Elevator convenient to fix for offshore wind turbine generator

Abstract

The utility model discloses a convenient-to-fix elevator for an offshore wind turbine generator, which comprises an elevator frame, fixing frames and a double-head motor, the two sides of the top end of the elevator frame are connected with the fixing frames, the middle parts of the two fixing frames are connected with rotating shafts through bearings, the outer walls of the middle parts of the rotating shafts are sleeved with winding drums, and the outer walls of the middle parts of the winding drums are wound with slings; a lifting box is connected to the bottom end of the sling through a hook, a two-way threaded rod is connected to the upper portion of the interior of the lifting box through a bearing, and the opposite threaded outer walls of the two sides of the two-way threaded rod are in threaded connection with a first clamping plate and a second clamping plate correspondingly; and the output end of the positive and negative motor is connected with the bidirectional threaded rod. And the forward and reverse motor can drive the bidirectional threaded rod to rotate, so that the first clamping plate and the second clamping plate are driven to be mutually clamped and matched to play a role in fixing the wind turbine generator, and the wind turbine generator is prevented from falling off in the lifting process.

Description

Technical Field

[0001] The utility model relates to the technical field of hoists, in particular to a hoist for an offshore wind turbine set which is easy to fix. Background Art

[0002] When transporting a wind turbine, some components need to be lifted by a hoist to a height flush with the transport equipment, so that it is convenient for the operator to move the components onto the transport equipment. Application number CN201610913614.8 is retrieved, which is a hoist. The hoist of the invention has the advantages of simple and compact structure, superior control performance, smooth and reliable operation, and energy saving.

[0003] Similar to the above-mentioned hoist: although the hydraulic cylinder motion conversion mechanism cooperates with the hydraulic cylinder and the traction cable respectively to convert the axial reciprocating movement into the traction movement of the traction cable, its device does not have a fixed clamping function during the lifting process, so the parts are easy to fall off the placement plate when shaking.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a hoist for offshore wind turbines that is easy to fix is ​​proposed to achieve a more practical purpose. Summary of the invention

[0005] The purpose of the utility model is to provide a hoist for an offshore wind turbine that is easy to fix, so as to solve the problem that the hoist proposed in the above background technology does not have a fixing and clamping function during the lifting process, so the parts are easy to fall off the placement plate when shaking.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hoist for an offshore wind turbine that is easy to fix, comprising a hoisting frame, a fixing frame and a double-headed motor, the top sides of the hoisting frame are fixedly connected to the fixing frames by bolts, the middle parts of the two groups of the fixing frames are connected to rotating shafts by bearings, the two groups of the rotating shafts are in the same straight line, a winding drum is sleeved on the middle outer wall of the rotating shaft, the double-headed motor is arranged between the two groups of the fixing frames, and the output ends of the double-headed motor are respectively connected to the rotating shafts on both sides.

[0007] Furthermore, a sling is wound around the middle outer wall of the winding drum, and one end of the sling away from the winding drum is connected to a lifting box through a hook, and a bidirectional threaded rod is connected to the upper part of the lifting box through a bearing.

[0008] Furthermore, opposite threaded outer walls on both sides of the bidirectional threaded rod are respectively threadedly connected to a clamping plate No. 1 and a clamping plate No. 2, and the clamping plate No. 1 corresponds to the clamping plate No. 2. A forward and reverse motor is provided on the upper part of one side of the lifting box, and the output end of the forward and reverse motor is connected to the bidirectional threaded rod.

[0009] Furthermore, rubber pads are provided on the opposite sides of the No. 1 clamping plate and the No. 2 clamping plate, a limiting slide groove is provided on one side of the bottom inner wall of the lifting box, and sliders are provided at the bottom ends of the No. 1 clamping plate and the No. 2 clamping plate, and the two groups of sliders are embedded in the limiting slide groove.

[0010] Furthermore, a shock-absorbing mechanism is arranged at the bottom end of the lifting box, and the shock-absorbing mechanism includes a fixed sleeve, a rebound column, a connecting frame and a support spring. The top of the fixed sleeve is embedded with a rebound column, the bottom end of the rebound column is connected to the connecting frame, and support springs are connected to both sides of the bottom end of the connecting frame. The end of the support spring away from the connecting frame abuts against the inner wall of the bottom end of the fixed sleeve.

[0011] Furthermore, the inner walls on both sides of the fixed sleeve are provided with sliding grooves, and the two ends of the connecting frame are connected with damping blocks, and the damping blocks are embedded in the sliding grooves. The material of the damping blocks is rubber material, and the bottom end of the lifting frame is connected to a base, and the bottom end of the base is arranged with rollers.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the offshore wind turbine hoist that is easy to fix adopts the first clamping plate and the second clamping plate to cooperate with each other to fix the wind turbine, thereby preventing the wind turbine from falling during the lifting process. The specific contents are as follows:

[0013] A bidirectional threaded rod is connected to the upper part of the interior of the lifting box through a bearing, and the threads on the opposite threaded outer walls on both sides of the bidirectional threaded rod are respectively threadedly connected to a clamping plate No. 1 and a clamping plate No. 2, and the No. 1 clamping plate corresponds to the No. 2 clamping plate, and the No. 1 clamping plate and the No. 2 clamping plate cooperate with each other to fix the wind turbine set. A forward and reverse motor is arranged on the upper part of one side of the lifting box, and the output end of the forward and reverse motor is connected to the bidirectional threaded rod, and the forward and reverse motor can drive the bidirectional threaded rod to rotate. When the bidirectional threaded rod rotates, the No. 1 clamping plate and the No. 2 clamping plate will translate in opposite directions to each other due to the opposite threaded connection, thereby clamping and fixing the wind turbine set, thereby avoiding falling during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a hoist for an offshore wind turbine unit that is easy to fix according to the utility model;

[0015] Figure 2 This is a side structural schematic diagram of a hoist for an offshore wind turbine unit that is easy to fix according to the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a hoisting box for an offshore wind turbine unit that is easy to fix;

[0017] Figure 4 The utility model is a schematic structural diagram of a vibration reduction mechanism of a hoist for an offshore wind turbine unit which is easy to fix.

[0018] In the figure: 1. lifting frame; 2. fixed frame; 3. rotating shaft; 4. winding drum; 5. double-headed motor; 6. sling; 7. hook; 8. lifting box; 9. two-way threaded rod; 10. No. 1 clamping plate; 101 No. 2 clamping plate; 11. forward and reverse motor; 12. rubber pad; 13. limiting slide groove; 14. slider; 15. shock absorbing mechanism; 16. fixed sleeve; 17. rebound column; 18. connecting frame; 19. supporting spring; 20. slide groove; 21. damping block; 22. base; 23. roller. Implementation

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4 The utility model provides a technical solution: a hoist for an offshore wind turbine that is easy to fix, comprising a lifting frame 1, a fixing frame 2 and a double-headed motor 5. The top sides of the lifting frame 1 are fixedly connected with the fixing frames 2 by bolts. The fixing frames 2 play the role of fixing the rotating shaft 3. The middle parts of the two sets of fixing frames 2 are connected with the rotating shaft 3 through bearings. The rotating shaft 3 can rotate in the fixing frame 2. The two sets of rotating shafts 3 are on the same straight line. The middle outer wall of the rotating shaft 3 is sleeved with a winding drum 4, and the winding drum 4 can retract and release the sling 6. The double-headed motor 5 is arranged between the two sets of fixing frames 2. The output ends at both ends of the double-headed motor 5 are respectively connected to the rotating shafts 3 on both sides. The double-headed motor 5 can drive the rotating shaft 3 to rotate, thereby driving the winding drum 4 to rotate, and the rotation of the winding drum 4 drives the sling 6 to reel in or release.

[0021] A sling 6 is wound around the middle outer wall of the winding drum 4, and the rotation of the winding drum 4 drives the sling 6 to be wound or released, and the end of the sling 6 away from the winding drum 4 is connected to a lifting box 8 through a hook 7, and a wind turbine can be placed in the lifting box 8 for lifting. The double-headed motor 5 can drive the rotating shaft 3 to rotate, thereby driving the winding drum 4 to rotate. The rotation of the winding drum 4 drives the sling 6 to be wound or released, thereby driving the lifting box 8 to be lifted, thereby driving the wind turbine to be lifted. A bidirectional threaded rod 9 is connected to the upper part of the lifting box 8 through a bearing, and the bidirectional threaded rod 9 can rotate in the lifting box 8.

[0022] The threads of the opposite threaded outer walls on both sides of the bidirectional threaded rod 9 are respectively threadedly connected to a No. 1 clamping plate 10 and a No. 2 clamping plate 101. The No. 1 clamping plate 10 corresponds to the No. 2 clamping plate 101. The No. 1 clamping plate 10 and the No. 2 clamping plate 101 cooperate with each other to fix the wind turbine set. A forward and reverse motor 11 is arranged on the upper part of one side of the lifting box 8. The output end of the forward and reverse motor 11 is connected to the bidirectional threaded rod 9. The forward and reverse motor 11 can drive the bidirectional threaded rod 9 to rotate. When the bidirectional threaded rod 9 rotates, the No. 1 clamping plate 10 and the No. 2 clamping plate 101 will translate in opposite directions to each other due to the opposite threaded connection, thereby clamping and fixing the wind turbine set. In order to avoid falling during the lifting process, rubber pads 12 are provided on the opposite sides of the No. 1 clamping plate 10 and the No. 2 clamping plate 101. The rubber pads 12 increase the friction force on the wind turbine set and prevent the No. 1 clamping plate 10 and the No. 2 clamping plate 101 from damaging the wind turbine set during the clamping and fixing process. A limiting groove 13 is provided on one side of the bottom inner wall of the lifting box 8, and sliders 14 are provided at the bottom ends of the No. 1 clamping plate 10 and the No. 2 clamping plate 101. The two groups of sliders 14 are embedded in the limiting groove 13. The two groups of sliders 14 and the limiting groove 13 play a limiting role in preventing the No. 1 clamping plate 10 and the No. 2 clamping plate 101 from moving in other directions.

[0023] A shock absorbing mechanism 15 is arranged at the bottom end of the lifting box 8. When the lifting box 8 completes the lifting of the wind turbine and then abuts against the lifting frame 1 during the descending process, a certain impact will be generated, causing the lifting box 8 to vibrate. The shock absorbing mechanism 15 has a shock absorbing effect. The shock absorbing mechanism 15 includes a fixed sleeve 16, a rebound column 17, a connecting frame 18 and a support spring 19. The top of the fixed sleeve 16 is embedded with the rebound column 17, the bottom end of the rebound column 17 is connected to the connecting frame 18, and the two sides of the bottom end of the connecting frame 18 are connected to support springs 19. One end of the support spring 19 away from the connecting frame 18 abuts against the inner wall of the bottom end of the fixed sleeve 16. Slide grooves 20 are provided on the inner walls of both sides of the fixed sleeve 16. Damping blocks 21 are connected to both ends of the connecting frame 18. The damping blocks 21 are embedded in the slide grooves 20. The material is rubber. When the lifting box 8 completes the lifting of the wind turbine and then descends, it will generate a certain impact when it abuts against the lifting frame 1, causing the lifting box 8 to vibrate. The support spring 19 plays a shock-absorbing and buffering role. After the shock absorption, the support spring 19 drives the connecting frame 18 and thus drives the rebound column 17 to rebound upward. The damping blocks 21 at both ends of the connecting frame 18 and the wall of the slide groove 20 in the fixed sleeve 16 generate a certain resistance to suppress the vibration of the support spring 19 when it rebounds after shock absorption, thereby achieving a shock-absorbing effect, thereby improving the service life of the device. The bottom end of the lifting frame 1 is connected to a base 22. The base 22 lifts the stability of the device. Rollers 23 are arranged at the bottom end of the base 22. The rollers 23 are provided with locks to prevent the device from moving at will. The rollers 23 make the hoist easy to move.

[0024] Working principle: When using a hoist for offshore wind turbines that is easy to fix, first place the wind turbine to be lifted in the lifting box 8, start the forward and reverse motors 11, and when the bidirectional threaded rod 9 rotates, the No. 1 clamping plate 10 and the No. 2 clamping plate 101 will translate in opposite directions to each other due to the opposite threaded connection, thereby clamping and fixing the wind turbine to avoid falling during the lifting process. The No. 1 clamping plate 10 and the No. 2 clamping plate 101 are both provided with rubber pads 12 on the opposite sides. The rubber pads 12 increase the friction force on the wind turbine and prevent the No. 1 clamping plate 10 and the No. 2 clamping plate 101 from damaging the wind turbine during the clamping and fixing process. The two sets of sliders 14 and the limiting slide grooves 13 play a limiting role to prevent the No. 1 clamping plate 10 and the No. 2 clamping plate 101 from moving in other directions. After clamping and fixing, start the double-headed motor 5. The double-headed motor 5 can drive the rotating shaft 3 to rotate, thereby driving the winding drum 4 to rotate. The rotation of the winding drum 4 drives the sling 6 to reel in or release, thereby driving the lifting box 8 to lift, thereby driving the wind turbine to lift. When the lifting box 8 completes the lifting of the wind turbine and then contacts with the lifting frame 1 during the descending process, it will generate a certain impact, causing the lifting box 8 to vibrate. The supporting spring 19 plays a shock-absorbing and buffering role. After the shock absorption, the supporting spring 19 drives the connecting frame 18 to drive the rebound column 17 to rebound upward. The damping blocks 21 at both ends of the connecting frame 18 rub against the wall of the slide groove 20 in the fixed sleeve 16 to generate a certain resistance to suppress the vibration of the supporting spring 19 when it rebounds after shock absorption, thereby achieving a shock-absorbing effect, thereby improving the service life of the device. The base 22 improves the stability of the device, and the roller 23 makes the hoist easy to move.

Claims

1. A hoist for an offshore wind turbine generator set that is easy to fix, comprising a hoist frame (1), a fixing frame (2) and a double-headed motor (5), characterized in that: Both sides of the top of the lifting frame (1) are fixedly connected to the fixing frames (2) by bolts, and the middle parts of the two groups of the fixing frames (2) are connected to the rotating shafts (3) by bearings. The two groups of the rotating shafts (3) are located on the same straight line, and the middle outer wall of the rotating shaft (3) is sleeved with a winding drum (4). The double-headed motor (5) is arranged between the two groups of the fixing frames (2), and the output ends of the double-headed motor (5) are respectively connected to the rotating shafts (3) on both sides.

2. The offshore wind turbine hoist that is easy to fix according to claim 1 is characterized in that: A sling (6) is wound around the middle outer wall of the winding drum (4); one end of the sling (6) away from the winding drum (4) is connected to a lifting box (8) via a hook (7); and a bidirectional threaded rod (9) is connected to the upper part of the lifting box (8) via a bearing.

3. The offshore wind turbine hoist that is easy to fix according to claim 2 is characterized in that: The opposite threaded outer walls on both sides of the bidirectional threaded rod (9) are respectively threadedly connected to a first clamping plate (10) and a second clamping plate (101), and the first clamping plate (10) corresponds to the second clamping plate (101). A forward and reverse motor (11) is arranged on an upper part of one side of the lifting box (8), and the output end of the forward and reverse motor (11) is connected to the bidirectional threaded rod (9).

4. The offshore wind turbine hoist that is easy to fix according to claim 3 is characterized in that: A rubber pad (12) is provided on one side of the first clamping plate (10) and the second clamping plate (101) opposite to each other, a limiting slide groove (13) is provided on one side of the bottom inner wall of the lifting box (8), and a slider (14) is provided at the bottom end of the first clamping plate (10) and the second clamping plate (101), and the two groups of sliders (14) are both embedded in the limiting slide groove (13).

5. The offshore wind turbine hoist that is easy to fix according to claim 2 is characterized in that: A shock absorbing mechanism (15) is arranged at the bottom end of the lifting box (8), and the shock absorbing mechanism (15) includes a fixed sleeve (16), a rebound column (17), a connecting frame (18) and a support spring (19). The top of the fixed sleeve (16) is embedded with the rebound column (17), the bottom end of the rebound column (17) is connected to the connecting frame (18), and the two sides of the bottom end of the connecting frame (18) are connected to support springs (19), and the end of the support spring (19) away from the connecting frame (18) is in contact with the inner wall of the bottom end of the fixed sleeve (16).

6. The offshore wind turbine hoist that is easy to fix according to claim 5 is characterized in that: The inner walls on both sides of the fixed sleeve (16) are provided with sliding grooves (20), and the two ends of the connecting frame (18) are connected to damping blocks (21), and the damping blocks (21) are embedded in the sliding grooves (20). The material of the damping blocks (21) is rubber material. The bottom end of the lifting frame (1) is connected to a base (22), and the bottom end of the base (22) is arranged with rollers (23).

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