Protective fender hanging bracket with load lifting mechanism

Abstract

The invention discloses a protection type fender hanging bracket with a load lifting mechanism, and belongs to the technical field of fender hanging brackets, the protection type fender hanging bracket comprises a mounting frame fixedly mounted on a wharf through bolts, a guide rail is fixedly and integrally arranged on the outer side of the mounting frame, a through groove is formed in the mounting frame, and meanwhile an adjusting seat is arranged on the outer side of the mounting frame in a lifting mode; a load lifting mechanism is arranged on the adjusting seat, a limiting cylinder is fixedly installed on the rear side of the adjusting seat, and a negative pressure adsorption assembly used for fixing the adjusting seat is arranged on the inner side of the limiting cylinder; a cleaning assembly used for cleaning the floating air bag is arranged on the outer side of the lower portion of the adjusting base. The protection type fender hanging bracket with the load lifting mechanism can automatically lift and adjust the position height of the fender hanging bracket under the action of buoyancy in a load mode, can prevent waves from influencing the adjusting position precision, achieves precise buffering, can achieve multiple buffering at the same time, and effectively improves the buffering protection effect on a ship.

Description

Technical Field

[0001] The present invention relates to the technical field of fender hangers, and particularly to a protective fender hanger provided with a load lifting mechanism. Background Art

[0002] In areas with frequent water transportation operations such as ports and docks, the docking safety of ships is of crucial importance. As a buffer device, fenders are used to reduce the impact force when the ship berths against the dock, protecting the ship's hull and dock facilities. However, most of the existing fender hangers have fixed installation positions and are inconvenient for height adjustment, thus unable to be applicable to the ship docking buffer under different water levels.

[0003] The prior art (Chinese patent with application number: 202411495506.4, application date: October 25, 2024) discloses a fender hanger with multiple buffers, including a main support platform, an anti-corrosion cover, a roller groove, a roller member, a self-adjusting fender mechanism, a primary buffer mechanism, and a secondary buffer mechanism. The two sides of the main support platform are both slidably connected with sub-support platforms, and a self-adjusting fender mechanism is arranged on the main support platform. A fender board is connected to the self-adjusting fender mechanism, and a primary buffer mechanism is arranged on the rear side of the fender board. A secondary buffer mechanism is arranged inside the sub-support platform. This invention can not only adaptively adjust the height according to the change of water level, so that when the ship berths at the shore, the ship's side can stably contact the fender hanger, thereby buffering the inertia of the hull to facilitate the stable protection of the ship. Additionally, it can make the fender hanger have better buffer performance through the impact of water waves and the ship on the fender hanger, thus improving its buffer effect. Although it can achieve adaptive height adjustment through the change of water level, it is prone to fluctuate up and down under the action of waves generated during the ship docking process, thus unable to ensure its effective buffering of the ship, and there are certain usage defects. Summary of the Invention

[0004] The purpose of the present invention is to provide a protective fender hanger provided with a load lifting mechanism to solve the problem in the above background art that the existing fender hanger is prone to fluctuate up and down under the action of waves generated during the ship docking process, thus affecting the buffer effect on the ship.

[0005] To achieve the above object, the present invention provides the following technical solution: A protective fender hanger equipped with a load lifting mechanism, including a mounting frame fixedly installed on the dock by bolts, and a guide rail is integrally fixed on the outer side of the mounting frame. A through groove is provided on the mounting frame. At the same time, an adjusting seat is arranged to be lifted and lowered on the outer side of the mounting frame. A load lifting mechanism is arranged on the adjusting seat. The load lifting mechanism includes a floating airbag fixedly installed on the outer side of the adjusting seat. A guide post is elastically and telescopically installed through the lower part of the adjusting seat. At the same time, a wave blocking plate is fixedly installed at the front end of the guide post. A limiting cylinder is fixedly installed at the rear side of the adjusting seat, and a negative pressure adsorption component for fixing the adjusting seat is arranged inside the limiting cylinder; A first rotating ring is rotatably installed on the outer side of the upper part of the adjusting seat. The front side of the first rotating ring is connected to a buffer seat through a rubber cylinder. A telescopic and adjustable fixed cylinder and a guide post are connected between the adjusting seat and the buffer seat. A transmission component is also connected between the first rotating ring and the buffer seat. A second spring is fixedly connected between the adjusting seat and the buffer seat; A cleaning component for cleaning the floating airbag is arranged on the outer side of the lower part of the adjusting seat.

[0006] Preferably, sliders are symmetrically and fixedly installed on the back surface of the adjusting seat. The sliders are arranged in a T-shaped structure and are slidably connected to the guide rail. At the same time, the adjusting seat is lifted and lowered under the buoyancy of the floating airbag.

[0007] Preferably, a first spring is fixedly connected between the adjusting seat and the wave blocking plate. The guide post is elastically and telescopically connected to the adjusting seat under the elastic force of the first spring. The wave blocking plate drives the guide post to perform telescopic adjustment under the impact of sea waves.

[0008] Preferably, the negative pressure adsorption component includes a negative pressure disc fixedly installed inside the limiting cylinder. A movable plate is slidably sleeved on the outer side of the negative pressure disc. The lower end of the movable plate is fixedly installed at the end of the guide post. At the same time, a sealing plug block is hermetically and slidably arranged inside the negative pressure disc. Pulling ropes are evenly connected between the sealing plug block and the movable plate. When the movable plate moves, the sealing plug block is pulled to slide inside the negative pressure disc through the pulling ropes. The negative pressure disc is hermetically attached to the outer wall of the dock.

[0009] Preferably, rubber balls are evenly embedded on the surface of the buffer seat, and the rubber balls rotate during the impact of the hull.

[0010] Preferably, the fixed cylinder and the guide post are telescopically connected. The buffer seat and the adjusting seat form an elastic telescopic structure through the rubber cylinder and the second spring. The rubber cylinder and the buffer seat are coaxially arranged.

[0011] Preferably, the rubber cylinder and the floating airbag are connected through a pipeline. When the rubber cylinder is compressed and deformed, air is conveyed to the floating airbag through the pipeline. A sealed structure is formed among the adjusting seat, the first rotating ring, the rubber cylinder and the buffer seat.

[0012] Preferably, the transmission assembly includes a first transmission cylinder fixedly mounted on the first rotating ring, and a second transmission cylinder is fixedly arranged on the outer side of the buffer seat, and the first transmission cylinder and the second transmission cylinder are socketed with each other, and at the same time, a spiral first guide groove and a linear second guide groove are opened on the inner side of the first transmission cylinder, and the first guide groove and the second guide groove are connected, and a ball is embedded in the outer wall of the second transmission cylinder, and the ball rolls along the first guide groove and the second guide groove, and the ball drives both the first rotating ring and the first transmission cylinder to rotate during the sliding process along the first guide groove.

[0013] Preferably, the cleaning assembly includes a second rotating ring rotatably connected to the outer side of the lower part of the adjustment seat, and cleaning brushes are evenly arranged on the ends of the second rotating ring, and the cleaning brushes are attached to the outer side of the floating airbag. At the same time, the first rotating ring and the second rotating ring are connected by a transmission belt.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the protective fender hanger provided with a load-lifting mechanism can automatically load-lift and adjust the height of the fender hanger under the action of buoyancy, and can avoid the influence of waves on the adjustment position accuracy, realize accurate buffering, and can realize multiple buffering at the same time, effectively improving the buffering and protection effect of the ship, the specific contents are as follows;

[0015] 1. An adjustment seat and a floating airbag are provided. The floating airbag floats in the seawater. When the water level rises, the floating airbag will drive the adjustment seat to move up and down along the guide rail under the action of buoyancy, thereby realizing the adjustment of the height of the buffer seat, ensuring that the buffer seat can effectively buffer the docked ship under different water levels;

[0016] 2. A wave-breaking plate and a negative pressure plate are provided. When a large wave is generated during the berthing process of a ship, the wave-breaking plate will drive the guide column to perform elastic expansion and contraction adjustment under the impact of the wave. At this time, the guide column will drive the movable plate connected to its end to slide on the outside of the negative pressure plate. At this time, the negative pressure plate will pull the pull rope during the movement, so that the pull rope pulls the sealing plug to slide on the inside of the negative pressure plate, so that the negative pressure plate is adsorbed on the outside of the dock, thereby fixing the adjustment seat, thereby ensuring that the buffer seat can accurately buffer the ship;

[0017] 3. A rubber cylinder, a buffer seat, a first transmission cylinder and a second transmission cylinder are provided. When a ship hits the buffer seat, the buffer seat will drive the fixed cylinder and the guide column to perform telescopic adjustment and compress the second spring to achieve buffering of the ship. When passing through, the first transmission cylinder and the second transmission cylinder will perform synchronous telescopic adjustment, and at the same time, the ball will slide along the first guide groove and the second guide groove, thereby driving the first transmission cylinder to rotate elastically, so that the first transmission cylinder twists and squeezes the rubber cylinder to achieve efficient buffering. At the same time, the gas inside the rubber cylinder will be transported to the floating airbag through a pipeline, and the buffering effect will be further improved by gas compression;

[0018] 4. A first rotating ring, a second rotating ring and a cleaning brush are provided. As the floating airbag expands and recovers, the floating airbag will deform, causing the attachments on the outer side of the floating airbag to fall off. At the same time, during the rotation of the first rotating ring, the second rotating ring will be driven to rotate through a transmission belt, so that the cleaning brush on the outer side of the second rotating ring can further clean the outer wall of the floating airbag, avoiding excessive attachments on the outer side of the floating airbag and reducing buoyancy, and preventing it from affecting the precise adjustment of the position of the fender hanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the installation structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the rear view structure of the mounting bracket of the present invention;

[0021] Figure 3 It is a schematic diagram of the sectional structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the installation structure of the guide rail of the present invention;

[0023] Figure 5 It is a schematic diagram of the connection structure between the adjusting seat and the floating airbag of the present invention;

[0024] Figure 6 It is a schematic diagram of the installation structure of the negative pressure disc of the present invention;

[0025] Figure 7 It is a schematic diagram of the sectional view of the negative pressure disc of the present invention;

[0026] Figure 8 It is a schematic diagram of the sectional view of the rubber cylinder of the present invention;

[0027] Figure 9 It is a three-dimensional structure schematic diagram of the first transmission cylinder of the present invention.

[0028] In the figure: 1. Mounting bracket; 2. Guide rail; 3. Through groove; 4. Adjusting seat; 5. Slide block; 6. Floating airbag; 7. Guide post; 8. Wave blocking plate; 9. First spring; 10. Limiting cylinder; 11. Negative pressure disc; 12. Movable plate; 13. Pulling rope; 14. Sealing plug block; 15. First rotating ring; 16. Rubber cylinder; 17. Buffer seat; 1701. Rubber ball; 18. Fixed cylinder; 19. Guide post; 20. Second spring; 21. First transmission cylinder; 2101. First guide groove; 2102. Second guide groove; 22. Second transmission cylinder; 2201. Ball; 23. Second rotating ring; 24. Cleaning brush; 25. Transmission belt. DETAILED DESCRIPTION OF THE INVENTION

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1: Please refer to Figures 1-7 As shown, during the buoyancy adjustment of the existing fender hanger, it is easily affected by the impact of waves, resulting in an unstable buffering position for the ship and unable to ensure a stable buffering effect. To solve this technical problem, the following technical content is disclosed in this embodiment; a protective fender hanger provided with a load lifting mechanism, including a mounting frame 1 fixedly installed on the dock by bolts, and a guide rail 2 is integrally fixed on the outside of the mounting frame 1, and a through groove 3 is opened on the mounting frame 1. At the same time, an adjusting seat 4 is arranged to be lifted and lowered on the outside of the mounting frame 1. A load lifting mechanism is arranged on the adjusting seat 4, and the load lifting mechanism includes a floating airbag 6 fixedly installed on the outside of the adjusting seat 4. The lower part of the adjusting seat 4 is elastically and telescopically installed with a guide post 7. At the same time, a wave blocking plate 8 is fixedly installed at the front end of the guide post 7. A limiting cylinder 10 is fixedly installed at the rear side of the adjusting seat 4, and a negative pressure adsorption component for fixing the adjusting seat 4 is arranged inside the limiting cylinder 10; symmetrically fixed sliders 5 are installed on the back of the adjusting seat 4, and the sliders 5 are arranged in a T-shaped structure. The sliders 5 are slidably connected to the guide rail 2. At the same time, the adjusting seat 4 is lifted and lowered under the buoyancy of the floating airbag 6.

[0031] A first spring 9 is fixedly connected between the adjusting seat 4 and the wave blocking plate 8. The guide post 7 is elastically and telescopically connected to the adjusting seat 4 under the elastic force of the first spring 9, and the wave blocking plate 8 drives the guide post 7 to perform telescopic adjustment under the impact of sea waves.

[0032] The negative pressure adsorption component includes a negative pressure plate 11 fixedly installed inside the limiting cylinder 10. A movable plate 12 is slidably sleeved on the outside of the negative pressure plate 11. The lower end of the movable plate 12 is fixedly installed at the end of the guide post 7. At the same time, a sealing plug block 14 is slidably arranged in a sealed manner inside the negative pressure plate 11. At the same time, a plurality of stay ropes 13 are evenly connected between the sealing plug block 14 and the movable plate 12. Moreover, when the movable plate 12 moves, the sealing plug block 14 is pulled by the stay ropes 13 to slide inside the negative pressure plate 11, and the negative pressure plate 11 is hermetically attached to the outer wall of the dock.

[0033] Through the above technical solution, the mounting bracket 1 is fixedly installed on the outside of the dock, so that the floating airbag 6 floats in the water. When the water level changes, the floating airbag 6 will drive the adjusting seat 4 to lift and adjust on the mounting bracket 1 under the action of buoyancy, and the slider 5 slides along the guide rail 2 to ensure the adjustment stability of the adjusting seat 4. When waves are generated when the ship approaches the shore, the wave blocking plate 8 will be impacted by the waves, causing the wave blocking plate 8 to drive the guide post 7 to elastically expand and contract. At this time, the guide post 7 will drive the movable plate 12 to slide outside the negative pressure plate 11. At this time, the movable plate 12 will pull the pull rope 13, causing the pull rope 13 to pull the sealing plug 14 to slide inside the negative pressure plate 11, so that the negative pressure plate 11 is adsorbed on the dock wall under the negative pressure, realizing the fixation of the adjusting seat 4, avoiding the influence of the adjusting seat 4 on the positioning height under the action of waves, and ensuring stable buffering of the ship.

[0034] Embodiment 2: The technical content disclosed in this embodiment is a further improvement based on the above Embodiment 1. The existing fender hanger is inconvenient for multi-level buffering of ships and cannot utilize the impact of the ship to realize automatic cleaning of floating parts. To further solve this technical problem, the following technical content is disclosed in this embodiment, as Figures 8-9 shown; A first rotating ring 15 is rotatably installed on the outer side of the upper part of the adjusting seat 4, and a buffer seat 17 is connected to the front side of the first rotating ring 15 through a rubber cylinder 16. A fixed cylinder 18 and a guide post 19 with telescopic adjustment are connected between the adjusting seat 4 and the buffer seat 17. A transmission component is also connected between the first rotating ring 15 and the buffer seat 17, and a second spring 20 is fixedly connected between the adjusting seat 4 and the buffer seat 17; A cleaning component for cleaning the floating airbag 6 is arranged on the outer side of the lower part of the adjusting seat 4; Rubber balls 1701 are evenly embedded on the surface of the buffer seat 17, and the rubber balls 1701 rotate during the impact of the hull.

[0035] The fixed cylinder 18 and the guide post 19 are telescopically connected, and the buffer seat 17 and the adjusting seat 4 form an elastic telescopic structure through the rubber cylinder 16 and the second spring 20, and the rubber cylinder 16 and the buffer seat 17 are coaxially arranged; The rubber cylinder 16 and the floating airbag 6 are connected through a pipeline, and during the pressure deformation process of the rubber cylinder 16, air is supplied to the floating airbag 6 through the pipeline, and a sealed structure is formed among the adjusting seat 4, the first rotating ring 15, the rubber cylinder 16 and the buffer seat 17.

[0036] The transmission assembly includes a first transmission cylinder 21 fixedly installed on the first rotating ring 15. A second transmission cylinder 22 is fixedly arranged on the outer side of the buffer seat 17. The first transmission cylinder 21 and the second transmission cylinder 22 are sleeved with each other. A spiral first guide groove 2101 and a linear second guide groove 2102 are formed on the inner side of the first transmission cylinder 21. The first guide groove 2101 and the second guide groove 2102 are connected. A ball 2201 is embedded on the outer wall of the second transmission cylinder 22. The ball 2201 rolls along the first guide groove 2101 and the second guide groove 2102. When the ball 2201 slides along the first guide groove 2101, it drives the first rotating ring 15 and the first transmission cylinder 21 to rotate.

[0037] The cleaning assembly includes a second rotating ring 23 rotatably connected to the outer side of the lower part of the adjusting seat 4. Cleaning brushes 24 are evenly arranged at the end of the second rotating ring 23. The cleaning brushes 24 are attached to the outer side of the floating airbag 6. The first rotating ring 15 and the second rotating ring 23 are connected by a transmission belt 25.

[0038] Through the above technical solution, when the ship docks, the buffer seat 17 will contact the ship, so that the rubber balls 1701 on the buffer seat 17 can roll to reduce the frictional force on the buffer seat 17. At the same time, the buffer seat 17 will drive the fixed cylinder 18 and the guide post 19 to perform telescopic adjustment to compress the second spring 20, realizing effective buffering of the ship. At the same time, the first transmission cylinder 21 and the second transmission cylinder 22 will perform telescopic adjustment, prompting the ball 2201 to slide along the first guide groove 2101 and the second guide groove 2102, thereby driving the first transmission cylinder 21 and the first rotating ring 15 to rotate. At this time, the first rotating ring 15 will twist the rubber cylinder 16, so that the rubber cylinder 16 realizes efficient buffering through twisting and folding. At the same time, during the deformation of the rubber cylinder 16, part of the gas inside it will be transported to the floating airbag 6 through a pipeline, causing the floating airbag 6 to expand.

[0039] At the same time, as the first rotating ring 15 rotates, it can drive the second rotating ring 23 to rotate synchronously through the transmission belt 25, so that the second rotating ring 23 can drive the cleaning brushes 24 to slide on the outer side of the floating airbag 6, enabling the floating airbag 6 to be automatically cleaned through its own deformation and the cleaning of the cleaning brushes 24, avoiding the increase in weight caused by impurities and underwater organisms adhering to the outer side of the floating airbag 6, ensuring that the floating airbag 6 can always provide sufficient buoyancy, and enabling the buffer seat 17 to accurately buffer and support the ship.

[0040] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A protective fender hanger with a load-lifting mechanism, comprising a mounting frame (1) fixedly mounted on a dock by bolts, wherein a guide rail (2) is fixedly integrated on the outer side of the mounting frame (1), and a through slot (3) is provided on the mounting frame (1), and an adjustment seat (4) is provided on the outer side of the mounting frame (1) for lifting, characterized in that: The adjusting seat (4) is provided with a load-lifting mechanism, and the load-lifting mechanism comprises a floating airbag (6) fixedly mounted on the outside of the adjusting seat (4), and a guide column (7) is elastically and telescopically mounted through the lower part of the adjusting seat (4), and a wave-blocking plate (8) is fixedly mounted on the front end of the guide column (7), and a limiting cylinder (10) is fixedly mounted on the rear side of the adjusting seat (4), and a negative pressure adsorption component for fixing the adjusting seat (4) is arranged on the inner side of the limiting cylinder (10); A first rotating ring (15) is rotatably mounted on the outer side of the upper portion of the adjusting seat (4), and the front side of the first rotating ring (15) is connected to a buffer seat (17) via a rubber tube (16), and a telescopically adjustable fixed tube (18) and a guide column (19) are connected between the adjusting seat (4) and the buffer seat (17), a transmission assembly is also connected between the first rotating ring (15) and the buffer seat (17), and a second spring (20) is fixedly connected between the adjusting seat (4) and the buffer seat (17), and the transmission assembly comprises A first transmission cylinder (21) is fixedly mounted on the first rotating ring (15), and a second transmission cylinder (22) is fixedly arranged on the outer side of the buffer seat (17), and a first guide groove (2101) and a second guide groove (2102) are opened on the inner side of the first transmission cylinder (21), and a ball (2201) is embedded and mounted on the outer wall of the second transmission cylinder (22), and the ball (2201) drives the first rotating ring (15) and the first transmission cylinder (21) to rotate when sliding along the first guide groove (2101); A cleaning component for cleaning the floating airbag (6) is arranged on the outer side of the lower part of the adjustment seat (4).

2. The protective fender hanger with a load-lifting mechanism according to claim 1, characterized in that: A slider (5) is symmetrically fixedly mounted on the back of the adjustment seat (4), and the slider (5) is arranged in a T-shaped structure. The slider (5) is slidably connected to the guide rail (2), and the adjustment seat (4) is raised and lowered under the buoyancy of the floating airbag (6).

3. The protective fender hanger with a load-lifting mechanism according to claim 1, characterized in that: A first spring (9) is fixedly connected between the adjustment seat (4) and the wave-breaking plate (8), and the guide column (7) is elastically telescopically connected to the adjustment seat (4) under the elastic force of the first spring (9), and the wave-breaking plate (8) drives the guide column (7) to perform telescopic adjustment under the impact of sea waves.

4. The protective fender hanger with a load-lifting mechanism according to claim 1, characterized in that: The negative pressure adsorption component comprises a negative pressure plate (11) fixedly mounted on the inner side of the limiting cylinder (10), and a movable plate (12) is provided on the outer sliding sleeve of the negative pressure plate (11), and the lower end of the movable plate (12) is fixedly mounted on the end of the guide column (7), and a sealing plug (14) is provided on the inner side of the negative pressure plate (11) for sealing and sliding, and a pull rope (13) is evenly connected between the sealing plug (14) and the movable plate (12), and during the movement of the movable plate (12), the sealing plug (14) is pulled by the pull rope (13) to slide on the inner side of the negative pressure plate (11), and the negative pressure plate (11) is sealed and fitted to the outer wall of the dock.

5. The protective fender hanger with a load-lifting mechanism according to claim 1, characterized in that: The surface of the buffer seat (17) is evenly embedded with rubber balls (1701), and the rubber balls (1701) rotate during the collision with the ship body.

6. The protective fender hanger with a load-lifting mechanism according to claim 1, characterized in that: The fixing cylinder (18) and the guide column (19) are telescopically connected, and the buffer seat (17) forms an elastic telescopic structure with the adjustment seat (4) through the rubber cylinder (16) and the second spring (20), and the rubber cylinder (16) and the buffer seat (17) are coaxially arranged.

7. The protective fender hanger with a load-lifting mechanism according to claim 1, characterized in that: The rubber tube (16) and the floating airbag (6) are connected via a pipeline, and during the process of the rubber tube (16) being compressed and deformed, air is supplied to the floating airbag (6) via the pipeline, and a sealing structure is formed between the adjustment seat (4), the first rotating ring (15), the rubber tube (16) and the buffer seat (17).

8. The protective fender hanger with a load-lifting mechanism according to claim 1, characterized in that: The first transmission cylinder (21) and the second transmission cylinder (22) are sleeved together, and a spiral first guide groove (2101) and a linear second guide groove (2102) are provided on the inner side of the first transmission cylinder (21), and the first guide groove (2101) and the second guide groove (2102) are connected, and the ball (2201) rolls along the first guide groove (2101) and the second guide groove (2102).

9. The protective fender hanger with a load-lifting mechanism according to claim 1, characterized in that: The cleaning assembly comprises a second rotating ring (23) rotatably connected to the outer side of the lower part of the adjustment seat (4), and cleaning brushes (24) are evenly arranged at the end of the second rotating ring (23), and the cleaning brushes (24) are attached to the outer side of the floating airbag (6), and the first rotating ring (15) and the second rotating ring (23) are transmission-connected via a transmission belt (25).

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