A blade hoisting device for a wind power plant

Abstract

The utility model discloses a kind of blade hoisting devices for wind power generation equipment, it is related to wind power generation technical field.The utility model includes U-shaped hoisting frame, U-shaped hoisting frame top is provided with lifting seat, multiple groups of pulley blocks are installed on the lifting seat, steel wire rope is sleeved on the pulley block, and further include: angle adjusting mechanism, the angle adjusting mechanism is arranged at the bottom of lifting seat, and the angle adjusting mechanism includes two hydraulic cylinders one arranged at the bottom of lifting seat.The utility model is set by setting angle adjusting mechanism, specifically is when blade is hoisted, by observing the offset position of blade, then control the two hydraulic cylinders one at the bottom of lifting seat start to retract or extend, will make U-shaped hoisting frame one end lift one end drop, to tilt blade and carry out deviation correction, to quickly adjust blade to more horizontal position, facilitate subsequent connection work, this mode does not need to hoist blade again, improve the installation efficiency of blade.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, and in particular relates to a blade hoisting device for wind power generation equipment. Background Technology

[0002] The blade lifting device for wind power generation equipment is a special lifting system designed specifically for large wind turbine generator sets (usually megawatt-level). Its core function is to accurately lift ultra-long composite blades (up to 80 meters or more in length) to the designated position on the hub and complete a reliable connection during installation, maintenance or replacement.

[0003] Traditional blade hoisting equipment typically involves installing fixing devices on a crane to clamp and secure the blade before hoisting it. However, because blades are usually quite long, the center of gravity of the blade may shift slightly during hoisting, causing the blade to tilt slightly. This makes it difficult to adjust the position and angle of the blade during subsequent installation, requiring the blade to be lowered, re-clamped, and hoisted again. This process consumes a lot of time and makes it difficult to quickly connect and install the blade. Utility Model Content

[0004] The purpose of this invention is to provide a blade hoisting device for wind power generation equipment. Specifically, after the blade is hoisted, the device observes the blade's offset position and then controls the two hydraulic cylinders at the bottom of the lifting platform to extend or retract. This causes one end of the U-shaped hoisting frame to tilt upwards while the other end tilts downwards, thus correcting the tilted blade and quickly adjusting it to a more level position for subsequent connection work. This method eliminates the need to re-hoist the blade, improving installation efficiency. It also solves the problem that blades are prone to slight tilting during hoisting due to gravity, making subsequent installation difficult and requiring the blade to be lowered, re-clamped, and then hoisted again, a process that consumes a lot of time.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a blade hoisting device for wind power generation equipment, comprising a U-shaped hoisting frame, a lifting seat disposed above the U-shaped hoisting frame, multiple sets of pulley blocks mounted on the lifting seat, and steel wire ropes sleeved on the pulley blocks, and further comprising: An angle adjustment mechanism is provided, located at the bottom of the lifting platform. The mechanism includes two hydraulic cylinders at the bottom of the lifting platform. Each hydraulic cylinder has a telescopic rod at both ends. Connecting blocks are fixedly connected to both ends of each hydraulic cylinder and each end of the telescopic rod. Hinges are rotatably connected to each connecting block. A clamping mechanism is provided on the inner side of the U-shaped lifting frame, and the clamping mechanism is used to clamp and fix the blade. The hydraulic cylinder is used to push the U-shaped hoisting frame to adjust its position, and the telescopic rod is used to increase the strength of the connection between the lifting seat and the U-shaped hoisting frame.

[0006] Furthermore, the top of the upper hinge block is fixedly connected to the bottom of the lifting seat, and the lower hinge block is fixedly connected to the top of the U-shaped hoisting frame. The telescopic rod is divided into an inner rod and an outer rod. The hydraulic cylinder is hinged to the hinge block through the connecting block, so that the hydraulic cylinder can extend and retract smoothly. The telescopic rod is hinged to the hinge block through the connecting block, so that the telescopic rod can be smoothly hinged.

[0007] Furthermore, the clamping mechanism includes several arc-shaped frames arranged inside the U-shaped lifting frame. The upper and lower arc-shaped frames are arranged as a group. Several hydraulic cylinders are installed on the top of the U-shaped lifting frame. The output end of the hydraulic cylinder is fixedly connected to a ball rod through a flange. A cylindrical block is sleeved on the outside of the ball rod. Several clamping plates are arranged on the side of the upper and lower arc-shaped frames that are close to each other. A rubber pad is fixedly connected to the side of the clamping plate away from the arc-shaped frame. The rubber pad is used to contact the blade. Several ball rods are fixedly connected to the side of the clamping plate facing the arc-shaped frame. Several cylindrical blocks are fixedly connected to the side of the arc-shaped frame facing the clamping plate. When the clamping plate moves toward the blade, it will contact the blade surface through the rubber pad. The rubber pad protects the blade surface and reduces the possibility of scratches on the blade.

[0008] Furthermore, the cylindrical block one is fixedly connected to the surface of the arc-shaped frame on the side facing the arc-shaped frame, and the spherical rod one located below is fixedly connected to the bottom inner side of the U-shaped hoisting frame. The spherical rod two has a ball head on the side facing the cylindrical block two, and the ball head on the spherical rod two is rotatably connected inside the cylindrical block two. The cylindrical block two and the spherical rod two cooperate to support the clamping plate, and the spherical rod one cooperates with the cylindrical block one to support the arc-shaped frame. The clamping plate will rotate inside the cylindrical block two through the spherical rod two, so that the clamping plate adaptively fits the blade surface. And since there are multiple clamping plates, the clamping plate and the blade can be better clamped.

[0009] This utility model has the following beneficial effects: 1. This utility model, by setting an angle adjustment mechanism, specifically, after the blade is lifted, by observing the offset position of the blade, and then controlling the two hydraulic cylinders at the bottom of the lifting seat to extend or retract, will cause one end of the U-shaped lifting frame to tilt up and the other end to drop, thereby correcting the tilted blade and quickly adjusting the blade to a more horizontal position, which is convenient for subsequent connection work. This method does not require the blade to be re-lifted, thus improving the installation efficiency of the blade.

[0010] 2. This utility model, by setting up a clamping mechanism, specifically, during the clamping process of the blade, the clamping plate will contact the blade surface through the rubber pad. Since the blade surface is curved, the clamping plate will rotate within the cylindrical block through the spherical rod, thereby making the clamping plate adaptively fit the blade surface. At the same time, since the arc frame can be arbitrarily rotated and adjusted on the spherical rod through the cylindrical block, the clamping plate can be adaptively adjusted again, further increasing the contact area with the blade, thereby improving the fixing effect.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the bottom structure of the lifting seat of this utility model; Figure 3 This is a schematic diagram of the internal structure of the U-shaped hoisting frame of this utility model; Figure 4 This is a schematic diagram of the overall structure of the arc-shaped frame of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram of A in the diagram.

[0014] The attached diagram lists the components represented by each number as follows: 1. U-shaped hoisting frame; 11. Lifting seat; 12. Pulley block; 13. Steel wire rope; 2. Angle adjustment mechanism; 21. Hydraulic cylinder one; 22. Telescopic rod; 23. Connecting block; 24. Hinge block; 3. Clamping mechanism; 31. Arc frame; 311. Cylindrical block one; 312. Ball rod one; 32. Hydraulic cylinder two; 33. Cylindrical block two; 331. Ball rod two; 34. Clamping plate; 341. Rubber pad. Detailed Implementation

[0015] 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 scope of protection of the present utility model.

[0016] Please see Figures 1-5 As shown, this utility model is a blade hoisting device for wind power generation equipment, including a U-shaped hoisting frame 1, a lifting seat 11 above the U-shaped hoisting frame 1, multiple sets of pulley blocks 12 installed on the lifting seat 11, and steel wire ropes 13 sleeved on the pulley blocks 12, and also including: An angle adjustment mechanism 2 is located at the bottom of the lifting base 11. The angle adjustment mechanism 2 includes two hydraulic cylinders 21 located at the bottom of the lifting base 11. Telescopic rods 22 are installed at both ends of each hydraulic cylinder 21. Connecting blocks 23 are fixedly connected to both ends of the hydraulic cylinders 21 and the telescopic rods 22. Hinges 24 are rotatably connected to the connecting blocks 23. When the blade is lifted, by observing the blade's offset position, the two hydraulic cylinders 21 at the bottom of the lifting base 11 are controlled to extend or retract, causing one end of the U-shaped lifting frame 1 to tilt upwards and the other end to drop downwards, thereby correcting the tilted blade and quickly adjusting it to a more horizontal position for subsequent connection work. This method eliminates the need to re-lift the blade, improving the blade installation efficiency. Clamping mechanism 3 is located inside the U-shaped lifting frame 1 and is used to clamp and fix the blade. Hydraulic cylinder 21 is used to push the U-shaped lifting frame 1 to adjust its position, and telescopic rod 22 is used to increase the strength of the connection between lifting seat 11 and U-shaped lifting frame 1.

[0017] The top of the upper hinge block 24 is fixedly connected to the bottom of the lifting seat 11, and the lower hinge block 24 is fixedly connected to the top of the U-shaped hoisting frame 1. The telescopic rod 22 is divided into an inner rod and an outer rod.

[0018] The clamping mechanism 3 includes several arc-shaped frames 31 arranged inside the U-shaped lifting frame 1. The upper and lower arc-shaped frames 31 are arranged as a group. Several hydraulic cylinders 32 are mounted on the top of the U-shaped lifting frame 1. A ball-shaped rod 312 is fixedly connected to the output end of each hydraulic cylinder 32 via a flange. A cylindrical block 311 is sleeved on the outer side of the ball-shaped rod 312. Several clamping plates 34 are arranged on the side of the upper and lower arc-shaped frames 31 that are close to each other. A rubber pad 341 is fixedly connected to the side of the clamping plate 34 away from the arc-shaped frame 31. The rubber pad 341 is used to contact the blades. Several clamping plates 34 are fixedly connected to the side of the clamping plate 34 facing the arc-shaped frame 31. A spherical rod 331 and an arc-shaped frame 31 are fixedly connected to several cylindrical blocks 33 on the side facing the clamping plate 34. During the clamping process of the blade, the clamping plate 34 will contact the blade surface through the rubber pad 341. Since the blade surface is curved, the clamping plate 34 will rotate within the cylindrical blocks 33 via the spherical rod 331, so that the clamping plate 34 adaptively fits the blade surface. At the same time, since the arc-shaped frame 31 can be arbitrarily rotated and adjusted on the spherical rod 312 via the cylindrical block 311, the clamping plate 34 can be adaptively adjusted again, further increasing the contact area with the blade, thereby improving the fixing effect.

[0019] The cylindrical block 311 is fixedly connected to the surface of the arc frame 31 on the side facing the arc frame 31, and the spherical rod 312 located below is fixedly connected to the bottom of the inner side of the U-shaped hoisting frame 1.

[0020] The ball head of the spherical rod 331 facing the cylindrical block 33 is rotatably connected to the inside of the cylindrical block 33. The cylindrical block 33 and the ball head 331 cooperate to support the clamping plate 34. The ball rod 312 cooperates with the cylindrical block 311 to support the arc frame 31.

[0021] One specific application of this embodiment is: In use, the lifting platform 11 is connected to the crane via pulley block 12 and wire rope 13. The crane controls the retraction of wire rope 13 to raise and lower the lifting platform 11. Hydraulic cylinders 21 and 32 are both connected to the hydraulic system to control their activation. Then, the U-shaped lifting frame 1 is moved to the blade to be lifted, so that the blade fits between the upper and lower arc-shaped frames 31. Next, hydraulic cylinder 32 is activated to drive the upper arc-shaped frame 31 downwards, causing the clamping plate 34 to move downwards and contact the blade surface via rubber pad 341. The rubber pad 341 protects the blade surface and reduces scratches. In this case, the upper and lower clamping plates 34 cooperate to clamp and fix the blade. Since the blade surface is curved, during the clamping process, the clamping plate 34 will rotate within the cylindrical block 33 via the ball rod 331, so that the clamping plate 34 adapts to fit the blade surface. Since there are multiple clamping plates 34, the clamping plates 34 can better clamp the blade. At the same time, since the arc frame 31 can be arbitrarily rotated and adjusted on the ball rod 312 via the cylindrical block 311, the clamping plate 34 can be adjusted again to further increase the contact area with the blade, thereby improving the fixing effect. After the blade is fixed, the blade can be lifted. After the blade is lifted, by observing the offset position of the blade, the two hydraulic cylinders 21 at the bottom of the lifting seat 11 are then activated. One hydraulic cylinder 21 contracts while the other extends, thereby correcting the tilted blade. Through the contraction or extension of the two hydraulic cylinders 21, one end of the U-shaped lifting frame 1 tilts up and the other end drops, thereby quickly adjusting the blade to a more horizontal position. During the adjustment process, the telescopic rod 22 extends or contracts, making the movement of the U-shaped lifting frame 1 more stable and improving the overall strength. By adjusting the blade to a horizontal position, subsequent connection work is facilitated, and the installation efficiency of the blade is improved.

[0022] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A blade hoisting device for wind power generation equipment, comprising a U-shaped hoisting frame (1), a lifting seat (11) above the U-shaped hoisting frame (1), a plurality of pulley sets (12) installed on the lifting seat (11), and a steel wire rope (13) sleeved on the pulley sets (12), characterized in that, Also includes: An angle adjustment mechanism (2) is provided at the bottom of the lifting seat (11). The angle adjustment mechanism (2) includes two hydraulic cylinders (21) at the bottom of the lifting seat (11). Telescopic rods (22) are provided at the front and rear of each hydraulic cylinder (21). Connecting blocks (23) are fixedly connected to both ends of the hydraulic cylinders (21) and both ends of the telescopic rods (22). Hinges (24) are rotatably connected to the connecting blocks (23). Clamping mechanism (3) is provided on the inner side of the U-shaped hoisting frame (1) and is used to clamp and fix the blade; The hydraulic cylinder (21) is used to push the U-shaped hoisting frame (1) to adjust its position, and the telescopic rod (22) is used to increase the strength of the connection between the lifting seat (11) and the U-shaped hoisting frame (1).

2. The blade hoisting device for wind power generation equipment according to claim 1, characterized in that, The top of the upper hinge block (24) is fixedly connected to the bottom of the lifting seat (11), and the lower hinge block (24) is fixedly connected to the top of the U-shaped hoisting frame (1). The telescopic rod (22) is divided into an inner rod and an outer rod.

3. The blade hoisting device for wind power generation equipment according to claim 2, characterized in that, The clamping mechanism (3) includes several arc-shaped frames (31) arranged inside the U-shaped hoisting frame (1). The upper and lower arc-shaped frames (31) are arranged as a group. Several hydraulic cylinders (32) are installed on the top of the U-shaped hoisting frame (1). The output end of the hydraulic cylinders (32) is fixedly connected to a ball rod (312) through a flange. A cylindrical block (311) is sleeved on the outside of the ball rod (312).

4. The blade hoisting device for wind power generation equipment according to claim 3, characterized in that, Several clamping plates (34) are provided on the side of the upper and lower two arc-shaped frames (31) that are close to each other. A rubber pad (341) is fixedly connected to the side of the clamping plate (34) away from the arc-shaped frame (31). The rubber pad (341) is used to contact the blade. Several spherical rods (331) are fixedly connected to the side of the clamping plate (34) facing the arc-shaped frame (31). Several cylindrical blocks (33) are fixedly connected to the side of the arc-shaped frame (31) facing the clamping plate (34).

5. A blade hoisting device for wind power generation equipment according to claim 4, characterized in that, The cylindrical block (311) is fixedly connected to the surface of the arc frame (31) on the side facing the arc frame (31), and the spherical rod (312) located below is fixedly connected to the bottom of the inner side of the U-shaped hoisting frame (1).

6. A blade hoisting device for wind power generation equipment according to claim 4, characterized in that, The spherical rod 2 (331) has a ball head on the side facing the cylindrical block 2 (33), and the ball head on the spherical rod 2 (331) is rotatably connected to the inside of the cylindrical block 2 (33).

7. A blade hoisting device for wind power generation equipment according to claim 4, characterized in that, The second cylindrical block (33) and the second spherical rod (331) cooperate to support the clamping plate (34), and the first spherical rod (312) cooperates with the first cylindrical block (311) to support the arc frame (31).

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