CN203308874U - Hand wheel anti-theft device - Google Patents
Hand wheel anti-theft device Download PDFInfo
- Publication number
- CN203308874U CN203308874U CN2013202965611U CN201320296561U CN203308874U CN 203308874 U CN203308874 U CN 203308874U CN 2013202965611 U CN2013202965611 U CN 2013202965611U CN 201320296561 U CN201320296561 U CN 201320296561U CN 203308874 U CN203308874 U CN 203308874U
- Authority
- CN
- China
- Prior art keywords
- hand wheel
- valve rod
- handwheel
- steel ball
- pit
- 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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- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The utility model discloses a hand wheel anti-theft device which comprises a valve rod, an upper seal cover, a screw, a side screw, a steel ball, a lock nut, a hand wheel, a key and a valve rod nut. The valve rod is sleeved with the valve rod nut, and the hand wheel is arranged on the valve rod nut through the key. The lower end of the hand wheel is clamped through an annular boss structure on the valve rod nut, and the upper end of the hand wheel is tightly pressed through the lock nut. The nut is tightly screwed in the lock nut and axially abuts against the hand wheel. A pit is formed in the outer wall of the lock nut, the steel ball is embedded in the pit, and the lock nut is sleeved with the upper seal cover. The inner wall of the upper seal cover is provided with two pit structures which are used for clamping the steel ball. A pit structure of the inner wall of the upper seal cover is provided with a threaded hole in the radial direction, and the side screw is arranged in the threaded hole. The hand wheel anti-theft device has the advantages that the principle and the structure are simple, the upper seal cover is quite difficult to take off by a layman without tools, the hand wheel is difficult to detach, the anti-theft effect is good, and the smooth safety production is facilitated.
Description
Technical field
The utility model relates to mechanical structure field, particularly a kind of hand wheel antitheft device.
Background technique
Existing field valve is controlled handwheel, and the structure be connected with valve lever does not generally possess anti-theft feature, and on unattended oil production equipment, often the stolen phenomenon due to handwheel is serious in the wild, causes work normally not carry out.
The model utility content
The purpose of this utility model is antitheft in order to realize, the spy provides a kind of hand wheel antitheft device.
The utility model provides a kind of hand wheel antitheft device, it is characterized in that: described hand wheel antitheft device, comprise valve rod 1, and upper cover 2, screw 3, side screw 4, steel ball 5, locking nut 6, handwheel 7, be good for 8, Stem Mut 9;
Wherein: Stem Mut 9 is enclosed within on valve rod 1, handwheel 7 is arranged on Stem Mut 9 by strong 8, block by the annular boss structure on Stem Mut 9 lower end of handwheel 7, the upper end of handwheel 7, by locking nut 6, compress, screw 3 is tightened in locking nut 6, axially hold out against handwheel 7, the outer wall of locking nut 6 is with pit, steel ball 5 is embedded in pit, upper cover 2 is enclosed within the outside of locking nut 6, the inwall of upper cover 2 is with two bowl configurations, for tightening steel ball 5, a bowl configurations radial direction of upper cover 2 inwalls is threaded hole, side screw 4 is arranged in tapped hole.
Described strong 8 is flat key.
Described side screw 4 is sunk screw.
Advantage of the present utility model:
Hand wheel antitheft device described in the utility model, theory structure is simple, and the layman is not in the situation that have instrument to be difficult to take off upper cover, and handwheel is not quick detachable, good anti-theft effect, what be conducive to keep the safety in production carries out smoothly.
The accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the utility model is described in further detail:
Fig. 1 is hand wheel antitheft device theory structure schematic diagram.
Embodiment
Embodiment 1
The present embodiment provides a kind of hand wheel antitheft device, it is characterized in that: described hand wheel antitheft device, comprise valve rod 1, and upper cover 2, screw 3, side screw 4, steel ball 5, locking nut 6, handwheel 7, be good for 8, Stem Mut 9;
Wherein: Stem Mut 9 is enclosed within on valve rod 1, handwheel 7 is arranged on Stem Mut 9 by strong 8, block by the annular boss structure on Stem Mut 9 lower end of handwheel 7, the upper end of handwheel 7, by locking nut 6, compress, screw 3 is tightened in locking nut 6, axially hold out against handwheel 7, the outer wall of locking nut 6 is with pit, steel ball 5 is embedded in pit, upper cover 2 is enclosed within the outside of locking nut 6, the inwall of upper cover 2 is with two bowl configurations, for tightening steel ball 5, a bowl configurations radial direction of upper cover 2 inwalls is threaded hole, side screw 4 is arranged in tapped hole.
Described strong 8 is flat key.
Described side screw 4 is sunk screw.
Claims (3)
1. hand wheel antitheft device is characterized in that: described hand wheel antitheft device comprises valve rod (1), upper cover (2), screw (3), side screw (4), steel ball (5), locking nut (6), handwheel (7), strong (8), Stem Mut (9);
Wherein: Stem Mut (9) is enclosed within on valve rod (1), handwheel (7) is arranged on Stem Mut (9) by strong (8), block by the annular boss structure on Stem Mut (9) lower end of handwheel (7), the upper end of handwheel (7), by locking nut (6), compress, screw (3) is tightened in locking nut (6), axially hold out against handwheel (7), the outer wall of locking nut (6) is with pit, steel ball (5) is embedded in pit, upper cover (2) is enclosed within the outside of locking nut (6), the inwall of upper cover (2) is with two bowl configurations, for tightening steel ball (5), a bowl configurations radial direction of upper cover (2) inwall is threaded hole, side screw (4) is arranged in tapped hole.
2. according to hand wheel antitheft device claimed in claim 1, it is characterized in that: described strong (8) are flat key.
3. according to hand wheel antitheft device claimed in claim 1, it is characterized in that: described side screw (4) is sunk screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202965611U CN203308874U (en) | 2013-05-27 | 2013-05-27 | Hand wheel anti-theft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202965611U CN203308874U (en) | 2013-05-27 | 2013-05-27 | Hand wheel anti-theft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308874U true CN203308874U (en) | 2013-11-27 |
Family
ID=49615087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202965611U Expired - Fee Related CN203308874U (en) | 2013-05-27 | 2013-05-27 | Hand wheel anti-theft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308874U (en) |
-
2013
- 2013-05-27 CN CN2013202965611U patent/CN203308874U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20170527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |