CN114934579B - RPC tunnel clear water ditch cover plate - Google Patents
RPC tunnel clear water ditch cover plate Download PDFInfo
- Publication number
- CN114934579B CN114934579B CN202111416997.5A CN202111416997A CN114934579B CN 114934579 B CN114934579 B CN 114934579B CN 202111416997 A CN202111416997 A CN 202111416997A CN 114934579 B CN114934579 B CN 114934579B
- Authority
- CN
- China
- Prior art keywords
- cover plate
- plate
- ditch
- filtering
- tunnel
- 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.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 238000001914 filtration Methods 0.000 claims description 59
- 230000007306 turnover Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000004574 high-performance concrete Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/27—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
- E03F2005/063—Gully gratings with slidable or rotatable locking elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sewage (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses an RPC tunnel clear water ditch cover plate, which comprises a tunnel ditch cover plate body, a tunnel ditch cover plate top plate, a rotary ditch filter bottom plate, a ditch cover plate anti-collision surrounding edge, a garbage filter overturning bottom plate and a cover plate longitudinal supporting bottom rod, wherein the tunnel ditch cover plate top plate is arranged at the top end of the tunnel ditch cover plate body, the garbage filter overturning bottom plate is arranged at the bottom end of the tunnel ditch cover plate top plate, the rotary ditch filter bottom plate is arranged at the bottom end of the garbage filter overturning bottom plate, the ditch cover plate anti-collision surrounding edge is arranged at the side surface of the tunnel ditch cover plate top plate, and the cover plate longitudinal supporting bottom rod is arranged at the side surface of the bottom end of the rotary ditch filter bottom plate.
Description
Technical Field
The invention relates to the technical field of tunnel ditch drainage equipment, in particular to an RPC tunnel clear water ditch cover plate.
Background
The reactive powder concrete, RPC for short, is a cement-based material with high strength, high durability, high toughness and good volume stability which is developed by adopting conventional cement and other materials in the middle of 90 s after high-strength and high-performance concrete, is high-performance concrete formed by compounding a DSP material and a fiber reinforced material, and is a cover plate cast by the conventional concrete material, the most easily damaged corner edge is the most easily damaged, the conventional ditch cover plate can only realize top filtration, the ditch is easily blocked due to overlarge top holes, and the top ponding is caused due to overlarge top holes, so the problem which is proposed by the prior art is the current urgent problem to be solved.
Disclosure of Invention
The invention aims to provide the RPC novel tunnel clear water ditch cover plate which has a simple structure, is convenient to install, operate and use, is more flexible to use compared with the traditional ditch cover plate, can filter garbage at the upper end of the cover plate, can filter garbage at the bottom of a ditch, can selectively release part of garbage for ensuring the smoothness of the ditch, and effectively solves various common problems of the tunnel ditch.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a clear ditch apron of RPC tunnel includes tunnel ditch apron body, tunnel ditch apron roof, rotatory ditch filters the bottom plate, ditch apron anticollision surrounding edge, rubbish filters upset bottom plate, apron longitudinal support sill bar, tunnel ditch apron body top is provided with tunnel ditch apron roof, tunnel ditch apron roof bottom is provided with rubbish and filters the upset bottom plate, rubbish filters upset bottom plate bottom and is provided with rotatory ditch and filters the bottom plate, tunnel ditch apron roof side is provided with ditch apron anticollision surrounding edge, rotatory ditch filters bottom plate bottom side and is provided with apron longitudinal support sill bar.
Preferably, the two sides of the bottom end of the tunnel ditch cover plate top plate are provided with movable side grooves of the overturning bottom plate, the middle part of the tunnel ditch cover plate top plate is provided with movable grooves of the filtering bottom plate, the inner side of the tunnel ditch cover plate top plate is provided with a ditch cover plate filtering groove hole, and the middle parts of the two ends of the bottom end of the tunnel ditch cover plate top plate are provided with fixed ports of the supporting bottom rod.
Preferably, the top end of the filtering bottom plate of the rotary ditch is provided with a manual rotary end, the bottom end of the manual rotary end is provided with a rotary connecting rod of the filtering bottom plate, the bottom end of the rotary connecting rod of the filtering bottom plate is provided with a square rotary ditch filter screen, and the bottom end of the square rotary ditch filter screen is provided with a rotary fixed end.
Preferably, the ditch cover plate anti-collision surrounding edge outer side is provided with an anti-collision surrounding edge square corner, the ditch cover plate anti-collision surrounding edge inner side is provided with a ditch top plate arc chamfer, and the ditch cover plate anti-collision surrounding edge side is provided with an anti-collision surrounding edge splicing port.
Preferably, the top end of the garbage filtering overturning bottom plate is provided with an overturning bottom plate deflector rod, the bottom end of the overturning bottom plate deflector rod is provided with an overturning bottom plate connecting rod, and the inner side of the overturning bottom plate connecting rod is provided with a filtering overturning baffle plate.
Preferably, the middle part of the bottom end of the cover plate longitudinal support bottom rod is provided with a filter bottom plate rotating bearing, the side surface of the filter bottom plate rotating bearing is provided with a longitudinal triangular support bottom rod, the top end of the longitudinal triangular support bottom rod is provided with a fixed support node, and the bottom end of the longitudinal triangular support bottom rod is provided with a reciprocating telescopic support node.
Compared with the prior art, the invention has the beneficial effects that:
according to the tunnel ditch cover plate top plate, the RPC material is used, so that the overall structural strength is effectively improved, the movable side groove of the overturning bottom plate can be matched with the garbage filtering overturning bottom plate to realize overturning angle adjustment, the movable groove of the filtering bottom plate can be used for conveniently adjusting a manual rotating end, the overall appearance of the device is not greatly changed, the filtering groove hole of the ditch cover plate can be used for conveniently filtering impurities under normal conditions, and the fixed port of the supporting bottom rod can be conveniently matched with the fixed cover plate to longitudinally support the bottom rod.
The rotary ditch filtering bottom plate aims at realizing the purpose of filtering ditch clear water through the clearance between rotary adjustment and the inner wall of a ditch, the manual rotary end head and the rotary connecting rod of the filtering bottom plate can be adjusted under manual rotation of a user, the square rotary ditch filtering screen can realize the filtration of ditch impurities, and the rotary fixed end head can be matched with the cover plate to longitudinally support the bottom rod to realize stress conversion, so that the stress deformation of the whole structure of the equipment is avoided.
The ditch apron anticollision surrounding edge can protect inboard RPC material, avoids its marginal turning to receive the collision damage, and convenient dismouting can be realized to equipment structure simultaneously, and equipment assembly can repetitious usage.
The main aim at of rubbish filtration upset bottom plate filters rubbish on upper portion, because traditional ditch apron hole is mostly fixed knot constructs, but actual operation use manual through upset bottom plate driving lever realization gap adjustment for whole equipment structure can use the more complicated condition, and a line workman can carry out manual adjustment according to actual conditions.
The apron longitudinal support sill bar can bear the undivided atress of rotatory ditch filtering bottom plate bottom, avoids equipment structure atress to warp, and filtering bottom plate swivel bearing can cooperate rotatory ditch filtering bottom plate to realize nimble rotation, and reciprocal flexible support node can bear upper portion atress, better contacts with ditch district bottom, impact stress when can effectively solving rivers great.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of a roof of a tunnel ditch cover plate according to the present invention;
FIG. 3 is a schematic view of a rotary gutter filter base plate according to the present invention;
FIG. 4 is a schematic view of the anti-collision surrounding edge structure of the ditch cover plate of the invention;
FIG. 5 is a schematic view of the structure of the garbage filtering and overturning bottom plate of the invention;
fig. 6 is a schematic view of the structure of the bottom bar of the cover plate.
In the figure: 1. a tunnel ditch cover plate body; 2. a tunnel ditch cover plate top plate; 3. rotating the ditch filtering bottom plate; 4. anti-collision surrounding edges of ditch cover plates; 5. a garbage filtering overturning bottom plate; 6. the cover plate longitudinally supports the bottom rod; 7. turning over the movable side groove of the bottom plate; 8. a movable groove of the filtering bottom plate; 9. a ditch cover plate filtering slot hole; 10. a support bottom bar fixing port; 11. manually rotating the tip; 12. a filter base plate rotating connecting rod; 13. square rotary ditch filter screen; 14. rotating the fixed end; 15. square corners with anti-collision surrounding edges; 16. arc chamfering of the ditch roof; 17. an anti-collision surrounding edge splicing port; 18. turning over a bottom plate deflector rod; 19. turning over the connecting rod of the bottom plate; 20. filtering and overturning the baffle; 21. a filter base plate swivel bearing; 22. a longitudinal triangular support bottom bar; 23. fixing the support node; 24. and the support node stretches and contracts reciprocally.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
As shown in fig. 1, an RPC tunnel clear water ditch cover plate comprises a tunnel ditch cover plate body 1, a tunnel ditch cover plate top plate 2, a rotary ditch filter bottom plate 3, a ditch cover plate anti-collision surrounding edge 4, a garbage filter turnover bottom plate 5, a cover plate longitudinal support bottom rod 6, wherein the tunnel ditch cover plate top plate body 1 is provided with the tunnel ditch cover plate top plate 2, the bottom of the tunnel ditch cover plate top plate 2 is provided with the garbage filter turnover bottom plate 5, the bottom of the garbage filter turnover bottom plate 5 is provided with the rotary ditch filter bottom plate 3, the side surface of the tunnel ditch cover plate top plate 2 is provided with the ditch cover plate anti-collision surrounding edge 4, and the side surface of the bottom end of the rotary ditch filter bottom plate 3 is provided with the cover plate longitudinal support bottom rod 6.
As shown in fig. 2, two sides of the bottom end of the tunnel ditch cover plate top plate 2 are provided with turnover bottom plate movable side grooves 7, the middle part of the tunnel ditch cover plate top plate 2 is provided with a filtering bottom plate movable groove 8, the inner side of the tunnel ditch cover plate top plate 2 is provided with ditch cover plate filtering groove holes 9, and the middle parts of the two ends of the bottom end of the tunnel ditch cover plate top plate 2 are provided with supporting bottom rod fixing ports 10.
As shown in fig. 3, a manual rotary end head 11 is arranged at the top end of the rotary ditch filtering bottom plate 3, a filtering bottom plate rotary connecting rod 12 is arranged at the bottom end of the manual rotary end head 11, a square rotary ditch filter screen 13 is arranged at the bottom end of the filtering bottom plate rotary connecting rod 12, and a rotary fixing end head 14 is arranged at the bottom end of the square rotary ditch filter screen 13.
As shown in fig. 4, the outer side of the ditch cover plate anti-collision surrounding edge 4 is provided with an anti-collision surrounding edge square corner 15, the inner side of the ditch cover plate anti-collision surrounding edge 4 is provided with a ditch top plate arc chamfer 16, and the side edge of the ditch cover plate anti-collision surrounding edge 4 is provided with an anti-collision surrounding edge splicing port 17.
As shown in fig. 5, the top end of the garbage filtering and overturning bottom plate 5 is provided with an overturning bottom plate deflector rod 18, the bottom end of the overturning bottom plate deflector rod 18 is provided with an overturning bottom plate connecting rod 19, and the inner side of the overturning bottom plate connecting rod 19 is provided with a filtering and overturning baffle 20.
As shown in fig. 6, a filtering bottom plate rotating bearing 21 is arranged in the middle of the bottom end of the cover plate longitudinal supporting bottom rod 6, a longitudinal triangular supporting bottom rod 22 is arranged on the side surface of the filtering bottom plate rotating bearing 21, a fixed supporting node 23 is arranged at the top end of the longitudinal triangular supporting bottom rod 22, and a reciprocating telescopic supporting node 24 is arranged at the bottom end of the longitudinal triangular supporting bottom rod 22.
Application method
During installation and use, the ditch cover plate anti-collision surrounding edge 4 is firstly used for fixing the tunnel ditch cover plate top plate 2, the garbage filtering overturning bottom plate 5 and the rotary ditch filtering bottom plate 3 are assembled at one time, the bottom rod 6 is longitudinally supported by the assembling cover plate, a user manually adjusts the garbage filtering overturning bottom plate 5 and the rotary ditch filtering bottom plate 3 to a proper position, the ditch cover plate water passing efficiency is tested, and the tunnel ditch cover plate body 1 is used and completed in a single operation if the detection is qualified.
The above embodiments are only preferred embodiments of the present invention, and are not limiting to the technical solutions of the present invention, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort should be considered as falling within the scope of protection of the patent claims of the present invention.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. An RPC tunnel clear water ditch cover plate, characterized in that: the garbage filtering and overturning device comprises a tunnel ditch cover plate body (1), a tunnel ditch cover plate top plate (2), a rotary ditch filtering bottom plate (3), a ditch cover plate anti-collision surrounding edge (4), a garbage filtering and overturning bottom plate (5) and a cover plate longitudinal supporting bottom rod (6), wherein the tunnel ditch cover plate top plate (2) is arranged at the top end of the tunnel ditch cover plate body (1), the garbage filtering and overturning bottom plate (5) is arranged at the bottom end of the tunnel ditch cover plate top plate (2), the rotary ditch filtering bottom plate (3) is arranged at the bottom end of the garbage filtering and overturning bottom plate (5), the ditch cover plate anti-collision surrounding edge (4) is arranged on the side face of the tunnel ditch cover plate top plate (2), and the cover plate longitudinal supporting bottom rod (6) is arranged on the side face of the bottom end of the rotary ditch filtering bottom plate (3);
the two sides of the bottom end of the tunnel ditch cover plate top plate (2) are provided with turnover bottom plate movable side grooves (7), the middle part of the tunnel ditch cover plate top plate (2) is provided with a filtering bottom plate movable groove (8), the inner side of the tunnel ditch cover plate top plate (2) is provided with ditch cover plate filtering groove holes (9), and the middle parts of the two ends of the bottom end of the tunnel ditch cover plate top plate (2) are provided with supporting bottom rod fixing ports (10);
the rotary ditch filtering bottom plate (3) is provided with a manual rotary end head (11), the bottom end of the manual rotary end head (11) is provided with a filtering bottom plate rotary connecting rod (12), the bottom end of the filtering bottom plate rotary connecting rod (12) is provided with a square rotary ditch filtering screen (13), and the bottom end of the square rotary ditch filtering screen (13) is provided with a rotary fixed end head (14);
the anti-collision surrounding edge of the ditch cover plate (4) is provided with an anti-collision surrounding edge square corner (15), the inner side of the anti-collision surrounding edge of the ditch cover plate (4) is provided with a ditch top plate circular arc chamfer (16), and the side edge of the anti-collision surrounding edge of the ditch cover plate (4) is provided with an anti-collision surrounding edge splicing port (17);
the garbage filtering overturning device is characterized in that an overturning bottom plate deflector rod (18) is arranged at the top end of the garbage filtering overturning bottom plate (5), an overturning bottom plate connecting rod (19) is arranged at the bottom end of the overturning bottom plate deflector rod (18), and a filtering overturning baffle plate (20) is arranged on the inner side of the overturning bottom plate connecting rod (19);
the middle part of the bottom end of the cover plate longitudinal support bottom rod (6) is provided with a filtering bottom plate rotating bearing (21), the side surface of the filtering bottom plate rotating bearing (21) is provided with a longitudinal triangular support bottom rod (22), the top end of the longitudinal triangular support bottom rod (22) is provided with a fixed support node (23), and the bottom end of the longitudinal triangular support bottom rod (22) is provided with a reciprocating telescopic support node (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111416997.5A CN114934579B (en) | 2021-11-26 | 2021-11-26 | RPC tunnel clear water ditch cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111416997.5A CN114934579B (en) | 2021-11-26 | 2021-11-26 | RPC tunnel clear water ditch cover plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114934579A CN114934579A (en) | 2022-08-23 |
| CN114934579B true CN114934579B (en) | 2024-01-26 |
Family
ID=82862387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111416997.5A Active CN114934579B (en) | 2021-11-26 | 2021-11-26 | RPC tunnel clear water ditch cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114934579B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090000259U (en) * | 2007-07-06 | 2009-01-09 | 오동석 | A cover of rainwater receiver |
| CN204370551U (en) * | 2014-12-25 | 2015-06-03 | 湖南明湘科技发展有限公司 | A kind of well ditch cover plate |
| CN204663579U (en) * | 2015-04-28 | 2015-09-23 | 中铁工程设计咨询集团有限公司 | The cover plate of tunnel internal drainage ditch |
| CN208251298U (en) * | 2018-05-31 | 2018-12-18 | 北京惠诚基业工程技术有限责任公司 | A kind of trench cover |
| CN210264812U (en) * | 2019-07-28 | 2020-04-07 | 福建省金盾建设工程有限公司 | Inside water conservancy diversion ditch of tunnel convenient to clearance mediation |
| CN214144029U (en) * | 2020-09-11 | 2021-09-07 | 徐州启峰智能科技有限公司 | Leakage core internal rotation buckling type civil air-defense explosion-proof floor drain |
| CN113431160A (en) * | 2021-05-19 | 2021-09-24 | 涂水妹 | Municipal administration sewer pipe outlet device |
| CN214329209U (en) * | 2020-12-23 | 2021-10-01 | 南通市五洲复合材料有限公司 | Glass fiber reinforced plastic sewer cover convenient to transport |
| CN214363976U (en) * | 2020-12-10 | 2021-10-08 | 南宁师范大学 | Concrete ditch cover plate that permeates water |
| CN214657626U (en) * | 2020-12-28 | 2021-11-09 | 威海天泽建筑材料有限公司 | Waterproof composite well lid |
-
2021
- 2021-11-26 CN CN202111416997.5A patent/CN114934579B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090000259U (en) * | 2007-07-06 | 2009-01-09 | 오동석 | A cover of rainwater receiver |
| CN204370551U (en) * | 2014-12-25 | 2015-06-03 | 湖南明湘科技发展有限公司 | A kind of well ditch cover plate |
| CN204663579U (en) * | 2015-04-28 | 2015-09-23 | 中铁工程设计咨询集团有限公司 | The cover plate of tunnel internal drainage ditch |
| CN208251298U (en) * | 2018-05-31 | 2018-12-18 | 北京惠诚基业工程技术有限责任公司 | A kind of trench cover |
| CN210264812U (en) * | 2019-07-28 | 2020-04-07 | 福建省金盾建设工程有限公司 | Inside water conservancy diversion ditch of tunnel convenient to clearance mediation |
| CN214144029U (en) * | 2020-09-11 | 2021-09-07 | 徐州启峰智能科技有限公司 | Leakage core internal rotation buckling type civil air-defense explosion-proof floor drain |
| CN214363976U (en) * | 2020-12-10 | 2021-10-08 | 南宁师范大学 | Concrete ditch cover plate that permeates water |
| CN214329209U (en) * | 2020-12-23 | 2021-10-01 | 南通市五洲复合材料有限公司 | Glass fiber reinforced plastic sewer cover convenient to transport |
| CN214657626U (en) * | 2020-12-28 | 2021-11-09 | 威海天泽建筑材料有限公司 | Waterproof composite well lid |
| CN113431160A (en) * | 2021-05-19 | 2021-09-24 | 涂水妹 | Municipal administration sewer pipe outlet device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114934579A (en) | 2022-08-23 |
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