A tower crane for hoisting wind power and a control method

Abstract

This invention relates to the technical field of hoisting equipment, and in particular to a tower crane and control method for wind power hoisting. The crane includes a tower vertically mounted on a foundation. The tower is characterized by a climbing mechanism and a lifting mechanism. The climbing mechanism is used for climbing the tower, and the lifting mechanism is used for lifting objects from the ground. By using a climbing mechanism to move the lifting mechanism to a higher position on the tower, the tower can be easily utilized, avoiding the cumbersome operation of extending a long boom from the ground to a higher position, saving costs, and simplifying the operation. Furthermore, this hoisting method offers higher safety and hoisting stability, avoiding the center of gravity deviation that occurs with traditional cranes due to their large boom extension distance during hoisting operations, thus preventing the hoisted object from tipping over or falling.

Description

Technical Field

[0001] This invention relates to the technical field of hoisting equipment, and in particular to a tower crane for wind power hoisting and its control method. Background Technology

[0002] In the assembly process of wind power generation equipment, the tower needs to be erected on the foundation first, and then the generator, rotor and other power generation equipment are hoisted to the top of the tower and assembled. This requires frequent use of lifting equipment for high-altitude hoisting work. Traditional lifting equipment mainly uses vehicle-mounted cranes for hoisting work. Due to the high lifting position, the chassis support area of ​​the vehicle is small, which can easily lead to the center of gravity shift. Therefore, the stability of this hoisting method is poor, and the object is prone to swaying during the hoisting process, causing the crane to tip over. Therefore, in order to improve the safety and stability of hoisting work, this invention designs a new type of crane. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a tower crane for wind power installation and a control method thereof.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A tower crane for wind turbine installation includes a tower vertically mounted on a foundation, a climbing mechanism on the tower, and a lifting mechanism on the climbing mechanism. The climbing mechanism is used to climb on the tower, and the lifting mechanism is used to lift objects on the ground.

[0006] The climbing mechanism includes a first clamping roller and two second clamping rollers. The first clamping roller and the second clamping roller are located on the left and right sides of the tower respectively and are in contact with the outer wall of the tower. The two second clamping rollers are located on the same side of the tower and are distributed vertically. A U-shaped frame is provided on the outer side of the second clamping roller, and the second clamping roller is rotatably mounted on the inner wall of the U-shaped frame. The U-shaped frame is inclined, and the two U-shaped frames are inclined in opposite directions. The inclined direction of the lower U-shaped frame end is towards the first clamping roller. Both ends of the first clamping roller are provided with insert plates, and the first clamping roller is rotatably connected to the insert plates. The end of the insert plate is slidably inserted into the lower U-shaped frame end, and the U-shaped frame and the insert plate are fastened together by multiple locking bolts. The upper U-shaped frame end is rotatably mounted on the lower U-shaped frame.

[0007] A spreading mechanism is provided between the two U-shaped frames, which is used to generate a spreading force on the two U-shaped frames.

[0008] Preferably, the climbing mechanism further includes an arc-shaped outer plate, and the spreading mechanism includes a first motor installed on the inner wall of the arc-shaped outer plate. The output end of the first motor is provided with a first worm gear, and a first worm wheel is meshed on the first worm gear. Threaded rods are provided on both the upper and lower sides of the first worm wheel. Two first sliders are vertically slidable on the inner wall of the arc-shaped outer plate. The two threaded rods pass through the two first sliders respectively and are threadedly connected. The first sliders are rotatably connected to the outer wall of the U-shaped frame.

[0009] The two threaded rods have opposite thread directions. A support shaft is rotatably provided on the outer wall of the U-shaped frame on the lower side. The axis of the support shaft is parallel to the axis of the first pressure roller, and the axis of the support shaft is located between the axes of the first pressure roller and the second pressure roller. A second slider is provided at the end of the support shaft. The second slider is laterally slidably installed on the inner wall of the bow-shaped outer plate.

[0010] Preferably, a second motor is provided on the inner side of the bow-shaped outer plate, and a post is provided horizontally on the outer wall of the second motor. The end of the post away from the second motor slides horizontally through the bow-shaped outer plate. A second worm is provided on the lower output end of the second motor. Two second worm wheels mesh on the second worm. A transmission shaft is provided on the second worm wheel. The transmission shaft is connected to the second pressure roller.

[0011] A connecting plate is provided between the drive shaft and the second worm gear. Both ends of the connecting plate are provided with collars. One collar is rotatably fitted onto the second worm gear, and the other collar is rotatably fitted onto the drive shaft.

[0012] Preferably, anti-slip plates are attached to both the front and rear sides of the outer wall of the tower. Two guide plates are inclinedly provided on the outer side wall of the anti-slip plates. The two guide plates are parallel, and the extension lines of the straight lines on the guide plates on the two anti-slip plates intersect and form an inverted V-shape.

[0013] A leaf spring connects the two guide plates on the anti-slip plate. A sleeve is rotatably provided on the upper surface of one of the guide plates. A cylinder is provided on the sleeve. The lower movable end of the cylinder is slidably inserted into the sleeve. A mounting plate is provided on the upper fixed end of the cylinder. The cylinder and the mounting plate are rotatably connected. The mounting plate is fixed on the inner wall of the arc-shaped outer plate.

[0014] Preferably, a dial is rotatably provided on both the front and rear side walls of the bow-shaped outer plate, and a lever is provided on the dial. The lever slides through the dial along the radial direction of the dial. A third slider is provided at the end of the lever away from the dial. The third slider is laterally slidably installed on the outer wall of the bow-shaped outer plate, and a top pressure plate is provided between the two third sliders.

[0015] The inner sidewall of the bow-shaped outer plate is equipped with a third motor on both the front and rear sides, and the output end of the third motor is connected to the dial drive.

[0016] Preferably, a column is vertically provided on the outer wall of the bow-shaped outer plate, and the column rotates on the bow-shaped outer plate. An extension arm is provided horizontally at the top of the column, and a sliding sleeve is slidably fitted on the extension arm. A fourth motor is provided at the bottom of the sliding sleeve, and a spool is provided at the lower output end of the fourth motor. The top of the spool is rotatably mounted on the bottom of the sliding sleeve through a connecting ring. Winding grooves are provided on both the upper and lower sides of the outer circumference of the spool. A lifting rope is wound in each of the two winding grooves. The two lifting ropes have opposite output directions on the winding grooves. A guide wheel is provided on the lifting rope, and the lifting rope is conveyed downward through the guide wheel. The guide wheel is rotatably mounted on the bottom of the sliding sleeve through a support plate. A hook is provided at the bottom of the two lifting ropes.

[0017] Preferably, the top of the extension arm is provided with two first transmission wheels, and a transmission belt is provided between the two first transmission wheels. The bottom of the transmission belt is connected to a sliding sleeve. The extension arm is provided with a fifth motor, and the output end of the fifth motor is connected to one of the first transmission wheels.

[0018] Preferably, a sixth motor is provided on the outer wall of the bow-shaped outer plate, and a second transmission wheel is provided at the output end of the sixth motor. A transmission ring is provided on the second transmission wheel, and the transmission ring is installed on the outer wall of the column.

[0019] The present invention discloses a control method for a tower crane used in wind turbine installation, the specific steps of which are as follows:

[0020] a. Place the bow-shaped outer plate and the insert plate on the ground on the left and right sides of the erected tower, respectively;

[0021] b. Make the second clamping roller fit against the outer wall of the tower, and insert the insert plate into the U-shaped frame and fasten it with bolts;

[0022] c. The first clamping roller and the two second clamping rollers are clamped and fixed to the outer wall of the tower by the spreading mechanism;

[0023] d. The second motor drives the second clamping roller to rotate, thereby causing one first clamping roller and two second clamping rollers to climb and move upward on the tower. At this time, the climbing mechanism drives the lifting mechanism to move upward synchronously to the top of the tower.

[0024] e. Push the top pressure plate from a position away from the tower to the top of the tower, so that the arched outer plate can be hung on the top of the tower through the top pressure plate;

[0025] f. The fourth motor delivers the hoisting rope to the reel, thereby lowering the hook to the ground. The wind turbine is then hung on the hook. The fourth motor is reversed, causing the hoisting rope to retract and wind around the reel, thus hoisting the equipment to a high position.

[0026] g. By adjusting the sliding sleeve on the extension arm through the fifth and sixth motors, the rotation of the column can be adjusted, thereby adjusting the hoisting and conveying position of the equipment;

[0027] h. During the climbing process of the climbing mechanism, the anti-slip plate and the two guide plates on it can play a role in preventing falls.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: by using a climbing method to move the lifting mechanism to a high position on the tower, the tower can be easily borrowed, avoiding the cumbersome operation of extending a long boom from the ground to a high position, saving costs and simplifying the operation. At the same time, by adopting this lifting method, its safety and lifting stability are higher, avoiding the phenomenon of center of gravity deviation during lifting work due to the large extension distance of the traditional boom, thereby preventing the lifted object from tipping over or falling. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 yes Figure 1 Enlarged structural diagram of the internal structure of the central arch-shaped outer plate;

[0032] Figure 3 yes Figure 2 A schematic diagram of the first and second clamping rollers and their structures.

[0033] Figure 4 yes Figure 3 A top-view structural diagram of the explosion;

[0034] Figure 5 yes Figure 4 Enlarged structural schematic diagram of the first and second clamping rollers and their structures.

[0035] Figure 6 yes Figure 4 Enlarged structural diagram of the threaded rod and its upper structure;

[0036] Figure 7 yes Figure 4 Enlarged schematic diagram of the second worm gear and its upper structure;

[0037] Figure 8 yes Figure 2 Enlarged structural diagram of the anti-slip plate and its superstructure;

[0038] Figure 9yes Figure 1 Enlarged schematic diagram of the centerline wheel and its structure;

[0039] In the attached diagram, the following components are marked: 1. Tower; 2. Climbing mechanism; 3. Lifting mechanism; 4. First clamping roller; 5. Second clamping roller; 6. U-shaped frame; 7. Insert plate; 8. Locking bolt; 9. Arched outer plate; 10. First motor; 11. First worm gear; 12. First worm wheel; 13. Threaded rod; 14. First slider; 15. Support shaft; 16. Second slider; 17. Second motor; 18. Insert column; 19. Second worm gear; 20. Second worm wheel; 21. Drive shaft; 22. Connecting plate; 23. Collar; 24. 25. Anti-slip plate; 26. Guide plate; 27. Leaf spring; 28. Sleeve; 29. ​​Cylinder; 20. Mounting plate; 30. Dial; 31. Lever; 32. Third slider; 33. Top pressure plate; 34. Third motor; 35. Column; 36. Extension arm; 37. Sliding sleeve; 38. Fourth motor; 39. Spool; 40. Lifting rope; 41. Guide wheel; 42. Hook; 43. First transmission wheel; 44. Transmission belt; 45. Fifth motor; 46. Sixth motor; 47. Second transmission wheel; 48. Transmission ring. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] In the description of this invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0043] like Figures 1 to 5As shown, a tower crane for wind power installation according to the present invention includes a tower 1 vertically installed on a foundation. The tower 1 is provided with a climbing mechanism 2 and a lifting mechanism 3. The climbing mechanism 2 is used to climb on the tower 1, and the lifting mechanism 3 is used to lift objects on the ground.

[0044] The climbing mechanism 2 includes a first pressure roller 4 and two second pressure rollers 5. The first pressure roller 4 and the second pressure rollers 5 are located on the left and right sides of the tower 1 respectively and are in contact with the outer wall of the tower 1. The two second pressure rollers 5 are located on the same side of the tower 1 and are distributed vertically. A U-shaped frame 6 is provided on the outer side of the second pressure roller 5, and the second pressure roller 5 is rotatably mounted on the inner wall of the U-shaped frame 6. The U-shaped frame 6 is inclined, and the two U-shaped frames 6 are inclined in opposite directions. The inclined direction of the end of the lower U-shaped frame 6 is towards the first pressure roller 4. Both ends of the first pressure roller 4 are provided with insert plates 7, and the first pressure roller 4 is rotatably connected to the insert plates 7. The end of the insert plate 7 is slidably inserted into the end of the lower U-shaped frame 6, and the U-shaped frame 6 and the insert plate 7 are fastened together by multiple locking bolts 8. The end of the upper U-shaped frame 6 is rotatably mounted on the lower U-shaped frame 6.

[0045] A spreading mechanism is provided between the two U-shaped frames 6, which is used to generate a spreading force on the two U-shaped frames 6.

[0046] Specifically, the spreading mechanism and the first clamping roller 4 are located on the left and right sides of the second clamping roller 5. The spreading mechanism exerts a separating force on the two U-shaped frames 6. Since the insert plate 7 is fastened to the lower U-shaped frame 6 by multiple locking bolts 8, when the lower U-shaped frame 6 is subjected to a downward force and the upper U-shaped frame 6 is subjected to an upward force, the upper U-shaped frame 6 can pull the first clamping roller 4 towards the outer wall of the tower 1 through the lower U-shaped frame 6 and the insert plate 7, thereby making one of the first clamping rollers... Both the first clamping roller 4 and the two second clamping rollers 5 can clamp and adhere to the outer wall of the tower 1. When the second clamping roller 5 is rotated, it can drive the U-shaped frame 6, the insert plate 7 and the first clamping roller 4 to move upward synchronously, so that the first clamping roller 4 and the second clamping roller 5 can climb on the tower 1. At this time, the climbing mechanism 2 can drive the lifting mechanism 3 to move to a high position on the tower 1, and then the lifting mechanism 3 can lift the wind power equipment on the ground to a high position, thereby realizing the hoisting work of the wind power equipment.

[0047] By adopting a structure consisting of a first clamping roller 4, two second clamping rollers 5, two U-shaped frames 6, and insert plates 7, the contact strength between the first clamping roller 4, the two second clamping rollers 5, and the tower 1 can be improved, enabling the clamping action on the tower 1 and enhancing the connection strength between the first clamping roller 4, the second clamping rollers 5, and the tower 1.

[0048] By connecting the insert plate 7 and the U-shaped frame 6 with multiple locking bolts 8, the locking bolts 8 can be removed during equipment disassembly, and the insert plate 7 can be pulled away from the U-shaped frame 6, thereby separating the first clamping roller 4 from the second clamping roller 5, making it convenient to disassemble the U-shaped frame 6 and the insert plate 7 and remove them from the tower 1.

[0049] By using a climbing method to move the lifting mechanism 3 to a high position on the tower 1, the tower 1 can be easily used, avoiding the cumbersome operation of extending a long boom from the ground to a high position, saving costs and simplifying the operation. At the same time, by adopting this lifting method, the safety and lifting stability are higher, avoiding the center of gravity deviation caused by the large extension distance of the traditional boom during lifting work, thus preventing the lifted object from tipping over or falling.

[0050] Preferred, such as Figures 1 to 6 As shown, the climbing mechanism 2 also includes an arc-shaped outer plate 9. The spreading mechanism includes a first motor 10 installed on the inner wall of the arc-shaped outer plate 9. The output end of the first motor 10 is provided with a first worm gear 11. A first worm wheel 12 is meshed on the first worm gear 11. Threaded rods 13 are provided on both the upper and lower sides of the first worm wheel 12. Two first sliders 14 are vertically slidable on the inner wall of the arc-shaped outer plate 9. The two threaded rods 13 pass through the two first sliders 14 respectively and are threadedly connected. The first sliders 14 are rotatably connected to the outer wall of the U-shaped frame 6.

[0051] Among them, the threads of the two threaded rods 13 are opposite, and a support shaft 15 is rotatably provided on the outer wall of the U-shaped frame 6 located on the lower side. The axis of the support shaft 15 is parallel to the axis of the first clamping roller 4, and the axis of the support shaft 15 is located between the axis of the first clamping roller 4 and the axis of the second clamping roller 5. A second slider 16 is provided at the end of the support shaft 15, and the second slider 16 is laterally slidably installed on the inner wall of the bow-shaped outer plate 9.

[0052] Specifically, the arc-shaped outer plate 9 supports the first clamping roller 4, the second clamping roller 5, the U-shaped frame 6, and the insert plate 7 through the second slider 16 and the support shaft 15. The first motor 10 drives the first worm gear 11 to rotate, and the first worm gear 11 drives the two threaded rods 13 to rotate synchronously through the first worm wheel 12. Since the threads of the two threaded rods 13 are opposite, the two threaded rods 13 synchronously push the two first sliders 14 to move in opposite directions, and the two first sliders 14 move away from each other. The two first sliders 14 can push the ends of the two U-shaped frames 6 near the first sliders 14 to separate from each other, so that the two second clamping rollers 5 move away from each other. Then, through the guiding action of the U-shaped frame 6 and the insert plate 7, the first clamping roller 4 is pressed against the outer wall of the tower 1, thereby realizing the clamping and locking work of the first clamping roller 4 and the two second clamping rollers 5 on the tower 1.

[0053] When the first slider 14 moves the U-shaped frame 6, the U-shaped frame 6 tilts. At this time, the U-shaped frame 6 can rotate on the support shaft 15, and the U-shaped frame 6 drives the second slider 16 to slide laterally through the support shaft 15.

[0054] Preferred, such as Figure 7 As shown, a second motor 17 is provided on the inner side of the bow-shaped outer plate 9. A post 18 is provided horizontally on the outer wall of the second motor 17. The end of the post 18 away from the second motor 17 slides horizontally through the bow-shaped outer plate 9. A second worm 19 is provided on the lower output end of the second motor 17. Two second worm wheels 20 are meshed on the second worm 19. A transmission shaft 21 is provided on the second worm wheel 20. The transmission shaft 21 is connected to the second pressure roller 5.

[0055] A connecting plate 22 is provided between the drive shaft 21 and the second worm gear 19. Both ends of the connecting plate 22 are provided with collars 23. One collar 23 is rotatably fitted onto the second worm gear 19, and the other collar 23 is rotatably fitted onto the drive shaft 21.

[0056] Specifically, the second motor 17 can drive the second clamping roller 5 to rotate via the second worm 19, the second worm wheel 20, and the transmission shaft 21, thereby enabling the second clamping roller 5 and the first clamping roller 4 to climb on the tower 1. The connecting plate 22 and the collar 23 can connect and fix the transmission shaft 21 and the second worm 19. When the first slider 14 drives the U-shaped frame 6 to tilt, the U-shaped frame 6 will be displaced in the horizontal direction. At this time, the U-shaped frame 6 can push the second worm 19 and the second motor 17 to move laterally via the transmission shaft 21, the connecting plate 22, and the collar 23. The second motor 17 drives the insert 18 to slide on the arc-shaped outer plate 9, and the insert 18 guides and supports the second motor 17.

[0057] Preferred, such as Figure 8 As shown, anti-slip plates 24 are attached to both the front and rear sides of the outer wall of the tower 1. Two guide plates 25 are inclinedly provided on the outer side wall of the anti-slip plate 24. The two guide plates 25 are parallel, and the extension lines of the straight lines on the guide plates 25 on the two anti-slip plates 24 intersect and form an inverted V-shape.

[0058] A leaf spring 26 is connected between the two guide plates 25 on the anti-slip plate 24. A sleeve 27 is rotatably provided on the upper surface of one of the guide plates 25. A cylinder 28 is provided on the sleeve 27. The lower movable end of the cylinder 28 is slidably inserted into the sleeve 27. A mounting plate 29 is provided on the upper fixed end of the cylinder 28. The cylinder 28 is rotatably connected to the mounting plate 29. The mounting plate 29 is fixed on the inner wall of the arc-shaped outer plate 9.

[0059] Specifically, in the natural state, the movable end of the cylinder 28 inside the sleeve 27 is separated from the bottom of the inner wall of the sleeve 27. At this time, the leaf spring 26 plays a major pushing role on the two guide plates 25, thereby increasing the distance between the two guide plates 25. Since the guide plates 25 are tilted and the two guide plates 25 are parallel, the two guide plates 25 guide the anti-slip plate 24, causing the anti-slip plate 24 to move in translation. The anti-slip plate 24 can press and stick tightly to the outer wall of the tower 1. The anti-slip plate 24 provides friction and anti-slip treatment for the tower 1, preventing the tower 1 from falling. This plays a safety role for the climbing mechanism 2 and the lifting mechanism 3.

[0060] When the climbing mechanism 2 moves upward on the tower 1, the anti-slip plate 24 is only subject to the elastic force of the leaf spring 26, and the guide plate 25 is tilted. Therefore, the arc-shaped outer plate 9 can pull the anti-slip plate 24 to move upward smoothly on the tower 1. When the first clamping roller 4 and the second clamping roller 5 fail to effectively clamp the tower 1, causing the climbing mechanism 2 and the lifting mechanism 3 to fall, the friction force between the tower 1 and the anti-slip plate 24 is vertically upward, and the guide plate 25 is tilted. Therefore, the anti-slip plate 24 will have an upward movement tendency due to the friction force. As the guide plate 25 is tilted, when the anti-slip plate 24 moves upward relative to the arc-shaped outer plate 9, the guide plate 25 rotates, and the guide plate 25 exerts a pushing force on the anti-slip plate 24 towards the tower 1. Therefore, the guide plate 25 can provide a greater pushing force for the anti-slip plate 24, and the friction between the anti-slip plate 24 and the tower 1 increases, thereby stopping the anti-slip plate 24 from sliding on the tower 1. This achieves the locking and securing function.

[0061] When the climbing mechanism 2 needs to be disassembled, the cylinder 28 extends, and the movable end of the cylinder 28 slides inside the sleeve 27 and contacts the bottom of the inner wall of the sleeve 27. At this time, the cylinder 28 exerts a downward force on the sleeve 27, and the sleeve 27 exerts a downward force on the guide plate 25, thereby separating the anti-slip plate 24 from the tower 1. By adopting the structure of cylinder 28 and sleeve 27, the movable end of the cylinder 28 can be separated from the bottom of the inner wall of the sleeve 27 during normal operation, and the cylinder 28 is in an unloaded state. When the climbing mechanism 2 needs to be disassembled, the cylinder 28 extends and contacts the bottom of the inner wall of the sleeve 27. At this time, the cylinder 28 exerts a force on the guide plate 25 through the sleeve 27.

[0062] Preferred, such as Figures 1 to 2 As shown, a dial 30 is rotatably provided on the front and rear side walls of the bow-shaped outer plate 9. A lever 31 is provided on the dial 30. The lever 31 slides through the dial 30 along the radial direction of the dial 30. A third slider 32 is provided at the end of the lever 31 away from the dial 30. The third slider 32 is laterally slidably installed on the outer wall of the bow-shaped outer plate 9. A top pressure plate 33 is provided between the two third sliders 32.

[0063] The inner sidewall of the bow-shaped outer plate 9 is equipped with a third motor 34 on both the front and rear sides, and the output end of the third motor 34 is connected to the dial 30 for transmission.

[0064] Specifically, the third motor 34 can drive the dial 30 to rotate, thereby moving the third slider 32 laterally via the lever 31. The third slider 32 drives the top pressure plate 33 to move laterally. When the climbing mechanism 2 moves to the top of the tower 1, it pushes the top pressure plate 33 laterally to the top of the tower 1 and makes them contact each other. At this time, the climbing mechanism 2 is hung on the top of the tower 1 through the top pressure plate 33, thereby realizing the locking and hanging work and improving the firmness and stability of the climbing mechanism 2 on the tower 1.

[0065] Preferred, such as Figure 1 and Figure 9 As shown, a column 35 is vertically provided on the outer wall of the bow-shaped outer plate 9, and the column 35 rotates on the bow-shaped outer plate 9. An extension arm 36 is provided horizontally at the top of the column 35, and a sliding sleeve 37 is slidably sleeved on the extension arm 36. A fourth motor 38 is provided at the bottom of the sliding sleeve 37. A spool 39 is provided at the lower output end of the fourth motor 38, and the top of the spool 39 is rotatably mounted on the bottom of the sliding sleeve 37 through a connecting ring. Winding grooves are provided on the upper and lower sides of the outer circumference of the spool 39. A hanging rope 40 is wound in each of the two winding grooves. The output directions of the two hanging ropes 40 on the winding grooves are opposite. A guide wheel 41 is provided on the hanging rope 40, and the hanging rope 40 is conveyed downward through the guide wheel 41. The guide wheel 41 is rotatably mounted on the bottom of the sliding sleeve 37 through a support plate. A hook 42 is provided at the bottom of the two hanging ropes 40.

[0066] Specifically, the spool 39 and the lifting rope 40 are respectively installed at the bottom of the sliding sleeve 37 via a connecting ring and a support plate. When the fourth motor 38 is running, the fourth motor 38 can drive the spool 39 to rotate. Since the output directions of the two lifting ropes 40 on the winding groove are opposite, the rotation of the spool 39 can drive the two lifting ropes 40 to be wound synchronously in the two winding grooves or output synchronously from the two winding grooves. The guide wheel 41 can support and guide the lifting ropes 40. The two lifting ropes 40 can synchronously drive the hook 42 to move up and down, thereby lifting the wind power equipment on the ground through the hook 42.

[0067] Since the sliding sleeve 37 can slide on the extension arm 36, the horizontal conveying position of the wind turbine can be adjusted, and since the column 35 can rotate on the arc-shaped outer plate 9, the conveying direction of the wind turbine can be adjusted.

[0068] Preferred, such as Figure 1 As shown, the top of the extension arm 36 is rotatably provided with two first transmission wheels 43, and a transmission belt 44 is provided between the two first transmission wheels 43. The bottom of the transmission belt 44 is connected to the sliding sleeve 37. The extension arm 36 is provided with a fifth motor 45, and the output end of the fifth motor 45 is connected to one of the first transmission wheels 43.

[0069] Specifically, the fifth motor 45 can drive the two first transmission wheels 43 and the fifth motor 45 to run. The bottom of the fifth motor 45 can drive the sliding sleeve 37 to slide on the extension arm 36, thereby providing power to the sliding sleeve 37.

[0070] Preferred, such as Figure 1 As shown, a sixth motor 46 is provided on the outer wall of the bow-shaped outer plate 9. The output end of the sixth motor 46 is provided with a second transmission wheel 47. A transmission ring 48 is provided on the second transmission wheel 47. The transmission ring 48 is installed on the outer wall of the column 35.

[0071] Specifically, the sixth motor 46 can drive the column 35 to rotate through the second transmission wheel 47 and the transmission ring 48.

[0072] The present invention discloses a control method for a tower crane used in wind turbine installation, the specific steps of which are as follows:

[0073] a. Place the bow-shaped outer plate 9 and the insert plate 7 on the ground on the left and right sides of the erected tower 1, respectively;

[0074] b. Make the second clamping roller 5 fit against the outer wall of the tower 1, and insert the insert plate 7 into the U-shaped frame 6 and fasten it with bolts;

[0075] c. The first clamping roller 4 and the two second clamping rollers 5 are clamped and fixed to the outer wall of the tower 1 by the spreading mechanism;

[0076] d. The second motor 17 drives the second clamping roller 5 to rotate, thereby causing one first clamping roller 4 and two second clamping rollers 5 to climb and move upward on the tower 1. At this time, the climbing mechanism 2 drives the lifting mechanism 3 to move upward synchronously to the top of the tower 1.

[0077] e. Push the top pressure plate 33 from a position away from the tower 1 to the top of the tower 1, so that the arc-shaped outer plate 9 is hung on the top of the tower 1 through the top pressure plate 33;

[0078] f. The fourth motor 38 delivers the hoisting rope 40 to the reel 39, thereby lowering the hook 42 to the ground and hanging the wind power equipment on the hook 42. The fourth motor 38 is reversed, and the hoisting rope 40 is wound around the reel 39, thereby hoisting the equipment to a high place.

[0079] g. By adjusting the sliding sleeve 37 on the extension arm 36 through the fifth motor 45 and the sixth motor 46, the column 35 can be rotated, thereby adjusting the hoisting and conveying position of the equipment.

[0080] h. During the climbing process of the climbing mechanism 2, the anti-slip plate 24 and the two guide plates 25 on it can play a role in preventing falls.

[0081] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tower crane for wind turbine installation, comprising a tower (1) vertically mounted on a foundation, characterized in that, The tower (1) is provided with a climbing mechanism (2), and the climbing mechanism (2) is provided with a lifting mechanism (3). The climbing mechanism (2) is used to climb on the tower (1), and the lifting mechanism (3) is used to lift objects on the ground. The climbing mechanism (2) includes a first clamping roller (4) and two second clamping rollers (5). The first clamping roller (4) and the second clamping rollers (5) are located on the left and right sides of the tower (1) and are in contact with the outer wall of the tower (1). The two second clamping rollers (5) are located on the same side of the tower (1) and are distributed vertically. A U-shaped frame (6) is provided on the outer side of the second clamping rollers (5), and the second clamping rollers (5) are rotatably mounted on the inner wall of the U-shaped frame (6). The U-shaped frame (6) is inclined, and the two U-shaped frames (6) are rotatably mounted on the inner wall of the U-shaped frame (6). The inclination direction of 6) is opposite. The inclination direction of the end of the U-shaped frame (6) located on the lower side is towards the first pressure roller (4). Both ends of the first pressure roller (4) are provided with insert plates (7). The first pressure roller (4) is rotatably connected to the insert plates (7). The end of the insert plate (7) is slidably inserted into the end of the U-shaped frame (6) located on the lower side. The U-shaped frame (6) and the insert plate (7) are fastened together by multiple locking bolts (8). The end of the U-shaped frame (6) located on the upper side is rotatably mounted on the U-shaped frame (6) located on the lower side. Among them, a spreading mechanism is provided between the two U-shaped frames (6), and the spreading mechanism is used to generate a spreading force on the two U-shaped frames (6); The climbing mechanism (2) also includes an arc-shaped outer plate (9). The spreading mechanism includes a first motor (10) installed on the inner wall of the arc-shaped outer plate (9). The output end of the first motor (10) is provided with a first worm (11). A first worm wheel (12) is meshed on the first worm (11). Threaded rods (13) are provided on both the upper and lower sides of the first worm wheel (12). Two first sliders (14) are vertically slidably provided on the inner wall of the arc-shaped outer plate (9). The two threaded rods (13) pass through the two first sliders (14) respectively and are threadedly connected. The first sliders (14) are rotatably connected to the outer wall of the U-shaped frame (6). Among them, the threads of the two threaded rods (13) are opposite, and a support shaft (15) is rotatably provided on the outer wall of the U-shaped frame (6) on the lower side. The axis of the support shaft (15) is parallel to the axis of the first pressure roller (4), and the axis of the support shaft (15) is located between the axis of the first pressure roller (4) and the axis of the second pressure roller (5). A second slider (16) is provided at the end of the support shaft (15), and the second slider (16) is laterally slidably installed on the inner wall of the bow-shaped outer plate (9). The inner side of the bow-shaped outer plate (9) is provided with a second motor (17). The outer wall of the second motor (17) is provided with a horizontal insertion post (18). The end of the insertion post (18) away from the second motor (17) slides horizontally through the bow-shaped outer plate (9). The lower output end of the second motor (17) is provided with a second worm (19). Two second worm wheels (20) mesh on the second worm (19). The second worm wheel (20) is provided with a transmission shaft (21). The transmission shaft (21) is connected to the second pressure roller (5) in a transmission connection. A connecting plate (22) is provided between the drive shaft (21) and the second worm (19). Both ends of the connecting plate (22) are provided with collars (23). One collar (23) is rotatably mounted on the second worm (19), and the other collar (23) is rotatably mounted on the drive shaft (21). The spreading mechanism exerts a separating force on the two U-shaped frames (6), so that the first clamping roller (4) and the two second clamping rollers (5) can clamp and adhere to the outer wall of the tower (1). When the second clamping roller (5) is rotated, the second clamping roller (5) can drive the U-shaped frame (6), the insert plate (7) and the first clamping roller (4) to move upward synchronously, so that the first clamping roller (4) and the second clamping roller (5) can climb on the tower (1). The front and rear side walls of the bow-shaped outer plate (9) are rotatably provided with dials (30), and the dials (30) are provided with levers (31). The levers (31) slide through the dials (30) along the radial direction of the dials (30). The end of the levers (31) away from the dials (30) is provided with a third slider (32). The third sliders (32) are laterally slidably installed on the outer wall of the bow-shaped outer plate (9). A top pressure plate (33) is provided between the two third sliders (32). The inner sidewall of the bow-shaped outer plate (9) is provided with a third motor (34) on both the front and rear sides, and the output end of the third motor (34) is connected to the dial (30) for transmission. When the climbing mechanism (2) moves to the top of the tower (1), it pushes the top pressure plate (33) laterally to the top of the tower (1) and makes them contact each other. At this time, the climbing mechanism (2) is hung on the top of the tower (1) through the top pressure plate (33).

2. The tower crane for wind power installation as described in claim 1, characterized in that, A column (35) is vertically provided on the outer wall of the bow-shaped outer plate (9), and the column (35) rotates on the bow-shaped outer plate (9). An extension arm (36) is provided horizontally at the top of the column (35), and a sliding sleeve (37) is slidably fitted on the extension arm (36). A fourth motor (38) is provided at the bottom of the sliding sleeve (37). A spool (39) is provided at the lower output end of the fourth motor (38), and the top of the spool (39) is rotatably installed at the bottom of the sliding sleeve (37) through a connecting ring. A winding groove is provided on both the upper and lower sides of the outer circumference of the spool (39), and a hanging rope (40) is wound in both winding grooves. The output directions of the two hanging ropes (40) on the winding grooves are opposite. A guide wheel (41) is provided on the hanging rope (40), and the hanging rope (40) is conveyed downward through the guide wheel (41). The guide wheel (41) is rotatably installed at the bottom of the sliding sleeve (37) through a support plate. A hook (42) is provided at the bottom of the two hanging ropes (40).

3. A tower crane for wind power installation as described in claim 2, characterized in that, The top of the extension arm (36) is provided with two first transmission wheels (43), and a transmission belt (44) is provided between the two first transmission wheels (43). The bottom of the transmission belt (44) is connected to the sliding sleeve (37). The extension arm (36) is provided with a fifth motor (45), and the output end of the fifth motor (45) is connected to one of the first transmission wheels (43).

4. A tower crane for wind power installation as described in claim 3, characterized in that, The outer wall of the bow-shaped outer plate (9) is provided with a sixth motor (46), the output end of the sixth motor (46) is provided with a second transmission wheel (47), and a transmission ring (48) is provided on the second transmission wheel (47). The transmission ring (48) is installed on the outer wall of the column (35).

5. A control method for a tower crane used for wind turbine installation, applicable to the tower crane used for wind turbine installation as described in claim 1, characterized in that, The specific steps are as follows: a. Place the bow-shaped outer plate (9) and the insert plate (7) on the ground on the left and right sides of the erected tower (1); b. Make the second clamping roller (5) fit against the outer wall of the tower (1), and insert the insert plate (7) into the U-shaped frame (6) and fasten it with bolts; c. The first clamping roller (4) and the two second clamping rollers (5) are clamped and fixed to the outer wall of the tower (1) by the spreading mechanism; d. The second motor (17) drives the second clamping roller (5) to rotate, so that one first clamping roller (4) and two second clamping rollers (5) climb and move upward on the tower (1). At this time, the climbing mechanism (2) drives the lifting mechanism (3) to move upward to the top of the tower (1) in sync. e. Push the top pressure plate (33) from a position away from the tower (1) to the top of the tower (1), thereby hanging the bow-shaped outer plate (9) on the top of the tower (1) through the top pressure plate (33); f. The fourth motor (38) delivers the hoisting rope (40) out of the reel (39), thereby lowering the hook (42) to the ground and hanging the wind power equipment on the hook (42). The fourth motor (38) is reversed, and the hoisting rope (40) contracts and winds around the reel (39), thereby hoisting the equipment to a high place. g. The fifth motor (45) drives the sliding sleeve (37) to slide on the extension arm (36), and the sixth motor (46) drives the column (35) to rotate through the second transmission wheel (47) and transmission ring (48), thereby adjusting the hoisting and conveying position of the equipment.

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