Fan overhauling device for wind power plant

Abstract

The invention relates to the technical field of fan maintenance of a wind power plant, in particular to a fan maintenance device for the wind power plant. The device comprises a lifting frame, an overhaul stand is arranged on one side of the lifting frame in a sliding mode, a rope is arranged on the lifting frame, a locking mechanism, a driving mechanism and a locking mechanism are arranged in the lifting frame, the locking mechanism is used for fixing the overhaul stand, and the driving mechanism is arranged on the lifting frame and used for driving the locking mechanism to move and limiting movement of the overhaul stand. An auxiliary mechanism is further arranged in the lifting frame. A maintainer manually rotates a screw rod to be matched with a positioning block, a mounting plate and the like to drive a limiting column to be clamped into a limiting hole of a hoisting frame, so that the overhaul stand and the hoisting frame are fixed, the situation that under the condition of large wind power, a rope drives the overhaul stand to shake is effectively avoided, collision between the overhaul stand and a fan is prevented, and the service life of the overhaul stand is prolonged. The maintenance environment of maintenance personnel is more stable and safer, and meanwhile, the maintenance table is fixed on the hoisting frame.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine maintenance in a wind farm, and in particular to a wind turbine maintenance device for a wind farm. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. A wind turbine is generally composed of components such as a wind wheel, a generator (including a device), a stabiliser (tail wing), a tower, a speed limiting safety mechanism and an energy storage device. Most wind turbines are installed in remote inland areas or in the ocean. These environments often have strong winds, which provide energy for the wind turbine to generate electricity. Regular maintenance of wind turbines is essential. In addition to inspecting the generator set inside the wind turbine, maintenance personnel also need to use slings to inspect and repair the blades and column bases outside the wind turbine.

[0003] At present, when repairing wind turbines in wind farms, maintenance personnel are usually lifted to a height for maintenance work with the help of hangers and slings. However, due to the variability of the environment, if there is a sudden strong wind, the rope will swing. On the one hand, the swinging of the rope will make it difficult for maintenance personnel to perform precise operations, thus affecting the progress of the maintenance. On the other hand, the swinging rope may cause a collision between the lifting device and the wind turbine, posing a safety hazard. At the same time, the sling will rub against the surrounding objects during the swinging process. Long-term friction will cause wear on the surface of the sling, reducing the strength and safety factor of the sling, thereby increasing the safety hazards during the maintenance process. In view of this, we propose a wind turbine maintenance device for wind farms. Summary of the invention

[0004] The object of the present invention is to provide a wind turbine maintenance device for a wind farm to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides a wind turbine maintenance device for a wind farm, comprising a lifting frame, a maintenance platform is slidably provided on one side of the lifting frame, a rope is provided on the lifting frame, a locking mechanism and a driving mechanism are provided inside the lifting frame, the locking mechanism is used to fix the maintenance platform, the lifting frame is provided with a driving mechanism for driving the locking mechanism to move and limit the movement of the maintenance platform, and an auxiliary mechanism is also provided inside the lifting frame;

[0006] When the inspection platform rises to a certain height, the driving mechanism drives the locking mechanism to fix the inspection platform and the lifting frame. At the same time, the locking mechanism drives the auxiliary mechanism to limit the rope.

[0007] As a further improvement of the present technical solution, the locking mechanism includes at least a mounting plate slidably connected to the inside of the lifting frame, the mounting plate is fixedly connected to a limiting column on the side away from the maintenance platform, a limiting hole is provided on the side of the lifting frame close to the limiting column, and the circular diameter size of the limiting column is matched with the circular diameter size of the limiting hole.

[0008] As a further improvement of the present technical solution, two groups of mounting plates are provided, and are symmetrically arranged on both sides of the lifting frame compared to the center line of the lifting frame. Multiple groups of limiting columns and limiting holes are provided, and multiple limiting columns are evenly arranged on the two mounting plates.

[0009] As a further improvement of the present technical solution, the driving mechanism comprises at least a moving block slidably connected to the lifting frame, and the moving block is fixedly connected to the maintenance platform, and two screws are threadedly connected to the moving block, and one side of the screw passes through the moving block.

[0010] As a further improvement of the technical solution, a positioning groove is provided on one side of the two mounting plates close to the screw rod, a positioning block is slidably connected in the positioning groove, and the side of the positioning block away from the mounting plate is rotationally connected to the side of the screw rod located inside the lifting frame.

[0011] As a further improvement of the technical solution, a receiving roller is fixedly connected to the lifting frame, the rope is located on the receiving roller, and the rope is fixedly connected to the top of the maintenance platform.

[0012] As a further improvement of the technical solution, the auxiliary mechanism includes at least two baffles slidably connected to the outer wall of the receiving roller, and the two baffles are symmetrically arranged.

[0013] As a further improvement of the technical solution, two protrusions are slidably connected inside the lifting frame, and the two protrusions are respectively located on both sides of the two mounting plates, the tops of the two protrusions are fixedly connected with connecting rods, and the sides of the two connecting rods away from the protrusions are respectively fixedly connected to one side of the adjacent baffle.

[0014] As a further improvement of the technical solution, a sliding groove is provided on the inner wall of the lifting frame, and a sliding block is slidably connected in the sliding groove, and the sliding block is fixedly connected to the mounting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the wind turbine maintenance device used in the wind farm, the maintenance personnel manually rotate the screw rod, cooperate with the positioning block and the mounting plate, etc., to drive the limit column to be clamped into the limit hole of the lifting frame, so as to fix the maintenance platform and the lifting frame, effectively avoiding the maintenance platform from shaking due to the rope in the case of strong wind, preventing the maintenance platform from colliding with the wind turbine, making the maintenance environment of the maintenance personnel more stable and safe. At the same time, the maintenance platform is fixed on the lifting frame, which can also effectively avoid the risk of the maintenance platform falling when the rope fails;

[0017] In addition, when the mounting plate moves, the protrusion is squeezed to drive the connecting rod to move, thereby driving the baffle to move and fix the rope to avoid friction between the rope and the lifting frame when the wind is strong, thereby extending the service life of the rope.

[0018] 2. In the wind turbine maintenance device used in the wind farm, when the maintenance platform is raised or lowered, the moving block is driven to move on the lifting frame. The moving block can provide stable guidance for the lifting of the maintenance platform, and at the same time, it can also effectively prevent the maintenance platform from shaking due to the swing of the rope.

[0019] 3. In the wind turbine maintenance device used in the wind farm, when the mounting plate moves to squeeze the protrusion, the baffle can be driven to move to fix the rope, thereby effectively avoiding the wear of the rope caused by swinging in bad weather and ensuring the integrity and safety of the rope;

[0020] When the mounting plate does not squeeze the protrusion, the baffle can limit the rope, effectively preventing the rope from slipping off from the predetermined position of the receiving roller during use, thereby causing an accidental collision of the maintenance ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall front-view stereoscopic structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0023] Figure 3 is a cross-sectional schematic diagram of the mounting plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the overall rear-view stereoscopic structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the assembly structure of the locking mechanism and the driving mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the driving mechanism structure of the present invention;

[0028] Figure 8 It is a plane view of the limiting state of the auxiliary mechanism of the present invention;

[0029] Fig. 9 It is a plan view of the auxiliary mechanism of the present invention in a non-limiting state.

[0030] The meaning of each number in the figure is:

[0031] 100, lifting frame; 110, maintenance platform; 120, rope; 130, receiving roller;

[0032] 200, locking mechanism; 210, mounting plate; 211, limiting column; 212, sliding block;

[0033] 300, driving mechanism; 310, moving block; 311, screw rod; 312, positioning block;

[0034] 400, auxiliary mechanism; 410, baffle; 411, bump; 412, connecting rod. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 9 As shown, this embodiment provides a wind turbine maintenance device for a wind farm, including a lifting frame 100, a maintenance platform 110 is slidably provided on one side of the lifting frame 100, a rope 120 is provided on the lifting frame 100, and the maintenance platform 110 can be driven to rise and fall by moving the rope 120, a locking mechanism 200 for fixing the maintenance platform 110 is provided inside the lifting frame 100, a driving mechanism 300 for driving the locking mechanism 200 to move and limiting the movement of the maintenance platform 110 is provided on the lifting frame 100, and an auxiliary mechanism 400 is also provided inside the lifting frame 100;

[0037] When the maintenance platform 110 rises to a certain height, the driving mechanism 300 drives the locking mechanism 200 to fix the maintenance platform 110 and the lifting frame 100. At the same time, the locking mechanism 200 drives the auxiliary mechanism 400 to limit the rope 120, so that during maintenance, the maintenance platform 110 and the lifting frame 100 are fixed, and the rope 120 is also limited and fixed to prevent the maintenance platform 110 from accidentally moving or shaking under strong winds or other external forces, thereby greatly reducing the risk of the maintenance platform 110 falling from a height. In addition, limiting the rope 120 can prevent the rope 120 from slipping or excessive swinging, and prevent the maintenance platform 110 from losing support and falling due to problems with the rope 120.

[0038] The present invention takes into account that when the wind turbines of the wind farm are currently being repaired, due to the variability of the environment, if there is a sudden strong wind, the slings will swing, and the swing of the slings will easily make it difficult for the maintenance personnel to perform accurate operations, thereby affecting the progress of the maintenance; therefore, a driving mechanism 300 is provided, and the driving mechanism 300 is cooperated with during the lifting process of the maintenance platform 110, so that the maintenance platform 110 moves in contact with the outer wall of the lifting frame 100, thereby providing a stable guide for the lifting of the maintenance platform 110, and effectively preventing the maintenance platform 110 from shaking due to the swing of the rope 120;

[0039] It is also taken into consideration that, under the influence of strong winds, the swinging sling may cause a collision between the lifting device and the wind turbine, posing a safety hazard; therefore, a locking mechanism 200 and a driving mechanism 300 are provided. When the maintenance platform 110 rises to the position requiring maintenance, the driving mechanism 300 is manually rotated so that the driving mechanism 300 drives the locking mechanism 200 to be connected to the lifting frame 100. Since the maintenance platform 110, the locking mechanism 200 and the driving mechanism 300 are interconnected, when the locking mechanism 200 is connected to the lifting frame 100, the maintenance platform 110 is also fixed on the lifting frame 100. This can effectively prevent the rope 120 from driving the maintenance platform 110 to shake in the case of strong winds, prevent the maintenance platform 110 from colliding with the wind turbine, and make the maintenance environment more stable and safe for the maintenance personnel. At the same time, the maintenance platform 110 is fixed on the lifting frame 100, which can also effectively avoid the risk of the maintenance platform 110 stalling and falling when the rope 120 fails.

[0040] Furthermore, the sling will generate friction with surrounding objects during the swinging process. Long-term friction will cause wear on the surface of the sling, reduce the strength and safety factor of the sling, and increase the safety hazard during the maintenance process. Therefore, an auxiliary mechanism 400 is set. When the driving mechanism 300 drives the locking mechanism 200 to engage with the lifting frame 100, the locking mechanism 200 drives the auxiliary mechanism 400 to move, so that the auxiliary mechanism 400 can limit and fix the rope 120, thereby avoiding frequent friction between the rope 120 and the surrounding objects during swinging in windy weather, thereby extending the service life of the rope 120.

[0041] When the maintenance platform 110 rises to a certain height, the maintenance platform 110 can be additionally locked, such as Figure 3 and Figure 6 As shown, the specific structure of the locking mechanism 200 is further disclosed, and the locking mechanism 200 at least includes a mounting plate 210 slidably connected to the inside of the lifting frame 100, and the mounting plate 210 is fixedly connected to a limiting column 211 on a side away from the maintenance platform 110, and a limiting hole is provided on the side of the lifting frame 100 close to the limiting column 211, and the circular diameter size of the limiting column 211 is adapted to the circular diameter size of the limiting hole. After the maintenance platform 110 rises to a certain height, the driving mechanism 300 is cooperated to squeeze the mounting plate 210, so as to drive the limiting column 211 to move and be clamped into the limiting hole on the lifting frame 100, and the locking mechanism 200 is cooperated to clamp and fix the maintenance platform 110 and the lifting frame 100 to prevent the rope 120 from driving the maintenance platform 110 to shake in the case of strong wind. At the same time, it can also effectively avoid the risk of the maintenance platform 110 stalling and falling when the roller or rope 120 fails.

[0042] In order to improve the stability of the fixing between the limiting column 211 and the lifting frame 100, as Figure 4 and Figure 5 As shown, two groups of mounting plates 210 are provided, and are symmetrically arranged on both sides of the lifting frame 100 compared to the center line of the lifting frame 100. Multiple groups of limiting columns 211 and limiting holes are provided, and multiple limiting columns 211 are evenly arranged on the two mounting plates 210. Multiple groups of limiting columns 211 and limiting holes are provided. When the maintenance platform 110 is subjected to forces, multiple limiting columns 211 can jointly resist these forces. At the same time, multiple limiting columns 211 are evenly arranged on the two mounting plates 210. Under the action of strong winds, if there is only a single limiting point, it will be subjected to excessive pressure, which may easily cause the limiting column 211 to be deformed or damaged. The evenly distributed limiting columns 211 can disperse the force to multiple positions, thereby reducing the force on a single limiting point.

[0043] In order to drive the mounting plate 210 to move, as Figure 3 and Figure 6-Figure 9As shown, the specific structure of the driving mechanism 300 is further disclosed. The driving mechanism 300 at least includes a moving block 310 slidably connected to the lifting frame 100, and the moving block 310 is fixedly connected to the maintenance platform 110. When the maintenance platform 110 is raised or lowered, the maintenance platform 110 drives the moving block 310 to slide on the lifting frame 100. Two screw rods 311 are threadedly connected to the moving block 310, and one side of the screw rod 311 passes through the moving block 310. The screw rod 311 is manually rotated to move the moving block 310. Figure 8 As shown by arrow a, the screw rod 311 pushes the mounting plate 210 to move.

[0044] When the limiting column 211 is clamped on the lifting frame 100, the mounting plate 210 is fixed while the maintenance platform 110 is also fixed to prevent the maintenance platform 110 from swinging or sliding during the maintenance process. Figure 7-Figure 9 As shown, the two mounting plates 210 are provided with positioning grooves on one side close to the screw rod 311, and positioning blocks 312 are slidably connected in the positioning grooves. The positioning blocks 312 are rotatably connected to the side of the screw rod 311 located inside the lifting frame 100, away from the mounting plate 210. Figure 8 In the embodiment, as shown by arrow a, the screw rod 311 is manually rotated to push the positioning block 312, thereby pushing the mounting plate 210 to move.

[0045] Considering the need to drive the maintenance platform 110 to move up and down, Figure 2 and Figure 4 As shown, a receiving roller 130 is fixedly connected to the lifting frame 100, a rope 120 is located on the receiving roller 130, and the rope 120 is fixedly connected to the top of the maintenance platform 110. Starting the rope 120 can drive the maintenance platform 110 to move.

[0046] In order to avoid the rope 120 from swinging due to strong wind, which may cause the rope 120 to be worn, Figure 3-Figure 4 As shown, the specific structure of the auxiliary mechanism 400 is further disclosed. The auxiliary mechanism 400 includes at least two baffles 410 slidably connected to the outer wall of the receiving roller 130, and the two baffles 410 are symmetrically arranged. The rope 120 is located between the two baffles 410. The rope 120 can be limited by the two baffles 410, which effectively prevents the rope 120 from slipping off from the predetermined position of the receiving roller 130 during use.

[0047] When the limiting column 211 is clamped onto the lifting frame 100, the baffle 410 can be driven to limit the rope 120. Figure 3-Figure 4 as well as Figure 6 and Figure 8-Figure 9As shown, the lifting frame 100 is slidably connected to two protrusions 411, and the two protrusions 411 are respectively located on both sides of the two mounting plates 210, and the tops of the two protrusions 411 are fixedly connected to connecting rods 412, and the sides of the two connecting rods 412 away from the protrusions 411 are respectively fixedly connected to one side of the adjacent baffle 410. When the mounting plate 210 moves inside the lifting frame 100, Figure 8 As shown by arrow b, the mounting plate 210 squeezes the protrusion 411, driving the protrusion 411 to move toward one side of the rope 120. The movement of the protrusion 411 drives the connecting rod 412 to move, thereby driving the baffle 410 to move, thereby fixing the rope 120 to avoid friction between the rope 120 and the lifting frame 100 when the rope 120 shakes in a windy environment. By limiting the rope 120 with the baffle 410, such wear can be effectively avoided, thereby extending the service life of the rope 120.

[0048] In order to ensure the guiding performance of the mounting plate 210 when it moves inside the lifting frame 100, as shown in FIG. Figure 8 As shown, a slide groove is opened on the inner wall of the lifting frame 100, and a slider 212 is slidably connected in the slide groove, and the slider 212 is fixedly connected to the mounting plate 210. When the screw rod 311 pushes the positioning block 312 to move, the mounting plate 210 is driven to move. When the mounting plate 210 moves, the slider 212 is driven to slide in the slide groove. The sliding of the slider 212 in the slide groove provides a clear guide path for the movement of the mounting plate 210, ensuring that the mounting plate 210 always moves in a predetermined direction when moving.

[0049] Working principle: When the wind turbines of the wind farm need to be repaired, the maintenance personnel first stand inside the maintenance platform 110, and then start the roller and cooperate with the rope 120 on the roller to drive the maintenance platform 110 to rise. When the maintenance platform 110 moves, it drives the moving block 310 to move on the lifting frame 100. The moving block 310 moves on the lifting frame 100, which can provide stable guidance for the lifting and lowering of the maintenance platform 110. At the same time, it can also effectively prevent the maintenance platform 110 from shaking due to the swing of the rope 120.

[0050] When the inspection platform 110 rises to the inspection position, the winding roller is closed and the rope 120 does not drive the inspection platform 110 to continue moving. Then the maintenance personnel manually rotate the screw rod 311 to push the positioning block 312, thereby pushing the mounting plate 210 to move, and then driving the limiting column 211 to move, so that the plurality of limiting columns 211 are respectively clamped into the plurality of limiting holes of the lifting frame 100, so as to fix the moving block 310 and the lifting frame 100, so as to prevent the maintenance personnel from shaking the inspection platform 110 when the wind is strong during the inspection, and fix the inspection platform 110 and the lifting frame 100, so as to make the environment for the maintenance personnel to inspect more stable. At the same time, it can also effectively avoid the risk of the inspection platform 110 stalling and falling when the winding roller or rope 120 fails.

[0051] When the mounting plate 210 moves inside the lifting frame 100, the mounting plate 210 squeezes the protrusion 411, driving the protrusion 411 to move toward one side of the rope 120. The movement of the protrusion 411 drives the connecting rod 412 to move, thereby driving the baffle 410 to move, thereby fixing the rope 120 to avoid friction between the rope 120 and the lifting frame 100 due to shaking in a windy environment. The baffle 410 limits the rope 120, which can effectively avoid such wear and tear and extend the service life of the rope 120.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wind turbine maintenance device for a wind farm, comprising a lifting frame (100), a maintenance platform (110) being slidably provided on one side of the lifting frame (100), and a rope (120) being provided on the lifting frame (100), characterized in that: The lifting frame (100) is provided with a locking mechanism (200) and a driving mechanism (300) inside, wherein the locking mechanism (200) is used to fix the maintenance platform (110), and the lifting frame (100) is provided with a driving mechanism (300) used to drive the locking mechanism (200) to move and limit the movement of the maintenance platform (110), and an auxiliary mechanism (400) is also provided inside the lifting frame (100); When the inspection platform (110) rises to a certain height, the driving mechanism (300) drives the locking mechanism (200) to fix the inspection platform (110) and the lifting frame (100), and at the same time, the locking mechanism (200) drives the auxiliary mechanism (400) to limit the rope (120).

2. The wind turbine maintenance device for a wind farm according to claim 1, characterized in that: The locking mechanism (200) comprises at least a mounting plate (210) slidably connected to the inside of the lifting frame (100); a side of the mounting plate (210) away from the maintenance platform (110) is fixedly connected to a limiting column (211); a side of the lifting frame (100) close to the limiting column (211) is provided with a limiting hole, and the circular diameter of the limiting column (211) is matched with the circular diameter of the limiting hole.

3. The wind turbine maintenance device for a wind farm according to claim 2, characterized in that: The mounting plates (210) are provided in two groups, and are symmetrically arranged on both sides of the lifting frame (100) relative to the center line of the lifting frame (100); the limiting columns (211) and the limiting holes are provided in multiple groups, and the multiple limiting columns (211) are evenly arranged on the two mounting plates (210).

4. The wind turbine maintenance device for a wind farm according to claim 3 is characterized in that: The driving mechanism (300) comprises at least a moving block (310) slidably connected to the lifting frame (100), and the moving block (310) is fixedly connected to the maintenance platform (110), and two screw rods (311) are threadedly connected to the moving block (310), and one side of the screw rod (311) passes through the moving block (310).

5. The wind turbine maintenance device for a wind farm according to claim 4 is characterized in that: A positioning groove is provided on one side of the two mounting plates (210) close to the screw rod (311), and a positioning block (312) is slidably connected in the positioning groove, and a side of the positioning block (312) away from the mounting plate (210) is rotationally connected to a side of the screw rod (311) located inside the lifting frame (100).

6. The wind turbine maintenance device for a wind farm according to claim 1, characterized in that: A receiving roller (130) is fixedly connected to the lifting frame (100), the rope (120) is located on the receiving roller (130), and the rope (120) is fixedly connected to the top of the maintenance platform (110).

7. The wind turbine maintenance device for a wind farm according to claim 6, characterized in that: The auxiliary mechanism (400) comprises at least two baffles (410) slidably connected to the outer wall of the receiving roller (130), and the two baffles (410) are symmetrically arranged.

8. The wind turbine maintenance device for a wind farm according to claim 7, characterized in that: The lifting frame (100) is internally slidably connected with two protrusions (411), and the two protrusions (411) are respectively located on both sides of the two mounting plates (210), and the tops of the two protrusions (411) are fixedly connected with connecting rods (412), and the sides of the two connecting rods (412) away from the protrusions (411) are respectively fixedly connected to one side of the adjacent baffle (410).

9. The wind turbine maintenance device for a wind farm according to claim 2, characterized in that: The inner wall of the lifting frame (100) is provided with a sliding groove, and a sliding block (212) is slidably connected in the sliding groove, and the sliding block (212) is fixedly connected to the mounting plate (210).

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