CN111535423A - Safe ecological ditch - Google Patents
Safe ecological ditch Download PDFInfo
- Publication number
- CN111535423A CN111535423A CN202010382255.4A CN202010382255A CN111535423A CN 111535423 A CN111535423 A CN 111535423A CN 202010382255 A CN202010382255 A CN 202010382255A CN 111535423 A CN111535423 A CN 111535423A
- Authority
- CN
- China
- Prior art keywords
- floating plate
- filling layer
- water
- side plates
- ditch
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 238000007789 sealing Methods 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 239000013049 sediment Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a safe ecological ditch, which comprises a ditch arranged side by side with a road surface, wherein the ditch comprises a channel arranged on the road surface, two sides of the channel are respectively provided with a side plate, a concrete layer is poured at the bottom of the channel, two sides of the concrete layer are respectively butted with the side plates, a floating plate is arranged between the two side plates, an elastic supporting member is arranged between the bottom of the floating plate and the concrete layer, and the floating plate is jacked up through the elastic supporting member to enable the floating plate to be flush with the upper end surfaces of the two side plates when the ditch is not used. The ditch of the invention is an open ditch, but does not occupy land space, does not accumulate silt at the bottom of the ditch, does not have safety problem, and is safer to use when in discharge.
Description
Technical Field
The invention relates to the field of hydraulic engineering, in particular to a safe ecological ditch.
Background
At present, channels for water drainage are divided into an underdrain and an open channel, which have advantages respectively and are used in different occasions according to requirements. The open channel is mainly used for drainage irrigation or drainage, and although the open channel can be cleaned conveniently, the open channel has many problems in use, for example, the open channel is opened at the top, water flow is rapid in discharge, and the position where the open channel is arranged is possibly a living area, so that children or some old people easily fall off carelessly and are washed away, and potential safety hazards exist. Furthermore, the open channel is left open for a long time when not in use, which not only makes the space unusable, but also the recessed structure makes it a dangerous point.
In addition, after the open channel discharges water frequently, the water at the bottom cannot be discharged completely, so that a large amount of sludge is accumulated at the bottom of the channel frequently, the sludge needs to be cleaned frequently, otherwise, the channel space is reduced due to the sludge, the discharge flow is influenced, weeds grow in the sludge when the channel is not used, the normal use of the channel is influenced, and the channel is cleaned frequently, so that manpower and material resources are consumed.
Disclosure of Invention
The invention aims to provide a safe ecological ditch, which not only has good safety when in use, but also has good safety when not in use, does not waste the area of the area, can be used as a road on the normal ground, does not need to be cleaned manually, can effectively prevent silt from accumulating at the bottom and has longer service life.
The invention is realized by the following technical scheme: a safe ecological ditch comprises a ditch arranged side by side with a road surface, the ditch comprises a channel arranged on the road surface, two sides of the channel are respectively provided with a side plate, a concrete layer is poured at the bottom of the channel, two sides of the concrete layer are respectively butted with the side plates, a floating plate is arranged between the two side plates, an elastic supporting member is arranged between the bottom of the floating plate and the concrete layer, the floating plate is jacked up by the elastic supporting member and enables the floating plate to be flush with the upper end surfaces of the two side plates when the ditch is not used, a hollow cavity is arranged inside the floating plate, a filling layer is filled in the hollow cavity, a sealed water inlet cavity is arranged in the filling layer, one side of the filling layer, which is close to a water source end, is connected with more than one water inlet pipe, more than one water outlet pipe is arranged at the top of one side of the floating plate, when the water inlet cavity in the filling layer is filled, at this time, a discharge passage is formed at the upper end of the floating plate; when the upper end face of the floating plate is flush with the upper end faces of the two side plates, the positioning structures on the side plates position the floating plate, the positions, close to the top, of the side plates are provided with sealing ejection mechanisms, and after the discharge channel is formed, the top opening face of the discharge channel is sealed by the sealing ejection mechanisms.
According to the preferable technical scheme, the positioning structure comprises concave holes formed in the side plates, springs are fixedly arranged in the concave holes, positioning pins are arranged at the outer side ends of the springs and are ejected to the outside through the springs, pin holes are formed in the floating plate and face the positioning pins, the positioning pins are partially inserted into the pin holes, ejector rods are arranged at positions, facing the pin holes, on the filling layer, and the ejector rods are partially arranged in the pin holes and are in contact with the positioning pins.
As the preferred technical scheme, the filling layer is made of elastic rubber materials, a clearance cavity is formed between the two sides of the filling layer and the inner wall of the hollow cavity, after the filling layer is filled with water and expands, the expanded filling layer ejects the ejector rod, the ejector rod ejects the positioning pin, and the water inlet pipe is connected to the filling layer.
As a preferred technical scheme, the lower end face of the positioning pin is an inclined guide face, and the upper end face of the positioning pin is a horizontal plane.
As a preferred technical scheme, at least one water leakage pipe is arranged on the filling layer, penetrates through the floating plate and extends out of the outer side surface of the lower end of the floating plate, and is used for leaking water in the filling layer.
As the preferred technical scheme, all install the relief valve on the drain pipe, after filling the water full in the filling layer, the water that is poured into by the water pump is discharged to the upper end of floating plate through the drain pipe.
Preferably, the opposite surfaces of the side plates are provided with supporting steps, and the supporting steps are arranged at positions close to the concrete layer and used for supporting the lowered floating plates.
As the preferred technical scheme, the elastic supporting piece is made of elastic rubber materials with deformation recovery capacity, and the elastic supporting piece is connected and communicated with the sealing ejection mechanism through a guide pipe.
As the optimized technical scheme, the sealing ejection mechanism comprises a containing box arranged on the outer side face of the side plate, an elastic rubber air bag is arranged in the containing box, the elastic rubber air bag is compressed in the containing box when no air exists in the elastic rubber air bag, the elastic rubber air bag occupies a half of the space in the containing box at the moment, when the elastic supporting piece is extruded, the air in the elastic supporting piece is extruded through a guide pipe and enters the elastic rubber air bag, the elastic rubber air bag expands and is ejected out of the containing box, and the two ejected elastic rubber air bags are butted and then seal the upper end face of the discharge channel.
The floating plate is a metal plate, two side faces of the metal plate are respectively provided with a silica gel sealing layer, the floating plate is in sealing contact with the side plate through the silica gel sealing layers, and the weight of the floating plate after the filling layer is filled with water is larger than the sum of the elastic supporting force of the elastic supporting piece and the friction force between the two side faces of the floating plate and the side plate.
The invention has the beneficial effects that: when the channel is not used, the floating plate is used for hiding the discharge cavity, so that the floating plate is flush with road surfaces on two sides, and the channel can be normally used and normally passes through the area;
secondly, the floating plate is flush with the road, so that the floating plate cannot fall into the channel, and the use is safer;
when the discharge channel is discharged, the floating plate descends, the sealing ejection mechanism ejects out the seal, and because the opening at the top of the discharge channel is sealed, children can be effectively prevented from falling into the discharge channel, the warning safety is improved, and meanwhile, external sundries can be prevented from entering the discharge channel;
and fourthly, the sediments accumulated on the floating plate can be automatically dried after the floating plate recovers deformation, and can be taken away with pedestrians and vehicles, so that the sediments are effectively prevented from being accumulated on the bottom surface of the channel, and manual cleaning operation is not needed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a top view of the present invention
FIG. 2 is a top view of the present invention in the discharge state;
FIG. 3 is a schematic cross-sectional view of FIG. 1 of the present invention;
FIG. 4 is a cross-sectional schematic view of FIG. 2 of the present invention;
fig. 5 is a partially enlarged view of a portion a in fig. 3.
Detailed Description
As shown in fig. 1 and fig. 3, the safe ecological ditch comprises a ditch arranged side by side with a road surface 4, the ditch comprises a channel 14 arranged on the road surface 4, two sides of the channel 14 are respectively provided with a side plate 6, a concrete layer 11 is poured at the bottom of the channel 6, two sides of the concrete layer 11 are respectively butted with the side plates 6, a floating plate 1 is arranged between the two side plates 6, an elastic support member 12 is arranged between the bottom of the floating plate 1 and the concrete layer 11, the floating plate 1 is jacked up through the elastic support member 12 and enables the ditch to be flush with the upper end surfaces of the two side plates 6 when not in use, a hollow cavity is arranged inside the floating plate 1, a filling layer 7 is arranged in the hollow cavity, a sealed water inlet cavity 71 is arranged in the filling layer 7, one side of the filling layer 7 close to the water source end is connected into more than one water inlet pipe 2, the top of the floating, when the water inlet cavity in the filling layer 7 is filled with water, the excessive water is discharged from the water discharge pipe 3, the floating plate 1 extrudes the elastic support 12 under the gravity of the water and descends, and a discharge channel 20 is formed at the upper end of the floating plate 1; when the upper end face of the floating plate 1 is flush with the upper end faces of the two side plates 6, the positioning structures 16 on the side plates 6 position the floating plate 1, the positions, close to the top, of the side plates 6 are provided with sealing ejection mechanisms, and after the discharge channel 20 is formed, the top opening face of the discharge channel 20 is sealed by the sealing ejection mechanisms.
As shown in fig. 5, the positioning structure includes recessed holes formed in the side plates, a spring 162 is fixedly installed in each recessed hole, a positioning pin 161 is installed in each outer end of each spring 162, the positioning pins 161 are ejected to the outside through the springs 162, pin holes are formed in the floating plate 1 and face the positioning pins, the positioning pins are partially inserted into the pin holes, ejector rods 72 are arranged in the filling layer 7 and face the pin holes, and the ejector rods 72 are partially installed in the pin holes and contact with the positioning pins 161.
Wherein, the filling layer 7 is made of elastic rubber material, a clearance cavity 73 is formed between the two sides of the filling layer and the inner wall of the hollow cavity, after the filling layer 7 is filled with water and expands, the ejector rod 72 is ejected by the expanded filling layer 7, the ejector rod 72 is used for ejecting the positioning pin, the water inlet pipe 2 is connected to the filling layer 7, the filling layer is used for ejecting the ejector rod by using the injected water, and then the positioning pin is extruded, so that the floating plate can lose the limiting support of the positioning structure, the floating plate 1 can descend under the action of gravity, and the elastic supporting piece 12 is extruded.
In addition, the positioning structure can be cancelled in the embodiment, and the floating plate can also be supported manually, namely more than one supporting rod is hinged to the bottom of the floating rod through a hinge.
The lower end surface of the positioning pin 161 is an inclined guide surface, the upper end surface of the positioning pin 161 is a horizontal surface, and after the floating plate 1 is jacked up and reset by the elastic support 12, the inclined guide surface of the positioning pin is pressed, so that the positioning pin is reinserted into the pin hole.
In this embodiment, the filling layer 7 is provided with at least one water leaking pipe (not shown) which passes through the floating plate and extends out of the outer side surface of the lower end of the floating plate to leak water in the filling layer 7, and after the water in the filling layer leaks out, the filling layer is lightened and is jacked up again by the elastic support member.
Wherein, all install the relief valve on the drain pipe 3, after filling full water in the filling layer 7, the water that pours into by the water pump passes through the upper end of drain pipe discharge to floating plate 1, owing to set up the relief valve, consequently when the water pump is opened when drawing water, water can pour into the filling layer earlier, can directly not discharge from the drain pipe, and its purpose makes the filling layer inflation and fills up and be full of, pushes down elastic support element 12 after the increase weight. When the interior of the floating plate is filled with water, the re-injected water can conduct the pressure relief valve and is continuously discharged from the top of the floating plate through the water discharge pipe, and after the floating plate descends, a discharge channel is formed, so that the water can be discharged by the discharge channel, as shown in fig. 4.
In this embodiment, the opposite surfaces of the side plates 6 are provided with supporting steps 61, and the supporting steps 61 are disposed at positions close to the concrete layer and used for supporting the lowered floating plate 1.
Wherein, elastic support 12 adopts an elastic rubber material that has deformation recovery ability, connect and switch on through a pipe 9 between elastic support 12 and the sealed ejection mechanism, sealed ejection mechanism includes one and sets up the box 15 that holds on the curb plate lateral surface, it is provided with an elastic rubber gasbag 5 in the box 15 to hold, the inside no gas of elastic rubber gasbag 5 is compressed in holding the box 15, the elastic rubber gasbag 5 occupies the inside half space of holding the box this moment, when extrusion elastic support, the gas in the elastic support 12 extrudes through pipe 9 and enters into the elastic rubber gasbag in, the elastic rubber gasbag expands and is ejected outside holding the box, two ejecting elastic rubber gasbags dock the sealed discharge channel up end of back, as shown in fig. 2 and 4.
The elastic rubber air bag 5 needs to have certain top supporting force, enough buoyancy force is needed when injected air is in contact with water, the situation that children step on the elastic rubber air bag carelessly and fall into a discharge channel is prevented, enough supporting force is needed, warning icons or characters need to be drawn on the top of the elastic rubber air bag, and pedestrians cannot be informed of the contact.
The floating plate 1 is a metal plate, two side faces of the metal plate are respectively provided with a silica gel sealing layer, the floating plate 1 is in sealing contact with the side plates through the silica gel sealing layers, the weight of the floating plate after the filling layer 7 is filled with water is greater than the sum of the elastic supporting force of the elastic supporting piece and the friction force of the two side faces of the floating plate and the side plates, the floating plate has enough weight to press down the elastic supporting piece after being filled with water, when the floating plate is positioned through the positioning structure, the upper end face of the floating plate is flush with a road surface, the space can be normally utilized at the moment, the sunken space is not available, a normal area is formed, the waste of the space is reduced, and the safety of the open channel when the.
The invention has the beneficial effects that: when the channel is not used, the floating plate is used for hiding the discharge cavity, so that the floating plate is flush with road surfaces on two sides, and the channel can be normally used and normally passes through the area;
secondly, the floating plate is flush with the road, so that the floating plate cannot fall into the channel, and the use is safer;
when the discharge channel is discharged, the floating plate descends, the sealing ejection mechanism ejects out the seal, and because the opening at the top of the discharge channel is sealed, children can be effectively prevented from falling into the discharge channel, the warning safety is improved, and meanwhile, external sundries can be prevented from entering the discharge channel;
and fourthly, the sediments accumulated on the floating plate can be automatically dried after the floating plate recovers deformation, and can be taken away with pedestrians and vehicles, so that the sediments are effectively prevented from being accumulated on the bottom surface of the channel, and manual cleaning operation is not needed.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. A safe ecological ditch is characterized in that: comprises a ditch arranged side by side with a road surface, the ditch comprises a channel arranged on the road surface, two sides of the channel are respectively provided with a side plate, the bottom of the channel is poured with a concrete layer, two sides of the concrete layer are respectively butted with the side plates, a floating plate is arranged between the two side plates, an elastic supporting member is arranged between the bottom of the floating plate and the concrete layer, the floating plate is jacked up by the elastic supporting member and enables the ditch to be flush with the upper end surfaces of the two side plates when the ditch is not used, a hollow cavity is arranged inside the floating plate, a filling layer is filled in the hollow cavity, a sealed water inlet cavity is arranged in the filling layer, more than one water inlet pipe is connected to one side of the filling layer close to a water source end, more than one water drain pipe is arranged at the top of one side of the floating plate close to the water source, when the water inlet cavity inside the filling layer, at this time, a discharge passage is formed at the upper end of the floating plate; when the upper end face of the floating plate is flush with the upper end faces of the two side plates, the positioning structures on the side plates position the floating plate, the positions, close to the top, of the side plates are provided with sealing ejection mechanisms, and after the discharge channel is formed, the top opening face of the discharge channel is sealed by the sealing ejection mechanisms.
2. The eco-safe trench according to claim 1, wherein: the positioning structure comprises concave holes formed in the side plates, springs are fixedly arranged in the concave holes, positioning pins are arranged at the outer side ends of the springs and are ejected to the outside through the springs, pin holes are formed in the floating plate and face the positioning pins, the positioning pins are partially inserted into the pin holes, ejector rods are arranged at positions, facing the pin holes, of the filling layer, and the ejector rods are partially arranged in the pin holes and are in contact with the positioning pins.
3. The eco-safe trench according to claim 2, wherein: the filling layer is made of elastic rubber materials, a clearance cavity is formed between the two sides of the filling layer and the inner wall of the hollow cavity, when the filling layer is filled with water and expands, the expanded filling layer ejects the ejector rod, the ejector rod ejects the positioning pin, and the water inlet pipe is connected to the filling layer.
4. The eco-safe trench according to claim 2, wherein: the lower end face of the positioning pin is an inclined guide face, and the upper end face of the positioning pin is a horizontal plane.
5. The eco-safe trench according to claim 1, wherein: the filling layer is provided with at least one water leaking pipe which penetrates through the floating plate and extends out of the outer side surface of the lower end of the floating plate for leaking water in the filling layer.
6. The eco-safe trench according to claim 1, wherein: the drain pipes are all provided with pressure relief valves, and after the filling layer is filled with water, the water injected by the water pump is discharged to the upper end of the floating plate through the drain pipes.
7. The eco-safe trench according to claim 1, wherein: the opposite surfaces of the side plates are provided with supporting steps, and the supporting steps are arranged at positions close to the concrete layer and used for supporting the descending floating plate.
8. The eco-safe trench according to claim 1, wherein: the elastic supporting piece is made of elastic rubber material with deformation recovery capability, and the elastic supporting piece is connected and communicated with the sealing ejection mechanism through a guide pipe.
9. The ecological safety trench according to claim 1 or 8, wherein: sealed ejection mechanism includes that one sets up the box that holds on the curb plate lateral surface, holds and is provided with an elasticity rubber gasbag in the box, is compressed in holding the box when elasticity rubber gasbag is inside gasless, and elasticity rubber gasbag occupies the space that holds the inside half of box this moment, and when extrusion elasticity support piece, the gas in the elasticity support piece extrudees through the pipe and enters into elasticity rubber gasbag in, and elasticity rubber gasbag inflation is ejecting in holding the box outside, and two ejecting elasticity rubber gasbags seal the discharge passageway up end after the butt joint.
10. The eco-safe trench according to claim 1, wherein: the floating plate is a metal plate, two side faces of the metal plate are respectively provided with a silica gel sealing layer, the floating plate is in sealing contact with the side plates through the silica gel sealing layers, and the weight of the floating plate after the filling layer is filled with water is larger than the sum of the elastic supporting force of the elastic supporting piece and the friction force between the two side faces of the floating plate and the side plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382255.4A CN111535423B (en) | 2020-05-08 | 2020-05-08 | Safe ecological ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382255.4A CN111535423B (en) | 2020-05-08 | 2020-05-08 | Safe ecological ditch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111535423A true CN111535423A (en) | 2020-08-14 |
| CN111535423B CN111535423B (en) | 2021-07-23 |
Family
ID=71975533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010382255.4A Active CN111535423B (en) | 2020-05-08 | 2020-05-08 | Safe ecological ditch |
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| Country | Link |
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| CN (1) | CN111535423B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016079738A (en) * | 2014-10-21 | 2016-05-16 | 鈴木 宏 | Method for cleaning water passage |
| CN108301498A (en) * | 2018-01-23 | 2018-07-20 | 武汉圣禹排水***有限公司 | Dross auto-collection system |
| CN207761028U (en) * | 2017-10-30 | 2018-08-24 | 武汉圣禹排水***有限公司 | A kind of first rain storage pond with gravity feed structure |
| CN208038129U (en) * | 2017-12-28 | 2018-11-02 | 湖南新九方科技有限公司 | A kind of ecological canal |
| CN208266831U (en) * | 2018-01-18 | 2018-12-21 | 江西赣米香食品科技有限公司 | A kind of water conservancy irrigation canals and ditches exclusion device |
| CN109518787A (en) * | 2018-11-23 | 2019-03-26 | 中铁四川生态城投资有限公司 | A kind of first rain control structure of rainwash |
| CN209873491U (en) * | 2019-04-01 | 2019-12-31 | 广东景源建设工程有限公司 | Road drainage system |
-
2020
- 2020-05-08 CN CN202010382255.4A patent/CN111535423B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016079738A (en) * | 2014-10-21 | 2016-05-16 | 鈴木 宏 | Method for cleaning water passage |
| CN207761028U (en) * | 2017-10-30 | 2018-08-24 | 武汉圣禹排水***有限公司 | A kind of first rain storage pond with gravity feed structure |
| CN208038129U (en) * | 2017-12-28 | 2018-11-02 | 湖南新九方科技有限公司 | A kind of ecological canal |
| CN208266831U (en) * | 2018-01-18 | 2018-12-21 | 江西赣米香食品科技有限公司 | A kind of water conservancy irrigation canals and ditches exclusion device |
| CN108301498A (en) * | 2018-01-23 | 2018-07-20 | 武汉圣禹排水***有限公司 | Dross auto-collection system |
| CN109518787A (en) * | 2018-11-23 | 2019-03-26 | 中铁四川生态城投资有限公司 | A kind of first rain control structure of rainwash |
| CN209873491U (en) * | 2019-04-01 | 2019-12-31 | 广东景源建设工程有限公司 | Road drainage system |
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| Publication number | Publication date |
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| CN111535423B (en) | 2021-07-23 |
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Effective date of registration: 20210709 Address after: 322000 room 7222, 7th floor, 248 Huangyuan Road, Jiangdong Street, Yiwu City, Jinhua City, Zhejiang Province Applicant after: Yiwu Gaoyang Construction Engineering Co.,Ltd. Address before: No.235, Mozhi North Road, Yinzhou District, Ningbo City, Zhejiang Province, 315100 Applicant before: Zeng Xu |
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