Lightweight roof sponge greening construction method and structure

Abstract

The invention relates to the technical field of light roof greening engineering, in particular to a light roof sponge greening construction method and structure which can avoid damage of root growth of vegetation to a roof, prevent leakage of the roof due to damage of the root of the vegetation, facilitate collection and utilization of rainwater and avoid waste of rainwater resources. The practicability is improved; comprising a water collecting tank, four sets of supporting legs are symmetrically and fixedly arranged at the bottom end of the water collecting tank, the bottom ends of the four sets of supporting legs are fixedly connected to a roof, a water storage sponge block is fixedly installed in the water collecting tank, and a drainage notch is formed in the lower side of the left end of the water collecting tank; the water inlets are located below the planting disc, the two L-shaped drainage pipes are fixedly communicated with a plurality of flow dividing pipes at equal intervals, the output ends of the flow dividing pipes are fixedly communicated with the water inlets respectively, and the double-shaft motor is fixedly installed at the left end of the water collecting tank and used for extruding the water storage sponge block.

Description

Technical Field

[0001] The invention relates to the technical field of lightweight roof greening projects, and in particular to a lightweight roof sponge greening construction method and structure. Background Art

[0002] There are a large number of exposed roofs in cities, which are completely unprotected. It is cold in winter and hot in summer, and is exposed to the sun and rain for a long time. Dust accumulates on the roofs, and dust fills the sky when it blows, increasing the dust in the air. When it rains, sewage flows everywhere, causing serious surface pollution, while increasing the burden on ground pipes, causing urban waterlogging. Roof waterproofing is cracked and damaged due to sun and rain, and water seepage on the roof has a significant impact on the life of the building and the people's livable life. Therefore, vegetating urban roofs with vegetation can not only effectively protect the building structure and extend its service life, but also greatly increase the total amount of greening in the city, thereby effectively alleviating the urban heat island effect.

[0003] In the existing urban rooftop vegetation greening structure, the root growth of vegetation can easily damage the roof, resulting in the risk of roof leakage. It is also inconvenient to collect and utilize rainwater, which can easily lead to a waste of rainwater resources and is not practical enough. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a lightweight roof sponge greening construction method and structure that can prevent the root growth of vegetation from damaging the roof, prevent the roof from leaking due to damage to the root system of vegetation, facilitate the collection and utilization of rainwater, avoid the waste of rainwater resources, and improve practicality.

[0005] Technical Solution

[0006] To achieve the above object, the present invention provides the following technical solution: a lightweight roof sponge greening construction method and structure, including a water storage structure, a planting structure, a watering structure and the following steps:

[0007] Step 1: Install a water storage structure on the roof and use the water storage structure to collect rainwater;

[0008] Step 2: Install a planting structure on the roof, use the planting structure to plant vegetation and green the roof;

[0009] Step 3: Install a watering structure between the water storage structure and the planting structure to transport rainwater stored in the water storage structure to the planting structure to water the vegetation;

[0010] The water storage structure includes a water collecting tank, four groups of legs are symmetrically fixed at the bottom of the water collecting tank, the bottom ends of the four groups of legs are fixedly connected to the roof, a water storage sponge block is fixedly installed inside the water collecting tank, and a drainage groove is opened on the lower side of the left end of the water collecting tank. The planting structure includes a planting trough, which is installed on the roof, a water storage cotton board is fixedly laid at the bottom of the planting trough, a geotextile is laid on the top of the water storage cotton board, and a soil base layer is laid on the top of the geotextile. Multiple groups of planting trays are placed side by side in the planting trough, and the bottom ends of the multiple groups of planting trays are all against the soil base layer. The bottoms of the multiple groups of planting trays are symmetrically provided with two rows of air holes. The watering structure includes a drainage trough, a U-shaped connecting pipe and a dual-axis motor. The drainage trough is connected to the drainage groove and is fixedly installed on the left end of the water collecting tank. The right end of the U-shaped connecting pipe is equidistantly connected with multiple groups of docking pipes, and the right ends of the multiple groups of docking pipes are connected to the left end of the drainage trough. The output ends on both sides of the U-shaped connecting pipe are fixedly connected with L-shaped drainage pipes. Both ends are provided with water inlets, which are located below the planting tray. Multiple groups of manifolds are evenly fixedly connected on the two groups of L-shaped drainage pipes, and the output ends of the multiple groups of manifolds are respectively fixedly connected with the multiple groups of water inlets. A double-axis motor is fixedly installed on the left end of the water collecting tank, and the output ends on both sides of the double-axis motor are fixedly connected with transmission rods. Two groups of support plates are symmetrically fixedly connected to the left end of the water collecting tank, and the two groups of transmission rods are rotatably installed on the two groups of support plates respectively. Worm sections are arranged on the two groups of transmission rods, and two groups of two-way threaded rods are symmetrically rotatably installed inside the water collecting tank. The left ends of the two groups of two-way threaded rods pass through the left end of the water collecting tank, and the left ends of the two groups of two-way threaded rods are fixedly sleeved with worm gears, and the two groups of worm gears are respectively meshed with the two groups of worm sections. Two groups of transmission blocks are symmetrically threadedly sleeved on the two groups of two-way threaded rods, and the bottom ends of the four groups of transmission blocks are hinged with transmission rods. A pressure plate is slidably installed inside the water collecting tank, and the bottom ends of the four groups of transmission rods are hinged to the top of the pressure plate, and filter holes are evenly arranged on the pressure plate.

[0011] Preferably, a rotating rod is rotatably installed in the drainage groove, and the front end of the rotating rod passes through the front end of the drainage groove. The transmission rod and the front end of the rotating rod are fixedly sleeved with pulleys, and the transmission sleeves on the two sets of pulleys are equipped with transmission belts. A plurality of water-repellent plates are equidistantly arranged in a circular array on the outer wall of the rotating rod.

[0012] Preferably, a drainage pipe is fixedly connected to the lower side of the left end of the planting trough, and a drainage valve is installed on the drainage pipe.

[0013] Preferably, water stop valves are provided on both the front and rear sides of the U-shaped connecting pipe.

[0014] Preferably, a rainwater collecting flare is fixedly connected to the top of the water collecting tank.

[0015] Preferably, the front and rear ends of the multiple groups of planting trays are symmetrically fixedly connected with U-shaped handles, and multiple groups of slots are equidistantly provided on both sides of the top of the planting trough. The multiple groups of planting trays are placed side by side in the planting trough through the cooperation of the U-shaped handles and the slots.

[0016] Preferably, two sets of ear plates are symmetrically fixedly connected to the left and right ends of the planting trough.

[0017] Preferably, a protective cover is detachably mounted on the front end of the drainage trough and a front group of support plates, and an observation window is provided on the protective cover.

[0018] Preferably, a plurality of groups of the U-shaped handles are all fixedly provided with anti-slip handle covers.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the water collection box and the planting trough are installed on the roof, after the water storage cotton board is laid at the bottom of the planting trough, a layer of geotextile is laid on the water storage cotton board, and then the soil base is laid on the geotextile, and then the planting trays are placed side by side in the planting trough, and the planting trays are filled with soil, fertilizers, etc. and vegetation is planted. Rainwater can be collected by the water collection box. When it rains, after the rainwater falls into the water collection box, it is absorbed and stored by the water storage sponge block, and the rainwater is also The vegetation planted in the planting tray is watered, and the excess rainwater flows into the soil base below through the air holes, and penetrates into the water storage cotton board through the geotextile and is stored, so that the soil base remains moist for a short time. When it is not raining, the pressure plate blocks the water storage sponge block, which can reduce the evaporation of rainwater inside the water storage sponge block. When it is necessary to water the vegetation, the dual-axis motor is started to drive the transmission rod to rotate, and the transmission rod drives the two sets of bidirectional threaded rods to rotate together through the meshing of the worm segment and the worm wheel, so that the bidirectional threaded rod drives each The two sets of transmission blocks above move inward, and then the transmission blocks push the pressure plate to slide downward through the transmission rod, so that the pressure plate squeezes the water storage sponge block. The rainwater stored in the water storage sponge block is squeezed out by the pressure plate, and flows into the drainage trough through the drainage notch, and flows into the U-shaped connecting pipe through the butt pipe. Under the action of potential energy, the rainwater flows into the planting trough through the L-shaped drainage pipe and the diversion pipe, so that the rainwater enters the planting trough from bottom to top, watering the vegetation from the bottom, so that the roots of the vegetation can fully absorb the water. Appropriate watering is carried out according to the condition of the vegetation, and then the pressure plate is lifted through the reverse rotation of the dual-axis motor to make the water storage sponge block rebound. By planting the vegetation in the planting tray and separating them with planting troughs, water storage cotton boards, geotextiles and soil base layers are laid inside the planting troughs. While ensuring the normal growth of vegetation, the damage to the roof caused by the growth of the vegetation roots is avoided, and the roof is prevented from leaking due to damage to the vegetation roots. It is also convenient to collect and utilize rainwater, avoid wasting rainwater resources, and improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the axonometric structure of the present invention;

[0021] Figure 2 It is a left-side structural schematic diagram of the present invention;

[0022] Figure 3 It is a front structural schematic diagram of the present invention;

[0023] Figure 4 It is a partial left axonometric structural schematic diagram of the present invention;

[0024] Figure 5 The present invention Figure 4 Axonometric section diagram of the structure;

[0025] Figure 6 The present invention Figure 4 Schematic diagram of the partial axonometric structure;

[0026] Figure 7 is an axonometric structural diagram of the planting structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the axonometric structure of the planting tray of the present invention;

[0028] Fig. 9 It is a schematic diagram of the axonometric cross-section structure of the planting trough in the present invention;

[0029] Fig.10 It is a schematic diagram of the axonometric structure of the planting trough in the present invention;

[0030] Fig.11 It is a partial axonometric structural schematic diagram of the watering structure in the present invention;

[0031] Fig.12 It is a schematic diagram of the axonometric structure of the connection between the transfer rod and the water-repelling plate in the present invention;

[0032] Fig.13 It is a schematic diagram of the axonometric structure of the connection between the transmission block and the transmission rod in the present invention;

[0033] Fig.14 It is a right axonometric structural schematic diagram of the drainage trough in the present invention;

[0034] Fig.15 It is a schematic diagram of the rear axonometric structure of the protective cover in the present invention;

[0035] Markings in the attached figure: 1. water collecting tank; 2. outriggers; 3. water storage sponge block; 4. planting trough; 5. water storage cotton board; 6. geotextile; 7. soil base; 8. planting tray; 9. drainage trough; 10. U-shaped connecting pipe; 11. butt pipe; 12. L-shaped drainage pipe; 13. diversion pipe; 14. dual-axis motor; 15. support plate; 16. transmission rod; 17. worm segment; 18. two-way threaded rod; 19. worm gear; 20. transmission block; 21. transmission rod; 22. pressure plate; 23. filter hole; 24. rotating rod; 25. pulley; 26. transmission belt; 27. water-repelling sheet; 28. air vent; 29. ​​drainage pipe; 30. drainage valve; 31. rainwater collection expansion; 32. water-stop valve; 33. U-shaped handle; 34. ear plate; 35. protective cover; 36. observation window; 37. non-slip handle. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] Example

[0038] See also Figure 1-Figure 15 The invention discloses a lightweight roof sponge greening construction method and structure, comprising a water storage structure, a planting structure, a watering structure and the following steps:

[0039] Step 1: Install a water storage structure on the roof and use the water storage structure to collect rainwater;

[0040] Step 2: Install a planting structure on the roof, use the planting structure to plant vegetation and green the roof;

[0041] Step 3: Install a watering structure between the water storage structure and the planting structure to transport rainwater stored in the water storage structure to the planting structure to water the vegetation;

[0042] The bottom of the water collecting tank 1 is symmetrically fixed with four groups of legs 2, the bottom ends of the four groups of legs 2 are fixedly connected to the roof, a water storage sponge block 3 is fixedly installed inside the water collecting tank 1, and a drainage notch is opened on the lower left side of the water collecting tank 1; the planting structure includes a planting trough 4, the planting trough 4 is installed on the roof, a water storage cotton board 5 is fixedly laid at the bottom end of the planting trough 4, a geotextile 6 is laid on the top of the water storage cotton board 5, a soil base layer 7 is laid on the top of the geotextile 6, and multiple groups of planting trays 8 are placed side by side in the planting trough 4. The bottom ends of the multiple planting trays 8 are all against the soil base 7, and the bottoms of the multiple planting trays 8 are symmetrically provided with two rows of air holes 28. The drainage groove 9 connected to the drainage groove is fixedly installed on the left end of the water collecting tank 1, and the right end of the U-shaped connecting pipe 10 is equidistantly connected with multiple groups of butt pipes 11. The right ends of the multiple groups of butt pipes 11 are connected to the left end of the drainage groove 9. The output ends on both sides of the U-shaped connecting pipe 10 are fixedly connected with L-shaped drainage pipes 12. The front and rear ends of the planting groove 4 are provided with water inlets, and the water inlets are located below the planting tray 8. The two groups of L-shaped The drainage pipe 12 is evenly and fixedly connected with multiple groups of manifolds 13, and the output ends of the multiple groups of manifolds 13 are respectively fixedly connected with multiple groups of water inlets. A double-axis motor 14 is fixedly installed on the left end of the water collecting tank 1. The output ends on both sides of the double-axis motor 14 are fixedly connected with a transmission rod 16. The left end of the water collecting tank 1 is symmetrically fixedly connected with two groups of support plates 15. The two groups of transmission rods 16 are respectively rotatably installed on the two groups of support plates 15. The two groups of transmission rods 16 are provided with worm sections 17. Two groups of double-axis motors 14 are symmetrically installed in rotation inside the water collecting tank 1. The left ends of the two groups of bidirectional threaded rods 18 are passed through the left end of the water collecting tank 1. The left ends of the two groups of bidirectional threaded rods 18 are fixedly sleeved with worm gears 19. The two groups of worm gears 19 are respectively meshed with the two groups of worm segments 17. The two groups of bidirectional threaded rods 18 are symmetrically threaded with two groups of transmission blocks 20. The bottom ends of the four groups of transmission blocks 20 are hinged with transmission rods 21. A pressure plate 22 is slidably installed inside the water collecting tank 1. The bottom ends of the four groups of transmission rods 21 are hinged with the top of the pressure plate 22. The pressure plate 22 is evenly provided with filter holes 23.When in use, the water collecting box 1 and the planting trough 4 are installed on the roof. After the water storage cotton board 5 is laid at the bottom of the planting trough 4, a layer of geotextile 6 is laid on the water storage cotton board 5, and then a soil base layer 7 is laid on the geotextile 6. Then the planting trays 8 are placed side by side in the planting trough 4, and the planting trays 8 are filled with soil, fertilizers, etc. and vegetation is planted. The rainwater can be collected by the water collecting box 1. When it rains, after the rainwater falls into the water collecting box 1, it is absorbed and stored by the water storage sponge block 3. At the same time, the rainwater also irrigates the vegetation planted in the planting tray 8, and the excess The rainwater flows into the soil base 7 below through the air vents 28, and penetrates into the water storage cotton board 5 through the geotextile 6 for storage, so that the soil base 7 remains moist for a short time. When it is not raining, the pressure plate 22 blocks the water storage sponge block 3, which can reduce the evaporation of rainwater inside the water storage sponge block 3. When it is necessary to water the vegetation, the dual-axis motor 14 is started to drive the transmission rod 16 to rotate, and the transmission rod 16 drives the two sets of bidirectional threaded rods 18 to rotate together through the meshing of the worm section 17 and the worm wheel 19, so that the bidirectional threaded rod 18 drives the two sets of bidirectional threaded rods above each other. The transmission block 20 moves inward, and then the transmission block 20 pushes the pressure plate 22 to slide downward through the transmission rod 21, so that the pressure plate 22 squeezes the water storage sponge block 3, and the rainwater stored in the water storage sponge block 3 is squeezed out by the squeezing of the pressure plate 22, and flows into the drainage groove 9 through the drainage groove, and flows into the U-shaped connecting pipe 10 through the docking pipe 11. Under the action of potential energy, the rainwater flows into the planting groove 4 through the transportation of the L-shaped drainage pipe 12 and the diversion of the diversion pipe 13, so that the rainwater enters the planting groove 4 from bottom to top, watering from the bottom of the vegetation, so that the vegetation root system can fully absorb To obtain moisture, water the vegetation appropriately according to its condition, and then lift the pressing plate 22 through the reverse rotation of the dual-axis motor 14 to make the water storage sponge block 3 rebound. By planting the vegetation in the planting tray 8 and separating them through the planting groove 4, a water storage cotton board 5, a geotextile 6 and a soil base 7 are laid inside the planting groove 4. While ensuring the normal growth of vegetation, the root growth of vegetation is prevented from damaging the roof, and the roof is prevented from leaking due to the damage of the root system of vegetation. It is also convenient to collect and utilize rainwater, avoid wasting rainwater resources, and improve practicality. ;

[0043] A rotating rod 24 is rotatably installed in the drainage groove 9, and the front end of the rotating rod 24 passes through the front end of the drainage groove 9. The transmission rod 16 and the front end of the rotating rod 24 are fixedly sleeved with pulleys 25, and the transmission sleeves on the two sets of pulleys 25 are equipped with transmission belts 26. A plurality of groups of water-repelling plates 27 are equidistantly arranged in a circular array on the outer wall of the rotating rod 24; when watering the vegetation, when the dual-axis motor 14 drives the transmission rod 16 to rotate, the transmission rod 16 drives the rotating rod 24 to rotate clockwise through the transmission of the pulley 25 and the transmission belt 26, so that the rotating rod 24 drives the water-repelling plate 27 to rotate clockwise, and the clockwise rotation of the water-repelling plate 27 can effectively accelerate the speed at which rainwater flows to the drainage groove, thereby promoting the flow of rainwater.

[0044] The lower left end of the planting trough 4 is fixedly connected to a drain pipe 29, on which a drain valve 30 is installed. When in use, after rain or during watering, when there is a lot of rainwater inside the planting trough 4, the drain valve 30 can be opened to allow some of the rainwater in the planting trough 4 to flow out appropriately through the drain pipe 29 to avoid soaking the roots of the vegetation. The drain pipe 29 is at a height of a layer of the water-storage cotton board 5, so that the soil base layer 7 on the geotextile 6 will not flow away through the drain pipe 29.

[0045] The U-shaped connecting pipe 10 is provided with a water stop valve 32 on both the front and rear sides. By providing the water stop valve 32, when it is necessary to water the inside of the planting trough 4, the water stop valve 32 is opened, and then the water storage sponge block 3 is squeezed by the pressure plate 22 to water. When watering is not required, the water stop valve 32 is closed to stop the flow of water and prevent the water inside the water collecting tank 1 from flowing into the planting trough 4 through the L-shaped drain pipe 12.

[0046] The top of the water collecting tank 1 is fixedly connected with a rain collecting expansion opening 31 ; by providing the rain collecting expansion opening 31 , the rainwater collection range can be effectively expanded, so that more rainwater can fall into the water collecting tank 1 and be collected.

[0047] The front and rear ends of the multiple groups of planting trays 8 are symmetrically fixedly connected with U-shaped handles 33, and multiple groups of card slots are equidistantly provided on both sides of the top of the planting trough 4. The multiple groups of planting trays 8 are placed side by side in the planting trough 4 through the cooperation of the U-shaped handles 33 and the card slots; by setting the U-shaped handles 33, when placing the planting trays 8, the planting trays 8 can be limited, so that the planting trays 8 can be placed side by side while improving stability and avoiding left and right shaking, and also making it more convenient to take and put the planting trays 8.

[0048] The planting trough 4 is symmetrically and fixedly connected with two sets of ear plates 34 at both ends. By providing the ear plates 34, the planting trough 4 can be conveniently fixedly installed on the roof by bolts.

[0049] A protective cover 35 is detachably installed on the front end of the drainage groove 9 and a front group of support plates 15, and an observation window 36 is provided on the protective cover 35; by providing the protective cover 35, the pulley 25 and the transmission belt 26 can be covered and buckled to protect the transmission belt 26 from external annular influences, and the use of the transmission belt 26 can be observed through the observation window 36, so as to facilitate timely discovery and replacement.

[0050] The plurality of groups of U-shaped handles 33 are all fixedly sleeved with anti-skid sleeves 37 ; by providing the anti-skid sleeves 37 , it is possible to prevent the hand from slipping when holding the U-shaped handles 33 to take or place the planting tray 8 .

[0051] The invention discloses a lightweight roof sponge greening construction method and structure. The working principle is that when in use, a water collection box 1 and a planting trough 4 are installed on the roof. After a water storage cotton board 5 is laid at the bottom of the planting trough 4, a layer of geotextile 6 is laid on the water storage cotton board 5. Then, a soil base layer 7 is laid on the geotextile 6. Then, a planting tray 8 is placed side by side in the planting trough 4. Soil, fertilizer, etc. are filled in the planting tray 8 and vegetation is planted. Rainwater can be collected by the water collection box 1. When it rains, rainwater falls into the collection box. After entering the water tank 1, it is absorbed and stored by the water storage sponge block 3. At the same time, the rainwater also irrigates the vegetation planted in the planting tray 8. The excess rainwater flows into the soil base 7 below through the air vents 28, and penetrates into the water storage cotton board 5 through the geotextile 6 and is stored, so that the soil base 7 remains moist for a short time. When it is not raining, the pressure plate 22 blocks the water storage sponge block 3, which can reduce the evaporation of rainwater inside the water storage sponge block 3. When it is necessary to water the vegetation, first open the water stop valve 32, and then open the water stop valve 32. The dual-axis motor 14 is driven to drive the transmission rod 16 to rotate, and the transmission rod 16 drives the two sets of bidirectional threaded rods 18 to rotate together through the meshing of the worm section 17 and the worm wheel 19, so that the bidirectional threaded rods 18 drive the two sets of transmission blocks 20 on each of them to move inward, and then the transmission blocks 20 push the pressure plate 22 to slide downward through the transmission rod 21, so that the pressure plate 22 squeezes the water storage sponge block 3, and the rainwater stored in the water storage sponge block 3 is squeezed out by the squeezing of the pressure plate 22, and flows into the drainage groove through the drainage notch. 9, and flows into the U-shaped connecting pipe 10 through the butt pipe 11. Under the action of potential energy, the rainwater flows into the planting trough 4 through the transportation of the L-shaped drain pipe 12 and the diversion of the diversion pipe 13, so that the rainwater enters the planting trough 4 from bottom to top, watering the vegetation from the bottom, so that the roots of the vegetation can fully absorb the water, and appropriate watering is performed according to the situation of the vegetation, and then the double-axis motor 14 rotates in the opposite direction to lift the pressure plate 22 to make the water storage sponge block 3 rebound, and finally the water stop valve 32 is closed.

[0052] The installation, connection or setting methods of a lightweight roof sponge greening construction method and structure of the present invention are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects; the dual-axis motor, drain valve and water-stop valve of a lightweight roof sponge greening construction method and structure of the present invention are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A lightweight roof sponge greening construction method and structure, characterized in that: It includes water storage structure, planting structure, watering structure and the following steps: Step 1: Install a water storage structure on the roof and use the water storage structure to collect rainwater; Step 2: Install a planting structure on the roof, use the planting structure to plant vegetation and green the roof; Step 3: Install a watering structure between the water storage structure and the planting structure to transport rainwater stored in the water storage structure to the planting structure to water the vegetation; A water storage structure, the water storage structure comprising a water collecting tank (1), the bottom end of the water collecting tank (1) being symmetrically fixed with four groups of legs (2), the bottom ends of the four groups of legs (2) being fixedly connected to the roof, a water storage sponge block (3) being fixedly installed inside the water collecting tank (1), and a drainage notch being provided on the lower side of the left end of the water collecting tank (1); A planting structure, the planting structure comprising a planting trough (4), the planting trough (4) being installed on a roof, a water-storage cotton board (5) being fixedly laid at the bottom end of the planting trough (4), a geotextile (6) being laid at the top end of the water-storage cotton board (5), a soil base layer (7) being laid at the top end of the geotextile (6), a plurality of groups of planting trays (8) being arranged side by side in the planting trough (4), the bottom ends of the plurality of groups of planting trays (8) all being against the soil base layer (7), and the bottoms of the plurality of groups of planting trays (8) all being symmetrically provided with two rows of air holes (28); A watering structure, the watering structure comprising a drainage trough (9), a U-shaped connecting pipe (10) and a double-axis motor (14); the drainage trough (9) is connected to the drainage trough and is fixedly installed at the left end of the water collecting tank (1); the right end of the U-shaped connecting pipe (10) is equidistantly connected to a plurality of groups of butt pipes (11); the right ends of the plurality of groups of butt pipes (11) are all connected to the left end of the drainage trough (9); the output ends of both sides of the U-shaped connecting pipe (10) are fixedly connected to L-shaped drainage pipes (12); the front and rear ends of the planting trough (4) are both provided with water inlets, the water inlets are located below the planting tray (8); the two groups of L-shaped drainage pipes (12) are evenly equidistantly fixedly connected to a plurality of groups of manifold pipes (13); the output ends of the plurality of groups of manifold pipes (13) are respectively fixedly connected to the plurality of groups of water inlets; the double-axis motor (14) is fixedly installed at the left end of the water collecting tank (1) and is used to squeeze the water storage sponge block (3).

2. A lightweight roof sponge greening construction method and structure as claimed in claim 1, characterized in that: The output ends of both sides of the dual-axis motor (14) are fixedly connected with transmission rods (16); the left end of the water collecting tank (1) is symmetrically fixedly connected with two groups of support plates (15); the two groups of transmission rods (16) are rotatably mounted on the two groups of support plates (15) respectively; the two groups of transmission rods (16) are provided with worm sections (17); two groups of bidirectional threaded rods (18) are rotatably mounted inside the water collecting tank (1) in a front-to-back symmetrical manner; the left ends of the two groups of bidirectional threaded rods (18) are both extended out from the left end of the water collecting tank (1); the two groups of bidirectional threaded rods (18) are rotatably mounted inside the water collecting tank (1) in a front-to-back symmetrical manner; the left ends of the two groups of bidirectional threaded rods (18) are both extended out from the left end of the water collecting tank (1); the two groups of bidirectional threaded rods (18) are rotatably mounted on ... The left ends of the threaded rods (18) are fixedly sleeved with worm wheels (19), and the two groups of worm wheels (19) are respectively meshed with the two groups of worm segments (17). The two groups of bidirectional threaded rods (18) are symmetrically sleeved with two groups of transmission blocks (20), and the bottom ends of the four groups of transmission blocks (20) are hinged with transmission rods (21). A pressure plate (22) is slidably installed inside the water collecting box (1), and the bottom ends of the four groups of transmission rods (21) are hinged with the top of the pressure plate (22), and filter holes (23) are evenly arranged on the pressure plate (22).

3. A lightweight roof sponge greening construction method and structure as claimed in claim 2, characterized in that: A rotating rod (24) is rotatably installed in the drainage groove (9), and the front end of the rotating rod (24) passes through the front end of the drainage groove (9). The front ends of the transmission rod (16) and the rotating rod (24) are fixedly sleeved with pulleys (25), and the transmission sleeves on the two sets of pulleys (25) are equipped with transmission belts (26). A plurality of water-repelling plates (27) are equidistantly arranged in an annular array on the outer wall of the rotating rod (24).

4. A lightweight roof sponge greening construction method and structure as claimed in claim 3, characterized in that: The lower side of the left end of the planting trough (4) is fixedly connected to a drainage pipe (29), and a drainage valve (30) is installed on the drainage pipe (29).

5. A lightweight roof sponge greening construction method and structure as claimed in claim 4, characterized in that: Water stop valves (32) are provided on both the front and rear sides of the U-shaped connecting pipe (10).

6. A lightweight roof sponge greening construction method and structure as claimed in claim 5, characterized in that: A rainwater collecting expansion opening (31) is fixedly connected to the top of the water collecting tank (1).

7. A lightweight roof sponge greening construction method and structure as claimed in claim 6, characterized in that: The front and rear ends of the plurality of planting trays (8) are symmetrically fixedly connected with U-shaped handles (33), and the top sides of the planting trough (4) are equidistantly provided with a plurality of clamping grooves. The plurality of planting trays (8) are placed side by side in the planting trough (4) through the cooperation of the U-shaped handles (33) and the clamping grooves.

8. A lightweight roof sponge greening construction method and structure as claimed in claim 7, characterized in that: Two groups of ear plates (34) are symmetrically fixedly connected to both left and right ends of the planting trough (4).

9. A lightweight roof sponge greening construction method and structure as claimed in claim 8, characterized in that: A protective cover (35) is detachably mounted on the front end of the drainage trough (9) and a front group of support plates (15), and an observation window (36) is arranged on the protective cover (35).

10. A lightweight roof sponge greening construction method and structure as claimed in claim 9, characterized in that: A plurality of groups of U-shaped handles (33) are all fixedly sleeved with anti-slip handle sleeves (37).

Images