Waterway drag chain type inspection system and inspection method

Abstract

The application discloses a water diversion channel drag chain type maintenance system and a maintenance method thereof, and the system comprises a drag chain vehicle system, a support fixing assembly and a maintenance assembly; the drag chain vehicle system provides driving force when traveling along the wall surface of the water diversion channel; the support fixing assembly comprises a diagonal support assembly and a horizontal support assembly which are hinged to the drag chain vehicle system, the end of the diagonal support assembly abuts against the inner wall surface on the opposite side when the diagonal support assembly is unfolded, and the horizontal support assembly is hung below the diagonal support assembly; the maintenance assembly comprises a slewing assembly and a working basket which are connected to the horizontal support assembly, and the slewing assembly drives the working basket to horizontally rotate to closely abut against the inner wall surface for maintenance. The drag chain vehicle system drives the maintenance assembly to travel and work in the water diversion channel, the maintenance complexity is reduced, the delicacy, safety and reliability of the maintenance work are ensured, and full coverage maintenance of the water diversion channel is realized.

Description

Technical Field

[0001] This invention relates to the field of hydropower station intake channel maintenance technology, specifically a drag chain maintenance system and method for water diversion channels. Background Technology

[0002] Hydropower stations have complex and extensive internal piping systems that perform multiple functions, including water, oil, and gas transportation. Their intake channels are typically made of concrete, which is susceptible to erosion, wear, and damage over time due to the flow of water, sand, and other debris. As the power station operates, problems such as pipe aging, corrosion, and blockage become increasingly apparent, necessitating regular maintenance and repair. Therefore, the demand for pipeline maintenance equipment is becoming increasingly urgent.

[0003] Water diversion channels are typically characterized by enclosed spaces, narrow inlets and outlets, and large vertical drops, which pose significant challenges to maintenance operations. Specifically, the following technical problems exist: Due to the narrow inlet space of the water diversion channel, large lifting equipment cannot enter, making it difficult to transport maintenance equipment and materials to the work location.

[0004] Traditional maintenance platforms or suspended baskets are prone to swaying when operating in the vertical section, which not only affects the accuracy of maintenance but also poses safety hazards, making it extremely difficult for personnel to get close for inspection and for high-altitude repair work.

[0005] Existing technologies typically only inspect and repair the bottom plate of the horizontal section of the flow channel, while the vertical section is inspected and recorded using drones. This results in a small scope of inspection, which not only fails to achieve full coverage of the flow channel inspection but also significantly impacts work efficiency and overall inspection quality.

[0006] To address the aforementioned problems, some solutions have been proposed in the prior art. For example, Chinese invention patent CN118270673A discloses a water diversion channel maintenance equipment and its usage method. This equipment includes a mobile chassis, a personnel access passage, a climbing mechanism, a personnel-carrying mechanism, a pulley system, a winch, and other components. The equipment moves within the channel via the mobile chassis and uses the winch and pulley system to raise and lower the personnel-carrying mechanism, thus enabling maintenance work on the vertical sections of the water diversion channel. However, this prior art still has the following shortcomings: (1) The equipment uses a winch to pull the basket for lifting operations. The basket still sways when running in the vertical section and needs to rely on the pulley block anchored at the top, which requires a high bearing capacity of the top anchor point. (2) The manned operation mechanism of the equipment adopts a concentric circle structure of the mother basket and the daughter basket, which is relatively complex and the assembly and operation process is cumbersome. (3) The equipment lacks a mechanism for multi-point and multi-angle stable support inside the flow channel, and there is still room for improvement in the accessibility and flexibility of the working platform; (4) The personnel passage of the equipment is composed of articulated unit passages. Although it has a certain degree of adaptability, the stability and safety of the passages still need to be strengthened in the transition area between the vertical and horizontal sections. Summary of the Invention

[0007] The technical problem to be solved by this invention is to provide a drag chain maintenance system and method for water diversion channels. It aims to solve the problems of existing water diversion channel maintenance equipment having difficulty moving in vertical sections, unstable support, and limited maintenance range. By using a drag chain vehicle system that can climb along the wall and a diagonal bracing component that is deployed and pressed against the opposite side wall to form a stable triangular support structure, and using a rotating component to drive the working basket to rotate 360° along the inner wall, safe, stable, and blind-spot-free full-coverage maintenance of the entire water diversion channel, especially the vertical section, is achieved, which greatly improves the stability, safety and work efficiency of maintenance operations.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a water diversion channel drag chain maintenance system, including a drag chain vehicle system, a support and fixing component and a maintenance component; The chain-carrying vehicle system is installed in the water diversion channel and can travel along the wall of the water diversion channel to provide driving force; The support and fixing assembly includes a diagonal brace assembly and a horizontal support assembly hinged to the cable car system. The diagonal brace assembly can be extended and retracted. When in the extended state, the end of the diagonal brace assembly abuts against the inner wall surface of the water diversion channel opposite to the cable car system. The horizontal support assembly is suspended below the diagonal brace assembly. The maintenance assembly includes a slewing assembly and a working basket that are movably connected to the horizontal support assembly. The slewing assembly can drive the working basket to rotate horizontally, so that the working basket is close to the inner wall of the water diversion channel.

[0009] In a preferred embodiment, the diagonal bracing assembly includes a diagonal bracing rod, the first end of which is hinged to the chain conveyor system via an intermediate pin connecting block, and the tail end of which abuts against the inner wall of the water diversion channel. The diagonal brace is equipped with several telescopic and adjustable slings, the other end of which is connected to the horizontal support assembly to adjust the posture of the horizontal support assembly. The diagonal brace is also connected to a safety rope, which extends to the middle or rear of the chain vehicle system and tightens the diagonal brace.

[0010] In a preferred embodiment, the slewing assembly includes a slewing seat connected to a horizontal support assembly, a lifting beam connected to the slewing seat, and a slewing beam disposed below the lifting beam; The working basket is located at one end of the slewing beam, and a balance adjustment component is located at the other end of the slewing beam. The lifting beam is equipped with at least two lifting adjustment seats, which are connected to the slewing beam and used to adjust the angle of the slewing beam relative to the lifting beam.

[0011] In a preferred embodiment, the balance adjustment assembly includes a top support rod disposed on the slewing beam and a counterweight block slidably disposed on the top support rod. The counterweight block can move axially along the top support rod to adjust the balance of the slewing beam.

[0012] In a preferred embodiment, the cable car system includes several parallel cable car groups, each cable car group including several cable cars that are articulated sequentially, and the main beam of the first cable car at the foremost end of the cable car group is provided with a connection position that is articulated with the support and fixing components. Each of the aforementioned cable carriers includes a main beam, a traveling assembly mounted on the main beam, and an enclosed guardrail mounted above the main beam to form a guardrail passage.

[0013] In a preferred embodiment, the walking assembly includes a support arm structure connected to the main beam. The support arm structure includes a bottom support arm and a reinforcing support arm. The middle part of the bottom support arm is connected to the main beam through a support arm seat. The reinforcing support arms are symmetrically arranged on both sides of the main beam and connected to the bottom support arm to form a V-shaped structure. The two ends of the bottom support arm are provided with walking wheels.

[0014] In a preferred embodiment, the main beam is provided with several connecting grooves, and the enclosed guardrail is detachably installed at the connecting grooves; The enclosed guardrail includes a first connecting part and a second connecting part. The first connecting part is connected to a connecting groove, and the second connecting part is connected to the first connecting part to form a closed structure.

[0015] In a preferred embodiment, the cable car includes a front hook structure located at the front end of the main beam and a rear hook structure located at the rear end of the main beam. The front hook structure and the rear hook structure are used for articulated connection between adjacent cable cars. The front end of the main beam is provided with a fixed hinge seat, and the front coupler structure includes a first hinge ring and a second hinge ring. The first hinge ring is connected to the fixed hinge seat, and the second hinge ring is fixedly connected to the first hinge ring. The hinge directions of the first hinge ring and the second hinge ring form an angle. The rear end of the main beam is provided with a beam end cap, on which a rotating connection hole is formed. The rear coupler structure includes a slewing shaft and a movable hinge seat. The slewing shaft is rotatably engaged with the rotating connection hole, and the movable hinge seat is connected and fixed on the slewing shaft.

[0016] In a preferred embodiment, the horizontal support assembly is provided with a downward-extending working ladder, the lower end of which extends to the working basket to establish a personnel passage.

[0017] The maintenance method based on the above-mentioned water diversion channel cable chain maintenance system includes the following steps: S1. Deploy the chain truck system in the water diversion channel and allow it to travel along the channel wall to the designated maintenance position. S2. Unfold the diagonal brace assembly that is hinged to the chain trolley system, so that its end abuts against the inner wall surface of the water channel opposite to the chain trolley system; S3. Unfold the support fixing component connected to the diagonal brace component and hang it below the diagonal brace component; S4. The working basket is driven to rotate horizontally by the slewing component, so that the working basket can move along the inner wall of the water diversion channel and carry out maintenance work. S5. After the maintenance is completed, retract the support fixing components and diagonal brace components in sequence, so that they fit into the cable car system, and move them to the next maintenance position or out of the water diversion channel via the cable car system.

[0018] The water diversion channel drag chain maintenance system and method provided by the present invention have the following beneficial effects by adopting the above structure: (1) The use of a drag chain vehicle system that can climb vertically along the wall can directly transport the support and fixing components and maintenance components to the vertical and inclined sections of the water diversion channel, which are difficult for traditional equipment to reach for operation. At the same time, the rotating component can drive the working basket to rotate 360° in the horizontal direction, so that maintenance personnel can perform fine inspection and repair work at any position close to the inner wall of the channel. This completely overcomes the limitations of the existing technology, which can only perform maintenance on the horizontal section and can only rely on drones for rough inspection of the vertical section, and significantly improves the comprehensiveness and thoroughness of the water diversion channel maintenance. (2) In this invention, the end of the inclined brace component, after being unfolded, abuts against the inner wall of the water diversion channel and the chain trolley system, forming a stable triangular support structure with the chain trolley system. The horizontal support component and the maintenance component are reliably suspended below the inclined brace component, ensuring the stability of the working basket during vertical operation. This effectively solves the technical problem that existing suspended maintenance equipment is prone to shaking during vertical operation, affecting maintenance accuracy and posing safety hazards. At the same time, the balance adjustment component can adjust the balance state of the slewing beam in real time by sliding the counterweight along the axial direction of the top support rod, further ensuring the stability of the working basket during the slewing process. (3) The self-supporting structure is adopted. Stability can be achieved by pressing the diagonal bracing components against the opposite side wall. There is no need to drill holes at the top of the channel to install pulley blocks or anchor points. This not only simplifies the installation process and improves the work efficiency, but also avoids damage to the existing structure of the water diversion channel, reduces the risk of installation and the potential impact on the channel structure, and has significant engineering adaptability. (4) The chain truck system integrates driving, personnel passage and equipment carrying. The enclosed guardrail forms a safe personnel passage. Personnel can move with the system to the maintenance position. After maintenance is completed, the system can be retracted as a whole and moved to the next maintenance position to quickly start a new round of work. Compared with the cumbersome process of re-laying steel cables and pulley blocks in the existing technology, the work efficiency of the present invention is significantly improved. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a structural diagram of the support and fixing components and the maintenance components of the present invention.

[0021] Figure 3-5 This is a schematic diagram of the maintenance component of the present invention at different maintenance locations.

[0022] Figure 6 This is a schematic diagram of the overall structure of the cable car of the present invention.

[0023] Figure 7 This is a side view of the cable car of the present invention.

[0024] Figure 8 For the present invention Figure 7 Schematic diagram of cross-section at point AA.

[0025] Figure 9 For the present invention Figure 7 Schematic diagram of cross-section at point BB.

[0026] Figure 10 This is a structural schematic diagram of the main beam in this invention.

[0027] Figure 11 This is a front view of the main beam in this invention.

[0028] Figure 12 This is a cross-sectional view of the main beam in this invention.

[0029] Figure 13 This is a partial structural diagram of the chain-carrying vehicle system in the deployed state of the diagonal struts.

[0030] In the diagram: 1. Main beam; 2. Traveling assembly; 201. Traveling wheel; 202. Bottom support arm; 203. Reinforcing support arm; 204. Support arm seat; 3. Enclosed guardrail; 301. First connecting part; 302. Second connecting part; 4. Front hook structure; 401. Second hinge ring; 402. First hinge ring; 5. Rear hook structure; 6. Fixed hinge seat; 7. Connecting groove; 8. Beam end cap; 801. Rotary connecting hole; 9. Tractor chain assembly; 901. First section of tractor chain; 10. Diagonal brace; 11. Intermediate pin connecting block; 12. Tractor chain system; 13. Water diversion channel; 14. Safety rope; 15. Diagonal brace assembly; 16. Horizontal support assembly; 17. Rotary assembly; 18. Working basket; 19. Working ladder; 20. Sling; 21. Lifting beam; 22. Rotary beam; 23. Top support rod; 24. Balance adjustment assembly. Detailed Implementation

[0031] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0032] Example 1: like Figures 1-5 As shown, this embodiment provides a water diversion channel drag chain maintenance system, including a drag chain vehicle system 12, a support and fixing component, and a maintenance component.

[0033] like Figure 1 As shown, the chain conveyor system 12 is disposed in the water inlet channel 13 and can travel along the wall of the water inlet channel 13 to provide driving force. The support and fixing assembly includes a diagonal brace assembly 15 and a horizontal support assembly 16 hinged to the chain conveyor system 12. The diagonal brace assembly 15 can be extended and retracted. When the horizontal support assembly 16 and the diagonal brace assembly 15 are retracted, they deflect to fit against the chain conveyor system 12; when the horizontal support assembly 16 and the diagonal brace assembly 15 are extended, the diagonal brace assembly 15 deflects to its end abutting against the inner wall of the water inlet channel 13 opposite to the chain conveyor system 12, while the horizontal support assembly 16 is suspended below the diagonal brace assembly 15. The maintenance assembly includes a slewing assembly 17 and a work basket 18 movably connected to the horizontal support assembly 16. The slewing assembly 17 rotates horizontally and drives the work basket 18 to move along the inner wall of the water inlet channel 13 to perform maintenance operations.

[0034] like Figure 1 , Figure 2 and combined Figure 13 As shown, the diagonal bracing assembly 15 includes a diagonal bracing rod 10. The first end of the diagonal bracing rod 10 is hinged to the chain conveyor system 12, and the tail end of the diagonal bracing rod 10 extends to and abuts against the opposite side wall of the water diversion channel 13. The diagonal bracing rod 10 is also connected to a safety rope 14, which extends to the middle or rear end of the chain conveyor system 12 and is fixed to tighten the diagonal bracing rod 10.

[0035] like Figure 2As shown, several slings 20 are provided on the diagonal brace 10. The upper end of the sling 20 is in a telescopic cooperation with the diagonal brace 10, and the lower end of the sling 20 is connected to the horizontal support assembly 16. When the tail end of the diagonal brace 10 abuts against the wall of the water diversion channel 13, the sling 20 adjusts its telescopic movement to deflect the horizontal support assembly 16 to a set angle.

[0036] like Figures 2-5 As shown, the horizontal support assembly 16 includes a horizontal support platform that is hinged to the chain carrier system 12, and several horizontal support rods are connected to the horizontal support platform. The horizontal support assembly 16 is also provided with a downwardly extending working ladder 19, the upper end of which is connected to the horizontal support platform, and the lower end of which extends toward the maintenance assembly.

[0037] like Figures 2-5 As shown, the slewing assembly 17 includes a slewing seat that is connected and cooperates with the horizontal support assembly 16. A lifting beam 21 is connected to the slewing seat, and a slewing beam 22 is connected below the lifting beam 21. The working basket 18 is disposed on the slewing beam 22. When the lifting beam 21 rotates, it drives the slewing beam 22 and the working basket 18 to rotate synchronously.

[0038] like Figure 2 As shown, the work basket 18 is located at one end of the slewing beam 22, and the other end of the slewing beam 22 is equipped with a bidirectional automatic balancing system. The bidirectional automatic balancing system includes a top support rod 23 mounted on the slewing beam 22, and a balance adjustment assembly 24 mounted on the top support rod 23. The balance adjustment assembly 24 includes a counterweight block slidably mounted on the top support rod 23, which moves axially along the top support rod 23 to adjust the balance of the slewing beam 22.

[0039] like Figures 2-4 As shown, at least two lifting adjustment seats are provided on the lifting beam 21. The lifting adjustment seats are connected to the slewing beam 22 and used to adjust the angle of the slewing beam 22 relative to the lifting beam 21.

[0040] like Figures 6-13 As shown, the chain carrier system 12 includes a drive unit and a chain carrier array. The drive unit propels the chain carrier array along a predetermined path. The chain carrier array comprises several parallel-moving chain carrier groups 9. The first chain carrier 901 is located at the bottom of the chain carrier group 9, and the main beam 1 of the first chain carrier 901 is provided with an intermediate hinge position for connecting and supporting fixed components. The chain carrier group 9 comprises several chain carriers.

[0041] like Figure 6 , Figure 7As shown, the cable car includes a main beam 1, on which several traveling components 2 are mounted. Several frame-shaped enclosed guardrails 3 are connected and mounted above the main beam 1, forming a guardrail passage. A front hook structure 4 is provided at the front end of the main beam 1 for hinged connection to the cable car in front, and a rear hook structure 5 is provided at the rear end of the main beam 1 for hinged connection to the cable car behind.

[0042] like Figure 6 , Figure 10 As shown, the main beam 1 is provided with several connecting grooves 7, and the enclosed guardrail 3 is detachably installed at the connecting grooves 7. Specifically, a connecting block is fixedly connected to the main beam 1, the connecting groove 7 is formed on the connecting block, the connecting block is made of channel steel and welded to the main beam 1.

[0043] like Figure 8 As shown, the enclosed guardrail 3 includes a first connecting part 301 and a second connecting part 302. The first connecting part 301 is connected to the connecting groove 7, and the second connecting part 302 is connected to the first connecting part 301 to form a closed structure.

[0044] like Figure 10 , Figure 11 As shown, the walking assembly 2 includes a support arm structure connected and mounted on the main beam 1. The support arm structure includes a bottom support arm 202 and a reinforcing support arm 203. A support arm seat 204 is provided at the main beam 1, and a support arm hole is formed on the support arm seat 204. The bottom support arm 202 is fixedly installed on the support arm seat 204. The reinforcing support arms 203 are symmetrically arranged on both sides of the main beam 1 and connected to the bottom support arm 202 to form a V-shaped structure. Walking wheels 201 are provided at both ends of the bottom support arm 202.

[0045] like Figure 6 , Figure 9 , Figure 12 As shown, a fixed hinge seat 6 is provided at the front end of the main beam 1. The front coupler structure 4 includes a first hinge ring 402 and a second hinge ring 401. The first hinge ring 402 is connected to the fixed hinge seat 6, and the second hinge ring 401 is fixedly connected to the first hinge ring 402. The hinge directions of the first hinge ring 402 and the second hinge ring 401 form a 90° angle.

[0046] like Figure 6 , Figure 12 As shown, the rear end of the main beam 1 is provided with a beam end cap 8, and a rotating connection hole 801 is formed on the beam end cap 8. The rear coupler structure 5 includes a rotating shaft and a movable hinge seat. The rotating shaft is rotatably engaged with the rotating connection hole 801, and the movable hinge seat is connected and fixed on the rotating shaft and rotates synchronously.

[0047] like Figure 13As shown, the main beam 1 of the first section of the chain trailer 901 has an intermediate hinge position, and an intermediate pin connecting block 11 is provided at the intermediate hinge position. The intermediate pin connecting block 11 is used to connect the diagonal brace 10. A jack is also connected to the main beam 1, which is used to drive the diagonal brace 10 to deflect around the intermediate hinge position. A hydraulic pump bracket is also connected to the main beam 1 to fix the hydraulic pump, and the hydraulic pump is connected to the jack to deliver hydraulic medium.

[0048] In this embodiment, the water diversion channel cable-driven maintenance system utilizes the cable car system 12 to provide driving force, propelling the support and maintenance components within the water diversion channel 13 to a designated maintenance position. Upon reaching the predetermined position, the diagonal brace assembly 15 is deployed, its end pressed against the inner wall of the water diversion channel 13 opposite to the cable car system 12, and simultaneously secured by the safety rope 14. Next, the horizontal support assembly 16 is deflected to a set angle by adjusting the telescopic length of the sling 20. Then, the working basket 18 is rotated horizontally via the slewing assembly 17, causing it to move along the inner wall of the water diversion channel 13. Maintenance personnel descend into the working basket 18 via the working ladder 19 to perform maintenance work. After maintenance is completed, the support and maintenance components and the diagonal brace assembly 15 are sequentially retracted, fitting against the cable car system 12, and the system is then moved to the next maintenance position or exits the water diversion channel 13 via the cable car system 12.

[0049] Example 2: This embodiment provides a maintenance method for a water diversion channel drag chain maintenance system based on Embodiment 1, including the following steps: Step S1: Deploy the chain truck system 12 in the water diversion channel 13 and make it travel along the channel wall to the set maintenance position; Step S2: Unfold the diagonal brace assembly 15 hinged to the chain carrier system 12, so that its end abuts against the inner wall surface of the water channel 13 opposite to the chain carrier system 12; Step S3: Unfold the support fixing component connected to the diagonal brace assembly 15 and hang it below the diagonal brace assembly 15; Step S4: The rotating assembly 17 drives the working basket 18 to rotate horizontally, so that the working basket 18 moves along the inner wall of the water diversion channel 13 and performs maintenance work. Step S5: After the maintenance is completed, retract the support fixing component and the diagonal brace component 15 in sequence, so that they fit into the cable car system 12, and move them to the next maintenance position or exit the water diversion channel 13 through the cable car system 12.

[0050] Example 3: Based on Example 2, the specific operations of steps S2 and S3 are as follows: In this embodiment, in step S2, the diagonal brace 10 is driven to deflect around the intermediate hinge position by a jack installed on the chain conveyor system 12, so that its end abuts against the inner wall of the water diversion channel 13, and the diagonal brace 10 is tightened and fixed by a safety rope 14. In step S3, the horizontal support assembly 16 is deflected to a preset horizontal angle by adjusting the extension length of the sling 20 on the diagonal brace 10.

[0051] Example 4: This embodiment is basically the same as embodiment 2, except for the specific operation of step S4.

[0052] In this embodiment, in step S4, the slewing seat drives the lifting beam 21 to rotate, which in turn drives the slewing beam 22 and the working basket 18 connected to the lifting beam 21 to rotate synchronously. During the rotation of the working basket 18, the axial position of the counterweight on the top support rod 23 is adjusted to maintain the stability of the working basket 18.

Claims

1. A water diversion channel cable chain maintenance system, characterized in that: Includes a cable car system (12), support and fixing components, and maintenance components; The chain-carrying vehicle system (12) is located in the water diversion channel (13) and can travel along the wall of the water diversion channel (13) to provide driving force; The support and fixing assembly includes a diagonal brace assembly (15) hinged to the chain truck system (12) and a horizontal support assembly (16). The diagonal brace assembly (15) can be extended and retracted. When in the extended state, the end of the diagonal brace assembly (15) abuts against the inner wall surface of the water diversion channel (13) opposite to the chain truck system (12). The horizontal support assembly (16) is suspended below the diagonal brace assembly (15). The maintenance assembly includes a slewing assembly (17) and a working basket (18) that are movably connected to the horizontal support assembly (16). The slewing assembly (17) can drive the working basket (18) to rotate in the horizontal direction, so that the working basket (18) is close to the inner wall of the water diversion channel (13).

2. The water diversion channel drag chain maintenance system according to claim 1, characterized in that: The diagonal bracing assembly (15) includes a diagonal bracing rod (10), the first end of which is hinged to the chain trolley system (12) via an intermediate pin connecting block (11), and the tail end of which is pressed against the inner wall of the water diversion channel (13). The diagonal brace (10) is provided with several telescopic and adjustable slings (20), and the other end of the slings (20) is connected to the horizontal support assembly (16) to adjust the posture of the horizontal support assembly (16); The diagonal brace (10) is also connected to a safety rope (14), which extends to the middle or tail of the chain trailer system (12) and tightens the diagonal brace (10).

3. The water diversion channel drag chain maintenance system according to claim 1, characterized in that: The slewing assembly (17) includes a slewing seat connected to the horizontal support assembly (16), a lifting beam (21) connected to the slewing seat, and a slewing beam (22) disposed below the lifting beam (21). The working basket (18) is located at one end of the slewing beam (22), and the other end of the slewing beam (22) is provided with a balance adjustment component (24). At least two lifting adjustment seats are provided on the lifting beam (21). The lifting adjustment seats are connected to the slewing beam (22) and are used to adjust the angle of the slewing beam (22) relative to the lifting beam (21).

4. The water diversion channel drag chain maintenance system according to claim 3, characterized in that: The balance adjustment assembly (24) includes a top support rod (23) disposed on the slewing beam (22) and a counterweight block slidably disposed on the top support rod (23). The counterweight block can move axially along the top support rod (23) to adjust the balance of the slewing beam (22).

5. The water diversion channel drag chain maintenance system according to claim 1, characterized in that: The cable car system (12) includes several parallel cable car groups (9), and each cable car group (9) includes several cable cars that are articulated in sequence. The first cable car (901) at the front end of the cable car group (9) has a connection position that is articulated with the support and fixing components. Each of the aforementioned trailer trucks includes a main beam (1), a traveling assembly (2) mounted on the main beam (1), and a closed guardrail (3) mounted above the main beam (1) to form a guardrail passage.

6. The water diversion channel drag chain maintenance system according to claim 5, characterized in that: The walking assembly (2) includes a support arm structure connected to the main beam (1). The support arm structure includes a bottom support arm (202) and a reinforcing support arm (203). The middle part of the bottom support arm (202) is connected to the main beam (1) through a support arm seat (204). The reinforcing support arm (203) is symmetrically arranged on both sides of the main beam (1) and connected to the bottom support arm (202) to form a V-shaped structure. The two ends of the bottom support arm (202) are provided with walking wheels (201).

7. A water diversion channel drag chain maintenance system according to claim 5, characterized in that: The main beam (1) is provided with several connecting grooves (7), and the closed guardrail (3) is detachably installed at the connecting grooves (7); The enclosed guardrail (3) includes a first connecting part (301) and a second connecting part (302). The first connecting part (301) is connected to the connecting groove (7), and the second connecting part (302) is connected to the first connecting part (301) to form a closed structure.

8. A water diversion channel drag chain maintenance system according to claim 5, characterized in that: The cable car includes a front hook structure (4) located at the front end of the main beam (1) and a rear hook structure (5) located at the rear end of the main beam (1). The front hook structure (4) and the rear hook structure (5) are used for articulated connection between adjacent cable cars. The front end of the main beam (1) is provided with a fixed hinge seat (6), and the front coupler structure (4) includes a first hinge ring (402) and a second hinge ring (401). The first hinge ring (402) is connected to the fixed hinge seat (6), and the second hinge ring (401) is fixedly connected to the first hinge ring (402). The hinge directions of the first hinge ring (402) and the second hinge ring (401) form an angle. The rear end of the beam (1) is provided with a beam end cap (8), and a rotating connection hole (801) is formed on the beam end cap (8). The rear hook structure (5) includes a rotary shaft and a movable hinge seat. The rotary shaft is rotatably engaged with the rotating connection hole (801), and the movable hinge seat is connected and fixed on the rotary shaft.

9. A water diversion channel drag chain maintenance system according to claim 5, characterized in that: The horizontal support assembly (16) is provided with a downward-extending working ladder (19), the lower end of which extends to the working basket (18) to establish a personnel passage.

10. A maintenance method for a water diversion channel drag chain maintenance system according to any one of claims 1-9, characterized in that... Includes the following steps: S1. Place the chain truck system (12) in the water diversion channel (13) and make it travel along the channel wall to the set maintenance position; S2. Deploy the diagonal brace assembly (15) hinged to the chain carrier system (12) so that its end abuts against the inner wall surface of the water channel (13) opposite to the chain carrier system (12); S3. Unfold the support fixing component connected to the diagonal brace assembly (15) and hang it below the diagonal brace assembly (15); S4. The working basket (18) is driven to rotate horizontally by the rotating assembly (17), so that the working basket (18) moves along the inner wall of the water diversion channel (13) and performs maintenance work. S5. After the maintenance is completed, the support fixing component and the diagonal brace component (15) are retracted in sequence and attached to the chain trailer system (12). The chain trailer system (12) is then used to move the chain trailer to the next maintenance position or exit the water diversion channel (13).

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