Anti-falling hoisting device for installation of wind generating set

Abstract

The utility model provides an anti-falling hoisting device for mounting a wind generating set. The anti-falling hoisting device comprises a lifting lug, a fixed pulley, a fixed cable, a hanging cable and an anti-falling structure, the number of the lifting lugs is four, and the lifting lugs are annularly arranged around the axis of the tower drum at intervals and connected with the flange face of the tower drum through bolts. The number of the fixed pulleys is two, the two fixed pulleys are both located above the lifting lugs, one fixed pulley corresponds to two lifting lugs, and the other fixed pulley corresponds to two lifting lugs. The number of the fixing cables is two, the two fixing cables penetrate through the two fixed pulleys respectively, and each fixing cable is connected with the two lifting lugs respectively. And the hanging cable is connected with the two fixed pulleys. The number of the anti-disengaging structures is two, the two anti-disengaging structures are connected with the two fixed pulleys in a one-to-one correspondence mode, one anti-disengaging structure is connected with the two lifting lugs, and the other anti-disengaging structure is connected with the two lifting lugs. The anti-falling hoisting device for installing the wind generating set can improve the hoisting safety of the tower drum.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tower hoisting technical field, concretely relates to a kind of anti-falling hoisting device for wind turbine installation. BACKGROUND

[0002] Wind turbine is the system that the kinetic energy of wind is converted into electric energy, and it usually includes a tower for support and a wind wheel arranged at the top of the tower. However, the tower is divided into multiple sections to facilitate long-distance transportation by trailer and subsequent installation or assembly. During the process of tower erection, hoisting equipment is used to lift the tower.

[0003] In the prior art, a hoisting device is usually installed on the flange plate of the tower during the process of lifting the tower by hoisting equipment, so as to be connected with the lifting hook of the hoisting equipment and ensure uniform stress on the tower. The hoisting device usually includes four ring-shaped and spaced hoisting lugs (connected with the flange of the tower) and two cables. Each cable is connected with two adjacent hoisting lugs, and then the cables are hung on the lifting hook of the hoisting equipment. However, the working environment in the wild is harsh. When one of the cables is broken, the corresponding two hoisting lugs are disabled, and only the other two hoisting lugs bear the stress, which is uneven and prone to accidents, poor in safety and practicality. SUMMARY

[0004] The utility model embodiment provides a kind of anti-falling hoisting device for wind turbine installation, to solve the problem of poor safety of hoisting device used in the process of tower hoisting in existing wind turbine.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing an anti-falling hoisting device for wind turbine installation, comprising:

[0006] The hoisting lug is provided with four hoisting lugs, each of which is arranged in a ring shape and spaced around the axis of the tower, and is bolted to the flange surface of the tower. Two adjacent hoisting lugs are defined as first hoisting lugs, and the other two hoisting lugs are defined as second hoisting lugs.

[0007] The fixed pulley is provided with two fixed pulleys, each of which is located above each hoisting lug. One of the fixed pulleys corresponds to two first hoisting lugs, and the other fixed pulley corresponds to two second hoisting lugs.

[0008] The fixed cable is provided with two fixed cables, each of which passes through two fixed pulleys. One end of one of the fixed cables is connected to the first hoisting lug, and the other end of the other fixed cable is connected to the second hoisting lug.

[0009] The hanging cable is connected to the top of two fixed pulleys at both ends, and is used to be hung on the lifting hook of the hoisting equipment.

[0010] There are two anti-slip structures, which are respectively connected to the two fixed pulleys in a one-to-one correspondence, and one of the anti-slip structures is connected to the two first lifting ears, and the other anti-slip structure is connected to the two second lifting ears.

[0011] In a possible implementation, the anti-slip structure includes:

[0012] A support rod, both ends of which are detachably connected to the two first lifting ears or the two second lifting ears; an auxiliary lifting ring is provided at the middle position of the support rod;

[0013] An auxiliary cable has one end connected to the auxiliary lifting ring and the other end fixedly connected to the bottom end of the fixed pulley.

[0014] In a possible implementation manner, the support rod is connected to the first lifting ear or the second lifting ear by bolts.

[0015] In a possible implementation, the support rod is an arc-shaped rod body, and the support rod is bent toward the inside of the tower.

[0016] In a possible implementation, a fixed lifting ring for connecting an auxiliary cable is provided at the bottom end of each fixed pulley.

[0017] In a possible implementation, each of the lifting ears is provided with a flip lifting ring for connecting the fixed cable, the flip lifting ring is rotatably connected to the lifting ear, and the rotation axis is perpendicular to the radial direction of the tower.

[0018] In this implementation, the lifting lugs are bolted to the flange surface of the tower, making it easy to disassemble and assemble. At the same time, their uniform arrangement ensures that the tower is evenly stressed, improving safety to a certain extent. Each fixed cable passes through the corresponding fixed pulley and is connected to two lifting lugs respectively. This structure ensures that the fixed cables on both sides of the fixed pulley are evenly stressed, while adapting to the process of the tower standing upright. The two fixed pulleys are connected by hanging cables, which can ensure that they are connected to the hooks of the lifting equipment. The anti-slip structure can directly connect the corresponding fixed pulley to the two lifting lugs after the corresponding fixed cable is broken, ensuring the normal operation of each lifting lug and the uniform stress on the tower, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the anti-falling hoisting device for installing a wind turbine generator set provided by an embodiment of the present invention; (the dotted line represents the flange portion of the tower)

[0020] Figure 2 A schematic diagram of the combined structure of the lifting lug and support rod of the anti-fall lifting device for installing a wind turbine generator set provided by an embodiment of the present invention;

[0021] Reference Signs List:

[0022] 10, lug; 11, turnover lifting ring; 20, fixed pulley; 21, fixed lifting ring; 30, fixed cable; 40, hanging cable; 50, anti-falling structure; 51, supporting rod; 52, auxiliary cable; 53, auxiliary lifting ring. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0024] Please refer to Figure 1 and Figure 2 , the wind turbine generator installation anti-falling hoisting device provided by the utility model will be described. The wind turbine generator installation anti-falling hoisting device comprises lugs 10, fixed pulleys 20, fixed cables 30, hanging cables 40 and anti-falling structures 50. The lugs 10 are provided in four, each lug 10 is annularly and spacedly arranged around the axis of the tower drum, and is bolted to the flange surface of the tower drum. Two adjacent lugs 10 are set as first lugs 10, and the other two lugs 10 are set as second lugs 10. The fixed pulleys 20 are provided in two, both of the fixed pulleys 20 are located above each lug 10, one of the fixed pulleys 20 corresponds to two first lugs 10, and the other fixed pulley 20 corresponds to two second lugs 10. The fixed cables 30 are provided in two, both of the fixed cables 30 pass through the two fixed pulleys 20, one end of one of the fixed cables 30 is connected to the first lug 10, and the other end of the fixed cable 30 is connected to the second lug 10. The hanging cable 40 is connected to the top end of the two fixed pulleys 20 respectively, and the hanging cable 40 can be hung on the lifting hook of the lifting equipment. The anti-falling structures 50 are provided in two, both of the anti-falling structures 50 are connected to the two fixed pulleys 20 one by one, one of the anti-falling structures 50 is connected to the two first lugs 10, and the other anti-falling structure 50 is connected to the two second lugs 10.

[0025] Compared with the prior art, the lifting device for preventing the wind turbine generator system from falling off is characterized in that the lifting lugs 10 are bolted to the flange surface of the tower, are convenient to disassemble and assemble, are uniformly arranged, can ensure that the tower is uniformly stressed, and improve the safety to a certain extent. Each fixed cable 30 is connected to two lifting lugs 10 after passing through the corresponding fixed pulley 20, the structure can ensure that the fixed cables 30 on both sides of the fixed pulley 20 are uniformly stressed, and can adapt to the process of the tower being erected, and the two fixed pulleys 20 are connected through the hanging cable 40, and can be connected to the lifting hook of the lifting equipment. The anti-falling structure 50 can be connected to the two lifting lugs 10 after the corresponding fixed cable 30 is pulled off, can ensure that the lifting lugs 10 work normally, can ensure that the tower is uniformly stressed, and has high practicability.

[0026] In some embodiments, the anti-falling structure 50 can adopt the structure as shown in Figure 1 . Referring to Figure 1 , the anti-falling structure 50 comprises a support rod 51 and an auxiliary cable 52. The support rod 51 is detachably connected to two first lifting lugs 10 or two second lifting lugs 10 at both ends. An auxiliary lifting ring 53 is arranged at a middle position of the support rod 51. One end of the auxiliary cable 52 is connected to the auxiliary lifting ring 53, and the other end is fixedly connected to the bottom end of the fixed pulley 20.

[0027] The support rod 51 needs to be located above the flange surface and connected to the two lifting lugs 10 at both ends, and can support the two lifting lugs 10 in the transverse direction in structure, because when the fixed cable 30 pulls the two lifting lugs 10, the two lifting lugs 10 will be subjected to a relative horizontal component force, and the support rod 51 can offset the component force to avoid deformation of the flange surface of the tower. The auxiliary cable 52 is connected to the auxiliary lifting lug 10 and the fixed pulley 20, and after the corresponding fixed cable 30 is pulled off, the fixed pulley 20 can directly pull the support rod 51 through the auxiliary cable 52, so that the corresponding two lifting lugs 10 work normally and ensure safety.

[0028] It should be noted that the auxiliary cable 52 is in a relaxed state after installation and before work.

[0029] In some embodiments, the support rod 51 and the lifting lug 10 can adopt the structure as shown in Figure 2 . Referring to Figure 2 , the support rod 51 and the first lifting lug 10 or the second lifting lug 10 are bolted, the structure has large bearing capacity and is convenient to connect.

[0030] It should be noted that the support rod 51 can be installed after the lifting lug 10 is connected to the tower.

[0031] In the embodiment, the lifting lug 10 can have upper and lower clamping pieces, a clamping space is formed between the upper and lower clamping pieces for inserting the flange of the tower drum, and the upper and lower clamping pieces are provided with through holes for facilitating the bolt connection of the lifting lug 10 and the flange. This technology is the prior art, and will not be described here. The length of the upper clamping piece can be extended to ensure the connection with the support rod 51. Please refer to Figure 2 .

[0032] In some embodiments, the support rod 51 can have the structure as shown in Figure 2 . Please refer to Figure 2 . The support rod 51 is an arc-shaped rod body, and the support rod 51 is curved towards the inside of the tower drum.

[0033] When the fixing cable 30 fails, the anti-disengagement structure 50 starts to work, and the support rod 51 is subjected to an upward tension. The arc-shaped rod body can ensure a large tensile effect, avoid the breakage of the support rod 51 under stress, and has high practicability.

[0034] In some embodiments, the fixed pulley 20 can have the structure as shown in Figure 1 . Please refer to Figure 1 . The bottom end of each fixed pulley 20 is provided with a fixed lifting ring 21 for connecting the auxiliary cable 52. The fixed lifting ring 21 can facilitate the connection of the auxiliary cable 52.

[0035] In some embodiments, the lifting lug 10 can have the structure as shown in Figure 2 . Please refer to Figure 2 . Each lifting lug 10 is provided with a turnover lifting ring 11 for connecting the fixing cable 30. The turnover lifting ring 11 is rotationally connected with the lifting lug 10, and the rotation axis is perpendicular to the radial direction of the tower drum.

[0036] The turnover lifting ring 11 can mainly ensure the connection of the fixing cable 30. The rotation of the turnover lifting ring 11 can adapt to the vertical process of the tower drum from the horizontal to the vertical state. The structure is simple, and has high practicability.

[0037] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Anti-falling hoisting device for installing wind turbine generator set, characterized in that: include: There are four lifting ears, each of which is arranged in an annular manner around the axis of the tower and is bolted to the flange surface of the tower; two adjacent lifting ears are set as first lifting ears, and the other two lifting ears are set as second lifting ears; There are two fixed pulleys, both of which are located above the lifting ears, one of which corresponds to the two first lifting ears, and the other corresponds to the two second lifting ears; There are two fixing cables, the two fixing cables respectively passing through the two fixed pulleys, with both ends of one fixing cable connected to the first lifting lug, and both ends of the other fixing cable connected to the second lifting lug; A hanging cable, both ends of which are connected to the top ends of the two fixed pulleys, and the hanging cable is used to be hung on the hook of the lifting equipment; There are two anti-slip structures, which are respectively connected to the two fixed pulleys in a one-to-one correspondence, and one of the anti-slip structures is connected to the two first lifting ears, and the other anti-slip structure is connected to the two second lifting ears.

2. The anti-falling hoisting device for installing a wind turbine generator set according to claim 1, characterized in that: The anti-fall-off structure comprises: A support rod, both ends of which are detachably connected to the two first lifting ears or the two second lifting ears; an auxiliary lifting ring is provided at the middle position of the support rod; An auxiliary cable has one end connected to the auxiliary lifting ring and the other end fixedly connected to the bottom end of the fixed pulley.

3. The anti-falling hoisting device for installing a wind turbine generator set according to claim 2, characterized in that: The support rod is connected to the first lifting ear or the second lifting ear by bolts.

4. The anti-falling hoisting device for installing a wind turbine generator set according to claim 2, characterized in that: The support rod is an arc-shaped rod body, and the support rod is bent toward the inside of the tower.

5. The anti-falling hoisting device for installing a wind turbine generator set according to claim 2, characterized in that: The bottom end of each fixed pulley is provided with a fixed lifting ring for connecting an auxiliary cable.

6. The anti-falling hoisting device for installing a wind turbine generator set according to claim 1, characterized in that: Each of the lifting ears is provided with a flip lifting ring for connecting the fixed cable. The flip lifting ring is rotatably connected to the lifting ear, and the rotation axis is perpendicular to the radial direction of the tower.

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