Lifting device for tower drum of wind driven generator

Abstract

The utility model discloses a lifting device for a tower drum of a wind driven generator, which comprises a main body, a tower drum and a lifting appliance are arranged in the main body, a lifting hook is arranged at the top of the lifting appliance, an anti-dropping frame is arranged in the lifting hook, an upper lifting arm and a lower lifting arm are arranged in the lifting appliance, and a limiting block is arranged on the lower lifting arm. The tower drum is inserted in the middle of the lifting appliance and moves to the inner side of the lower lifting arm along the outer wall of the upper lifting arm, when an inner ring layer of the tower drum crosses the limiting block, the lifting hook is pulled upwards, the tower drum falls on the limiting block, the inner ring layer is located on the lower lifting arm, then a bolt is inserted after a threaded hole of the tower drum is aligned with a through hole of the lifting appliance, and the tower drum is lifted up. The hanging ring abuts against the hook to enable the locking block to rotate clockwise based on the pin shaft, the hanging ring crosses the hook, the hook reversely buckles the hanging ring and the limiting block reversely buckles the inner ring layer under the gravity factor of the locking block to play a fixing role, the tower is fixed through the plug pin, the situation that the tower rotates at the position of the lower hanging beam is avoided, the tower is prevented from being damaged, and falling caused by balance losing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a tower lifting device for a wind turbine generator. Background Art

[0002] Wind turbines are electrical equipment that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. Wind turbines are generally composed of wind rotors, generators, directional controllers, towers, towers, speed limit safety mechanisms, and energy storage devices. The tower is also called a wind power tower. The wind power tower is the tower pole of wind power generation. It mainly plays a supporting role in the wind turbine generator set and absorbs the vibration of the unit. The inner walls of the two ends of the existing tower are provided with inner ring layers, and a number of regularly arranged threaded holes are opened on the inner ring layers. When adjacent towers are docked, they are fastened through the threaded holes on the inner ring layers.

[0003] For example, a Chinese patent discloses a wind turbine tower section lifting tool [application number: 201621058193.7], which includes an upper hanging beam, a U-shaped connection, a lower hanging beam and a lifting lug. The upper hanging beam and the lower hanging beam are parallel to each other, and the upper hanging beam and the lower hanging beam form a whole through the U-shaped connection. Two lifting lugs are arranged on the upper hanging beam. Although the lower end surface of the upper hanging beam and the upper end surface of the lower hanging beam are arc surfaces in this scheme, it is easier to insert the section when lifting the tower section. In addition, even if the section is accidentally touched, it is not easy to scratch the section steel plate. That is, it is convenient to lift, and it can effectively avoid bumps and scratches. However, in this solution, the tower is inserted between the upper and lower hanging beams. When lifting, the inner wall of the tower sits on the lower hanging beam. The tower is in a suspended state at this time, and its center of gravity is located below the lifting tool. Since there is no corresponding fixing equipment in the lifting tool, the tower rotates at the lower hanging beam, which will not only damage the tower, but may also lose balance and fall off in special circumstances. Utility Model Content

[0004] The utility model aims to provide a wind turbine tower hoisting device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind turbine tower lifting device, comprising a main body, a tower and a sling are installed in the main body, a hook is provided on the top of the sling, an anti-slip frame is installed in the hook, an upper hanging arm and a lower hanging arm are provided in the sling, a limiting block is provided on the lower hanging arm, a groove is provided on one side of the sling, a bending block is installed in the anti-slip frame, a counterweight rod is installed at one end of the anti-slip frame, a cross bar is installed at the other end of the anti-slip frame, a latch passes through the groove, a lifting ring is installed at one end of the latch, a base is installed on the inner wall of the groove, the base is respectively provided with a horizontal groove and a vertical groove, a locking block is provided in the vertical groove, a hook is installed at one end of the locking block, and a pulling block is installed on the same side of the hook as the locking block.

[0006] Preferably, the upper boom and the lower boom are spaced apart, and the sling and the hook are connected by a steel cable.

[0007] Preferably, the upper outer wall of the limit block is arranged to be arc-shaped, and a protrusion with an arc-shaped outer wall is arranged on the outer wall of the lower suspension arm, and the protrusion is located on the left side of the limit block.

[0008] Preferably, the bending blocks are symmetrically arranged, and connecting seats are provided on the bending parts of the bending blocks and the inner walls of the hooks. The bending blocks and the hooks are rotatably connected via a pin shaft passing through the connecting seats.

[0009] Preferably, the bending block is divided into a long rod and a short rod, the long rod is located outside the hook, and the short rod is located inside the hook, and the weight of the counterweight rod is greater than that of the cross rod.

[0010] Preferably, the hanger is provided with a through hole at the location where the pin passes through, and the through hole is located below the base.

[0011] Preferably, the transverse groove and the vertical groove are arranged perpendicular to each other, and the transverse groove and the vertical groove respectively penetrate the outer wall of the base.

[0012] Preferably, the pulling block is located on the upper side of the base, the hook is located in the horizontal slot, a pin is provided at the bottom of the vertical slot, and the locking block is rotatably installed inside the vertical slot via the pin.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model inserts the tower in the middle of the hoist and allows the tower to move along the outer wall of the upper boom to the inner side of the lower boom. When the inner ring layer of the tower passes over the limit block, the hook is pulled upward, and the tower falls on the limit block. The inner ring layer is seated on the lower boom. Then, the threaded hole of the tower and the through hole of the hoist are aligned and the pin is inserted. The lifting ring is pressed against the hook to allow the locking block to rotate clockwise based on the pin shaft. The lifting ring passes over the hook, and the locking block is fixed by the hook's own gravity factor. The lifting ring and the limit block are fixed by the inner ring layer. The tower is fixed by the pin to prevent the tower from rotating at the lower hanging beam, thereby preventing damage to the tower and preventing it from losing balance and falling off.

[0015] 2. The utility model facilitates installation and disassembly by passing the latch through a lifting ring at one end. At the same time, the anti-slip frame is different from the ordinary anti-slip design. When disassembling the steel cable on the hook, it is only necessary to lift the counterweight rod upwards, which is simple to operate and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the sling in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the anti-drop frame in the utility model;

[0019] Figure 4 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0020] Figure 5 It is a structural schematic diagram of the latch in the utility model;

[0021] Figure 6 It is a structural schematic diagram of the base in the utility model;

[0022] Figure 7 It is a structural schematic diagram of the locking block in the utility model.

[0023] In the figure: 1. main body; 2. tower; 3. lifting device; 31. upper lifting arm; 32. lower lifting arm; 33. limit block; 34. groove; 4. hook; 5. anti-slip frame; 51. bending block; 52. counterweight rod; 53. cross bar; 6. latch; 61. lifting ring; 7. base; 71. horizontal groove; 72. vertical groove; 8. locking block; 81. hook; 82. pull block. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-7 The utility model provides a technical solution: a wind turbine tower lifting device, comprising a main body 1, a tower 2 and a hanger 3 are installed in the main body 1, a hook 4 is provided on the top of the hanger 3, an anti-slip frame 5 is installed in the hook 4, an upper hanging arm 31 and a lower hanging arm 32 are provided in the hanger 3, a limit block 33 is provided on the lower hanging arm 32, a groove 34 is provided on one side of the hanger 3, a bending block 51 is installed in the anti-slip frame 5, a counterweight rod 52 is installed at one end of the anti-slip frame 5, and a cross bar 53 is installed at the other end of the anti-slip frame 5, a latch 6 passes through the groove 34, a lifting ring 61 is installed at one end of the latch 6, a base 7 is installed on the inner wall of the groove 34, the base 7 is respectively provided with a horizontal groove 71 and a vertical groove 72, a locking block 8 is arranged in the vertical groove 72, a hook 81 is installed at one end of the locking block 8, and a pull block 82 is installed on the same side of the hook 81 of the locking block 8.

[0026] The upper suspension arm 31 and the lower suspension arm 32 are arranged at intervals, and the sling 3 and the hook 4 are connected by a steel cable.

[0027] The upper outer wall of the limit block 33 is arranged in an arc shape, and a convex block with an arc-shaped outer wall is arranged on the outer wall of the lower suspension arm 32 , and the convex block is located on the left side of the limit block 33 .

[0028] The bending block 51 is symmetrically arranged, and a connecting seat is provided at the bending part of the bending block 51 and on the inner wall of the hook 4. The bending block 51 and the hook 4 are rotatably connected by a pin shaft passing through the connecting seat. The bending block 51 is divided into a long rod and a short rod, the long rod is located on the outside of the hook 4, and the short rod is located on the inside of the hook 4. The weight of the counterweight rod 52 is greater than that of the cross rod 53. The gravity on the long rod side of the bending block 51 is greater than that on the short rod side. The anti-slip frame 5 is rotatably installed on the hook 4. According to the principle of lever, the long rod side will make the anti-slip frame 5 rotate clockwise, so that one end of the cross rod 53 always presses against the inner wall of the hook 4. At the same time, the anti-slip frame 5 is installed here, and the length of the cross rod 53 itself is greater than the inner diameter of the hook 4, and it will not flip to the outside of the hook 4.

[0029] The hanger 3 is provided with a through hole at the position where the latch pin 6 passes through, and the through hole is located below the base 7 .

[0030] The transverse groove 71 and the vertical groove 72 are arranged perpendicular to each other, and the transverse groove 71 and the vertical groove 72 respectively penetrate the outer wall of the base 7.

[0031] The pull block 82 is located on the upper side of the base 7 , the hook 81 is located in the horizontal slot 71 , a pin is provided at the bottom of the vertical slot 72 , and the lock block 8 is rotatably installed in the vertical slot 72 via the pin.

[0032] Working principle: insert the tower 2 between the upper boom 31 and the lower boom 32, and move the tower 2 along the outer wall of the upper boom 31 to the inner side of the lower boom 32. When the inner ring layer of the tower 2 passes the limit block 33, the hanger 3 is pulled upward as a whole through the hook 4. The inner wall of the tower 2 falls on the limit block 33, and the inner ring layer of the tower 2 sits on the arc-shaped convex block of the lower boom 32. Then align the threaded hole of the tower 2 with the through hole on the hanger 3, insert the pin 6, and align the ring 61 with the horizontal groove 71. When the locking block 8 is swung in, the lifting ring 61 is pressed against the hook 81, and the locking block 8 is rotated clockwise based on the pin shaft. The lifting ring 61 passes over the hook 81, and the hook 81 is buckled against the lifting ring 61 by the gravity of the locking block 8, which plays a fixing role. When disassembling, the pulling block 82 is lifted upward, and the lifting ring 61 can be directly pulled out. When using the anti-slip frame 5, the counterweight rod 52 is lifted upward, and the anti-slip frame 5 is rotated counterclockwise, and the cross bar 53 moves inward, and the lifting ring 61 can be disassembled normally. Otherwise, one end of the cross bar 53 always presses against the inner wall of the hook 4.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine tower hoisting device, comprising a main body (1), characterized in that: The main body (1) is provided with a tower (2) and a sling (3); a hook (4) is provided on the top of the sling (3); an anti-slip frame (5) is provided in the hook (4); an upper jib (31) and a lower jib (32) are provided in the sling (3); a limit block (33) is provided on the lower jib (32); a groove (34) is provided on one side of the sling (3); a bending block (51) is provided in the anti-slip frame (5); and a counterweight rod (52) is provided at one end of the anti-slip frame (5). The other end of the anti-slip frame (5) is provided with a cross bar (53), the groove (34) is penetrated by a latch (6), one end of the latch (6) is provided with a lifting ring (61), the inner wall of the groove (34) is provided with a base (7), the base (7) is provided with a horizontal groove (71) and a vertical groove (72), a locking block (8) is provided in the vertical groove (72), one end of the locking block (8) is provided with a hook (81), and the locking block (8) is provided with a pull block (82) on the same side of the hook (81).

2. A wind turbine tower lifting device according to claim 1, characterized in that: The upper suspension arm (31) and the lower suspension arm (32) are arranged at intervals, and the suspension device (3) and the suspension hook (4) are connected by a steel cable.

3. A wind turbine tower lifting device according to claim 2, characterized in that: The upper outer wall of the limit block (33) is arranged in an arc shape, and a convex block with an arc-shaped outer wall is arranged on the outer wall of the lower suspension arm (32), and the convex block is located on the left side of the limit block (33).

4. A wind turbine tower hoisting device according to claim 3, characterized in that: The bending blocks (51) are symmetrically arranged, and a connecting seat is provided at the bending portion of the bending block (51) and on the inner wall of the hook (4). The bending block (51) and the hook (4) are rotatably connected via a pin shaft passing through the connecting seat.

5. A wind turbine tower hoisting device according to claim 4, characterized in that: The bending block (51) is divided into a long rod and a short rod, the long rod is located outside the hook (4), and the short rod is located inside the hook (4), and the weight of the counterweight rod (52) is greater than that of the cross rod (53).

6. A wind turbine tower hoisting device according to claim 5, characterized in that: The hanger (3) is provided with a through hole at the position where the latch pin (6) passes through, and the through hole is located below the base (7).

7. A wind turbine tower hoisting device according to claim 6, characterized in that: The transverse groove (71) and the vertical groove (72) are arranged perpendicular to each other, and the transverse groove (71) and the vertical groove (72) respectively penetrate the outer wall of the base (7).

8. A wind turbine tower hoisting device according to claim 7, characterized in that: The pull block (82) is located on the upper side of the base (7), the hook (81) is located in the horizontal groove (71), a pin is provided at the bottom of the vertical groove (72), and the locking block (8) is rotatably installed in the vertical groove (72) through the pin.

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