CN102322075A - Enhanced reinforced plastic inspection well - Google Patents
Enhanced reinforced plastic inspection well Download PDFInfo
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- CN102322075A CN102322075A CN201110209189A CN201110209189A CN102322075A CN 102322075 A CN102322075 A CN 102322075A CN 201110209189 A CN201110209189 A CN 201110209189A CN 201110209189 A CN201110209189 A CN 201110209189A CN 102322075 A CN102322075 A CN 102322075A
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- well
- reinforcing rib
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- well head
- manhole
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- 238000007689 inspection Methods 0.000 title claims abstract description 20
- 239000002990 reinforced plastic Substances 0.000 title abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 89
- 239000004033 plastic Substances 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 16
- 230000002787 reinforcement Effects 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000005304 joining Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention discloses an enhanced reinforced plastic inspection well comprising a well base, a well head and a branch pipe interface, wherein the well head is in an internal bearing insert connection structure; reinforcing ribs are arranged at the bottom of the well base and on the outer wall of the side of the well base, the reinforcing ribs are arranged vertical to the surface of the outer wall along a well head columnar shaft, and the reinforcing ribs at the bottom are formed by extending the reinforcing ribs on the outer wall of the side of the well base; and one end of each reinforcing rib on the outer wall of the side of the well base is arranged along the circumference of the outer wall of the well head to form a step, and the step is provided with a dismountable load bearing retainer ring. The internal bearing insert connection structure in the invention can adapt to more extensive product sources and realize more stable, firmer and more convenient connection, the reinforcing ribs and the load bearing retainer ring improve strength of inspection well, installation settlement is uniform, the inspection well is difficult to move, connection bearing load transfer stress is uniform, a groove structure reduces cleaning frequency, maintenance cost is saved, corrugate reinforcing ribs of the branch pipe interface enhance stiffness of a well base ring, and load bearing stress strength is improved; and the dismountable load bearing retainer ring structure simplifies inspection well casting equipment, cost is reduced, and structure is further optimized.
Description
Technical field
The invention belongs to plumbing fitting and manufacture and design the field, especially the manufacturing and designing of manhole in the large scale pipeline system, particularly reinforcement plastic inspection well structure design.
Background technology
Manhole in the underground piping system is claimed piping shaft, inspection shaft again.Present large-scale underground pipeline such as sewer, industrial and mineral sewage vent line, underground communication, cable are laid the manhole of pipeline etc.; Especially for the inspection shaft in the sewer pipeline; Major part is that the underground in pipe path has been built a well body to ground with brick or cement; Cover a well lid then above that, have perforate at the well body side surface and be used for the pipeline connection; Its existing problems are long construction periods, be easy to generate the shrub weeds, the mediation the not easy current that make not smooth, cause the secondary pollution of surrounding environment.Prefabricated cement well is also arranged, though it can dwindle the pipeline construction cycle, still there is the problem of above-mentioned others in it.
The use of plastic pipe formula manhole has overcome more above-mentioned problems.Socket joint connected mode outside on the well head connected mode, adopting at present; Said outer socket joint connected mode is meant on the manhole well seat that well head is connected with pit shaft or a mouth of pipe when being connected with arm; Pit shaft and the well head lap of joining is positioned at well head, and arm and arm oral sex are closed lap and be positioned at a mouth of pipe; This connected mode adopts bonding connected mode; This connected mode pit shaft outer wall and well head inwall after connection adopt viscose glue bonding; But vertical pit shaft lower ending opening edge does not have uniform and stable carrying to be supported; Under the long-term pressure of road surface and other heavily loaded power, depend merely on bonding force and can not guarantee the stable and indeformable of manhole and pit shaft, even if pit shaft adopts its distortion of flexible design also to be difficult to avoid.
Existing manhole and each accessory manufacturer of manhole are numerous; Because each manufacturer's adopting process is different with material, each manufacturer produces the stricter design internal diameter size of internal diameter series pipeline, thereby internal diameter is generally identical; But because of material different with technology different product external diameter; When its outer socket joint was connected, pit shaft socket joint point is difficult to arrive force request made unbalance stress, caused the well seat to be made an exception and was out of shape.
The manhole size is generally bigger, and how strengthening the inspection borehole wall is the problem that always need explore, and well seat wall is buried underground; Its peripheral pressurized is bigger, and well seat bottom is placed on installs on the basis, and what banketed in the basis is full of; Tight; No loosened soil, real backfill guarantees that uniform settlement is to guarantee manhole installation quality important techniques index.
In the manhole use, usually there is the use that falling object is piled up has influenced manhole manhole inwall well head and well seat junction, adopt manual method that it is removed at present usually, but the manual method removing are inconvenient, also are not easy to realize cleaning at any time.
Present in addition plastic pipe formula manhole is through fixedly moulding manufacturing; An interface tube of manhole claims that again bell and spigot is connected the fixing pipe-line system construction of accomplishing with arm; Present plastic pipe formula manhole size is bigger, because there is deficiency in the intensity of plastic castings, when usually an appearance interface tube is connected with arm in construction; Prop up interface tube deformation effect construction quality, the resistance to deformation intensity that therefore needs reinforced plastics pipe fitting formula manhole to prop up interface tube.
Summary of the invention
The present invention discloses a kind of reinforced reinforcement plastic inspection well according to the deficiency of prior art.First problem that the present invention will solve provides a kind of manhole structure of interior bayonet joint, and well seat outer wall has reinforcing rib; Second problem that the present invention will solve provides the manhole structure of further reinforcement joint strength; The 3rd problem that the present invention will solve provides a kind of more excellent manhole inwall well head and well seat syndeton to reduce the loaded down with trivial details of labor cleaning's manhole.
The present invention realizes through following technical scheme:
Reinforced reinforcement plastic inspection well comprises well seat, well head and an interface tube, and wherein: said well head is interior socket joint syndeton; In well seat bottom and side outer wall reinforcing rib is arranged, the column that side outer wall reinforcing rib forms along well head is axially perpendicular to outer wall surface and arranges, the bottom outer wall reinforcing rib is prolonged by side outer wall reinforcing rib and forms; One end of well seat side outer wall reinforcing rib forms step along well head outer wall circumferential arrangement, and dismountable carrying back-up ring is arranged on the step.
Further said interface tube external surface has along an interface tube circumferential hoop around the corrugated reinforcing rib of arranging.
Further said manhole inwall well head and well seat junction are the groove transition structures.
Said well seat bottom and side outer wall have the reinforcing rib with axial arranged reinforcing rib arranged crosswise.
Said interface tube external surface has along an axial arranged reinforcing rib of interface tube.
Socket joint syndeton in well head of the present invention adopts; The socket joint syndeton is meant when well head is connected with pit shaft on the manhole well seat in said; Pit shaft and the well head lap of joining is positioned at outer wellhead; Also be that well head and the pit shaft lap of joining is positioned at pit shaft, shaft in wall has viscose glue and well head outer wall bonding.The socket joint syndeton makes full use of the stricter design internal diameter size of each manufacturer's production internal diameter series pipeline at present in adopting; Each internal diameter of the pipeline is identical; When interior bayonet joint, internal diameter series internal diameter of the pipeline is the same, and joint airtight performance easy to connect is good; Structure and stability under loading are difficult for producing distortion or damage.
The present invention has reinforcing rib in well seat bottom and side outer wall, and side outer wall reinforcing rib is axial arranged along the column that well head forms, and every reinforcing rib is perpendicular to the outer wall surface that connects, and the bottom outer wall reinforcing rib is prolonged by side outer wall reinforcing rib and forms.Manhole has different manifold configuration usually, have two interface tubes same be that straight-through manhole well seat, two interface tubes are elbow manhole well seats when axially vertical each other when axial, are threeway manholes when three arms are arranged, or the like.Whatsoever the manhole of manifold configuration all has well head and the well seat that is positioned at the well head bottom, and arm well head operated by rotary motion is at well seat wall; The present invention is provided with reinforcing rib in well seat outer wall surface; Reinforcing rib has been strengthened the intensity of well seat wall, and reinforcing rib arranges that vertically said vertical layout refers to that reinforcing rib is axial arranged along the column that well head forms; Every reinforcing rib is perpendicular to well seat outer wall surface; When manhole well head level was installed, well seat side outer wall reinforcing rib arranged direction was vertical with horizontal plane, and the reinforcing rib that further can also increase non axial layout is to increase the intensity of well seat wall; Well seat bottom outer wall of the present invention has reinforcing rib, and its position prolongs the back distribution by side outer wall reinforcing rib and forms, and makes well seat sidewall and bottom reinforcing rib become integral body, helps whole reinforcement; The reinforcing rib of bottom outer wall had both increased the intensity of well seat bottom, and the reinforcing rib transparent design of well seat bottom outer wall makes well seat bottom backfill more be full of again; Tight, no loosened soil reaches real backfill; Guaranteeing uniform settlement, and can limit manhole mobile more firmly stable after manhole is installed.
One end of well seat of the present invention side outer wall reinforcing rib forms step along well head outer wall circumferential arrangement, and dismountable carrying back-up ring is arranged on the step.It is a circle that the manhole well head is overlooked; It is cylindric that the side has suitable height to form; What cylindric well head bottom connected is the well seat; Reinforcing rib forms parcel at well seat sidewall and bottom outer surface, and an end of each bar reinforcing rib terminates in well head cylindrical outer wall lower end and forms step, planar annular and well head plane parallel that each bar reinforcing rib step is combined into; The carrying back-up ring that the present invention has a dismountable annulus to form, internal radius is identical with the well head external diameter, and annulus is installed on the planar annular that each bar reinforcing rib step is combined into and supported by reinforcing rib.The present invention adopted more general easily in the socket joint syndeton, and socket joint is connected pit shaft lower ending opening edge carry to be supported on and carry on the back-up ring, spigot-and-socket back-up ring socket joint point contact area area is big; Make it stressed evenly; Engage bottom reinforcement distribution design, make the stressed even carrying of its Load Transfer, the manhole structure is more firm, stable; Distortion and damage reduce, and have prolonged application life greatly.
The present invention props up interface tube and further adopts along an interface tube circumferential hoop around the corrugated reinforcing rib of arranging; Ripple reinforcing rib lifting surface area is 2.5 times of planomural bell and spigot, and unit area is stressed less relatively, strengthens well seat ring stiffness greatly; Increase load and receive force intensity; Ripple reinforcing rib crest is a camber line, has changed when load is stressed to receive force direction, makes it decompose stressed even carrying; The present invention also can further increase stiffness at the axial arranged reinforcing rib of an interface tube.
The present invention adopts the groove transition structure at manhole inwall well head and well seat junction; Said groove transition structure is meant at cylindric well head inwall of manhole and well seat inwall junction and adopts concave slope; Be lower than near the well head edge part near the well head central part, generally adopt the arc groove design; Arc groove with certain gradient helps the falling object landing, and arc groove does not have rib, and is unobstructed during the falling object landing, significantly reduced labor cleaning's frequency, alleviated labour intensity, practiced thrift maintenance cost.
In sum, the socket joint syndeton adapted to widely rule of origin and more stablely firmly is connected easily with having realized in the present invention adopted, and reinforcing rib makes the increase of manhole well seat intensity with carrying back-up ring structure; Sedimentation evenly is difficult for moving during installation; It is stressed evenly to connect the carrying Load Transfer, and the groove transition structure has significantly reduced labor cleaning's frequency, has practiced thrift maintenance cost; Prop up the interface tube circumferential hoop and strengthen well seat ring stiffness greatly, increase load and receive force intensity around the corrugated reinforcing rib of arranging; Dismountable carrying back-up ring designs simplification the manhole Casting Equipment, the partition structure is simplified production mould, cost of production significantly reduces, and structure is also further optimized.
Description of drawings
Fig. 1 is that manhole well seat of the present invention has the back-up ring structural representation;
Fig. 2 is that manhole well seat of the present invention does not have the back-up ring structural representation;
Fig. 3 is a manhole back-up ring structural representation of the present invention;
Fig. 4 is Fig. 2 A portion enlarged diagram, promptly props up interface tube corrugated reinforcing rib structure sketch map;
Fig. 5 is the machine-operated sketch map in manhole of the present invention bottom;
Fig. 6 is a threeway manhole structural representation of the present invention.
Among the figure, the 1st, the manhole well head, the 2nd, manhole props up interface tube, and 2a is the corrugated reinforcing rib of arm interface surface; 2b is the groove that the corrugated reinforcing rib of arm interface surface forms, the 3rd, and manhole well seat, the 4th, manhole side outer wall reinforcing rib; The 5th, manhole bottom outer wall reinforcing rib, the 6th, the step that reinforcing rib forms, the 7th, transition groove; The 8th, carry back-up ring, 8a carries the back-up ring outside, and 8b carries the back-up ring inner edge.
The specific embodiment
Below in conjunction with the specific embodiment and accompanying drawing the present invention is further specified; The specific embodiment and accompanying drawing are further specifying the principle of the invention; Do not limit the present invention in any way, or similar techniques identical with the present invention all do not exceed the scope of the present invention's protection.
Present embodiment is the example explanation with straight-through plastic inspection well.
In conjunction with Fig. 1 to Fig. 5, as shown in the figure, Fig. 1 is that manhole well seat of the present invention has the back-up ring structural representation; Fig. 2 is that manhole well seat of the present invention does not have the back-up ring structural representation; Fig. 3 is a manhole back-up ring structural representation of the present invention; Fig. 4 is Fig. 2 A portion enlarged diagram, promptly props up interface tube corrugated reinforcing rib structure sketch map, and Fig. 5 is the machine-operated sketch map in manhole of the present invention bottom.
Reinforced reinforcement plastic inspection well comprises well seat 3, well head 1 and an interface tube 2, and well head 1 is interior socket joint syndeton; The socket joint syndeton is meant on the manhole well seat 3 when well head 1 is connected with pit shaft in said, and pit shaft and well head 1 lap of joining is positioned at outside the well head 1, also is that well head 1 and the pit shaft lap of joining is positioned at pit shaft, and shaft in wall has viscose glue and well head 1 outer wall bonding.The socket joint syndeton makes full use of the stricter design internal diameter size of each manufacturer's production internal diameter series pipeline at present in adopting; Each internal diameter of the pipeline is identical; When interior bayonet joint, internal diameter series internal diameter of the pipeline is the same, and joint airtight performance easy to connect is good; Structure and stability under loading are difficult for producing distortion or damage.
In well seat 3 bottoms and side outer wall reinforcing rib 4,5 is arranged, side outer wall reinforcing rib 4 is axial arranged along the column that well head 1 forms, and bottom outer wall reinforcing rib 5 is prolonged by side outer wall reinforcing rib 4 and forms; Manhole has different manifold configuration usually, have two interface tubes same be that straight-through manhole well seat, two interface tubes are elbow manhole well seats when axially vertical each other when axial, are threeway manholes when three arms are arranged, or the like; Whatsoever the manhole of manifold configuration all has well head and the well seat that is positioned at the well head bottom, and arm well head operated by rotary motion is at well seat wall; This example is straight-through plastic inspection well, and the present invention is provided with reinforcing rib 4,5 in well seat 3 outer wall surface, and reinforcing rib 4,5 has been strengthened the intensity of well seat wall; And reinforcing rib 4 is vertically arranged; Said vertical layout refers to that reinforcing rib 4 is axial arranged along the column that well head 1 forms, and every reinforcing rib 4 is perpendicular to well seat wall, when manhole well head 1 level is installed; Reinforcing rib 4 arranged direction are vertical with horizontal plane, also are that reinforcing rib 4 arranged direction are vertical with the plane that manhole well head 1 forms; Well seat 3 bottom outer wall of the present invention have reinforcing rib 5, and its position prolongs the back distribution by side outer wall reinforcing rib 4 and forms, and makes well seat sidewall and bottom reinforcing rib 4,5 become integral body, helps whole reinforcement; The reinforcing rib 5 of bottom outer wall had both increased the intensity of well seat 3 bottoms; Reinforcing rib 5 transparent design of well seat 3 bottom outer wall make well seat 3 bottom backfill more be full of tight again; No loosened soil; Reach real backfill, guaranteeing uniform settlement, and can limit manhole mobile more firmly stable after manhole is installed; At an interface tube 2 and well seat 3 connecting portions, reinforcing rib 4 one ends are connected with an interface tube 2 surfaces.
One end of well seat side outer wall reinforcing rib 4 forms step 6 along well head outer wall circumferential arrangement, and 6 have dismountable carrying back-up ring 8 on the step.It is a circle that manhole well head 1 is overlooked; It is cylindric that the side has suitable height to form; What cylindric well head 1 bottom connected is well seat 3; Reinforcing rib 4,5 forms parcel at well seat sidewall and bottom outer surface, and an end of each bar reinforcing rib terminates in well head cylindrical outer wall lower end and forms step 6, planar annular and well head plane parallel that each bar reinforcing rib step is combined into; The carrying back-up ring 8 that the present invention has a dismountable annulus to form, internal radius is identical with the well head external diameter, and annulus carries back-up ring 8 and is installed on the planar annular that each bar reinforcing rib step 6 is combined into and receives reinforcing rib 4 supports.The present invention adopted more general easily in the socket joint syndeton, and socket joint is connected pit shaft lower ending opening edge carry to be supported on and carry on the back-up ring 8, spigot-and-socket back-up ring 8 socket joint point contact area areas are big; Make it stressed evenly; Engage bottom reinforcement distribution design, make the stressed even carrying of its Load Transfer, the manhole structure is more firm, stable; Distortion and damage reduce, and have prolonged application life greatly.
Identical with embodiment 1 other structure, difference is further have along an interface tube circumferential hoop around the corrugated reinforcing rib 2a that arranges at interface tube 2 external surface.Ripple reinforcing rib 2a lifting surface area is 2.5 times of planomural bell and spigot, and unit area is stressed less relatively, strengthens well seat ring stiffness greatly; Increase load and receive force intensity; Ripple reinforcing rib 2a crest is a camber line, has changed when load is stressed to receive force direction, makes it decompose stressed even carrying; The present invention also can further increase stiffness at the axial arranged reinforcing rib of an interface tube.
Identical with embodiment 1 or embodiment 2 other structures, difference is to be groove transition structure 7 at manhole inwall well head and well seat junction further.Said groove transition structure 7 is meant at cylindric well head 1 inwall of manhole and well seat 3 inwall junctions and adopts concave slope, is lower than near well head 2 edge parts near well head 1 central part, generally adopts the arc groove design; Arc groove with certain gradient helps the falling object landing, and arc groove does not have rib, and is unobstructed during the falling object landing, significantly reduced labor cleaning's frequency, alleviated labour intensity, practiced thrift maintenance cost.
In conjunction with Fig. 6.
Identical with embodiment 1 or embodiment 2 or embodiment 3 other structures, difference is that manhole is a threeway manhole structure.Same manhole also can be similar structures such as four-way.
Claims (5)
1. reinforced reinforcement plastic inspection well comprises well seat (3), well head (1) and an interface tube (2), it is characterized in that: said well head (1) is interior socket joint syndeton; In well seat (3) bottom and side outer wall reinforcing rib (4,5) is arranged, the column that side outer wall reinforcing rib (4) forms along well head (1) is axially perpendicular to outer wall surface and arranges, bottom outer wall reinforcing rib (5) is prolonged by side outer wall reinforcing rib (4) and forms; One end of well seat side outer wall reinforcing rib (4) forms step (6) along well head outer wall circumferential arrangement, and (6) have dismountable carrying back-up ring (8) on the step.
2. reinforced reinforcement plastic inspection well according to claim 1 is characterized in that: said interface tube (2) external surface has along an interface tube circumferential hoop around the corrugated reinforcing rib of arranging (2a).
3. reinforced reinforcement plastic inspection well according to claim 1 and 2 is characterized in that: said manhole inwall well head and well seat junction are groove transition structure (7).
4. reinforced reinforcement plastic inspection well according to claim 3 is characterized in that: said well seat (3) bottom and side outer wall have the reinforcing rib with axial arranged reinforcing rib arranged crosswise.
5. reinforced reinforcement plastic inspection well according to claim 3 is characterized in that: said interface tube (2) external surface has along an axial arranged reinforcing rib of interface tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110209189 CN102322075B (en) | 2011-07-25 | 2011-07-25 | Enhanced reinforced plastic inspection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110209189 CN102322075B (en) | 2011-07-25 | 2011-07-25 | Enhanced reinforced plastic inspection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102322075A true CN102322075A (en) | 2012-01-18 |
| CN102322075B CN102322075B (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110209189 Active CN102322075B (en) | 2011-07-25 | 2011-07-25 | Enhanced reinforced plastic inspection well |
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| Country | Link |
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| CN (1) | CN102322075B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074932A (en) * | 2013-02-27 | 2013-05-01 | 黄希顺 | Inspection well of injection molding sewage draining pipe |
| CN103882934A (en) * | 2014-03-04 | 2014-06-25 | 上海优井环保科技有限公司 | Well seat of spiral steel belt inspection well |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089139A (en) * | 1976-08-24 | 1978-05-16 | Armco Steel Corporation | Segmented cylindrical reinforced plastic manhole structure |
| CN201358470Y (en) * | 2009-01-06 | 2009-12-09 | 烟台方大滚塑有限公司 | Combined type underground inspection shaft |
| RO123058B1 (en) * | 2008-11-12 | 2010-08-30 | Fluid Group Hagen S.R.L. | Watermeter manhole |
| CN201574404U (en) * | 2009-12-31 | 2010-09-08 | 浙江双环塑胶阀门有限公司 | Combined type inspection well seat |
| CN202157341U (en) * | 2011-07-25 | 2012-03-07 | 四川亚塑新材料有限公司 | Enhanced reinforcing rib plastic inspection well |
-
2011
- 2011-07-25 CN CN 201110209189 patent/CN102322075B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089139A (en) * | 1976-08-24 | 1978-05-16 | Armco Steel Corporation | Segmented cylindrical reinforced plastic manhole structure |
| RO123058B1 (en) * | 2008-11-12 | 2010-08-30 | Fluid Group Hagen S.R.L. | Watermeter manhole |
| CN201358470Y (en) * | 2009-01-06 | 2009-12-09 | 烟台方大滚塑有限公司 | Combined type underground inspection shaft |
| CN201574404U (en) * | 2009-12-31 | 2010-09-08 | 浙江双环塑胶阀门有限公司 | Combined type inspection well seat |
| CN202157341U (en) * | 2011-07-25 | 2012-03-07 | 四川亚塑新材料有限公司 | Enhanced reinforcing rib plastic inspection well |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074932A (en) * | 2013-02-27 | 2013-05-01 | 黄希顺 | Inspection well of injection molding sewage draining pipe |
| CN103074932B (en) * | 2013-02-27 | 2015-01-07 | 黄希顺 | Inspection well of injection molding sewage draining pipe |
| CN103882934A (en) * | 2014-03-04 | 2014-06-25 | 上海优井环保科技有限公司 | Well seat of spiral steel belt inspection well |
| CN103882934B (en) * | 2014-03-04 | 2016-05-04 | 上海道程环保科技有限公司 | The well seat of helical steel band inspection shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102322075B (en) | 2013-08-28 |
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Denomination of invention: Reinforced plastic manhole Effective date of registration: 20201224 Granted publication date: 20130828 Pledgee: Sichuan Pingwu Rural Commercial Bank Co.,Ltd. Pledgor: SICHUAN YASU NEW MATERIAL Co.,Ltd. Registration number: Y2020510000117 |
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Date of cancellation: 20231220 Granted publication date: 20130828 Pledgee: Sichuan Pingwu Rural Commercial Bank Co.,Ltd. Pledgor: SICHUAN YASU NEW MATERIAL Co.,Ltd. Registration number: Y2020510000117 |
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Denomination of invention: Reinforced plastic inspection well Effective date of registration: 20231225 Granted publication date: 20130828 Pledgee: Sichuan Pingwu Rural Commercial Bank Co.,Ltd. Pledgor: SICHUAN YASU NEW MATERIAL Co.,Ltd. Registration number: Y2023980073922 |