CN115288375A - Prevent drainage gutter of flood - Google Patents
Prevent drainage gutter of flood Download PDFInfo
- Publication number
- CN115288375A CN115288375A CN202211004497.5A CN202211004497A CN115288375A CN 115288375 A CN115288375 A CN 115288375A CN 202211004497 A CN202211004497 A CN 202211004497A CN 115288375 A CN115288375 A CN 115288375A
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- China
- Prior art keywords
- flow control
- main groove
- groove
- sand collecting
- flood
- 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
- 238000007667 floating Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 239000004576 sand Substances 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract 4
- 230000000630 rising effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 235000004522 Pentaglottis sempervirens Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/064—Gutters
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/0404—Drainage on the roof surface
- E04D13/0409—Drainage outlets, e.g. gullies
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/076—Devices or arrangements for removing snow, ice or debris from gutters or for preventing accumulation thereof
- E04D13/0767—Strainers at connection between gutter and down pipe
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/08—Down pipes; Special clamping means therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/0404—Drainage on the roof surface
- E04D13/0409—Drainage outlets, e.g. gullies
- E04D2013/0427—Drainage outlets, e.g. gullies with means for controlling the flow in the outlet
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The invention provides an anti-overflow drainage gutter which comprises a main groove, an auxiliary groove, a drainage pipe and a flow controller, wherein the auxiliary groove is fixed at the lower side of the main groove; the flow control device comprises a floating plate, a pull rod, two guide strips and a flow control assembly, wherein the two guide strips are vertically and symmetrically arranged on the inner side wall of the main groove, two ends of the floating plate are respectively embedded with the two guide strips and can move up and down along the guide strips, one end of the pull rod is fixed in the middle of the floating plate, and the other end of the pull rod is fixedly connected with the middle of the flow control assembly. The invention can dynamically adjust the flow-dividing and water-discharging capacity of the overflow port, and can start flow-dividing and water-discharging from the moment when the water-discharging capacity of the water-discharging pipe of the main groove reaches the upper limit.
Description
Technical Field
The invention relates to the technical field of building drainage, in particular to a drainage gutter capable of preventing overflowing.
Background
The current roof drainage mode is mainly unorganized drainage and organized drainage. The water is drained in an unorganized way, namely the rainwater falls down along the eave by gravity; organized drainage, namely, a gutter is arranged on the lower side of the roof, a water pumping pipe is arranged and grounded, rainwater is gathered in the gutter through the roof in rainy days, and then the rainwater is drained through the water pumping pipe.
Under the general condition, when the gutter is designed, the design of an overflow port needs to be considered, when the rainfall exceeds the drainage capacity designed by the gutter or the gutter downpipe is blocked to cause unsmooth drainage, the water level reaches a certain height, rainwater can be discharged through the overflow port to relieve the problem of insufficient drainage of the gutter, the phenomenon that water overflows from the edge of the gutter due to the fact that the water is too large and cannot be discharged in time is reduced, but the arrangement and the shunting capacity of the overflow port are usually fixed at the beginning of the design, the problem of insufficient drainage relieved by shunting of the overflow port also needs to be solved when the water level in the gutter is high enough, the overflow port is not sensitive to the water level and the water quantity, and once the water level rises quickly in a short time, the overflow port cannot drain water quickly.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an anti-overflow drainage gutter, which solves the problems that the drainage capacity of an overflow port is fixed and the water quantity and the water level are not sensitive enough in the prior art.
According to the embodiment of the invention, the anti-overflow drainage gutter comprises a main groove, an auxiliary groove, a drainage pipe and a flow controller, wherein the auxiliary groove is fixed on the lower side of the main groove, the lower side of one end of the main groove is communicated with the drainage pipe, a plurality of overflow ports communicated with the auxiliary groove are formed in the bottom of the main groove, one flow controller is arranged at each overflow port, a branch pipe is communicated with the lower side of the auxiliary groove, and the branch pipe is communicated with the drainage pipe;
the flow control device comprises a floating plate, a pull rod, two guide strips and a flow control assembly, wherein the two guide strips are symmetrically arranged on the inner side wall of a main groove in a vertical mode, the two ends of the floating plate are respectively embedded with the two guide strips and can move up and down along the guide strips, one end of the pull rod is fixed in the middle of the floating plate, the other end of the pull rod is fixedly connected with the middle of the flow control assembly, and the size of an overflow port of the flow control assembly can be controlled and is used for controlling the amount of water flowing into an auxiliary groove from the main groove.
Preferably, the flow control assembly comprises a circular sealing plate and a plurality of coaxially arranged flow control rings located on the same plane, the middle of the upper side of the sealing plate is fixedly connected with one end of the pull rod, the inner diameter of the outer side flow control ring between every two adjacent flow control rings is equal to the outer diameter of the inner side flow control ring, the diameter of the sealing plate is the same as the inner diameter of the innermost side flow control ring and is arranged in the middle of the innermost side flow control ring, L-shaped lifting rods are symmetrically fixed on the lower side edges of the sealing plate and the flow control rings, the free ends of the lifting rods extend outwards in the radial direction of the flow control rings, stoppers extending outwards in the radial direction are symmetrically fixed on the upper side edges of the sealing plate and the flow control rings, and the lower sides of the free ends of the stoppers are abutted against the upper sides of the adjacent flow control rings.
Preferably, the free end of the lifting rod can be abutted against the photo album of the adjacent outer side flow control ring at a certain moment, the free end of the lifting rod on the outermost side flow control ring can be abutted against the lower side of the main groove, the lower side of the free end of the stop block can be abutted against the upper side of the adjacent flow control ring, and the stop block on the outermost side flow control ring can be abutted against the bottom side of the main groove.
Preferably, the sand collecting device further comprises a plurality of arc-shaped sand collecting pipelines, all the sand collecting pipelines are arranged on the same side of the main groove, two ends of each sand collecting pipeline are communicated with the main groove, a sand collecting groove is formed in the lower side of the middle of the inside of each sand collecting pipeline, and a baffle which partially covers the opening is fixed at the opening of the sand collecting groove.
Preferably, a filter screen is arranged at the communication position of one end of the sand collecting pipeline, which is far away from the drain pipe, and the main groove, and the filter screen is obliquely arranged towards the direction of the sand collecting pipeline.
Preferably, a grid plate inclined towards the sand collecting pipeline is arranged at the opening at the upper side of the main groove.
Preferably, a screen is embedded at the communication part of the drain pipe and the main groove.
Compared with the prior art, the invention has the following beneficial effects:
when the drainage capacity of the drainage pipe reaches the upper limit, the water amount in the main groove begins to increase, the water level begins to rise rapidly, in the rising process, the floating plate can be driven to float upwards, the pull rod is pulled to move upwards, the pull rod can drive the flow control assembly to change the size of the overflow port, water in the main groove flows into the auxiliary groove through the overflow port and then flows into the drainage pipe to be discharged, the diversion effect is achieved, the drainage tension problem of the main groove is relieved, meanwhile, the distance of the floating plate moving upwards is increased along with the rising of the water level, the size of the overflow port opened by the flow control assembly is larger, the diversion effect is stronger, the diversion drainage capacity of the overflow port can be dynamically adjusted, the diversion drainage capacity is sensitive to the water level, diversion drainage can begin to be conducted at the moment when the drainage capacity of the drainage pipe of the main groove reaches the upper limit, the rising speed of the water level in the main groove is reduced, the overflow port and the auxiliary groove are utilized to the maximum, the drainage capacity is improved, and the water in the main groove is prevented from overflowing as much as possible.
Drawings
Fig. 1 is a bird's eye view of a gutter according to an embodiment of the present invention.
Fig. 2 is a front view of a gutter according to an embodiment of the invention.
FIG. 3 is a cross-sectional view taken along direction A of FIG. 1 according to an embodiment of the present invention.
In the drawings, wherein: the device comprises a main groove 1, a filter screen 2, a flow control ring 3, a guide bar 4, a floating plate 5, a sand collecting channel 6, a sand collecting groove 7, a baffle 8, a screen 9, an auxiliary groove 10, a branch pipe 11, a drain pipe 12, a grid plate 13, a pull rod 14, a stop block 15, a lifting rod 16 and a sealing plate 17.
Detailed Description
The technical solution of the present invention is further described with reference to the drawings and the embodiments.
As shown in fig. 1 to 3, an embodiment of the present invention provides an anti-overflow drainage gutter, including a main groove 1, an auxiliary groove 10, a drainage pipe 12, and a flow controller, where the auxiliary groove 10 is fixed at the lower side of the main groove 1, the lower side of one end of the main groove 1 is communicated with the drainage pipe 12, the bottom of the main groove 1 is provided with a plurality of overflow ports communicated with the auxiliary groove 10, each overflow port is provided with a flow controller, the lower side of the auxiliary groove 10 is communicated with a branch pipe 11, and the branch pipe 11 is communicated with the drainage pipe 12;
the accuse current ware includes kickboard 5, pull rod 14, two gibs 4 and accuse flow assembly, the vertical symmetry setting of two gibs 4 is on main slot 1's inside wall, kickboard 5's both ends respectively with two gibs 4 looks inlays and can follow gib 4 and reciprocate, the middle part at kickboard 5 is fixed to pull rod 14's one end, the other end and the middle part looks fixed connection of accuse flow assembly, the size of the steerable overflow mouth of accuse flow assembly for the water yield of control follow main slot 1 inflow auxiliary groove 10.
When the drainage capacity of the drainage pipe 12 reaches the upper limit, the water amount in the main groove 1 starts to increase, the water level starts to rise rapidly, in the rising process, the floating plate 5 can be driven to float upwards, the pull rod 14 is pulled to move upwards, the pull rod 14 can drive the flow control assembly to change the size of an overflow port, water in the main groove 1 flows into the auxiliary groove 10 through the overflow port and then flows into the drainage pipe 12 to be discharged, the diversion effect is achieved, the drainage shortage problem of the main groove 1 is relieved, meanwhile, the distance of the upward movement of the floating plate 5 is increased along with the rising of the water level, the larger the overflow port is opened by the flow control assembly, the stronger the diversion effect is, the diversion drainage capacity of the overflow port can be adjusted dynamically, meanwhile, the water level is sensitive, the diversion drainage can be started at the moment that the drainage capacity of the drainage pipe 12 of the main groove 1 reaches the upper limit, the rising speed of the water level in the main groove 1 is reduced, the overflow port and the auxiliary groove 10 are utilized to the maximum, the drainage capacity is improved, and the water in the main groove 1 is prevented from overflowing as much as possible.
The flow control assembly comprises a circular sealing plate 17 and a plurality of coaxially arranged flow control rings 3 which are positioned on the same plane, the middle part of the upper side of the sealing plate 17 is fixedly connected with one end of a pull rod 14, the inner diameter of the outer side flow control ring 3 between every two adjacent flow control rings 3 is equal to the outer diameter of the inner side flow control ring 3, the diameter of the sealing plate 17 is equal to the inner diameter of the innermost side flow control ring 3 and is arranged in the middle part of the innermost side flow control ring 3, L-shaped lifting rods 16 are symmetrically fixed on the lower side edges of the sealing plate 17 and the flow control rings 3, the free ends of the lifting rods 16 extend outwards along the radial direction of the flow control rings 3, stoppers 15 extending outwards along the radial direction are symmetrically fixed on the upper side edges of the sealing plate 17 and the flow control rings 3, and the lower sides of the free ends of the stoppers 15 are abutted against the upper sides of the adjacent flow control rings 3.
The free end of the lifting rod 16 can be abutted against the photo album of the adjacent outer side flow control ring 3 at a certain moment, the free end of the lifting rod 16 on the outermost side flow control ring 3 can be abutted against the lower side of the main groove 1, the lower side of the free end of the stop block 15 can be abutted against the upper side of the adjacent flow control ring 3, and the stop block 15 on the outermost side flow control ring 3 can be abutted against the bottom side of the main groove 1.
When the drainage capacity of the drainage pipe 12 does not reach the upper limit, the closing plate 17 and the stop blocks 15 on the upper sides of all the flow control rings 3 are lapped on the upper sides of the adjacent flow control rings 3, and the stop blocks 15 on the outermost flow control rings 3 are lapped on the bottom sides of the main grooves 1, so that the whole overflow port is closed, water in the main grooves 1 is normally drained out of the drainage pipe 12, and is not reserved in the auxiliary grooves 10.
When the drainage capacity of the drainage pipe 12 reaches the upper limit, the water amount in the main groove 1 begins to increase, the water level begins to rise rapidly, in the rising process, the floating plate 5 is driven to float upwards, the pull rod 14 is pulled to move upwards, the pull rod 14 only pulls up the sealing plate 17 at the beginning, the size of an overflow port is the same as the size of the cross section of the sealing plate 17 at the moment, part of water flows into the auxiliary groove 10 from the overflow port to realize flow splitting, the drainage of the main groove 1 is assisted, the rising speed of the water level is reduced, then if the water level still rises, the size of the overflow port is small, the floating plate 5 moves upwards along with the rising of the water level, the free end of the lifting rod 16 on the lower side of the sealing plate 17 abuts against the adjacent flow control ring 3 and lifts up the flow control ring 3 along with the upward movement of the floating plate 5, the size of the overflow port is the same as the outer diameter interface of the flow control ring 3 at the moment, the size of the overflow port is increased, the air flow effect is enhanced, and the rising speed of the water level is greatly reduced;
if the water level continues to rise, the adjacent flow control rings 3 are sequentially lifted in the same way, the size of the overflow port is continuously increased, the flow distribution effect is enhanced, more water in the main groove 1 flows into the auxiliary groove 10 and is discharged, the flow distribution and drainage capacity of the overflow port can be dynamically adjusted, and meanwhile, the water level is very sensitive, the flow distribution can be started at the moment that the drainage capacity of the drainage pipe 12 of the main groove 1 reaches the upper limit, and the water level rising speed in the main groove 1 is reduced.
The sand collecting device is characterized by further comprising a plurality of arc-shaped sand collecting pipelines, wherein all the sand collecting pipelines are arranged on the same side of the main groove 1, two ends of each sand collecting pipeline are communicated with the main groove 1, a sand collecting groove 7 is formed in the lower side of the middle of the sand collecting pipeline, a baffle 8 which partially covers an opening is fixed at an opening of the sand collecting groove 7, and the right half of the opening of the sand collecting groove 7 can be covered by the baffle 8.
When water in the main groove 1 flows to the drain pipe 12, silt in the main groove 1 can be driven to move to the drain pipe 12, part of water flows into a silt collecting pipeline along with part of silt at the moment, the silt collecting groove 7 sinks from the opening of the left half part of the silt collecting groove 7, the silt is collected through the plurality of silt collecting grooves 7, and the phenomenon that a large amount of silt is accumulated in the main groove 1 to cause blockage and influence the drainage capacity of the whole gutter is avoided.
The one end of sand collection pipeline far away from drain pipe 12 is equipped with filter screen 2 with the intercommunication department of main slot 1, and filter screen 2 sets up to the slope of sand collection pipeline direction.
A grid plate 13 inclined towards the sand collecting pipeline is arranged at the opening at the upper side of the main groove 1; a screen 9 is embedded at the communication part of the drain pipe 12 and the main groove 1; the large-size sundries falling on the grid plate 13 can slide down along the grid plate 13 to fall out of the main groove 1, so that the large-size sundries can be prevented from falling into the main groove 1, and the screen 9 can prevent the small-size sundries in the main groove 1 from falling into the drain pipe 12 to be accumulated, so that the drain pipe 12 is blocked.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. The utility model provides an anti-flood's drainage gutter which characterized in that: the water-saving device comprises a main groove, an auxiliary groove, a drain pipe and a flow controller, wherein the auxiliary groove is fixed on the lower side of the main groove, the lower side of one end of the main groove is communicated with the drain pipe, the bottom of the main groove is provided with a plurality of overflow ports communicated with the auxiliary groove, each overflow port is provided with the flow controller, the lower side of the auxiliary groove is communicated with a branch pipe, and the branch pipes are communicated with the drain pipe;
the flow control device comprises a floating plate, a pull rod, two guide strips and a flow control assembly, wherein the two guide strips are symmetrically arranged on the inner side wall of a main groove in a vertical mode, the two ends of the floating plate are respectively embedded with the two guide strips and can move up and down along the guide strips, one end of the pull rod is fixed in the middle of the floating plate, the other end of the pull rod is fixedly connected with the middle of the flow control assembly, and the size of an overflow port of the flow control assembly can be controlled and is used for controlling the amount of water flowing into an auxiliary groove from the main groove.
2. A flood-resistant drain gutter as claimed in claim 1, wherein: the flow control assembly comprises a circular sealing plate and a plurality of flow control rings which are coaxially arranged and located on the same plane, the middle of the upper side of the sealing plate is fixedly connected with one end of a pull rod, the inner diameter of each flow control ring on the outer side between every two adjacent flow control rings is equal to the outer diameter of each flow control ring on the inner side, the diameter of the sealing plate is the same as the inner diameter of each flow control ring on the inner side, the middle of each flow control ring on the inner side is arranged in the middle of each flow control ring on the inner side, L-shaped lifting rods are symmetrically fixed on the lower side edges of the sealing plate and the flow control rings, the free ends of the lifting rods extend outwards along the radial direction of the flow control rings, check blocks extending outwards along the radial direction are symmetrically fixed on the upper side edges of the sealing plate and the flow control rings, and the lower sides of the free ends of the check blocks are abutted to the upper sides of the adjacent flow control rings.
3. A flood-proof drainage gutter as claimed in claim 1, wherein: the free end of the lifting rod can be abutted against the photo album of the adjacent outer side flow control ring at a certain moment, the free end of the lifting rod on the outermost side flow control ring can be abutted against the lower side of the main groove, the lower side of the free end of the stop block can be abutted against the upper side of the adjacent flow control ring, and the stop block on the outermost side flow control ring can be abutted against the bottom side of the main groove.
4. A flood-resistant drain gutter as claimed in claim 1, wherein: the sand collecting device is characterized by further comprising a plurality of arc-shaped sand collecting pipelines, wherein all the sand collecting pipelines are arranged on the same side of the main groove, two ends of each sand collecting pipeline are communicated with the main groove, a sand collecting groove is formed in the lower side of the middle in each sand collecting pipeline, and a baffle plate for partially shielding the opening is fixed at the opening of each sand collecting groove.
5. An anti-flood drain gutter as claimed in claim 4, wherein: the one end that the sand collection pipeline kept away from the drain pipe communicates the department with main slot and is equipped with the filter screen, the filter screen sets up to sand collection pipeline direction slope.
6. A flood-proof drainage gutter as claimed in claim 1, wherein: and a grid plate inclined towards the sand collecting pipeline is arranged at the opening at the upper side of the main groove.
7. A flood-proof drainage gutter as claimed in claim 1, wherein: the screen is embedded in the communication position of the drain pipe and the main groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211004497.5A CN115288375A (en) | 2022-08-22 | 2022-08-22 | Prevent drainage gutter of flood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211004497.5A CN115288375A (en) | 2022-08-22 | 2022-08-22 | Prevent drainage gutter of flood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115288375A true CN115288375A (en) | 2022-11-04 |
Family
ID=83830363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211004497.5A Pending CN115288375A (en) | 2022-08-22 | 2022-08-22 | Prevent drainage gutter of flood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115288375A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204679239U (en) * | 2015-04-22 | 2015-09-30 | 山西大学 | A kind of coiled sand-taped instrument |
| CN211037587U (en) * | 2019-10-08 | 2020-07-17 | 浙江工业职业技术学院 | Anti-seepage rainwater hopper for roof plastic-connected drainage pipe |
| CN111648536A (en) * | 2020-06-29 | 2020-09-11 | 海通建设集团有限公司 | Gutter structure of hyperboloid metal roofing |
| KR102249356B1 (en) * | 2019-11-28 | 2021-05-07 | 김성우 | A rain gutter structre |
| CN113863072A (en) * | 2021-10-12 | 2021-12-31 | 广东深已建设工程有限公司 | Construction method for widening roadbed of concrete highway |
-
2022
- 2022-08-22 CN CN202211004497.5A patent/CN115288375A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204679239U (en) * | 2015-04-22 | 2015-09-30 | 山西大学 | A kind of coiled sand-taped instrument |
| CN211037587U (en) * | 2019-10-08 | 2020-07-17 | 浙江工业职业技术学院 | Anti-seepage rainwater hopper for roof plastic-connected drainage pipe |
| KR102249356B1 (en) * | 2019-11-28 | 2021-05-07 | 김성우 | A rain gutter structre |
| CN111648536A (en) * | 2020-06-29 | 2020-09-11 | 海通建设集团有限公司 | Gutter structure of hyperboloid metal roofing |
| CN113863072A (en) * | 2021-10-12 | 2021-12-31 | 广东深已建设工程有限公司 | Construction method for widening roadbed of concrete highway |
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Effective date of registration: 20240607 Address after: No. 618 Liangjiang Avenue, Longxing Town, Liangjiang New Area, Yubei District, Chongqing, 401120 Applicant after: China Construction Eighth Bureau Liangjiang Construction Co.,Ltd. Country or region after: China Address before: 27th Floor, 1568 Century Avenue, China (Shanghai) Free Trade Pilot Area, Pudong New Area, Shanghai, 2013 Applicant before: CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION Co.,Ltd. Country or region before: China |