CN202358891U - Force limiting device - Google Patents
Force limiting device Download PDFInfo
- Publication number
- CN202358891U CN202358891U CN2011205474523U CN201120547452U CN202358891U CN 202358891 U CN202358891 U CN 202358891U CN 2011205474523 U CN2011205474523 U CN 2011205474523U CN 201120547452 U CN201120547452 U CN 201120547452U CN 202358891 U CN202358891 U CN 202358891U
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- CN
- China
- Prior art keywords
- force
- force limiting
- ball
- seat
- perforation
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a force limiting device. A force limiting seat of the device is provided with a plurality of perforations, each perforation is internally provided with a force limiting spring and a mandril, and the mandril is connected with the force limiting spring; a ball seat is internally provided with a centripetal ball bearing, and a cross section of the ball seat is provided with a plurality of concave holes corresponding to the perforations; a force limiting ball is connected with each force limiting spring, and the force limiting balls are located in the perforations as well as the concave holes; the force limiting seat and the ball seat are joined through the force limiting balls; and the ball seat is internally provided with a thrust bearing, and the thrust bearing is located at the front end of the centripetal ball bearing and is joined with the force limiting seat. By adoption of the force limiting device, the thrust bearing bears an axial force, and the centripetal ball bearing is prevented from damaging, so that the service life of the force limiting device is prolonged.
Description
Technical field
The utility model relates to a kind of force limiting device.
Background technology
In the patent No. is a kind of force limiting device of ZL201020502986.X, has several perforation on its force limiter, and is provided with force-limit spring and push rod in the perforation, and push rod and force-limit spring join; Be provided with radial ball bearing in the ball seat, the cross section of ball seat corresponding several shrinkage pools that are provided with and bore a hole; Limit power ball and force-limit spring join, and limit power ball is arranged in perforation and shrinkage pool simultaneously, and force limiter is engaged togather through limit power ball with ball seat mutually.The force limiting device of this structure, the axial force that bears because of radial ball bearing is little, is prone to cause radial ball bearing to damage after force limiter is stressed, has influenced the service life of force limiting device.
Summary of the invention
The purpose of the utility model provides a kind of force limiting device that can improve service life.
The technical scheme that the utility model is taked is: a kind of force limiting device, and have several perforation on the force limiter, and be provided with force-limit spring and push rod in the perforation, push rod and force-limit spring join; Be provided with radial ball bearing in the ball seat, the cross section of ball seat corresponding several shrinkage pools that are provided with and bore a hole; Limit power ball and force-limit spring join, and limit power ball is arranged in perforation and shrinkage pool simultaneously, and force limiter is engaged togather through limit power ball with ball seat mutually, it is characterized in that in ball seat, being provided with thrust baring, and thrust baring is positioned at the front end of radial ball bearing and is connected with force limiter.
Adopt the utility model, can bear axial force, prevent that radial ball bearing is impaired, thereby prolong the service life of force limiting device through thrust baring.
Description of drawings
Fig. 1 is the utility model scheme drawing.
Sequence number is represented among the figure: push rod 1, force-limit spring 2, perforation 3, force limiter 4, limit power ball 5, ball seat 6, thrust baring 7, radial ball bearing 8 and shrinkage pool 9.
The specific embodiment
Embodiment below in conjunction with concrete is described further the utility model.
With reference to Fig. 1, have several perforation 3 on the force limiter 4, several perforation 3 are regular symmetric shape, are provided with force-limit spring 2 and push rod 1 in the perforation 3, and push rod 1 joins with force-limit spring 2; Be provided with thrust baring 7 and radial ball bearing 8 in the ball seat 6, thrust baring 7 is positioned at the front end of radial ball bearing 8 and is connected with force limiter 4, the cross section of ball seat 63 corresponding several shrinkage pools 9 that are provided with and bore a hole, and shrinkage pool 9 is regular symmetric shape; Limit power ball 5 joins with force-limit spring 2, and limit power ball 5 is arranged in perforation 3 and shrinkage pool 9 simultaneously, and force limiter 4 is engaged togather through limit power ball 5 with ball seat 6 mutually.
During use, regulate limit power size through push rod 1 extension or compression force-limit spring 2 as required earlier, afterwards; Start mechanical equipment; When mechanical drive to force limiter 4, if ball seat 6 is stressed excessive, limit power ball 5 can skid between perforation 3 and shrinkage pool 9; Ball seat 6 can stop operating, and can realize the purpose to mechanical drive limit power.Simultaneously, because of bear the axial force that force limiter 4 produces through thrust baring 7, prevent that radial ball bearing 8 is impaired, thereby prolong the service life of force limiting device.
Claims (1)
1. a force limiting device has several perforation on the force limiter, and is provided with force-limit spring and push rod in the perforation, and push rod and force-limit spring join; Be provided with radial ball bearing in the ball seat, the cross section of ball seat corresponding several shrinkage pools that are provided with and bore a hole; Limit power ball and force-limit spring join, and limit power ball is arranged in perforation and shrinkage pool simultaneously, and force limiter is engaged togather through limit power ball with ball seat mutually, it is characterized in that in ball seat, being provided with thrust baring, and thrust baring is positioned at the front end of radial ball bearing and is connected with force limiter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205474523U CN202358891U (en) | 2011-12-09 | 2011-12-09 | Force limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205474523U CN202358891U (en) | 2011-12-09 | 2011-12-09 | Force limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202358891U true CN202358891U (en) | 2012-08-01 |
Family
ID=46570095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205474523U Expired - Fee Related CN202358891U (en) | 2011-12-09 | 2011-12-09 | Force limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202358891U (en) |
-
2011
- 2011-12-09 CN CN2011205474523U patent/CN202358891U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20121209 |