Auxiliary hoisting device for wind power generation fan blade

Abstract

The invention discloses a wind power generation fan blade auxiliary hoisting device, and particularly relates to the technical field of hoisting, the wind power generation fan blade auxiliary hoisting device comprises an auxiliary arm, a winch and a hoisting wire, the winch is fixed on one side of the auxiliary arm, and a locking mechanism is arranged at the output end of the winch; the locking mechanism comprises a rotating shaft fixedly arranged at the output end of the winch, one end of the rotating shaft is fixedly connected with a gear, an arc-shaped tooth block is arranged on one side of the outer portion of the gear, and one side of the arc-shaped tooth block is fixedly connected with a connecting block. And an electric cylinder is fixedly mounted on one side of the connecting block. According to the anti-falling device, the locking mechanism and the winch are adopted to drive the lifting wire to wind, the winch drives the rotating shaft to rotate, the electric cylinder is supported through the auxiliary arm, the arc-shaped tooth block is inserted into the outer wall groove body of the gear in an extruding mode, the winch can be locked when the winch is wound to the designated position, the lifting wire on the winch is prevented from falling, and the anti-falling effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting, and more specifically, to an auxiliary hoisting device for wind turbine blades. Background Art

[0002] Through reasonable design, auxiliary lifting devices can simplify the lifting process, reduce manual operations and improve lifting efficiency. Some devices adopt structures such as lifting beams, lifting ropes, and lifting belts to easily connect cranes and wind turbine blades to achieve rapid lifting.

[0003] Among the existing public documents, the patent with patent announcement number CN208619270U discloses a high-power wind turbine generator set turning system and its wind turbine generator set. This technology is used to fix the connection with the wind turbine frame through a support frame; one side of the support frame is also connected to an anti-torsion arm with an axle pin, and the other end of the anti-torsion arm is connected to the turning mechanism; the turning mechanism is also connected to the turning auxiliary system to realize the motion control of the turning mechanism, and lock the docking position of the hub and the blade through the hub locking mechanism. This invention can realize the blade lifting operation, adjust the installation position of the impeller docking blade, turn or brake with load and variable load, accurately turn the docking blade, adapt to the cabin environment, and can smoothly and safely transmit the turning or braking load. However, this patent has the following defects.

[0004] Although the wind turbine blades can be lifted during the auxiliary lifting process, the reeling portion needs to be driven to a specified position during use. Once the reeling portion becomes loose, the wind turbine blades may shake during the auxiliary lifting, which may easily cause the wind turbine blades to fall and be damaged. Therefore, an auxiliary lifting device for wind turbine blades is needed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solutions: an auxiliary lifting device for a wind turbine blade, comprising an auxiliary arm, a winch and a lifting line, the winch being fixed on one side of the auxiliary arm, and a locking mechanism being provided at the output end of the winch; the locking mechanism comprising a rotating shaft fixedly arranged at the output end of the winch, and a gear being fixedly connected to one end of the rotating shaft, an arc-shaped tooth block being provided on an outer side of the gear, and a connecting block being fixedly connected to one side of the arc-shaped tooth block; an electric cylinder being fixedly installed on one side of the connecting block, the electric cylinder being fixedly connected to the auxiliary arm, and a socket block being fixedly connected to the top end of the connecting block.

[0006] Preferably, the vertical cross-section of the arc-shaped tooth block is an arc shape, and the electric cylinder is used to push the connecting block to move, the inner wall of the sleeve block is slidably connected with a sliding rod, one end of the sliding rod is fixedly connected with a support block, and the support block is fixedly connected to the auxiliary arm; the other end of the sliding rod is fixedly connected to a limiting block, a lifting rope is fixedly installed on the top of the lifting line, the lifting rope is slidably connected to the auxiliary arm, and a lifting hook is fixedly installed on the bottom end of the lifting rope.

[0007] When this technology is used, the wind turbine blade lifting rope is docked on the hook, the winch drives the lifting line to reel in, the lifting line drives the lifting rope to reel in, the rotating shaft drives the gear to rotate, and after the wind turbine blade is auxiliary reeled in to the highest point, the electric cylinder pushes the connecting block to move left, and the arc-shaped tooth block is squeezed and inserted into the outer wall groove of the gear, so that the gear can be firmly limited and locked. To avoid the lifting line on the winch from falling, multiple gears are meshed and embedded to lock, and the winch is prevented from loosening.

[0008] Preferably, a guide adjustment mechanism is provided above the winch; the guide adjustment structure includes an articulated block fixedly arranged above the winch, and the articulated block is fixedly connected to the auxiliary arm, the inner wall of the articulated block is hinged with an articulated electric cylinder, the bottom end of the articulated electric cylinder is hinged with an articulated seat, and the top of the articulated seat is fixedly connected with a pillar; an arc-shaped groove frame is fixedly installed on the top of the pillar, and a sliding shaft is slidably connected to the inner wall of the arc-shaped groove frame, the sliding shaft is fixedly connected to the auxiliary arm, the vertical cross-section of the arc-shaped groove frame is an arc, and the outer wall of the sliding shaft and the inner wall of the arc-shaped groove frame are both smooth surfaces, and a position changing motor is fixedly installed on the bottom end of the articulated seat, and the position changing motor is used to drive the articulated seat to rotate.

[0009] When this technology is in use, the articulated seat is driven to rotate by the position changing motor, the articulated block drives the auxiliary arm to rotate, and the articulated electric cylinder rotates on the articulated seat, and the sliding shaft rotates counterclockwise inside the arc groove frame, thereby increasing the stability of the arc groove frame.

[0010] Technical effects and advantages of the present invention:

[0011] 1. The present invention adopts a locking mechanism. By starting the winch, the winch drives the hoisting line to reel in, the hoisting rope drives the hook to move up, and the winch drives the rotating shaft to rotate. After the wind turbine blades are assisted to be reeled in to the highest point, the electric cylinder is supported by the auxiliary arm, and the connecting block drives the arc-shaped tooth block to move left. The arc-shaped tooth block is squeezed and inserted into the outer wall groove of the gear, and the sleeve block moves left along the outer wall of the slide rod. The winch can be reeled in to the specified position and locked, so as to avoid the occurrence of the problem of falling of the hoisting line on the winch, and the anti-falling effect is better;

[0012] 2. The present invention uses a guide adjustment mechanism to drive the articulated seat to rotate through a position changing motor, and the articulated electric cylinder pushes the articulated block upward, the auxiliary arm rotates on the articulated seat, and the articulated electric cylinder rotates on the articulated seat, and the sliding shaft rotates counterclockwise inside the arc-shaped groove frame, ensuring that the auxiliary arm rotates stably according to the specified position during the rotation process, and the rotation stability of the auxiliary arm is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the auxiliary lifting device for wind turbine blades of the present invention.

[0014] Figure 2 It is a schematic diagram of the partial structure of the connection between the winch and the auxiliary arm of the present invention.

[0015] Figure 3 It is a schematic diagram of the partial structure of the connection between the lifting line and the lifting rope of the present invention.

[0016] Figure 4 It is a rear structural schematic diagram of the auxiliary lifting device for wind turbine blades of the present invention.

[0017] Figure 5 It is a schematic diagram of the partial structure of the connection between the hinge seat and the support of the present invention.

[0018] The accompanying drawings are marked as follows: 1. auxiliary arm; 2. winch; 3. lifting line; 4. rotating shaft; 5. gear; 6. arc-shaped tooth block; 7. connecting block; 8. electric cylinder; 9. sleeve block; 10. slide rod; 11. support block; 12. limit block; 13. lifting rope; 14. hook; 15. articulated block; 16. articulated electric cylinder; 17. articulated seat; 18. sliding shaft; 19. arc-shaped slot frame; 20. support; 21. position changing motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of 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.

[0020] As attached Figure 1-5 An auxiliary lifting device for wind turbine blades is shown, and a locking mechanism is arranged on the auxiliary lifting device for wind turbine blades. The locking mechanism can lock the winch 2 when it is reeled in to a specified position to avoid the lifting line 3 on the winch 2 from falling, and the anti-falling effect is better. The specific structural arrangement of the locking mechanism is as follows.

[0021] In this embodiment, as shown in the attached Figure 1-2As shown, the winch 2 is fixed on one side of the auxiliary arm 1, and a locking mechanism is provided at the output end of the winch 2; the locking mechanism includes a rotating shaft 4 fixedly arranged at the output end of the winch 2, and a gear 5 is fixedly connected to one end of the rotating shaft 4, an arc-shaped tooth block 6 is provided on the outer side of the gear 5, and a connecting block 7 is fixedly connected to one side of the arc-shaped tooth block 6; an electric cylinder 8 is fixedly installed on one side of the connecting block 7, and the electric cylinder 8 is fixedly connected to the auxiliary arm 1, and a sleeve block 9 is fixedly connected to the top of the connecting block 7. The vertical section of the arc-shaped tooth block 6 is an arc shape, and the electric cylinder 8 is used to push the connecting block 7 to move.

[0022] In this embodiment, as shown in the attached Figure 2-3 As shown, the inner wall of the sleeve block 9 is slidably connected with a slide bar 10, one end of the slide bar 10 is fixedly connected with a support block 11, and the support block 11 is fixedly connected to the auxiliary arm 1; the other end of the slide bar 10 is fixedly connected with a limit block 12, so that the auxiliary arm 1 supports the support block 11, the support block 11 supports the slide bar 10, and the sleeve block 9 is limited and protected by the limit block 12. A lifting rope 13 is fixedly installed at the top of the lifting line 3, and the lifting rope 13 is slidably connected to the auxiliary arm 1. A hook 14 is fixedly installed at the bottom of the lifting rope 13, so that the lifting line 3 drives the lifting rope 13 to reel, and the lifting rope 13 drives the hook 14 to move up, so as to realize the lifting operation.

[0023] When the auxiliary lifting device for wind turbine blades of the present technology is in use, the lifting rope of the wind turbine blades is docked on the hook 14, and the winch 2 is started, and the winch 2 drives the lifting line 3 to reel in, and the lifting line 3 moves down along the inner wall of the auxiliary arm 1 to reel in, and at the same time, the lifting line 3 drives the lifting rope 13 to reel in, and the lifting rope 13 drives the hook 14 to move up, and at the same time, the winch 2 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the gear 5 to rotate, and after the wind turbine blades are auxiliary reeled to the highest point, the auxiliary arm 1 supports the electric cylinder 8, and the electric cylinder 8 pushes the connecting block 7 to move left, and the connecting block 7 drives the arc-shaped tooth block 6 to move left, and the arc-shaped tooth block 6 is squeezed and inserted in the outer wall groove of the gear 5, so that the gear 5 can be firmly limited and locked. At the same time, the connecting block 7 drives the socket block 9 to move left, and the socket block 9 moves left along the outer wall of the slide rod 10. At the same time, the auxiliary arm 1 supports the support block 11, the support block 11 supports the slide rod 10, and the socket block 9 is limited by the limit block 12. In this way, the winch 2 can be reeled in to the specified position and locked to prevent the lifting line 3 on the winch 2 from falling. Multi-gear meshing and embedding locking are performed to prevent the winch 2 from loosening.

[0024] In this embodiment, as shown in the attached Figure 4-5As shown, a guide adjustment mechanism is provided above the winch 2; the guide adjustment structure includes an articulated block 15 fixedly arranged above the winch 2, and the articulated block 15 is fixedly connected to the auxiliary arm 1, the inner wall of the articulated block 15 is articulated with an articulated electric cylinder 16, the bottom end of the articulated electric cylinder 16 is articulated with an articulated seat 17, and the top of the articulated seat 17 is fixedly connected with a support 20; an arc-shaped slot frame 19 is fixedly installed at the top of the support 20, and a sliding shaft 18 is slidably connected to the inner wall of the arc-shaped slot frame 19, and the sliding shaft 18 is fixedly connected to the auxiliary arm 1. The vertical cross-section of the arc-shaped slot frame 19 is an arc, and the outer wall of the sliding shaft 18 and the inner wall of the arc-shaped slot frame 19 are both smooth surfaces. A position-changing motor 21 is fixedly installed at the bottom end of the articulated seat 17, and the position-changing motor 21 is used to drive the articulated seat 17 to rotate.

[0025] When the present technology is in use, the articulated seat 17 is driven to rotate by the position changing motor 21, and the articulated electric cylinder 16 pushes the articulated block 15 upward, the articulated block 15 drives the auxiliary arm 1 to rotate, the auxiliary arm 1 rotates on the articulated seat 17, and the articulated electric cylinder 16 rotates on the articulated seat 17, and the auxiliary arm 1 drives the sliding shaft 18 to rotate counterclockwise, the sliding shaft 18 rotates counterclockwise inside the arc-shaped slot frame 19, and the articulated seat 17 supports the pillar 20, and the pillar 20 supports the arc-shaped slot frame 19, thereby increasing the stability of the arc-shaped slot frame 19.

[0026] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary hoisting device for wind turbine blades, comprising an auxiliary arm (1), a hoist (2) and a hoisting line (3), wherein the hoist (2) is fixed on one side of the auxiliary arm (1), and is characterized in that: The output end of the hoist (2) is provided with a locking mechanism; The locking mechanism comprises a rotating shaft (4) fixedly arranged at the output end of the winch (2), and one end of the rotating shaft (4) is fixedly connected to a gear (5), an arc-shaped tooth block (6) is provided on one side of the outer side of the gear (5), and one side of the arc-shaped tooth block (6) is fixedly connected to a connecting block (7); An electric cylinder (8) is fixedly mounted on one side of the connection block (7), the electric cylinder (8) is fixedly connected to the auxiliary arm (1), and a socket block (9) is fixedly connected to the top end of the connection block (7).

2. The auxiliary hoisting device for wind turbine blades according to claim 1, characterized in that: The vertical cross section of the arc-shaped tooth block (6) is in the shape of a circular arc, and the electric cylinder (8) is used to push the connecting block (7) to move.

3. The auxiliary hoisting device for wind turbine blades according to claim 1, characterized in that: The inner wall of the sleeve block (9) is slidably connected to a slide rod (10), one end of the slide rod (10) is fixedly connected to a support block (11), and the support block (11) is fixedly connected to the auxiliary arm (1); The other end of the sliding rod (10) is fixedly connected to a limiting block (12).

4. The auxiliary hoisting device for wind turbine blades according to claim 1, characterized in that: A lifting rope (13) is fixedly installed at the top end of the lifting line (3), the lifting rope (13) is slidably connected to the auxiliary arm (1), and a lifting hook (14) is fixedly installed at the bottom end of the lifting rope (13).

5. The auxiliary hoisting device for wind turbine blades according to claim 1, characterized in that: A guide adjustment mechanism is provided above the hoist (2); The guide adjustment structure comprises an articulated block (15) fixedly arranged above the winch (2), and the articulated block (15) is fixedly connected to the auxiliary arm (1), an articulated electric cylinder (16) is articulated on the inner wall of the articulated block (15), an articulated seat (17) is articulated at the bottom end of the articulated electric cylinder (16), and a support (20) is fixedly connected to the top end of the articulated seat (17); An arc-shaped slot frame (19) is fixedly mounted on the top of the support (20), and a sliding shaft (18) is slidably connected to the inner wall of the arc-shaped slot frame (19), and the sliding shaft (18) is fixedly connected to the auxiliary arm (1).

6. The auxiliary hoisting device for wind turbine blades according to claim 5, characterized in that: The vertical cross-section of the arc-shaped groove frame (19) is in the shape of an arc, and the outer wall of the sliding shaft (18) and the inner wall of the arc-shaped groove frame (19) are both smooth surfaces.

7. The auxiliary hoisting device for wind turbine blades according to claim 5, characterized in that: A position changing motor (21) is fixedly mounted on the bottom end of the articulated seat (17), and the position changing motor (21) is used to drive the articulated seat (17) to rotate.

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