CN101898740A - Manhole cover opening device - Google Patents
Manhole cover opening device Download PDFInfo
- Publication number
- CN101898740A CN101898740A CN200910099161XA CN200910099161A CN101898740A CN 101898740 A CN101898740 A CN 101898740A CN 200910099161X A CN200910099161X A CN 200910099161XA CN 200910099161 A CN200910099161 A CN 200910099161A CN 101898740 A CN101898740 A CN 101898740A
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- China
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- support
- pull bar
- opening device
- manhole cover
- cover opening
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Abstract
The invention relates to a manhole cover opening device, comprising a support, a supporting leg positioned below the support on the right, a screw at the left end of a support leg and a pull rod positioned at the right end of the support. The invention aims to overcome the existing technical defects. The device can conveniently and rapidly open the cover through the lever principle and is suitable for opening of various manhole covers.
Description
Technical field
The present invention relates to urban operating mechanism manufacturing technology field, relate in particular to a kind of manhole cover opening device that utilizes lever principle.
Background technology
In recent years, along with developing on an unprecedented scale of city-building, the continuous laying of circuits such as telecommunications, electric power, water supply and sewerage pipeline, the use of inspection shaft is more and more.With antitheft, the quality of manufacturing is heavier, installation is tight for firmly for the inspection shaft lid.In use the gap between well and the well lid tends to fill up impurity.When pipeline maintenance or generation unexpected incidents need be opened well lid, often can not open immediately, plan of work can not carry out on time, has had a strong impact on work efficiency.The logical instrument of biography of each big city inspection shaft lid unlatching of China at present has three kinds: cleek, pickax and sledgehammer are commonly called as " three-major-items ".These three-major-items also are to have represented three kinds of methods of opening inspection shaft: first kind is opened with the cleek hook; Second kind of pickax pulled and opened; Preceding two kinds of not all right words are just used the third, directly break well lid with sledgehammer, reach purpose of opening, but the consequence of this method directly has influence on people's productive life.Traditional instrument is opened time-consuming, the effort of well lid, also seriously influence pipeline maintenance and unexpected incidents repairing, therefore need develop a kind of new tool, can have very big Practical significance and economic benefit by unlatching inspection shaft lid quick and portably.
Technology contents
Purpose of the present invention is intended to overcome above-mentioned prior art defective, and a kind of manhole cover opening device is provided, and this device can be applicable to the unlatching of multiple inspection shaft lid with opening method easily and fast by lever principle.
Foregoing invention purpose of the present invention is achieved by following technical solution:
Manhole cover opening device comprises: support, the structures such as pull bar that are positioned at the bottom-right feet of support, are positioned at the screw rod of leg left end and are positioned at the support right-hand member are formed, wherein feet and support fixedly are welded as a whole, screw rod top is that handwheel, bottom are support disk, the pull bar upper position is arranged with fly nut, has circular gasket to be sheathed on the pull bar between fly nut and the support contact surface.
Described pull bar top and support connecting portion are fixed with fly nut and support, but very big gap is left in the junction between connecting rod and the support, and this gap is not more than the diameter of fly nut lower gasket.
The contact surface of described support lower support pin and inspection shaft lid is a circular arc.
More than the effect of two kinds of special structures be when making things convenient for screw spiral lifting support, reduce the frictional area of above two contact surfaces.
The present invention utilizes lever principle to carry out the unlatching operation of inspection shaft lid, the intersection point of feet line of centers and carriage center horizontal line is balance pivot a, the intersection point of pull bar line of centers and carriage center horizontal line is lever stress point b, the intersection point of screw rod line of centers and carriage center horizontal line is lever point of application c, lever point of application c is lever moment L1+L2 to the distance of fulcrum a, lever stress point b is arm of force L2 to the distance of fulcrum a, produce by the handwheel on the free-hand rotary screw and to make the make progress power F1 of lifting of support, because moment L1+L2 and arm of force L2 are on the same straight line, just formed the tensile force f 2 that on the pull bar line of centers, makes progress, analysis by lever principle formula F 1* (L1+L2)=F2*L2 draws, when screw rod makes progress the height of lifting high more the time, the make progress height of lifting of pull bar is also just high more.
Pull bar is a demountable structure, according to the pull bar of the characteristics of different Cover of inspection well holes customization different structure, conveniently uses the present invention to open dissimilar inspection shaft lids.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a structural profile scheme drawing among the present invention.
Among the figure 1, support, 2, screw rod, 3, pull bar, 4, feet, 5, handwheel, 6, support disk, 7, fly nut, 8, ground, 9, the inspection shaft cover bracket, 10, pad.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
Manhole cover opening device comprises: support (1), the pull bar structures such as (3) that is positioned at the bottom-right feet of support (4), is positioned at the screw rod (2) of leg left end and is positioned at the support right-hand member are formed, wherein feet (4) fixedly is welded as a whole with support (1), screw rod top is that handwheel (5), bottom are support disk (6), pull bar (3) upper position is arranged with fly nut (7), has circular gasket (10) to be sheathed on the pull bar (3) between fly nut (7) and support (1) contact surface.
Described pull bar (3) top and support (1) connecting portion are fixed with fly nut (7) and support (1), but very big gap is left in the junction between connecting rod (3) and the support (1), and this gap is not more than the diameter of fly nut (7) lower gasket (10).
Described support (1) lower support pin (4) is a circular arc with the contact surface of inspection shaft lid (9).
More than the effect of two kinds of special structures be to make things convenient for screw rod (2) spiral lifting support
(1) time, reduces the frictional area of above two contact surfaces.
The present invention utilizes lever principle to carry out the unlatching operation of inspection shaft lid, the intersection point of feet (4) line of centers and support (1) center horizontal line is balance pivot a, the intersection point of pull bar (3) line of centers and support (1) center horizontal line is lever stress point b, the intersection point of screw rod (2) line of centers and support (1) center horizontal line is lever point of application c, lever point of application c is lever moment L1+L2 to the distance of fulcrum a, lever stress point b is arm of force L2 to the distance of fulcrum a, make the upwards power F1 of lifting of support (1) by the generation of the handwheel on the free-hand rotary screw, because moment L1+L2 and arm of force L2 are on the same straight line, just formed the tensile force f 2 that on pull bar (3) line of centers, makes progress, analysis by lever principle formula F 1* (L1+L2)=F2*L2 draws, when screw rod (2) when upwards the height of lifting is high more, pull bar (3) the upwards height of lifting is also just high more.
Pull bar is a demountable structure, according to the pull bar of the characteristics of different Cover of inspection well holes customization different structure, conveniently uses the present invention to open dissimilar inspection shaft lids.
Claims (3)
1. manhole cover opening device comprises: support (1), be positioned at the bottom-right feet of support (4), be positioned at the screw rod (2) of leg left end and be positioned at support and have the pull bar of end structures such as (3) to form, wherein feet (4) is welded as a whole together surely with support (1), screw rod top is that handwheel (5), bottom are support disk (6), pull bar (3) upper position is arranged with fly nut (7), has circular gasket (10) to be sheathed on the pull bar (3) between fly nut (7) and support (1) contact surface.
2. according to claims 1 described manhole cover opening device, it is characterized in that, described pull bar (3) top and support (1) connecting portion are fixed with fly nut (7) and support (1), but very big gap is left in the junction between connecting rod (3) and the support (1), and this gap is not more than the diameter of fly nut (7) lower gasket (10).
3. according to claims 1 described manhole cover opening device, it is characterized in that described support (1) lower support pin (4) is a circular arc with the contact surface of inspection shaft lid (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910099161XA CN101898740A (en) | 2009-06-01 | 2009-06-01 | Manhole cover opening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910099161XA CN101898740A (en) | 2009-06-01 | 2009-06-01 | Manhole cover opening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101898740A true CN101898740A (en) | 2010-12-01 |
Family
ID=43224730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910099161XA Pending CN101898740A (en) | 2009-06-01 | 2009-06-01 | Manhole cover opening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101898740A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776099A (en) * | 2016-04-30 | 2016-07-20 | 山东天元信息技术股份有限公司 | Opening device and method for well lid |
| CN106351262A (en) * | 2016-10-13 | 2017-01-25 | 庄乾晗 | Anti-theft municipal well cover detachment structure |
| CN106368242A (en) * | 2016-10-13 | 2017-02-01 | 庄乾晗 | Improved manhole cover structure easy to disassemble |
| CN108264002A (en) * | 2017-12-04 | 2018-07-10 | 共同科技开发有限公司 | A kind of municipal road construction plays lid arrangement automatically with inspection well cover |
| CN110054129A (en) * | 2019-04-15 | 2019-07-26 | 杜怡清 | A kind of well lid lifting machine |
| KR102037973B1 (en) * | 2019-04-25 | 2019-10-29 | 조흥진 | Separating apparatus for manhole cover |
| KR20230000119U (en) * | 2021-07-06 | 2023-01-13 | 주식회사 엠디코리아 | Manhole cover opener |
| KR20230000124U (en) * | 2021-07-07 | 2023-01-16 | 주식회사 엠디코리아 | Magnetic lifter with fixed pin |
-
2009
- 2009-06-01 CN CN200910099161XA patent/CN101898740A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776099A (en) * | 2016-04-30 | 2016-07-20 | 山东天元信息技术股份有限公司 | Opening device and method for well lid |
| CN106351262A (en) * | 2016-10-13 | 2017-01-25 | 庄乾晗 | Anti-theft municipal well cover detachment structure |
| CN106368242A (en) * | 2016-10-13 | 2017-02-01 | 庄乾晗 | Improved manhole cover structure easy to disassemble |
| CN106351262B (en) * | 2016-10-13 | 2018-05-04 | 台州鼎拓工业设计有限公司 | A kind of antitheft municipal well lid detaching structure |
| CN106368242B (en) * | 2016-10-13 | 2018-05-08 | 台州鼎拓工业设计有限公司 | A kind of modified municipal administration well lid detachable structure |
| CN108264002B (en) * | 2017-12-04 | 2019-04-26 | 大学士工程管理有限公司 | A kind of municipal road construction plays lid arrangement with inspection well cover automatically |
| CN108264002A (en) * | 2017-12-04 | 2018-07-10 | 共同科技开发有限公司 | A kind of municipal road construction plays lid arrangement automatically with inspection well cover |
| CN110054129A (en) * | 2019-04-15 | 2019-07-26 | 杜怡清 | A kind of well lid lifting machine |
| KR102037973B1 (en) * | 2019-04-25 | 2019-10-29 | 조흥진 | Separating apparatus for manhole cover |
| KR20230000119U (en) * | 2021-07-06 | 2023-01-13 | 주식회사 엠디코리아 | Manhole cover opener |
| KR200496777Y1 (en) | 2021-07-06 | 2023-04-21 | 주식회사 엠디코리아 | Manhole cover opener |
| KR20230000124U (en) * | 2021-07-07 | 2023-01-16 | 주식회사 엠디코리아 | Magnetic lifter with fixed pin |
| KR200496819Y1 (en) * | 2021-07-07 | 2023-05-03 | 주식회사 엠디코리아 | Magnetic lifter with fixed pin |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101201 |