CN204982955U - Theftproof well lid of nut locking - Google Patents
Theftproof well lid of nut locking Download PDFInfo
- Publication number
- CN204982955U CN204982955U CN201520467627.8U CN201520467627U CN204982955U CN 204982955 U CN204982955 U CN 204982955U CN 201520467627 U CN201520467627 U CN 201520467627U CN 204982955 U CN204982955 U CN 204982955U
- Authority
- CN
- China
- Prior art keywords
- nut
- sheath
- clamp
- packing ring
- cover plate
- 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
Abstract
The utility model discloses a theftproof well lid of nut locking, including apron (1), still including clamping cardboard (2) on the wall of a well, be connected through two nuts fastener (3) between apron (1) and the cardboard (2), nut fastener includes screw rod, packing ring, nut and sheath, screw rod and cardboard fixed connection, the nut is the non -standard nut of polygon, nut and gasket will lap locking on the cardboard in seting up the counter bore on the apron, the sheath through install the periphery of packing ring and by the nut card in the counter bore of apron, the sheath is arranged in preventing that the forceps holder instrument from stretching into the counter bore and dismantling the nut.
Description
Technical field
The present invention relates to a kind of well lid.
Background technology
Well lid is used for the covering of well head, major part well lid does not all have anti theft design, often stolen by people or move, cause potential safety hazard, in order to antitheft, existing method mainly adopts nonmetals or installs theftproof lock additional, adopts nonmetals can only prevent from stealing and selling, can not prevent from moving, still there is potential safety hazard, dress theftproof lock to a certain extent can be antitheft and prevent from moving, but because well lid is mainly in outdoor application, and rolling of vehicle will be born, environment for use is severe, lockset easily damages, and causes difficulty of unblanking, and user can only adopt destructive mode to open well lid.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of pass through nut check, there is the antitheft anti-anti-stealing manhole cover moving function.
Technical scheme of the present invention is: a kind of anti-stealing manhole cover of nut check, comprise cover plate, also comprise the clamp be installed on the borehole wall, be connected by plural nut clamping device between cover plate with clamp, described nut clamping device comprises screw rod, packing ring, nut and sheath, screw rod is fixedly connected with clamp, nut is the non-standard nut of polygon, cover plate is locked on clamp offering in counterbore on the cover board by nuts and washers, described sheath is cup-like structure, the degree of depth of sheath is greater than the thickness of nut, the bottom thickness of sheath is less than the thickness of packing ring, bottom centre offers installing hole, sheath is arranged on the periphery of packing ring by installing hole and is stuck in the counterbore of cover plate by nut, sheath is used for preventing tool for gripping from stretching in counterbore and dismantles nut.
Conveniently process, the non-standard nut of the preferred regular hexagon of described polygonal nut.
The anti-stealing manhole cover of nut check of the present invention is installed on the borehole wall by clamp, by nut clamping device, cover plate is locked on clamp, nut clamping device is designed by off-gauge nut, the dismounting of standard socket wrench can be prevented, the sheath degree of depth is greater than nut thickness, sheath can protect nut, nut is dismantled in the counterbore preventing monkey wrench and clamp from stretching into cover plate, sheath is arranged on the periphery of packing ring, the thickness of the bottom thickness small washer of sheath, guarantee that sheath is not compressed by nut, rotating sheath also cannot loose nut; The present invention is compared with existing anti-stealing manhole cover, owing to have employed nut clamping device locking, locking strength is large, good reliability, not fragile, and the dismounting of standard socket wrench, monkey wrench and tool for gripping can be prevented, can only by the dismounting of special box spanner, effectively can prevent the random dismounting of unauthorized personnel, have and antitheftly anti-move function.
Accompanying drawing explanation
Fig. 1 is the structure chart of the anti-stealing manhole cover embodiment of a kind of nut check of the present invention.
Fig. 2 is the sectional view along A-A line in Fig. 1.
Fig. 3 is the enlarged drawing of n-quadrant in Fig. 2.
In figure, each Reference numeral is: 1, cover plate; 2, clamp; 3, nut clamping device; 4, screw rod; 5, packing ring; 6, nut; 7, sheath.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, but embodiment is not construed as limiting the invention.
Fig. 1 to Fig. 3 shows the anti-stealing manhole cover of a kind of nut check of the present invention, comprise cover plate 1, also comprise the clamp 2 be installed on the borehole wall, be connected by two nut clamping devices 3 between cover plate 1 with clamp 2, described nut clamping device 3 comprises screw rod 4, packing ring 5, nut 6 and sheath 7, screw rod 4 welds with clamp 2, nut 6 is the non-standard nuts of regular hexagon, cover plate 1 is locked on clamp 2 being opened in the counterbore on cover plate 1 by nut 6 and packing ring 5, described sheath 7 is cup-like structure, the degree of depth of sheath 7 is greater than the thickness of nut 6, the bottom thickness of sheath 7 is less than the thickness of packing ring 5, bottom centre offers installing hole, sheath 7 is arranged on the periphery of packing ring 5 by installing hole and is stuck in by nut 6 in the counterbore of cover plate 1, sheath 7 dismantles nut 6 for preventing tool for gripping from stretching in counterbore.
Claims (2)
1. the anti-stealing manhole cover of a nut check, comprise cover plate, it is characterized in that: described anti-stealing manhole cover also comprises the clamp be installed on the borehole wall, be connected by plural nut clamping device between cover plate with clamp, described nut clamping device comprises screw rod, packing ring, nut and sheath, screw rod is fixedly connected with clamp, nut is the non-standard nut of polygon, nuts and washers is offering well lid locking in counterbore on the cover board on clamp, described sheath is cup-like structure, the degree of depth of sheath is greater than the thickness of nut, the bottom thickness of sheath is less than the thickness of packing ring, bottom centre offers installing hole, sheath is arranged on the periphery of packing ring by installing hole and is stuck in the counterbore of cover plate by nut, sheath is used for preventing tool for gripping from stretching in counterbore and dismantles nut.
2. the anti-stealing manhole cover of nut check according to claim 1, is characterized in that: described nut is the non-standard nut of regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520467627.8U CN204982955U (en) | 2015-07-03 | 2015-07-03 | Theftproof well lid of nut locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520467627.8U CN204982955U (en) | 2015-07-03 | 2015-07-03 | Theftproof well lid of nut locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204982955U true CN204982955U (en) | 2016-01-20 |
Family
ID=55117337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520467627.8U Expired - Fee Related CN204982955U (en) | 2015-07-03 | 2015-07-03 | Theftproof well lid of nut locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204982955U (en) |
-
2015
- 2015-07-03 CN CN201520467627.8U patent/CN204982955U/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: 20160120 Termination date: 20160703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |