Lifting device for hydraulic assembly of wind turbine generator

Abstract

The hoisting device comprises a supporting structure, a cantilever and a hoisting structure, the supporting structure extends in the vertical direction, the lower end of the supporting structure is used for being supported on a main machine frame of the wind turbine generator and detachably connected with a lifting lug on the main machine frame, and the cantilever extends in the horizontal direction; one end of the cantilever is rotatably connected to the upper end of the supporting structure around a rotating axis extending in the vertical direction, the upper end of the hoisting structure is movably connected to the cantilever in the extending direction of the cantilever, and the lower end of the hoisting structure is used for being detachably connected with a valve block of a hydraulic assembly of the wind turbine generator. The hoisting structure is constructed to enable the valve block to ascend or descend. The lifting device can replace manual work to transfer the valve block, the requirements for the number, physical strength and mutual matching degree of workers can be lowered, and the risks of equipment damage and worker injury in the valve block transferring process can be lowered.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lifting equipment, and in particular to a lifting device for a hydraulic component of a wind turbine generator set. Background Art

[0002] The hydraulic assembly is an important part of the wind turbine. Its main function is to provide pressurized oil that meets the pressure and flow requirements to the high-speed shaft brake and yaw brake of the wind turbine. It is usually installed on the main frame of the wind turbine. The hydraulic assembly includes a valve block and an oil tank. The oil pump and filter element of the hydraulic assembly are integrated on the valve block and connected to the oil tank through the valve block. When the oil pump of the hydraulic assembly fails or needs to be replaced, the valve block needs to be separated from the oil tank, and then the valve block needs to be moved to a location with a larger operating space to facilitate the staff to inspect and maintain the components or oil tank integrated on the valve block.

[0003] In the related art, due to the heavy weight of the valve block (including the components integrated on the valve block), it is generally necessary for multiple workers to manually move the valve block. However, the space around the wind turbine is very small, which is not convenient for multiple workers to carry the valve block together. During the transportation process, multiple workers need to cooperate highly. Once a mistake occurs, it may cause damage to the equipment and injury to the workers. Utility Model Content

[0004] The purpose of the present disclosure is to provide a lifting device for a hydraulic component of a wind turbine generator set to solve the technical problems existing in the related art.

[0005] In order to achieve the above object, the present disclosure provides a lifting device for a hydraulic assembly of a wind turbine generator set, comprising:

[0006] A support structure extending in a vertical direction, wherein the lower end of the support structure is used to be supported on a main frame of the wind turbine generator set and is detachably connected to a lifting lug on the main frame;

[0007] A cantilever extending in the horizontal direction, one end of the cantilever being rotatably connected to the upper end of the support structure around a rotation axis extending in the vertical direction;

[0008] A hoisting structure, wherein the upper end of the hoisting structure is movably connected to the cantilever along the extension direction of the cantilever, and the lower end of the hoisting structure is used to be detachably connected to the valve block of the hydraulic assembly of the wind turbine set, and the hoisting structure is constructed to enable the valve block to rise or fall.

[0009] Optionally, the support structure includes a connecting seat and a column, the lower end of the column is connected to the connecting seat, and the upper end of the column is connected to the cantilever;

[0010] The bottom of the connecting seat is provided with a groove with an opening facing downwards, the groove is used for the ear to be inserted and engaged with the ear, and the connecting seat is formed with a first through hole and a second through hole, the first through hole and the second through hole are arranged opposite to each other and are both connected to the groove;

[0011] The lifting device further comprises a locking rod, which can pass through the first through hole, the lifting ear and the second through hole in sequence.

[0012] Optionally, a stopper is provided at the first end of the locking rod, and the stopper protrudes outwardly from the locking rod in a radial direction of the locking rod;

[0013] A through hole extending in the radial direction of the locking rod is formed at the second end of the locking rod, and the lifting device further includes a stopper, which is passed through the through hole.

[0014] Optionally, the support structure also includes a support base connected to the lower end of the connecting base, the support base is used to support the main frame of the wind turbine set, the interior of the support base has a accommodating space for accommodating part of the lifting ear, the groove is connected to the accommodating space, and the projection area of ​​the accommodating space along the vertical direction is larger than the projection area of ​​the groove along the vertical direction.

[0015] Optionally, the first through holes and the second through holes are both provided in plurality, the plurality of first through holes are arranged at intervals along the vertical direction, the plurality of second through holes are arranged at intervals along the vertical direction, and the plurality of first through holes and the plurality of second through holes correspond to each other one by one.

[0016] Optionally, the lifting device further includes a rotating shaft extending along the vertical direction, one end of the cantilever is fixedly connected to the rotating shaft, and the rotating shaft is detachably connected to the upper end of the supporting structure.

[0017] Optionally, a first mounting plate and a second mounting plate are provided at the upper end of the support structure, the first mounting plate and the second mounting plate are spaced apart in the vertical direction, the first mounting plate is fixedly connected to the support structure, and the second mounting plate is detachably mounted to the support structure;

[0018] The first mounting plate is provided with a first mounting hole, and the second mounting plate is provided with a second mounting hole directly opposite to the first mounting hole;

[0019] The middle portion of the rotating shaft is fixedly connected to the cantilever, and the middle portion of the rotating shaft is located between the first mounting plate and the second mounting plate, one end of the rotating shaft is rotatably inserted into the first mounting hole, and the other end of the rotating shaft is rotatably inserted into the second mounting hole.

[0020] Optionally, a flange plate is further provided at the upper end of the support structure, the flange plate is fixedly connected to the support structure and is located between the first mounting plate and the second mounting plate, and the second mounting plate is detachably connected to the flange plate via fasteners.

[0021] Optionally, the cantilever is provided with a guide rail extending along the extension direction of the cantilever, and the lifting device also includes a sliding member, which is slidably mounted on the guide rail, and a mounting portion is provided on the sliding member, and the upper end of the lifting structure is detachably connected to the mounting portion.

[0022] Optionally, the lifting structure is a hand winch.

[0023] According to the above technical solution, since the cantilever extends in the horizontal direction, and one end of the cantilever is rotatably connected to the upper end of the supporting structure around the rotation axis extending in the vertical direction, the position of the hoisting structure in the horizontal direction can be changed by rotating the cantilever and moving the hoisting structure in the extension direction of the cantilever. Since the supporting structure extends in the vertical direction, the cantilever connected to the upper end of the supporting structure can be spaced from the hydraulic assembly in the vertical direction. Therefore, the valve block can be raised by controlling the hoisting structure to separate the valve block of the hydraulic assembly from the oil tank of the hydraulic assembly, and the valve block can be raised to a height that does not interfere with other structures of the wind turbine. After the valve block is moved to a position with a larger operating space by rotating the cantilever and moving the hoisting structure, the hoisting structure can be controlled to lower the valve block, thereby facilitating the staff to inspect and maintain the hydraulic assembly (components and oil tank installed on the valve block). It can be understood that the working principle of the hoisting device to hoist the valve block back to the oil tank is the same as above, and will not be repeated here.

[0024] Therefore, compared with the related technology, the lifting device provided by the present invention can replace manual transfer of the valve block, which can not only reduce the requirements for the number of workers, physical strength, and mutual coordination, but also reduce the risk of equipment damage and worker injury during the transfer of the valve block.

[0025] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0027] Figure 1 is a schematic diagram of the three-dimensional structure of a lifting device provided in one embodiment of the present disclosure;

[0028] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0029] Figure 3 is a partial cross-sectional view of a lifting device provided in one embodiment of the present disclosure;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of a connecting piece and a supporting seat of a lifting device provided in one embodiment of the present disclosure;

[0031] Figure 5 The present invention provides a three-dimensional structural diagram of a main frame, lifting lugs and hydraulic components of a wind turbine generator set according to an embodiment of the present invention.

[0032] Description of Reference Numerals

[0033] 1-lifting device; 10-support structure; 11-connecting seat; 111-groove; 112-first through hole; 113-second through hole; 12-column; 13-support seat; 131-accommodating space; 14-first mounting plate; 141-first mounting hole; 15-second mounting plate; 151-second mounting hole; 16-flange plate; 20-cantilever; 21-guide rail; 30-lifting structure; 40-locking rod; 41-block; 42-through hole; 50-stopper; 60-rotating shaft; 70-sliding member; 71-installation part; 80-wind turbine set; 81-main frame; 82-lifting ear; 821-lifting ear hole; 83-weld; 90-hydraulic component; 91-valve block; 92-oil tank. DETAILED DESCRIPTION

[0034] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0035] In the present disclosure, unless otherwise stated, directional words such as "upper, lower, top, bottom, vertical, horizontal" are generally defined by the upper, lower, top, bottom, vertical, and horizontal positions of the lifting device in normal use (for details, please refer to Figure 1 The above descriptions are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as limiting the present disclosure. "Inside and outside" refer to the inside and outside of the corresponding component outline. In addition, the terms "first", "second", etc. used are to distinguish one element from another, and do not have order and importance.

[0036] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0037] like Figures 1 to 5 As shown, the present disclosure provides a lifting device 1 for a hydraulic component 90 of a wind turbine 80, comprising a supporting structure 10, a cantilever 20 and a lifting structure 30, wherein the supporting structure 10 extends in a vertical direction, and the lower end of the supporting structure 10 is used to be supported on a main frame 81 of the wind turbine 80 and is detachably connected to a lifting lug 82 on the main frame 81, the cantilever 20 extends in a horizontal direction, and one end of the cantilever 20 is rotatably connected to the upper end of the supporting structure 10 around a rotation axis extending in a vertical direction, the upper end of the lifting structure 30 is movably connected to the cantilever 20 along an extension direction of the cantilever 20, and the lower end of the lifting structure 30 is used to be detachably connected to a valve block 91 of the hydraulic component 90 of the wind turbine 80, and the lifting structure 30 is constructed to enable the valve block 91 to rise or fall.

[0038] According to the above technical solution, since the cantilever 20 extends in the horizontal direction, and one end of the cantilever 20 is rotatably connected to the upper end of the support structure 10 around a rotation axis extending in the vertical direction, and the upper end of the hoisting structure 30 is movably connected to the cantilever 20 along the extension direction of the cantilever 20, before the valve block 91 is hoisted by the hoisting device 1, the cantilever 20 can be rotated and the hoisting structure 30 can be moved along the extension direction of the cantilever 20 to change the position of the hoisting structure 30 in the horizontal direction, so that the hoisting structure 30 can be adapted to the position of the valve block 91 to connect the valve block 91. Since the support structure 10 extends in the vertical direction, the cantilever 20 connected to the upper end of the support structure 10 can be spaced from the hydraulic assembly 90 in the vertical direction. By controlling the hoisting structure 30 to raise the valve block 91, the valve block 91 of the hydraulic assembly 90 can be separated from the oil tank 92 of the hydraulic assembly 90, and the valve block 91 can be raised to a height that does not interfere with other structures of the wind turbine 80. Then, by rotating the cantilever 20 and moving the lifting structure 30, the valve block 91 can be moved to a position with a larger operating space, and then the lifting structure 30 is controlled to lower the valve block 91, so that it is convenient for the staff to inspect and maintain the hydraulic assembly 90 (the components or oil tank 92 integrated on the valve block 91). It can be understood that the working principle of the lifting device 1 lifting the valve block 91 back to the oil tank 92 is the same as above, and it will not be repeated here.

[0039] Compared with the related art, the lifting device 1 provided by the present invention can replace manual transfer of the valve block 91, which can not only reduce the requirements on the number of workers, physical strength, and mutual coordination, but also reduce the risk of equipment damage and worker injury during the transfer of the valve block 91.

[0040] Furthermore, since the lower end of the support structure 10 is supported on the main frame 81 of the wind turbine 80 and connected to the lifting lug 82 on the main frame 81, the installation of the lifting device 1 provided by the present disclosure on the main frame 81 does not require modification of the wind turbine 80, nor does it damage the original structure of the wind turbine 80, and has good economy and feasibility. The connection between the lower end of the support structure 10 and the lifting lug 82 is detachable, so that the staff can take the lifting device 1 away from the site after completing the inspection and maintenance of the hydraulic assembly 90, so as to avoid the lifting device 1 occupying the inspection space or operation space of the wind turbine 80.

[0041] In addition, the upper end of the lifting structure 30 is movable along the extension direction of the cantilever 20, so that the lifting structure 30 can be suitable for wind turbines 80 of different models (the distance between the lifting lug 82 on the main frame 81 of wind turbines 80 of different models and the hydraulic assembly 90 may be different, and the distance between the hydraulic assembly 90 of wind turbines 80 of different models and the position with a larger operating space may also be different).

[0042] Optionally, the connection between the lower end of the lifting structure 30 and the valve block 91 can be achieved by winding a connecting structure (such as a lifting belt) connected to the lower end of the lifting structure 30 around a structure or component on the valve block 91, or by first partially lifting the valve block 91 and allowing the lifting belt to bypass the bottom of the valve block 91. The staff can make choices and adjustments based on actual conditions, and the present disclosure does not limit this.

[0043] In order to realize the detachable connection between the support structure 10 and the lifting lug 82, as an embodiment, Figure 1 and Figure 3 As shown, the support structure 10 may include a connecting seat 11 and a column 12, the lower end of the column 12 is connected to the connecting seat 11, and the upper end of the column 12 is connected to the cantilever 20. The bottom of the connecting seat 11 is provided with a groove 111 with an opening facing downward, and the groove 111 is used for the ear 82 to be inserted and engaged with the ear 82. A first through hole 112 and a second through hole 113 are formed on the connecting seat 11, and the first through hole 112 and the second through hole 113 are arranged opposite to each other and are both connected to the groove 111. The lifting device 1 also includes a locking rod 40, which can pass through the first through hole 112, the ear 82 (that is, the ear hole 821 on the ear 82) and the second through hole 113 in sequence.

[0044] Since the support structure 10 includes a connection seat 11 and a column 12, the lower end of the column 12 is connected to the connection seat 11, and the bottom of the connection seat 11 is provided with a groove 111 opening downward, therefore, when connecting the support structure 10 and the lifting ear 82, the lifting ear 82 can be inserted into the groove 111, so that the groove 111 and the lifting ear 82 are engaged, thereby limiting the freedom of the column 12 in the horizontal direction, and the locking rod 40 is passed through the first through hole 112, the lifting ear 82 and the second through hole 113 in sequence, thereby limiting the freedom of the column 12 in the vertical direction, thereby achieving the connection between the support structure 10 and the lifting ear 82. When separating the support structure 10 and the lifting ear 82, the locking rod 40 can be separated from the first through hole 112, the lifting ear 82 and the second through hole 113 first, and then the groove 111 can be separated from the lifting ear 82, thereby achieving the separation of the support structure 10 and the lifting ear 82.

[0045] Furthermore, when the groove 111 is engaged with the lifting ear 82 , there may be multiple contact surfaces between the two, which is beneficial to avoid the shaking of the column 12 and the connecting seat 11 , so that the lifting device 1 is more stable during operation.

[0046] As other embodiments of the present disclosure, the support structure 10 may include a column 12, and the lifting device 1 may also include a chain, and the lower end of the column 12 and the lifting ear 82 may be unlockably wrapped together through the chain to achieve a detachable connection between the support structure 10 and the lifting ear 82.

[0047] In order to make the connection between the support structure 10 and the lifting lug 82 more reliable, as an implementation method, Figure 3 As shown, a stop block 41 is provided at the first end of the locking rod 40, and the stop block 41 protrudes outward from the locking rod 40 radially along the locking rod 40. A through hole 42 extending radially along the locking rod 40 is formed at the second end of the locking rod 40. The lifting device 1 also includes a stop member 50, which is passed through the through hole 42.

[0048] Since a stop block 41 is provided at the first end of the locking rod 40, and the stop block 41 protrudes outward from the locking rod 40 radially along the locking rod 40, the second end of the locking rod 40 can be first passed through the first through hole 112, the ear 82 and the second through hole 113 in sequence, and then the stop member 50 is passed through the through hole 42 located at the second end of the locking rod 40. The connecting seat 11 is clamped by the stop block 41 and the stop member 50 to prevent the locking rod 40 from slipping out of the first through hole 112, the ear 82 and the second through hole 113, thereby making the connection between the support structure 10 and the ear 82 more reliable.

[0049] It can be understood that by separating the stopper 50 from the through hole 42 , the locking rod 40 can be pulled out of the first through hole 112 , the hanging ear 82 and the second through hole 113 .

[0050] Since the lifting lug 82 is welded to the main frame 81, the connection between the lifting lug 82 and the main frame 81 usually has a raised weld 83. In order to avoid interference between the lower end of the connecting seat 11 and the weld 83, the support structure 10 cannot be stably supported on the main frame 81. As an embodiment, Figure 1 , Figure 3 Figure 4 As shown, the support structure 10 also includes a support base 13 connected to the lower end of the connecting base 11, and the support base 13 is used to support the main frame 81 of the wind turbine 80. The interior of the support base 13 has an accommodating space 131 for accommodating part of the lifting ear 82, and the groove 111 is connected to the accommodating space 131. The projection area of ​​the accommodating space 131 along the vertical direction is larger than the projection area of ​​the groove 111 along the vertical direction.

[0051] Since the projection area of ​​the accommodating space 131 along the vertical direction is larger than the projection area of ​​the groove 111 along the vertical direction, when the ear 82 is engaged with the groove 111, the raised weld 83 can be accommodated by the accommodating space 131, so that the bottom of the support seat 13 can be firmly supported on the main frame 81.

[0052] Since the heights of the lifting ear holes 821 of the lifting ears 82 on the main frames 81 of wind turbines 80 of different models may be different, in order to enable the support structure 10 to be stably installed on the main frames 81 of more models of wind turbines 80, as an implementation method, Figure 1 , Figure 3 Figure 4 As shown, the first through holes 112 and the second through holes 113 are both provided in plurality, the plurality of first through holes 112 are spaced apart in the vertical direction, the plurality of second through holes 113 are spaced apart in the vertical direction, and the plurality of first through holes 112 and the plurality of second through holes 113 correspond one to one.

[0053] Since the multiple first through holes 112 and the multiple second through holes 113 are arranged at intervals along the vertical direction, and the multiple first through holes 112 and the multiple second through holes 113 correspond one to one, the first through holes 112 and the second through holes 113 can correspond to the ear holes 821 of the ear 82 on the main frame 81 of various models of wind turbines 80, so as to facilitate the insertion of the locking rod 40, so that the support structure 10 can be stably installed on the main frame 81 of more models of wind turbines 80.

[0054] In order to enable one end of the cantilever 20 to be rotatably connected to the upper end of the support structure 10 around a rotation axis extending in the vertical direction, as an embodiment, Figure 1 and Figure 2As shown, the lifting device 1 may further include a rotating shaft 60 extending in the vertical direction, one end of the cantilever 20 is fixedly connected to the rotating shaft 60, and the rotating shaft 60 is detachably connected to the upper end of the supporting structure 10. Such an arrangement not only enables one end of the cantilever 20 to be rotatably connected to the upper end of the supporting structure 10 around the rotation axis extending in the vertical direction, but also enables the cantilever 20 and the rotating shaft 60 to be separated from the supporting structure 10, thereby reducing the space occupied by the lifting device 1, and further facilitating the handling of the lifting device 1.

[0055] In order to realize the detachable connection between the rotating shaft 60 and the supporting structure 10, optionally, as Figure 2 As shown, a first mounting plate 14 and a second mounting plate 15 are provided at the upper end of the supporting structure 10, and the first mounting plate 14 and the second mounting plate 15 are spaced apart in the vertical direction. The first mounting plate 14 is fixedly connected to the supporting structure 10, and the second mounting plate 15 is detachably mounted on the supporting structure 10. A first mounting hole 141 is provided on the first mounting plate 14, and a second mounting hole 151 opposite to the first mounting hole 141 is provided on the second mounting plate 15. The middle part of the rotating shaft 60 is fixedly connected to the cantilever 20, and the middle part of the rotating shaft 60 is located between the first mounting plate 14 and the second mounting plate 15. One end of the rotating shaft 60 is rotatably penetrated through the first mounting hole 141, and the other end of the rotating shaft 60 is rotatably penetrated through the second mounting hole 151.

[0056] Since the first mounting plate 14 is fixedly connected to the support structure 10 and the first mounting hole 141 is provided on the first mounting plate 14, one end of the rotating shaft 60 can be rotatably inserted into the first mounting hole 141, and then the second mounting hole 151 on the second mounting plate 15 is sleeved on the other end of the rotating shaft 60, and then the second mounting plate 15 is mounted on the support structure 10, thereby realizing the connection between the rotating shaft 60 and the support structure 10. The second mounting plate 15 can be separated from the support structure 10 to enable the rotating shaft 60 to be separated from the support structure 10.

[0057] In order to enable the second mounting plate 15 to be detachably mounted on the supporting structure 10, as an embodiment, Figure 2 As shown, a flange plate 16 is also provided at the upper end of the support structure 10. The flange plate 16 is fixedly connected to the support structure 10 and is located between the first mounting plate 14 and the second mounting plate 15. The second mounting plate 15 is detachably connected to the flange plate 16 via fasteners.

[0058] Optionally, the support structure 10 may be a hollow round tube, and the flange plate 16 may be welded to the upper end of the round tube, so that the lifting device 1 may be more lightweight.

[0059] As another embodiment, a solid connecting plate may be provided at the upper end of the supporting structure 10, on which a threaded hole is formed, and a fastener is passed through the second mounting plate 15 and threadedly connected to the threaded hole, so that the second mounting plate 15 can be detachably mounted on the supporting structure 10.

[0060] In order to make the upper end of the hanging structure 30 movably connected to the cantilever 20 along the extension direction of the cantilever 20, as an embodiment, Figure 1 As shown, the cantilever 20 is provided with a guide rail 21 extending along the extension direction of the cantilever 20, and the lifting device 1 also includes a sliding member 70, which is slidably installed on the guide rail 21, and a mounting portion 71 is provided on the sliding member 70, and the upper end of the lifting structure 30 is detachably connected to the mounting portion 71.

[0061] Since the guide rail 21 extends along the extension direction of the cantilever 20 and the sliding member 70 can be slidably installed on the guide rail 21, the upper end of the lifting structure 30 is connected to the mounting portion 71 on the sliding member 70, so that the upper end of the lifting structure 30 can be movably connected to the cantilever 20 along the extension direction of the cantilever 20.

[0062] In addition, the connection between the upper end of the lifting structure 30 and the mounting portion 71 is detachable, so that the staff can separate the lifting structure 30 from the mounting portion 71 when transporting the lifting device 1, which is convenient for transporting the lifting device 1 and for replacing the lifting structure 30 when it fails.

[0063] Here, optionally, Figure 1 As shown, the cantilever 20 may be an I-beam extending in the horizontal direction, and the grooves on both sides of the I-beam symmetrically extending in the horizontal direction may serve as the guide rail 21 .

[0064] The present disclosure does not limit the structure of the sliding member 70. As an implementation method, Figure 1 As shown, the sliding member 70 may be a hand-pulled sports car, which may be in rolling contact with the guide rail 21 via rollers, thereby facilitating the reduction of resistance when moving along the extension direction of the cantilever 20 .

[0065] As another implementation, the sliding member 70 may also be a sliding block slidably connected to the guide rail 21 .

[0066] In addition, the present disclosure does not limit the type of the lifting structure 30, as long as it can make the valve block 91 rise or fall. As an implementation method, Figure 1As shown, the hoisting structure 30 can be a hand chain hoist. When the hoisting structure 30 is a hand chain hoist, the staff can pull different chains of the hand chain hoist to control the hook of the hand chain hoist (i.e., the lower end of the hoisting structure 30 mentioned above) to rise or fall, and can also hold multiple chains of the hand chain hoist at the same time to drag the cantilever 20 to rotate, or drag the sliding member 70 to move along the extension direction of the guide rail 21, which is very convenient to operate.

[0067] As another implementation, the lifting structure 30 may also be a lever hoist or a movable pulley block.

[0068] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0069] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0070] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A lifting device for a hydraulic component of a wind turbine generator set, characterized in that: include: A support structure extending in a vertical direction, wherein the lower end of the support structure is used to be supported on a main frame of the wind turbine generator set and is detachably connected to a lifting lug on the main frame; A cantilever extending in the horizontal direction, one end of the cantilever being rotatably connected to the upper end of the support structure around a rotation axis extending in the vertical direction; A hoisting structure, wherein the upper end of the hoisting structure is movably connected to the cantilever along the extension direction of the cantilever, and the lower end of the hoisting structure is used to be detachably connected to the valve block of the hydraulic assembly of the wind turbine set, and the hoisting structure is constructed to enable the valve block to rise or fall.

2. The lifting device according to claim 1, characterized in that: The supporting structure comprises a connecting seat and a column, the lower end of the column is connected to the connecting seat, and the upper end of the column is connected to the cantilever; The bottom of the connecting seat is provided with a groove with an opening facing downwards, the groove is used for the ear to be inserted and engaged with the ear, and the connecting seat is formed with a first through hole and a second through hole, the first through hole and the second through hole are arranged opposite to each other and are both connected to the groove; The lifting device further includes a locking rod, which can pass through the first through hole, the lifting ear and the second through hole in sequence.

3. The lifting device according to claim 2, characterized in that: A stopper is provided at the first end of the locking rod, and the stopper protrudes outwardly from the locking rod along the radial direction of the locking rod; A through hole extending in the radial direction of the locking rod is formed at the second end of the locking rod, and the lifting device further includes a stopper, which is passed through the through hole.

4. The lifting device according to claim 2, characterized in that: The support structure also includes a support base connected to the lower end of the connecting base, the support base is used to support the main frame of the wind turbine set, the interior of the support base has a accommodating space for accommodating part of the lifting ear, the groove is connected to the accommodating space, and the projection area of ​​the accommodating space along the vertical direction is larger than the projection area of ​​the groove along the vertical direction.

5. The lifting device according to claim 2, characterized in that: The first through holes and the second through holes are both provided in plurality, the plurality of the first through holes are arranged at intervals along the vertical direction, the plurality of the second through holes are arranged at intervals along the vertical direction, and the plurality of the first through holes and the plurality of the second through holes correspond to each other one by one.

6. The lifting device according to claim 1, characterized in that: The lifting device also includes a rotating shaft extending along the vertical direction, one end of the cantilever is fixedly connected to the rotating shaft, and the rotating shaft is detachably connected to the upper end of the supporting structure.

7. The lifting device according to claim 6, characterized in that: A first mounting plate and a second mounting plate are provided at the upper end of the support structure, the first mounting plate and the second mounting plate are spaced apart in the vertical direction, the first mounting plate is fixedly connected to the support structure, and the second mounting plate is detachably mounted to the support structure; The first mounting plate is provided with a first mounting hole, and the second mounting plate is provided with a second mounting hole directly opposite to the first mounting hole; The middle portion of the rotating shaft is fixedly connected to the cantilever, and the middle portion of the rotating shaft is located between the first mounting plate and the second mounting plate, one end of the rotating shaft is rotatably inserted into the first mounting hole, and the other end of the rotating shaft is rotatably inserted into the second mounting hole.

8. The lifting device according to claim 7, characterized in that: A flange plate is also provided at the upper end of the support structure. The flange plate is fixedly connected to the support structure and is located between the first mounting plate and the second mounting plate. The second mounting plate is detachably connected to the flange plate via fasteners.

9. The lifting device according to any one of claims 1 to 8, characterized in that: The cantilever is provided with a guide rail extending along the extension direction of the cantilever, and the lifting device also includes a sliding member, which is slidably installed on the guide rail. The sliding member is provided with a mounting portion, and the upper end of the lifting structure is detachably connected to the mounting portion.

10. The lifting device according to any one of claims 1 to 8, characterized in that: The hoisting structure is a hand chain hoist.

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