CN206159645U - Valve shaft prevent twist -off structure - Google Patents
Valve shaft prevent twist -off structure Download PDFInfo
- Publication number
- CN206159645U CN206159645U CN201621140052.XU CN201621140052U CN206159645U CN 206159645 U CN206159645 U CN 206159645U CN 201621140052 U CN201621140052 U CN 201621140052U CN 206159645 U CN206159645 U CN 206159645U
- Authority
- CN
- China
- Prior art keywords
- valve shaft
- valve
- connecting axle
- connection frame
- 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.)
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- Details Of Valves (AREA)
- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model provides a valve shaft prevent twist -off structure, includes connecting axle and splined connection frame, through the locating pin location between connecting axle and the link to through bolt fixed connection, the processing of splined connection frame has the internal spline, with the external splines meshing of processing on the valve shaft, and connecting axle and drive arrangement's drive shaft fixed connection. The beneficial effects of the utility model are that: receive under the condition of unusual atress the bolt between first twist -off connecting axle and the splined connection frame at the valve shaft, make the valve shaft lose the too big moment that the drive end transmission was come to this reaches the protection valve shaft not by the mesh of twist -off, later stage maintenance only needs to change the bolt between connecting axle and the splined connection frame, and does not need the whole valve of dismouting to change the valve shaft, makes the maintenance of valve not only convenient but also economical fast.
Description
Technical field
This utility model is related to a kind of the anti-of valve shaft and twists off structure.
Background technology
The output torque of generally driving means is determined by series, and the calculating torque of valve shaft is that value of calculation is multiplied by suitably
Coefficient, the driving means torque for often selecting more than torque is calculated, when having foreign body, sealing pair jam or machinery in valve passage
When spacing adjustment is unreasonable, valve shaft is driven that the torque that device passes over is excessive, and valve shaft has the possibility of twist off failure.
Utility model content
The purpose of this utility model is to provide a kind of rational in infrastructure, can effective protection valve shaft prevent twist off structure.
It is that a kind of the anti-of valve shaft twists off structure that this utility model solves the technical scheme that its technical problem adopted, including
Connecting shaft and spline connection frame, by positioning finger setting between connecting shaft and link, and are bolted to connection, and spline connects
Connect frame and be machined with internal spline, engage with the external splines processed on valve shaft, connecting shaft is fixedly connected with the drive shaft of driving means.
The beneficial effects of the utility model are：Connecting shaft is first twisted off in the case where valve shaft is subject to abnormal stress to connect with spline
The bolt between frame is connect, makes valve shaft lose the excessive torque that drive end is passed over, reached with this and protect what valve shaft was not twisted off
Purpose；Later period maintenance need to only change the bolt between connecting shaft and spline connection frame, change without dismounting whole valve
Valve shaft, makes the maintenance of valve not only quick and convenient but also economy.
Description of the drawings
Fig. 1 is the structural representation of embodiment.
In figure：1. bolt；2. alignment pin；3. spline connection frame；4. connecting shaft；5. valve shaft；6. flat key；7. drive shaft.
Specific embodiment
As shown in figure 1, a kind of the anti-of valve shaft twists off structure, including connecting shaft 4 and spline connection frame 3, connecting shaft 4 be connected
Positioned by alignment pin 2 between frame 3, and be fixedly connected by bolt 1, spline connection frame 3 is machined with internal spline, on valve shaft 5
The external splines engagement of processing, connecting shaft 4 is fixedly connected with the drive shaft 7 of driving means.
During work, the drive shaft 7 of driving means passes torque to connecting shaft 4 by flat key 6, and connecting shaft 4 passes through bolt 1
Spline connection frame 3 is passed torque to, spline connection frame 3 passes to valve shaft 5 by spline connection, is received extremely in valve shaft 5
The bolt 1 between connecting shaft 4 and spline connection frame 3 is first twisted off in the case of power, makes valve shaft 5 lose the mistake that drive end is passed over
High-torque, so as to avoid valve shaft from twisting off.
Claims (1)
1. a kind of the anti-of valve shaft twists off structure, including connecting shaft and spline connection frame, it is characterised in that：The connecting shaft be connected
By positioning finger setting between frame, and be bolted to connection, the spline connection frame is machined with internal spline, with valve shaft on plus
The external splines engagement of work, the connecting shaft is fixedly connected with the drive shaft of driving means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621140052.XU CN206159645U (en) | 2016-10-20 | 2016-10-20 | Valve shaft prevent twist -off structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621140052.XU CN206159645U (en) | 2016-10-20 | 2016-10-20 | Valve shaft prevent twist -off structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206159645U true CN206159645U (en) | 2017-05-10 |
Family
ID=58655110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621140052.XU Active CN206159645U (en) | 2016-10-20 | 2016-10-20 | Valve shaft prevent twist -off structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206159645U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411101A (en) * | 2018-01-26 | 2018-08-17 | 贵州钢绳股份有限公司 | Steel wire thermal treatment production line admission machine transmission system is transformed |
-
2016
- 2016-10-20 CN CN201621140052.XU patent/CN206159645U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411101A (en) * | 2018-01-26 | 2018-08-17 | 贵州钢绳股份有限公司 | Steel wire thermal treatment production line admission machine transmission system is transformed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |