Main-hoisting-free hoisting device for transformer of wind turbine generator

Abstract

The utility model discloses a main-hoisting-free hoisting device for a transformer of a wind turbine generator system, which comprises a hoisting rod supporting seat arranged on a main frame; the suspender is arranged on the suspender supporting seat; the pulley supporting rod is arranged at the end, away from the suspender supporting seat, of the suspender, a pulley is arranged on the pulley supporting rod, and a rope is arranged on the pulley; the hoisting assembly is connected to one end of the rope and used for being connected with a transformer; the lifting assembly is arranged on the main machine frame, and the lifting assembly and the other end of the rope are used for winding or releasing the rope. According to the main-hoisting-free hoisting device for the wind turbine generator transformer, the transformer can be hoisted through the hoisting assembly, the transformer can be more stably hoisted to the designated installation height to be installed, the equipment can replace a conventional large hoisting ship for construction operation, and installation and maintenance of the unit transformer are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind turbines, and more particularly to a main-lift-free hoisting device for a wind turbine transformer. Background Art

[0002] With the rapid development of offshore wind power, offshore wind power is increasingly characterized by larger turbine capacities and more extensive site construction. As wind turbines become larger, transformers are increasingly required for larger transformer capacities and larger cable diameters. The use of electrical overhead installation can effectively reduce turbine costs. Currently, large offshore components are typically handled using conventional large-scale lifting vessels. The transformer is installed on the side shield of the turbine's nacelle. Using large lifting equipment, the entire shield is lifted from the transport vessel to a desired height and connected to the main nacelle via flanges.

[0003] As offshore wind turbines become larger and larger, their overall weight and installation heights continue to increase. Furthermore, the harsh offshore environment presents significant challenges to installation. Transformers, a critical component of wind turbines, are currently assembled using large crane vessels. These lifting processes are difficult to maintain balance and are subject to constraints such as climate, weather, and wave conditions. This increases labor time and the cost of renting large crane vessels.

[0004] In summary, how to reduce the difficulty of hoisting a transformer is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a main-lift-free hoisting device for a wind turbine transformer, which can reduce the difficulty of hoisting the transformer.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A main-lift-free hoisting device for a wind turbine transformer comprises:

[0008] The boom support seat is provided on the main frame;

[0009] A boom, provided on the boom support seat;

[0010] A pulley support rod is provided at one end of the boom away from the boom support seat, the pulley support rod is provided with a pulley, and the pulley is provided with a rope;

[0011] a hoisting assembly connected to one end of the rope, the hoisting assembly being used to connect to the transformer;

[0012] A lifting assembly is provided on the main frame, and the lifting assembly and the other end of the rope are used for winding or releasing the rope.

[0013] Preferably, the lifting assembly includes a sling, a shackle, a locking screw buckle and a universal rotating ring. The sling is an I-shaped structure. There are four of the shackles, the locking screw buckle and the universal rotating ring. The four shackles are respectively arranged at the four corners of the sling. The locking screw buckle is fixedly connected to the shackle, and the universal rotating ring is fixedly connected to the locking screw buckle.

[0014] Preferably, a transformer support rod is provided at the lower end of the transformer, and a lifting lug for docking with the universal rotating lifting ring is provided on the transformer support rod.

[0015] Preferably, the lifting assembly includes a winch frame, a drum and a drive assembly, the drum is rotatably arranged on the winch frame, the rope is fixed to the drum, and the drive assembly is used to drive the drum to rotate.

[0016] Preferably, the pulley support rod is a triangular prism structure, the pulley support rod is rotatably connected to the suspension rod, and the suspension rod is connected to the main bearing seat body lug on the main frame through a fixed cable.

[0017] Preferably, the suspension rods are provided in two pairs, the pulley support rods are rotatably connected to the first pair of suspension rods, and the length of the second pair of suspension rods is longer than that of the first pair of suspension rods.

[0018] Preferably, the main unit is mounted on a tower, and a retractable pulley is further provided on the transformer, and the retractable pulley is arranged toward the tower.

[0019] Preferably, a pair of retractable pulleys are provided, and the retractable pulleys and the transformer are rotatably arranged.

[0020] Preferably, the driving assembly is further provided with a lifting height limiter, and the lifting height limiter is used to control the release length of the rope.

[0021] Preferably, an in-cabin truss is provided on the main frame.

[0022] The utility model provides a main-lift-free hoisting device for a wind turbine transformer, which is achieved by arranging a transformer boom support seat on a main frame, a boom on the boom support seat, a pulley support rod on the side of the boom away from the boom support seat, a pulley on the pulley support rod, a rope on the pulley, and two ends of the rope are respectively connected to a hoisting component and a lifting component. The hoisting component can hoist the transformer, and the lifting component can be used to hoist the transformer and lift the transformer to a specified installation height for installation. The device can replace the construction work of conventional large-scale hoisting ships, and is convenient for the installation and maintenance of the unit transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of the main hoist-free hoisting device for a wind turbine transformer provided by the present invention;

[0025] Figure 2 This is a structural schematic diagram of the wind turbine transformer main hoisting device provided by the utility model from another perspective;

[0026] Figure 3 This is a front view of the main-lift-free hoisting device for a wind turbine transformer provided by the utility model;

[0027] Figure 4 A schematic structural diagram of a transformer and a transformer support rod assembly provided by the present invention;

[0028] Figure 5 This is a structural schematic diagram of the transformer provided by the present invention during the sliding process along the tower.

[0029] Reference numerals:

[0030] 1- boom support base; 2- main frame; 3- boom; 4- pulley support rod; 5- pulley; 6- rope; 7- transformer; 8- sling; 9- shackle; 10- lock turnbuckle; 11- universal rotating lifting ring; 12- transformer support rod; 13- lifting eye; 14- winch frame; 15- drum; 16- fixed cable; 17- main bearing seat body lifting eye; 18- tower; 19- retractable pulley; 20- cabin truss; 21- main bearing seat body. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The core of the utility model is to provide a main-lift-free lifting device for wind turbine transformers, which can replace conventional large-scale lifting ships to lift transformers, thereby facilitating the installation and maintenance of the transformers.

[0033] It should be noted that the directions or positional relationships indicated by “upper”, “lower”, “front”, “back”, etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application.

[0034] The present application provides a main-lift-free hoisting device for a wind turbine transformer, comprising: a boom support 1, a boom 3, a pulley support rod 4, a hoisting assembly, and a lifting assembly;

[0035] Among them, the boom support seat 1 is arranged on the main frame 2;

[0036] The boom 3 is provided on the boom support seat 1;

[0037] The pulley support rod 4 is provided at one end of the boom 3 away from the boom support seat 1, the pulley support rod 4 is provided with a pulley 5, and the pulley 5 is provided with a rope 6;

[0038] The hoisting assembly is connected to one end of the rope 6, and the hoisting assembly is used to connect to the transformer 7;

[0039] The lifting assembly is arranged on the main frame 2 , and the lifting assembly and the other end of the rope 6 are used to reel in or release the rope 6 .

[0040] For details, please refer to the attached Figure 1 With attached Figure 2The jib support seat 1 is fixed to the main bearing seat body 21 and the yaw drive flange on the main frame 2 by bolts. The jib 3 is arranged in the jib support seat 1. The upper end of the jib 3 is provided with a pulley support rod 4, and the pulley support rod 4 is provided with a pulley 5. The outer periphery of the pulley 5 is provided with a rope 6. The two ends of the rope 6 are respectively connected to the lifting assembly and the lifting assembly. The lifting assembly can realize the connection to the transformer 7. The lifting assembly is arranged on the other side of the main frame 2. The rope 6 is pulled by the lifting assembly to lift the lifting assembly and the transformer 7. The loose parts of the equipment tooling required for this device can be lifted by the original auxiliary small crane at the position of the nacelle lifting port and installed with the help of the reserved installation interface in the nacelle. The whole set of tooling meets the needs of manual installation in the nacelle. Only this set of equipment tooling is needed to meet the work needs of lifting and lowering the transformer from the tower top nacelle at a height of more than 100 meters, replacing the construction operation of conventional large lifting ships, which is convenient for the installation and maintenance of the unit transformer.

[0041] Based on the above embodiment, the lifting assembly includes a sling 8, a shackle 9, a locking spiral buckle 10 and a universal rotating ring 11. The sling 8 is an I-shaped structure. There are four shackles 9, four locking spiral buckles 10 and four universal rotating rings 11. The four shackles 9 are respectively arranged at the four corners of the sling 8. The locking spiral buckle 10 is fixedly connected to the shackle 9, and the universal rotating ring 11 is fixedly connected to the locking spiral buckle 10.

[0042] For details, please refer to the attached Figure 1 To the attached Figure 3 The sling 8 is an I-shaped component, and a shackle 9 is provided on the lower side of its four corners. The bottom of each shackle 9 is connected to a lock spiral buckle 10, and the bottom of each lock spiral buckle 10 is connected to a universal rotating ring 11. The connection with the transformer 7 is achieved through four universal rotating rings 11 to maintain the stability of the transformer 7 during the lifting process. In addition, the lock spiral buckle 10 is a U-shaped lock spiral buckle, and the universal rotating ring 11 can rotate around the U-shaped lock spiral buckle to adapt to the lifting ears 13 set in various directions.

[0043] On the basis of the above embodiment, a transformer support rod 12 is provided at the lower end of the transformer 7 , and a lifting lug 13 for docking with the universal rotating lifting ring 11 is provided on the transformer support rod 12 .

[0044] For details, please refer to the attached Figure 4 The lower end of the transformer 7 is fixedly connected to the transformer support rod 12. The length of both sides of the transformer support rod 12 is greater than that of the transformer 7. The upper end surfaces of the two side parts of the transformer support rod 12 are respectively provided with two lifting ears 13. Each lifting ear 13 is corresponding to a universal rotating lifting ring 11. The connection between the two can realize the connection between the lifting assembly and the transformer 7, so as to facilitate the lifting and transportation of the transformer 7.

[0045] On the basis of the above embodiment, the lifting assembly includes a winch frame 14, a drum 15 and a driving assembly. The drum 15 is rotatably arranged on the winch frame 14, the rope 6 is fixed to the drum 15, and the driving assembly is used to drive the drum 15 to rotate.

[0046] Specifically, the hoist assembly consists of a hoist frame 14, a drum 15, and a drive assembly. Initially, all components are disassembled. These components are then assembled inside the nacelle, with the hoist assembly mounted on the yaw drive flange on the opposite side of the boom support 1. The hoist assembly's drum 15 is driven by two symmetrical drive assemblies, typically winches. The number of winches used in actual hoisting operations can be determined based on load capacity.

[0047] Based on the above embodiment, the pulley support rod 4 is a triangular prism structure, and the pulley support rod 4 is rotatably connected to the boom 3. The boom 3 is connected to the main bearing seat lug 17 on the main frame 2 through a fixed cable 16.

[0048] Specifically, the pulley support rod 4 is a frame-like structure composed of the sides of a triangular prism, and the two ends of one side edge of the pulley support rod 4 are rotatably connected to the two suspension rods 3, as shown in the attached figure. Figure 1 With attached Figure 2 As shown, the pulley support rod 4 is designed as a triangular prism structure, which can fully separate the hoisting component from the lifting component. The boom 3 is connected to the main bearing seat body lug 17 on the main frame 2 through a fixed cable 16, which fixes the boom 3 and improves the structural stability.

[0049] On the basis of the above embodiment, two pairs of suspension rods 3 are provided, the pulley support rods 4 are rotatably connected to the first pair of suspension rods 3 , and the length of the second pair of suspension rods 3 is longer than that of the first pair of suspension rods 3 .

[0050] For details, please refer to the attached Figure 3 There are two pairs of booms 3, which are respectively arranged on both sides of the main bearing seat body 21. The pulley support rod 4 is rotatably connected to the first pair of booms 3. The length of the second pair of booms 3 is significantly longer than that of the first pair of booms 3, so that during the lifting process, the pulley support rod 4 can be supported by the second pair of booms 3 after rotation. At this time, the four corners on the two side edges of the pulley support rod 4 are supported by the boom 3, the structure is stable, can maintain stability during the lifting process, and can prevent the pulley support rod 4 from contacting and affecting the main bearing seat body 21.

[0051] On the basis of the above embodiment, the main frame 2 is arranged on the tower 18 , and a retractable pulley 19 is further provided on the transformer 7 , and the retractable pulley 19 is arranged toward the tower 18 .

[0052] Specifically, the main frame 2 is arranged at the top of the tower 18, and a retractable pulley 19 is provided on the side of the transformer 7 facing the tower 18. Since the radius of the tower gradually increases from top to bottom, during the hoisting process of the transformer 7, the transformer 7 will be scratched against the outer wall of the tower 18 due to gravity. Therefore, it is necessary to provide a retractable pulley 19 on the side of the transformer 7 facing the tower 18, so that during the hoisting process, the transformer 7 can roll along the outer wall of the tower 18 through the retractable pulley 19. After the hoisting is completed, the retractable pulley 19 can be retracted to save space.

[0053] On the basis of the above embodiment, a pair of retractable pulleys 19 is provided, and the retractable pulleys 19 and the transformer 7 are rotatably arranged.

[0054] Specifically, two retractable pulleys 19 are provided, and the two retractable pulleys 19 are arranged on the same side of the transformer 7. The two retractable pulleys 19 can greatly reduce the impact of wind speed on the transformer 7 during the sliding process along the tower 18, ensuring that the transformer 7 is more stable during the entire lifting process and improving the lifting efficiency of the transformer 7.

[0055] On the basis of the above embodiment, a lifting height limiter is further provided on the driving assembly, and the lifting height limiter is used to control the release length of the rope 6.

[0056] Specifically, a lifting height limiter can be provided on the winch to control the maximum lowering distance and maximum rising height of the rope 6. Generally speaking, the maximum lower distance of the rope 6 should be equal to the distance from the top of the tower 18 to the bottom of the tower 18, and the maximum rising height of the rope 6 is also the height corresponding to the top of the tower 18 to ensure that the transformer 7 can be installed or disassembled on the surface of the tower 18.

[0057] On the basis of the above embodiment, an in-cabin truss 20 is provided on the main frame 2 .

[0058] Specifically, the cabin truss 20 can be used to give the device a certain amplitude adjustment function. After the transformer 7 is lifted, it can be moved horizontally away from the cabin side cover, and then the transformer 7 can be vertically lowered to the root of the tower 18; the above actions can also be reversed to complete the installation of the transformer 7. The cabin truss 20 can also play a supporting role and assist in supporting the pulley support rod 4.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] The above is a detailed introduction to the main-lift-free hoisting device for wind turbine transformers provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that for ordinary technicians in this technical field, various improvements and modifications can be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A wind turbine transformer main hoisting device, characterized in that: include: A boom support seat (1) is provided on the main frame (2); A boom (3) is provided on the boom support seat (1); A pulley support rod (4) is provided at one end of the boom (3) away from the boom support seat (1); a pulley (5) is provided on the pulley support rod (4); and a rope (6) is provided on the pulley (5); a hoisting assembly connected to one end of the rope (6), the hoisting assembly being used to connect to the transformer (7); A lifting component is provided on the main frame (2), and the lifting component and the other end of the rope (6) are used to reel in or release the rope (6).

2. The wind turbine transformer main hoisting device according to claim 1 is characterized in that: The lifting assembly includes a sling (8), a shackle (9), a locking screw buckle (10) and a universal rotating ring (11). The sling (8) is an I-shaped structure. Four shackles (9), four locking screw buckles (10) and four universal rotating rings (11) are provided. The four shackles (9) are respectively provided at the four corners of the sling (8). The locking screw buckle (10) is fixedly connected to the shackle (9), and the universal rotating ring (11) is fixedly connected to the locking screw buckle (10).

3. The wind turbine transformer main hoisting device according to claim 2 is characterized in that: A transformer support rod (12) is provided at the lower end of the transformer (7), and a lifting lug (13) for docking with the universal rotating lifting ring (11) is provided on the transformer support rod (12).

4. The wind turbine transformer main hoisting device according to claim 3 is characterized in that: The lifting assembly includes a winch frame (14), a drum (15) and a driving assembly. The drum (15) is rotatably arranged on the winch frame (14), the rope (6) is fixed to the drum (15), and the driving assembly is used to drive the drum (15) to rotate.

5. The wind turbine transformer main hoisting device according to claim 4 is characterized in that: The pulley support rod (4) is a triangular prism structure, and the pulley support rod (4) is rotatably connected to the suspension rod (3). The suspension rod (3) is connected to the main bearing seat body lug (17) on the main frame (2) via a fixed cable (16).

6. The wind turbine transformer main hoisting device according to claim 5, characterized in that: The suspension rods (3) are provided in two pairs, the pulley support rods (4) are rotatably connected to the first pair of suspension rods (3), and the second pair of suspension rods (3) are longer than the first pair of suspension rods (3).

7. The wind turbine transformer main hoisting-free installation device according to claim 6, characterized in that: The main frame (2) is arranged on a tower (18), and a retractable pulley (19) is further arranged on the transformer (7), and the retractable pulley (19) is arranged toward the tower (18).

8. The wind turbine transformer main hoisting-free installation device according to claim 7, characterized in that: A pair of retractable pulleys (19) are provided, and the retractable pulleys (19) and the transformer (7) are rotatably arranged.

9. The wind turbine transformer main hoisting-free installation device according to claim 8, characterized in that: The driving assembly is also provided with a lifting height limiter, which is used to control the release length of the rope (6).

10. The wind turbine transformer main hoisting-free installation device according to any one of claims 1 to 9, characterized in that: An in-cabin truss (20) is provided on the main frame (2).

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