Roof waterproof system based on steel structure

Abstract

The invention relates to the field of roofs, and provides a roof waterproof system based on a steel structure, which comprises a house body and a protective roof, the protective roof is fixedly connected to the top wall of the house body, a gap is reserved between the bottom wall of the protective roof and the top wall of the house body, a plant box is embedded in the protective roof, a plant protection mechanism is connected to the protective roof, and a detection box is slidably connected to the side wall of the protective roof. A temporary storage cavity is formed in the detection box, the bottom wall of the temporary storage cavity communicates with the bottom wall of the detection box through a first channel, the detection box is connected with the plant protection mechanism, a rain box is fixedly connected to the side wall of the house body, a rain cavity is formed in the rain box and communicates with the top wall of the rain box through a second channel, and the first channel is located over the second channel. A double-waterproof structure is formed, and rainwater utilization is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of roof, in particular to a roof waterproof system based on steel structure. BACKGROUND

[0002] At present, the roof waterproof technology mainly adopts the coiled material waterproof layer, the coating waterproof layer and the drainage and heat insulation integrated structure and the like. These ways have been widely applied in actual engineering, but there are still the following deficiencies: Single waterproof structure is easy to fail, most of the traditional roofs adopt single waterproof layer, once the waterproof layer appears damage or peeling, rainwater leakage will be inevitable, resulting in indoor water leakage and shortening of building life; Rainwater utilization rate is low, and resources are wasted seriously, the existing roof structure usually only has the drainage function, rainwater is directly drained into the municipal pipe network through the drain pipe, and cannot be effectively collected and utilized. SUMMARY

[0003] In view of the above technical problems, the present application aims to provide a roof waterproof system based on steel structure, in order to solve the above technical problems, the present application adopts the following technical scheme to realize: A roof waterproof system based on steel structure, comprising a roof body and a protective roof, the protective roof is fixedly connected to the roof body top wall, the roof body top wall is paved with a thermoplastic polyolefin waterproof layer, a gap is reserved between the protective roof bottom wall and the roof body top wall, a plant box is inlaid on the protective roof, a plant protection mechanism is connected to the protective roof, a detection box is slidingly connected to the side wall of the protective roof, a temporary storage cavity is formed in the detection box, the bottom wall of the temporary storage cavity is communicated with the bottom wall of the detection box through a channel one, the detection box is connected with the plant protection mechanism, a rain box is fixedly connected to the side wall of the roof body, a rain cavity is formed in the rain box, the rain cavity is communicated with the top wall of the rain box through a channel two, and the channel one is located directly above the channel two.

[0004] Preferably, the plant protection mechanism comprises a vertical steel plate, a steel frame, a soft protection piece, a sealing steel plate and a pull wire, the vertical steel plate, the sealing steel plate and two guide wheels are fixedly connected to the protective roof, the steel frame is slidingly connected to the protective roof, the soft protection piece is connected between the steel frame and the vertical steel plate, the steel frame is connected with the vertical steel plate through an elastic piece, the steel frame is fixedly connected with the pull wire, and the pull wire is fixedly connected with the detection box after being guided by the two guide wheels.

[0005] Preferably, the rain box is provided with a heat tank and a liquid preparation chamber. The rain chamber is connected to the heat tank through channel three and to the liquid preparation chamber through channel four. The heat tank is connected to channel four through channel five. A thermal expansion member is fixed to the inner wall of the heat tank, and a valve is fixed to the thermal expansion member. The valve is slidably connected to the inner wall of channel five and has a through hole. A float is slidably connected to the inner wall of the liquid preparation chamber, and a pump body is fixed to the float. A main pipe is fixed to the protective top, and an irrigation pipe assembly and two or more branch pipes are fixed to the main pipe. The irrigation pipe assembly extends to the top of the plant box, and the lower ends of the branch pipes extend to the bottom of the protective top. One of the branch pipes is located directly above the heat tank. The liquid outlet pipe on the pump body is fixed to the main pipe, and the liquid outlet pipe is made of soft material.

[0006] Preferably, a double-sloped self-rebound button is movably connected to the pump body, and a first inclined surface and a support block are fixedly connected to the inner wall of the liquid preparation chamber. A second inclined surface is rotatably connected to the support block, with the inclined surface of the first inclined surface facing downwards and the inclined surface of the second inclined surface facing upwards.

[0007] Preferably, a baffle is slidably connected to the top wall of the rain box, and a linkage bar is rotatably connected to the bottom wall of the detection box, with the lower end of the linkage bar rotatably connected to the top wall of the baffle.

[0008] Preferably, a filter screen is installed on the inner wall of the temporary storage cavity.

[0009] Preferably, the top wall of the protective roof is provided with a drainage groove.

[0010] Preferably, a photovoltaic panel is embedded on the protective top.

[0011] Preferably, the roof wall is sloped.

[0012] Preferably, the protective top sidewall is provided with a limiting member, which is used to limit the movement of the detection box.

[0013] The present invention has the following beneficial effects: This creates a double waterproof structure, enhancing the roof's protective performance. A double barrier is formed between the protective roof and the roof wall, requiring rainwater to pass through the protective roof first, and then undergo secondary protection by the roof wall, thereby significantly improving the overall waterproof performance of the roof and preventing rainwater from seeping into the room. It enables automatic plant protection to avoid damage from rain and debris. When there is heavy rainfall, the detection box activates the plant protection mechanism to protect the plants in the plant box, preventing damage from heavy rain, strong winds or falling objects, and ensuring healthy plant growth. Automatic rainwater collection and utilization reduces maintenance costs, allowing rainwater to smoothly enter the rain chamber and be stored in the rain tank, providing a reusable water source for subsequent irrigation and cooling, and reducing the consumption of external water resources. Attached Figure Description

[0014] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of a steel-structure-based roof waterproofing system according to the present invention; Figure 2 This is an exploded view of a steel structure-based roof waterproofing system according to the present invention; Figure 3 This is the present invention. Figure 1 Enlarged view of the Chinese plant protection agency; Figure 4 This is the present invention. Figure 1 Enlarged view of the testing box and the rain box; Figure 5 This is a front view of a steel structure-based roof waterproofing system according to the present invention; Figure 6 This is the present invention. Figure 5 Enlarged view of point A in the middle; Figure 7 This is the present invention. Figure 5 Enlarged view of point B in the middle; Figure 8 This is the present invention. Figure 7 A schematic diagram of the structure of the pump body and the inclined plate component 2.

[0016] Attached reference numerals: 1. Roof; 2. Protective roof; 3. Drainage trough; 4. Plant box; 5. Vertical steel plate; 6. Elastic component; 7. Steel frame; 8. Soft protective component; 9. Sealing steel plate; 10. Pull wire; 11. Guide wheel component; 12. Irrigation pipe assembly; 13. Main pipe; 14. Branch pipe; 15. Detection box; 16. Temporary storage chamber; 17. Channel 1; 18. Linkage bar; 19. Baffle plate; 20. Rain box; 21. Rain chamber; 22. Channel 2; 23. Heat tank; 24. Channel 3; 25. Channel 4; 26. Liquid preparation chamber; 27. Thermal expansion component; 28. Valve; 29. ​​Through hole; 30. Channel 5; 31. Float; 32. Pump body; 33. Inclined component 1; 34. Inclined component 2; 35. Liquid outlet pipe; 36. Support block; 37. Double-inclined self-rebound button. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] like Figures 1-7 As shown, a steel structure-based roof waterproofing system includes a roof body 1 and a protective roof 2. The protective roof 2 is fixed to the top wall of the roof body 1. The top wall of the roof body 1 is covered with a thermoplastic polyolefin waterproof layer. A gap is reserved between the bottom wall of the protective roof 2 and the top wall of the roof body 1. A plant box 4 is embedded in the protective roof 2. A plant protection mechanism is connected to the protective roof 2. A detection box 15 is slidably connected to the side wall of the protective roof 2. A temporary storage cavity 16 is opened on the detection box 15. The bottom wall of the temporary storage cavity 16 is connected to the bottom wall of the detection box 15 through a channel 17. The detection box 15 is connected to the plant protection mechanism. A rain box 20 is fixed to the side wall of the roof body 1. A rain cavity 21 is opened on the rain box 20. The rain cavity 21 is connected to the top wall of the rain box 20 through a channel 22. The channel 17 is located directly above the channel 22.

[0021] Roof 1 serves as the main load-bearing structure, providing the installation foundation for components such as the protective roof 2 and rain tank 20. High-strength steel and concrete are preferred materials, with an outer layer coated with anti-corrosion paint. The roof wall has a sloping design to facilitate rapid rainwater runoff. The thermoplastic polyolefin waterproof layer is constructed from thermoplastic polyolefin waterproof membrane, achieving effective waterproofing.

[0022] The protective roof 2 forms the first layer of waterproof barrier, while also providing a support platform for the plant box 4 and the plant protection mechanism. The surface is covered with a waterproof coating, and drainage channels 3 are provided in the top wall to facilitate drainage.

[0023] Plant box 4 is used to cultivate rooftop green plants. It is both aesthetically pleasing and environmentally friendly. It is preferably made of weather-resistant plastic or lightweight alloy material and has an internal drainage pipe.

[0024] The detection box 15 collects rainwater and drives the plant protection mechanism according to the weight change. It is preferably made of ABS engineering plastic and has a volume of more than 10 liters.

[0025] Rain chamber 20 stores rainwater from the roof and provides water for irrigation and cooling systems. The inner wall of rain chamber 21 is coated with an epoxy anti-corrosion coating.

[0026] like Figures 1-3 , Figure 6 As shown, in an optional embodiment of the present invention, the plant protection mechanism includes a vertical steel plate 5, a steel frame 7, a soft protective component 8, a sealing steel plate 9, and a pull wire 10. The vertical steel plate 5, the sealing steel plate 9, and two guide wheels 11 are all fixedly connected to the protective top 2. The steel frame 7 is slidably connected to the protective top 2. The soft protective component 8 is connected between the steel frame 7 and the vertical steel plate 5. The steel frame 7 is connected to the vertical steel plate 5 through an elastic component 6. A pull wire 10 is fixedly connected to the steel frame 7. After being guided by the two guide wheels 11, the pull wire 10 is fixedly connected to the detection box 15.

[0027] The upright steel plate 5 serves as a fixed support for the plant protection mechanism, used to install the soft protective components 8 and the steel frame 7. It is made of 30-50mm thick steel plate with hot-dip galvanized surface treatment to prevent corrosion.

[0028] The soft protective component 8 unfolds during heavy rain to wrap the plants inside the plant box 4, preventing impact and damage. The preferred material is flexible PVC film or high-strength waterproof cloth, which has flexibility and weather resistance.

[0029] The pull wire 10 connects the test box 15 and the steel frame 7, so that the steel frame 7 moves when the test box 15 moves down. The preferred material is wear-resistant steel wire rope with a diameter of 2-3mm and an outer anti-rust coating.

[0030] The guide wheel 11 is used to guide the running direction of the pull wire 10 and ensure stable force transmission.

[0031] like Figure 7As shown, in an optional embodiment of the present invention, the rain tank 20 is provided with a heat sink 23 and a liquid preparation chamber 26. The rain chamber 21 is connected to the heat sink 23 through channel three 24, and the rain chamber 21 is connected to the liquid preparation chamber 26 through channel four 25. The heat sink 23 is connected to channel four 25 through channel five 30. A thermal expansion member 27 is fixedly connected to the inner wall of the heat sink 23, and a valve 28 is fixedly connected to the thermal expansion member 27. The valve 28 is slidably connected to the inner wall of channel five 30, and a [missing information] is provided on the valve 28. A float 31 is slidably connected to the inner wall of the liquid preparation chamber 26 through hole 29. A pump body 32 is fixedly connected to the float 31. A main pipe 13 is fixedly connected to the protective top 2. An irrigation pipe assembly 12 and two or more branch pipes 14 are fixedly connected to the main pipe 13. The irrigation pipe assembly 12 extends to the top of the plant box 4. The lower end of the branch pipes 14 extends to the bottom of the protective top 2. One of the branch pipes 14 is located directly above the heat tank 23. The liquid outlet pipe 35 on the pump body 32 is fixedly connected to the main pipe 13. The liquid outlet pipe 35 is made of soft material.

[0032] The thermal expansion element 27 is capable of expanding when heated and contracting when cooled. The irrigation pipe assembly 12 and branch pipes 14 are preferably made of PVC pipe. The float 31 has a hollow structure and is preferably made of high-density polyethylene. The inner walls of the heat tank 23 and the liquid preparation chamber 26 are coated with an epoxy anti-corrosion coating. The pump body 32 is preferably a centrifugal pump or a pump body 32 with an operating voltage of 12V.

[0033] According to an optional embodiment of the present invention, a double-sloped self-rebound button 37 is movably connected to the pump body 32, and a sloped component 33 and a support block 36 are fixedly connected to the inner wall of the liquid preparation chamber 26. A sloped component 34 is rotatably connected to the support block 36, with the sloped surface of the sloped component 33 facing downward and the sloped surface of the sloped component 34 facing upward.

[0034] The double-sloping self-rebound button 37 can be pressed once to maintain the pressed state and start the pump body 32, and pressed again to rebound and turn off the pump body 32. like Figure 7 As shown, in an optional embodiment of the present invention, a baffle plate 19 is slidably connected to the top wall of the rain box 20, and a linkage bar 18 is rotatably connected to the bottom wall of the detection box 15, with the lower end of the linkage bar 18 rotatably connected to the top wall of the baffle plate 19.

[0035] In non-rainy conditions, the shield 19 blocks the second channel 22 to prevent debris from entering the rain chamber 21. The shield 19 is preferably made of aluminum alloy sheet with a thickness of 10-20mm and a sliding structure.

[0036] In an optional embodiment of the present invention, a filter screen is mounted on the inner wall of the temporary storage cavity 16. The filter screen can filter impurities and prevent impurities from clogging the temporary storage cavity 16.

[0037] According to an optional embodiment of the present invention, the top wall of the protective top 2 is provided with a drainage groove 3.

[0038] In an optional embodiment of the present invention, a photovoltaic panel is embedded in the protective top 2. The photovoltaic panel is used to convert solar energy into electrical energy for user consumption, which is green and energy-saving.

[0039] According to an optional embodiment of the present invention, the top wall of the roof 1 is sloping.

[0040] According to an optional embodiment of the present invention, the protective top 2 is provided with a limiting member on its side wall, which is used to limit the movement of the detection box 15.

[0041] Implementation process: The top wall of the protective roof 2 blocks rainwater, and the top wall of the roof 1 also blocks rainwater, forming a double waterproof roof structure.

[0042] In the initial state, the baffle 19 covers the second channel 22 to prevent debris from falling into the rain chamber 21 and causing blockage and cleaning trouble. The valve 28 blocks the fourth channel 25. The pump body 32 and the float 31 are in the lower limit position, and the soft protective part 8 is in the folded state.

[0043] When it is drizzling, the temporary storage chamber 16 drains water through channel 17. The water inflow rate of the temporary storage chamber 16 is less than the water outflow rate of the temporary storage chamber 16, so too much rainwater will not accumulate in the temporary storage chamber 16 and the detection box 15 will not descend.

[0044] During heavy rain, the water inflow rate of the temporary storage chamber 16 is greater than the water outflow rate, and the amount of rainwater in the temporary storage chamber 16 gradually increases. The weight of the detection box 15 increases, and the detection box 15 overcomes the elastic force of the elastic element 6 and moves down to abut against the limit block. The detection box 15 pulls the steel frame 7 to the right through the pull line 10 until the steel frame 7 abuts against the sealing steel plate 9, thereby causing the soft protective element 8 to unfold and wrap the plants in the plant box 4 to prevent excessive rainwater from flooding the plants, and also to prevent falling debris or strong winds from destroying the plants.

[0045] When the detection box 15 moves down, it will cause the baffle plate 19 to move to the right via the linkage bar 18. The baffle plate 19 will remove the cover from the second channel 22, and the rainwater discharged from the first channel 17 will pass through the second channel 22 and enter the rain chamber 21 for storage.

[0046] After the rain stops, the rainwater in the temporary storage chamber 16 is gradually drained. The detection box 15 moves upward and resets under the elastic force of the elastic element 6, the steel frame 7 moves to the left and resets, and the soft protective element 8 is folded to remove the shading and protection of the plant, so that the plant can carry out respiration and photosynthesis.

[0047] When the weather is hot, the solar heat causes the thermal expansion component 27 to expand and elongate. The thermal expansion component 27 drives the valve 28 to move downward, thereby connecting the through hole 29 to the channel 4 25. Rainwater in the rain chamber 21 slowly enters the liquid preparation chamber 26 through the channel 4 25, and the liquid level in the liquid preparation chamber 26 gradually rises, thereby driving the float 31 and the pump body 32 to move upward. The double-sloped self-rebound button 37 pushes the second inclined plate 34 to rotate counterclockwise. When the double-sloped self-rebound button 37 moves above the second inclined plate 34, the second inclined plate 34 rotates clockwise under its own gravity to return to its original position and abut against the support block 36. After the inclined surface above the double-sloped self-rebound button 37 and the inclined surface of the inclined surface component 33 come into contact, the inclined surface component 33 pushes the double-sloped self-rebound button 37 to press down, thereby activating the pump body 32 to draw rainwater in the liquid preparation chamber 26 to the liquid outlet pipe 35 and the main pipe 13. Rainwater is sprayed out from the branch pipe 14 and the irrigation pipe assembly 12. The rainwater sprayed out from the irrigation pipe assembly 12 irrigates the plants and prevents the soil from drying out in hot weather. The water sprayed out from the branch pipe 14 falls onto the top wall of the roof 1 and evaporates slowly. Evaporation absorbs heat, thereby lowering the temperature of the roof 1 and improving the comfort of the people inside the roof 1.

[0048] Rainwater sprayed from one of the branch pipes 14 enters the heat tank 23. The rainwater soaks the thermal expansion component 27, causing it to cool down. The thermal expansion component 27 cools and contracts, causing the valve 28 to move upward and re-seal the channel 4 25, thus stopping the flow of rainwater in the rain chamber 21 into the reserve liquid chamber 26. This prevents the rainwater in the rain chamber 21 from being used up too quickly. The rainwater in the heat tank 23 slowly flows back into the rain chamber 21 through the channel 3 24. The pump body 32 gradually pumps out the rainwater in the reserve liquid chamber 26, causing the liquid level in the reserve liquid chamber 26 to drop. The float 31 and the pump body 32 drop along with the liquid level. The double-sloped self-rebound button 37 abuts against the second sloping component 34 and is pressed by the second sloping component 34. After the double-sloped self-rebound button 37 moves below the second sloping component 34, it rebounds, and the pump body 32 closes, thus stopping the pumping of rainwater.

[0049] After a period of time, the rainwater in the heat sink 23 has almost completely flowed back, and the thermal expansion component 27 loses the cooling effect of the rainwater. The solar heat causes the thermal expansion component 27 to expand again. Using the above principle, intermittent automatic irrigation of plants and spraying water to cool the roof of the building 1 can be achieved.

[0050] The beneficial effects of this invention are as follows: A double waterproof structure is formed to improve the roof's protective performance. A double barrier is formed between the protective roof 2 and the roof wall 1. Rainwater must first pass through the protective roof 2 and then be protected a second time by the roof wall 1, thereby significantly improving the overall waterproof performance of the roof and preventing rainwater from seeping into the room. To achieve automatic plant protection and avoid damage from rain and debris, when there is heavy rainfall, the detection box 15 moves downward due to the weight of the accumulated rainwater. This causes the steel frame 7 to move via the pull line 10, which in turn causes the soft protective part 8 to unfold and wrap around the plant in the plant box 4, preventing damage to the plant from heavy rain, strong winds or falling objects and ensuring the healthy growth of the plant. Automatic rainwater collection and utilization reduces maintenance costs. Channel 17 and Channel 22 are connected, and the cover of the shield 19 can be removed when the detection box 15 moves down, so that rainwater can smoothly enter the rain chamber 21 and be stored in the rain box 20, providing a reusable water source for subsequent irrigation and cooling, and reducing the consumption of external water resources. Intelligent irrigation ensures stable water supply to plants. In hot weather, solar heating causes thermal expansion component 27 to extend, which opens valve 28. Rainwater in rain chamber 21 enters liquid preparation chamber 26 through channel 4 25. Float 31 drives pump body 32 to move upward. Double-sloped self-rebound button 37 triggers pump body 32 to work. Rainwater is sprayed onto plant box 4 through outlet pipe 35, main pipe 13 and irrigation pipe assembly 12 to achieve automatic irrigation and prevent plants from lacking water. To achieve roof cooling and improve indoor comfort, the rainwater sprayed by the branch pipe 14 covers the surface of the roof wall 1 and gradually evaporates. The evaporation process absorbs a large amount of heat, thereby reducing the surface temperature of the roof 1, reducing heat conduction into the room, improving the comfort of the people inside the room, and reducing air conditioning energy consumption. To achieve intermittent circulating irrigation and extend the rainwater utilization cycle, branch pipe 14 introduces water into heat tank 23 to cool the thermal expansion component 27, causing it to shrink and reset. Valve 28 closes channel four 25, thereby stopping rainwater from entering the liquid preparation chamber 26. Rainwater flows back to rain chamber 21 through channel three 24. With the start and stop of pump body 32, intermittent release and circulating irrigation of rainwater are achieved, extending the rainwater utilization cycle. With the anti-clogging design, the maintenance difficulty is reduced. The shield 19 covers the channel 22 when there is no rain, preventing debris from falling into the rain chamber 21 and causing blockage. At the same time, a filter screen is installed in the temporary storage chamber 16, which can effectively intercept impurities, reduce the cleaning frequency, and maintain the long-term stable operation of the system. The system achieves automatic component reset and high structural durability. After the rain stops, the detection box 15 moves upward and resets under the action of the elastic element 6, and the steel frame 7 and soft protective element 8 return to the folded state to avoid shading the plants for a long time and ensure that photosynthesis can proceed smoothly. At the same time, the pump body 32 and the float 31 automatically move downward and stop pumping after the water level drops, realizing full-process automatic control and reducing manual intervention.

[0051] The components, modules, mechanisms, and devices in this invention that are not described in detail are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A roof waterproofing system based on a steel structure, characterized in that, The system includes a roof and a protective roof. The protective roof is fixed to the roof wall, which is covered with a thermoplastic polyolefin waterproof layer. A gap is reserved between the bottom wall of the protective roof and the roof wall. A plant box is embedded in the protective roof, and a plant protection mechanism is connected to it. A detection box is slidably connected to the side wall of the protective roof. A temporary storage cavity is opened in the detection box, and the bottom wall of the temporary storage cavity is connected to the bottom wall of the detection box through channel one. The detection box is connected to the plant protection mechanism. A rain box is fixed to the side wall of the roof, and a rain cavity is opened in the rain box. The rain cavity is connected to the top wall of the rain box through channel two, and channel one is located directly above channel two.

2. The roof waterproofing system based on a steel structure according to claim 1, characterized in that, The plant protection mechanism includes a vertical steel plate, a steel frame, a soft protective component, a sealing steel plate, and a pull wire. The vertical steel plate, the sealing steel plate, and two guide wheels are all fixed to the protective top. The steel frame is slidably connected to the protective top. The soft protective component is connected between the steel frame and the vertical steel plate. The steel frame is connected to the vertical steel plate through an elastic component. A pull wire is fixed to the steel frame. After being guided by the two guide wheels, the pull wire is fixed to the detection box.

3. The roof waterproofing system based on a steel structure according to claim 2, characterized in that, The rain box is equipped with a heat tank and a liquid preparation chamber. The rain chamber is connected to the heat tank through channel three and to the liquid preparation chamber through channel four. The heat tank is connected to channel four through channel five. A thermal expansion member is fixed to the inner wall of the heat tank, and a valve is fixed to the thermal expansion member. The valve is slidably connected to the inner wall of channel five and has a through hole. A float is slidably connected to the inner wall of the liquid preparation chamber, and a pump body is fixed to the float. A main pipe is fixed to the protective top, and an irrigation pipe assembly and two or more branch pipes are fixed to the main pipe. The irrigation pipe assembly extends above the plant box, and the lower ends of the branch pipes extend below the protective top. One of the branch pipes is located directly above the heat tank. The liquid outlet pipe on the pump body is fixed to the main pipe and is made of soft material.

4. The roof waterproofing system based on a steel structure according to claim 3, characterized in that, The pump body is movably connected to a double-sloped self-rebound button. The inner wall of the liquid preparation chamber is fixedly connected to a sloped component one and a support block. A sloped component two is rotatably connected to the support block. The sloped surface of the sloped component one faces downward, and the sloped surface of the sloped component two faces upward.

5. A roof waterproofing system based on a steel structure according to claim 4, characterized in that, The top wall of the rain box is slidably connected to a baffle plate, and the bottom wall of the detection box is rotatably connected to a linkage bar, with the lower end of the linkage bar rotatably connected to the top wall of the baffle plate.

6. A roof waterproofing system based on a steel structure according to claim 5, characterized in that, The inner wall of the temporary storage chamber is equipped with a filter screen.

7. A roof waterproofing system based on a steel structure according to any one of claims 1-6, characterized in that, The top wall of the protective roof is provided with a drainage groove.

8. A roof waterproofing system based on a steel structure according to claim 7, characterized in that, The protective roof is inlaid with photovoltaic panels.

9. A roof waterproofing system based on a steel structure according to claim 8, characterized in that, The roof wall is sloping.

10. A roof waterproofing system based on a steel structure according to claim 9, characterized in that, The protective top sidewall is provided with a limiting component, which is used to limit the movement of the detection box.

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