and installing limit switch additional not only maximum magnitude saving the stroke space of location, and apparatus structure compact, good reliability.
Summary of the invention
Goal of the invention of the present invention is: for overcoming the deficiency of above-mentioned existence; Use the combination of spiral involute groove and eccentric stiffener; But increased the orientation angle scope of whirligig, simple and compact for structure, good reliability satisfies the needs of location on a large scale to rotating machinery.
The technical solution adopted for the present invention to solve the technical problems is: its structure has chassis, limit switch A, limit switch B, pto, guide rod, zero-bit switch C, main shaft; Parts such as eccentric axle bed, limiting stopper are formed; Its technical characteristics is: pto links with the chassis; When the pto outputting power, drive the chassis and rotate together, and guide rod links with eccentric axle bed, limiting stopper is fixed on the eccentric axle bed; Form eccentric stiffener together around main axis rotation, guide rod moves along the involute groove on the chassis.The dead-center position fixed zero switch C that on the chassis, sets simultaneously; Clockwise 180 ° of fixed limit switch A; Counterclockwise 180 ° of fixed limit switch B; When pto rotated, the limiting stopper on the eccentric axle bed can trigger different limit switches in different positions, utilized electrical control to realize spacing parking function.When limit switch lost efficacy, there is the involute groove on the chassis to realize the mechanical position limitation function more simultaneously.
In sum, the utility model has distinguishing feature from the more existing rotary positioning structure of practical angle:
1, the utility model applied range, orientation angle is big, and most of rotating machinerys all are suitable for.
2, the utility model is simple in structure, and good reliability has machinery and electric dual position limitation protection.
Description of drawings
Fig. 1 is an embodiments of the invention structure plan view.
1. chassis among the figure, 2. limit switch A, 3. limit switch B, 4. pto, 5. guide rod, 6. zero-bit switch C, 7. main shaft, 8. eccentric axle bed, 9. limiting stopper.
Embodiment
The contrast accompanying drawing, this mechanism is by a chassis (1), limit switch A (2), limit switch B (3), pto (4), guide rod (5), zero-bit switch C (6), main shaft (7), and eccentric axle bed (8), limiting stopper (9) constitute.Its implementation is: and the involute groove moves along the chassis for pto (4) outputting power → chassis (1) rotation → guide rod (5) and limiting stopper (9) → and eccentric axle bed (8) triggers zero-bit switch C (6), limit switch A (2), limit switch B (3) → utilize electrical control to realize spacing brake function around main shaft (7) rotation → limiting stopper (9) respectively at diverse location; When electrical control was lost efficacy, there is the involute groove on the chassis to realize the mechanical position limitation protective function again.Its advantage is: simple in structure, can carry out ± 180 ° of rotation positioning to device, and machinery and electric dual position limitation protection function are arranged simultaneously.
Claims (1)
1. 180 ° of rotary positioning mechanisms of a spiral clockwise and anticlockwise; Its structure has chassis (1), limit switch A (2), limit switch B (3), pto (4), guide rod (5), zero-bit switch C (6), main shaft (7); Eccentric axle bed (8), limiting stopper parts such as (9) are formed, and its technical characteristics is: pto (4) links with chassis (1), and guide rod (5) links with eccentric axle bed (8); Limiting stopper (9) is fixed on the eccentric axle bed (8); Form eccentric stiffener together around main shaft (7) rotation, guide rod moves along the involute groove on the chassis, the dead-center position fixed zero switch C (6) that on the chassis, sets simultaneously; Clockwise 180 ° of limit switch A (2), counterclockwise 180 ° of limit switch B (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200479084U CN202451674U (en) | 2012-02-15 | 2012-02-15 | Spiral forward/backward 180-degree rotating positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200479084U CN202451674U (en) | 2012-02-15 | 2012-02-15 | Spiral forward/backward 180-degree rotating positioning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451674U true CN202451674U (en) | 2012-09-26 |
Family
ID=46867540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200479084U Expired - Fee Related CN202451674U (en) | 2012-02-15 | 2012-02-15 | Spiral forward/backward 180-degree rotating positioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451674U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990024A (en) * | 2019-05-06 | 2019-07-09 | 内蒙古工业大学 | A limit mechanism greater than plus or minus 180° |
| CN110083034A (en) * | 2019-06-04 | 2019-08-02 | 珠海天威飞马打印耗材有限公司 | A kind of cartridge |
| CN112664596A (en) * | 2020-12-11 | 2021-04-16 | 兰州飞行控制有限责任公司 | Mechanical rotation limiting device and limiting method |
-
2012
- 2012-02-15 CN CN2012200479084U patent/CN202451674U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990024A (en) * | 2019-05-06 | 2019-07-09 | 内蒙古工业大学 | A limit mechanism greater than plus or minus 180° |
| CN109990024B (en) * | 2019-05-06 | 2020-07-10 | 内蒙古工业大学 | A limit mechanism greater than plus or minus 180° |
| CN110083034A (en) * | 2019-06-04 | 2019-08-02 | 珠海天威飞马打印耗材有限公司 | A kind of cartridge |
| CN112664596A (en) * | 2020-12-11 | 2021-04-16 | 兰州飞行控制有限责任公司 | Mechanical rotation limiting device and limiting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20150215 |
|
| EXPY | Termination of patent right or utility model |