A wind turbine unit lifting maintenance platform

Abstract

The utility model relates to the technical field of lifting maintenance platform, disclose a kind of wind generating set lifting maintenance platform, including lifting guide rail, the one side of lifting guide rail is fixedly connected with tower tube, the tower tube top is provided with blade, the tower tube bottom is fixedly connected with base, the base one side is fixedly connected with stairway, the base top is fixedly connected with tower bottom equipment, the lifting guide rail is slidably connected with lifting frame, the lifting frame bottom is fixedly connected with pivot one, the pivot one outer wall is rotatably connected with rotating shell, the rotating shell outer wall is fixedly connected with lifting platform, the lifting platform top is provided with dynamic protection. In the utility model, by setting spring clamping block installation guardrail, then through inclined plane sliding block dismounts guardrail, respectively adaptation different operation mode, improve the flexibility of lifting maintenance platform, solve the problem that fixed guardrail cannot carry large-scale instrument parts, and there is security risk without guardrail.

Description

Technical Field

[0001] This utility model relates to the field of lifting and maintenance platform technology, and in particular to a lifting and maintenance platform for wind turbine generator sets. Background Technology

[0002] In the daily operation of wind farms, components such as the towers, nacelles, and blades of wind turbine generators require regular inspection and maintenance. These components are mostly located at high altitudes, and traditional climbing methods are inefficient and unsafe. Wind turbine generator lifting and maintenance platforms, as specialized high-altitude work equipment, can stably lift and lower along the tower or pre-set tracks, carrying maintenance personnel, tools, and equipment to designated maintenance heights. They provide a safe and convenient working space for maintenance operations and are equipped with safety protection functions such as load limits and emergency braking, significantly reducing the risks of working at heights and ensuring efficient maintenance. They are a crucial piece of equipment for the long-term stable operation of wind turbine generators.

[0003] Currently, the equipment related to the function of wind turbine generator lifting and maintenance platforms mainly includes fixed tower lifting platforms and mobile nacelle maintenance platforms. The fixed tower lifting platform consists of a metal support platform, a gear and rack transmission mechanism, a drive motor, guide rails, and a safety lock. Its working principle is that the drive motor drives the gears to rotate, and the gears mesh with the rack on the tower, causing the support platform to move up and down along the guide rails. The safety lock automatically locks the platform in case of power failure or abnormality to prevent falls. The mobile nacelle maintenance platform consists of a foldable metal frame, a hydraulic lifting mechanism, casters, and guardrails. During operation, the hydraulic mechanism drives the piston rod to extend and retract, raising and lowering the platform frame to adjust its height. The casters facilitate movement of the platform within the nacelle, and the guardrails surround the platform's edges to provide protection and prevent personnel or tools from falling.

[0004] In the practical application of existing wind turbine generator lifting and maintenance platforms, the guardrails at the platform edges are mostly fixed welded or bolted structures. When large machinery and components need to be moved, the fixed guardrails create spatial obstacles, preventing components from directly entering or exiting from the side or top of the platform. The guardrails must be disassembled before they can be moved, a process that consumes a significant amount of time and severely impacts maintenance efficiency. If guardrails are not installed to save time, maintenance personnel are prone to falling due to accidental collisions or loss of balance during lifting and operation. Tools and components may also fall from the platform, causing equipment damage and posing a life-threatening risk to personnel on the ground. Furthermore, while some platforms use detachable guardrails, the disassembly process is cumbersome, and repeated disassembly can loosen the connection structure, also posing a safety hazard. These platforms cannot simultaneously meet the needs of moving large components and ensuring safety during high-altitude operations. Therefore, a wind turbine generator lifting and maintenance platform is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a wind turbine generator lifting and maintenance platform, which aims to improve the problems of existing technology where fixed guardrails cannot be used to move large machinery and components, and the lack of guardrails poses safety hazards.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A wind turbine generator lifting and maintenance platform includes a lifting guide rail, a tower fixedly connected to one side of the lifting guide rail, blades provided at the top of the tower, a base fixedly connected to the bottom of the tower, a staircase fixedly connected to one side of the base, tower base equipment fixedly connected to the top of the base, a lifting frame slidably connected to the lifting guide rail, a rotating shaft fixedly connected to the bottom of the lifting frame, a rotating shell rotatably connected to the outer wall of the rotating shaft, a lifting platform fixedly connected to the outer wall of the rotating shell, a dynamic protection component provided at the top of the lifting platform, and locking components provided on both sides of the lifting platform. The dynamic protection component includes a guardrail, which is slidably connected to the inner wall of the lifting platform, and a quick-release component is provided at the bottom of the guardrail.

[0007] As a further description of the above technical solution: The quick-release assembly includes a connecting rod, the top of which is fixedly connected to the bottom of the guardrail, and the other end of which is fixedly connected to a flat-topped cone. A second spring is provided inside the lifting platform, one end of which is fixedly connected to the inner wall of the lifting platform, and the other end of which is fixedly connected to one side of the inclined block. The top of the flat-topped cone engages with the inclined block.

[0008] As a further description of the above technical solution: The bottom of the flat-top cone is provided with a sliding plate, which is slidably connected to the inner wall of the lifting platform. A spring is provided at the bottom of the sliding plate, with one end of the spring fixedly connected to the bottom of the sliding plate and the other end of the spring fixedly connected to the inner wall of the lifting platform.

[0009] As a further description of the above technical solution: The outer wall of the connecting rod is slidably connected to an inclined slider, which is attached to one side of the inclined block.

[0010] As a further description of the above technical solution: The engaging assembly includes a locking strip that is slidably connected to the inner wall of the lifting platform. The locking strip engages with a groove on one side of the lifting frame. A plurality of limiting feet are fixedly connected to the bottom of the lifting frame, and the inner wall of the limiting feet is in contact with the bottom of the lifting platform.

[0011] As a further description of the above technical solution: The inner wall of the card bar is rotatably connected to a second rotating shaft, the outer wall of the second rotating shaft is rotatably connected to a rotating plate, the inner wall of the rotating plate is rotatably connected to a third rotating shaft, and the two ends of the third rotating shaft are fixedly connected to the inner wall of the lifting platform.

[0012] As a further description of the above technical solution: A spring is provided on one side of the rotating plate. One end of the spring is fixedly connected to one side of the rotating plate, and the other end of the spring is fixedly connected to the inner wall of the lifting platform.

[0013] As a further description of the above technical solution: A button is provided on one side of the rotating plate. The button is slidably connected to one side of the lifting platform, and a limit plate is fixedly connected to the outer wall of the button.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the guardrail is installed by setting spring clips and then disassembled by inclined sliders, which can be adapted to different working modes, improve the flexibility of the lifting and maintenance platform, and solve the problems that fixed guardrails cannot be used to move large machinery parts and that there are safety hazards without guardrails.

[0015] 2. In this utility model, the platform is retracted by a rotating shaft and then fixed by a locking block, which saves the space occupied by the lifting and maintenance platform and solves the problem of the small space inside the tower and the space occupied by the lifting platform near the equipment at the bottom of the tower when it is idle. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a wind turbine generator lifting and maintenance platform proposed in this utility model; Figure 2 This is a schematic diagram of the lifting guide rail of a wind turbine generator lifting and maintenance platform proposed in this utility model; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the inclined slider of a wind turbine generator lifting and maintenance platform proposed in this utility model. Figure 5 This is a schematic diagram of the structure of the rotating shaft of a wind turbine generator lifting and maintenance platform proposed in this utility model; Figure 6 This is a cross-sectional structural diagram of the rotating plate of a wind turbine generator lifting and maintenance platform proposed in this utility model.

[0017] Legend: 1. Tower; 2. Blade; 3. Staircase; 4. Tower base equipment; 5. Lifting guide rail; 6. Base; 7. Limiting foot; 8. Guardrail; 9. Lifting frame; 10. Lifting platform; 11. Rotating shell; 12. Button; 13. Connecting rod; 14. Inclined slider; 15. Flat top cone; 16. Sliding plate; 17. Spring 1; 18. Inclined locking block; 19. Spring 2; 20. Rotating shaft 1; 21. Locking strip; 22. Rotating plate; 23. Spring 3; 24. Limiting plate; 25. Rotating shaft 2; 26. Rotating shaft 3. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-4 This utility model provides an embodiment of a wind turbine generator lifting and maintenance platform, including a lifting guide rail 5 for guiding the vertical movement trajectory of a lifting frame 9. A tower 1 is fixedly connected to one side of the lifting guide rail 5, supporting the main structure of the wind turbine generator. Blades 2 are provided at the top of the tower 1, which are part of existing wind turbine technology and will not be described in detail here. A base 6 is fixedly connected to the bottom of the tower 1 for fixing the tower 1 and providing a stable foundation. A staircase 3 is fixedly connected to one side of the base 6 for personnel to access the tower 1 daily. The top of the base 6 is fixed... A tower base device 4 is connected to the tower base device 4, which is used to house the controller and converter equipment. A lifting guide rail 5 is slidably connected to a lifting frame 9, which is used to support the lifting platform 10 and move along the guide rail. A rotating shaft 20 is fixedly connected to the bottom of the lifting frame 9. A rotating shell 11 is rotatably connected to the outer wall of the rotating shaft 20. The rotating shaft 20 is used to cooperate with the rotating shell 11 to connect the lifting frame 9 and the lifting platform 10 to achieve the purpose of rotation. The lifting platform 10 is fixedly connected to the outer wall of the rotating shell 11. The lifting platform 10 is used to carry maintenance personnel and tools. A dynamic protection component is provided on the top of the lifting platform 10. A locking component is provided on both sides of the lifting platform 10. The dynamic safety assembly includes a guardrail 8, which prevents personnel from falling from the lifting platform 10. The guardrail 8 is slidably connected to the inner wall of the lifting platform 10. A quick-release assembly is provided at the bottom of the guardrail 8, including a connecting rod 13. The connecting rod 13 connects the guardrail 8 to the locking mechanism. The top of the connecting rod 13 is fixedly connected to the bottom of the guardrail 8, and the other end of the connecting rod 13 is fixedly connected to a flat-topped cone 15. The flat-topped cone 15 cooperates with the inclined plate locking block 18 to achieve quick locking. A second spring 19 is provided inside the lifting platform 10. The second spring 19 provides the locking force for the inclined plate locking block 18. One end of the second spring 19 is fixedly connected to the inner wall of the lifting platform 10, and the other end of the second spring 19 is fixedly connected to one side of the inclined plate locking block 18. The top of the top cone 15 engages with the inclined plate block 18, which is used to hold the flat top cone 15 in place and fix the position of the guardrail 8. A sliding plate 16 is provided at the bottom of the flat top cone 15. The sliding plate 16 is used to transmit the elastic force of the spring 17. The sliding plate 16 is slidably connected to the inner wall of the lifting platform 10. A spring 17 is provided at the bottom of the sliding plate 16. The spring 17 is used to engage the guardrail 8 with the inclined plate block 18. One end of the spring 17 is fixedly connected to the bottom of the sliding plate 16, and the other end of the spring 17 is fixedly connected to the inner wall of the lifting platform 10. An inclined slider 14 is slidably connected to the outer wall of the connecting rod 13. The inclined slider 14 is used to assist in releasing the engagement of the inclined plate block 18. The inclined slider 14 is attached to one side of the inclined plate block 18.

[0020] Reference Figures 1-3 , Figure 5 and Figure 6 The engaging assembly includes a locking strip 21, which locks the relative position of the lifting platform 10 and the lifting frame 9. The locking strip 21 is slidably connected to the inner wall of the lifting platform 10 and engages with a groove on one side of the lifting frame 9. Multiple limiting feet 7 are fixedly connected to the bottom of the lifting frame 9, limiting the rotation range of the lifting platform 10. The inner wall of the limiting feet 7 is in contact with the bottom of the lifting platform 10. A rotating shaft 25 is rotatably connected to the inner wall of the locking strip 21, connecting the rotating plate 22 to the locking strip 21. A rotating plate 22 is rotatably connected to the outer wall of the rotating shaft 25, converting the operation of the button 12 into movement of the locking strip 21. The inner wall of the rotating plate 22 rotates... A rotating shaft 26 is connected to the rotating plate 22. The rotating shaft 26 is used to fix the rotation center of the rotating plate 22. Both ends of the rotating shaft 26 are fixedly connected to the inner wall of the lifting platform 10. A spring 23 is provided on one side of the rotating plate 22. The spring 23 is used to provide the return spring force of the rotating plate 22 to maintain the locked state. One end of the spring 23 is fixedly connected to one side of the rotating plate 22, and the other end of the spring 23 is fixedly connected to the inner wall of the lifting platform 10. A button 12 is provided on one side of the rotating plate 22. The button 12 is used to manually operate the unlocking of the control bar 21. The button 12 is slidably connected to one side of the lifting platform 10. A limit plate 24 is fixedly connected to the outer wall of the button 12. The limit plate 24 is used to limit the movement range of the button 12.

[0021] Working principle: When providing dynamic protection around the lifting platform 10, first align the bottom of the guardrail 8 with the mounting hole at the top of the lifting platform 10 and insert it. The spring 17 inside pushes the sliding plate 16, pushing the flat-top cone 15 upward and engaging with the inclined block 18. When removing it, first press down on the guardrail 8. At this time, the inclined slider 14 slides downward, compressing the spring 19 and moving it below the inclined block 18. Then, quickly lift the guardrail 8. Under the action of the inclined slider 14, the inclined block 18 passes over the flat-top cone 15, releasing the engagement between the lifting platform 10 and the guardrail 8. This adapts to different operating modes, improves the flexibility of the lifting maintenance platform, and solves the problems of fixed guardrail 8 being unable to transport large machinery parts and the safety hazards existing without guardrail 8. When storing blade 2, first remove guardrail 8, and lift platform 10 by rotating along shaft 20 with rotating shell 11 fixed. Under the reaction force of spring 23, rotating plate 22 rotates around shaft 26 and the locking strip 21 at the other end engages in the groove of lifting frame 9 under the rotation of shaft 25, thus fixing blade 2. When unlocking, press shaft 25 to unlock locking strip 21 and lifting frame 9. Then lower lifting platform 10. Limit foot 7 keeps lifting platform 10 in a horizontal position, saving space occupied by lifting maintenance platform and solving the problem of small space inside tower 1 and space occupied near equipment 4 at the bottom of tower when lifting platform is idle.

Claims

1. A lifting and maintenance platform for a wind turbine generator set, comprising a lifting guide rail (5), characterized in that: A tower (1) is fixedly connected to one side of the lifting guide rail (5). A blade (2) is provided on the top of the tower (1). A base (6) is fixedly connected to the bottom of the tower (1). A staircase (3) is fixedly connected to one side of the base (6). A tower base device (4) is fixedly connected to the top of the base (6). A lifting frame (9) is slidably connected to the lifting guide rail (5). A rotating shaft (20) is fixedly connected to the bottom of the lifting frame (9). A rotating shell (11) is rotatably connected to the outer wall of the rotating shaft (20). A lifting platform (10) is fixedly connected to the outer wall of the rotating shell (11). A dynamic protection component is provided on the top of the lifting platform (10). Engaging components are provided on both sides of the lifting platform (10). The dynamic protection component includes a guardrail (8), which is slidably connected to the inner wall of the lifting platform (10), and a quick-release component is provided at the bottom of the guardrail (8).

2. The wind turbine generator lifting and maintenance platform according to claim 1, characterized in that: The quick-release assembly includes a connecting rod (13), the top of which is fixedly connected to the bottom of the guardrail (8), and the other end of which is fixedly connected to a flat-top cone (15). A second spring (19) is provided inside the lifting platform (10), one end of which is fixedly connected to the inner wall of the lifting platform (10), and the other end of which is fixedly connected to one side of the inclined block (18). The top of the flat-top cone (15) engages with the inclined block (18).

3. The wind turbine generator lifting and maintenance platform according to claim 2, characterized in that: The bottom of the flat-top cone (15) is provided with a sliding plate (16), which is slidably connected to the inner wall of the lifting platform (10). A spring (17) is provided at the bottom of the sliding plate (16), with one end of the spring (17) fixedly connected to the bottom of the sliding plate (16) and the other end of the spring (17) fixedly connected to the inner wall of the lifting platform (10).

4. A wind turbine generator lifting and maintenance platform according to claim 3, characterized in that: The outer wall of the connecting rod (13) is slidably connected to a sloping slider (14), and the sloping slider (14) is attached to one side of the sloping block (18).

5. A wind turbine generator lifting and maintenance platform according to claim 1, characterized in that: The engaging assembly includes a locking strip (21), which is slidably connected to the inner wall of the lifting platform (10). The locking strip (21) engages with a groove on one side of the lifting frame (9). The bottom of the lifting frame (9) is fixedly connected with multiple limiting feet (7), and the inner wall of the limiting feet (7) is in contact with the bottom of the lifting platform (10).

6. A wind turbine generator lifting and maintenance platform according to claim 5, characterized in that: The inner wall of the card strip (21) is rotatably connected to a second rotating shaft (25), the outer wall of the second rotating shaft (25) is rotatably connected to a rotating plate (22), the inner wall of the rotating plate (22) is rotatably connected to a third rotating shaft (26), and the two ends of the third rotating shaft (26) are fixedly connected to the inner wall of the lifting platform (10).

7. A wind turbine generator lifting and maintenance platform according to claim 6, characterized in that: A spring three (23) is provided on one side of the rotating plate (22). One end of the spring three (23) is fixedly connected to one side of the rotating plate (22), and the other end of the spring three (23) is fixedly connected to the inner wall of the lifting platform (10).

8. A wind turbine generator lifting and maintenance platform according to claim 7, characterized in that: A button (12) is provided on one side of the rotating plate (22). The button (12) is slidably connected to one side of the lifting platform (10). A limit plate (24) is fixedly connected to the outer wall of the button (12).

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