Prefabricated green building roof
By designing water storage tanks, water absorption plates, and drainage pipe systems on the roof of prefabricated green buildings, the problem of high demand for vegetation irrigation when rainwater is insufficient is solved, achieving efficient use of rainwater and stability of the roof structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN MINGTAIDA CONSTR CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-24
AI Technical Summary
Existing prefabricated green building roofs have high irrigation needs for vegetation when rainfall is insufficient, leading to increased water consumption.
Design a prefabricated green building roof structure, including a water storage tank, water-absorbing sheet, water-absorbing block and drainage pipe, to collect rainwater and transfer it to the soil layer to provide sufficient water for plants, while draining excess water through drainage pipe and connecting pipe to reduce the need for manual watering.
It improves rainwater utilization, reduces water consumption, prevents frame loosening, and enhances the roof's load-bearing capacity.
Smart Images
Figure CN224549506U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, and in particular to a prefabricated green building roof. Background Technology
[0002] Prefabricated green building roofs are a type of roof that integrates prefabricated building technology and green building concepts. They have the advantages of energy saving and environmental protection, high construction efficiency, and strong sustainability. They typically use resilient herbaceous vegetation to be planted flat on the roof greening structure layer. They are lightweight, have a wide range of applications, and are characterized by low maintenance and no irrigation. They can be kept in good condition with minimal maintenance.
[0003] A search revealed Chinese Patent Publication No. CN217905363U, which discloses a prefabricated green building roof, relating to the field of building structures. It includes a top plate and an installation plate. The installation plate has a recessed mounting groove in its center for mounting the top plate. The top plate includes a box with a top opening and an outer edge connected to the outside of the box opening. The box is located within the installation groove. The bottom plate of the box has a planting area and a spraying assembly for irrigating the planting area. A water collection port connecting the box and the installation groove is also provided on the bottom plate. A water guide is provided within the planting area to conduct water from the installation groove to the planting area. The water guide penetrates the bottom plate of the box and connects the planting area and the installation groove. This application, through the cooperation of the top plate, installation plate, and water guide, can collect and store rainwater and excess water sprayed by the spraying assembly, thus conserving water and reducing the workload of frequent spraying and irrigating of the planting area by construction workers. In times of insufficient rainfall, the irrigation demand for vegetation is high, increasing water consumption. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a prefabricated green building roof, which aims to improve the problem in the existing technology that when there is insufficient rainfall, the irrigation demand for vegetation is high, which will increase water consumption.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a prefabricated green building roof, including a roof surface, with support columns fixedly connected to the four corners of the outer wall of the roof surface, and a steel frame fixedly connected to the top of the support columns. A base surface is installed on the top wall of the roof surface, and a water storage tank is installed in the middle of the top wall of the base surface. Diversion plates are installed on the left and right sides of the water storage tank, and a diversion channel is opened on the outer wall of the diversion plate. Drainage pipes are connected to the four corners of the inner wall of the water storage tank. A water-absorbing sheet is fixedly connected to the top of the water-absorbing sheet, and multiple water-absorbing blocks are fixedly connected at equal intervals to the bottom of the water-absorbing sheet. A soil layer is fixedly connected to the top of the water-absorbing sheet. A second water storage tank is fixedly connected to the bottom of the first water storage tank. Multiple crossbeams are installed at equal intervals on the inner side of the steel frame. A fixing mechanism is installed at the connection between the crossbeams and the steel frame. The fixing mechanism is used to fix the crossbeams and the steel frame to prevent loosening and improve their stability.
[0006] The above technical solution works as follows: When it rains, rainwater flows along the drainage channel on the outer wall of the diversion plate into the first water storage tank, where it is collected. Once the first water storage tank is full, the water-absorbing block absorbs the water and transfers it to the water-absorbing plate. The top of the water-absorbing plate is the soil layer, and the water in the water-absorbing plate flows into the soil layer, providing sufficient moisture for the plants there. After the first water storage tank is full, any excess water flows through the drainage pipe to the second water storage tank and then through the connecting pipe to be discharged from the roof. This not only removes excess water but also improves rainwater utilization, eliminating the need for manual watering and reducing water consumption.
[0007] As a further description of the above technical solution: The fixing mechanism includes fixing plates, which are equidistantly installed on the top wall of the steel frame. Bolt 2 is threadedly connected to the middle of the top wall of the fixing plate. A gasket 1 is installed on the front bottom side of the fixing plate. Bolt 1 is threadedly connected to the front top side of the gasket 1 at equal intervals. A gasket 2 is installed on the rear bottom side of the fixing plate. Clamping plates are installed on the left and right sides of the fixing plate and the gasket 2. Bolt 3 is threadedly connected to the middle of the top wall of the clamping plate.
[0008] The above technical solution involves: distributing crossbeams equidistantly on the inner side of the steel frame; placing fixing plates on the top wall of the steel frame; screwing bolt two into the hole in the middle of fixing plate one to fix the crossbeams to the steel frame; placing shim one at the bottom of the fixing plate and screwing in bolt one; placing shim two at the junction of the fixing plate and the crossbeam; inserting the clamp; and screwing in bolt three to fix the fixing plate and shim two together, forming a stable connection, preventing the frame from loosening, and improving the roof's load-bearing capacity.
[0009] As a further description of the above technical solution: Multiple planting pits are equidistantly spaced on the top of the soil layer, and a vegetation layer is installed on top of the planting pits.
[0010] The above technical solution provides a stable growing position for plants, allowing roots to take root in the soil, supporting the above-ground parts of the plants, preventing them from falling over, and providing sufficient growing space for the roots to spread out and extend in all directions, so as to better absorb water, nutrients and oxygen.
[0011] As a further description of the above technical solution: Drainage channels are installed on both the left and right sides of the top wall of the base surface, and a grating plate is installed on the top of the drainage channels.
[0012] Through the above technical solution, the drainage channel can collect rainwater and guide it to the drainage pipe, preventing rainwater from accumulating on the roof, thereby preventing roof leaks and water accumulation from damaging the roof structure.
[0013] As a further description of the above technical solution: The top wall of the grating plate has multiple drainage holes at equal intervals.
[0014] The above technical solution involves a drainage hole located on the roof of the building to drain water from the roof, preventing debris from entering the drainage system while allowing water to pass through smoothly.
[0015] As a further description of the above technical solution: A drain pipe is connected to the bottom front side of the drainage trough.
[0016] The above technical solution enables drainage pipes to be specifically designed for collecting and discharging rainwater.
[0017] As a further description of the above technical solution: The outer wall of the second water storage tank is connected to connecting pipes on both the left and right ends of the front side.
[0018] With the above technical solution, after the rainwater in the first water storage tank is full, the excess water will flow to the second water storage tank through the drainage pipe.
[0019] As a further description of the above technical solution: The end of the connecting pipe is connected to the lower middle part of the outer wall of the drain pipe.
[0020] Through the above technical solution: the water in the water storage tank flows to the drain pipe through the connecting pipe, and the drain pipe discharges the water from the roof.
[0021] This utility model has the following beneficial effects: 1. In this utility model, when it rains, rainwater flows along the drainage channel on the outer wall of the diversion plate into the first water storage tank, where the rainwater is collected. After the first water storage tank is full, the water-absorbing block will absorb the water and transfer the water to the water-absorbing plate. The top of the water-absorbing plate is the soil layer, and the water in the water-absorbing plate will flow to the soil layer, providing sufficient water for the plants in the soil layer. After the first water storage tank is full, the excess water will flow through the drainage pipe to the second water storage tank, and then be discharged from the roof through the connecting pipe. This not only removes excess water, but also improves the rainwater utilization rate, eliminates the need for manual watering, and reduces water consumption.
[0022] 2. In this utility model, the crossbeams are evenly distributed on the inner side of the steel frame. The fixing plate is placed on the top wall of the steel frame. Bolt 2 is screwed into the hole in the middle of fixing plate 1 to fix the crossbeam and the steel frame together. Then, shim 1 is placed at the bottom of the fixing plate and bolt 1 is screwed in. Then, shim 2 is placed at the junction of the fixing plate and the crossbeam, clamping in the clamping plate and bolt 3 is screwed in to fix the fixing plate and shim 2 together, forming a stable connection, preventing the frame from loosening and improving the roof load-bearing capacity. Attached Figure Description
[0023] Figure 1 This is a perspective view of a prefabricated green building roof proposed in this utility model; Figure 2 This is a front view of a prefabricated green building roof proposed in this utility model; Figure 3 This is a partial structural breakdown diagram of a prefabricated green building roof proposed in this utility model; Figure 4 This is a schematic diagram of a fixing mechanism for a prefabricated green building roof proposed in this utility model; Figure 5 This utility model proposes a prefabricated green building roof. Figure 4 Enlarged view of point A in the middle.
[0024] Legend: 1. Roof; 2. Fixing mechanism; 201. Fixing plate; 202. Gasket 1; 203. Bolt 1; 204. Bolt 2; 205. Gasket 2; 206. Bolt 3; 207. Clamping plate; 3. Base surface; 4. Drainage hole; 5. Grating plate; 6. Drainage channel; 7. Diversion plate; 8. Drainage channel; 9. Water storage tank 1; 10. Water-absorbing plate; 11. Soil layer; 12. Vegetation layer; 13. Support column; 14. Steel frame; 15. Planting pit; 16. Water-absorbing block; 17. Drainage pipe; 18. Drainage pipe; 19. Connecting pipe; 20. Water storage tank 2; 21. Crossbeam. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a prefabricated green building roof, including a roof 1. Support columns 13 are fixedly connected to the four corners of the outer wall of the roof 1. A steel frame 14 is fixedly connected to the top of the support columns 13. A base surface 3 is installed on the top wall of the roof 1. A water storage tank 9 is installed in the middle of the top wall of the base surface 3. Diversion plates 7 are installed on both the left and right sides of the water storage tank 9. Drainage channels 8 are opened on the outer wall of the diversion plates 7. Drainage pipes 17 are connected to the four corners of the inner wall of the water storage tank 9. A water-absorbing sheet 10 is fixedly connected to the top of the water storage tank 9. Multiple water-absorbing blocks 16 are fixedly connected at equal intervals to the bottom of the water-absorbing sheet 10. A soil layer 11 is fixedly connected to the top of the 0, and a water storage tank 20 is fixedly connected to the bottom of the first water storage tank 9. Multiple crossbeams 21 are installed at equal intervals on the inner side of the steel frame 14. A fixing mechanism 2 is installed at the connection between the crossbeams 21 and the steel frame 14 to fix the crossbeams 21 and the steel frame 14, prevent loosening, and improve its stability. Multiple planting pits 15 are equally spaced on the top of the soil layer 11. A vegetation layer 12 is installed on the top of the planting pits 15. The planting pits 15 provide a stable growth position for the plants, allowing the roots to take root in the soil layer 11, supporting the above-ground parts of the plants, preventing them from falling over, and providing sufficient growth space for the plant roots. This allows the root system to spread out and extend in all directions, better absorbing water, nutrients, and oxygen. During rainfall, rainwater flows smoothly along the outer side of the diversion plate 7 and its carefully designed drainage channels 8 to the water storage tank 9. This process effectively collects rainwater. Once the water storage tank 9 is full of rainwater, the water-absorbing block 16 begins to absorb the water. The function of the water-absorbing block 16 is to transfer the water to the water-absorbing plate 10, and the upper end of the water-absorbing plate 10 is in direct contact with the soil layer 11. Therefore, the water in the water-absorbing plate 10 can smoothly penetrate into the soil layer 11, providing the necessary water supply for the plants growing there. When the water storage tank 9 is full... When the rainwater reaches saturation, any excess water will flow through the drainage pipe 17 to the water storage tank 20. Subsequently, this excess water will be discharged from the roof through the connecting pipe 19. This method can not only remove excess water, but also improve the utilization rate of rainwater. Through this mechanism, the need for artificial watering can be avoided, thereby greatly reducing the consumption of water resources. Drainage channels 6 are installed on both the left and right sides of the top wall of the base surface 3. The top of the drainage channel 6 is equipped with a grid plate 5. The drainage channel 6 can collect rainwater and guide it to the drainage pipe 18 to prevent rainwater from accumulating on the roof, thereby preventing roof leakage and water accumulation from damaging the roof structure. Specifically, when it rains, rainwater flows along the drainage channel 8 on the outer wall of the diversion plate 7 into the water storage tank 9, where it is collected. Once the water storage tank 9 is full, the water-absorbing block 16 absorbs the water and transfers it to the water-absorbing plate 10. The top of the water-absorbing plate 10 is the soil layer 11, and the water in the water-absorbing plate 10 flows to the soil layer 11, providing sufficient moisture for the plants in the soil layer 11. After the rainwater storage tank 9 is full, the excess water flows through the drainage pipe 17 to the water storage tank 20, and then is discharged from the roof through the connecting pipe 19. This not only removes excess water but also improves the rainwater utilization rate, eliminating the need for manual watering and reducing water consumption.
[0027] Reference Figure 3 , Figure 4 and Figure 5 The fixing mechanism 2 includes fixing plates 201, which are equidistantly installed on the top wall of the steel frame 14. Bolt 204 is threaded into the center of the top wall of the fixing plate 201. A washer 202 is installed on the front bottom side of the fixing plate 201, and bolt 203 is threaded into the front top side of the washer 202 at equal intervals. A washer 205 is installed on the rear bottom side of the fixing plate 201. Clamping plates 207 are installed on both the left and right sides of the fixing plate 201 and the washer 205. Bolt 206 is threaded into the center of the top wall of the clamping plate 207. To ensure structural stability, the crossbeams 21 are evenly distributed inside the steel frame 14. The fixing plates 201 are placed on the top wall of the steel frame 14 and then screwed into the fixing mechanism 204. In the center hole of fixing plate 201, the crossbeam 21 and the steel frame 14 are firmly connected. Then, shim 202 is placed at the bottom of fixing plate 201. By tightening bolt 203, the stability of the connection is further enhanced. To ensure a more stable connection, shim 205 is placed at the joint between fixing plate 201 and crossbeam 21. Then, clamp 207 is inserted and fixed to fixing plate 201 and shim 205 by tightening bolt 3 206. This series of operations constructs an extremely stable connection structure, effectively preventing the frame from loosening, thereby improving the load-bearing capacity of the roof. Multiple drainage holes 4 are equidistantly opened on the top wall of the grating plate 5. The bottom front side of the drainage channel 6 is connected to the drainage pipe 18. Specifically, the crossbeams 21 are evenly distributed on the inner side of the steel frame 14. The fixing plate 201 is placed on the top wall of the steel frame 14. The bolt 204 is screwed into the hole in the middle of the fixing plate 201 to fix the crossbeams 21 and the steel frame 14 together. Then, the shim 202 is placed at the bottom of the fixing plate 201 and the bolt 203 is screwed in. Then, the shim 205 is placed at the junction of the fixing plate 201 and the crossbeam 21. The clamp 207 is inserted and the bolt 306 is screwed in to fix the fixing plate 201 and the shim 205 together, forming a stable connection, preventing the frame from loosening and improving the roof load-bearing capacity.
[0028] Reference Figure 1 , Figure 2 and Figure 3 The left and right ends of the front side of the outer wall of the water storage tank 20 are connected to the connecting pipe 19, and the end of the connecting pipe 19 is connected to the lower middle part of the outer wall of the drain pipe 18. Specifically, after the rainwater in the first water storage tank 9 is full, the excess water will flow through the drainage pipe 17 to the second water storage tank 20, and then through the connecting pipe 19 to the drain pipe 18. The drain pipe 18 will drain the water from the roof and remove the excess water.
[0029] Working principle: When it rains, rainwater flows smoothly along the outer wall of the diversion plate 7 and its designed drainage channel 8 to the water storage tank 9. This process effectively collects rainwater. When the water storage tank 9 is full of rainwater, the water-absorbing block 16 absorbs the water. The function of the water-absorbing block 16 is to transfer the water to the water-absorbing plate 10. The top of the water-absorbing plate 10 directly contacts the soil layer 11. In this way, the water in the water-absorbing plate 10 can flow smoothly to the soil layer 11 to provide the necessary water supply for the plants growing there. When the rainwater in the water storage tank 9 reaches full capacity, any excess water will flow through the drainage pipe 17 to the water storage tank 20. Subsequently, this excess water will be discharged from the roof through the connecting pipe 19. This can not only remove excess water, but also improve the utilization rate of rainwater. In this way, the need for artificial watering can be avoided, thereby greatly reducing the consumption of water resources. To ensure structural stability, crossbeams 21 are evenly distributed on the inner side of the steel frame 14. Fixing plates 201 are placed on the top wall of the steel frame 14. Then, by screwing bolts 204 into the holes in the middle of fixing plates 201, the crossbeams 21 and the steel frame 14 are firmly connected together. Next, shims 202 are placed at the bottom of fixing plates 201. By screwing in bolts 203, the stability of the connection is further enhanced. To further ensure the stability of the connection, shims 205 are placed at the junction of fixing plates 201 and crossbeams 21. Then, clamping plates 207 are inserted, and bolts 206 are screwed in to fix fixing plates 201 and shims 205 together. Through this series of steps, a very stable connection is formed, effectively preventing the frame from loosening, thereby improving the load-bearing capacity of the roof.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A prefabricated green building roof, comprising a roof (1), characterized in that: Support columns (13) are fixedly connected to the four corners of the outer wall of the roof (1). A steel frame (14) is fixedly connected to the top of the support columns (13). A base surface (3) is installed on the top wall of the roof (1). A water storage tank (9) is installed in the middle of the top wall of the base surface (3). Diversion plates (7) are installed on the left and right sides of the water storage tank (9). A diversion channel (8) is opened on the outer wall of the diversion plate (7). A diversion pipe (17) is connected to the four corners of the inner wall of the water storage tank (9). The top of the water storage tank (9) is fixed. A water-absorbing sheet (10) is connected to the bottom of the water-absorbing sheet (10), and multiple water-absorbing blocks (16) are fixedly connected at equal intervals. A soil layer (11) is fixedly connected to the top of the water-absorbing sheet (10). A water-storage tank (20) is fixedly connected to the bottom of the first water storage tank (9). Multiple crossbeams (21) are installed at equal intervals on the inner side of the steel frame (14). A fixing mechanism (2) is installed at the connection between the crossbeams (21) and the steel frame (14). The fixing mechanism (2) is used to fix the crossbeams (21) and the steel frame (14) to prevent loosening and improve its stability.
2. The prefabricated green building roof according to claim 1, characterized in that: The fixing mechanism (2) includes a fixing plate (201), which is equidistantly installed on the top wall of the steel frame (14). The middle of the top wall of the fixing plate (201) is threaded with a bolt (204). A gasket (202) is installed on the front bottom side of the fixing plate (201). A bolt (203) is threaded on the front top side of the gasket (202). A gasket (205) is installed on the rear bottom side of the fixing plate (201). A clamping plate (207) is installed on both the left and right sides of the fixing plate (201) and the gasket (205). A bolt (206) is threaded on the middle of the top wall of the clamping plate (207).
3. The prefabricated green building roof according to claim 1, characterized in that: Multiple planting pits (15) are equally spaced on the top of the soil layer (11), and a vegetation layer (12) is installed on the top of the planting pits (15).
4. A prefabricated green building roof according to claim 1, characterized in that: Drainage channels (6) are installed on the left and right sides of the top wall of the base surface (3), and a grating plate (5) is installed on the top of the drainage channel (6).
5. A prefabricated green building roof according to claim 4, characterized in that: The top wall of the grating plate (5) is provided with multiple drainage holes (4) at equal intervals.
6. A prefabricated green building roof according to claim 4, characterized in that: The bottom front side of the drainage trough (6) is connected to a drainage pipe (18).
7. A prefabricated green building roof according to claim 1, characterized in that: The outer wall of the second water storage tank (20) is connected to the left and right ends of the front side by connecting pipes (19).
8. A prefabricated green building roof according to claim 7, characterized in that: The end of the connecting pipe (19) is connected to the lower part of the outer wall of the drain pipe (18).