Auxiliary hoisting device for offshore wind generating set

Abstract

The invention relates to the technical field of hoisting auxiliary machinery, in particular to an offshore wind generating set auxiliary hoisting device which comprises a connecting bridge, generator blade fixing devices are arranged at the two ends of the connecting bridge, each generator blade fixing device comprises a U-shaped frame, and an opening of each U-shaped frame faces the front of the connecting bridge. A self-adaptive fixing device capable of self-adaptively adjusting according to the thickness of the fan blade of the generator is arranged in the U-shaped frame, and a bottom supporting device capable of assisting the fan blade of the generator in entering the U-shaped frame and assisting the self-adaptive fixing device in clamping is arranged at the bottom of the U-shaped frame. The auxiliary hoisting device for the offshore wind generating set can achieve self-adaptive clamping, improve the stability and achieve efficient positioning, and has high compatibility.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting auxiliary machinery, in particular to an auxiliary hoisting device for offshore wind turbine generator units. BACKGROUND

[0002] Hoisting of offshore wind turbine generator units is a key link in offshore wind power engineering construction. The fan blades of wind turbine generator units are large in size and heavy in weight, and are installed at a location in a sea wave environment. Traditional hoisting operations are mainly completed by using large cranes and general clamps. However, such an operation mode has the following significant problems.

[0003] 1. Poor environmental adaptability: the sea waves cause the fan blades to shake violently during hoisting, and the general clamp is difficult to stably clamp the curved fan blades; especially when the fan blades are placed at an inclination or the installation height difference is large, the force on the clamping point is uneven, which easily causes slippage or structural damage.

[0004] 2. Efficiency bottleneck: the fan blades need to be manually adjusted in position to match the clamp. Since the fan blades are large in size, manual adjustment requires 6-8 operators to cooperate, and the operation is time-consuming and risky in adverse sea conditions.

[0005] 3. Insufficient compatibility: different models of fan blades have large differences in thickness and curvature, and the traditional clamp cannot be self-adaptively adjusted, so the tooling needs to be frequently replaced. SUMMARY

[0006] The technical problem to be solved by the present application is to provide an auxiliary hoisting device for offshore wind turbine generator units, which can be self-adaptively clamped, improve stability, and efficiently position, and has high compatibility.

[0007] To solve the above technical problems, the technical solution provided by the present application is as follows: an auxiliary hoisting device for offshore wind turbine generator units, comprising a connecting bridge, fan blade fixing devices are arranged at both ends of the connecting bridge, the fan blade fixing device comprises a U-shaped frame, the opening of the U-shaped frame faces the front of the connecting bridge, a self-adaptive fixing device that can be self-adaptively adjusted according to the thickness of the fan blade of the generator is arranged in the U-shaped frame, and a bottom supporting device that can assist the fan blade of the generator to enter the U-shaped frame and assist the self-adaptive fixing device to clamp is arranged at the bottom of the U-shaped frame.

[0008] As an improvement, the self-adaptive fixing device comprises a sliding block that can move up and down on the closed end of the U-shaped frame, a three-end sliding rail is fixedly installed on the side of the sliding block close to the opening end of the U-shaped frame, an upward end of the three-end sliding rail is slidingly connected with an L-shaped top plate, the L-shaped top plate is always attached to the upper end of the U-shaped frame, the two downward ends of the three-end sliding rail are slidingly connected with self-adaptive clamping plates, a first hydraulic telescopic rod is arranged at the axis of the three-end sliding rail, a hexagonal connecting sleeve is fixedly connected to the telescopic end of the first hydraulic telescopic rod, and a connecting rod is hingedly connected between the hexagonal connecting sleeve and the L-shaped top plate and the self-adaptive clamping plates.

[0009] As an improvement, the U-shaped frame comprises a U-shaped frame body, the closed end of the U-shaped frame body is provided with a cavity for the up-down sliding of the sliding block, and the U-shaped frame body is provided with a through slot for the up-down movement of the sliding block and the connecting position of the three-end sliding rail.

[0010] As an improvement, the cavity is provided with a spring for the upward movement of the sliding block.

[0011] As an improvement, the bottom of the self-adaptive clamping plate is hingedly connected with a roller, the bottom of the roller is fixedly provided with a pressing plate, there is a gap between the self-adaptive clamping plate and the pressing plate, and the bottom of the self-adaptive clamping plate is provided with a groove for the rotation of the roller.

[0012] As an improvement, the bottom supporting device comprises a second hydraulic telescopic rod fixedly installed at the bottom of the closed end of the U-shaped frame body, a first shaft support fixedly installed at the telescopic end of the second hydraulic telescopic rod, a supporting plate hingedly connected with the first shaft support, and a pad provided at the top of the supporting plate away from the first shaft support.

[0013] As an improvement, the connecting bridge comprises a bridge body, the bridge body is provided with a second shaft support, the second shaft support is hingedly connected with a hoisting main rod, the top of the hoisting main rod is hingedly connected with a rotating machine, and the top of the rotating machine is provided with an eye.

[0014] As an improvement, the hoisting main rod and the bridge body are hingedly connected with a third hydraulic telescopic rod.

[0015] After the above structure is adopted, the present application has the following advantages:

[0016] 1. Adaptive clamping and stability improvement: the first hydraulic telescopic rod drives the hexagonal connecting sleeve, synchronously controls the downward pressing of the L-shaped top plate and the inward retraction of the two self-adaptive clamping plates, realizes the dynamic fitting of the thickness of the fan blade and the curved surface, the hingedly connected roller at the bottom of the self-adaptive clamping plate can rotate with the fan blade curvature, the gap between the pressing plate and the clamping plate is reserved, the micro swing is allowed, the rigid friction damage to the blade surface is avoided, and the flexible clamping force is maintained in the storm.

[0017] 2. High-efficiency positioning and anti-interference design: the second hydraulic telescopic rod drives the supporting plate to expand around the roller shaft, the pad forms a lifting slope, and guides the sliding of the fan blade into the U-shaped frame; after the hydraulic contraction, the supporting plate is withdrawn, the fan blade is accurately dropped into the clamping area, and the interference between the supporting structure and the hoisting path is avoided.

[0018] 3. Multi-degree-of-freedom hoisting adjustment: the third hydraulic telescopic rod adjusts the inclination angle of the hoisting main rod, the rotating machine realizes the 360° fine adjustment of the horizontal plane, the multi-degree-of-freedom hoisting system is formed through the connection of the crane through the eye, and the artificial positioning difficulty is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural diagram of an offshore wind turbine auxiliary hoisting deviceFigure 1 .

[0020] Figure 2 is a structural schematic of an offshore wind turbine auxiliary hoisting device Figure 2 .

[0021] Figure 3 is a structural schematic of a generator fan blade fixing device of an offshore wind turbine auxiliary hoisting device.

[0022] Figure 4 is an exploded structural schematic of a generator fan blade fixing device of an offshore wind turbine auxiliary hoisting device.

[0023] Figure 5 is a structural schematic of a U-shaped frame of an offshore wind turbine auxiliary hoisting device.

[0024] Figure 6 is a structural schematic of a self-adaptive fixing device of an offshore wind turbine auxiliary hoisting device.

[0025] Figure 7 is an exploded structural schematic of a self-adaptive fixing device of an offshore wind turbine auxiliary hoisting device.

[0026] Figure 8 is a structural schematic of a self-adaptive clamping plate of an offshore wind turbine auxiliary hoisting device.

[0027] Figure 9 is an exploded structural schematic of a bottom supporting device of an offshore wind turbine auxiliary hoisting device.

[0028] Figure 10 is a structural schematic of a connecting bridge of an offshore wind turbine auxiliary hoisting device.

[0029] Figure 11 is an exploded structural schematic of a connecting bridge of an offshore wind turbine auxiliary hoisting device.

[0030] As shown in the figure: 1, connecting bridge; 11, bridge body; 12, second shaft support; 13, rotating machine; 14, hoisting main rod; 15, third hydraulic telescopic rod; 16, lifting lug; 3, generator fan blade fixing device; 31, U-shaped frame; 311, U-shaped frame body; 312, cavity; 313, through slot; 314, roller; 32, adaptive fixing device; 321, sliding block; 322, three-terminal slide rail; 323, first hydraulic telescopic rod; 324, L-shaped top plate; 325, hexagonal connecting sleeve; 326, connecting rod; 327, adaptive clamping plate; 328, roller; 329, pressing plate; 33, bottom supporting device; 331, supporting plate; 332, cushion block; 333, first shaft support; 334, second hydraulic telescopic rod. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the drawings.

[0032] The drawings show Figure 1 , the drawings show Figure 2 , the drawings show Figure 10 , the drawings show Figure 11 , and the drawings show

[0033] A kind of offshore wind turbine auxiliary hoisting device, it includes connecting bridge 1, connecting bridge 1 two ends are equipped with generator fan blade fixing device 3, the connecting bridge 1 includes bridge body 11, bridge body 11 is equipped with second shaft support 12, second shaft support 12 is hinged with hoisting main rod 14, hoisting main rod 14 top is hinged with rotating machine 13, rotating machine 13 top is equipped with lifting lug 16, hoisting main rod 14 and bridge body 11 are hinged with third hydraulic telescopic rod 15.

[0034] The prior art in offshore generator set fan blade is hoisted and installed, is adjusted hoist angle by lifting cable alone, but due to the common wind and wave of offshore operation, it is difficult to adjust the installation angle of the fan blade due to the lack of rigid connection, and the installation efficiency is low, through the structure, third hydraulic telescopic rod 15 can adjust the inclination angle of hoisting main rod 14, rotating machine 13 realizes horizontal plane angle fine adjustment, lifting lug 16 is connected after crane, forms multi-degree-of-freedom hoisting system, ensures that the fan blade is accurately connected to the hub.

[0035] The drawings show Figure 1 , the drawings show Figure 3 , the drawings show Figure 5 , the drawings show Figure 6 , and the drawings show Figure 7

[0036] ​The generator fan fixing device 3 comprises a U-shaped frame 31, the opening of the U-shaped frame 31 faces the front of the connecting bridge 1, and the U-shaped frame 31 is internally provided with an adaptive fixing device 32 which can be self-adapted and adjusted according to the thickness of the generator fan, the adaptive fixing device 32 comprises a sliding block 321 which can move up and down on the closed end of the U-shaped frame 31, a three-end sliding rail 322 is fixedly installed on the side of the sliding block 321 close to the opening end of the U-shaped frame 31, the upward end of the three-end sliding rail 322 is slidingly connected with an L-shaped top plate 324, the L-shaped top plate 324 is always attached to the upper end of the U-shaped frame 31, the downward two ends of the three-end sliding rail 322 are slidingly connected with adaptive clamping plates 327, a first hydraulic telescopic rod 323 is arranged at the shaft center of the three-end sliding rail 322, a hexagonal connecting sleeve 325 is fixedly connected with the telescopic end of the first hydraulic telescopic rod 323, and a connecting rod 326 is hinged between the L-shaped top plate 324 and the adaptive clamping plates 327.

[0037] The U-shaped frame 31 comprises a U-shaped frame body 311, the closed end of the U-shaped frame body 311 is provided with a cavity 312 for the sliding block 321 to slide up and down, and the U-shaped frame body 311 is provided with a through groove 313 for the sliding block 321 and the connecting place of the three-end sliding rail 322 to move up and down, and the cavity 312 is provided with a spring for the sliding block 321 to move upward.

[0038] The length of the offshore generator set fan is usually more than 80 meters, in order to balance the stability of the fan hoisting process, the clamping part of the offshore generator set fan is usually closer to the fan root, but the surface between the fan and the fan root is curved, and it is not easy to stably clamp during the clamping process of the traditional hoisting device, and the fan is easily damaged;

[0039] Through the structure, when the first hydraulic telescopic rod 323 pushes the hexagonal connecting sleeve 325, the L-shaped top plate 324 and the three-end sliding rail 322 generate relative displacement, so that the three-end sliding rail 322 and the first hydraulic telescopic rod 323 translate downward as a whole, at the same time, the adaptive clamping plates 327 also move along the two end directions below the three-end sliding rail 322, so as to clamp the fan, since the surface of the fan is usually not completely horizontal, it can be ensured that one of the adaptive clamping plates 327 is in contact with the surface of the fan.

[0040] Combined with the accompanying drawings Figure 3 , the accompanying drawings Figure 6 , the accompanying drawings Figure 7 and the accompanying drawings Figure 8 :

[0041] The adaptive clamping plate 327 is hinged with a roller 328 at the bottom, the bottom of the roller 328 is fixedly installed with a pressing plate 329, there is a gap between the pressing plate 329 and the adaptive clamping plate 327, and the bottom of the adaptive clamping plate 327 is provided with a groove for the rotation of the roller 328.

[0042] The clamping position of the fan blade of the offshore generator set is usually close to the fan blade root, and the fan blade and the fan blade root are curved surfaces. In the clamping process of the traditional lifting device, the fan blade is easily damaged due to the rigid friction between the lifting appliance and the fan blade. Through the structure, when the adaptive clamp plate 327 contacts the curved surface of the fan blade, the roller 328 can rotate freely with the curvature of the fan blade, avoiding rigid friction damage to the fan blade. The gap between the pressing plate 329 and the adaptive clamp plate 327 allows the pressing plate to swing slightly, further adapting to the unevenness of the fan blade surface, and realizing flexible clamping in a stormy environment.

[0043] In combination with the accompanying drawings Figure 3 , the accompanying drawings Figure 4 , the accompanying drawings Figure 5 and the accompanying drawings Figure 9 :

[0044] The bottom of the U-shaped frame 31 is provided with a bottom supporting device 33 which can assist the fan blade of the generator to enter the U-shaped frame 31 and assist the adaptive fixing device 32 to clamp. The bottom supporting device 33 comprises a second hydraulic telescopic rod 334 fixedly installed at the bottom of the closed end of the U-shaped frame body 311. The telescopic end of the second hydraulic telescopic rod 334 is fixedly installed with a first shaft support 333. The first shaft support 333 is hingedly connected with a supporting plate 331. The top of the supporting plate 331 is provided with a pad 332 away from the first shaft support 333. The lower end of the U-shaped frame body 311 is hingedly connected with a roller shaft 314 for sliding of the bottom of the supporting plate 331.

[0045] Since the fan blade of the offshore generator set is relatively large, the existing technology needs multiple operators to cooperate when installing the fan blade into the lifting clamp. After manual fine adjustment, the upper clamp can be started to fix. It is time-consuming and laborious. Through this structure, the second hydraulic telescopic rod 334 pushes the supporting plate 331 to rotate and expand around the roller shaft 314. The pad 332 forms a lifting slope to guide the fan blade to slide into the U-shaped frame 31.

[0046] When the hydraulic rod is retracted, the bottom of the supporting plate 331 is withdrawn along the roller shaft 314, so that the fan blade falls completely into the clamping range of the adaptive fixing device 32. One end of the pad 332 is lifted. At the same time, the clamping force is improved, and the supporting structure is prevented from interfering with the lifting path of the fan blade.

[0047] In the specific implementation of the present application, the lifting lug 16 is connected to the crane hook. The third hydraulic telescopic rod 15 is started to adjust the initial inclination of the lifting main rod 14. The rotating machine 13 is pre-adjusted to the horizontal plane 0° reference position, so as to ensure that the opening direction of the U-shaped frame 31 is opposite to the fan blade conveying path.

[0048] The second hydraulic telescopic rod 334 of the bottom supporting device 33 is started. The supporting plate 331 is pushed to expand around the roller shaft 314 to an inclined state. Referring to the accompanying drawings Figure 3At this time, the pad 332 forms a guide slope, the crane slides the bottom of the fan along the slope of the pad 332 into the U-shaped frame 31, and the second hydraulic telescopic rod 334 is started again to pull the support plate 331 to move around the roller 314, at this time, the pad 332 has an upward moving trend until the pad 332 is in contact with the bottom of the fan.

[0049] The first hydraulic telescopic rod 323 is triggered to extend, the hexagonal connecting sleeve 325 is pushed to move forward, the upper connecting rod 326 pulls the L-shaped top plate 324 to abut against the upper end of the U-shaped frame body 311, the three-end slide rail 322 is pressed downward, the self-adaptive clamp plate 327 is synchronously opened along the three-end slide rail 322 until the three-end slide rail 322 is closely attached to the upper surface of the fan, and the clamping force is transmitted to the curved surface of the fan through the pressing plate 329. When the curvature of the surface of the fan is uneven, for example, the curvature difference of the blade root, the roller 328 is adaptively rotated in the groove body, the pressing plate 329 and the self-adaptive clamp plate 327 slightly swing, and local stress concentration is avoided.

[0050] The above describes the present application and its embodiments, which is not limited, and the actual structure is not limited. If a person skilled in the art is inspired by it, without departing from the purpose of the present application, similar structure and embodiments are designed without creativity, which should belong to the protection scope of the present application.

Claims

1. An auxiliary hoisting device for offshore wind turbine generator unit, comprising a connecting bridge (1), the two ends of the connecting bridge (1) are provided with generator blade fixing devices (3), characterized in that: The generator fan blade fixing device (3) comprises a U-shaped frame (31), the opening of the U-shaped frame (31) faces the front of the connecting bridge (1), and the U-shaped frame (31) is internally provided with an adaptive fixing device (32) which can be self-adapted and adjusted according to the thickness of the generator fan blade; and the bottom of the U-shaped frame (31) is provided with a bottom supporting device (33) which can assist the generator fan blade to enter the U-shaped frame (31) and assist the adaptive fixing device (32) to clamp.

2. A kind of offshore wind turbine unit auxiliary hoisting device according to claim 1, it is characterized by: The adaptive fixing device (32) comprises a sliding block (321) which can move up and down on the closed end of the U-shaped frame (31), the sliding block (321) is fixedly installed on one side close to the opening end of the U-shaped frame (31) and is provided with a three-end sliding rail (322), the upward end of the three-end sliding rail (322) is slidably connected with an L-shaped top plate (324), the L-shaped top plate (324) is always attached to the upper end of the U-shaped frame (31), the downward two ends of the three-end sliding rail (322) are slidably connected with adaptive clamping plates (327), the axial center of the three-end sliding rail (322) is provided with a first hydraulic telescopic rod (323), the telescopic end of the first hydraulic telescopic rod (323) is fixedly connected with a hexagonal connecting sleeve (325), and the hexagonal connecting sleeve (325) is hingedly connected with a connecting rod (326) between the L-shaped top plate (324) and the adaptive clamping plates (327).

3. A device according to claim 2, c h a r a c t e r i s e d in that: The U-shaped frame (31) comprises a U-shaped frame body (311), the closed end of the U-shaped frame body (311) is provided with a cavity (312) for the sliding block (321) to slide up and down, and the U-shaped frame body (311) is provided with a through groove (313) for the sliding block (321) and the connecting place of the three-end sliding rail (322) to move up and down.

4. A device according to claim 3, c h a r a c t e r i s e d in that: The cavity (312) is provided with a spring which makes the sliding block (321) tend to move upward.

5. A device according to claim 3, c h a r a c t e r i s e d in that: The bottom of the adaptive clamping plate (327) is hingedly connected with a roller (328), the bottom of the roller (328) is fixedly installed with a pressing plate (329), there is a gap between the pressing plate (329) and the adaptive clamping plate (327), and the bottom of the adaptive clamping plate (327) is provided with a groove for the roller (328) to rotate.

6. A kind of offshore wind turbine unit auxiliary hoisting device according to claim 3, characterized in that: The bottom supporting device (33) comprises a second hydraulic telescopic rod (334) which is fixedly installed on the closed end of the U-shaped frame body (311), the telescopic end of the second hydraulic telescopic rod (334) is fixedly installed with a first shaft support (333), the first shaft support (333) is hingedly connected with a supporting plate (331), the top of the supporting plate (331) is provided with a cushion block (332) away from one end of the first shaft support (333), and the lower end of the U-shaped frame body (311) is hingedly connected with a roller shaft (314) for the bottom of the supporting plate (331) to slide.

7. A device for assisting in the hoisting of an offshore wind turbine generator system according to claim 1, characterized in that: The connecting bridge (1) comprises a bridge body (11), the bridge body (11) is provided with a second shaft support (12), the second shaft support (12) is hingedly connected with a hoisting main rod (14), the top of the hoisting main rod (14) is hingedly connected with a rotating machine (13), and the top of the rotating machine (13) is provided with an eye bar (16).

8. A device according to claim 7, c h a r a c t e r i s e d in that: The hoisting main rod (14) and the bridge body (11) are hingedly connected with a third hydraulic telescopic rod (15). The third hydraulic telescopic rod (15) is hingedly connected between the hoisting main rod (14) and the bridge body (11).

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