Device for replacing gear box component of offshore wind turbine

Abstract

The utility model relates to a device for replacing a gearbox component of an offshore wind turbine, which comprises a portal frame assembly and a skin opening assembly, and the portal frame assembly comprises a reversing component, a portal frame and a traction component; the reversing component is mounted on the portal frame, the portal frame is mounted in a generator cabin, the traction component comprises a rope system, and the rope system crosses the reversing component and is connected with the gearbox component; the skin opening assembly comprises a connecting rod mechanism and a lifting component, the connecting rod mechanism is installed on the lower skin, and the lifting component is connected with the connecting rod mechanism. Compared with the prior art, a lower skin of a cabin of the wind driven generator is opened through the skin opening assembly, and a gearbox component to be replaced is hoisted through the portal frame assembly; the lower skin is only opened during hoisting, so that the operation safety is ensured to the greatest extent, and as the lower skin does not need to be integrally disassembled, the requirement on a ship deck is reduced, and the application range is wide; and the portal frame assembly adopts a modular design and is convenient to transport into a cabin for installation.

Description

Technical Field

[0001] The utility model relates to wind power generation, in particular to a device for replacing gear box components of an offshore wind power generator. Background Art

[0002] Offshore wind turbines are wind turbines used for offshore wind power generation. The gearbox is a crucial component in wind turbines. Its primary function is to accelerate the rotation of the rotor shaft to drive the generator to generate electricity. Energy is transmitted through the rotor blades and the main shaft to the gearbox, and finally to the generator. Replacing gearbox components in offshore wind turbines is a complex operation and requires appropriate replacement equipment.

[0003] After searching, authorization publication number CN217051347U discloses a generator replacement device comprising a horizontal adjustment device configured to adjust the horizontal position and horizontal rotational attitude of the generator, and a vertical adjustment device configured to adjust the vertical position and vertical rotational attitude of the generator. This solution allows the generator to be directly lowered from under the nacelle for replacement, but it has high requirements for the aircraft model. If the nacelle cover lacks a lifting hole or there is no available nacelle structure inside the nacelle, this solution cannot be used for replacement.

[0004] Application publication number CN110925149A discloses a method for repairing a wind turbine gearbox from a tower. This solution involves constructing a gantry within the nacelle, using the nacelle cover function of the tooling to lift the upper nacelle cover. A cantilever crane is then used to transfer the gearbox component to be replaced through the gap to the outside of the nacelle, where it is then lowered to the ground. However, this requires a nacelle cover lifting device and a cantilever crane to penetrate the gap between the upper and lower covers and reach the outside of the nacelle, making the operation relatively complex.

[0005] Authorization publication number CN214828450U discloses a gearbox and generator replacement system for an offshore doubly-fed wind turbine. The system comprises a lifting mechanism, a nacelle, and a hoisting assembly, the latter of which is located within the nacelle. The nacelle is provided with a horizontal track structure, a reciprocating carrier mounted on the track structure, and a traveling mechanism mounted on the carrier structure that cooperates with the track structure. A sling is located below the carrier structure, and the lifting mechanism is connected to the sling via a wire rope to pull the sling up and down. However, this system is highly dependent on the center of gravity of the motor, resulting in poor adaptability.

[0006] In summary, how to design a device for replacing gearbox components at sea that has a wide range of applications and is easy to operate is a technical problem that needs to be solved. Utility Model Content

[0007] The purpose of the present invention is to provide a device for replacing gear box components of an offshore wind turbine in order to overcome the defects of the prior art.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] According to one aspect of the utility model, a device for replacing gearbox components of an offshore wind turbine is provided, comprising a gantry assembly and a skin opening assembly, the gantry assembly comprising a reversing component, a gantry and a traction component; the reversing component is mounted on the gantry, the gantry is mounted in a generator nacelle, the traction component comprises a rope system, the rope system spans the reversing component and is connected to the gearbox component to be replaced; the skin opening assembly comprises a connecting rod mechanism and a lifting component, the connecting rod mechanism is mounted on the lower skin of the generator nacelle, the lifting component is mounted in the generator nacelle and is connected to the connecting rod mechanism.

[0010] As a preferred technical solution, the gantry includes columns, support beams, supports and pins; the supports are installed on the generator cabin, the columns include front columns and rear columns, the front columns are installed on the supports through pins, and the rear columns are installed on the generator cabin; the support beams are installed on the columns.

[0011] As a preferred technical solution, the support beam includes a cross beam and a track beam, and there are two front columns and two rear columns; there are two cross beams, and the two ends of one cross beam are respectively mounted on the two front columns, and the two ends of the other cross beam are respectively mounted on the two rear columns; the two ends of the track beam are respectively mounted on the two cross beams.

[0012] As a preferred technical solution, the support beam also includes a reinforcing beam and a connecting beam. There are two reinforcing beams, and the two ends of each reinforcing beam are respectively mounted on the front column and the rear column, and are parallel to the track beam; there are two track beams, and the two ends of the connecting beam are respectively connected to one end of the two track beams mounted on the same crossbeam.

[0013] As a preferred technical solution, the traction component also includes a cable storage winch, a traction machine, a trolley mechanism, a hanging beam and a trolley drive screw; the cable storage winch is installed on the generator cabin, the traction machine is installed on the rear column, the trolley mechanism is installed on the track beam, and the trolley drive screw is installed on the trolley mechanism; the rope is wound around the cable storage winch, one end of which spans the traction machine and the trolley mechanism, and the hanging beam is installed at the end of the rope to connect the gearbox component to be replaced.

[0014] As a preferred technical solution, the reversing component includes a horizontal reversing component, a first vertical reversing component and a second vertical reversing component. The horizontal reversing component and the second vertical reversing component are installed on the support beam, and the first vertical reversing component is installed on the generator cabin and located on the side of the rear column; the rope of the traction component sequentially crosses the first vertical reversing component, the second vertical reversing component and the horizontal reversing component.

[0015] As a preferred technical solution, the generator nacelle is provided with a mounting interface, and the support is detachably connected to the generator nacelle via the mounting interface.

[0016] As a preferred technical solution, the connecting rod mechanism connects the generator nacelle and the generator nacelle lower skin, and includes a plurality of hinges and a plurality of connecting rods detachably connected by the hinges.

[0017] As a preferred technical solution, the connecting rod includes a first connecting rod, a second connecting rod and a third connecting rod, and the hinge includes a hinge shaft, an upper hinge and a lower hinge; the first connecting rod and the lower hinge are installed on the lower skin of the generator cabin, and the upper hinge is installed in the generator cabin and is connected to the lower hinge through a hinge shaft; the two ends of the second connecting rod are respectively connected to the first connecting rod and the third connecting rod through a hinge shaft; the third connecting rod is connected to the lower hinge through a hinge shaft.

[0018] As a preferred technical solution, the reversing component of the gantry assembly and the gantry, as well as the gantry and the generator cabin are all detachably connected.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The utility model opens the lower skin of the wind turbine nacelle through the skin opening assembly, and hoists the gearbox component to be replaced through the gantry assembly. The lower skin is only opened during hoisting, which maximizes the safety of the operation. Since it does not require overall disassembly, the requirements for the ship deck are reduced during offshore operations, making it easy to operate and having a wide range of applications. The gantry assembly has a modular design, which is easy to transport to the nacelle for installation.

[0021] 2) The track beam of the gantry of the utility model can realize the forward and backward movement function of the gearbox component in the engine room, thereby completing the function of directly replacing the gearbox component in the air without the intervention of a lifting vessel, which can significantly reduce the replacement cost;

[0022] 3) The combined use of the cable storage winch and traction machine of the traction component of the utility model enables the lifting mechanism with a rated load of 55KN to be directly installed in the cabin, reducing the installation time and difficulty, and the overall weight does not exceed 1.2 tons;

[0023] 4) The connecting rod mechanism of the utility model connects the generator nacelle and the lower skin of the generator nacelle, and the lower skin is rotated and opened through the cooperation of the connecting rod and the hinge, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a device for replacing gearbox components of an offshore wind turbine according to the present invention;

[0025] Figure 2 This is the front view of the gantry assembly of the utility model;

[0026] Figure 3 This is a top view of the gantry assembly of the utility model;

[0027] Figure 4 This is a left view of the gantry assembly of the utility model;

[0028] Figure 5 This is the main view of the gantry of the utility model;

[0029] Figure 6 This is a top view of the gantry of the utility model;

[0030] Figure 7 This is the left side view of the gantry of the utility model;

[0031] Figure 8 This is a schematic diagram of the utility model's skin opening assembly being installed on the generator nacelle's lower skin;

[0032] Figure 9 This is a schematic diagram of the utility model's skin opening assembly opening the generator nacelle's lower skin;

[0033] The numbers in the figure show:

[0034] 1. Gantry assembly, 101. Cable storage winch, 102. First vertical reversing component, 103. Tractor, 104. Rope system, 105. Trolley mechanism, 106. Lifting beam, 107. Gantry, 1071. Rear column, 1072. Front column, 1073. Crossbeam, 1074. Track beam, 1075. Reinforcement beam, 1076. Left support, 1077. Connecting beam, 1078. Right support, 1079. Pin, 108. Horizontal reversing Components, 109, second vertical reversing component, 110, trolley drive screw, 2, skin opening assembly, 201, first connecting rod, 202, second connecting rod, 203, third connecting rod, 204, upper hinge, 205, lower hinge, 206, first hinge shaft, 207, lifting device, 208, second hinge shaft, 209, third hinge shaft, 210, fourth hinge shaft, 3, generator cabin, 4, gear box, 5, tower, 6, lower skin of generator cabin. DETAILED DESCRIPTION

[0035] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0036] like Figure 1 As shown, the utility model discloses a device for replacing gearbox components of an offshore wind turbine, including a gantry assembly 1 and a skin opening assembly 2. The gantry tooling has a lifting function, and the gearbox 4 components are lifted by the gantry tooling, and the components are lifted from the generator cabin 3 to the lower part. The skin opening tooling is responsible for opening the skin under the gearbox 4, so that the gearbox 4 components can pass through the lower cover of the generator cabin 3 normally and be lowered.

[0037] like Figures 2 to 4 As shown, the gantry assembly 1 includes a reversing component, a gantry 107 and a traction component.

[0038] The reversing components include a horizontal reversing component 108, a first vertical reversing component 102, and a second vertical reversing component 109. The horizontal reversing component 108 is bolted to the middle of a crossbeam 1073 near the cable storage winch. The first vertical reversing component 102 is bolted to a reserved interface in the generator nacelle 3 and is located on the side of a rear column 1071, which is located on the same side as the cable storage winch. The second vertical reversing component 109 is bolted to the same crossbeam 1073 as the horizontal reversing component 108 and is located on the side of the crossbeam 1073 near the first vertical reversing component 102.

[0039] like Figures 5 to 7 As shown, the gantry 107 includes columns, support beams, supports and pin shafts 1079.

[0040] The columns include two front columns 1072 and two rear columns 1071. One end of the front column 1072 is mounted on a support via a pin 1079, while one end of the rear column 1071 is mounted on the generator nacelle 3 via a pin 1079. The support beams include two crossbeams 1073, two track beams 1074, two reinforcement beams 1075, and a connecting beam 1077. The ends of one crossbeam 1073 are mounted on the two front columns 1072, while the ends of the other crossbeam 1073 are mounted on the two rear columns 1071. The ends of the track beam 1074 are mounted on the two crossbeams 1073, and the two track beams 1074 are parallel to each other. The ends of the reinforcement beam 1075 are mounted on the front columns 1072 and the rear columns 1071, and the two reinforcement beams 1075 are parallel to the track beam 1074. The two ends of the connecting beam 1077 are respectively connected to one end of the two track beams 1074 mounted on the same crossbeam 1073. There are two supports, the left support 1076 and the right support 1078, which are installed with bolts to the preset interface in the generator cabin 3. The installation of the gantry 107 requires the various components to be transferred from the bottom of the tower to the inside of the generator cabin 3. First, the left support 1076 and the right support 1078 are installed. The supports and the generator cabin 3 structure are installed with bolts through the preset interface; the two rear columns 1071 and the two front columns 1072 are respectively installed with the generator cabin 3 interface, the left support 1076 and the right support 1078 through the pin 1079; the rest of the structure is connected and installed with bolts, and finally the gantry 107 is formed.

[0041] The traction components include a cable storage winch 101, a traction machine 103, a rope 104, a trolley mechanism 105, a hanging beam 106 and a trolley driving screw 110. The cable storage winch 101 is connected to the reserved interface of the generator cabin 3 by bolts, and there is a certain distance between it and the gantry 107; the traction machine 103 is installed on the interface in the middle of the rear column 1071 by bolts, and the rear column 1071 and the cable storage winch are located on the same side; the trolley mechanism 105 is installed on the track beam 1074 and can move along the track direction on the track beam 1074 to realize the forward and backward movement function of the gearbox 4 component in the generator cabin 3; the trolley driving screw 110 is installed on the trolley mechanism 105, and the trolley mechanism 105 moves by being driven by the trolley driving screw 110; the hanging beam 106 is installed at the end of the rope 104 and connected to the gearbox 4 component to be replaced. The rope 104 is led out from the cable storage winch 101, bypasses the first vertical reversing component 102, is pulled by the traction machine 103, and then bypasses the second vertical reversing component 109 and the horizontal reversing component 108 to reach the trolley mechanism 105. After passing through the trolley mechanism 105, it continues to extend downward for a section and then connects to the hanging beam 106. Driven by the trolley drive screw 110, the hanging beam 106 moves the gear box 4 component to the lowering position. By controlling the rotation of the cable storage winch 101 and the traction machine 103, the lifting action of the hanging beam 106 is realized, thereby realizing the lifting action of the gear box 4 component to be replaced.

[0042] like Figure 8 As shown, the skin opening assembly 2 includes a linkage mechanism and a lifting component.

[0043] The linkage mechanism includes links and hinges. The links include a first link 201, a second link 202, and a third link 203. The hinges include a first hinge shaft 206, a second hinge shaft 208, a third hinge shaft 209, a fourth hinge shaft 210, an upper hinge shaft 204, and a lower hinge shaft 205. The first link 201 and the lower hinge shaft 205 are mounted on the lower skin 6 of the generator nacelle 3. The upper hinge shaft 204 is mounted within the generator nacelle 3, and the upper hinge shaft 204 and the lower hinge shaft 205 are connected via the fourth hinge shaft 210. One end of the second link 202 is connected to the third link 203 via the first hinge shaft 206, and the other end is connected to the first link 201 via the second hinge shaft 208. The third link 203 and the lower hinge shaft 205 are connected via the third hinge shaft 209, ultimately forming a four-link mechanism.

[0044] The lifting component is installed in the generator cabin 3 and connected to the connecting rod mechanism to control the lower skin 6 to rotate and open around the fourth hinge shaft 210. Figure 9 shown.

[0045] The present invention adopts a modular assembly design. The weight of a single module does not exceed 600kg, and the total structure weight does not exceed 3 tons. It is lifted into the generator cabin 3 for installation by an electric hoist; the combined use of the cable storage winch 101 and the traction machine 103 enables the lifting mechanism with a rated load of 55KN to be directly installed in the generator cabin 3, reducing the installation time and difficulty, and the overall weight does not exceed 1.2 tons; the lower skin 6 can be opened and closed by this tooling, and it is only opened during lifting, which ensures the safety of the operation to the greatest extent. Since it does not require overall disassembly, the requirements for the ship deck are reduced during offshore operations; the gear box 4 components can be moved back and forth in the generator cabin 3, thereby completing the function of direct replacement of the gear box 4 components in the air, without the intervention of a lifting ship, and can achieve a significant reduction in replacement costs.

[0046] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A device for replacing gearbox components of an offshore wind turbine, characterized in that: The invention comprises a gantry assembly (1) and a skin opening assembly (2), wherein the gantry assembly (1) comprises a reversing component, a gantry (107) and a traction component; the reversing component is mounted on the gantry (107), the gantry (107) is mounted in a generator cabin (3), the traction component comprises a rope system (104), the rope system (104) spans the reversing component and is connected to a gearbox (4) component to be replaced; the skin opening assembly (2) comprises a connecting rod mechanism and a lifting component, the connecting rod mechanism is mounted on a lower skin (6) of the generator cabin, the lifting component is mounted in the generator cabin (3) and is connected to the connecting rod mechanism.

2. The device for replacing gearbox components of an offshore wind turbine according to claim 1, characterized in that: The gantry (107) includes a column, a support beam, a support and a pin (1079); the support is installed on the generator cabin (3); the column includes a front column (1072) and a rear column (1071); the front column (1072) is installed on the support through the pin (1079), and the rear column (1071) is installed on the generator cabin (3); the support beam is installed on the column.

3. The device for replacing gearbox components of an offshore wind turbine according to claim 2, characterized in that: The support beam comprises a crossbeam (1073) and a track beam (1074), and there are two front columns (1072) and two rear columns (1071); there are two crossbeams (1073), the two ends of one crossbeam (1073) are respectively mounted on the two front columns (1072), and the two ends of the other crossbeam (1073) are respectively mounted on the two rear columns (1071); the two ends of the track beam (1074) are respectively mounted on the two crossbeams (1073).

4. The device for replacing gearbox components of an offshore wind turbine according to claim 3, characterized in that: The support beam further comprises a reinforcing beam (1075) and a connecting beam (1077). There are two reinforcing beams (1075), and the two ends of each reinforcing beam (1075) are respectively mounted on the front column (1072) and the rear column (1071), and are parallel to the track beam (1074); there are two track beams (1074), and the two ends of the connecting beam (1077) are respectively connected to one end of the two track beams (1074) mounted on the same crossbeam (1073).

5. The device for replacing gearbox components of an offshore wind turbine according to claim 3, characterized in that: The traction components further include a cable storage winch (101), a traction machine (103), a trolley mechanism (105), a hanging beam (106) and a trolley drive screw (110); the cable storage winch (101) is installed on the generator cabin (3), the traction machine (103) is installed on the rear column (1071), the trolley mechanism (105) is installed on the track beam (1074), and the trolley drive screw (110) is installed on the trolley mechanism (105); the rope system (104) is wound around the cable storage winch (101), one end of which spans the traction machine (103) and the trolley mechanism (105), and the hanging beam (106) is installed at the end of the rope system (104) to connect the gear box (4) component to be replaced.

6. The device for replacing gearbox components of an offshore wind turbine according to claim 2, characterized in that: The reversing component comprises a horizontal reversing component (108), a first vertical reversing component and a second vertical reversing component, wherein the horizontal reversing component (108) and the second vertical reversing component are mounted on a support beam, and the first vertical reversing component is mounted on a generator cabin (3) and is located on one side of a rear column (1071); the rope system (104) of the traction component sequentially crosses the first vertical reversing component, the second vertical reversing component and the horizontal reversing component (108).

7. The device for replacing gearbox components of an offshore wind turbine according to claim 2, characterized in that: The generator cabin (3) is provided with a mounting interface, and the support is detachably connected to the generator cabin (3) via the mounting interface.

8. The device for replacing gearbox components of an offshore wind turbine according to claim 1, characterized in that: The connecting rod mechanism connects the generator cabin (3) and the generator cabin lower skin (6), and comprises a plurality of hinged parts and a plurality of connecting rods detachably connected via the hinged parts.

9. The device for replacing gearbox components of an offshore wind turbine according to claim 8, characterized in that: The connecting rod comprises a first connecting rod (201), a second connecting rod (202) and a third connecting rod (203), and the hinge comprises a hinge shaft, an upper hinge (204) and a lower hinge (205); the first connecting rod (201) and the lower hinge (205) are installed on the lower skin (6) of the generator cabin, the upper hinge (204) is installed in the generator cabin (3) and is connected to the lower hinge (205) through a hinge shaft; the two ends of the second connecting rod (202) are respectively connected to the first connecting rod (201) and the third connecting rod (203) through a hinge shaft; the third connecting rod (203) is connected to the lower hinge (205) through a hinge shaft.

10. The device for replacing gearbox components of an offshore wind turbine according to claim 1, characterized in that: The reversing component of the gantry assembly (1) and the gantry (107), as well as the gantry (107) and the generator cabin (3), are all detachably connected.

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