Wind power blade lifting device

Abstract

The utility model relates to the technical field of wind power blade lifting, and particularly discloses a wind power blade lifting device which comprises a first base and a second base, an adjusting mechanism is arranged between the first base and the second base, a first limiting mechanism is arranged on the upper end face of the first base, and a second limiting mechanism is arranged on the upper end face of the second base. By means of a triangular structure formed between the first supporting block and the two slope blocks, one ends of cylindrical heads of the wind power blades with different thicknesses can be stably limited, by means of mutual cooperation between the two abutting plates and the second supporting block, the middle-right parts of the wind power blades with different sizes can be stably limited, and meanwhile, the two abutting plates and the second supporting block are matched with each other to stably limit the cylindrical heads of the wind power blades with different sizes. The distance between the first base and the second base is adjusted, so that the first base and the second base are matched with the wind power blades of different lengths, the wind power blades of different sizes are stably lifted, a limiting mechanism of the lifting device does not need to be replaced, operation is easy, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade lifting technology, and specifically discloses a wind turbine blade lifting device. Background Technology

[0002] Wind power, also known as wind turbine power generation, is a method of generating electricity using wind energy. Wind turbines convert wind energy into mechanical or electrical energy. The technical principle is that the wind turbine's rotor drives the generator, producing electricity. Wind turbine blades are a crucial component of wind turbine generators, primarily converting wind energy into electrical energy. Wind turbine blade materials require low density, optimal fatigue strength and mechanical properties, low cost, normal elasticity and vibration frequency characteristics, corrosion resistance, UV resistance, lightning strike resistance, and low maintenance costs. Wind turbine blade lifting devices are mainly used for storing and lifting wind turbine blades. Operators move the lifting device to a suitable position and then place the wind turbine blade on it, thus completing the storage and lifting operation.

[0003] With the continuous progress of the wind turbine blade industry, there are more and more models of wind turbine blades. As a result, many different sizes of wind turbine blades are produced. The produced blades are usually stored in the storage yard, which requires the use of lifting devices to store the wind turbine blades and prevent the wind turbine blades from contacting the ground and being corroded.

[0004] The existing wind turbine blade lifting devices have a fixed size and can only lift wind turbine blades of the same size. Therefore, when used to store wind turbine blades of different sizes, the blades may become unstable on the lifting device, posing a safety hazard to the operators. When lifting wind turbine blades of other sizes, the limiting mechanism of the lifting device needs to be replaced, which is a cumbersome and inconvenient process. Summary of the Invention

[0005] This utility model proposes a wind turbine blade lifting device that can lift wind turbine blades of different sizes without replacing the limiting mechanism of the lifting device. It is simple to operate and convenient to use.

[0006] This utility model is implemented as follows: a wind turbine blade lifting device includes a first base and a second base, an adjustment mechanism is provided between the first base and the second base, a first limiting mechanism is provided on the upper end surface of the first base, and a second limiting mechanism is provided on the upper end surface of the second base.

[0007] The adjustment mechanism includes an outer cylinder disposed between a first base and a second base and distributed front to back. Multiple inner rods are fixedly connected to the opposite side walls of the first base and the second base. The multiple inner rods are arranged in pairs, and the other end of each pair of inner rods extends into the interior of the multiple outer cylinders. A cavity is opened inside the middle pair of inner rods. Two fixed plates are fixedly connected to the interior of the middle outer cylinder. A first screw is rotatably connected between the two fixed plates. The two ends of the first screw extend into the interior of the two cavities.

[0008] The first limiting mechanism includes a first support block fixedly connected to the upper end face of the first base, and two symmetrically distributed inclined blocks located on the left and right sides of the first support block are slidably connected to the upper end face of the first base.

[0009] The second limiting mechanism includes a second support block fixedly connected to the upper end face of the second base. Two vertical plates distributed front and rear are slidably connected to the upper end face of the second base. A connecting rod is fixedly connected to one side wall of each of the two vertical plates, and the other end of each of the two connecting rods is rotatably connected to an abutment plate through a hinge seat.

[0010] As a preferred embodiment of the wind turbine blade lifting device of this utility model, the adjusting mechanism further includes a worm gear fixedly connected to the outer wall of the first screw and located between two fixed plates, and a worm gear rotatably connected to the worm gear inside the middle outer cylinder, the worm gear being driven by a first stepper motor installed on the outer wall of the middle outer cylinder.

[0011] As a preferred embodiment of the wind turbine blade lifting device of this utility model, the first limiting mechanism further includes two first sliding grooves opened on the upper surface of the first base and distributed to the left and right. The interior of each of the two first sliding grooves is rotatably connected to a second screw. The lower end surfaces of the two inclined blocks are fixedly connected to first sliders that are threadedly connected to the two second screws respectively. One end of each of the two second screws extends to the rear of the first base and is fixedly connected to a synchronous pulley. A synchronous belt is driven between the two synchronous pulleys.

[0012] As a preferred embodiment of the wind turbine blade lifting device of this utility model, the second limiting mechanism further includes a second sliding groove opened on the upper end face of the second base, a third screw is rotatably connected inside the second sliding groove, and a second slider threadedly connected to the third screw is fixedly connected to the lower end face of the two vertical plates. The third screw is driven by a second stepper motor installed on the front end face of the second base.

[0013] As a preferred embodiment of the wind turbine blade lifting device of this utility model, a third stepper motor is installed on the front end face of the first base, and the output end of the third stepper motor is fixedly connected to one of the second screws.

[0014] As a preferred embodiment of the wind turbine blade lifting device of this utility model, the lower end surfaces of the first base and the second base are each equipped with a plurality of evenly distributed rollers.

[0015] As a preferred embodiment of the wind turbine blade lifting device of this utility model, the first screw and the third screw are bidirectional screws.

[0016] The beneficial effects of this utility model are:

[0017] The triangular structure formed by the first support block and the two inclined blocks can stably limit one end of the cylindrical head of wind turbine blades of different thicknesses. The cooperation between the two abutment plates and the second support block can stably limit the middle-right part of wind turbine blades of different sizes. At the same time, by adjusting the distance between the first base and the second base, the first base and the second base can be adapted to wind turbine blades of different lengths, thereby stably supporting wind turbine blades of different sizes. There is no need to replace the limiting mechanism of the supporting device, making it simple to operate and convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front cross-sectional view of the present invention.

[0020] Figure 3 This is a top view sectional structural diagram of the present invention;

[0021] Figure 4 This utility model Figure 2 Enlarged structural diagram of part a;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the outer cylinder of this utility model.

[0023] In the diagram: 1. First base; 2. Second base; 3. Outer cylinder; 4. Inner rod; 5. Cavity; 6. Fixing plate; 7. First screw; 8. First support block; 9. Inclined block; 10. Second support block; 11. Vertical plate; 12. Connecting rod; 13. Abutment plate; 14. Worm gear; 15. Worm; 16. First stepper motor; 17. First slide groove; 18. Second screw; 19. First slider; 20. Synchronous pulley; 21. Synchronous belt; 22. Second slide groove; 23. Third screw; 24. Second slider; 25. Second stepper motor; 26. Third stepper motor; 27. Roller. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0025] Please see Figure 1-5 A wind turbine blade lifting device includes a first base 1 and a second base 2. An adjustment mechanism is provided between the first base 1 and the second base 2. A first limiting mechanism is provided on the upper end surface of the first base 1, and a second limiting mechanism is provided on the upper end surface of the second base 2.

[0026] The adjustment mechanism includes an outer cylinder 3 disposed between the first base 1 and the second base 2 and distributed front to back. Multiple inner rods 4 are fixedly connected to the opposite side walls of the first base 1 and the second base 2. The multiple inner rods 4 are arranged in pairs, and the other end of each pair of inner rods 4 extends into the interior of the multiple outer cylinders 3. A cavity 5 is opened in the interior of the middle pair of inner rods 4. Two fixed plates 6 are fixedly connected to the interior of the middle outer cylinder 3, and a first screw 7 is rotatably connected between the two fixed plates 6. The two ends of the first screw 7 extend into the interior of the two cavities 5 respectively.

[0027] The first limiting mechanism includes a first support block 8 fixedly connected to the upper end face of the first base 1, and two symmetrically distributed inclined blocks 9 located on the left and right sides of the first support block 8 slidably connected to the upper end face of the first base 1.

[0028] The second limiting mechanism includes a second support block 10 fixedly connected to the upper end face of the second base 2. Two vertical plates 11 distributed front and back are slidably connected to the upper end face of the second base 2. A connecting rod 12 is fixedly connected to one side wall opposite to the two vertical plates 11. The other end of the two connecting rods 12 is rotatably connected to an abutment plate 13 through a hinge seat.

[0029] In this embodiment: During use, the wind turbine blade is hoisted into the lifting device by a crane, with one cylindrical end of the blade positioned on the upper surface of the first support block 8 and the middle portion of the blade positioned on the upper surface of the second support block 10. Then, the two inclined blocks 9 move in opposite directions, causing their inclined surfaces to abut against the outer wall of one cylindrical end of the wind turbine blade, forming a triangular structure between the first support block 8 and the two inclined blocks 9. This triangular structure provides stable positioning for one cylindrical end of the wind turbine blade. Simultaneously, the two vertical plates 11 move in opposite directions, and the two vertical plates 11, in conjunction with the two connecting rods 12, drive the two... The abutment plates 13 move in opposite directions, so that the two abutment plates 13 abut against the middle right part of the wind turbine blade. Since the two abutment plates 13 are rotatably connected to the two connecting rods 12 through the hinge, and the two side walls of the middle right part of the wind turbine blade are inclined, the two abutment plates 13 can rotate according to the inclination of the middle right part of the wind turbine blade, so that the two abutment plates 13 can abut against the middle right part of the wind turbine blade tightly. Then, through the mutual cooperation between the two abutment plates 13 and the second support block 10, the middle right part of the wind turbine blade is stably limited, thereby stably supporting the wind turbine blade.

[0030] The triangular structure formed by the first support block 8 and the two inclined blocks 9 can stably limit one end of the cylindrical head of wind turbine blades of different thicknesses. The cooperation between the two abutment plates 13 and the second support block 10 can stably limit the middle right part of wind turbine blades of different sizes. At the same time, by adjusting the distance between the first base 1 and the second base 2, the first base 1 and the second base 2 can be adapted to wind turbine blades of different lengths, thereby stably supporting wind turbine blades of different sizes. There is no need to replace the limiting mechanism of the supporting device. The operation is simple and convenient.

[0031] When adjusting the distance between the first base 1 and the second base 2, the first screw 7 rotates, and the first screw 7 drives the inner rod 4 located in the middle group to move in opposite directions. The inner rod 4 located in the middle group drives the first base 1 and the second base 2 to move away from each other, thereby adjusting the distance between the first base 1 and the second base 2. Through the other two outer cylinders 3 and the two groups of inner rods 4, the first base 1 and the second base 2 can be limited, so that the first base 1 and the second base 2 can move smoothly. At the same time, through the stop blocks set at both ends of the first screw 7, the inner rod 4 located in the middle group can be limited, preventing the inner rod 4 located in the middle group from detaching from both ends of the first screw 7.

[0032] As a technical optimization of this utility model, the adjustment mechanism also includes a worm gear 14 fixedly connected to the outer wall of the first screw 7 and located between the two fixed plates 6, and a worm 15 rotatably connected to the worm gear 14 inside the middle outer cylinder 3. The worm 15 is driven by a first stepper motor 16 installed on the outer wall of the middle outer cylinder 3.

[0033] In this embodiment: the first stepper motor 16 is started, the first stepper motor 16 drives the worm gear 15 to rotate, and the worm gear 15, together with the worm wheel 14, drives the first screw 7 to rotate.

[0034] As a technical optimization of this utility model, the first limiting mechanism also includes two first sliding grooves 17 opened on the upper surface of the first base 1 and distributed on the left and right. The interior of each of the two first sliding grooves 17 is rotatably connected to a second screw 18. The lower end surfaces of the two inclined blocks 9 are fixedly connected to first sliders 19 that are threadedly connected to the two second screws 18 respectively. One end of each of the two second screws 18 extends to the rear of the first base 1 and is fixedly connected to a synchronous pulley 20. A synchronous belt 21 is connected between the two synchronous pulleys 20 for transmission.

[0035] In this embodiment: one of the second screws 18 rotates, one of the second screws 18 drives one of the synchronous pulleys 20 to rotate, one of the synchronous pulleys 20, together with the synchronous belt 21, drives another synchronous pulley 20 to rotate, and the other synchronous pulley 20 drives the second screw 18 to rotate synchronously. The two synchronously rotating second screws 18, together with the two first sliders 19, drive the two inclined blocks 9 to move in opposite directions.

[0036] As a technical optimization of this utility model, the second limiting mechanism also includes a second sliding groove 22 opened on the upper end face of the second base 2. A third screw 23 is rotatably connected inside the second sliding groove 22. The lower end faces of the two vertical plates 11 are fixedly connected with second sliders 24 that are threadedly connected to the third screw 23. The third screw 23 is driven by a second stepper motor 25 installed on the front end face of the second base 2.

[0037] In this embodiment: the second stepper motor 25 is started, the second stepper motor 25 drives the third screw 23 to rotate, and the third screw 23, together with the two second sliders 24, drives the two vertical plates 11 to move in opposite directions.

[0038] As a technical optimization of this utility model, a third stepper motor 26 is installed on the front end face of the first base 1, and the output end of the third stepper motor 26 is fixedly connected to one of the second screws 18.

[0039] In this embodiment, the third stepper motor 26 can drive one of the second screws 18 to rotate.

[0040] As a technical optimization of this utility model, multiple evenly distributed rollers 27 are installed on the lower end surfaces of the first base 1 and the second base 2.

[0041] In this embodiment, multiple rollers 27 facilitate the movement of the first base 1 and the second base 2.

[0042] As a technical optimization of this utility model, the first screw 7 and the third screw 23 are bidirectional screws.

[0043] In this embodiment, the first screw 7 and the third screw 23 are bidirectional screws, which can drive the inner rod 4 and the two vertical plates 11 located in the middle to move in opposite directions.

[0044] Working principle and usage process of this utility model:

[0045] In use, the wind turbine blade is hoisted into the lifting device by a crane, with one cylindrical end of the blade positioned on the upper surface of the first support block 8 and the middle portion of the blade positioned on the upper surface of the second support block 10. Then, the third stepper motor 26 is activated, driving one of the second screws 18 to rotate. This rotation, in turn, drives one of the synchronous pulleys 20. The synchronous pulley 20, in conjunction with the synchronous belt 21, drives the other synchronous pulley 20 to rotate, which in turn drives the second screw 18 to rotate synchronously. The two synchronously rotating second screws 18, in conjunction with the two first sliders 19, move the two inclined blocks 9 in opposite directions, causing their inclined surfaces to abut against the outer wall of one cylindrical end of the blade. This creates a triangular structure between the first support block 8 and the two inclined blocks 9, which in turn supports the cylindrical end of the wind turbine blade. The end is stabilized and limited. At the same time, the second stepper motor 25 is started. The second stepper motor 25 drives the third screw 23 to rotate. The third screw 23, together with the two second sliders 24, drives the two vertical plates 11 to move in opposite directions. The two vertical plates 11, together with the two connecting rods 12, drive the two abutment plates 13 to move in opposite directions, so that the two abutment plates 13 abut against the middle right part of the wind turbine blade. Since the two abutment plates 13 are rotatably connected to the two connecting rods 12 through hinges, and the two side walls of the middle right part of the wind turbine blade are inclined, the two abutment plates 13 can rotate according to the inclination of the middle right part of the wind turbine blade, so that the two abutment plates 13 can abut against the middle right part of the wind turbine blade tightly. Then, through the mutual cooperation between the two abutment plates 13 and the second support block 10, the middle right part of the wind turbine blade is stabilized and limited, thereby stabilizing and lifting the wind turbine blade.

[0046] The triangular structure formed by the first support block 8 and the two inclined blocks 9 can stably limit one end of the cylindrical head of wind turbine blades of different thicknesses. The cooperation between the two abutment plates 13 and the second support block 10 can stably limit the middle right part of wind turbine blades of different sizes. At the same time, by adjusting the distance between the first base 1 and the second base 2, the first base 1 and the second base 2 can be adapted to wind turbine blades of different lengths, thereby stably supporting wind turbine blades of different sizes. There is no need to replace the limiting mechanism of the supporting device. The operation is simple and convenient.

[0047] When adjusting the distance between the first base 1 and the second base 2, the first stepper motor 16 is started. The first stepper motor 16 drives the worm gear 15 to rotate. The worm gear 15, in conjunction with the worm wheel 14, drives the first screw 7 to rotate. The first screw 7 drives the inner rod 4 located in the middle group to move in opposite directions. The inner rod 4 located in the middle group respectively drives the first base 1 and the second base 2 to move away from each other, thereby adjusting the distance between the first base 1 and the second base 2.

[0048] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A wind turbine blade lifting device comprising a first base (1) and a second base (2), characterized in that: The first base (1) and the second base (2) are provided with an adjusting mechanism, the upper end surface of the first base (1) is provided with a first limiting mechanism, and the upper end surface of the second base (2) is provided with a second limiting mechanism; The adjusting mechanism comprises an outer cylinder (3) arranged between the first base (1) and the second base (2) and distributed in front and back, and the side walls opposite to the first base (1) and the second base (2) are fixedly connected with a plurality of inner rods (4) distributed in front and back, the left and right two inner rods (4) in each group are connected, and the other end of the inner rod (4) in each group extends to the inside of the plurality of outer cylinders (3), the inside of the inner rod (4) in the middle group is provided with a cavity (5), the inside of the outer cylinder (3) in the middle group is fixedly connected with two fixed plates (6) distributed in left and right, the first screw rod (7) is rotatably connected between the two fixed plates (6), and the two ends of the first screw rod (7) extend to the inside of the two cavities (5). The first limiting mechanism comprises a first support block (8) fixedly connected to the upper end surface of the first base (1), and the upper end surface of the first base (1) is slidably connected with two inclined blocks (9) symmetrically distributed and located on the left and right sides of the first support block (8). The second limiting mechanism comprises a second support block (10) fixedly connected to the upper end surface of the second base (2), and the upper end surface of the second base (2) is slidably connected with two vertical plates (11) distributed in front and back, the side walls opposite to the two vertical plates (11) are fixedly connected with connecting rods (12), and the other ends of the two connecting rods (12) are rotatably connected with abutting plates (13) through hinge seats.

2. A wind turbine blade lifting device according to claim 1, characterised in that: The adjusting mechanism further comprises a worm wheel (14) fixedly connected to the outer wall of the first screw rod (7) and located between the two fixed plates (6), a worm gear (15) rotatably connected to the inside of the outer cylinder (3) in the middle group and meshingly connected with the worm wheel (14), and the worm gear (15) is driven by a first stepping motor (16) mounted to the outer wall of the outer cylinder (3) in the middle group.

3. A wind turbine blade lifting device according to claim 1, characterised in that: The first limiting mechanism further comprises two first sliding grooves (17) formed in the upper end surface of the first base (1) and distributed in left and right, the second screw rod (18) is rotatably connected in the inside of the two first sliding grooves (17), the lower end surface of the two inclined blocks (9) is fixedly connected with first sliding blocks (19) respectively threadedly connected with the two second screw rods (18), one end of the two second screw rods (18) extends to the rear of the first base (1) and is fixedly connected with a synchronous wheel (20), and the two synchronous wheels (20) are drivingly connected with a synchronous belt (21).

4. A wind turbine blade lifting device according to claim 1, characterised in that: The second limiting mechanism further comprises a second sliding groove (22) formed in the upper end surface of the second base (2), a third screw rod (23) rotatably connected in the inside of the second sliding groove (22), second sliding blocks (24) fixedly connected to the lower end surfaces of the two vertical plates (11) and threadedly connected with the third screw rod (23), and the third screw rod (23) is driven by a second stepping motor (25) mounted to the front end surface of the second base (2).

5. A wind turbine blade lifting device according to claim 3, characterised in that: The front end surface of the first base (1) is provided with a third stepper motor (26), and the output end of the third stepper motor (26) is fixedly connected with one of the second screw rods (18).

6. A wind turbine blade lifting device according to claim 1, characterised in that: The lower end surfaces of the first base (1) and the second base (2) are provided with a plurality of evenly distributed rollers (27).

7. A wind turbine blade lifting device according to claim 4, characterised in that: The first screw rod (7) and the third screw rod (23) are bidirectional screw rods.

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