A building roof gutter cleaning device

Abstract

This invention provides a rooftop drainage channel cleaning device, relating to the field of building ancillary facility cleaning. The device includes two winches installed on the drainage channel, with a cleaning mechanism connected between the wire ropes of the two winches. The two winches control the cleaning mechanism to move along the drainage channel via the wire ropes. The cleaning mechanism includes several arc-shaped scrapers, a conveying cylinder, spiral blades, and a collection bin. The collection bin is installed at one end of the conveying cylinder, and the spiral blades are located inside the conveying cylinder. With this rooftop drainage channel cleaning device, the two winches work together to pull the cleaning mechanism along the drainage channel as a whole, eliminating the need for operators to work at heights segment by segment and frequently move around, significantly reducing safety hazards associated with working at heights and reducing labor intensity. The arc-shaped scrapers gather debris in the channel towards the center of the cleaning mechanism, and together with the conveying cylinder and spiral blades, automatically transport the debris to the collection bin.

Description

Technical Field

[0001] This invention relates to the field of cleaning building ancillary facilities, specifically a cleaning device for roof drainage channels of buildings. Background Technology

[0002] Roof gutters are an important part of a building's drainage system. Over time, they accumulate fallen leaves, silt, debris, and other contaminants, easily causing blockages and leading to problems such as roof leaks, damp walls, and structural corrosion. Therefore, regular cleaning of the gutters is necessary. Currently, the mainstream gutter cleaning tools on the market are cleaning shovels and long-handled brushes. Most roof gutters adopt a U-shaped eaves gutter structure with outward-curving edges. During long-term use, mud, lint, and other debris easily accumulate in the gutters. If not cleaned in time, this can easily cause blockages in the drain outlets, leading to problems such as roof water accumulation and leaks. Existing methods for cleaning roof gutters mainly rely on manual operation, using common cleaning tools such as long-handled brooms, shovels, and rakes.

[0003] Because existing cleaning tools require operators to hold the tools close to the roof eaves and bend over frequently when cleaning drainage channels, which is a dangerous high-altitude operation and is prone to safety accidents. At the same time, conventional cleaning tools require cleaning long drainage channels section by section, resulting in high labor intensity, time and effort, and low overall work efficiency, which cannot meet the needs of efficient and safe drainage channel cleaning. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a roof drainage channel cleaning device that is not only time-saving and labor-saving with high operating efficiency, but also has high safety.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a cleaning device for a building roof drainage channel, comprising two winches installed on the drainage channel, a cleaning mechanism installed between the steel wire ropes of the two winches, and the two winches controlling the cleaning mechanism to move along the drainage channel via the steel wire ropes; The cleaning mechanism includes several arc-shaped scrapers, a conveying cylinder, a spiral blade, and a collection bin. The collection bin is installed at one end of the conveying cylinder, the spiral blade is located inside the conveying cylinder, and the conveying cylinder is located in the central area of ​​the cleaning mechanism. When the several arc-shaped scrapers rotate, they gather impurities towards the central area, and when the spiral blade rotates, it discharges the impurities in the central area through the conveying cylinder into the collection bin.

[0006] Preferably, one end of the spiral blade has a conical structure, one end of the conveying cylinder is conical, the conical part of the spiral blade is located inside the conical end of the conveying cylinder, and a gap is left between the bottom end of the conveying cylinder and the inner bottom wall of the drainage trough.

[0007] Preferably, the bottom of the arc-shaped scraper is integrally formed with an arc-shaped scraper head that matches its shape, and the arc-shaped scraper head is used to contact the inner bottom wall of the drainage trough.

[0008] Preferably, one end of the arc-shaped scraper has a sharp structure and is used to contact the inner wall of the drainage trough.

[0009] Preferably, the cleaning mechanism further includes a handheld frame, a motor, and a rod. The motor is fixedly connected to the handheld frame, the output shaft of the motor is fixedly connected to one end of the rod, the shape of the rod is adapted to the spiral blade, and the outer surface of the rod is fixedly connected to the inner ring of the spiral blade.

[0010] Preferably, the handheld frame has two symmetrical slots and two symmetrical notches inside, and the ends of the wire ropes of the two winches are fixedly connected to limiters, which are placed in the slots through the notches.

[0011] Preferably, a grid wheel is fixedly connected to the inner wall of the conveying cylinder, and a shearing and mud-removing component for contacting the grid wheel is fixedly connected to the bottom of the rod.

[0012] Preferably, the cleaning mechanism further includes a fixed cylinder, a fixed disc, a first gear, and an adjusting component. The fixed cylinder is rotatably connected to the conveying cylinder and fixedly connected to the first gear. The outer side of the conveying cylinder has several circumferentially arranged threaded holes. The fixed cylinder is internally threaded with bolts, each bolt being threadedly connected to its adjacent threaded hole. One end of each arc-shaped scraper is fixedly connected to a fixing rod, which passes through the fixed disc and is rotatably connected to it. One end of the fixing rod is fixedly connected to the adjusting component. The outer edge of the adjusting component is integrally formed with several teeth that mesh with the first gear. The fixed disc has several arc-shaped grooves inside, and a fixing column is slidably connected in each arc-shaped groove. One end of the fixing column is fixedly connected to its adjacent arc-shaped scraper, and the other end is fixedly connected to its adjacent adjusting component.

[0013] Preferably, a baffle is rotatably connected to the outer surface of the rod, a second gear is fixedly connected to one end of the rod, a plurality of support members are fixedly connected to one end of the conveying cylinder, a gear ring is fixedly connected to the plurality of support members, and a third gear is rotatably mounted on the baffle, the third gear being meshed with the second gear and the gear ring.

[0014] Preferably, the height of the arc-shaped scraper is not less than the depth of the drainage trough.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The building roof drainage channel cleaning device uses two winches working together with steel wire ropes to move the cleaning mechanism along the entire drainage channel, eliminating the need for operators to work in sections at height and frequently walk around, greatly reducing the safety hazards of working at height, and reducing the intensity of manual labor. Through the cleaning mechanism, the arc-shaped scraper can gather the debris in the channel to the center of the cleaning mechanism, and with the help of the conveying cylinder and spiral blades, the debris is automatically transported to the collection bin. It integrates the functions of gathering, conveying and collecting, with a high degree of automation in cleaning, effectively improving the overall cleaning efficiency of long-distance drainage channels. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention installed on a drainage trough; Figure 2 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 3 This is a sectional view of the top view of the fixed cylinder of the present invention; Figure 4 This is a schematic diagram of the material conveying cylinder of the present invention; Figure 5 This is a cross-sectional view of the side view of the feed cylinder of the present invention; Figure 6 This is a partial structural diagram of the present invention; Figure 7 This is a schematic diagram of the arc-shaped scraper of the present invention; Figure 8 This is a bottom view of the adjusting component of the present invention; Figure 9 This is a schematic diagram showing the contact between the grid wheel and the shearing mud-removing component of the present invention; Figure 10 This is an exploded view of the grid wheel and shearing mud-removing component of the present invention; Figure 11 This is a schematic diagram of the collection chamber of the present invention; Figure 12 This is a top view of the arc-shaped scraper and conveying cylinder of the present invention.

[0017] The components include: 1. Drainage trough; 2. Winch; 201. Wire rope; 3. Cleaning mechanism; 301. Arc-shaped scraper; 302. Feeding cylinder; 303. Spiral blade; 304. Collection bin; 305. Handheld frame; 306. Motor; 307. Rod; 308. Fixed cylinder; 309. Fixed disc; 310. First gear; 311. Adjusting component; 4. Arc-shaped scraper head; 5. Slot; 6. Notch; 7. Limiting component; 8. Grid wheel; 9. Shearing and mud-removing component; 10. Threaded hole; 11. Bolt; 12. Fixed rod; 13. Arc-shaped groove; 14. Fixed column; 15. Baffle; 16. Second gear; 17. Support component; 18. Gear ring; 19. Third gear. Detailed Implementation

[0018] like Figures 1-12 As shown, a cleaning device for a building roof drainage channel 1 includes two small winches 2 installed on the drainage channel 1. The wire ropes 201 on the winches 2 are wound around the outside of the drum of the winches 2, and the ends of the wire ropes 201 are fixedly connected to the side wall of the drum. A cleaning mechanism 3 is installed between the wire ropes 201 of the two winches 2. The two winches 2 control the cleaning mechanism 3 to move along the drainage channel 1 through the wire ropes 201.

[0019] The cleaning mechanism 3 includes several arc-shaped scrapers 301, a conveying cylinder 302, a spiral blade 303, and a collection bin 304. The collection bin 304 is installed at one end of the conveying cylinder 302, and one end of the conveying cylinder 302 is rotatably connected to the collection bin 304. The spiral blade 303 is located inside the conveying cylinder 302, which is located in the central area of ​​the cleaning mechanism 3. When the arc-shaped scrapers 301 rotate, they gather impurities towards the central area. When the spiral blade 303 rotates, it discharges the impurities in the central area through the conveying cylinder 302 into the collection bin 304. The cleaning mechanism 3 also includes a handheld frame 305, a motor 306, and a rod 307. The motor 306 is fixedly connected to the handheld frame 305, and the output shaft of the motor 306 is fixedly connected to one end of the rod 307. The shape of the rod 307 is adapted to the spiral blade 303, and the outer surface of the rod 307 is fixedly connected to the inner ring of the spiral blade 303. The motor 306 and the rod 307 drive the spiral blade 303 to rotate synchronously. The handheld frame 305 has two symmetrical slots 5 and two symmetrical notches 6 inside, and two winches. The ends of the wire rope 201 of machine 2 are all fixedly connected to limiters 7. The limiters 7 are placed in the slots 5 through notches 6. The wire rope 201 is tightened by two winches 2. The two limiters 7 pull the hand-held frame 305 in the opposite direction through the slots 5, which greatly reduces the shaking during operation and improves the stability of the hand-held frame 305. The limiters 7 and the hand-held frame 305 can be quickly disassembled and assembled. The inner wall of the conical end of the feed cylinder 302 is fixedly connected to a grid wheel 8. The bottom of the rod 307 is fixedly connected to a shearing lever for contacting the grid wheel 8. The mud-removing component 9 includes a central mounting base and multiple mud-removing teeth. The central mounting base is a disc-shaped structure with a mounting hole in the center for fixed connection with the rod 307. This hole is used to coaxially fix the shearing mud-removing component 9 to the bottom of the rod 307 and rotate synchronously with the rod 307. The multiple mud-removing teeth are evenly distributed along the circumference of the central mounting base. One end of each mud-removing tooth is integrally formed with the outer edge of the central mounting base. The mud-removing teeth are curved in an arc shape, and their curvature is consistent with the rotation direction of the shearing mud-removing component 9. The whole component is arranged in a spiral radial pattern.The cleaning mechanism 3 further includes a fixed cylinder 308, a fixed plate 309, a first gear 310, and an adjusting component 311. The fixed cylinder 308 is rotatably connected to the conveying cylinder 302 and fixedly connected to the first gear 310. The outer side of the conveying cylinder 302 has several circumferentially arranged threaded holes 10. Bolts 11 are threadedly connected to the inside of the fixed cylinder 308, and each bolt 11 is threadedly connected to its adjacent threaded hole 10. A fixing rod 12 is fixedly connected to one end of each arc-shaped scraper 301. The fixing rod 12 passes through the fixing disk 309 and is rotatably connected to the fixing disk 309. One end of the fixing rod 12 is fixedly connected to the adjusting member 311. The outer edge of the adjusting member 311 is integrally formed with several teeth, which mesh with the first gear 310. The interior of the fixing disk 309 is provided with several arc-shaped grooves 13. A fixing post 14 is slidably connected in each arc-shaped groove 13. One end of the fixing post 14 is fixedly connected to the arc-shaped scraper 301 close to it, and the other end is fixedly connected to the adjusting member 311 close to it. 1. Fixed connection: By adjusting the angle of the adjusting component 311, the working position and opening amplitude of multiple sets of arc-shaped scrapers 301 can be adjusted synchronously, adapting to drainage troughs 1 of different widths and specifications, thus enhancing versatility; A baffle 15 is rotatably connected to the outer surface of the rod 307, located above the spiral blade 303. A second gear 16 is fixedly connected to one end of the rod 307, and several support components 17 are fixedly connected to one end of the conveying cylinder 302. A gear ring 18 is fixedly connected to the several support components 17, and a third gear 19 is rotatably mounted on the baffle 15. The third gear 19 meshes with the second gear 16 and the gear ring 18, forming a gear transmission pair through the second gear 16, the third gear 19, and the gear ring 18. The gear transmission pair can be driven to operate simultaneously with the rotation of the rod 307, resulting in a compact transmission layout that enables coordinated action of the arc-shaped scraper 301 and the spiral blade 303; The baffle 15 protects the gear structure, reducing the entry of debris into the transmission gap and lowering the probability of wear and jamming in the gear transmission pair.

[0020] One end of the spiral blade 303 has a conical structure, and one end of the conveying cylinder 302 is conical. The conical part of the spiral blade 303 is located inside the conical end of the conveying cylinder 302. The spiral blade 303 and the conveying cylinder 302 adopt a mutually compatible conical structure, which can guide the debris and allow it to smoothly enter the conveying area of ​​the spiral blade 303. On the other hand, it can improve the smoothness of the debris conveying and improve the conveying effect. There is a gap between the bottom end of the conveying cylinder 302 and the inner bottom wall of the drainage trough 1. The debris gathered by the arc scraper 301 can smoothly enter the feeding area of ​​the conveying cylinder 302 through this gap and will not be blocked by the bottom of the conveying cylinder 302.

[0021] The bottom of the arc-shaped scraper 301 is integrally formed with an arc-shaped scraper head 4 that matches its shape. The arc-shaped scraper head 4 is used to contact the inner bottom wall of the drainage trough 1. The scraper head can closely fit the inner bottom wall of the drainage trough 1, and can scrape off the silt and clumps of debris attached to the bottom of the trough, improve the cleanliness of the bottom surface, and avoid debris residue. One end of the arc-shaped scraper 301 has a sharp structure and is used to contact the inner side wall of the drainage trough 1. The sharp structure of the arc-shaped scraper 301 can scrape off the stubborn debris and silt attached to and embedded in the inner side wall of the drainage trough 1, and has a good cleaning effect on the trough wall of the drainage trough 1. The height of the arc-shaped scraper 301 is not less than the depth of the drainage trough 1, and can completely cover the vertical space of the drainage trough 1. It can simultaneously clean the bottom and the entire height range of the drainage trough 1, avoid missing debris at high places, and comprehensively improve the overall cleaning quality of the drainage trough 1.

[0022] In use, this device has two small winches 2 installed at both ends of the drainage channel 1. The wire rope 201 of the winches 2 is wound and stored outside the drum, and the end of the wire rope 201 is reliably fixed to the side wall of the drum to ensure that the wire rope 201 will not loosen or slip during winding and unwinding, thus ensuring stable traction power output. The wire rope 201 of the two winches 2 are respectively connected to the left and right ends of the cleaning mechanism 3. By synchronously winding and unwinding the ropes of the two winches 2, the entire cleaning mechanism 3 can be controlled to move back and forth at a uniform speed along the length of the drainage channel 1. It should be noted that this device abandons the traditional manual operation mode of manually sweeping section by section with hand tools and bending over. It relies on mechanical traction to realize the automatic movement of the whole machine, which greatly reduces the safety hazards of high-altitude dangerous operations where operators frequently walk on the roof eaves. At the same time, it solves the problems of time-consuming, labor-intensive, and low-efficiency manual cleaning section by section.

[0023] The cleaning mechanism 3 is equipped with a handheld frame 305 on top, and a motor 306 is fixedly installed on the handheld frame 305. The output shaft of the motor 306 is fixedly connected to the rod 307. The outside of the rod 307 is fixedly adapted to the inner ring of the spiral blade 303. After the motor 306 is started, it can drive the rod 307 to rotate, thereby synchronously driving the spiral blade 303 and the shearing mud-removing component 9 at the bottom of the rod 307 to rotate synchronously, providing a stable power source for subsequent debris collection, shearing and crushing, and spiral conveying.

[0024] The handheld frame 305 has symmetrical notches 6 and slots 5 inside. Limiting components 7 are fitted to the ends of the wire rope 201. During assembly, the limiting components 7 are inserted into the slots 5 through the notches 6, allowing for quick connection and assembly of the wire rope 201 and the handheld frame 305. Disassembly is simple; just remove the limiting components 7 from the slots 5. This convenient assembly and disassembly greatly facilitates equipment transport, storage, and maintenance. During operation, the wire ropes 201 at both ends tighten, and the limiting components 7 on both sides exert a counter-tensioning force on the handheld frame 305, effectively counteracting the vibration and torsional forces generated during cleaning and conveying, significantly reducing the overall machine sway. This device achieves adaptive adjustment of the opening amplitude of the arc-shaped scraper 301 through a gear meshing linkage structure. Specifically, the outer side of the material conveying cylinder 302 is locked to the position of the fixed cylinder 308 by bolts 11. The outer side of the fixed cylinder 308 is fixedly connected to the first gear 310. The outer edge teeth of the adjusting component 311 mesh with the first gear 310. The arc-shaped scraper 301 is linked with the arc-shaped groove 13 of the fixed disk 309 and the adjusting component 311 through the fixed rod 12 and the fixed column 14, respectively. When the operator rotates the adjusting component 311, multiple sets of arc-shaped scrapers 301 can be driven to swing synchronously through gear meshing transmission, changing the opening diameter and working coverage of the scraper, so as to adapt to roof drainage channels 1 of different widths. At the same time, after the adjustment is completed, the relative position of the fixed cylinder 308 and the material conveying cylinder 302 is locked by bolts 11, which can lock the working angle of the scraper and prevent the scraper from deviating or shaking during the operation, ensuring uniform and stable cleaning operation.

[0025] Next, multiple arc-shaped scrapers 301 serve as the core cleaning components, and the overall height of the arc-shaped scrapers 301 is not less than the depth of the drainage trough 1, which can completely cover the vertical space of the drainage trough 1. Among them, the arc-shaped scraper head 4 is integrally formed at the bottom of the arc-shaped scraper 301, which can completely fit the inner bottom wall of the drainage trough 1 to scrape off the silt, clumps, and sediment attached to the bottom of the trough, and avoid the residue of debris at the bottom of the trough. The scraper end is provided with a sharp structure, which can cut into the gaps of the inner side wall of the drainage trough 1 to scrape off the stubborn flocculent matter, silt and debris stuck and adhered to the trough wall.

[0026] Multiple sets of arc-shaped scrapers 301 rotate synchronously with the transmission structure, continuously gathering scattered debris and clumps of silt from the bottom and sides of the drainage trough 1 towards the central conveying cylinder 302 of the device. This provides a basis for subsequent centralized conveying and collection, completely solving the problems of scattered cleaning, debris leakage, and the need for repeated cleaning associated with traditional tools. All debris gathered by the arc-shaped scrapers 301 can enter the feeding area inside the conveying cylinder 302 through the bottom gap. At the same time, a conical constriction structure is provided at the lower end of the conveying cylinder 302. The lower end of the spiral blade 303 is fitted with a conical structure and nested inside the conical end of the conveying cylinder 302. The conical structure forms a top-to-bottom guide constriction, which can gather and guide incoming debris, preventing large pieces of debris from getting stuck in the feed inlet, greatly improving the smoothness of debris conveying and preventing material blockage. A grid wheel 8 is fixedly installed on the inner wall of the conical end of the conveying cylinder 302, and a shearing and mud-removing component 9 is coaxially fixed at the bottom of the rod 307. The shearing and mud-removing component 9 rotates synchronously with the rod 307. The mud-removing component 9 consists of a disc-shaped central mounting base and multiple spirally radial arc-shaped mud-removing teeth. The bending direction of the mud-removing teeth is consistent with the rotation direction of the equipment. During operation, the mud-removing teeth and the grid gap of the grid wheel 8 form an interlaced shearing pair. When clumps of silt, tangled dead branches, and flocculent debris enter the area of ​​the grid wheel 8 along with the feed airflow, the grid wheel 8 limits and diverts the debris. The high-speed rotation of the shearing mud-removing teeth interlocks with the grid wheel 8, forcibly shearing and crushing large, tangled, and clumps of debris. Large debris is shredded into small particles, solving the problem of large debris clogging the conveying cylinder 302. At the same time, the mud-removing teeth of the arc-shaped spiral structure can generate an outward material-removing force during rotation, pushing the debris accumulated in the grid area to the outside, preventing debris from accumulating and covering the grid, and continuously ensuring the grid channel is unobstructed. The debris pushed outward is conducive to entering the conveying range of the spiral blade 303. When the rod 307 drives the spiral blade 303 to rotate, the foreign objects are conveyed to the collection bin 304.

[0027] Next, the baffle 15 is rotatably mounted on the outer side of the rod 307, the second gear 16 is fixed at the lower end of the rod 307, the conveying cylinder 302 is fixed with the gear ring 18 through the support member 17, and the third gear 19 is rotatably mounted on the baffle 15. The three together form a gear transmission pair. When the rod 307 rotates, it can drive the gear transmission pair to operate in conjunction, realizing the coordinated and synchronous operation of multiple actions such as scraper gathering, blade conveying, and shearing and crushing. At the same time, the baffle 15 covers the gear transmission structure, which can effectively prevent mud, fallen leaves, and small debris from entering the gear meshing gap, avoid debris from jamming the gears, aggravating the wear of transmission components, and significantly reduce the equipment failure rate.

[0028] After being sheared and crushed, the small debris enters the conveying cylinder 302 under the guidance of the conical structure of the spiral blade 303. The rotating spiral blade 303 generates a continuous upward spiral conveying force, which continuously conveys the crushed debris and mud in the central area of ​​the conveying cylinder 302 upward. The upper end of the conveying cylinder 302 is rotatably connected to the collection bin 304 without affecting the rotation of the spiral blade 303. The debris conveyed to the top can be automatically discharged into the collection bin 304 for unified collection and storage, realizing the integrated operation of debris cleaning, crushing, conveying and collecting, which greatly improves the cleaning efficiency of the long-distance drainage ditch 1.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for roof drainage channels of buildings, characterized in that: Includes two winches (2) installed on the drainage ditch (1), a cleaning mechanism (3) is installed between the wire ropes (201) of the two winches (2), and the two winches (2) control the cleaning mechanism (3) to move along the drainage ditch (1) via the wire ropes (201); The cleaning mechanism (3) includes several arc-shaped scrapers (301), a conveying cylinder (302), a spiral blade (303), and a collection bin (304). The collection bin (304) is installed at one end of the conveying cylinder (302), and the spiral blade (303) is located inside the conveying cylinder (302). The conveying cylinder (302) is located in the central area of ​​the cleaning mechanism (3). When the several arc-shaped scrapers (301) rotate, they gather impurities towards the central area. When the spiral blade (303) rotates, it discharges the impurities in the central area through the conveying cylinder (302) into the collection bin (304).

2. A building roof gutter (1) cleaning device according to claim 1, characterised in that: One end of the spiral blade (303) has a conical structure, and one end of the conveying cylinder (302) is conical. The conical part of the spiral blade (303) is located inside the conical end of the conveying cylinder (302), and there is a gap between the bottom end of the conveying cylinder (302) and the inner bottom wall of the drainage trough (1).

3. A building roof gutter (1) cleaning device according to claim 1, characterised in that: The bottom of the arc-shaped scraper (301) is integrally formed with an arc-shaped scraper head (4) that matches its shape. The arc-shaped scraper head (4) is used to contact the inner bottom wall of the drainage trough (1).

4. A building roof gutter (1) cleaning device according to claim 1, characterised in that: One end of the arc-shaped scraper (301) has a sharp structure and is used to contact the inner wall of the drainage trough (1).

5. A building roof gutter (1) cleaning device according to claim 1, characterized in that: The cleaning mechanism (3) also includes a handheld frame (305), a motor (306) and a rod (307). The motor (306) is fixedly connected to the handheld frame (305), the output shaft of the motor (306) is fixedly connected to one end of the rod (307), the shape of the rod (307) is adapted to the spiral blade (303), and the outer surface of the rod (307) is fixedly connected to the inner ring of the spiral blade (303).

6. A building roof gutter (1) cleaning device according to claim 5, characterised in that: The handheld frame (305) has two symmetrical slots (5) and two symmetrical notches (6) inside. The ends of the wire ropes (201) of the two winches (2) are fixedly connected to limiters (7), and the limiters (7) are placed in the slots (5) through the notches (6).

7. A building roof gutter (1) cleaning device according to claim 5, characterised in that: The inner wall of the feed cylinder (302) is fixedly connected to a grid wheel (8), and the bottom of the rod (307) is fixedly connected to a shearing mud-removing component (9) for contacting the grid wheel (8).

8. A building roof gutter (1) cleaning device according to claim 1, characterized in that: The cleaning mechanism (3) also includes a fixed cylinder (308), a fixed plate (309), a first gear (310), and an adjusting component (311). The fixed cylinder (308) is rotatably connected to the conveying cylinder (302) and fixedly connected to the first gear (310). The outer side of the conveying cylinder (302) is provided with several circumferentially arranged threaded holes (10). The fixed cylinder (308) is internally threaded with bolts (11). Each bolt (11) is threadedly connected to its adjacent threaded hole (10). One end of each arc-shaped scraper (301) is fixedly connected with a fixing rod (12). The fixing rod (12) passes through the fixing plate (309) and is rotatably connected to the fixing plate (309). One end of the fixing rod (12) is fixedly connected to the adjusting member (311). The outer edge of the adjusting member (311) is integrally formed with several teeth and meshes with the first gear (310). The interior of the fixing plate (309) is provided with several arc-shaped grooves (13). Each arc-shaped groove (13) is slidably connected with a fixing column (14). One end of the fixing column (14) is fixedly connected to the arc-shaped scraper (301) close to it, and the other end is fixedly connected to the adjusting member (311) close to it.

9. A building roof gutter (1) cleaning device according to claim 5, characterised in that: A baffle (15) is rotatably connected to the outer surface of the rod (307). A second gear (16) is fixedly connected to one end of the rod (307). Several support members (17) are fixedly connected to one end of the conveying cylinder (302). A toothed ring (18) is fixedly connected to the several support members (17). A third gear (19) is rotatably installed on the baffle (15). The third gear (19) is meshed with the second gear (16) and the toothed ring (18).

10. A building roof gutter (1) cleaning device according to claim 1 characterised in that: The height of the arc-shaped scraper (301) is not less than the depth of the drainage trough (1).

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