Large-span steel structure roof

Abstract

The application relates to the field of buildings, in particular to a large-span steel structure ceiling which comprises a ceiling body, drainage groove bodies are fixedly installed on the two sides of the ceiling body, the top side of the ceiling body gradually decreases in an arc shape from the middle to the drainage groove bodies on the two sides, a first supporting column is fixedly installed on the bottom side of one end of the drainage groove body, a second supporting column is fixedly installed on the bottom side of the other end of the drainage groove body, a first winding disc is rotationally installed on the first supporting column, a second winding disc is rotationally installed on the second supporting column, a pull rope is installed between the first winding disc and the second winding disc, a brush is arranged on the top side of the ceiling body, and the two ends of the brush are fixedly connected with the pull rope. The application has the effect of conveniently cleaning the top side of the steel structure ceiling.

Description

Technical Field

[0001] This application relates to the field of architecture, and in particular to a large-span steel structure roof. Background Technology

[0002] Steel-framed roofs are commonly used in factories, plantations, and recreational areas in plazas. These areas typically require ample natural light, so they are usually supported by steel frames, with glass panels installed on top. Dust accumulates on the top of the steel-framed roof, necessitating regular cleaning to maintain its light transmission.

[0003] During rainy days, rainwater falls onto the top sides of the steel structure roof. Large-span steel structure roofs have a large area, resulting in significant rainwater accumulation, which can potentially damage the roof under the weight of the rainwater. To reduce this risk, the top sides of steel structure roofs are typically curved to facilitate rainwater drainage. However, this curved shape also makes it difficult for cleaning personnel to stand on the top sides of the steel structure roof, increasing the difficulty of cleaning. Summary of the Invention

[0004] To facilitate the cleaning of the top side of the steel structure roof, this application provides a large-span steel structure roof.

[0005] This application provides a large-span steel structure roof, which adopts the following technical solution:

[0006] A large-span steel structure canopy includes a canopy body. Drainage channels are fixedly installed on both sides of the canopy body. The top side of the canopy body gradually decreases in an arc shape from the middle to the drainage channels on both sides. A first support column is fixedly installed on the bottom side of one end of the drainage channel, and a second support column is fixedly installed on the bottom side of the other end of the drainage channel. A first winding reel is rotatably installed on the first support column, and a second winding reel is rotatably installed on the second support column. A pull rope is installed between the first winding reel and the second winding reel. A brush is provided on the top side of the canopy body, and the two ends of the brush are fixedly connected to the pull rope.

[0007] By employing the above technical solution, when cleaning the top side of the steel structure ceiling requires rotation of the first and second winding reels. The first winding reel unwinds its pull rope, while the second winding reel winds it up, causing the brush to move from the side of the ceiling body closest to the second winding reel to the other side; conversely, the first winding reel winds its pull rope up, while the second winding reel unwinds its pull rope, causing the brush to move from the side of the ceiling body closest to the first winding reel to the other side. This back-and-forth movement of the brush on the top side of the ceiling facilitates the cleaning of dust from the steel structure ceiling.

[0008] Optionally, a first shielding box is fixedly installed on the side of the first support column away from the second support column. A first rotating rod is provided inside the first shielding box, and a first take-up reel is fixedly sleeved on the first rotating rod. Both ends of the first rotating rod are rotatably inserted into the inner sidewall of the first shielding box. A second shielding box is fixedly installed on the side of the second support column away from the first support column. A second rotating rod is provided inside the second shielding box, and a second take-up reel is fixedly sleeved on the second rotating rod. Both ends of the second rotating rod are rotatably inserted into the inner sidewall of the second shielding box. The pull rope slides through the top side of the first shielding box and the top side of the second shielding box.

[0009] By adopting the above technical solution, the first shielding box is used to protect the first winding reel, and the second shielding box is used to protect the second winding reel, thereby reducing the occurrence of damage to the first and second winding reels from sun exposure.

[0010] Optionally, the drainage trough is inclined, gradually rising from one end near the first take-up reel to the other. The first shielding box is vertically equipped with a drainage pipe, which is fixedly installed through the top and bottom sides of the first shielding box. A water collection trough is fixedly installed at the top of the drainage pipe, and the drainage pipe is connected to the water collection trough. The top side of the water collection trough is flush with the inner bottom wall of the drainage trough. A first baffle is fixedly installed at the end of the drainage trough near the second take-up reel. The first baffle is used to restrict water from being discharged from the end of the drainage trough near the second take-up reel.

[0011] By adopting the above technical solution, after rainwater flows from the top side of the roof body into the drainage trough, the rainwater is guided by the inclined direction of the drainage trough and blocked by the first baffle plate, causing the rainwater to fall from the drainage trough into the collection trough. Then, the drain pipe drains the water from the collection trough. The rainwater flows sequentially through the roof body, drainage trough, collection trough, and drain pipe before being discharged, thus facilitating the centralized discharge of rainwater falling on the roof body.

[0012] Optionally, a counterweight box is slidably mounted on the side of the first support column away from the second support column, the top side of the counterweight box has an opening, and the counterweight box is located below the first shielding box. A counterweight block is slidably mounted on the side of the second support column away from the first support column, and the counterweight block is located below the second shielding box. A rack is fixedly mounted between the top side of the counterweight box and the top side of the counterweight block. The rack slides sequentially through the bottom side of the first shielding box, the side of the first shielding box near the first support column, the first support column, the second support column, the side of the second shielding box near the second support column, and the bottom side of the second shielding box.

[0013] The first shielding box (9) is equipped with a first transmission assembly (20). The first transmission assembly (20) is used to drive the first winding reel (13) to descend and wind up with the counterweight box (17), and to rise and unwind with the counterweight box (17).

[0014] The second shield box (10) is equipped with a second transmission assembly (21). The second transmission assembly (21) is used to drive the second winding reel (14) to descend and wind up with the counterweight (18), and to rise and unwind with the counterweight (18).

[0015] By adopting the above technical solution, water falls from the drain pipe into the counterweight box, thereby increasing the weight of the counterweight box. The counterweight box then descends, and the counterweight block rises via a rack and pinion mechanism. As the counterweight box descends, the first transmission assembly drives the first take-up reel to wind up the pull rope; as the counterweight block descends, the second transmission assembly drives the second take-up reel to unwind the pull rope, thereby moving the brush from one side of the ceiling body closest to the second take-up reel to the other side, thus facilitating cleaning of the top side of the ceiling body.

[0016] The water inside the counterweight box is drained, reducing its weight. The counterweight then descends, and via a rack and pinion mechanism, it raises the counterweight box. As the counterweight box rises, the first transmission assembly drives the first take-up reel to unwind the pull rope; as the counterweight descends, the second transmission assembly drives the second take-up reel to wind up the pull rope, thus moving the brush from the side of the ceiling body closest to the first take-up reel to the other side, facilitating cleaning of the top side of the ceiling body.

[0017] During rainy weather, rainwater automatically enters the counterweight box through the drain pipe, facilitating the automatic cleaning of the top side of the ceiling by the brushes. When it is not raining and cleaning of the ceiling is needed, water is sprayed onto the top side of the ceiling, and the water also flows into the counterweight box. Wetting the top side of the ceiling further enhances the cleaning effect.

[0018] Optionally, the first transmission assembly includes a first drive rod, a first gear, a second gear, and a third gear. Both ends of the first drive rod are rotatably inserted into the inner side wall of the first shielding box. The first gear and the second gear are fixedly sleeved on the first drive rod, and the third gear is fixedly sleeved on the first rotating rod. The first gear meshes with the third gear, and the diameter of the first gear is larger than the diameters of the second gear and the third gear. The second gear meshes with a rack.

[0019] By adopting the above technical solution, when the counterweight box is raised or lowered, the first drive rod rotates through the engagement of the rack and pinion and the second gear. The first drive rod drives the first gear to rotate. The first gear meshes with the third gear, thereby causing the first rotating rod to rotate. The first rotating rod drives the first winding reel to rotate, thus facilitating the driving of the first winding reel to wind or unwind the rope.

[0020] Optionally, the second transmission assembly includes a second drive rod, a fourth gear, a fifth gear, and a sixth gear. Both ends of the second drive rod are rotatably inserted into the inner side wall of the second shielding box. The fourth gear and the fifth gear are fixedly sleeved on the second drive rod, and the sixth gear is fixedly sleeved on the second rotating rod. The fourth gear meshes with the sixth gear, and the diameter of the fourth gear is larger than the diameters of the fifth gear and the sixth gear. The fifth gear meshes with a rack.

[0021] By adopting the above technical solution, when the counterweight is raised or lowered, the second drive rod rotates through the engagement of the rack and pinion with the fifth gear. The second drive rod drives the fourth gear to rotate. The fourth gear meshes with the sixth gear, thereby causing the second rotating rod to rotate. The second rotating rod drives the second winding reel to rotate, thus facilitating the winding or unwinding of the rope by driving the second winding reel.

[0022] Optionally, a drain outlet is provided on the bottom side of the counterweight box, and a counterweight plate is hinged to the inner bottom wall of the counterweight box. The counterweight plate is used to open and close the drain outlet. A first base is fixedly installed on the side of the first support column away from the second support column. Multiple support blocks are fixedly installed on the top side of the first base. A top rod is vertically installed on the top side of the first base. The top rod and the support blocks are both located below the counterweight box. The top rod is located within the area covered by the projection of the drain outlet along the height direction, and the support blocks are located outside the area covered by the projection of the drain outlet along the height direction.

[0023] By adopting the above technical solution, when the counterweight box rises, the counterweight plate rotates downwards and blocks the drain outlet. After the counterweight box descends, the push rod and the plug press against each other, causing the counterweight plate to flip upwards and open the drain outlet, thus facilitating the discharge of water from inside the counterweight box.

[0024] Optionally, a first magnetic block is embedded on the top side of the first base, and the first magnetic block is used to attract the counterweight box.

[0025] By adopting the above technical solution, the first magnetic block attracts the counterweight box, thereby reducing the situation where the counterweight box is lifted after some water is discharged.

[0026] Optionally, a second base is fixedly installed on the side of the second support column away from the first support column, and a second magnetic block is fixedly installed on the top side of the second base. The second magnetic block is located below the counterweight and is used to attract the counterweight.

[0027] By employing the above technical solution, when water falls into the counterweight box, the water impacts the counterweight box, causing it to experience a downward force. The attraction between the second magnetic block and the counterweight reduces the likelihood of the counterweight being lifted due to insufficient water volume inside the box.

[0028] Optionally, a second baffle plate is fixedly installed on the top side of the drainage trough away from the edge of the ceiling body, and the second baffle plate is inclined towards the ceiling body.

[0029] By adopting the above technical solution, the second shield is used to shield the pull rope located inside the drainage trough, thereby reducing the occurrence of damage to the pull rope due to sun exposure.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The pull rope is wound up and down by the first and second reels, so that the brush can move on the top side of the ceiling body for cleaning, thus facilitating the cleaning of the top side of the steel structure ceiling;

[0032] 2. When it rains, rainwater on the top side of the canopy body is discharged into the counterweight box through the drainage channel, water collection channel and drainage pipe, increasing the weight of the counterweight box. Then the counterweight box descends, and the counterweight box drives the counterweight block to rise through the rack and pinion. When the counterweight box descends, it drives the first winding reel to wind up the pull rope through the first transmission component. When the counterweight block rises, it drives the second winding reel to unwind the pull rope through the second transmission component. This causes the brush to move from the side of the canopy body closest to the second winding reel to the other side. After that, the water inside the counterweight box is discharged, and the brush moves in the opposite direction, which makes it convenient for the brush to automatically clean the top side of the canopy body during rainy weather. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0034] Figure 2 This is a structural schematic diagram of the first support column and the second support column from a first perspective according to an embodiment of this application;

[0035] Figure 3 This is a structural schematic diagram of the first and second support columns from a second perspective in an embodiment of this application;

[0036] Figure 4 This is a cross-sectional view of the first support column and the first shielding box according to an embodiment of this application;

[0037] Figure 5 yes Figure 4 Enlarged view at point A;

[0038] Figure 6 This is a cross-sectional view of the second support column and the second shielding box according to an embodiment of this application;

[0039] Figure 7 yes Figure 6 Enlarged view at point B;

[0040] Figure 8 yes Figure 4 Enlarged view at point C

[0041] Explanation of reference numerals in the attached drawings: 1. Canopy body; 2. Drainage trough; 3. First shield; 4. Second shield; 5. Water collection trough; 6. Drainage pipe; 7. First support column; 8. Second support column; 9. First shield box; 10. Second shield box; 11. First rotating rod; 12. Second rotating rod; 13. First winding reel; 14. Second winding reel; 15. Pull rope; 16. Brush; 17. Counterweight box; 18. Counterweight block; 19. Rack; 2 0. First transmission assembly; 201. First drive rod; 202. First gear; 203. Second gear; 204. Third gear; 21. Second transmission assembly; 211. Second drive rod; 212. Fourth gear; 213. Fifth gear; 214. Sixth gear; 22. Drain outlet; 23. Counterweight plate; 24. First base; 25. Second base; 26. Support block; 27. Top rod; 28. First magnet; 29. ​​Second magnet. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0043] This application discloses a large-span steel structure roof.

[0044] Reference Figure 1 A large-span steel structure roof includes a roof body 1, with drainage channels 2 fixedly installed on both sides of the roof body 1. The top side of the roof body 1 gradually slopes downwards from the center towards the drainage channels 2, forming an arc shape. When it rains, rainwater falls into the top side of the roof body 1, then flows from the top side of the roof body 1 into the drainage channels 2, and is subsequently discharged from the drainage channels 2, thereby reducing the possibility of rainwater damaging the roof body 1.

[0045] Reference Figure 2 , Figure 3 The drainage trough 2 is inclined, gradually decreasing in elevation from one end to the other. A first baffle plate 3 is fixedly installed at the high end of the drainage trough 2. A water collection trough 5 is fixedly installed at the low end of the drainage trough 2, with its top side flush with the inner bottom wall of the drainage trough 2. A drain pipe 6 is fixedly installed at the bottom side of the water collection trough 5, and is vertically arranged. When water is inside the drainage trough 2, it is guided by the inclination of the drainage trough 2 and blocked by the first baffle plate 3, causing the water to drain from the low end of the drainage trough 2 to the water collection trough 5. Afterward, the water inside the water collection trough 5 is discharged through the drain pipe 6.

[0046] Reference Figure 1 A first support column 7 is fixedly installed on the bottom side of the lower end of the drainage trough 2, and a second support column 8 is fixedly installed on the bottom side of the upper end of the drainage trough 2. The first support column 7 and the second support column 8 are used to support the drainage trough 2.

[0047] Reference Figure 4 , Figure 5 A first shielding box 9 is fixedly installed on the side of the first support column 7 away from the second support column 8. The first shielding box 9 is equipped with a first rotating rod 11 and a first take-up reel 13. Both ends of the first rotating rod 11 are rotatably inserted into the inner side wall of the first shielding box 9, and the first take-up reel 13 is fixedly sleeved on the first rotating rod 11.

[0048] Reference Figure 6 , Figure 7 A second shielding box 10 is fixedly installed on the side of the second support column 8 away from the first support column 7. The second shielding box 10 is equipped with a second rotating rod 12 and a second take-up reel 14. Both ends of the second rotating rod 12 are rotatably inserted into the inner side wall of the second shielding box 10, and the second take-up reel 14 is fixedly sleeved on the second rotating rod 12.

[0049] Reference Figure 5 , Figure 7 A pull rope 15 is connected between the first take-up reel 13 and the second take-up reel 14. The pull rope 15 slides through the top side of the first shielding box 9 and the second shielding box 10.

[0050] Reference Figure 1 , Figure 2 The pull rope 15 is arranged inside the drainage trough 2. A second shield 4 is fixedly installed on the top side of the drainage trough 2 away from the edge of the ceiling body 1. The second shield 4 is inclined towards the ceiling body 1. The second shield 4 is used to shield the top side of the drainage trough 2, thereby reducing the possibility of damage to the pull rope 15 inside the drainage trough 2 under sunlight.

[0051] Reference Figure 1 , Figure 2 A brush 16 is fixedly installed between the pull ropes 15 on both sides of the ceiling body 1, and the brush 16 is attached to the top side of the ceiling body 1.

[0052] Reference Figure 1 , Figure 5 , Figure 7 Rotate the first winding reel 13 and the second winding reel 14, causing the first winding reel 13 to wind up the pull rope 15 and the second winding reel 14 to unwind the pull rope 15, thereby moving the brush 16 from the side of the ceiling body 1 closest to the second winding reel 14 to the other side; then, cause the first winding reel 13 to unwind the pull rope 15 and the second winding reel 14 to wind up the pull rope 15, thereby moving the brush 16 from the side of the ceiling body 1 closest to the first winding reel 13 to the other side. By moving the brush 16 back and forth on the top side of the ceiling body 1 for cleaning, the need for cleaning personnel to stand on the top side of the ceiling body 1 for cleaning is reduced, thus facilitating the cleaning of the top side of the steel structure ceiling.

[0053] Reference Figure 4 , Figure 8 A counterweight box 17 is installed on the side of the first support column 7 away from the second support column 8, and the top side of the counterweight box 17 has an opening. The counterweight box 17 is located below the first shielding box 9, and a drain pipe 6 is fixedly installed through the top and bottom sides of the first shielding box 9, with the drain pipe 6 draining water towards the counterweight box 17.

[0054] Reference Figure 6 A counterweight 18 is mounted on the side of the second support column 8 away from the first support column 7, and the counterweight 18 is located below the second shielding box 10. A rack 19 is fixedly installed between the top side of the counterweight box 17 and the top side of the counterweight 18.

[0055] Reference Figure 5 , Figure 7 The rack 19 slides through the bottom side of the first shielding box 9, the side of the first shielding box 9 near the first support column 7, the first support column 7, the second support column 8, the side of the second shielding box 10 near the second support column 8, and the bottom side of the second shielding box 10 in sequence.

[0056] After water is drained from the drain pipe 6 into the counterweight box 17, the weight of the counterweight box 17 increases, causing it to move downwards. Then, the counterweight box 17 pulls the counterweight block 18 upwards via the rack 19. After the water is drained from the counterweight box 17, its weight decreases, causing the counterweight block 18 to move downwards. Then, the counterweight block 18 pulls the counterweight box 17 upwards via the rack 19.

[0057] Reference Figure 5 The first shielding box 9 is internally equipped with a first transmission assembly 20, which includes a first drive rod 201, a first gear 202, a second gear 203, and a third gear 204. Both ends of the first drive rod 201 are rotatably inserted into the inner wall of the first shielding box 9. The first gear 202 and the second gear 203 are both fixedly sleeved on the first drive rod 201. The third gear 204 is fixedly sleeved on the first rotating rod 11, and the first gear 202 meshes with the third gear 204. The diameter of the first gear 202 is larger than the diameters of the second gear 203 and the third gear 204. The second gear 203 meshes with the rack 19.

[0058] Reference Figure 7The second shielding box 10 contains a second transmission assembly 21, which includes a second drive rod 211, a fourth gear 212, a fifth gear 213, and a sixth gear 214. Both ends of the second drive rod 211 are rotatably inserted into the inner wall of the second shielding box 10. The fourth gear 212 and the fifth gear 213 are fixedly sleeved on the second drive rod 211. The sixth gear 214 is fixedly sleeved on the second rotating rod 12, and the fourth gear 212 meshes with the sixth gear 214. The diameter of the fourth gear 212 is larger than the diameters of the fifth gear 213 and the sixth gear 214. The fifth gear 213 meshes with the rack 19.

[0059] When it rains, rainwater flows from drain pipe 6 to counterweight box 17, increasing its weight and causing it to move downwards, while counterweight block 18 moves upwards. Counterweight box 17 drives second gear 203 to rotate via rack 19. Second gear 203, through first rotating rod 11, first gear 202, third gear 204, and first drive rod 201, drives first winding reel 13 to wind up pull rope 15. Counterweight block 18 drives fifth gear 213 to rotate via rack 19. Fifth gear 213, through second rotating rod 12, fourth gear 212, sixth gear 214, and second drive rod 211, drives second winding reel 14 to unwind pull rope 15. The first take-up reel 13 winds up the pull rope 15, and the second take-up reel 14 unwinds the pull rope 15, thereby moving the brush 16 from one side of the ceiling body 1 closest to the second take-up reel 14 to the other side, thus facilitating the automatic cleaning of the top side of the ceiling body 1 by the brush 16 in rainy weather.

[0060] After the rainwater in the counterweight box 17 is drained, the weight of the counterweight box 17 decreases, causing it to move upwards and the counterweight block 18 to move downwards. The counterweight box 17 drives the second gear 203 to rotate via the rack 19. The second gear 203 is then driven by the first rotating rod 11, the first gear 202, the third gear 204, and the first drive rod 201, causing the first take-up reel 13 to unwind the pull rope 15. The counterweight block 18 drives the fifth gear 213 to rotate via the rack 19. The fifth gear 213 is then driven by the second rotating rod 12, the fourth gear 212, the sixth gear 214, and the second drive rod 211, causing the second take-up reel 14 to wind up the pull rope 15. By unwinding the pull rope 15 via the first take-up reel 13 and winding it up via the second take-up reel 14, the brush 16 moves from the side of the ceiling body 1 closest to the first take-up reel 13 to the other side, thus facilitating the brush 16 to clean the top side of the ceiling body 1 again.

[0061] The diameter of the first gear 202 is larger than the diameters of the second gear 203 and the third gear 204, which facilitates the first drive rod 201 to rotate one revolution and the first rotating rod 11 to rotate more than one revolution. This, in turn, increases the length of the winding rope 15 of the first winding reel 13 when the counterweight box 17 is raised or lowered. By increasing the length of the winding rope 15 of the first winding reel 13, the movement area of ​​the brush 16 on the top side of the ceiling is increased.

[0062] The diameter of the fourth gear 212 is larger than that of the fifth gear 213 and the sixth gear 214, which facilitates the second drive rod 211 to rotate one revolution and the second rotating rod 12 to rotate more than one revolution. This, in turn, increases the length of the winding and unwinding rope 15 of the second winding reel 14 when the block box is raised and lowered. By increasing the length of the winding and unwinding rope 15 of the second winding reel 14, the movement area of ​​the brush 16 on the top side of the ceiling is increased.

[0063] Reference Figure 8 The counterweight box 17 has a drain outlet 22 on its bottom side, and a counterweight plate 23 is hinged to the inner bottom wall of the counterweight box 17. When the counterweight plate 23 is flipped downwards, it abuts against the inner bottom wall of the counterweight box 17 and covers the drain outlet 22, thereby sealing the drain outlet 22. When the counterweight plate 23 is flipped upwards, the drain outlet 22 is opened, thus facilitating the drainage of water from inside the counterweight box 17.

[0064] Reference Figure 8 A first base 24 is fixedly installed on the side of the first support column 7 away from the second support column 8. Multiple support blocks 26 are fixedly installed on the top side of the first base 24. A top rod 27 is vertically installed on the top side of the first base 24. Both the top rod 27 and the support blocks 26 are located below the counterweight box 17. The top rod 27 is located within the area covered by the projection of the drain outlet 22 along the height direction, while the support blocks 26 are located outside the area covered by the projection of the drain outlet 22 along the height direction.

[0065] After the counterweight box 17 descends, it abuts against the support block 26, and the top rod 27 presses against the counterweight plate 23, causing the counterweight plate 23 to flip upwards, and the water inside the counterweight box 17 is discharged from the drain outlet 22. The automatic discharge of water from the counterweight box 17 facilitates the back-and-forth movement of the brush 16 in rainy weather, thereby improving the cleaning effect of the brush 16 on the top side of the ceiling body 1.

[0066] Reference Figure 8 A first magnet 28 is embedded on the top side of the first base 24. The first magnet 28 is used to attract the counterweight box 17. When the water inside the counterweight box 17 is discharged from the drain outlet 22, the first magnet 28 attracts the counterweight box 17. Due to the magnetic force between the first magnet 28 and the counterweight box 17, the water inside the counterweight box 17 is lowered, and the counterweight box 17 rises.

[0067] If the counterweight box 17 rises after discharging some water, the drain pipe 6 continues to drain water into the counterweight box 17 during the rising process, which causes the counterweight box 17 to fall before reaching the top, thus facilitating the movement of the brush 16 to cover the top side of the ceiling body 1.

[0068] Reference Figure 6 A second base 25 is fixedly installed on the side of the second support column 8 away from the first support column 7, and a second magnet 29 is fixedly installed on the top side of the second base 25. The second magnet 29 is located below the counterweight 18 and is used to attract the counterweight 18.

[0069] When water enters the counterweight box 17 from the drain pipe 6, it exerts a downward impact force on the counterweight box 17. When the combined force of the water inside the counterweight box 17 and the impact force on the counterweight box 17 just causes the counterweight block 18 to rise, but this impact is intermittent, the counterweight box 17 will cause the counterweight block 18 to rise a certain distance before it descends again. The second magnet 29 holds the counterweight block 18 in place. When the counterweight box 17 just causes the counterweight block 18 to rise, the attraction of the second magnet 29 to the counterweight block 18 decreases, thus compensating for the intermittent impact force of the water on the counterweight box 17, and thus facilitating a stable ascent of the counterweight box 17 to the counterweight block 18.

[0070] The implementation principle of a large-span steel structure canopy according to this application embodiment is as follows: During rainy weather, rainwater enters the counterweight box 17 from the drain pipe 6, thereby increasing the weight of the counterweight box 17. After the weight of the counterweight box 17 increases, the counterweight box 17 moves downward, and the counterweight box 17 drives the counterweight block 18 to move upward through the rack 19. When the counterweight box 17 descends and abuts against the support block 26, the top rod 27 pushes the counterweight plate 23 to flip upward, thereby draining the water inside the counterweight box 17. After the water inside the counterweight box 17 is drained, the counterweight block 18 descends, and the counterweight block 18 drives the counterweight box 17 to rise through the rack 19, thus facilitating the repeated raising and lowering of the counterweight block 18 and the counterweight box 17 during rainy weather.

[0071] The counterweight box 17 and the counterweight block 18 are repeatedly raised and lowered in rainy weather. The counterweight box 17 drives the first winding reel 13 to repeatedly wind and unwind the pull rope 15 through the first transmission component 20. The counterweight block 18 drives the second winding reel 14 to repeatedly wind and unwind the pull rope 15 through the second transmission component 21. The winding and unwinding states of the pull rope 15 of the first winding reel 13 and the second winding reel 14 are opposite, so that the brush 16 moves back and forth on the top side of the ceiling body 1, which facilitates cleaning the top side of the steel structure ceiling.

[0072] The first reel 13 and the second reel 14 reel in and unreel the pull rope 15, thereby allowing the brush 16 to move on the top side of the ceiling body 1 for cleaning, thus facilitating cleaning.

[0073] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A long-span steel structure ceiling, characterized by: The utility model relates to a roof body (1) is provided with drain groove body (2) on both sides, the top side of roof body (1) is gradually reduced to the arc shape from the drain groove body (2) of both sides to the middle, the bottom side of one end of drain groove body (2) is fixedly installed with first support column (7), the bottom side of the other end of drain groove body (2) is fixedly installed with second support column (8), first support column (7) is rotatably installed with first winding disc (13), second support column (8) is rotatably installed with second winding disc (14), and first winding disc (13) and second winding disc (14) are installed with pull rope (15), the top side of roof body (1) is provided with brush (16), and both ends of brush (16) are fixedly connected with pull rope (15); The side of first support column (7) away from second support column (8) is fixedly installed with first shielding box (9), first shielding box (9) is provided with first rotating rod (11) in the inside, first winding disc (13) is fixedly sleeved on first rotating rod (11), both ends of first rotating rod (11) are rotatably inserted into the inner side wall of first shielding box (9), the side of second support column (8) away from first support column (7) is fixedly installed with second shielding box (10), second shielding box (10) is provided with second rotating rod (12) in the inside, second winding disc (14) is fixedly sleeved on second rotating rod (12), both ends of second rotating rod (12) are rotatably inserted into the inner side wall of second shielding box (10), pull rope (15) is slidably penetrated through the top side of first shielding box (9) and the top side of second shielding box (10); The drain groove body (2) is gradually raised and arranged in an inclined manner from one end close to the first winding disc (13) to the other end, the first shielding box (9) is vertically provided with a drain pipe (6), the drain pipe (6) is fixedly penetrated through the top side and the bottom side of the first shielding box (9), the top end of the drain pipe (6) is fixedly installed with a water collecting groove (5), the drain pipe (6) is communicated with the water collecting groove (5), the top side of the water collecting groove (5) is flush with the inner bottom wall of the drain groove body (2), the one end close to the second winding disc (14) of the drain groove body (2) is fixedly installed with a first shielding plate (3), the first shielding plate (3) is used for limiting water from the one end close to the second winding disc (14) of the drain groove body (2) to drain out. The counterweight box (17) is installed on the side of the first supporting column (7) away from the second supporting column (8) and is lifted and slid, the top side of the counterweight box (17) is provided with an opening, the counterweight box (17) is located below the first shielding box (9), the counterweight block (18) is installed on the side of the second supporting column (8) away from the first supporting column (7) and is lifted and slid, the counterweight block (18) is located below the second shielding box (10), the top side of the counterweight box (17) and the top side of the counterweight block (18) are fixedly installed with a rack (19), the rack (19) is sequentially slid through the bottom side of the first shielding box (9), the side of the first shielding box (9) close to the first supporting column (7), the first supporting column (7), the second supporting column (8), the side of the second shielding box (10) close to the second supporting column (8) and the bottom side of the second shielding box (10); The first shielding box (9) is internally provided with a first transmission assembly (20), and the first transmission assembly (20) is used for driving the first winding disc (13) to be wound with the counterweight box (17) descending and unwound with the counterweight box (17) ascending; The second shielding box (10) is internally provided with a second transmission assembly (21), and the second transmission assembly (21) is used for driving the second winding disc (14) to be wound with the counterweight block (18) descending and unwound with the counterweight block (18) ascending.

2. A roof of large-span steel structure according to claim 1, characterized in that: The first transmission assembly (20) comprises a first driving rod (201), a first gear (202), a second gear (203) and a third gear (204), both ends of the first driving rod (201) are rotatably inserted into the inner side wall of the first shielding box (9), the first gear (202) and the second gear (203) are fixedly sleeved on the first driving rod (201), the third gear (204) is fixedly sleeved on the first rotating rod (11), the first gear (202) is engaged with the third gear (204), the diameter of the first gear (202) is greater than that of the second gear (203) and the third gear (204), and the second gear (203) is engaged with the rack (19).

3. The large-span steel structure roof according to claim 1, characterized in that: The second transmission assembly (21) comprises a second driving rod (211), a fourth gear (212), a fifth gear (213) and a sixth gear (214), both ends of the second driving rod (211) are rotatably inserted into the inner side wall of the second shielding box (10), the fourth gear (212) and the fifth gear (213) are fixedly sleeved on the second driving rod (211), the sixth gear (214) is fixedly sleeved on the second rotating rod (12), the fourth gear (212) is engaged with the sixth gear (214), the diameter of the fourth gear (212) is greater than that of the fifth gear (213) and the sixth gear (214), and the fifth gear (213) is engaged with the rack (19).

4. The large-span steel structure roof according to claim 1, characterized in that: The bottom side of the counterweight box (17) is provided with a drainage port (22), and the inner bottom wall of the counterweight box (17) is hinged with a counterweight plate (23) for opening and closing the drainage port (22).

5. A roof of large-span steel structure according to claim 4, characterized in that: The top side of the first base (24) is embedded with a first magnetic block (28) for attracting the counterweight box (17).

6. The long-span steel structure ceiling according to claim 1, characterized in that: The side of the second support column (8) away from the first support column (7) is fixedly installed with a second base (25), and the top side of the second base (25) is fixedly installed with a second magnetic block (29) below the counterweight block (18), and the second magnetic block (29) is used for attracting the counterweight block (18).

7. The large-span steel structure roof according to claim 1, characterized in that: The top side of the drainage groove body (2) away from the edge of the ceiling body (1) is fixedly installed with a second shielding plate (4), and the second shielding plate (4) is inclinedly arranged towards the ceiling body (1).

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