CN2208064Y - Self locking manhole cover - Google Patents
Self locking manhole cover Download PDFInfo
- Publication number
- CN2208064Y CN2208064Y CN 94210598 CN94210598U CN2208064Y CN 2208064 Y CN2208064 Y CN 2208064Y CN 94210598 CN94210598 CN 94210598 CN 94210598 U CN94210598 U CN 94210598U CN 2208064 Y CN2208064 Y CN 2208064Y
- Authority
- CN
- China
- Prior art keywords
- cover plate
- angle
- pin
- hole
- utility
- 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 self-locking road cover plate. The utility model designs the side surface of a bottom plate and a cover plate into a mode that the inner and the external combines in a mode of inclination, and the inner inclination side surface is used for forming self-locking to ensure the stability and safety of the cover plate, and when the cover plate is opened, the border plate of the base of the inner inclination side surface is removed; the cover plate can be easily lifted by a pull ring which is connected with a pin key which is inserted into the pin hole which is designed on the cover plate. The utility model is particularly suitable for covering underground pipelines with long-distance arrangement.
Description
The utility model subordinate waterpipe, the road junction capping product technical field of secret tunnel.
Existing road cover plate all is to adopt positive cuboid or the metal casting of round or the shape of precast member.When capping sewer, secret tunnel mouth, no matter be monolithic gland or arrangement gland, stability is not strong with reliability, be easy to generate displacement, can produce when perhaps traffic jams on and beat, very dangerous, and very easily be raised and promptly go out active, may cause security incident again.Recently the cover plate production technology develops to some extent, adopts base and cover plate with bolt access infrastructure mutually, but still has the situation difficult and that easily lose of opening.
The utility model provides a kind of self-locking road cover plate in order to overcome existing covering plate structure technology above shortcomings part just.
The utility model is achieved by the following technical solution
Interior inclined plane is made in the side of much giving in four sides that cover plate is novel, and all the other sides are the flare inclined-plane; The frame of base is the detachable structure, and is introversion formula structure by cover plate introversion face mutually, and the mutually outer face that inclines is the external inclined type structure.Leaning angle and camber angle are to choose two jiaos optimum value between 4 °～12 ° to be all that camber angle can be identical in 6 °, 8 °, 9 °, also can be different.Have the hole that can insert for the pin portion of draw ring on the cover plate, angle of rotation after draw ring pin portion inserts pin-and-hole, cover plate can be raised by draw ring.
Further set forth content of the present utility model below by Figure of description and embodiment:
Fig. 1 is the utility model axle sectional view;
Fig. 2 is draw ring and pin key schematic diagram;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the pin-and-hole sectional view.
Number in the figure is: 1-cover plate, 2-base lateral frame board, 3-draw ring, 4-pin key, 5-pin-and-hole, hole, 6-cave, θ-leaning angle, α-camber angle.
Cover plate (1) adopts the whole pouring of ductile iron to form usually, and its plane processes by planer.The sand mold moulding of pin-and-hole (5) when utilizing pouring accomplished to have at the bottom of the hole hole, a cave (6) to make pin key (4) insert pin-and-hole (5) to rotate a pin hole, precession cave after the angle again, can mention the purpose of cover plate (1) thereby reach by draw ring (3).It is interior inclined plane that four sides of cover plate have one to two adjacent side at least, and remaining side is the flare inclined-plane, and for example present embodiment is that a side is interior inclined plane, and its excess-three side is the flare inclined-plane.
The lateral frame board (2) that forms base combines respectively by four, can discharge, and is similarly the interior tilting of same tilt angle mutually by the lateral frame board of inclined side in the cover plate, and the lateral frame board by cover plate outer incline side also is the flare inclined of same tilt angle mutually.Present embodiment for example, a lateral frame board is interior inclination, three plates are outer incline.Leaning angle θ and camber angle α can choose best selected value and be all 6 °, 8 °, 9 ° between 4 °～12 °.These two angles can be identical, also can be different.Leaning angle and camber angle are with being chosen for 8 ° in the present embodiment.
During installation, the outer inclined plate with base lateral frame board (2) is placed on the concrete pedestal that sets in advance earlier, aims at the side then and puts cover plate (1), and the lateral frame board with interior inclination presses at last, and cover plate is just stuck by lateral frame board, forms self-locking.In the time will opening cover plate, the base lateral frame board (2) on inclined plane in discharging out earlier, the pin key (4) that utilizes draw ring (3) to connect again inserts pin-and-hole (5).Pin-and-hole is an oblong, and the bottom has the circular pocket hole (6) that links to each other with pin-and-hole.Because the head of pin key (4) has a bending section, its bending length just in time conforms to long ellipse, and the pin key shaft is circular, so behind the slotting pin key down, rotate an angle, its head changes the hole, cave over to, utilizes draw ring upwards to carry, and cover plate just can easily be unlocked.
The utility model compared with the prior art, has good stability, reliably, the advantage of safety, antitheft mistake, and for highway, the airport circuit, the length of combustion gas, steam pipeline is apart from capping, advantage of the present utility model is particularly outstanding, also easy access, the deferent of maintenance and replacing capping is must needing of cover plate technical development.
Claims (4)
1, self-locking road cover plate is made up of base, cover plate, is characterized in: it is interior inclination that four sides of cover plate (1) have one to two adjacent side at least, and remaining side is the flare inclined-plane; The lateral frame board (2) that forms base is the detachable structure, and mutually inner inclined plane is introversion formula structure, and mutually outer inclined plane is the external inclined type structure.
2, cover plate according to claim 1, the angle that it is characterized in that leaning angle θ and camber angle α are 4 °～12 °, and the θ angle can be identical with the α angle, also can difference choose.
3, cover plate according to claim 1 is characterized in that, cover plate (1) has the pin-and-hole (5) that can supply draw ring (3) pin key (4) to insert, and the pin-and-hole bottom has hole, a cave.
4, cover plate according to claim 3 is characterized in that the best selected value of leaning angle and camber angle is both 6 °, 8, ° 9 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94210598 CN2208064Y (en) | 1994-05-07 | 1994-05-07 | Self locking manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94210598 CN2208064Y (en) | 1994-05-07 | 1994-05-07 | Self locking manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2208064Y true CN2208064Y (en) | 1995-09-20 |
Family
ID=33827965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94210598 Expired - Fee Related CN2208064Y (en) | 1994-05-07 | 1994-05-07 | Self locking manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2208064Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029493B (en) * | 2006-02-28 | 2011-06-08 | 圣-戈班Pam集团公司 | Frame and corresponding roadway device |
-
1994
- 1994-05-07 CN CN 94210598 patent/CN2208064Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029493B (en) * | 2006-02-28 | 2011-06-08 | 圣-戈班Pam集团公司 | Frame and corresponding roadway device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |