CN114586568B - Roof greening system is built to room - Google Patents

Abstract

The utility model relates to a roof greening system is built in room, it includes a plurality of afforestation units of laying in the roof, afforestation unit is including the afforestation case that is the upper shed setting, from bottom to top set up in afforestation incasement hold drainage layer, filter layer and planting layer, hold drainage layer and be platelike structure, just hold drainage layer towards planting layer sunken shaping have a plurality of supporting parts that are used for doing the support to the filter layer, hold drainage layer undercut shaping has a plurality of retaining parts that are used for retaining, the supporting part is provided with the drainage structures who is used for discharging water to afforestation case, adjacent the clearance of afforestation case is provided with the water drainage mechanism that is used for with the afforestation incasement water drainage. The application can improve the rainwater utilization rate of the greening system of the existing building, and simultaneously, the roof construction greening system of the existing building is relatively convenient.

Description

Roof greening system is built to room

Technical Field

The application relates to the field of building greening technology, in particular to a roof greening system for building.

Background

Along with the requirements of increasing living conditions and urban greening, greening construction is often carried out on roofs. Roof greening is mainly carried out on roofs, terraces, ceilings, balconies or large artificial rockery mountain bodies of various ancient and modern buildings, structures, city walls, bridges (overpasses) and the like, so as to be used for planting trees and flowers.

The existing roof greening mostly adopts to lay a waterproof layer on a roof, after taking waterproof measures on the roof, lay a planting soil layer on the roof for planting green plants and storing water, lay a pipeline in the planting soil layer for seepage and drainage, timely discharge water when the precipitation is relatively large, or irrigate the planting soil layer through the pipeline when drought, thereby reducing the influence on the growth of green plants due to water shortage.

However, in practical application, if a greening system is paved on a building roof which is not completed in construction, a waterproof layer is constructed only when the roof is constructed, and then planting soil and pipelines are paved; however, when the greening system is needed to be rebuilt on the roof of the existing building, the waterproof performance of the roof of the existing building is different from the waterproof performance required by paving the greening system to a certain extent; at this time, after the waterproof layer is paved on the roof, mortar or concrete is adopted to pave the cushion layer, so that the possibility of roof water seepage caused by the arrangement of the roof greening system is reduced, the greening transformation of the roof of the existing building is relatively inconvenient, in the actual use process, the water storage and drainage performance of the planting soil layer is relatively poor, and the utilization rate of rainwater is relatively low.

Disclosure of Invention

In order to improve the rainwater utilization rate of the greening system of the existing building, the roof greening system is constructed on the roof of the existing building relatively conveniently.

The application provides a roof greening system is built to room adopts following technical scheme:

the utility model provides a roof greening system is built to room, includes a plurality of afforestation units that lay in the roof, afforestation unit is including the afforestation case that is the upper shed setting, from bottom to top set up in the afforestation incasement hold drainage layer, filter layer and planting layer, hold drainage layer and be platelike structure, just hold drainage layer towards planting layer sunken shaping have a plurality of supporting parts that are used for doing the support to the filter layer, hold drainage layer undercut shaping has a plurality of retaining parts that are used for retaining, the supporting part is provided with the drainage structures who is used for discharging water to the afforestation case, adjacent the clearance of afforestation case is provided with the water drainage mechanism who is used for with the afforestation incasement water drainage.

By adopting the technical scheme, when in construction, a plurality of greening boxes are only required to be placed on a roof, then a water storage and drainage layer, a filter layer and a planting layer are sequentially paved in the greening boxes, and then green plants are planted on the planting layer, so that the roof of the existing building is not required to be damaged relatively greatly, rainwater can be isolated through the greening boxes, rainwater directly accumulated on the roof is reduced, and the influence of rainwater infiltration on roof water seepage is reduced; meanwhile, when the device is used, the water storage part can collect rainwater, and meanwhile, the filter layer and the planting layer are prevented from being directly soaked in the rainwater, so that the influence on green planting caused by overlarge humidity in the planting layer is reduced, meanwhile, the rainwater is positioned in the water storage part, and the humidity of the filter layer and the planting layer can be kept due to evaporation, permeation and the like, and moisture required by green planting growth is provided; in addition, when the rainwater is too much, the rainwater can also be discharged to the greening box through the drainage structure of the supporting part, and then the rainwater is discharged through the drainage mechanism, so that the possibility of soaking the planting layer by the rainwater due to the too large precipitation is reduced, and the construction greening box and the like which are relatively convenient and fast are realized while the rainwater utilization rate is optimized, and the damage to the roof of the existing building is reduced.

Optionally, a supporting layer for separating the water storage and drainage layer and the filtering layer is arranged between the water storage and drainage layer and the filtering layer, and the filtering layer is formed by paving gravel with gradually increased grain size from bottom to top.

By adopting the technical scheme, the supporting part can support the supporting layer, so that the possibility of collapse of the filtering layer caused by subsequent maintenance of the planting layer is reduced, and in addition, the integrity of the filtering layer can be maintained due to the gravel with relatively large grain size at the bottom of the filtering layer; meanwhile, the filter layer can filter rainwater through gravel with sequentially increased grain sizes from top to bottom, and the reverse osmosis caused by excessive rainwater in the water storage part is reduced while the content of rainwater impurities in the water storage part is effectively reduced.

Optionally, the supporting layer includes the supporting screen who sets up in a plurality of supporting part tops and is used for retaining water retaining board, the supporting screen is frame-like structure and top and bottom are net platy structure, the retaining board is located the inside of supporting screen.

By adopting the technical scheme, the supporting net plate can support and protect the water storage plate and can pass through rainwater; in addition, the water storage plate can absorb partial rainwater, so that the possibility of occurrence of insufficient water in the planting soil layer caused by the filter layer is reduced.

Optionally, the support otter board is provided with the diversion spare that is used for introducing the water in the water storage portion to the planting layer, the diversion spare includes the diversion support bar of fixed connection in the support otter board and the diversion strip of overcoat in the diversion support bar, the upper and lower extreme of diversion strip stretches into water storage portion and planting in situ respectively, the diversion support bar stretches into planting in situ, just the diversion support bar is for adopting meeting water softening material or degradation material to make.

By adopting the technical scheme, when the rainwater is relatively less, the rainwater in the water storage part can permeate into the planting layer through the water diversion strips, and the water diversion support strips can support the upper ends of the water diversion strips while keeping the humidity in the planting layer, so that the possibility that the water diversion strips cannot extend into the planting layer due to the construction of the filter layer and the planting soil layer is reduced; when the soil-turning device is used, the water-guiding support bars are softened or degraded due to contact with moisture, so that the influence of the water-guiding support bars on maintenance such as soil turning of later planting layers is reduced.

Optionally, the drainage structure includes the drainage dodge groove and a plurality of drain holes of seting up in the cell wall of drainage dodge groove depressed part of inwards sunken shaping by supporting part.

Through adopting above-mentioned technical scheme, the drainage dodges the groove and can reduce the rainwater that is discharged from planting layer and filter layer and directly discharges to the possibility of afforestation incasement through the wash port to make the rainwater can be prior enter into the water storage portion after, just can discharge to the afforestation incasement through the wash port after the water storage portion rainwater is full.

Optionally, the vertical cross-section of afforestation case is isosceles trapezoid and is the big end opening setting, the lateral wall of afforestation case is fixed and the intercommunication has the afforestation drain pipe that is used for the drainage, drainage mechanism is including setting up in the wash pipe in clearance between the adjacent afforestation case, a plurality of connecting pipes and the fixed water drainage fixed plate of fixed connection in wash pipe bottom of connecting in the wash pipe, water drainage fixed plate fixed connection is in the roof, the connecting pipe is provided with the drainage connecting piece that is used for connecting the afforestation drain pipe.

By adopting the technical scheme, the isosceles trapezoid greening box can improve the capability of bearing external load and reduce the possibility of deformation of the greening box caused by the fact that a person stands on a planting layer; meanwhile, the isosceles trapezoid greening boxes can form a space for installing a greening drain pipe, a drainage pipe and a connecting pipe in a gap between two adjacent greening boxes; in addition, because the greening box is used for isolating the roof and the rainwater of the existing building, the greening box is positioned and fixed through the drainage fixing plate, and the greening box can be fixed under the premise that the greening box is not required to be damaged, so that the damage of the roof of the existing building is further reduced, and meanwhile, the load born by the greening box can be partially transmitted to other adjacent greening boxes, and the stability of the greening box in use is further optimized.

Optionally, the drainage connecting piece includes drainage connecting pipe and drainage go-between, the drainage go-between inlays the inner wall of locating the drainage connecting pipe, the drainage go-between is for adopting the elastic membrane to make and its inside shaping has annular cavity, the inside packing of drainage go-between has the sealant, drainage connecting pipe overcoat and threaded connection are in connecting pipe or afforestation drain pipe.

Through adopting above-mentioned technical scheme, when the installation, only need rotate the drainage connecting pipe to destroy the drainage connecting ring through axial displacement's drainage connecting pipe, make the sealed clearance that glues in the drainage connecting ring and the membrane structure after destroying lie in between drainage connecting pipe and the clearance between drainage connecting pipe and the afforestation drain pipe, thereby need not additionally lay sealed glue and sealing strip when setting up drainage mechanism, when reaching the effect of optimizing connection stability and leakproofness between afforestation drain pipe and the connecting pipe, the construction of being convenient for.

Optionally, the inner wall of drainage connecting pipe has seted up the drainage annular, the drainage go-between sets up in the drainage annular, just the drainage annular is kept away from the outer wall of drainage pipe and afforestation drain pipe opposite end one side and is the slope setting.

Through adopting above-mentioned technical scheme, the outer wall that drain pipe and afforestation drain pipe are kept away from to the drain ring groove is the slope setting in opposite end one side, can pressfitting and guide the drainage go-between to reduce the drainage go-between and follow the possibility that drainage connecting pipe axially slided, optimize the reliability of construction.

Optionally, a fixing piece for connecting the edges of the two openings is arranged between two adjacent greening boxes.

Through adopting above-mentioned technical scheme, the mounting is adjacent two border fixed connection of greening case to increase the wholeness between a plurality of greening cases, and reduce the possibility that the border of greening case takes place to warp because of bearing the load.

Optionally, be equipped with between two adjacent greening casees of mounting not be equipped with the walk way, walk the way including the walking frame of placing on the roof, fixed connection in walking manger plate at walking frame top and fixed connection in the walking rack at walking manger plate top, the both sides border of walking manger plate is buckled downwards and is set up, the kink of walking manger plate is set up and fixed connection in the inboard at two adjacent greening case opening borders.

Through adopting above-mentioned technical scheme, walking rack can be used for walking to reduce when ornamental or maintenance produces the possibility of damage to the greening case, can also be with the rainwater drainage to leading-in to the greening incasement behind the walking breakwater surface when raining, can do the support to the border of walking way both sides greening case through the walking rack in addition.

In summary, the present application includes at least one of the following beneficial technical effects:

when in construction, the greening boxes are only required to be placed on the roof, then after the greening drain pipes and the connecting pipes between two adjacent greening boxes are connected through the drain connecting pipes, a water storage and drainage layer, a filter layer and a planting layer are sequentially paved in the greening boxes, then green plants are planted on the planting layer, relatively large damage to the roof of the existing building is not required, rainwater can be isolated through the greening boxes, rainwater directly accumulated on the roof is reduced, and the influence of rainwater infiltration on the roof is reduced; meanwhile, when the device is used, the water storage part can collect rainwater, and meanwhile, the filter layer and the planting layer are prevented from being directly soaked in the rainwater, so that the influence on green planting caused by overlarge humidity in the planting layer is reduced, meanwhile, the rainwater is positioned in the water storage part, and the humidity of the filter layer and the planting layer can be kept due to evaporation, permeation and the like, and moisture required by green planting growth is provided; in addition, when the rainwater is too much, the rainwater can also be discharged to the greening box through the drainage structure of the supporting part, and then the rainwater is discharged through the drainage mechanism, so that the possibility of soaking the planting layer by the rainwater due to the too large precipitation is reduced, and the construction greening box and the like which are relatively convenient and fast are realized while the rainwater utilization rate is optimized, and the damage to the roof of the existing building is reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present application.

FIG. 2 is a schematic cross-sectional view of the structure of line A-A in FIG. 1.

Fig. 3 is an enlarged schematic view of the portion B in fig. 2.

FIG. 4 is a schematic cross-sectional view of a drain connector and a greening drain in an embodiment of the present application.

Fig. 5 is an enlarged schematic view of the portion C in fig. 1.

Reference numerals illustrate: 1. a roof; 2. a greening unit; 21. a greening box; 211. greening drainage pipes; 22. a water storage and drainage layer; 221. a support part; 222. a water storage section; 223. a support bar; 23. a filter layer; 24. planting a layer; 25. a drainage structure; 251. a drainage avoiding groove; 252. a drain hole; 3. a drainage mechanism; 31. a drain pipe; 32. a connecting pipe; 33. a drainage fixing plate; 34. a drain connector; 341. a drainage connecting pipe; 342. a drain connection ring; 343. a water discharge ring groove; 4. a support layer; 41. a support screen; 411. a support rod; 42. a water storage plate; 43. a water guiding member; 431. a water diversion support bar; 432. a water guiding strip; 433. the diversion support screen plate; 6. a fixing member; 61. a fixing frame; 62. a fixing plate; 63. covering the plate; 631. a connecting groove; 7. a walk; 71. a walking frame; 72. a walking water baffle; 73. and (5) walking the net rack.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a roof greening system for building. Referring to fig. 1 and 2, a roof greening system for building a house includes a plurality of greening units 2 laid on a roof 1. The greening unit 2 comprises a greening box 21, a water storage and drainage layer 22, a filtering layer 23 and a planting layer 24, wherein the greening box 21 is arranged with an upper opening, the vertical section of the greening box is isosceles trapezoid, and the greening box 21 is arranged with a large-end upper opening. The water storage and drainage layer 22, the filter layer 23 and the planting layer 24 are sequentially laid in the greening box 21 from bottom to top. The planting layer 24 is formed by laying planting soil above the filtering layer 23, so as to be used for planting green plants. The filter layer 23 is formed by paving gravel above the water storage and drainage layer 22, and the grain size of the gravel of the filter layer 23 is sequentially increased from bottom to top so as to be used for filtering rainwater permeated from the planting layer 24, and the content of impurities in the rainwater entering the water storage and drainage layer 22 is reduced.

Referring to fig. 2 and 3, the water storage and drainage layer 22 has a plate-like structure, and a plurality of support portions 221 are formed in a recessed manner in the water storage and drainage layer 22 toward the planting layer 24, and a plurality of water storage portions 222 are formed in a recessed manner in the water storage and drainage layer 22 toward the bottom of the greening tank 21. The supporting part 221 and the water storage part 222 are of taper pipe structures, and the small ends of the supporting part and the water storage part are far away from each other.

The support portion 221 is provided with a drain structure 25 for draining water into the greening tanks 21, and a drain mechanism 3 for draining water in the greening tanks 21 is provided between adjacent greening tanks 21.

In actual use, the supporting part 221 can support the filter layer 23, and rainwater permeated from the planting layer 24 can be collected by the water storage part 222 after being filtered by the filter layer 23, when the rainwater is excessive, the excessive rainwater can be discharged to the greening box 21 through the drainage structure 25 and then discharged through the drainage mechanism 3; meanwhile, rainwater accumulated in the water storage part 222 can be used for supplying water to the filter layer 23 and the planting layer 24, and the humidity of the planting layer 24 is kept, so that necessary moisture is provided for green planting growth; in addition, the filter layer 23 can effectively reduce the impurity of the rainwater entering the water storage part 222, and reduce the possibility that the rainwater cannot be drained when too much rainwater is caused by the impurity blocking drainage structure 25; the supporting part 221 is positioned above the water storage part 222, so that during actual use, the water storage part 222 can deposit partial impurities remained in rainwater, the possibility that the drainage structure 25 is blocked is further reduced, and the stability during use is optimized; thereby improving the rainwater utilization rate and facilitating the greening treatment of the roof 1 of the existing building.

Finally, channels for accommodating the rainwater flowing in the greening box 21 can be formed between the different water storage parts 222, so that the rainwater flowing in the greening box 21 due to the supporting parts 221 and the water storage parts 222 is reduced, and the humidity in the relative planting layer 24 is kept while the rainwater is utilized relatively sufficiently; in addition, the roof 1 of the existing building can be greened and rebuilt relatively conveniently.

Referring to fig. 2 and 3, the drainage structure 25 includes a drainage avoidance groove 251 and a plurality of drainage holes 252 formed in a groove wall of the drainage avoidance groove 251, the drainage avoidance groove 251 is formed by recessing an outer wall of a top of the support portion 221 toward a central side of the support portion 221, the drainage avoidance groove 251 is annular and is arranged with the support portion 221 along a central axis, and the drainage holes 252 are located in a groove wall of a recessed portion of the drainage avoidance groove 251. When in use, the drainage avoiding groove 251 can effectively reduce the possibility that rainwater permeated from the filter layer 23 is directly drained through the drainage hole 252; meanwhile, when the water level is at the drain hole 252 due to excessive rainwater in the water storage part 222, the rainwater can be discharged into the greening tank 21 through the drain hole 252.

And because hold drainage layer 22 still is used for supporting filter layer 23 and planting layer 24, in order to reduce because of offering the not enough of supporting strength that the wash port 252 leads to, drainage dodges the groove 251 and is provided with a plurality of support bars 223 that encircle the central axis setting of supporting part 221, the both ends of support bar 223 are fixed connection respectively in the upper and lower opening border of drainage dodge groove 251 to be used for auxiliary support.

Referring to fig. 2 and 3, in addition, the filter layer 23 is easily collapsed and the water storage part 222 are easily caused by only supporting the gravel with a large particle size at the lower part of the filter layer 23, so that rainwater is directly contacted with the filter layer 23 while the utilization of the rainwater is influenced, and excessive humidity in the planting layer 24 is easily caused. In order to improve the problems, a supporting layer 4 for separating the water storage and drainage layer 22 and the filter layer 23 is arranged between the water storage and drainage layer 22 and the filter layer 23, and the filter layer 23 and the planting layer 24 are supported at the same time, so that the possibility of collapse of the filter layer 23 and the planting layer 24 during subsequent soil turning or maintenance is reduced.

The supporting layer 4 includes a supporting mesh plate 41 and a water storage plate 42, which are erected on the plurality of supporting portions 221, the supporting mesh plate 41 is in a frame-like structure, and the top and the bottom of the supporting mesh plate 41 are in a grid plate-like structure, so that rainwater can be discharged into the water storage portion 222 while the supporting mesh plate is used for supporting.

Referring to fig. 2 and 3, the water storage plate 42 is stuck to the inner side of the support screen 41 to be protected by the support screen 41, and at the same time, a water guide 43 for guiding rainwater in the water storage part 222 to the water storage plate 42 and the planting layer 24 is provided in the water storage plate 42. The water storage plate 42 is made of water absorbing material, such as sponge, absorbent cotton, and silica gel.

The water diversion member 43 comprises a water diversion supporting bar 431 and a water diversion bar 432, a plurality of supporting bars 411 are arranged in the supporting screen 41, and two ends of the supporting bars 411 are fixedly connected to the top and the bottom of the supporting screen 41 respectively. The water diversion support bars 431 are fixedly connected with the water diversion support screen 433, the water diversion support screen 433 is fixedly connected with the plurality of support bars 411, and the water diversion support bars 431 are fixedly connected with the water diversion support screen 433. The water diversion support bars 431 are inserted into the upper ends of the water diversion bars 432, the upper ends of the water diversion bars 432 penetrate through the filter layer 23 and extend into the planting layer 24, and the lower ends of the water diversion bars 432 penetrate through the support screen 41 and extend into the water storage portion 222 so as to be used for introducing rainwater in the water storage portion 222 into the filter layer 23, the water storage plate 42 and the planting layer 24, so that the humidity in the planting layer 24 is kept. The water diversion bars 432 are made of water absorbing materials, such as cotton threads and fiber ropes woven by a plurality of fiber threads.

Specifically, the water diversion support mesh plates 433 and the water diversion support bars 431 are made of water softening materials, degradation materials or soluble solids, such as starch-based polymers and degradation plastics, so that after the greening box 21 is paved, when the filter layer 23 and the planting layer 24 are paved, the water diversion support mesh plates 431 and the water diversion support mesh plates 433 can support the upper ends of the water diversion bars 432, the water diversion bars 432 can be kept in a relatively vertical state when the filter layer 23 and the planting layer 24 are paved, and the influence of deflection of the water diversion bars 432 caused by gravel of the filter layer 23 and planting soil of the planting layer 24 on the water diversion effect is reduced; meanwhile, after the laying is finished, the water diversion support bars 431 and the water diversion support screen 433 can be degraded or dissolved by the water in the planting layer 24 and the filter layer 23, so that the interference generated when the planting layer 24 is turned over or other green plants are planted again in the follow-up process is reduced; in addition, the substances produced after degradation of starch-based polymers and the like can also be used to provide nutrients for the growth of green plants.

Referring to fig. 3 and 4, further, in order to drain rainwater in the greening tank 21, a greening drain pipe 211 for draining is fixedly connected to a side wall of the greening tank 21, and the greening drain pipe 211 is communicated with a bottom of the greening tank 21. The drainage mechanism 3 includes a plurality of drainage pipes 31 provided in gaps between adjacent greening tanks 21, a plurality of connection pipes 32, and a drainage fixing plate 33 fixedly connected to the bottom of the drainage pipe 31, the connection pipes 32 being fixed to and communicating with the drainage pipe 31. A drainage connector 34 for rigidly connecting the connection pipe 32 and the greening drainage pipe 211 is provided between the connection pipe and the greening drainage pipe, and the drainage fixing plate 33 is fixedly connected to the roof 1.

In use, the drainage fixing plate 33 can fixedly connect the drainage pipe 31 to the roof 1, and simultaneously fix the greening box 21 through the drainage connecting piece 34 and the greening drainage pipe 211, without directly fixedly connecting the greening box 21 to the roof 1, so as to reduce damage to the greening box 21.

Referring to fig. 3 and 4, specifically, the drain connector 34 includes a drain connecting pipe 341 and a drain connecting ring 342, the inner wall of the drain connecting pipe 341 is provided with a drain ring groove 343 along the central axis, the drain connecting ring 342 is clamped in the drain ring groove 343, and the drain connecting ring 342 and the drain connecting pipe 341 are provided along the central axis. The drain connection pipe 341 is sleeved with a thread and is connected to the drain pipe 31 or the greening drain pipe 211, and in the embodiment of the present application, the drain connection pipe 341 is sleeved with a thread and is connected to the greening drain pipe 211.

The drain connector 342 is made of an elastic membrane, such as a plastic membrane. The inner wall of the drain connection ring 342 is formed with a cavity and the cavity is filled with sealant. The drain ring groove 343 is inclined away from the groove wall of the greening drain pipe 211 and the opposite end side of the connecting pipe 32, and the groove wall of the drain ring groove 343 is inclined and extends from the bottom wall of the drain ring groove 343 towards the direction away from the connecting pipe 32, so that the drain connecting ring 342 is broken. Wherein the outer wall of the connection pipe 32 is provided with threads for engaging the drain connection pipe 341 for connecting the drain connection pipe 341.

When the greening drain 211 is connected to the connection pipe 32, only the drainage connection pipe 341 is required to be rotated, and at this time, the groove wall of the drainage groove 343 will crush the drainage connection ring 342 and adhere the sealant to the inner wall of the drainage connection pipe 341, the outer wall of the greening drain 211 and the outer wall of the connection pipe 32; meanwhile, in the process that the drainage connecting pipe 341 is in threaded connection with the connecting pipe 32, the broken film of the drainage connecting ring 342 can be filled in the gap between the greening drain pipe 211 and the drainage connecting pipe 341 and the gap between the connecting pipe 32 and the drainage connecting pipe 341, so that after the sealant is solidified, the connecting pipe 32 and the greening drain pipe 211 are fixedly connected through the drainage connecting pipe 341, the later-stage coating of sealant is not needed, and the construction is convenient; the flexible connection can also be made according to the actual position requirement by the flexible bending of the greening drain pipe 211 and the connection pipe 32 and the expansion and contraction of the drainage connection pipe 341 so as to adapt to the positions of the greening tank 21 and the drainage pipe 31.

Referring to fig. 5, since the greening tanks 21 are placed on the roof 1 of the existing building, a fixing member 6 for connecting the edges of the openings of the two adjacent greening tanks 21 is provided between a part of the adjacent greening tanks 21 in order to further reduce the influence of rainwater leaking from the gaps between the adjacent greening tanks 21 on the roof 1.

Specifically, the fixing member 6 includes a fixing frame 61 and a fixing plate 62 fixedly connected to the top of the fixing frame 61, the fixing frame 61 is fixedly connected to the roof 1 through an anchor bolt, and the fixing plate 62 is bent downwards towards the edges of two adjacent greening tanks 21 and is fixedly connected to the inner wall of the greening tank 21, so that rainwater between the two adjacent greening tanks 21 is guided into the greening tank 21 while the edges of the greening tanks 21 are supported. In addition, the joint parts of the adjacent four greening tanks 21 are provided with cover plates 63, four corners of each cover plate 63 are bent towards the inner sides of the adjacent four greening tanks 21 to form connecting grooves 631, and parts corresponding to the connecting grooves 631 on the cover plates 63 are erected at the corner parts of the greening tanks 21 so as to guide rainwater at the joint parts of the adjacent four greening tanks 21.

Referring to fig. 1 and 2, a gap between adjacent greening tanks 21, which are not provided with a fixing member 6, is provided with a walk path 7 for later maintenance of green plants or walking. The walk 7 includes a walking frame 71 placed on the roof 1, a walking water baffle 72 fixedly connected to the top of the walking frame 71, and a walking net frame 73 fixedly connected to the top of the walking water baffle 72. The walking frame 71 is fixedly connected to a roof, and edges of two sides of the walking water baffle 72 are respectively erected and fixedly connected to inner walls of the opening edges of two adjacent greening boxes 21 so as to be used for supporting the edges of the greening boxes 21 while guiding rainwater in gaps of the greening boxes 21; further, the traveling rack 73 has a frame-like structure and a grid plate-like structure at the top thereof for traveling while reducing the possibility of water accumulation on the surface of the walk 7 due to rain.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (3)

1. A roof greening system is built to room, its characterized in that: the greening unit (2) comprises a plurality of greening units (2) paved on a roof (1), wherein each greening unit (2) comprises a greening box (21) which is arranged in an upper opening manner, a water storage and drainage layer (22), a filtering layer (23) and a planting layer (24) which are arranged in the greening box (21) from bottom to top, each water storage and drainage layer (22) is of a plate-shaped structure, a plurality of supporting parts (221) for supporting the filtering layer (23) are concavely formed towards the planting layer (24), a plurality of water storage parts (222) for storing water are concavely formed on each water storage and drainage layer (22), a drainage structure (25) for draining water into the greening box (21) is arranged on each supporting part (221), and a drainage mechanism (3) for draining water in the greening box (21) is arranged in a gap between every two adjacent greening boxes (21). A supporting layer (4) for separating the water storage and drainage layer (22) and the filter layer (23) is arranged between the water storage and drainage layer and the filter layer (23), and the filter layer (23) is formed by paving gravel with gradually increased grain size from bottom to top; the supporting layer (4) comprises a supporting screen plate (41) and a water storage plate (42) which are arranged at the top of the supporting parts (221), the supporting screen plate (41) is of a frame-shaped structure, the top and the bottom of the supporting screen plate are of a grid plate-shaped structure, and the water storage plate (42) is positioned in the supporting screen plate (41); the water diversion device comprises a support screen (41), a planting layer (24) and a water storage part (222), wherein the support screen (41) is provided with a water diversion piece (43) for introducing water in the water storage part (222) into the planting layer (24), the water diversion piece (43) comprises a water diversion support bar (431) fixedly connected with the support screen (41) and a water diversion bar (432) sleeved on the water diversion support bar (431), the upper end and the lower end of the water diversion bar (432) respectively extend into the water storage part (222) and the planting layer (24), and the water diversion support bar (431) extends into the planting layer (24); a plurality of support rods (411) are arranged in the support screen plate (41), and two ends of the support rods (411) are fixedly connected to the top and the bottom of the support screen plate (41) respectively; the water diversion support bars (431) are fixedly connected with the water diversion support screen plate (433), the water diversion support screen plate (433) is fixedly connected with the plurality of support bars (411), and the water diversion support bars (431) are fixedly connected with the water diversion support screen plate (433); the water diversion support bar (431) is inserted into the upper end of the water diversion bar (432), the upper end of the water diversion bar (432) penetrates through the filter layer (23) and stretches into the planting layer (24), and the lower end of the water diversion bar (432) penetrates through the support screen (41) and stretches into the water storage part (222) so as to be used for introducing rainwater in the water storage part (222) into the filter layer (23), the water storage plate (42) and the planting layer (24), so that the humidity in the planting layer (24) is kept; the water diversion strip (432) is made of water absorption materials; the drainage structure (25) comprises a drainage avoidance groove (251) formed by inwards sinking a supporting part (221) and a plurality of drainage holes (252) formed in the groove wall of the concave part of the drainage avoidance groove (251); the vertical cross section of the greening box (21) is isosceles trapezoid and is provided with a large end opening, a greening drain pipe (211) for draining is fixed and communicated on the side wall of the greening box (21), the drainage mechanism (3) comprises a drain pipe (31) arranged in a gap between adjacent greening boxes (21), a plurality of connecting pipes (32) fixed and communicated with the drain pipe (31) and a drainage fixing plate (33) fixedly connected with the bottom of the drain pipe (31), the drainage fixing plate (33) is fixedly connected with a roof (1), and a drainage connecting piece (34) for connecting the greening drain pipes (211) is arranged on the connecting pipes (32); the drainage connecting piece (34) comprises a drainage connecting pipe (341) and a drainage connecting ring (342), the drainage connecting ring (342) is embedded in the inner wall of the drainage connecting pipe (341), the drainage connecting ring (342) is made of an elastic film, an annular cavity is formed in the drainage connecting ring, sealing glue is filled in the drainage connecting ring (342), and the drainage connecting pipe (341) is sleeved outside and connected with the connecting pipe (32) or the greening drain pipe (211) in a threaded mode; the inner wall of drainage connecting pipe (341) has seted up drainage annular (343), drainage connecting ring (342) set up in drainage annular (343), just drainage annular (343) keep away from the outer wall of drain pipe (31) and afforestation drain pipe (211) opposite end one side and are the slope setting, just diversion support otter board (433) and diversion support strip (431) are all for adopting meeting water softening material, degradation material or solubility solid and make.

2. A roof greening system for a building according to claim 1, wherein: a fixing piece (6) for connecting the opening edges of two adjacent greening boxes (21) is arranged between the two adjacent greening boxes.

3. A roof greening system for a building according to claim 2, wherein: be equipped with between two adjacent greening casees (21) of mounting (6) do not be equipped with walk way (7), walk way (7) including place in walking frame (71) on roof (1), fixed connection in walking frame (71) top walk manger plate (72) and fixed connection in walking rack (73) at walking manger plate (72) top, the both sides border of walking manger plate (72) is buckled downwards and is set up, the kink of walking manger plate (72) is set up and fixed connection in the inboard at two adjacent greening casees (21) opening borders.