CN108377800B - Grille, roof greening device and roof greening method - Google Patents
Grille, roof greening device and roof greening method Download PDFInfo
- Publication number
- CN108377800B CN108377800B CN201810069268.9A CN201810069268A CN108377800B CN 108377800 B CN108377800 B CN 108377800B CN 201810069268 A CN201810069268 A CN 201810069268A CN 108377800 B CN108377800 B CN 108377800B
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- Prior art keywords
- side wall
- bottom plate
- roof greening
- roof
- base
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Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 230000002262 irrigation Effects 0.000 claims abstract description 10
- 238000003973 irrigation Methods 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 9
- 239000002689 soil Substances 0.000 description 15
- 241000196324 Embryophyta Species 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 239000003621 irrigation water Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004746 geotextile Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
- A01G9/033—Flat containers for turf, lawn or the like, e.g. for covering roofs
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
-
- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Cultivation Of Plants (AREA)
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
Abstract
The invention discloses a grille, which comprises a base and a flange connected to the base, wherein an accommodating space is arranged in the base, drain holes are formed in the side wall of the base and the flange, the drain holes of the side wall are communicated with the accommodating space, and the drain holes of the flange penetrate through the flange; the roof greening device comprises a bottom plate, an irrigation pipeline and the grids, wherein a plurality of water storage invaginations are arranged on the bottom plate, the grids are connected with the bottom plate through a base, after the grids are connected, the accommodating space is communicated with the water storage invaginations, and the irrigation pipeline is arranged in the accommodating space in a penetrating manner; and a roof greening method using the roof greening device. The invention has the advantages of exquisite structure, convenient combination, small influence on roof bearing, large available area, capability of realizing diversification of plant planting varieties and meeting the requirements of roof greening on the basis of simple installation and low cost.
Description
Technical Field
The invention relates to the field of landscaping, in particular to a grid, a roof greening device using the grid and a method for greening a roof by using the greening device.
Background
With the rapid development of urban construction, how to enlarge the greening area in a limited urban space becomes a new problem which people have to face and solve, and the roof is taken as a fifth elevation of a building to occupy 1/5 of the urban area and is in a neglected and forgotten state for a long time. The development of roof greening is not only the development of green land to the air, saves land, exploits the effective method of urban space, but also the perfect combination of building art and garden art; not only can the urban greening coverage rate be improved, but also the radiant heat of building material roofs can be reduced, the urban heat island effect is weakened, urban environment is protected, urban systems are sound, and the effect of improving the quality of the human living environment is not negligible.
With the development of modern technology and the improvement of aesthetic quality, roof greening also has a plurality of problems. The reason for this is that many building roof types, in addition to conventional planar roofs, are also presented with a wide variety of shaped roofs, which are complex and varied in construction, and conventional roof greening device designs are difficult to meet. With respect to the current technical research, the research on the conventional planar roof greening device is relatively more, the research on the inclined plane roof device is relatively less, and the research on the greening device developed on the special-shaped roof is less. In the prior art, most roof greening devices adopt planting frames and planting blankets, the fixing effect of the two planting modes on soil is poor, and the soil can be accumulated downwards after a period of time. The lack of a complete dropper system also causes increased difficulty in post-maintenance. Meanwhile, because rainwater collection cannot be realized, great resource waste can be generated in the working process of the greening device, and the method obviously does not accord with the green circulation ecological concept of roof greening. In addition, the whole structure of the traditional greening device is complex, the construction difficulty is high, the maintenance is not facilitated, and the applicability is poor, so that the current roof greening lacks an application foundation for large-scale popularization.
Disclosure of Invention
The invention aims to provide a grid capable of effectively permeating water and preventing soil from sliding down, a roof greening device which integrates light, simple, water storage and droppers into a whole and a method for greening a roof by using the same.
The technical scheme adopted by the invention is as follows:
A grid comprises a base and a flange connected to the base, wherein an accommodating space is formed in the base, drain holes are formed in the side wall of the base and the flange, the drain holes in the side wall are communicated with the accommodating space, and the drain holes in the flange penetrate through the flange.
Preferably, the side wall of the base comprises a vertical side wall and a horizontal side wall, the vertical side wall and the horizontal side wall are connected to opposite sides of the horizontal side wall, and the vertical side wall and the horizontal side wall surround to form a containing space with openings at two sides.
Further preferably, the device further comprises an arc side wall which is respectively connected with the horizontal side wall and the vertical side wall on one side, and drain holes are arranged on the arc side wall and/or the horizontal side wall and/or the vertical side wall connected with the arc side wall.
Still more preferably, a hook is provided at the top end of the flange.
The utility model provides a roof greening device, includes bottom plate, irrigation pipe and foretell grid, is equipped with a plurality of water storage invaginations on the bottom plate, and grid accessible base is connected with the bottom plate, and after being connected, accommodation space and water storage invagination intercommunication, irrigation pipe wears to establish in the accommodation space.
Preferably, the water storage device further comprises a fixing piece, wherein the fixing piece comprises a foot pad and holes, and the holes can accommodate the water storage invagination.
Preferably, the base is a flexible base that can be rolled.
A roof greening method using the roof greening device comprises the following steps,
S10, paving a bottom plate on a roof;
s20, fixing a plurality of grids on the bottom plate;
s30, filling planting matrixes between adjacent grids;
s40, planting plants in the planting matrix.
Preferably, in step S10, a plurality of bottom plates are laid in an overlapping manner, and the water storage sink at the edge of the subsequent bottom plate is inserted into the water storage sink at the edge of the previous bottom plate.
Preferably, in step S30, the step of filling the planting substrate between adjacent grids: the method further comprises the step of paving geotechnical cloth on the surface of the planting substrate, wherein hooks are arranged at the top ends of the flanges, and the geotechnical cloth is fixed on the hooks.
The invention has the beneficial effects that:
(1) The grid can effectively permeate water and prevent soil from sliding down, and the drain holes on the grid can play a role in blocking soil from falling down and can also construct a seepage and drainage channel of a greening surface layer, so that the hidden danger that a large amount of accumulated water is difficult to drain in the moment when a large-area roof greening is in extremely heavy storm is effectively treated.
(2) The combination of the grid and the bottom plate in the device can be closely paved along with the change of various curved surfaces or special-shaped roofs to carry out greening construction, is less limited by the shapes of the roofs, has strong applicability, solves the problem that the conventional roof greening cannot solve the roof greening with radian, and realizes the planting of the special-shaped roofs.
(3) The device has exquisite structure, convenient combination, small influence on roof bearing, no occupied space per se, large usable area and no damage to the original roof base layer. Compared with single variety of the planting blanket, the device can realize diversification of plant planting varieties; compared with a modular roof greening device, the device is lighter and simpler, and can meet the multiple demands of roof greening on the basis of simple installation and low cost.
(4) The roof greening method has simple steps, is convenient and effective, and has good applicability to roofs with different planes, inclined planes and curved surfaces.
Drawings
Fig. 1 is a schematic structural view of a roof greening apparatus according to an embodiment of the present invention.
Fig. 2 is an enlarged partial view of a bottom view of the combination of the base plate and fastener of the embodiment of fig. 1 of the present invention.
Fig. 3 is an installation view of the embodiment of the invention shown in fig. 1.
Detailed Description
The conception and the technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features and effects of the present invention.
Fig. 1 is a schematic structural view of a roof greening apparatus according to an embodiment of the present invention. As shown in fig. 1, the grid 1 is made of a polymer material, the grid 1 comprises a base 12 at the lower part and a flange 11 above the base 12, hooks 111 distributed at intervals are arranged at the upper end of the flange 11, and hollow drainage holes 112 distributed densely and equidistantly are arranged in the main body part of the flange 11. A connecting reinforcing rib 13 is connected between the flange 11 and the base 12. The middle upper part of the base 12 is provided with hollowed-out drain holes 121 which are densely and equidistantly distributed, the lower part of the base 12 is provided with a water storage baffle 122 which is approximately vertical in shape, and a certain number of strip-shaped mounting holes 123 are arranged on the part extending from the tail end of the base 12 to the outer ends of the two sides. The accommodation space formed by the base 12 is a special irrigation channel which is communicated up and down, an irrigation water pipe 4 is arranged, the irrigation water pipe 4 is a porous hard water pipe, and small holes 41 which are uniformly distributed are arranged at the bottom of the irrigation water pipe 4. The bottom plate 2 is arranged below the grid 1, the bottom plate 2 is also made of a high polymer material and is a flexible curled water storage bottom plate, the bottom plate 2 is provided with regularly arranged water storage invaginations 21, the water storage invaginations 21 are in an inverted truncated cone shape, and a fixing piece 3 is further arranged below the bottom plate 2.
Fig. 2 is an enlarged partial view of a bottom view of the combination of the base plate and fastener of the embodiment of fig. 1 of the present invention. As shown in fig. 2, the bottom plate 2 is provided with regularly arranged water storage invaginations 21 with uniform intervals, the water storage invaginations 21 are in an inverted truncated cone shape, the invagination structure is hollow, the bottom is closed, and the shapes and the sizes of all the water storage invaginations 21 are consistent. The fixing member 3 is provided with 9 uniformly distributed circular hollow holes 31, the distance between adjacent holes 31 is the same as the distance between adjacent water storage invaginations 21, and the diameter of the holes 31 is the same as the diameter of the top horizontal section of the water storage invaginations 21. A solid inverted circular truncated cone-shaped foot 32 is arranged in the center of a square formed by every four adjacent holes 31, and 4 feet 32 with the same shape and size are arranged on one fixing piece 3. The sum of the thickness of the main body of the fixing member 3 plus the height of the foot pads 32 is equal to the height of the water storage recess 21.
Fig. 3 is an assembly view of the embodiment of the invention shown in fig. 1. As shown in fig. 3, the hole of the fixing piece 3 is sleeved in the water storage invagination 21 on the bottom plate 2 under the bottom plate 2, and the bottom of the water storage invagination 21 and the pad feet 32 of the fixing piece 3 form a common support for the whole structure. The grille 1 is erected above the bottom plate 2, the strip-shaped mounting holes 123 are driven in by self-tapping screws 124, the self-tapping screws 124 penetrate through the strip-shaped mounting holes 123, the bottom plate 2 and the feet 32 of the fixing piece 3 and are fixed in the pp polyethylene plate 5 laid on the roof base surface, so that firm installation is performed, and meanwhile, waterproof and antirust caps 125 are added on the self-tapping screws 124. The invention meets the requirements of the national JGJ155-2007 technical regulations for planting roofing engineering.
The concrete application mode of the invention in the roof greening process is as follows:
When the roof is an inclined plane or a flexible roof, the roof greening device is installed from a roof basal plane, firstly, a layer of pp polyethylene plate is paved on the basal plane of the roof, and the pp polyethylene plate is fixed by self-tapping screws. The bottom plate is laid from the lower part (eave) of the roof, and similar to the laying method of roof tiles, two rows of truncated cone-shaped invagination structures on the edges of the adjacent bottom plates are covered on the truncated cone-shaped invagination structures on the overlapping edges of the other bottom plates, so that the bottom plate is laid.
The number of the grids is increased or decreased according to the inclination of the inclined roof and the inclination of the curved roof, and the grids are arranged in a horizontal straight line shape during installation. When the waterproof device is installed, the water pipe channel of the grille is upwards along a roof, a fixing piece is arranged below the position where the grille is arranged on the bottom plate, the size of a hole of the fixing piece is matched with the size of a section of the water storage subsidence of the bottom plate, the water storage subsidence is arranged in the hole of the fixing piece, the foot pads of the fixing piece are downwards arranged at the corresponding positions below the grille installation holes on the bottom plate respectively, self-tapping screws are driven into the foot pads of the fixing piece through the strip installation holes of the grille and then penetrate into the pp polyethylene plate, so that the waterproof device is fixed on the pp polyethylene plate, and waterproof and antirust caps are added on the self-tapping screws.
After the installation is finished, the bottom plate is covered with light planting soil, the thickness of the soil is not higher than that of the grid, and the soil is determined according to different roof slopes and gradients. In addition, geotextile can be paved above the soil and fixed by hooks at the upper part of the grid, so that the soil is prevented from sliding off. Finally, planting proper greening plants in the planting soil.
The embodiment has the following beneficial effects:
(1) The curled bottom plate can be suitable for roofs of various shapes through splicing, such as: slope, slope and special-shaped roof;
(2) The grid can effectively permeate water and prevent soil from sliding down, the hollow drainage holes are arranged, so that the device can rapidly filter accumulated water when encountering extreme heavy rain climate, roof greening safety is ensured, the lower water baffle has a certain water storage function while preventing soil from falling down, a microminiature water storage space can be formed in slight rain weather after the water baffle is combined with a conventional dropper, water resources are fully utilized, waste is avoided, a hollow closed invagination structure below a bottom plate forms a water storage layer, rainwater can be timely accumulated, urban drainage pressure is effectively relieved, water resources are saved, meanwhile, the water storage structure is consistent with the water supply condition of plant roots under natural conditions, the natural state of plant growth can be better simulated, and plant growth is promoted; in addition, the combination of the grids and the bottom plate can cooperatively collect rainwater and equally and uniformly store the rainwater, so that water-saving irrigation for greening inclined surfaces and curved roofs is realized;
(3) The combination of the bottom plate and the fixing piece can enable the roof basal plane to be in an overhead state, effectively prevent heat source conduction, achieve the effects of heat insulation and heat preservation, and save energy sources;
(4) The fixing piece can effectively fix the grille and the bottom plate, and the whole installation is carried out without damage, so that the original roof base layer is not damaged;
(5) If the roof gradient is large, geotextile can be fixed at the grid hooks, so that soil slide and loss are effectively prevented, plants are stabilized, and potential safety hazards of plant sliding are effectively reduced;
(6) The grid is internally provided with the accommodating space, can be used for placing irrigation channels, has simple modeling, saves space, can automatically increase the dropper according to the planting condition of roof plants, and is flexible and convenient;
(7) The materials are selected lightly, the dead weight is light, and the influence on roof bearing is small.
The embodiment has the advantages of low comprehensive cost, simple materials, durability, smart structure, changeable functions, quick and simple construction and high safety. Because the upper limit of the height of the stackable soil is high, the method has wide adaptability to planted plants with different root system demands, and can fully meet the plant diversity demands of owners.
It will be apparent that the embodiments described above are only some, but not all, embodiments of the invention. Any changes or substitutions that would be readily apparent to one skilled in the art within the scope of the present disclosure are intended to be encompassed within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (3)
1. A roof greening method comprising a roof greening device, the roof greening device comprising:
The bottom plate is provided with a plurality of water storage invaginations and is a flexible bottom plate capable of being curled;
Irrigation pipes; and (3) with
The grid comprises a base and a flange connected to the base, a hook is arranged at the top end of the flange, the base is provided with a side wall, the side wall comprises a vertical side wall, a horizontal side wall and an arc side wall respectively connected with the horizontal side wall and the vertical side wall on one side, and the side wall surrounds a containing space with openings on two sides for containing irrigation pipes; the circular arc side wall and/or the horizontal side wall and/or the vertical side wall connected with the circular arc side wall are/is provided with a drain hole, the drain hole on the side wall is communicated with the accommodating space, and the drain hole on the baffle edge penetrates through the baffle edge; the grid can be connected with the bottom plate through the base, and after the grid is connected, the accommodating space is communicated with the water storage sink, and the irrigation pipeline is arranged in the accommodating space in a penetrating manner;
the fixing piece comprises a foot pad and holes, and the holes can accommodate the water storage invagination;
the roof greening method comprises the following steps:
S10, paving a bottom plate on a roof;
S20, fixing a plurality of grids on the bottom plate;
S30, filling planting matrixes between adjacent grids;
S40, planting plants in the planting matrix.
2. The roof greening method according to claim 1, wherein in step S10, a plurality of the bottom plates are laid in an overlapping manner, and the water storage sink at the edge of the subsequent bottom plate is inserted into the water storage sink at the edge of the previous bottom plate.
3. The roof greening method according to claim 1, wherein in step S30, the step of filling the planting substrate between adjacent grids is performed: the method further comprises the step of paving geotechnical cloth on the surface of the planting substrate, wherein hooks are arranged at the top ends of the flanges, and the geotechnical cloth is fixed on the hooks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069268.9A CN108377800B (en) | 2018-01-24 | 2018-01-24 | Grille, roof greening device and roof greening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069268.9A CN108377800B (en) | 2018-01-24 | 2018-01-24 | Grille, roof greening device and roof greening method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108377800A CN108377800A (en) | 2018-08-10 |
| CN108377800B true CN108377800B (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810069268.9A Active CN108377800B (en) | 2018-01-24 | 2018-01-24 | Grille, roof greening device and roof greening method |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113273410A (en) * | 2021-05-18 | 2021-08-20 | 北京城建集团有限责任公司 | Fixing structure and fixing method for slope roof planting soil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877600A (en) * | 2012-10-30 | 2013-01-16 | 辛军 | Roof flexible greening device |
| CN207969439U (en) * | 2018-01-24 | 2018-10-16 | 深圳风会云合生态环境有限公司 | A kind of grid and housetop greening device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006262712A (en) * | 2005-03-22 | 2006-10-05 | Kajima Corp | Greening structure and greening method |
| US7596906B2 (en) * | 2005-09-28 | 2009-10-06 | David Gold | Green roof system and methods |
| CN101084733A (en) * | 2006-06-07 | 2007-12-12 | 陈建 | Roof afforestation structure |
| CN201207837Y (en) * | 2008-06-25 | 2009-03-18 | 辛军 | Module type multifunctional roof greening device |
| EP2172096A1 (en) * | 2008-10-06 | 2010-04-07 | Toan Dang Vu | Roof with modular plant cover |
| JP4999873B2 (en) * | 2009-03-06 | 2012-08-15 | 輝人 大坪 | Planter support frame device |
| JP2012241411A (en) * | 2011-05-19 | 2012-12-10 | Tankatsu:Kk | Roof greening system |
| CN104100050B (en) * | 2013-04-03 | 2016-08-03 | 深圳风会云合生态环境有限公司 | A kind of can the roof greening watt of irrigation storage |
| CN204968688U (en) * | 2015-07-22 | 2016-01-20 | 宁波俊川市政园林工程有限公司 | Light -duty roof greening device |
| CN205063197U (en) * | 2015-10-28 | 2016-03-02 | 广州城建职业学院 | Novel roof greening structure that can save rainwater |
| CN205389683U (en) * | 2016-02-02 | 2016-07-27 | 广西进联德环保工程有限公司 | Building roof afforestation earth ecological isolation system |
-
2018
- 2018-01-24 CN CN201810069268.9A patent/CN108377800B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877600A (en) * | 2012-10-30 | 2013-01-16 | 辛军 | Roof flexible greening device |
| CN207969439U (en) * | 2018-01-24 | 2018-10-16 | 深圳风会云合生态环境有限公司 | A kind of grid and housetop greening device |
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| CN108377800A (en) | 2018-08-10 |
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