A hoisting device for wind turbine equipment

Abstract

A hoisting device for wind turbine equipment includes a fixing frame and a clamping device. A tongue-pressing connecting frame is mounted on one end of the fixing frame, and the tongue-pressing connecting frame is internally connected to the tongue-pressing connecting frame via a pull rod device. The clamping device includes a clamping plate and a tongue-pressing mounting frame, and the clamping plate and the tongue-pressing mounting frame cooperate to form an annular structure. The tongue-pressing connecting frame is movably connected to the tongue-pressing mounting frame. A winch is fixedly mounted on the upper surface of the end of the fixing frame away from the tongue-pressing connecting frame, and the output end of the winch is connected to a steel wire rope. A fixed pulley is fixedly mounted on the end of the fixing frame near the tongue-pressing connecting frame. The present invention overcomes the shortcomings of the prior art. Because the distance from the winch to the tongue-pressing connecting frame is greater than the distance from the fixed pulley to the end of the tongue-pressing connecting frame, the downward force of the winch itself can offset the weight of a hoisted object that is several times greater than the winch. In addition, the friction between the tongue-pressing connecting frame and the tower makes the device of the present application capable of hoisting very heavy hoisted objects such as blades.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine hoisting, and in particular to a hoisting device for wind turbine equipment. Background Art

[0002] As the capacity of wind turbines continues to increase, the height of wind turbine towers continues to increase, and it is becoming increasingly difficult to lift and replace large wind turbine components.

[0003] At present, wind turbine hoisting and maintenance are basically completed using large lifting equipment such as truck cranes and crawler cranes. Since the hoisted objects (such as blades, etc.) are very heavy, a large amount of counterweight is usually required to complete the hoisting work, which greatly increases maintenance costs. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a hoisting device for wind turbine equipment. It does not require a large crane, but only uses simple and lightweight ground tooling equipment to achieve the hoisting of large components of the wind turbine, thereby saving expensive crane rental costs and shortening the operation cycle.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The yoke is connected to the yoke at the top and the yoke is connected to the yoke at the bottom by a screw bolt, and the yoke is connected to the yoke at the bottom by a screw bolt.

[0007] Preferably, a plurality of the clamping plates are provided, and two adjacent clamping plates are locked and fixed by a locking bolt.

[0008] Preferably, a pad is fixedly mounted on the lower surface of the fixing frame close to one end of the tower.

[0009] Preferably, the pull rod device includes an upper pull rod, a lower pull rod and an adjusting sleeve, the outer surfaces of the upper pull rod and the lower pull rod are provided with threads, and both ends of the adjusting sleeve are provided with threaded holes. One end of the upper pull rod and one end of the lower pull rod are respectively movably connected to the threaded holes at both ends of the adjusting sleeve, and the other end of the upper pull rod is connected to the tongue pressing mounting frame through a rotating pin, and the other end of the lower pull rod is connected to the tongue pressing bracket through a rotating pin.

[0010] Preferably, a resistance block is fixedly mounted on one end of the fixing frame close to the tower, and the resistance block is located above the tongue-pressing connecting frame and contacts the surface of the tower.

[0011] Preferably, the fixed pulley includes a transverse fixed pulley and a longitudinal fixed pulley, and the transverse fixed pulley cooperates with the longitudinal fixed pulley.

[0012] The present invention provides a hoisting device for wind turbine equipment. The device has the following beneficial effects: through the principle of leverage, when the wire rope receives the upward force of the hoisted object, the end of the tongue will generate a squeezing force on the tower through the pressure plate, and the greater the weight of the hoisted object, the greater the squeezing force of the tongue on the tower, thereby increasing the friction between the tongue and the tower, thereby offsetting the upward force of the hoisted object on the fixed frame. Moreover, because the distance from the hoist to the tongue is much greater than the distance from the fixed pulley to the end of the tongue, through the principle of leverage, with the end of the tongue as the fulcrum, the downward force of the hoist itself can offset the hoisted object that is several times heavier than the hoist. In addition, the friction between the tongue and the tower enables the device of the present application to perform hoisting operations on heavy hoisted objects such as blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the prior art.

[0014] Figure 1 A schematic diagram of the structure of the present invention when in use;

[0015] Figure 2 A schematic structural diagram of the present invention;

[0016] Figure 3 A schematic structural diagram of the fixing frame in the present invention;

[0017] Figure 4 A schematic structural diagram of the holding device in the present invention;

[0018] Description of the numbers in the figure:

[0019] 1. Fixing frame; 2. Clamping device; 3. Tongue-pressing connecting frame; 4. Pull rod device; 41. Upper pull rod; 42. Lower pull rod; 43. Adjusting sleeve; 5. Tongue-pressing; 6. Clamping plate; 7. Tongue-pressing mounting frame; 8. Rotating shaft; 9. Pressure plate; 10. Winch; 11. Wire rope; 12. Fixed pulley; 13. Locking bolt; 14. Spacer; 15. Resistance block; 16. Tower. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0021] Example 1, as Figure 1-4 As shown, a hoisting device for wind turbine equipment includes a fixing frame 1 and a clamping device 2. A tongue-pressing connecting frame 3 is fixedly installed on both sides of one end of the fixing frame 1. The tongue-pressing connecting frame 3 is internally connected to one end of a pull rod device 4 through a rotating pin. The other end of the pull rod device 4 is movably connected to one end of a tongue-pressing 5 through a rotating pin; the clamping device 2 includes a clamping piece 6 and a tongue-pressing mounting frame 7. Both sides of the tongue-pressing mounting frame 7 are connected to the end of the clamping piece 6 through bolts. The clamping piece 6 and the tongue-pressing mounting frame 7 cooperate to form an annular structure. It is covered on the outer surface of the bottom of the tower, the pressure plate 9 on the inner side of the tongue pressing mounting frame 7 is in contact with the surface of the tower, the middle of the tongue pressing frame 5 is movably connected to the two side surfaces of the tongue pressing mounting frame 7 through the rotating shaft 8, and the other end of the tongue pressing frame 5 is in contact with the pressure plate 9; a winch 10 is fixedly installed on the upper surface of the end of the fixed frame 1 away from the tongue pressing frame 5, and the output end of the winch 10 is connected to one end of the wire rope 11, and a fixed pulley 12 is fixedly installed on the end of the fixed frame 1 close to the tongue pressing frame 5, and the other end of the wire rope 11 passes around the fixed pulley 12 and passes through the fixed pulley at the upper end of the tower to be connected to the hoisting object.

[0022] During operation, a fixed pulley can be installed at the root of the blade at the upper end of the tower first, and the end of the wire rope 11 can be passed around the fixed pulley 12 and extended upward, and then passed around the fixed pulley at the root of the blade and changed direction and connected to the hoisted object, and then the winch 10 can be started, so that it can drive the hoisted object through the wire rope 11 to complete the hoisting work. In the present invention, during hoisting, the wire rope 11 will exert an upward force on the fixed frame 1, and then exert an upward force on the pull rod device 4 inside the tongue-pressing connecting frame 3, so that the pull rod device 4 drives the tongue-pressing 5 to rotate, so that through the principle of leverage, the end of the tongue-pressing 5 will generate an extrusion force on the tower through the pressure plate 9, and the greater the gravity of the hoisted object, the greater the extrusion force of the tongue-pressing 5 on the tower. Thereby, the friction between it and the tower is greater, and the upward force of the hoisted object on the fixed frame 1 can be offset. In the present invention, the winch 10 is installed at the end of the fixed frame 1 away from the tower, and the fixed pulley 12 is installed at the end of the fixed frame 1 close to the tower. Therefore, through the principle of leverage, with the end of the tongue 5 as the fulcrum, since the distance from the winch 10 to the tongue 5 is much greater than the distance from the fixed pulley 12 to the end of the tongue 5, the downward force of the winch 10 itself can offset the hoisted object that is several times heavier than the winch 10. In addition, the friction between the tongue 5 and the tower enables the device of this application to realize hoisting operations on heavy hoisted objects such as blades.

[0023] In the second embodiment, based on a further improvement of the first embodiment, a plurality of clamping pieces 6 are provided, and adjacent clamping pieces 6 are locked and fixed by locking bolts 13. Thus, when installing and fixing the clamping pieces 6, the clamping pieces 6 can be adaptively adjusted according to the diameter of the tower. The clamping pieces 6 are tightly wrapped around the outer surface of the tower by the locking bolts 13, thereby increasing the stability of the clamping pieces 6 and the friction between the clamping pieces 6 and the tower. Furthermore, by separating the clamping pieces 6 into multiple pieces, the movement and transportation of the clamping pieces 6 is also facilitated.

[0024] Embodiment 3, based on a further improvement of Embodiment 1, has a pad 14 fixedly mounted on the lower surface of the fixing frame 1 near one end of the tower, and the pad 14 contacts the tower base. Pad 14 prevents the fixing frame 1 from directly contacting the tower base and causing wear when subjected to the upward force of the wire rope 11. Pad 14 also ensures flexible contact with the tower base. Furthermore, when the wire rope 11 is unbalancedly loaded, pad 14 can also provide support, offsetting the unbalanced load on the tongue-pressing connecting frame 3, thereby preventing the fixing frame 1 from tipping over.

[0025] Embodiment 4 is a further improvement based on embodiment 1, in which the pull rod device 4 includes an upper pull rod 41, a lower pull rod 42 and an adjusting sleeve 43. The outer surfaces of the upper pull rod 41 and the lower pull rod 42 are provided with threads, and both ends of the adjusting sleeve 43 are provided with threaded holes. One end of the upper pull rod 41 and one end of the lower pull rod 42 are movably connected in the threaded holes at both ends of the adjusting sleeve 43, respectively. The other end of the upper pull rod 41 is connected to the tongue pressing mounting bracket 7 through a rotating pin, and the other end of the lower pull rod 42 is connected to the tongue pressing 5 through a rotating pin.

[0026] After the clamping device 2 is installed, the adjusting sleeve 43 can be rotated to move the adjacent ends of the upper and lower pull rods 41 and 42 toward the center of the adjusting sleeve 43, thereby driving one end of the tongue 5 to exert an upward force. Through the principle of leverage, the end of the tongue 5 in contact with the pressure plate 9 can first apply a squeezing force to the pressure plate 9, thereby increasing the friction between the pressure plate 9 and the tower, ensuring that the wire rope 11 can lift heavier objects. The downward pulling force of the upper pull rod 41 on the tongue-pressing connecting frame 3 will be balanced by the spacer 14.

[0027] Example 5, based on a further improvement of Example 1, has a stopper 15 fixedly mounted on the end of the fixing frame 1 closest to the tower. Stopper 15 is located above the tongue-pressing connecting frame 3 and contacts the tower surface. Stopper 15 not only constrains the longitudinal movement of fixing frame 1, but also increases the friction between fixing frame 1 and the tower surface, and also protects fixing frame 1 from tilting upward.

[0028] Example 6 is a further improvement of Example 1, in which the fixed pulley 12 includes a transverse fixed pulley and a longitudinal fixed pulley, which cooperate with the longitudinal fixed pulley. The transverse fixed pulley changes the horizontal direction of the wire ropes 11, thereby increasing the spacing between the two wire ropes 11, and the longitudinal fixed pulley changes the vertical direction of the wire ropes 11, thereby pulling them upward.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A hoisting device for wind turbine equipment, characterized in that: It comprises a fixing frame (1) and a holding device (2), wherein a tongue-pressing connecting frame (3) is fixedly mounted on both sides of one end of the fixing frame (1), and the tongue-pressing connecting frame (3) is internally movably connected to one end of a pull rod device (4) via a rotating pin, and the other end of the pull rod device (4) is movably connected to one end of a tongue-pressing (5) via a rotating pin; The clamping device (2) includes a clamping piece (6) and a tongue-pressing mounting frame (7), both side surfaces of the tongue-pressing mounting frame (7) are connected to the end of the clamping piece (6) by bolts, the clamping piece (6) and the tongue-pressing mounting frame (7) cooperate to form an annular structure, and are covered on the outer surface of the tower, the pressure plate (9) on the inner side of the tongue-pressing mounting frame (7) contacts the tower surface, the middle of the tongue-pressing mounting frame (5) is movably connected to the two side surfaces of the tongue-pressing mounting frame (7) by a rotating shaft (8), and the other end of the tongue-pressing mounting frame (5) contacts the pressure plate (9); A hoist (10) is fixedly mounted on the upper surface of one end of the fixing frame (1) away from the tongue pressing (5), the output end of the hoist (10) is connected to one end of a steel wire rope (11), and a fixed pulley (12) is fixedly mounted on the end of the fixing frame (1) close to the tongue pressing (5), and the other end of the steel wire rope (11) passes around the fixed pulley (12) and passes through the fixed pulley at the upper end of the tower to be connected to the hoisted object; A plurality of the clamping pieces (6) are provided, and two adjacent clamping pieces (6) are locked and fixed by means of locking bolts (13); A cushion block (14) is fixedly mounted on the lower surface of the fixing frame (1) close to one end of the tower, and the cushion block (14) is in contact with the tower base.

2. A hoisting device for wind turbine equipment according to claim 1, characterized in that: The pull rod device (4) includes an upper pull rod (41), a lower pull rod (42) and an adjustment sleeve (43). The outer surfaces of the upper pull rod (41) and the lower pull rod (42) are both provided with threads. Both ends of the adjustment sleeve (43) are provided with threaded holes. One end of the upper pull rod (41) and one end of the lower pull rod (42) are movably connected to the threaded holes at both ends of the adjustment sleeve (43). The other end of the upper pull rod (41) is connected to the tongue pressing mounting frame (7) through a rotating pin, and the other end of the lower pull rod (42) is connected to the tongue pressing (5) through a rotating pin.

3. The hoisting device for wind turbine equipment according to claim 1, characterized in that: A resistance block (15) is fixedly mounted on one end of the fixing frame (1) close to the tower, and the resistance block (15) is located above the tongue-pressing connecting frame (3) and in contact with the surface of the tower.

4. The hoisting device for wind turbine equipment according to claim 1, characterized in that: The fixed pulley (12) comprises a transverse fixed pulley and a longitudinal fixed pulley, and the transverse fixed pulley cooperates with the longitudinal fixed pulley.

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