Combined airbag maintenance platform for water diversion channel maintenance operation and operation method

Abstract

The application discloses a combined air bag maintenance platform for water diversion channel maintenance operation, which comprises an air bag system and a traction system; the air bag system comprises a bottom annular air bag, a height adjusting air bag and an angle adjusting air bag; the bottom annular air bag is supported on the inner wall of the water diversion channel after being inflated, and provides basic support for the whole platform; the height adjusting air bag and the angle adjusting air bag are arranged above the bottom annular air bag, and through inflation adjustment, the height adjusting air bag and the angle adjusting air bag jointly form a horizontal working platform which is adapted to the slope change of the channel; the traction system is arranged in the water diversion channel and is used for moving and positioning the air bag system. Through the modular adjustment of the air bag, the application can be self-adapted to different channel forms such as horizontal sections, inclined straight sections and turning sections; the application adopts a lightweight design and meets the requirement of entering the narrow entrance; multiple safety protection measures are adopted to ensure the operation safety, and the maintenance cycle is significantly shortened.

Description

Technical Field

[0001] This invention relates to the field of hydropower station maintenance technology, specifically a combined airbag maintenance platform and operating method for water diversion channel maintenance operations. Background Technology

[0002] The water diversion channel of a hydroelectric power station is a crucial passage for water flow to drive the generator units; its structural integrity directly affects the safe operation and power generation efficiency of the station. (See attached instruction manual.) Figure 1 As shown, the water intake channels of large hydropower stations are typically characterized by large diameters, steep slopes, long lengths, and the presence of bends. The inner walls of these channels are constantly subjected to the scouring action of high-speed water flow, making them prone to physical wear, cavitation, and structural cracks, necessitating regular inspection and maintenance.

[0003] However, traditional water diversion channel maintenance operations face the following technical challenges: The inlet of the water diversion channel is usually quite narrow (such as a maintenance door with a diameter of only about 800mm), and there is no pre-installed hoisting equipment inside. Large, integrated maintenance machinery cannot directly enter the channel, which limits the size and weight of the maintenance equipment.

[0004] The inner walls of the flow channel are steep and slippery, and may contain stains, debris, or structural damage, making it extremely difficult and posing a high safety risk for maintenance personnel to climb directly. Traditional scaffolding erection methods are not only time-consuming, but also difficult to stabilize within the inclined and curved flow channel.

[0005] Existing maintenance platforms or supports are insufficient to provide stable support and maintain a horizontal position in inclined and curved sections of the flow channel, failing to provide a safe and reliable working interface for high-altitude maintenance operations. Particularly in areas with slope changes and curves, the lack of attitude adjustment capability of the work platform severely restricts the scope and quality of maintenance.

[0006] Using traditional methods for equipment assembly, disassembly, and personnel and material transportation often requires several days or even longer of preparation time, which seriously affects the maintenance window and overall operational efficiency of hydropower stations. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a combined airbag maintenance platform and operating method for water diversion channel maintenance operations. It aims to solve the technical problem that existing water diversion channel maintenance equipment cannot stably establish a horizontal working interface in inclined and turning sections of the channel due to limited space access and poor adaptability to complex environments. Through the flexible support and multi-dimensional attitude adjustment of the modular combined airbags, the technical effects of lightweight and rapid deployment of the maintenance platform, adaptive leveling of the entire channel, and safe and efficient mobile operation are achieved.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a combined airbag maintenance platform for water diversion channel maintenance operations, including an airbag system and a traction system; The airbag system includes a bottom annular airbag, a height adjustment airbag, and an angle adjustment airbag; The bottom annular airbag, after being inflated, supports the inner wall of the water diversion channel, providing basic support for the entire maintenance platform. The height adjustment airbag and the angle adjustment airbag are set on the bottom annular airbag, and together they form a horizontal working platform that adapts to changes in the slope of the flow channel by inflation adjustment. At least one of the traction systems is disposed in the upper section of the water diversion channel for moving and positioning the airbag system within the channel.

[0009] In a preferred embodiment, the airbag system further includes a forward tilt airbag, which is connected to the side of the height adjustment airbag opposite to the bottom annular airbag, and is used to adjust the forward tilt angle of the work platform when operating on a turning section.

[0010] In a preferred embodiment, the angle adjustment airbag and the forward tilt airbag adopt a multi-layer segmented structure, with each layer corresponding to a preset tilt angle; The height-adjustable airbag adopts a segmented structure, with each segment corresponding to a preset height.

[0011] In a preferred embodiment, a detachable standing platform is also included, which is laid on top of the airbag system to provide a stable standing working surface for maintenance personnel.

[0012] In a preferred embodiment, the height adjustment airbag is provided with a step, and the path of the step is set from the bottom to the top of the height adjustment airbag after inflation.

[0013] In a preferred embodiment, a safety protection device is also included, comprising an inflatable guardrail installed at the edge of the work platform and a central safety net installed within the hollow area of ​​the bottom annular airbag.

[0014] In a preferred embodiment, a gas leakage protection system is also included, wherein the gas leakage protection system includes at least one of the following: A wear-resistant layer is provided on the outer surface of the bottom annular airbag; Obstacle avoidance grooves are provided on the bottom annular airbag; A multi-layer sealing structure is installed at the connection points of each airbag; Automatic pressure relief valve, leakage alarm, or automatic air replenishment device installed inside the airbag.

[0015] In a preferred embodiment, the bottom annular airbag adopts a segmented structure, including an outer ring and an inner ring with independently controlled inflation. The outer ring is further divided into multiple independent sub-airbag spaces, which facilitates selective deflation to create avoidance space when encountering obstacles.

[0016] In a preferred embodiment, the traction system consists of two sets, which are respectively installed in the upper section and the lower section of the water diversion channel and connected to both ends of the airbag system. The traction system includes a winch, a rope, a tension application mechanism, and a wear-resistant component disposed in the flow channel. The rope is connected to the winch through the wear-resistant component. The rope of the traction system located in the upper section of the water diversion channel is connected to the forward tilt airbag or the height adjustment airbag. The rope of the traction system located in the lower section of the water diversion channel is connected to the bottom annular airbag; The wear-resistant component includes a retaining ring and multiple pulleys disposed within the retaining ring. The pulleys are arranged in a cross shape, forming a circular cavity in the middle to limit the movement of the rope.

[0017] The operating method of the combined airbag maintenance platform for water diversion channel maintenance described above includes the following steps: S1. Transport the deflated combined airbag maintenance platform to the designated work section through the water diversion channel inlet. S2. Inflate the bottom annular airbag to expand it and support it against the inner wall of the water diversion channel to form a basic support; S3. Inflate and adjust the height adjustment airbag and angle adjustment airbag to adjust the working platform to the required height and compensate for the flow channel slope, so that the top surface of the platform remains horizontal. When operating on a turning section, the forward tilt airbag is inflated and works in conjunction with the angle adjustment airbag to adjust the platform's attitude. S4. Conduct maintenance work on the established horizontal work platform; S5. Control the airbag system to move within the flow channel using the traction system, partially deflate the bottom annular airbag to reduce friction, and then control the airbag system to move to the next working position by retracting the rope using the traction system. After that, re-inflate and fix the bottom annular airbag. Repeat steps S2-S4 to complete the maintenance work in different sections. S6. After the operation is completed, deflate each airbag and remove the combined airbag maintenance platform from the flow channel using the traction system.

[0018] The present invention provides a combined airbag maintenance platform and operating method for water diversion channel maintenance operations. By adopting the above structure, it has the following beneficial effects: (1) Through the modular combination and coordinated adjustment of the bottom annular airbag, height adjustment airbag, angle adjustment airbag and forward tilting airbag, the present invention can adapt to the complex geometry of the water diversion channel. After inflation, the bottom annular airbag flexibly fits the inner wall of the channel with different diameters. The height adjustment airbag realizes the graded adjustment of the working height. The angle adjustment airbag accurately compensates for the slope of the channel. The forward tilting airbag makes fine-tuning of the attitude for the turning section. Thus, a stable horizontal working platform can be quickly built in various working conditions such as horizontal section, oblique straight section and turning section, which solves the core technical problem that traditional maintenance equipment is difficult to adapt to the changes in channel slope and curved structure. (2) The full airbag structure provides flexible cushioning, reducing the risk of fall injury. Each airbag module adopts a multi-chamber independent design, and the failure of a single airbag does not affect the overall structural stability, buying valuable time for personnel evacuation. At the same time, the inflatable protective railings set at the edge of the work platform form a flexible physical barrier to prevent personnel from falling. Combined with the wear-resistant layer and obstacle avoidance grooves on the outer surface of the bottom annular airbag, the risk of being scratched by sharp objects is effectively reduced. It is also equipped with a leakage protection system that integrates automatic depressurization, leakage alarm and automatic air replenishment functions, and monitors the airbag status in real time to ensure safe and reliable operation.

[0019] (3) All components adopt a modular and lightweight design to meet the requirements of manual handling in narrow entrances. Each airbag module is quickly and detachably connected by buckles, straps or hook and loop fasteners. Assembly and disassembly can be completed in the flow channel without complicated tools. The deployment time of the whole system is short, which significantly improves the response speed and turnover efficiency of maintenance operations.

[0020] (4) Through the precise adjustment of the height adjustment airbag and the angle adjustment airbag, the work platform always remains in a horizontal state, providing a stable and comfortable working environment for maintenance personnel, effectively reducing work fatigue and improving work efficiency. At the same time, the graded adjustment capability of the platform height allows the working range to cover the entire height of the flow channel. Combined with the precise positioning of the traction system, it enables all-round inspection and maintenance of the inner wall of the flow channel without blind spots, ensuring the quality of maintenance.

[0021] (5) This invention replaces traditional, bulky, and poorly adaptable customized mechanical maintenance equipment, reducing the investment cost of specialized equipment. In addition, its rapid deployment and withdrawal capabilities significantly shorten the downtime for hydropower station maintenance, reduce power generation losses caused by downtime, and bring significant indirect economic benefits. At the same time, the reusable nature of the equipment further reduces long-term operation and maintenance costs. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of an existing water diversion channel as described in the background section of this invention.

[0023] Figure 2 This is a schematic diagram of the overall structure of the airbag system of the present invention.

[0024] Figure 3 This is a schematic diagram of the bottom annular airbag structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the angle-adjustable airbag structure of the present invention.

[0026] Figure 5 This is a schematic diagram of the height-adjustable airbag structure of the present invention.

[0027] Figure 6 This is a schematic diagram of the inflatable protective barrier structure of the present invention.

[0028] Figure 7 This is a schematic diagram of the airbag system of the present invention within the horizontal section of the flow channel (the forward tilt airbag and the angle adjustment airbag are not inflated).

[0029] Figure 8 This is a schematic diagram of the airbag system of the present invention within the flow channel turning section.

[0030] Figure 9 This is a schematic diagram of the airbag system of the present invention in the inclined section of the water diversion channel (the forward-tilting airbag is not inflated).

[0031] Figure 10 This is a schematic diagram of the structure of the combined airbag of the present invention when it is operating in the water diversion channel.

[0032] Figure 11 This is a schematic diagram of the wear-resistant component of the present invention.

[0033] Figure 12 This is a schematic diagram of the structure when adjusting the bottom annular airbag of the present invention.

[0034] Figure 13 This is a schematic diagram of the central safety net of the bottom annular airbag of the present invention.

[0035] Figure 14 , Figure 15 This is a schematic diagram of the step structure of the height-adjustable airbag of the present invention.

[0036] In the diagram: 1. Bottom ring airbag, 2. Height adjustment airbag, 3. Forward tilt airbag, 4. Standing platform, 5. Angle adjustment airbag, 6. Inflatable guardrail, 7. Winch, 8. Tension application mechanism, 9. Rope, 10. Fixing ring, 11. Pulley, 12. Central safety net, 13. Wear-resistant layer, 14. Obstacle avoidance groove, 15. Outer ring, 16. Inner ring, 17. Step. Detailed Implementation

[0037] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0038] Example 1: like Figures 2-5 As shown, this embodiment provides a combined airbag maintenance platform for water diversion channel maintenance operations, including an airbag system and a traction system.

[0039] The airbag system includes a bottom annular airbag 1, a height-adjusting airbag 2, and an angle-adjusting airbag 5. After inflation, the bottom annular airbag 1 is supported on the inner wall of the water diversion channel, providing basic support for the entire maintenance platform. The height-adjusting airbag 2 and the angle-adjusting airbag 5 are positioned above the bottom annular airbag 1, and together, through inflation adjustment, form a horizontal working platform that adapts to changes in the channel slope.

[0040] At least one of the traction systems is disposed in the upper section of the water diversion channel for moving and positioning the airbag system within the channel.

[0041] like Figure 3 As shown, in this embodiment, the bottom annular airbag 1 has a ring-shaped structure and fits tightly against the inner wall of the flow channel after inflation. The bottom annular airbag 1 is made of a high-strength flexible material, which has sufficient load-bearing capacity and wear resistance. Its outer surface is provided with a wear-resistant layer 13, preferably made of nitrile rubber. The wear-resistant layer 13 is fixed to the pre-reserved holes on the surface of the airbag by means of rope binding, which facilitates maintenance and replacement.

[0042] like Figure 12 As shown, the bottom annular airbag 1 adopts a segmented structure, including an outer ring 15 and an inner ring 16 with independently controllable inflation. The outer ring 15 is further divided into multiple independent sub-airbag spaces. When encountering a large obstacle in the flow channel, the corresponding sub-airbag space can be selectively deflated to form an obstacle avoidance space (see attached figure). Figure 12 The break in the lower left area prevents the airbag from leaking due to scratches and ruptures, while also ensuring good passage performance.

[0043] like Figure 13 As shown, the bottom annular airbag 1 has a hollow annular structure, and a central safety net 12 is provided in the hollow area to prevent people from falling accidentally, forming a double safety protection.

[0044] like Figure 5 and Figure 14-15 As shown, the height-adjusting airbag 2 adopts a segmented structure, with each segment corresponding to a preset height, for example, each segment is 1100mm high. By inflating different segments of the airbag, the height of the work platform can be precisely adjusted, allowing the personnel's working range to cover the entire height of the flow channel. The height-adjusting airbag 2 is equipped with steps 17, the path of which runs from the bottom to the top of the inflated height-adjusting airbag 2, facilitating the climb of personnel to achieve all-round inspection of the flow channel.

[0045] like Figure 4 As shown, the angle-adjusting airbag 5 adopts a multi-layered segmented structure, with each layer corresponding to a preset tilt angle, for example, 5° per layer. By inflating airbags of different numbers of layers, the tilt angle of the platform can be precisely controlled, ensuring that the tilt angle between the platform and the horizontal plane is less than 5° when operating on slopes, thus ensuring the stability of personnel. Each airbag module consists of multiple independently inflatable air chambers. Through the separation design, even if some air chambers are damaged, the other air chambers can still function, without affecting the overall function, thus improving the safety and reliability of the system.

[0046] Example 2: like Figure 2 , Figure 8 As shown, in this embodiment, based on Embodiment 1, the airbag system further includes a forward tilt airbag 3. The forward tilt airbag 3 is connected to the side of the height adjustment airbag 2 away from the bottom annular airbag 1, and is used to adjust the forward tilt angle of the work platform during operation on turning sections.

[0047] The forward tilting airbag 3 also adopts a multi-layered segmented structure, with each layer corresponding to a preset tilting angle. During operation on the turning section, the forward tilting airbag 3 selectively inflates according to the curvature angle of the flow channel, pushing the front of the platform to rise or fall. It works in conjunction with the angle adjustment airbag 5 to ensure that the platform remains horizontal in the three-dimensional bending space.

[0048] like Figure 7-9 As shown, the usage status of the airbag system varies when operating in different flow channel sections: like Figure 7 As shown, when working on a horizontal section, a horizontal platform can be formed using only the bottom annular airbag 1 and the height adjustment airbag 2. The forward tilt airbag 3 and the angle adjustment airbag 5 do not need to be inflated or installed.

[0049] like Figure 9 As shown, during operation on the inclined and straight sections, the bottom annular airbag 1, the height adjustment airbag 2, and the angle adjustment airbag 5 work together. The angle adjustment airbag 5 counteracts the slope of the flow channel, forming a horizontal working surface.

[0050] like Figure 8 As shown, when operating on the turning section, the forward tilt airbag 3 is activated in addition to the angle adjustment airbag 5 to adjust the platform's pitch attitude in the curve and ensure that the platform remains horizontal in three-dimensional space.

[0051] Example 3: This embodiment, based on embodiment 1 or 2, also includes a detachable standing platform 4. For example... Figure 2As shown, the standing platform 4 is laid on top of the airbag system and is made of lightweight, rigid material, preferably rigid foam board, which can be quickly assembled by fastening or binding. The standing platform 4 provides a stable standing working surface for maintenance personnel, who can move and work on it. The standing platform 4 can be rearranged as the working position is adjusted.

[0052] In practical use, multiple rigid foam boards are pre-tied to the bottom annular airbag 1. After the maintenance personnel arrive at the work platform, they remove the multiple rigid foam boards, fasten them together to form a standing platform 4, and place it on the work platform, which moves with the personnel's work position.

[0053] Example 4: This embodiment, based on embodiment 1 or 2, also includes a safety protection device. For example... Figure 6 and Figure 13 As shown, the safety protection device includes an inflatable protective railing 6 installed at the edge of the work platform, and a central safety net 12 installed in the hollow area of ​​the bottom annular airbag 1.

[0054] The inflatable protective barrier 6 can come in two forms: one is a straight line, positioned on top of the height-adjustable airbag 2; the other is a U-shape, positioned on top of the forward-tilting airbag 3. Before operation, the inflatable protective barrier 6 is inflated and raised to form a flexible barrier; after operation, it is deflated and folded for easy storage.

[0055] The central safety net 12 is set within the hollow area of ​​the bottom annular airbag 1, such as... Figure 13 As shown, this forms a second layer of safety protection to prevent people from falling accidentally.

[0056] Example 5: This embodiment, based on embodiment 1 or 2, further includes a gas leakage protection system. The gas leakage protection system includes at least one of the following: The wear-resistant layer 13 is provided on the outer surface of the bottom annular airbag 1 to protect the airbag from wear; The obstacle avoidance groove 14 provided on the bottom annular airbag 1 prevents small obstacles from scratching the airbag; The multi-layer sealing structure, such as the Y-type sealing ring, is set at the connection of each airbag to ensure good sealing performance under both dynamic and static conditions. An automatic pressure relief valve, a leak alarm, or an automatic air replenishment device is connected to the inner cavity of the airbag. The automatic pressure relief valve is used to prevent overpressure of the airbag, the leak alarm detects leaks in a timely manner, and the automatic air replenishment device maintains stable air pressure.

[0057] Specifically, an automatic pressure relief device is installed in the airbag system. When the pressure inside the airbag exceeds a set value, the automatic pressure relief device is activated to prevent the airbag from rupturing due to excessive pressure. A pressure relief valve can be used; when the collected air pressure inside the airbag is higher than a preset value, the valve automatically opens to release the pressure.

[0058] Installing a leak alarm device in the airbag system will trigger an immediate alarm upon detecting a gas leak, alerting operators to take appropriate action. A combination of a pressure sensor and an alarm can be used; when the pressure sensor detects that the air pressure inside the airbag is below a preset value, it sends a signal to the alarm.

[0059] Once the alarm system detects a leak, it automatically replenishes air based on the internal pressure to maintain a stable pressure within a certain range, preserving the airbag's shape and ensuring personnel safety. The fan continues to operate until the airbag is removed from the pipeline before repairs are carried out.

[0060] Example 6: This embodiment further defines the traction system based on Embodiment 2. For example... Figure 10 As shown, the traction system consists of two sets, which are respectively installed in the upper section and the lower section of the water diversion channel, and are respectively connected to both ends of the airbag system.

[0061] The traction system includes a winch 7, a rope 9, a tension application mechanism 8, and a wear-resistant component disposed in the flow channel. The rope 9 is connected to the winch 7 through the wear-resistant component.

[0062] The traction system rope 9 located in the upper section of the water diversion channel is connected to the forward tilt airbag 3 or the height adjustment airbag 2. The traction system rope 9 located in the lower section of the water diversion channel is connected to the bottom annular airbag 1.

[0063] like Figure 11 As shown, the wear-resistant component includes a retaining ring 10 and multiple pulleys 11 disposed within the retaining ring 10. The pulleys 11 are arranged in a cross shape, forming a circular cavity in the middle to limit the rope 9 and prevent the rope from slipping out. The upper traction rope has wear-resistant components installed on the upper side of the flow channel in the upper horizontal section and the turning section, and the lower traction steel cable has wear-resistant components installed on the lower side of the flow channel in the lower horizontal section and the turning section.

[0064] The airbag assembly at the top of the flow channel is inflated and lifted, with the upper traction cable directly connected to the forward-tilting airbag 3. The lower traction cable is connected to the bottom annular airbag 1, which adheres tightly to the flow channel wall through friction. During movement, the bottom annular airbag 1 is partially deflated to reduce friction with the inner wall of the flow channel. Then, the movement is controlled by releasing the traction cable via the upper winch 7 or retracting the traction cable via the lower winch 7. Upon reaching the target position, the bottom annular airbag 1 is re-inflated, causing it to be fixed in place by frictional compression with the flow channel.

[0065] Example 7: The operation method of the combined airbag maintenance platform disclosed in the foregoing embodiments is as follows: S1. Equipment Introduction Procedure: The deflated combined airbag maintenance platform is transported to the designated work area through the water inlet. Due to the modular and lightweight design of each component, each piece weighs less than 50kg, facilitating manual handling through narrow entrances.

[0066] S2. Basic support establishment steps: Inflate the bottom annular airbag 1 to expand it and support it against the inner wall of the water diversion channel, forming a basic support. After inflation, the bottom annular airbag 1 is tightly attached to the channel wall, providing a stable support foundation for the entire platform.

[0067] S3. Work Platform Construction Steps: Inflate and adjust the height adjustment airbag 2 and angle adjustment airbag 5 to adjust the work platform to the required height and compensate for the flow channel slope, ensuring the top surface of the platform remains horizontal. The height adjustment airbag 2 uses segmented inflation, selecting the number of inflation segments according to the required height; the angle adjustment airbag 5 uses multi-layer inflation, selecting the number of inflation layers according to the flow channel slope to accurately compensate for the slope.

[0068] When operating on a turning section, the forward tilt airbag 3 is inflated and works in conjunction with the angle adjustment airbag 5 to adjust the platform's attitude, ensuring that the platform remains level in the three-dimensional bending space.

[0069] At the same time, the inflatable protective railing 6 at the edge of the work platform is inflated to form a flexible safety barrier; the standing platform 4 is laid on top of the airbag system to provide a stable standing working surface for maintenance personnel.

[0070] S4. Work Implementation Steps: Conduct maintenance work on the formed horizontal working platform. Personnel move up and down the platform via the steps 17 on the height-adjustable airbag 2, and move on the standing platform 4 to achieve comprehensive inspection and maintenance of the inner wall of the flow channel.

[0071] S5. Equipment relocation procedure: The airbag system is moved within the flow channel by controlling the traction system. Specifically, the bottom annular airbag 1 is partially deflated to reduce friction. The airbag system is then moved to the next working position by controlling the release and retraction of rope 9 using the traction system. The bottom annular airbag 1 is then re-inflated and secured. Steps S2-S4 are repeated to complete the maintenance work in different sections.

[0072] When two traction systems are used, the airbag system can be moved bidirectionally and positioned precisely through the coordinated operation of the upper and lower traction systems.

[0073] S6. Equipment Removal Procedure: After the operation is completed, deflate each airbag and remove the combined airbag maintenance platform from the flow channel using the traction system. Each airbag module is deflated and folded for easy storage and transportation.

Claims

1. A combined airbag maintenance platform for water diversion channel maintenance operations, characterized in that: Including airbag systems and traction systems; The airbag system includes a bottom annular airbag (1), a height adjustment airbag (2), and an angle adjustment airbag (5); The bottom annular airbag (1) is inflated and supported on the inner wall of the water diversion channel, providing basic support for the entire maintenance platform; The height adjustment airbag (2) and angle adjustment airbag (5) are set on the bottom annular airbag (1) and together they form a horizontal working platform that adapts to the change of the flow channel slope through inflation adjustment. At least one of the traction systems is disposed in the upper section of the water diversion channel for moving and positioning the airbag system within the channel.

2. The combined airbag maintenance platform for water diversion channel maintenance operations according to claim 1, characterized in that: The airbag system also includes a forward tilt airbag (3), which is connected to the side of the height adjustment airbag (2) away from the bottom annular airbag (1) and is used to adjust the forward tilt angle of the work platform when working on the turning section.

3. The combined airbag maintenance platform for water diversion channel maintenance operations according to claim 1, characterized in that: The angle adjustment airbag (5) and the forward tilt airbag (3) adopt a multi-layer segmented structure, with each layer corresponding to a preset tilt angle; The height adjustment airbag (2) adopts a segmented structure, with each segment corresponding to a preset height.

4. The combined airbag maintenance platform for water diversion channel maintenance operations according to claim 1, characterized in that: It also includes a detachable standing platform (4), which is laid on top of the airbag system to provide a stable standing working surface for maintenance personnel.

5. A combined airbag maintenance platform for water diversion channel maintenance operations according to claim 1, characterized in that: The height adjustment airbag (2) is provided with a step (17), and the path of the step (17) is set from the bottom of the inflated height adjustment airbag (2) to the top of the height adjustment airbag (2).

6. The combined airbag maintenance platform for water diversion channel maintenance operations according to claim 1, characterized in that: It also includes safety protection devices, which include an inflatable guardrail (6) set at the edge of the work platform and a central safety net (12) set in the hollow area of ​​the bottom annular airbag (1).

7. A combined airbag maintenance platform for water diversion channel maintenance operations according to claim 1, characterized in that: It also includes a gas leakage protection system, which includes at least one of the following: A wear-resistant layer (13) is disposed on the outer surface of the bottom annular airbag (1). Obstacle avoidance groove (14) is provided on the bottom annular airbag (1). A multi-layer sealing structure is installed at the connection points of each airbag; Automatic pressure relief valve, leakage alarm, or automatic air replenishment device installed inside the airbag.

8. The combined airbag maintenance platform for water diversion channel maintenance operations according to claim 2, characterized in that: The bottom annular airbag (1) adopts a segmented structure, including an outer ring (15) and an inner ring (16) with independent inflation control. The outer ring (15) is further divided into multiple independent sub-airbag spaces, which facilitates selective deflation to form an obstacle avoidance space when encountering obstacles.

9. The combined airbag maintenance platform for water diversion channel maintenance operations according to claim 2, characterized in that: The traction system consists of two sets, which are respectively installed in the upper section and the lower section of the water diversion channel and connected to both ends of the airbag system. The traction system includes a winch (7), a rope (9), a tension application mechanism (8), and a wear-resistant component disposed in the flow channel. The rope (9) is connected to the winch (7) through the wear-resistant component. The rope (9) of the traction system located in the upper section of the water diversion channel is connected to the forward tilt airbag (3) or the height adjustment airbag (2); The rope (9) of the traction system located in the lower section of the water diversion channel is connected to the bottom annular airbag (1); The wear-resistant component includes a fixed ring (10) and a plurality of pulleys (11) disposed within the fixed ring (10). The pulleys (11) are arranged in a cross shape, forming a circular cavity in the middle to limit the rope (9).

10. The operating method of the combined airbag maintenance platform for water diversion channel maintenance operations according to any one of claims 1-9, characterized in that... Includes the following steps: S1. Transport the deflated combined airbag maintenance platform to the designated work section through the water diversion channel inlet. S2. Inflate the bottom annular airbag (1) to expand it and support it on the inner wall of the water diversion channel to form a basic support; S3. Inflate and adjust the height adjustment airbag (2) and angle adjustment airbag (5) to adjust the working platform to the required height and compensate for the slope of the flow channel so that the top surface of the platform remains horizontal. When operating on a turning section, the forward tilt airbag (3) is inflated and works in conjunction with the angle adjustment airbag (5) to adjust the platform attitude. S4. Conduct maintenance work on the established horizontal work platform; S5. Control the airbag system to move in the flow channel by the traction system, partially deflate the bottom annular airbag (1) to reduce friction, control the airbag system to move to the next working position by the traction system to release and retract the rope (9), and then re-inflate and fix the bottom annular airbag (1). Repeat steps S2-S4 to complete the maintenance work of different sections. S6. After the operation is completed, deflate each airbag and remove the combined airbag maintenance platform from the flow channel using the traction system.

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