CN2849390Y - Composite structure thread driving shaft - Google Patents
Composite structure thread driving shaft Download PDFInfo
- Publication number
- CN2849390Y CN2849390Y CN 200520045032 CN200520045032U CN2849390Y CN 2849390 Y CN2849390 Y CN 2849390Y CN 200520045032 CN200520045032 CN 200520045032 CN 200520045032 U CN200520045032 U CN 200520045032U CN 2849390 Y CN2849390 Y CN 2849390Y
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- composite structure
- screw
- thread
- driving shaft
- 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
Links
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- Transmission Devices (AREA)
Abstract
The utility model discloses a thread transmission shaft with a composite structure, which is mainly composed of a transmission shaft. The thread transmission shaft with a composite structure is characterized in that the transmission shaft is hollow, a fixing screw is arranged in the transmission shaft and the fixing screw and the transmission shaft are in sliding fit. The thread transmission shaft with a composite structure has a reasonable structure. Not only can the thread transmission shaft with a composite structure be ensured that the thread transmission shaft with a composite structure is not easy to generate swing in a vertical direction, but also the stronger rotary flexibility of the thread transmission shaft with a composite structure is ensured.
Description
Technical field:
The utility model relates to the transmission shaft in a kind of safety valves for gas, particularly relates to its composite structure.
Background technique:
At present, in safety valves for gas, in order to ensure screw-thread drive shaft in the course of the work, Vertical direction is difficult for producing dancing, and the technological means of employing is that the two ends of screw thread transmission are inserted respectively in the nest hole of positioning plate axis hole and sealing motor case.But consequent defective is, produced bigger frictional force, causes its flexibility of revolution poor.
Summary of the invention:
The purpose of this utility model is, provides a kind of and can effectively overcome above-mentioned defective, and rotation is the screw-thread drive shaft of strong composite structure flexibly.To achieve these goals, the technological scheme that the utility model adopted is that a kind of screw-thread drive shaft of composite structure mainly is made up of a transmission shaft, it is characterized in that: described transmission shaft is a hollow, is provided with a standing screw in it and is slidingly matched with it.Owing to adopt such scheme, to be not difficult to draw as drawing a conclusion, the utility model is rational in infrastructure, is skillfully constructed, and has both kept screw-thread drive shaft to be difficult for producing swing in Vertical direction, has guaranteed the flexibility of revolution that it is stronger again, the tool promotional value.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is described in further detail.
Accompanying drawing is a structural representation of the present utility model.
Embodiment:
Referring to accompanying drawing, the transmission shaft 10 of the screw-thread drive shaft of this composite structure is a hollow, the standing screw 20 for being slidingly matched with it in it.Because both are slidingly matched, and standing screw is selected for use from the good material of sliding performance and is made, so guaranteed stronger flexibility of revolution, and the two ends of standing screw and positioning plate axis hole and nest close joining of hole have also kept screw-thread drive shaft to be difficult for producing swing in Vertical direction simultaneously.
Claims (1)
1, a kind of screw-thread drive shaft of composite structure mainly is made up of a transmission shaft, it is characterized in that: described transmission shaft is a hollow, is provided with a standing screw in it and is slidingly matched with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520045032 CN2849390Y (en) | 2005-09-14 | 2005-09-14 | Composite structure thread driving shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520045032 CN2849390Y (en) | 2005-09-14 | 2005-09-14 | Composite structure thread driving shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849390Y true CN2849390Y (en) | 2006-12-20 |
Family
ID=37521874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520045032 Expired - Fee Related CN2849390Y (en) | 2005-09-14 | 2005-09-14 | Composite structure thread driving shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849390Y (en) |
-
2005
- 2005-09-14 CN CN 200520045032 patent/CN2849390Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |