A construction platform and construction method for repairing mixed towers of wind turbine generators

Abstract

This invention provides a construction platform and method for repairing mixed towers of wind turbine generators, relating to the technical field of external construction platforms for wind turbines. It includes several modular suspended platform components, which are arranged to form a ring-shaped construction platform. Adjacent modular suspended platform components are connected by a self-locking quick-release mechanism. During the suspension of the modular suspended platform components, the hoisting traction rope pulls the telescopic slider to overcome the elastic force of the traction spring, thereby pushing the positioning pin block to slide away from the traction spring, thus fixing the adjacent modular suspended platform components together. This invention utilizes the self-weight of the modular suspended platform components to achieve automatic engagement between the positioning pin block and the self-locking limiting groove during hoisting, and automatically disengages after the modular suspended platform components reach the ground. Furthermore, due to the self-weight of the modular suspended platform components and the personnel standing on them, the positioning pin block and the self-locking limiting groove cannot automatically disengage in the air, greatly ensuring the safety of aerial operations.

Description

Technical Field

[0001] This invention relates to the field of wind turbine external construction platform technology, specifically to a construction platform and construction method for repairing mixed towers of wind turbine generator sets. Background Technology

[0002] A prior art patent, CN216616804U, discloses a construction platform for reinforcing the upper structure of a wind turbine, relating to the field of wind turbines. It includes a connecting ring fitted onto a steel or concrete cylinder, with the inner wall of the connecting ring abutting against the outer wall of the steel or concrete cylinder. The connecting ring comprises multiple interlocking arc-shaped units; a construction scaffold is connected to the connecting ring. This device facilitates the erection of the construction platform, improves the efficiency of reinforcement construction, and reduces the waste of building materials.

[0003] However, the device still has some obvious defects in use: although it simplifies the disassembly and assembly of the split units to a certain extent, the assembly and disassembly process still uses the common bolt fastening connection method. This connection method still requires a lot of manual operation, and the bolts are prone to falling off during vibration, which increases the risk of working in the air. Summary of the Invention

[0004] The purpose of this invention is to provide a construction platform and method for repairing mixed towers of wind turbine generator sets, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A construction platform for repairing a mixed tower of a wind turbine generator set includes several split-type suspended basket components, which are arranged to form a ring-shaped construction platform. The ring-shaped construction platform is hoisted and installed on the outside of the mixed tower.

[0007] The split-type suspended platform assembly is formed by welding together an inner arc-shaped connecting rod, an outer arc-shaped connecting rod, several inner clamps, several outer protective frames, several bottom legs, a first side connecting frame, and a second side connecting frame. The inner arc-shaped connecting rod and the outer arc-shaped connecting rod are fixedly connected by several support rods. The first side connecting frame and the second side connecting frame are fixedly installed at both ends of the inner arc-shaped connecting rod and the outer arc-shaped connecting rod, respectively. Several inner clamps are fixedly installed on the inner arc-shaped connecting rod, and several outer protective frames are fixedly installed on the outer arc-shaped connecting rod. The inner clamps and the outer protective frames are both perpendicular to the support rods. The two ends of several bottom legs are fixedly connected to the inner arc-shaped connecting rod and the outer arc-shaped connecting rod, respectively.

[0008] Adjacent split-type suspended platform assemblies are connected by a self-locking quick-release mechanism. This mechanism includes a telescopic slider, a traction spring, a positioning pin, a hoisting traction rope, and a positioning block. The telescopic slider is slidably positioned within a groove in the first side connecting frame. The telescopic slider is connected to the first side connecting frame via the traction spring. The positioning pin is fixedly installed on the side of the telescopic slider away from the traction spring. The hoisting traction rope is also connected to the side of the telescopic slider away from the traction spring. During the suspension of the split-type suspended platform assembly, the hoisting traction rope pulls the telescopic slider, overcoming the elastic force of the traction spring, and performs work from... The positioning pin block is pushed to slide away from the traction spring. The positioning block is fixedly installed on the second side connecting frame. The positioning block has a self-locking limiting groove for the positioning pin block to be inserted. The traction spring pulls the positioning pin block away from the self-locking limiting groove without external force, thereby disengaging the self-locking quick-release mechanism. When the first side connecting frame and the second side connecting frame of the adjacent split basket assembly are engaged, the hoisting traction rope pushes the positioning pin block into the self-locking limiting groove of the positioning block during the suspension process, thereby engaging the self-locking quick-release mechanism and fixing the adjacent split basket assembly together.

[0009] Preferably, the inner clamps at both ends of the split-type suspended basket assembly are equipped with lifting traction ropes. The lifting traction rope on the side closer to the second side connecting frame is fixedly connected to the upper end of the inner clamp, and the lifting traction rope on the side closer to the first side connecting frame passes through the rope groove opened at the axis of the inner clamp and the first side connecting frame and is fixedly connected to the telescopic slider.

[0010] Preferably, a first magnetic positioning block and a second magnetic positioning block are also fixedly installed on the first side connecting frame and the second side connecting frame, so that the adjacent split-type suspended basket components can be attracted and positioned by the magnetic attraction of the first magnetic positioning block and the second magnetic positioning block.

[0011] Preferably, a telescopic sliding rod is also fixedly installed on the side of the telescopic slider near the traction spring, and the telescopic sliding rod is slidably disposed in the sliding rod hole opened on the side of the first side connecting frame.

[0012] Preferably, both the positioning pin block and the positioning block are provided with positioning pin holes, so as to prevent the positioning pin block from slipping out of the self-locking limiting groove by wedging the pin into the positioning pin block and the positioning pin hole of the positioning block.

[0013] Preferably, the outer protective frame of the split-type suspended basket assembly is also equipped with protective guard strips.

[0014] Preferably, the upper ends of several inner clamping frames of the split-type suspended basket assembly are further fitted with clamping rings, and clamping mesh plates are installed between several clamping rings.

[0015] Preferably, the support rod is also covered with a footboard plywood.

[0016] A method for repairing mixed-tower wind turbine generators, using the aforementioned wind turbine generator mixed-tower repair construction platform, includes the following steps:

[0017] Step 1: Transport several split-type suspended basket assemblies to the ground at the bottom of the hybrid tower. Adjacent split-type suspended basket assemblies are positioned by magnetic attraction of the first magnetic positioning block and the second magnetic positioning block, so that the first side connecting frame and the second side connecting frame of the adjacent split-type suspended basket assemblies cooperate with each other.

[0018] Step 2: Connect the hoisting traction ropes to the hoisting ropes on each of the split suspended platform components. During the hoisting process, the hoisting ropes pull the hoisting traction ropes. The hoisting traction ropes on the side closer to the first side connecting frame pull the telescopic slider to slide horizontally during the ascent, and push the positioning pin block into the self-locking limit groove opened in the positioning block, so that the self-locking quick-release mechanism cooperates, and finally the split suspended platform components are enclosed to form a hoop-type construction platform.

[0019] Step 3: Repair workers enter the hoop-type construction platform and carry out repair work on the outside of the mixed tower at different heights during the lifting and lowering process of the hoop-type construction platform;

[0020] Step 4: After the construction is completed, the hoist-type construction platform reaches the ground under the suspension of the hoisting mechanism. After several split-type suspended basket components reach the ground, under the traction of the traction spring, the positioning pin block automatically disengages from the self-locking limit groove opened on the positioning block, thereby releasing the limit connection of the self-locking quick-release mechanism.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention utilizes the self-weight of the split-type suspended platform assembly to achieve automatic engagement between the positioning pin and the self-locking limit groove during the hoisting process, and automatically disengages after the split-type suspended platform assembly reaches the ground. This design greatly improves the connection efficiency between the split-type suspended platform assemblies, and due to the self-weight of the split-type suspended platform assembly and the personnel standing on it, the positioning pin and the self-locking limit groove cannot automatically disengage in the air, greatly ensuring the safety of aerial operations. Attached Figure Description

[0023] Figure 1 This is a partial enlarged view of the split-type suspended basket assembly and self-locking quick-release mechanism of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure of the split-type suspended basket assembly of the present invention;

[0025] Figure 3This is a partial enlarged cross-sectional view of the split-type suspended basket assembly and self-locking quick-release mechanism of the present invention;

[0026] Figure 4 This is a schematic diagram of the positioning pin and positioning block in their mating state according to the present invention;

[0027] Figure 5 This is a top view schematic diagram of the overall structure of the ring-type construction platform of the present invention.

[0028] In the diagram: 1. Split-type suspended platform assembly; 2. Ring-type construction platform; 3. Hybrid tower; 4. Inner arc-shaped connecting rod; 5. Outer arc-shaped connecting rod; 6. Inner clamp frame; 7. Outer protective frame; 8. Bottom leg frame; 9. First side connecting frame; 10. Second side connecting frame; 11. Support rod; 12. Telescopic slider; 13. Traction spring; 14. Positioning pin block; 15. Lifting traction rope; 16. Positioning block; 17. Slide groove; 18. Self-locking limit groove; 19. Rope groove; 20. Telescopic slide rod; 21. Positioning pin hole; 22. Protective strip; 23. Clamp ring; 24. Clamp mesh plate; 25. Foot plywood; 26. First magnetic positioning block; 27. Second magnetic positioning block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-5 The present invention provides a technical solution:

[0031] Example 1:

[0032] A construction platform for repairing a mixed tower of a wind turbine generator set includes several separate suspended basket components 1, which are arranged to form a ring-shaped construction platform 2. The ring-shaped construction platform 2 is hoisted and installed on the outside of the mixed tower 3.

[0033] The split-type suspended basket assembly 1 is formed by welding together an inner arc-shaped connecting rod 4, an outer arc-shaped connecting rod 5, several inner clamping frames 6, several outer protective frames 7, several bottom legs 8, a first side connecting frame 9, and a second side connecting frame 10. The inner arc-shaped connecting rod 4 and the outer arc-shaped connecting rod 5 are fixedly connected by several support rods 11. The first side connecting frame 9 and the second side connecting frame 10 are fixedly installed at both ends of the inner arc-shaped connecting rod 4 and the outer arc-shaped connecting rod 5, respectively. Several inner clamping frames 6 are fixedly installed on the inner arc-shaped connecting rod 4, and several outer protective frames 7 are fixedly installed on the outer arc-shaped connecting rod 5. Both the inner clamping frames 6 and the outer protective frames 7 are set perpendicular to the support rods 11. The two ends of several bottom legs 8 are fixedly connected to the inner arc-shaped connecting rod 4 and the outer arc-shaped connecting rod 5, respectively.

[0034] Adjacent split-type suspended basket assemblies 1 are connected by a self-locking quick-release mechanism. This mechanism includes a telescopic slider 12, a traction spring 13, a positioning pin 14, a hoisting traction rope 15, and a positioning block 16. The telescopic slider 12 is slidably positioned within a groove 17 on the first side connecting frame 9. The telescopic slider 12 is connected to the first side connecting frame 9 via the traction spring 13. The positioning pin 14 is fixedly installed on the side of the telescopic slider 12 away from the traction spring 13. The hoisting traction rope 15 is also connected to the side of the telescopic slider 12 away from the traction spring 13. During the suspension of the split-type suspended basket assembly 1, the hoisting traction rope 15 pulls the telescopic slider 12 to overcome the elastic force of the traction spring 13, thereby... The positioning pin 14 is pushed to slide away from the traction spring 13. The positioning block 16 is fixedly installed on the second side connecting frame 10. The positioning block 16 has a self-locking limiting groove 18 for the positioning pin 14 to be inserted. The traction spring 13 pulls the positioning pin 14 away from the self-locking limiting groove 18 without external force, thereby disengaging the self-locking quick-release mechanism. When the first side connecting frame 9 and the second side connecting frame 10 of the adjacent split basket assembly 1 are engaged, the hoisting traction rope 15 pushes the positioning pin 14 into the self-locking limiting groove 18 of the positioning block 16 during the suspension process, thereby engaging the self-locking quick-release mechanism and fixing the adjacent split basket assembly 1.

[0035] In this embodiment, the split-type suspended platform assembly 1 is formed by welding together a conventionally arranged inner arc-shaped connecting rod 4, outer arc-shaped connecting rod 5, several inner clamping frames 6, several outer protective frames 7, several bottom legs 8, a first side connecting frame 9, and a second side connecting frame 10. To facilitate the rapid installation of the split-type suspended platform assemblies 1, adjacent split-type suspended platform assemblies 1 are connected by a self-locking quick-release mechanism. The self-locking quick-release mechanism includes a telescopic slider 12, a traction spring 13, a positioning pin block 14, a hoisting traction rope 15, and a positioning block 16. The telescopic slider 12, traction spring 13, and positioning pin block 14 are all installed on one side of the first side connecting frame 9, and the positioning block 16 is installed on one side of the second side connecting frame 10. During the assembly of adjacent split-type suspended platform assemblies 1, the first side connecting frame 9 and the second side connecting frame 10 of adjacent split-type suspended platform assemblies 1 cooperate, thereby bringing the components of the self-locking quick-release mechanism closer together. The traction spring 13, without external... Under the action of force, the traction positioning pin 14 moves away from the self-locking limiting groove 18, thereby disengaging the self-locking quick-release mechanism. At the same time, the telescopic slider 12 is also fixedly connected to the hoisting traction rope 15. When the hoisting traction rope 15 suspends the split-type suspended basket assembly 1 off the ground, the split-type suspended basket assembly 1, under its own weight, causes the telescopic slider 12 to slide under the traction of the hoisting traction rope 15, and pushes the positioning pin 14 into the self-locking limiting groove 18 opened in the positioning block 16, thereby engaging the self-locking quick-release mechanism and completing the rapid assembly of adjacent split-type suspended basket assemblies 1. The significance of this design is that this assembly process is mainly completed automatically by utilizing the self-weight of the split-type suspended basket assembly 1, greatly reducing the assembly burden on the workers. Moreover, after the self-locking quick-release mechanism is engaged, the connection is tighter under the self-weight of the split-type suspended basket assembly 1 and the construction workers on it, which can effectively prevent separation at high altitudes, thereby greatly ensuring the safety of the construction workers.

[0036] Example 2:

[0037] Lifting traction ropes 15 are provided on the inner clamps 6 at both ends of the split-type suspended basket assembly 1. The lifting traction rope 15 on the side closer to the second side connecting frame 10 is fixedly connected to the upper end of the inner clamp 6, and the lifting traction rope 15 on the side closer to the first side connecting frame 9 passes through the rope groove 19 opened at the axis of the inner clamp 6 and the first side connecting frame 9 and is fixedly connected to the telescopic slider 12.

[0038] In this embodiment, the installation position of the hoisting traction rope 15 is further optimized. By opening a rope groove 19 on the inner clamp frame 6 on one side of the first side connecting frame 9 and passing through the rope groove 19 opened in the first side connecting frame 9, the hoisting traction rope 15 is finally connected to the telescopic slider 12. The significance of this design is to optimize the arrangement of the hoisting traction rope 15 and ensure the stability of the connection between the hoisting traction rope 15 and the telescopic slider 12.

[0039] Example 3:

[0040] The first side connecting frame 9 and the second side connecting frame 10 are also fixedly installed with a first magnetic positioning block 26 and a second magnetic positioning block 27. The adjacent split-type hanging basket assembly 1 is attracted and positioned by the magnetic attraction of the first magnetic positioning block 26 and the second magnetic positioning block 27.

[0041] In this embodiment, by further setting the first magnetic positioning block 26 and the second magnetic positioning block 27, the split-type hanging basket assembly 1 can be quickly positioned by magnetic attraction in the early stage of assembly, thereby reducing the assembly difficulty for the assembly personnel.

[0042] Example 4:

[0043] A telescopic slide rod 20 is also fixedly installed on the side of the telescopic slider 12 near the traction spring 13. The telescopic slide rod 20 is slidably disposed in the slide rod hole opened on the side of the first side connecting frame 9.

[0044] In this embodiment, the extension and retraction stability of the telescopic slider 12 can be further ensured by the setting of the telescopic slider 20, thereby ensuring that the positioning pin 14 can accurately enter the self-locking limiting groove 18 opened in the positioning block 16.

[0045] Example 5:

[0046] Positioning pin 14 and positioning block 16 are both provided with positioning pin holes 21. By wedging the pin into the positioning pin holes 21 of positioning pin 14 and positioning block 16, the positioning pin 14 is prevented from slipping out of the self-locking limiting groove 18.

[0047] In this embodiment, in order to further ensure the stability of the connection between the positioning block 16 and the positioning pin block 14, corresponding positioning pin holes 21 are opened on both of them, and the pins are wedged in to effectively prevent them from slipping in the air, thereby further improving the safety of aerial operations.

[0048] Example 6:

[0049] Protective guardrails 22 are also installed on the outer protective frame 7 of the split-type suspended basket assembly 1.

[0050] The upper ends of several inner clamping frames 6 of the split-type suspended basket assembly 1 are also fitted with clamping rings 23, and clamping mesh plates 24 are installed between several clamping rings 23.

[0051] A foot pedal plywood 25 is also laid on the support rod 11.

[0052] In this embodiment, the safety of workers on the site is further ensured by the installation of protective barriers 22, clamp mesh panels 24, and footboard plywood 25, thereby preventing the risk of falling from height.

[0053] A method for repairing mixed-tower wind turbine generators, using the aforementioned wind turbine generator mixed-tower repair construction platform, includes the following steps:

[0054] Step 1: Transport several split-type suspended basket assemblies 1 to the ground at the bottom of the hybrid tower 3. Adjacent split-type suspended basket assemblies 1 are positioned by the magnetic attraction of the first magnetic positioning block 26 and the second magnetic positioning block 27, so that the first side connecting frame 9 and the second side connecting frame 10 of the adjacent split-type suspended basket assemblies 1 cooperate with each other.

[0055] Step 2: Connect the hoisting traction rope 15 connected to each of the split suspended platform components 1 to the hoisting rope. During the hoisting process of the hoisting mechanism, the hoisting traction rope 15 is pulled. Among them, the hoisting traction rope 15 near the first side connecting frame 9 pulls the telescopic slider 12 to slide horizontally during the ascent, and pushes the positioning pin block 14 into the self-locking limit groove 18 opened in the positioning block 16, so that the self-locking quick release mechanism is engaged, and finally the split suspended platform components 1 are enclosed to form a hoop-type construction platform 2.

[0056] Step 3: Repair workers enter the hoop-type construction platform 2 and carry out repair work on the outside of the mixed tower 3 at different heights during the lifting and lowering of the hoop-type construction platform 2;

[0057] Step 4: After the construction is completed, the hoist-type construction platform 2 reaches the ground under the suspension of the hoisting mechanism. After several split-type suspended basket components 1 reach the ground, under the traction of the traction spring 13, the positioning pin block 14 automatically disengages from the self-locking limit groove 18 opened on the positioning block 16, thereby releasing the limit connection of the self-locking quick-release mechanism.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine hybrid tower repair construction platform comprising a plurality of split-hoist-basket assemblies, characterized in that: A plurality of the split basket assemblies are enclosed to form a hoop type construction platform, and the hoop type construction platform is hoisted and arranged outside the hybrid tower drum; The split basket assembly is formed by welding an inner arc-shaped connecting rod, an outer arc-shaped connecting rod, a plurality of inner hoop holders, a plurality of outer protective frames, a plurality of bottom foot supports, a first side edge connecting frame and a second side edge connecting frame, the inner arc-shaped connecting rod and the outer arc-shaped connecting rod are fixedly connected through a plurality of supporting rods, the two ends of the inner arc-shaped connecting rod and the outer arc-shaped connecting rod are respectively fixedly installed with the first side edge connecting frame and the second side edge connecting frame, a plurality of the inner hoop holders are fixedly installed on the inner arc-shaped connecting rod, a plurality of the outer protective frames are fixedly installed on the outer arc-shaped connecting rod, the inner hoop holders and the outer protective frames are arranged perpendicularly to the supporting rods, and the two ends of a plurality of the bottom foot supports are respectively fixedly connected to the inner arc-shaped connecting rod and the outer arc-shaped connecting rod. The self-locking quick release mechanism includes a telescopic slider, a traction spring, a positioning pin block, a hoisting traction rope and a positioning block, the telescopic slider is translational slidingly arranged in a sliding groove of the first side edge connecting frame, the telescopic slider and the first side edge connecting frame are connected through the traction spring, the positioning pin block is fixedly installed on the side of the telescopic slider away from the traction spring, the side of the telescopic slider away from the traction spring is further connected with the hoisting traction rope, the hoisting traction rope pulls the telescopic slider to overcome the elastic force of the traction spring during the process of suspending the split basket assembly, so as to push the positioning pin block to translational slide away from the traction spring, the positioning block is fixedly installed on the second side edge connecting frame, the positioning block is provided with a self-locking limiting groove for embedding the positioning pin block, the traction spring moves the positioning pin block away from the self-locking limiting groove under the action of no external force, so that the self-locking quick release mechanism is disengaged, when the first side edge connecting frame and the second side edge connecting frame of the adjacent split basket assemblies are engaged, the hoisting traction rope pushes the positioning pin block into the self-locking limiting groove of the positioning block during the process of suspension, so that the self-locking quick release mechanism is engaged, thereby the adjacent split basket assemblies are fixedly connected.

2. A hybrid tower repair construction platform for a wind turbine generator system according to claim 1, characterized in that: The inner hoop holder at the two ends of the split basket assembly is provided with the hoisting traction rope, the hoisting traction rope near the second side edge connecting frame is fixedly connected to the upper end of the inner hoop holder, and the hoisting traction rope near the first side edge connecting frame passes through a rope groove of the inner hoop holder and the first side edge connecting frame and is fixedly connected to the telescopic slider.

3. The hybrid tower repair construction platform for a wind turbine generator system according to claim 1 or 2, characterized in that: The first side edge connecting frame and the second side edge connecting frame are further fixedly installed with a first magnetic positioning block and a second magnetic positioning block, and the adjacent split basket assemblies are positioned by magnetic adsorption of the first magnetic positioning block and the second magnetic positioning block.

4. The hybrid tower repair construction platform for a wind turbine generator system according to claim 3, characterized in that: The side of the telescopic slider away from the traction spring is further fixedly installed with a telescopic slide rod, and the telescopic slide rod is translational slidingly arranged in a slide rod hole of the first side edge connecting frame.

5. A hybrid tower repair construction platform for a wind turbine generator system according to claim 4, characterized in that: The positioning pin block and the positioning block are both provided with a positioning pin hole, and the positioning pin is wedged in the positioning pin hole of the positioning pin block and the positioning block, so as to prevent the positioning pin block from slipping out of the self-locking limiting groove.

6. A hybrid tower repair construction platform for a wind turbine generator system according to claim 5, characterized in that: The outer protective frame of the split basket assembly is further provided with a protective baffle.

7. A hybrid tower repair construction platform for a wind turbine generator system according to claim 6, characterized in that: The inner hoop frame upper end of the split type hanging basket assembly is further sleeved with a hoop ring, and a hoop net plate is installed between the hoop rings.

8. A hybrid tower repair construction platform for a wind turbine generator system according to claim 6, characterized in that: The support rod is further paved with a footboard plywood.

9. A wind turbine generator unit mixed tower repair construction method using the wind turbine generator unit mixed tower repair construction platform according to any one of claims 3 to 8, characterized by, The method comprises the following steps: Step one: carry several split type hanging basket assemblies to the ground at the bottom of the mixing tower drum, and position the adjacent split type hanging basket assemblies through the magnetic adsorption of the first magnetic positioning block and the second magnetic positioning block, so that the first side edge connecting frame and the second side edge connecting frame of the adjacent split type hanging basket assemblies cooperate with each other; Step two: connect the hoisting traction ropes on each split type hanging basket assembly with the hoisting ropes, and the hoisting ropes pull the hoisting traction ropes in the winching process of the hoisting mechanism, wherein the hoisting traction ropes near the first side edge connecting frame side pull the telescopic sliding blocks to slide in the upward process, and push the positioning pin blocks into the self-locking limiting grooves opened in the positioning blocks to cooperate with the self-locking quick release mechanism, so that the split type hanging basket assemblies are finally enclosed to form a hoop type construction platform; Step three: the repair construction personnel enter the hoop type construction platform and perform repair construction operation on the outer side of the mixing tower drum at different heights in the lifting process of the hoop type construction platform; Step four: after the construction is completed, the hoop type construction platform reaches the ground under the suspension of the hoisting mechanism, and after the several split type hanging basket assemblies reach the ground, the positioning pin blocks are automatically separated from the self-locking limiting grooves opened on the positioning blocks under the traction of the traction spring, so that the limiting connection of the self-locking quick release mechanism is released.

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