CN201428142Y - Manhole cover - Google Patents
Manhole cover Download PDFInfo
- Publication number
- CN201428142Y CN201428142Y CN2009200285528U CN200920028552U CN201428142Y CN 201428142 Y CN201428142 Y CN 201428142Y CN 2009200285528 U CN2009200285528 U CN 2009200285528U CN 200920028552 U CN200920028552 U CN 200920028552U CN 201428142 Y CN201428142 Y CN 201428142Y
- Authority
- CN
- China
- Prior art keywords
- nut
- lid
- cover
- circular
- hole
- 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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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model relates to a manhole cover; the main body is a circular cover; the middle of the cover is provided with a circular through hole; the wall of the through hole is designed as a boss with bigger upper part and smaller lower part; a screw is arranged in the circular hole; a screw cap is supported on the boss; the screw goes through the cover and is connected with a nut; a vertical groove is carved on the edge of the axial outer wall of the nut; a position below the cover which corresponds to the nut is provided with a fixed pin; the fixed pin is connected with an elongated jaw hinge; and the elongated jaw hinge drops in the vertical groove on the nut under the action of gravity. The device has the advantages of relatively simple structure, no too much cost increased, and greatly increased anti-theft performance.
Description
Technical field
The utility model belongs to the municipal engineering product scope, relates in particular to the inspection shaft lid that uses in the city planting ductwork system of a kind of cities and towns.
Background technology
In the prior art, common inspection shaft commonly used is stamped two classes, and a class is that steel concrete is made, and a class is that cast iron is made.
Reinforced concrete soil property inspection shaft lid is bigger with the utility model difference, does not compare.
Castiron inspection shaft lid, its mounting means are that the inspection shaft lid directly one is put and got on the cage on inspection shaft well body top.Because the inspection shaft that this kind mode is settled lid, can easy to do it be moved away, for a long time, some lawless persons under the table work as scrap iron with the inspection shaft lid and sell, the serious consequence of this phenomenon: 1, the urban environment looks are destroyed, caused bad social influence; 2, national wealth suffers a loss; 3, especially serious is as in time settling new inspection shaft lid again, may make the pedestrian fall into inspection shaft accidentally and damage, death by accident, perhaps bring potential safety hazard to vehicle '; 4, settle the employee that new inspection shaft covers to municipal sector to increase workload.
Summary of the invention
In order to overcome the defective of existing cast iron inspection shaft lid, this practicality is newly improved the inspection shaft lid, provides a kind of inspection shaft lid that makes to fixedly connected the inspection shaft lid that can effectively prevent loss with well body or its base.
For achieving the above object, the technical scheme taked of the utility model is as follows:
A kind of inspection shaft lid, its main body is circular lid, it is characterized in that: the middle part of lid has manhole, the wall of through hole is designed to the big and little boss in bottom in top, be equipped with screw rod in the circular hole, spiro rod cap is bearing on the boss, and the screw rod body of rod is connected with nut after passing lid, and nut shaft is carved with vertical groove to the outer wall border; With nut correspondence position design fixing feet is arranged below lid, fixing feet is connected with strip claw hinge, and the strip claw drops under the effect of gravity in the vertical groove on the nut.
The claw body of rod can be designed to the curved shape or circular-arc of tearing open upwards, the stress active position in the time of can reducing the claw support so relatively.
Operating principle:
During installation, lock is in opening, turns screw rod with instrument, because claw places in the groove of nut it can not be rotated, so nut descends, claw is sagging in action of gravity, when claw opens diameter less than the lid diameter, installs.Back backward rotation screw rod is installed, thereby is opened claw, make claw be stuck on the borehole wall or the well lid mount pad on, just passable with locking at last.
This apparatus structure is simple relatively, and cost increases little, but theftproof performance increases greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of inspection shaft lid, its main body is circular lid 3, the middle part of lid 3 has manhole, it is big and the little boss in bottom is equipped with screw rod 5 in the circular hole that the wall of through hole is designed to top, and spiro rod cap is bearing on the boss, the screw rod body of rod is connected with nut 2 after passing lid, and vertical groove is carved with in nut 2 axial outer wall borders; With nut correspondence position design fixing feet 4 is arranged below lid, fixing feet 4 is connected with strip claw 1 hinge, and strip claw 1 drops under the effect of gravity in the vertical groove on the nut.
Claims (1)
1, a kind of inspection shaft lid, its main body is circular lid (3), it is characterized in that: the middle part of lid (3) has manhole, the wall of through hole is designed to the big and little boss in bottom in top, be equipped with screw rod (5) in the circular hole, spiro rod cap is bearing on the boss, and the screw rod body of rod is connected with nut (2) after passing lid, and nut (2) axially is carved with vertical groove in the outer wall border; With nut correspondence position design fixing feet (4) is arranged below lid, fixing feet (4) is connected with strip claw (1) hinge, and strip claw (1) drops under the effect of gravity in the vertical groove on the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200285528U CN201428142Y (en) | 2009-06-24 | 2009-06-24 | Manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200285528U CN201428142Y (en) | 2009-06-24 | 2009-06-24 | Manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201428142Y true CN201428142Y (en) | 2010-03-24 |
Family
ID=42031873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200285528U Expired - Fee Related CN201428142Y (en) | 2009-06-24 | 2009-06-24 | Manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201428142Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518150A (en) * | 2011-12-12 | 2012-06-27 | 陶章菊 | Arched support for inspection well cover |
| CN102561398A (en) * | 2011-12-20 | 2012-07-11 | 陶章菊 | Bracket of inspection well cover |
| CN106400937A (en) * | 2016-10-28 | 2017-02-15 | 中冶建工集团有限公司 | Floor drain protection structure |
-
2009
- 2009-06-24 CN CN2009200285528U patent/CN201428142Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518150A (en) * | 2011-12-12 | 2012-06-27 | 陶章菊 | Arched support for inspection well cover |
| CN102561398A (en) * | 2011-12-20 | 2012-07-11 | 陶章菊 | Bracket of inspection well cover |
| CN106400937A (en) * | 2016-10-28 | 2017-02-15 | 中冶建工集团有限公司 | Floor drain protection structure |
| CN106400937B (en) * | 2016-10-28 | 2019-02-05 | 中冶建工集团有限公司 | Floor drain protects structure |
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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: 20100324 Termination date: 20100624 |