CN109610515A - Fast assembling-disassembling well lid - Google Patents
Fast assembling-disassembling well lid Download PDFInfo
- Publication number
- CN109610515A CN109610515A CN201910102514.0A CN201910102514A CN109610515A CN 109610515 A CN109610515 A CN 109610515A CN 201910102514 A CN201910102514 A CN 201910102514A CN 109610515 A CN109610515 A CN 109610515A
- Authority
- CN
- China
- Prior art keywords
- well lid
- fin
- connector
- pressing part
- manhole
- 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.)
- Granted
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- 238000003825 pressing Methods 0.000 claims abstract description 52
- 239000007787 solid Substances 0.000 claims abstract description 15
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Closures For Containers (AREA)
Abstract
The invention discloses a kind of fast assembling-disassembling well lids, the lock solid structure including well lid, cover seat of manhole and multiple connection well lids and cover seat of manhole；Lock solid structure is with the first through slot and the first fin that are set on well lid, the second through slot being set on cover seat of manhole and the second fin and connector；Connector has the upper pressing part for being placed in the first fin top surface, is placed in the lower pressing part of the second fin bottom surface and connects the interconnecting piece of upper pressing part and lower pressing part；Connector has the first station and second station, first station is that connector is inserted vertically into first passage, second channel, and second station is that connector laterally urges and the upper pressing part of connector is placed in the first fin top surface and lower pressing part is placed in the second fin bottom surface；By above structure, well lid of the present invention not only fast demountable, while lock solid structure intensity between well lid and cover seat of manhole is high, service life is higher, and simple production process, more convenient production.
Description
Technical field
The present invention relates to a kind of well lids, refer in particular to a kind of fast assembling-disassembling well lid.
Background technique
Well lid prevents people or object from falling for covering road or family's middle-deep well.It include well lid and cover seat of manhole, lid
Well seat is fixed on well head by cement slurry, and well lid is fixed on cover seat of manhole by lock solid structure；For well lid and cover seat of manhole two
Person's lock solid structure problem has developed the patent document CN106436769A as disclosed on February 22nd, 2017, is related to a kind of knot
The high well lid of structure intensity；Wherein locked between well lid and cover seat of manhole by drum connector, forms first party on the well lid
The second rectangular through-hole section is formed in shape through-hole section, cover seat of manhole；The first rectangular through-hole section relative on two inner walls respectively at
Type has the first fin with spacing, and it is logical that at least one end of two first fins forms first in the first rectangular through-hole section
Slot, the spacing between two first fins form the first passage being connected to the first through slot；The second rectangular through-hole section pair
Two first fins are answered to form two second fins, at least one end of two second fins is in the second rectangular through-hole section
The second through slot is formed, and the spacing between two second fins forms the second channel being connected to the second through slot；The drum
Connector has the first transverse part being snapped in above the first fin, the second transverse part being snapped in below the second fin and connection
First transverse part and the second transverse part and it is placed in first passage, the first vertical interconnecting piece in second channel；This locking knot
Structure, which facilitates, locks together well lid and cover seat of manhole, however, since the first fin, the second fin are individually between drum connector
Forced contact area it is small, structure is thiner, assembling structure intensity compare it is lower, it is long since well lid is assembled on road
Time rolls vibration by vehicle, and the first fin, the second fin forced vibration are easily broken off damage；And due to well lid and well lid
Seat is to be separately formed two first fins, two second fins in well lid and cover seat of manhole in process of production made of casting, production
Technique is very cumbersome, and production precision also could will be assembled accurately very much；In addition, the first rectangular through-hole section protrudes from well lid bottom surface,
Second rectangular through-hole section is also sunk a deep gouge planted for the first rectangular through-hole section, and the thickness of well lid and cover seat of manhole is not only increased,
It is more, at high cost to produce materials；First rectangular through-hole section, which protrudes from well lid bottom surface, to be inconvenient to stack transport and the easy damage of transportational process
It is bad.
In view of this, the present inventor is not for attaining many missings and not caused by improving in the design of above-mentioned manhole cover structure
Just, deeply conceive, and actively research improvement has a fling at and develops and design this case.
Summary of the invention
The purpose of the present invention is to provide a kind of fast assembling-disassembling well lid, the well lid not only fast demountable, while well lid and
Lock solid structure intensity height between cover seat of manhole, service life are higher, and simple production process, more convenient production.
In order to achieve the above objectives, solution of the invention is:
A kind of fast assembling-disassembling well lid comprising have the locking knot of well lid, cover seat of manhole and multiple connection well lids and cover seat of manhole
Structure；The lock solid structure is with the first through slot and the first fin that are set on well lid, the second through slot being set on cover seat of manhole
With the second fin and connector；The first fin one side is connect with one medial surface of the first through slot, and first fin is corresponding
Another side another medial surface corresponding with the first through slot forms the first passage being inserted vertically into for connector；Second fin
One side is connect with one medial surface of the second through slot, and second fin corresponds to another side another inside corresponding with the second through slot
Face forms the second channel being inserted vertically into for connector；The connector have be placed in the first fin top surface upper pressing part,
It is placed in the lower pressing part of the second fin bottom surface and connects the interconnecting piece of upper pressing part and lower pressing part；The connector has the
One station and second station, first station are that connector is inserted vertically into first passage, second channel, and the second station is
Connector laterally urges and the upper pressing part of the connector is placed in the first fin top surface and lower pressing part is placed in second wing
Piece bottom surface.
The connector is c-type connector.
The angle of the upper pressing part and lower press portion not between the interconnecting piece is less than or equal to 90 °.
The upper pressing part and lower pressing part are forming loudspeaker opening far from interconnecting piece one end.
There is spacing, the connector has the interval being inserted in spacing between first fin and the second fin
Portion.
The connector is E type connector.
First fin top surface is greater than or equal to the thickness of upper pressing part to the distance of well lid top surface.
First fin bottom surface is flushed with well lid bottom surface.
First fin, the second fin are far from well lid center and first passage, second channel are close to well lid center, described
Connector, which moves to second station from the first station, to be laterally urged from well lid center to well lid edge.
First fin, the second fin are close to well lid center and first passage, second channel are far from well lid center, described
Connector, which moves to second station from the first station, to be laterally urged from well lid edge to well lid center.
The well lid is provided with auricle portion, and first through slot takes shape in auricle portion；The cover seat of manhole is provided with for ear
The auricle slot of piece portion holding, second through slot take shape on auricle slot.
The cover seat of manhole is provided with the auricle portion of protrusion cover seat of manhole top surface, and second through slot takes shape in auricle portion；Institute
The bottom surface for stating well lid is provided with auricle slot for the holding of auricle portion, and first through slot takes shape on auricle slot.
First through slot and the second through slot are oval through slot or arc-shaped slot or round through slot.
The cover seat of manhole has the support ring for being inserted in well head inner wall and the support base being supported on Jing Qiang.
Anti-fall impingement baffle is provided in the support ring of the cover seat of manhole.
The support base top surface of the cover seat of manhole is provided with arc groove, is provided with cushion in the arc groove.
Rubber block is plugged in the first passage, second channel.
After adopting the above structure, well lid of the present invention needs first to close well lid lid above cover seat of manhole in assembling, and by the
One through slot and the alignment of the second through slot；Then connector is caught in vertically to first passage, second channel, then laterally urge connector,
The upper pressing part of the connector is placed in the first fin top surface and lower pressing part is placed in the second fin bottom surface；The i.e. described connection
First fin, the fastening of the second fin can be locked together, and then well lid and cover seat of manhole locked together by part；In dismantling,
Connector can be laterally urged to first passage, second channel, the upper pressing part of the connector is not placed in the first fin top surface
It is not placed in the second fin bottom surface with lower pressing part；I.e. described first fin and the second fin are disconnected part locking, can be by well
Lid and cover seat of manhole dismantling are opened；By connector locking the first fin, the second fin, quickly tearing open between well lid and cover seat of manhole is realized
Dress；Well lid and cover seat of manhole of the present invention need to only form a fin in production respectively, need relative to existing well lid and cover seat of manhole
Two fins are formed in production respectively, production technology of the present invention is simpler, is more convenient production；And each fin and connector
Between forced contact area become larger, assembling structure intensity improve, can avoid as far as possible the first fin, the second fin forced vibration hold
The case where easy fracture damages；Keep the lock solid structure intensity between well lid and cover seat of manhole high, service life is higher.
Detailed description of the invention
Fig. 1 is the decomposition diagram of well lid of the present invention；
Fig. 2 is the schematic top plan view of well lid of the present invention；
Fig. 3 is the schematic top plan view of another well lid of the present invention；
Fig. 4 is the decomposition diagram of the another well lid of the present invention；
Fig. 5 is the schematic side view of c-type connector of the present invention；
Fig. 6 is the schematic side view of E type connector of the present invention.
Symbol description
1 cover seat of manhole 2 of well lid
First through slot, 11 first fin 12
Second through slot, 21 second fin 22
3 first passage 13 of connector
Pressing part 31 on second channel 23
Lower 32 interconnecting piece 33 of pressing part
34 auricle portion 14,24 ' of spacer portion
Auricle slot 24,14 ' support rings 25
The anti-fall impingement baffle 4 of support base 26
27 cushion 5 of arc groove.
Specific embodiment
In order to further explain the technical solution of the present invention, being explained in detail below by specific embodiment the present invention
It states.
Fig. 1, Fig. 2 are please referred to, present invention discloses a kind of fast assembling-disassembling well lids comprising have well lid 1, cover seat of manhole 2 and more
The lock solid structure of a connection well lid 1 and cover seat of manhole 2；The lock solid structure has the first through slot 11 for being set on well lid 1 and the
One fin 12, the second through slot 21 being set on cover seat of manhole 2 and the second fin 22 and connector 3；First fin, 12 side
Face is connect with 11 1 medial surface of the first through slot, and the corresponding another side of first fin 12 is corresponding with the first through slot 11 another interior
Side forms the first passage 13 being inserted vertically into for connector 3；21 1 inside of second fin, 22 one side and the second through slot
Face connection, the corresponding another side of second fin 22 another medial surface corresponding with the second through slot 21 form perpendicular for connector 3
The second channel 23 that straight cutting enters；The connector 3 has the upper pressing part 31 for being placed in 12 top surface of the first fin, is placed in second
The lower pressing part 32 of 22 bottom surface of fin and the interconnecting piece 33 for connecting upper pressing part 31 and lower pressing part 32；The connector 3 has
First station and second station, first station are that connector 3 is inserted vertically into first passage 13, second channel 23, described the
Two stations are that connector 3 laterally urges and the upper pressing part 31 of the connector 3 is placed in 12 top surface of the first fin and lower compacting
Portion 32 is placed in 22 bottom surface of the second fin.
Well lid of the present invention needs first to close the lid of well lid 1 above cover seat of manhole 2 in assembling, and by the first through slot 11 and the
The alignment of two through slots 21；Then connector 3 is caught in first passage 13, second channel 23 vertically, then laterally urges connector 3, institute
The upper pressing part 31 for stating connector 3 is placed in 12 top surface of the first fin and lower pressing part 32 is placed in 22 bottom surface of the second fin；I.e.
The connector 3 can lock together the first fin 12, the fastening of the second fin 22, and then well lid 1 and the locking of cover seat of manhole 2 are existed
Together；In dismantling, connector 3, the upper pressing part of the connector 3 can be laterally urged to first passage 13, second channel 23
31 are not placed in 12 top surface of the first fin and lower pressing part 32 is not placed in 22 bottom surface of the second fin；I.e. described first fin, 12 He
Second fin 22 is disconnected the locking of part 3, can open well lid 1 and the dismantling of cover seat of manhole 2；By connector 3 lock the first fin 12,
Second fin 12 realizes the fast assembling-disassembling between well lid 1 and cover seat of manhole 2；Well lid 1 and cover seat of manhole 2 of the present invention are respectively in production
A fin only need to be formed, needs to form two fins in production respectively relative to existing well lid and cover seat of manhole, the present invention is raw
Production. art is simpler, is more convenient production；And the forced contact area between each fin and connector 3 becomes larger, assembling structure
The case where intensity improves, and the first fin 12,22 forced vibration of the second fin can be avoided to be easily broken off damage as far as possible；Make 1 He of well lid
Lock solid structure intensity between cover seat of manhole 2 is high, and service life is higher.
The connector 3 of the invention is c-type connector (referring to Fig. 5)；C-type connector can be by the first fin 12, second
Fin 22 securely locks together.
The angle of the upper pressing part 31 and lower pressing part 32 respectively between the interconnecting piece 33 of the invention be less than or
Equal to 90 °；It may make pressing part 31 and lower pressing part 32 fasten to be placed in 22 bottom surface of 12 top surface of the first fin and the second fin,
Lock solid structure is stronger.
The upper pressing part 31 of the invention and lower pressing part 32 are forming loudspeaker opening far from 33 one end of interconnecting piece；Loudspeaker
When opening moves to second station by the first station for connector 3, pressing part 31 is placed in 12 top surface of the first fin in convenience
It is placed in 22 bottom surface of the second fin with lower pressing part 32, is assembled more smooth.
There is spacing, the connector 3, which has, to be inserted between first fin 12 and the second fin 22 of the invention
Spacer portion 34 in spacing；The spacer portion 34 is inserted in the spacing between the first fin 12 and the second fin 22, can avoid
First fin 12, the second fin 22, upper pressing part 31 and each component of lower pressing part 32 cause mutual generating collision there are gap
And fracture damage, improve the installation fastness between well lid 1 and cover seat of manhole 2；The spacer portion 34 also can be used as buffer structure, can
Disperse 22 stress of the first fin 12 and the second fin, plays buffer protection function.
The connector 3 of the invention is E type connector (referring to Fig. 6).
First fin, 12 top surface of the invention is greater than or equal to the thickness of upper pressing part 31 to the distance of 1 top surface of well lid
Degree；So that upper pressing part 31 is non-bulging on well lid 1, well lid overall structure is more smooth, and vehicle rolls more stable when passing through.
First fin, 12 bottom surface of the invention is flushed with 1 bottom surface of well lid, is guaranteed that the bottom surface of well lid 1 is smooth, is facilitated heap
Folded transport and reduction production cost.
First fin 12 of the invention, the second fin 22 are far from well lid center and first passage 13, second channel 23
Close to well lid center, the connector 3, which moves to second station from the first station, laterally to be pushed away from well lid center to well lid edge
Dynamic (Fig. 3 please be detailed in)；Or first fin 12, the second fin 22 are close to well lid center and first passage 13, second channel
23 move to second station from the first station and laterally push away from well lid edge to well lid center far from well lid center, the connector 3
It is dynamic；The connector 3 is that locking well lid 1 and cover seat of manhole 2 are moved along radial direction, not only acts as locking effect, and can limit
Well lid 1 is rotated relative to cover seat of manhole 2, and well lid 1 is avoided to rotate and influence the locking fastness of the two relative to cover seat of manhole 2.
The well lid 1 of the invention is provided with auricle portion 14, and first through slot 11 takes shape in auricle portion 14；The well
Cage 2 is provided with the auricle slot 24 for 14 holding of auricle portion, and second through slot 21 takes shape on auricle slot 24；Or the well
Cage 2 is provided with the auricle portion 24 ' of protrusion 2 top surface of cover seat of manhole, and second through slot 21 takes shape in auricle portion 24 '；The well
The bottom surface of lid 1 is provided with the auricle slot 14 ' for the 24 ' holding of auricle portion, and first through slot 11, which takes shape on auricle slot 14 ', (asks
It is detailed in Fig. 4)；The auricle portion 14,24 ' and auricle slot 24,14 ' mutual cooperation structures can not only increase well lid 1 and cover seat of manhole 2 it
Between load bearing effect, and can relatively restricted well lid 1 and cover seat of manhole 2 position, can not arbitrarily rotate, not interfere with well lid
Lock solid structure between 1 and cover seat of manhole 2.
First through slot 11 and the second through slot 12 of the invention be oval through slot or arc-shaped slot or round through slot or
Other special-shaped through slots etc.；It, can be according between well lid 1 and cover seat of manhole 2 since the bearing area between well lid 1 and cover seat of manhole 2 is limited
Specific bearing area is arranged the shape of the first through slot 11, the second through slot 12, more compact structure.
The cover seat of manhole 2 of the invention has the support ring 25 for being inserted in well head inner wall and the support base being supported on Jing Qiang
26；Cover seat of manhole 2 may make to firmly install with deep-well and Jing Qiang.
Anti-fall impingement baffle 4 is provided in the support ring 25 of the cover seat of manhole 2 of the invention, the anti-fall impingement baffle 4 can rise
To safety protection function.
26 top surface of support base of the cover seat of manhole 2 of the invention is provided with arc groove 27, is provided in the arc groove 27
Cushion 5；The cushion 5 can be used as the buffer structure of the two between well lid and cover seat of manhole, and vehicle is rolled by playing
Buffering effect.
Rubber block is plugged in the first passage 13 of the invention, second channel 23；The rubber block by first passage 13,
Second channel 23 fills up, and can avoid connector 3 and slides into first passage 13, second channel 23, and be detached from the first fin 12 of buckle,
Second fin 22 causes well lid 1 and cover seat of manhole 2 not to lock securely.
Above-described embodiment and attached drawing and non-limiting product form and style of the invention, any technical field it is common
The appropriate changes or modifications that technical staff does it all should be regarded as not departing from patent category of the invention.
Claims (10)
1. a kind of fast assembling-disassembling well lid, it is characterised in that: include well lid, cover seat of manhole and multiple connection well lids and cover seat of manhole
Lock solid structure；The lock solid structure has the first through slot for being set on well lid and the first fin, be set on cover seat of manhole the
Two through slots and the second fin and connector；The first fin one side is connect with one medial surface of the first through slot, first wing
Piece corresponds to another side another medial surface corresponding with the first through slot and forms the first passage being inserted vertically into for connector；Described
Two fin one sides are connect with one medial surface of the second through slot, and it is corresponding with the second through slot another that second fin corresponds to another side
One medial surface forms the second channel being inserted vertically into for connector；The connector has the upper pressure for being placed in the first fin top surface
Portion processed, the lower pressing part for being placed in the second fin bottom surface and the interconnecting piece for connecting upper pressing part and lower pressing part；The connector
With the first station and second station, first station is that connector is inserted vertically into first passage, second channel, described second
Station is that connector laterally urges and the upper pressing part of the connector is placed in the first fin top surface and lower pressing part is placed in
Second fin bottom surface.
2. fast assembling-disassembling well lid as described in claim 1, it is characterised in that: the connector is c-type connector.
3. fast assembling-disassembling well lid as described in claim 1, it is characterised in that: the upper pressing part and lower press portion not with it is described
Angle between interconnecting piece is less than or equal to 90 °.
4. fast assembling-disassembling well lid as described in claim 1, it is characterised in that: the upper pressing part and lower pressing part are far from connection
Portion one end forms loudspeaker opening.
5. fast assembling-disassembling well lid as described in claim 1, it is characterised in that: between having between first fin and the second fin
Away from the connector has the spacer portion being inserted in spacing.
6. fast assembling-disassembling well lid as claimed in claim 5, it is characterised in that: the connector is E type connector.
7. fast assembling-disassembling well lid as described in claim 1, it is characterised in that: distance of first fin top surface to well lid top surface
More than or equal to the thickness of upper pressing part.
8. fast assembling-disassembling well lid as described in claim 1, it is characterised in that: first fin bottom surface is flushed with well lid bottom surface.
9. fast assembling-disassembling well lid as described in claim 1, it is characterised in that: first fin, the second fin are far from well lid
The heart and first passage, second channel are close to well lid center, it is by well lid that the connector, which moves to second station by the first station,
Center is laterally urged to well lid edge.
10. fast assembling-disassembling well lid as described in claim 1, it is characterised in that: first fin, the second fin are in well lid
The heart and first passage, second channel are far from well lid center, the connector moves to second station by well lid side by the first station
Edge is laterally urged to well lid center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910102514.0A CN109610515B (en) | 2019-02-01 | 2019-02-01 | Quick assembly disassembly well lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910102514.0A CN109610515B (en) | 2019-02-01 | 2019-02-01 | Quick assembly disassembly well lid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109610515A true CN109610515A (en) | 2019-04-12 |
| CN109610515B CN109610515B (en) | 2024-05-17 |
Family
ID=66021843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910102514.0A Active CN109610515B (en) | 2019-02-01 | 2019-02-01 | Quick assembly disassembly well lid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109610515B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB976103A (en) * | 1962-02-15 | 1964-11-25 | Broads Mfg Company Ltd | Improvements in or relating to manhole covers and frames |
| CN2214445Y (en) * | 1995-05-10 | 1995-12-06 | 赵力 | Rod mobile ball type anti-theft drain cover |
| KR100975661B1 (en) * | 2009-10-09 | 2010-08-17 | (주)세원금속 | Manhole cover |
| CN203174635U (en) * | 2013-03-14 | 2013-09-04 | 林大军 | Anti-theft well lid |
| CN106436769A (en) * | 2016-10-28 | 2017-02-22 | 泉州博超实业有限公司 | Manhole cover with high structural strength |
| CN207047900U (en) * | 2017-05-09 | 2018-02-27 | 长兴县李家巷铸造厂 | A kind of steel fibre quick lock in well lid |
| CN209723039U (en) * | 2019-02-01 | 2019-12-03 | 泉州市泉铸科技发展有限公司 | The firm well lid of simple structure |
| CN209723040U (en) * | 2019-02-01 | 2019-12-03 | 泉州市泉铸科技发展有限公司 | Fast assembling-disassembling well lid |
| CN209760305U (en) * | 2019-02-01 | 2019-12-10 | 泉州市泉铸科技发展有限公司 | Well lid with stability |
| CN209798833U (en) * | 2019-02-01 | 2019-12-17 | 泉州市泉铸科技发展有限公司 | Bearing well cover |
-
2019
- 2019-02-01 CN CN201910102514.0A patent/CN109610515B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB976103A (en) * | 1962-02-15 | 1964-11-25 | Broads Mfg Company Ltd | Improvements in or relating to manhole covers and frames |
| CN2214445Y (en) * | 1995-05-10 | 1995-12-06 | 赵力 | Rod mobile ball type anti-theft drain cover |
| KR100975661B1 (en) * | 2009-10-09 | 2010-08-17 | (주)세원금속 | Manhole cover |
| CN203174635U (en) * | 2013-03-14 | 2013-09-04 | 林大军 | Anti-theft well lid |
| CN106436769A (en) * | 2016-10-28 | 2017-02-22 | 泉州博超实业有限公司 | Manhole cover with high structural strength |
| CN207047900U (en) * | 2017-05-09 | 2018-02-27 | 长兴县李家巷铸造厂 | A kind of steel fibre quick lock in well lid |
| CN209723039U (en) * | 2019-02-01 | 2019-12-03 | 泉州市泉铸科技发展有限公司 | The firm well lid of simple structure |
| CN209723040U (en) * | 2019-02-01 | 2019-12-03 | 泉州市泉铸科技发展有限公司 | Fast assembling-disassembling well lid |
| CN209760305U (en) * | 2019-02-01 | 2019-12-10 | 泉州市泉铸科技发展有限公司 | Well lid with stability |
| CN209798833U (en) * | 2019-02-01 | 2019-12-17 | 泉州市泉铸科技发展有限公司 | Bearing well cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109610515B (en) | 2024-05-17 |
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