Blade adjusting structure and method of fan blade mounting equipment

Abstract

The invention discloses a blade adjusting structure of fan blade mounting equipment. The blade adjusting structure comprises a base, a clamp supporting seat, two clamps and a driving part, the base is a circular ring with an opening, the outer side of the clamp supporting seat is connected with the inner side of the base in a matched mode, the clamp supporting seat comprises two installation seats, the two clamps are arranged on the inner sides of the two installation seats respectively, each clamp comprises a linkage adjusting mechanism, a first clamping arm and a second clamping arm, the linkage adjusting mechanism comprises a connecting rod, a sliding rod and a reset spring, and the first clamping arm and the second clamping arm are hinged to each other. One end of the connecting rod is hinged to the hinged position of the first clamping arm and the second clamping arm, the other end of the connecting rod is hinged to the inner side of the corresponding mounting base, the connecting rod can rotate around the hinged end on the mounting base, the sliding rod comprises a first moving end and a second moving end, and the connecting rod, the sliding rod and the reset spring jointly form a triangular linkage structure. Under the action of the linkage adjusting mechanism, the position of the blade is finely adjusted, so that the clamp can better retreat, and the hoisting process is smoother.

Description

Technical Field

[0001] The present invention relates to the technical field of marine engineering equipment, and in particular to a blade adjustment structure and an adjustment method for a fan blade installation device. Background Art

[0002] With the rapid development of marine renewable energy, the scope of offshore wind power development has gradually expanded from shallow offshore to deep sea. Offshore wind turbines are devices that use ocean wind energy to convert into electrical energy. They are usually composed of wind turbine blades, nacelles, towers and foundations. Among them, the foundation is used to support the entire wind turbine to ensure its stability. The tower connects the foundation and the nacelle to support the nacelle and wind blades. The nacelle is located at the top of the tower and contains a generator, gearbox and control system, which is responsible for converting wind energy into electrical energy. The wind blades are fixed to the nacelle and rotated by wind energy. The kinetic energy of the wind blades is converted into electrical energy through the transmission device.

[0003] The installation of offshore wind turbine blades is one of the key links in the installation of the entire wind turbine. As the capacity of wind turbines continues to increase, the size of wind turbine blades is also gradually increasing. Blade clamping devices are needed in wind power generation to facilitate the installation and fixation of blades. However, due to the long length, heavy weight, and complex shape of the blades, as well as the uncertainty of the offshore environment, the blades need to be placed and transported through specific blade support equipment before installation. When entering the lifting operation, the blade lifting clamping device must be used to replace it before the blade lifting operation can be carried out.

[0004] To solve the above problems, a Chinese invention patent with publication number CN115215192A proposes a technical solution for an adaptive integrated device to solve the problem that blade storage and assembly require a variety of specific tools. First, the adaptive integrated device for working conditions between blades is hoisted to automatically adjust the blades from a horizontal state to a sideways state, and then they are lifted at the same time. When the blades are installed, the crane slightly loosens the hook, and the adaptive integrated device for working conditions between blades and the blade root are stored a certain distance below the hoisting device to separate the device from the blade. Then the device moves along the long axis of the blade and finally detaches from the blade.

[0005] However, this solution still has the following problems: the blade clamping structure is formed by upper and lower contour plates, and the clamping structure is relatively fixed, making it difficult to adapt to wind turbine blades of different sizes and shapes, and has low adaptability; and it is only clamped at the root of the blade, which can easily cause the blade to shift or loosen during transportation and lifting, and the clamping stability needs to be improved; in addition, after the blade aerial lifting operation is completed, the adaptive integrated device needs to be detached from the blade axially, and the boom of the lifting equipment requires a longer adjustment space, which is not conducive to improving the lifting efficiency of the lifting equipment.

[0006] Therefore, further research and development is needed to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0007] In order to solve the technical problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a blade adjustment structure and adjustment method for a fan blade installation device. Under the action of the linkage adjustment mechanism, the present invention fine-tunes the position of the blade so that the clamp can be better retracted, thereby ensuring a smoother hoisting process.

[0008] The object of the present invention is achieved through the following technical solutions: a blade adjustment structure of a fan blade installation device, comprising a base, a clamp support seat, two clamps and a driving component for driving the clamps; the base is a circular ring with an opening, the outer side of the clamp support seat is matched and connected with the inner side of the base, the clamp support seat comprises two mounting seats, the two clamps are respectively arranged on the inner sides of the two mounting seats, the clamp comprises a linkage adjustment mechanism and a first clamp arm and a second clamp arm hinged to each other, the linkage adjustment mechanism comprises a connecting rod, a sliding rod and a reset spring, one end of the connecting rod is hinged to the hinge of the first clamp arm and the second clamp arm, the connecting rod The other end of is hinged to the inner side of the mounting seat corresponding thereto, and the connecting rod can rotate around the hinged end on the mounting seat, and the sliding rod includes a first movable end and a second movable end, the first movable end is slidably connected to the rod body of the connecting rod, and the second movable end is slidably connected to the inner side of the mounting seat corresponding thereto and is transmission connected to one end of the return spring, and the other end of the spring is fixed, and the connecting rod, the sliding rod and the return spring together form a triangular linkage structure, and the restoring force of the return spring can drive the second movable end to slide in the opening direction of the base; the driving component includes a second driving component transmission connected to the second clamping arm.

[0009] Specifically, the rod body of the connecting rod is provided with a snap-in groove extending axially toward the opening of the base, and the first movable end of the sliding rod is snap-fitted and matched with the snap-in groove and slidably connected to each other; the inner sides of the two mounting seats are respectively provided with slide grooves extending axially toward the opening of the base, and the second movable end of the sliding rod slides in the slide grooves of the mounting seats.

[0010] Further, the engaging slide includes a main slide and two auxiliary slides located on both sides of the main slide, the cross-section of the auxiliary slide is a T-shape that is wide inside and small outside, and a row of rollers is provided on the bottom surface of the auxiliary slide; the first movable end is provided with a roller and two T-shaped sliders arranged on both sides of the roller; the roller is correspondingly slidably connected to the main slide, and the T-shaped slider is correspondingly slidably connected to the auxiliary slide; and / or, the second movable end of the sliding rod is slidably connected to the slide of the mounting seat through the sliding seat; and / or, the other end of the reset spring is fixedly connected in the slide of the mounting seat.

[0011] Specifically, the second clamping arm includes two bent plates and a driving connecting shaft, wherein the bent plates are>

[0012] The driving connecting shaft simultaneously passes through the bending parts of the two bending plates to connect the two bending plates, and the transmission end of the second driving member is hinged to the driving connecting shaft.

[0013] Specifically, the clamp further includes a hinge shaft, the first clamp arm and the second clamp arm are hinged via the hinge shaft, and one end of the connecting rod of the linkage adjustment mechanism is hinged to the hinge shaft.

[0014] Specifically, there are two linkage adjustment mechanisms, which are respectively located at two ends of the hinge shaft.

[0015] Furthermore, the clamp also includes a first clamp and a second clamp. The first clamp, the first clamp arm, the second clamp arm and the second clamp are hinged in sequence. The first clamp is close to the opening of the base, and the second clamp is far away from the opening of the base.

[0016] Specifically, the first clamping arm includes a connecting block provided with an insertion port, the insertion port includes a main slot and two sub-slots located on both sides of the main slot, the corresponding two side walls of the sub-slot are respectively concave to form a limiting slot, and the corresponding two side walls of the limiting slot are respectively provided with a row of rollers; the first clamping hand includes a first clamping plate and a telescopic rod and a sub-rod connected to the first clamping plate, the corresponding two side walls of the sub-rod are provided with limiting blocks, the sub-rod is matched and connected to the sub-slot, and the telescopic rod is connected to the main slot; the driving component also includes a first driving component that is transmission-connected to the first clamping arm.

[0017] The present invention provides another technical solution to the above technical problem, a blade adjustment method for a fan blade installation device, the steps of which are:

[0018] S1. The blade adjustment structure of the fan blade installation device is placed with the opening of the base facing upward, and the rotation angle of the base is defined as 0° at this time. The blade to be installed is placed vertically on the blade adjustment structure, and the two clamps clamp the blade;

[0019] S2. The lifting device lifts the blade adjustment structure together with the blade;

[0020] S3. When the nacelle is hoisted to the top of the tower and docked, the blade adjustment structure is rotated 90° so that the opening of the base faces the horizontal direction and the blade turns horizontally;

[0021] S4. The blade is docked with the nacelle, and after the docking is completed, the clamp of the blade adjustment structure withdraws from the side of the blade.

[0022] Furthermore, in the above step S3, after the blade adjustment structure rotates 90°, the blade is pressed on the clamp below, and the first clamp arm and the second clamp arm below are forced to sink, the connecting rod and the sliding rod of the linkage adjustment mechanism sink and tilt, the second movable end of the sliding rod is away from the opening of the base, and the return spring is stretched; the second driving member connected to the clamp below the blade is started to push the second clamp arm of the clamp below the blade, the force applied to the connecting rod connected to it is reduced, and the pressure applied by the connecting rod to the sliding rod is also reduced accordingly, and the restoring force of the return spring drives the second movable end of the sliding rod to slide toward the opening of the base, and the position change of the second movable end of the sliding rod affects the first movable end of the sliding rod to move upward on the rod body of the connecting rod, thereby driving the connecting rod to rotate around the hinged end on the mounting seat toward the opening direction of the base, thereby realizing the above-mentioned clamp and the blade clamped by it are slightly delivered toward the opening of the base.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] 1. The blade adjustment structure and adjustment method of the fan blade installation device of the present invention can automatically adjust the clamping position according to the size and outer contour of different fan blades, and accurately adapt to blades of different sizes and shapes.

[0025] 2. The blade adjustment structure of the fan blade mounting device of the present invention adopts a linkage adjustment mechanism coordinated with a connecting rod. When blades of different proportions are replaced, the blades generate pressure on the linkage adjustment mechanism, pressing it toward the lower mounting seat. The linkage adjustment mechanism as a whole forms a triangular force-bearing structure. The clamping structure will be provided with a variety of pressure sensing devices. The telescopic drive device is controlled to extend and push the clamping arm according to the detected blade pressure. Under the synchronous action of the linkage adjustment mechanism, the connecting rod rotates upward and toward the opening of the base, which is equivalent to providing auxiliary lifting force.

[0026] 3. When the blade adjustment structure of the fan blade installation device of the present invention and the blades it clamps are hoisted together to the idling docking stage, the clamp rotates the blade to a horizontal direction in the air to prevent the suspension rope from interfering with the blade, thereby assisting in the hoisting and installation of the blade. When it is turned to a horizontal state, similarly, the blade exerts pressure on the linkage adjustment mechanism, pressing it toward the lower mounting seat. Under the synchronous action of the linkage adjustment mechanism, the connecting rod rotates toward the opening of the base, fine-tuning the position of the blade so that the clamp can be better retracted and withdrawn from the side of the blade. This ensures that the hoisting process is smoother, the stable state of the blade is maintained, the displacement caused by the swing or vibration of the suspension rope is reduced, and the blade can be accurately docked to the predetermined position. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the blade adjustment structure of the fan blade mounting device of this embodiment.

[0028] Figure 2 for Figure 1 A partial enlarged view of part A.

[0029] Figure 3 This is a structural schematic diagram of the connection relationship between the clamp and the driving component of the blade adjustment structure of the fan blade installation device of this embodiment.

[0030] Figure 4 This is a structural schematic diagram of the connection relationship between the mounting support seat and the clamp of the blade adjustment structure of the fan blade mounting device of this embodiment.

[0031] Figure 5 This is a schematic structural diagram of a clamp of a blade adjustment structure of a fan blade mounting device according to this embodiment.

[0032] Figure 6 It is a structural schematic diagram of the linkage adjustment mechanism of the blade adjustment structure of the fan blade mounting device of this embodiment.

[0033] Figure 7 It is a structural schematic diagram from another perspective and a partial cross-sectional diagram of the linkage adjustment mechanism of the blade adjustment structure of the fan blade mounting device of this embodiment.

[0034] In the figure: 10-base; 12-opening; 14-tooth protrusion; 20-support seat; 23-connector; 25-upper mounting seat; 27-lower mounting seat; 29-slide; 290-roller; 30-clamp; 40-upper clamp; 50-lower clamp; 51-first clamp; 513-first clamp; 515-telescopic rod; 517-second rod; 5170-limiting block; 52-second clamp; 53-first clamp arm; 532-first connecting shaft; 534-connecting Connecting block; 5341-main slot; 5342-auxiliary slot; 5343-limiting slot; 54-second clamping arm; 541-bending plate; 543-second connecting shaft; 545-driving connecting shaft; 55-hinge shaft; 561-connecting rod; 5610-slide groove; 5613-main slide groove; 5615-auxiliary slide groove; 56150-roller; 563-sliding rod; 565-slide seat; 567-reset spring; 63-first driving member; 65-second driving member. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, the technical solutions and advantages of the invention are further described in detail below in conjunction with the accompanying drawings and embodiments. The mechanisms or methods not described in the present invention can refer to the prior art. The specific structure and characteristics of the present invention are described below by way of example, which should not constitute any limitation to the present invention. At the same time, any of the technical features mentioned below (including implicit or disclosed), as well as any technical features directly displayed or implied in the figure, can continue to be arbitrarily combined or deleted between these technical features, so as to form more other embodiments that may not be directly or indirectly mentioned in the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0036] like Figure 1-7 As shown, the blade adjustment structure of the fan blade installation device of this embodiment includes a base 10, a clamp support seat 20, two clamps and a driving component for driving the clamps.

[0037] refer to Figure 1 Specifically, the base 10 is a ring with an opening 12, and a tooth protrusion 14 is provided on its outer wall. The tooth protrusion 14 is used to connect with the gear of the base of the blade installation device. The base can drive the base 10 to rotate 0-90 degrees through the gear, so as to select a suitable installation angle. In this embodiment, preferably, when the blade is installed in this embodiment, the opening 12 of the base 10 faces upward to clamp the blade. At this time, the rotation angle of the base 10 is defined as 0 degrees, and it is always maintained at 0 degrees during the hoisting process. When the blade is installed in the fan, the base 10 is rotated 90 degrees so that the opening 12 of the base 10 faces the horizontal plane to install the blade.

[0038] The fixture support seat 20 is U-shaped, and the outer side of the fixture support seat 20 is matched and connected with the inner side of the base 10. The fixture support seat 20 includes a connecting piece 23, an upper mounting seat 25 and a lower mounting seat 27. The upper mounting seat 25 and the lower mounting seat 27 are respectively connected to the two ends of the connecting piece 23. The inner sides of the upper mounting seat 25 and the lower mounting seat 27 are respectively provided with a slide groove 29 extending axially toward the opening 12 of the base 10. A row of rollers 290 are provided at the bottom of the slide groove to reduce friction during sliding.

[0039] The two clamps 30 are respectively an upper clamp 40 and a lower clamp 50. The upper clamp 40 is connected to the inner side of the upper mounting seat 25 through a driving component, and the lower clamp 50 is connected to the inner side of the lower mounting seat 27 through a driving component. The upper clamp 40 and the lower clamp 50 are arranged opposite to each other. The upper clamp 40 and the lower clamp 50 have the same structure and are mirror images of each other. The upper clamp 40 includes a first clamp, a second clamp, a first clamp arm, a second clamp arm, a hinge shaft and a linkage adjustment mechanism, and the lower clamp 50 includes a first clamp 51, a second clamp 52, a first clamp arm 53, a second clamp arm 54, a hinge shaft 55 and a linkage adjustment mechanism.

[0040] refer to Figure 5, taking the following clamp 50 as an example, the first clamp arm 53 includes a first connecting shaft 532 and two connecting blocks 534, and the two connecting blocks 534 are connected by the connecting shaft to form an H shape. The same end of the two connecting blocks 534 is respectively provided with an insertion port for connecting the first clamping hand 51, and the other end of the two connecting blocks 534 is a hinged end. The insertion port includes a main slot 5341 and two auxiliary slots 5342 located on both sides of the main slot 5341. The corresponding two side walls of the auxiliary slot 5342 are respectively concave to form a limiting groove 5343, and the corresponding two side walls of the limiting groove 5343 are respectively provided with a row of rollers for reducing friction during sliding. The first clamping hand 51 includes a first clamping plate 513, two telescopic rods 515 and four auxiliary rods 517, and the two telescopic rods 515 and the four auxiliary rods 517 are respectively connected to the same side of the first clamping plate 513. A pair of rods 517 are respectively arranged on both sides of the telescopic rod 515, and the corresponding two side walls of the pair of rods 517 are provided with limit blocks 5170 corresponding to the limit slots 5343. The pair of rods 517 are correspondingly inserted into the secondary slots 5342, and the telescopic rod 515 is correspondingly inserted into the main slots 5341. The telescopic rod 515 can adjust the distance between the first clamping hand 51 and the first clamping arm 53 to be suitable for the installation of blades of different sizes and shapes. The second clamping arm 54 includes two bending plates 541, a second connecting shaft 543 and a driving connecting shaft 545. The bending plates 541 are in a > shape, and the driving connecting shaft 545 simultaneously penetrates the bending parts of the two bending plates 541 to connect the two bending plates 541. The second connecting shaft 543 and the hinge shaft 55 respectively penetrate the two ends of the two bending plates 541 to connect the two bending plates 541. The hinge shaft 55 also passes through the hinge ends of the two connecting blocks 534 of the first clamp arm 53, and hinges the first clamp arm 53 and the second clamp arm 54. The second clamp 52 includes two second clamps and a support belt corresponding to each clamp. The two second clamps are respectively hinged to the second connecting shaft 543, so that the second clamp 52 is hinged to the second clamp arm 54. One end of the support belt is connected to the hinge end of the second clamp, and the other end of the support belt is connected to the connecting piece 23 of the clamp support seat 20. The first clamp 51 is close to the opening 12 of the base 10, and the second clamp 52 is close to the connecting block 534 of the clamp support seat 20. There are two linkage adjustment mechanisms, each of which includes a connecting rod 561, a sliding rod 563, a sliding seat 565 and a reset spring 567. The same end of the connecting rod 561 of the two linkage adjustment mechanisms is hinged to the two ends of the hinge shaft 55, respectively, and the other end of the connecting rod 561 is hinged to the inner side of the lower mounting seat 27, and the connecting rod 561 can rotate around the end hinged to the lower mounting seat 27. The rod body of the connecting rod 561 is provided with a snap-in slide groove 5610 extending axially toward the opening 12 of the base 10, and the snap-in slide groove 5610 faces the lower mounting seat 27. The snap-in slide groove 5610 includes a main slide groove 5613 and two auxiliary slide grooves 5615 located on both sides of the main slide groove 5613. The cross section of the auxiliary slide groove 5615 is a T-shaped one that is wide inside and small outside, and is used to snap-in the matching slider, and is not easy to be separated.A row of rollers 56150 are provided on the bottom surface of the secondary chute 5615 to reduce friction during sliding. The sliding rod 563 includes a first moving end and a second moving end, and the first moving end is provided with a roller and two T-shaped sliders arranged on both sides of the roller. The roller corresponds to the main chute 5613 for sliding connection, and the T-shaped slider corresponds to the secondary chute 5615 for sliding connection, so that the first moving end is slidably connected with the inserted chute 5610. The second moving end is provided with a roller, which is hinged with a slide seat 565, and the slide seat 565 is arranged in the chute of the lower mounting seat 27. The sliding rod 563 drives the slide seat 565 to slide in the chute of the lower mounting seat 27. The reset spring 567 is arranged in the chute of the lower mounting seat 27, one end of which is transmission-connected with the slide seat 565, and the end is the free end of the reset spring 567, and the other end of the reset spring 567 is fixedly connected with the chute of the lower mounting seat 27, and the end is the fixed end of the reset spring 567. The restoring force of the return spring 567 can drive the slide seat 565 to slide toward the opening 12 of the base 10, thereby driving the second movable end of the slide rod 563 to slide in the slide groove of the lower mounting seat 27. The connecting rod 561, the slide rod 563 and the return spring 567 together form a linkage structure similar to a triangle.

[0041] The first gripper of the upper clamp 40 corresponds to the first gripper of the lower clamp 50, and the two first grippers are close to each other. The bent inner surface of the second gripper arm of the upper clamp 40 is opposite to the bent inner surface of the second gripper arm of the lower clamp 50. The second gripper of the upper clamp 40 corresponds to the second gripper of the lower clamp 50, and the two second grippers are close to each other.

[0042] The driving components are also two groups, including driving components for the upper clamp 40 and driving components for the lower clamp 50. Taking the lower clamp 50 as an example, the driving components for the lower clamp 50 include a first driving component 63 and a second driving component 65. The first driving component 63 is arranged on the inner side of the lower mounting seat 27, and the driving end of the first driving component 63 is hinged to the first connecting shaft 532 of the first clamp arm 53. In this embodiment, preferably, the first driving component 63 is a hydraulic cylinder. The second driving component 65 is arranged on the inner side of the lower mounting seat 27, and the driving end of the second driving component 65 is hinged to the driving connecting shaft 545 of the second clamp arm 54. In this embodiment, preferably, the second driving component 65 is a lower gear rack driving mechanism, which is a driving component with a gear rack inside, and the transmission end is driven to send out and recover through the rotation of the gear rack.

[0043] The steps of hoisting the blades using this embodiment are:

[0044] S1. The blade adjustment structure of the fan blade mounting device of this embodiment is placed with the opening 12 of the base 10 facing upward, and the rotation angle of the base 10 is defined as 0° at this time. The blade to be installed is placed vertically on this embodiment, and the two clamps 30 clamp the blade;

[0045] S2. The lifting equipment lifts the present embodiment together with the blade;

[0046] S3. When the nacelle is hoisted to the top of the tower and docked, the present embodiment is rotated 90° so that the opening 12 of the base 10 is oriented horizontally and the blades are turned horizontally to facilitate docking with the nacelle;

[0047] S4. The blade is docked with the nacelle. After the docking is completed, the clamp 30 of this embodiment withdraws from the side of the blade.

[0048] Among them, in the above step S3, after the present embodiment rotates 90°, the blade can be slightly sent toward the opening 12 of the base 10, making it easier for the blade to dock with the cabin, and easier to exit the present embodiment after the blade docking is completed. Specifically, when the base 10 drives the entire blade adjustment mechanism to rotate 90°, the clamped blade is pressed on the lower clamp 50. At this time, the various components of the lower clamp 50 are: the first clamp 51, the first clamp arm 53, the second clamp arm 54 and the second clamp 52 are forced to sink, the connecting rod 561 and the sliding rod 563 of the linkage adjustment mechanism sink and tilt, the second movable end of the sliding rod 563 is away from the opening 12 of the base 10, and the reset spring 567 is stretched. After that, the gear rack driving mechanism connected to the lower clamp 50 is started to push the second clamp arm 54 of the upper clamp 50, and the force applied to the connecting rod 561 is reduced, and the pressure applied to the sliding rod 563 by the connecting rod 561 is also reduced. The restoring force of the reset spring 567 pulls the slide 565 to drive the second moving end of the sliding rod 563 to slide toward the opening 12 of the base 10. The position change of the second moving end of the sliding rod 563 affects the first moving end of the sliding rod 563 to move upward in the insertion groove 5610 of the connecting rod 561. The second moving end of the sliding rod 563 moves toward the opening 12 and the first moving end moves upward, thereby driving the connecting rod 561 to rotate around its axial end toward the opening 12 of the base 10, and finally realizing the micro-delivery of the lower clamp 50 with the blade clamped by it toward the opening 12 of the base 10.

[0049] Compared with the prior art, this embodiment can automatically adjust the clamping position according to the size and outer contour of different fan blades, and accurately adapt to blades of different sizes and shapes. This embodiment adopts a linkage adjustment mechanism coordinated with a connecting rod. When replacing blades of different proportions, the blades generate pressure on the linkage adjustment mechanism, pressing it toward the lower mounting seat. The linkage adjustment mechanism as a whole forms a triangular force-bearing structure. The clamping structure will be provided with a variety of pressure sensing devices. According to the detected blade pressure, the telescopic drive device is controlled to extend and push the clamp arm. Under the synchronous action of the linkage adjustment mechanism, the connecting rod rotates upward and toward the opening of the base, which is equivalent to providing auxiliary lifting force.

[0050] Furthermore, when this embodiment and the blades it clamps are hoisted together to the idling docking stage, the clamp rotates the blade to a horizontal direction in the air to prevent the suspension rope from interfering with the blade, thereby assisting in the hoisting and installation of the blade. When it is turned to a horizontal state, the blade similarly exerts pressure on the linkage adjustment mechanism, pressing it toward the lower mounting seat. Under the synchronous action of the linkage adjustment mechanism, the connecting rod rotates toward the opening of the base, fine-tuning the position of the blade so that the clamp can be better retracted and withdrawn from the side of the blade. This ensures that the hoisting process is smoother, the stable state of the blade is maintained, the displacement caused by the swing or vibration of the suspension rope is reduced, and the blade can be accurately docked to the predetermined position.

[0051] It should be noted that this embodiment is a device for horizontally mounting blades at 90°. Therefore, the two mounting seats and two clamps are defined by the positional relationship, namely, the upper mounting seat 25 and the lower mounting seat 27, and the upper clamp 40 and the lower clamp 50. In fact, the upper mounting seat 25 and the lower mounting seat 27 are the same symmetrical components, and the upper clamp 40 and the lower clamp 50 are also the same symmetrical components. Affected by the rotation direction of the base 10, when the positions of the upper clamp 40 and the lower clamp 50 are reversed, the functions are also reversed, and the same is true for the mounting seat and the driving component.

[0052] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. For ordinary technicians in this field, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A blade adjustment structure of a fan blade installation device, comprising a base, a clamp support seat, two clamps and a driving component for driving the clamps; the base is a circular ring with an opening, the outer side of the clamp support seat is matched and connected with the inner side of the base, the clamp support seat comprises two mounting seats, and the two clamps are respectively arranged on the inner sides of the two mounting seats, characterized in that: The clamp includes a linkage adjustment mechanism and a first clamp arm and a second clamp arm hinged to each other, the linkage adjustment mechanism includes a connecting rod, a sliding rod and a return spring, one end of the connecting rod is hinged at the hinge of the first clamp arm and the second clamp arm, the other end of the connecting rod is hinged to the inner side of the corresponding mounting seat, the connecting rod can rotate around the hinge end on the mounting seat, the sliding rod includes a first movable end and a second movable end, the first movable end is slidably connected to the rod body of the connecting rod, the second movable end is slidably connected to the inner side of the corresponding mounting seat and is transmission connected to one end of the return spring, the other end of the spring is fixed, the connecting rod, the sliding rod and the return spring together form a triangular linkage structure, and the restoring force of the return spring can drive the second movable end to slide toward the opening direction of the base; the driving component includes a second driving component transmission connected to the second clamp arm.

2. The blade adjustment structure of the fan blade installation device according to claim 1, characterized in that: The rod body of the connecting rod is provided with a snap-in groove extending axially toward the opening of the base, and the first movable end of the sliding rod is engaged with the snap-in groove and matched with each other and slidably connected; the inner sides of the two mounting seats are respectively provided with slide grooves extending axially toward the opening of the base, and the second movable end of the sliding rod slides in the slide grooves of the mounting seats.

3. The blade adjustment structure of the fan blade installation device according to claim 2, characterized in that: The insertion slide comprises a main slide and two auxiliary slides on both sides of the main slide, the cross section of the auxiliary slide is T-shaped with a wide inside and a small outside, and a row of rollers is arranged on the bottom surface of the auxiliary slide; the first movable end is provided with a roller and two T-shaped sliders arranged on both sides of the roller; the roller is correspondingly slidably connected to the main slide, and the T-shaped slider is correspondingly slidably connected to the auxiliary slide; and / or, The linkage adjustment mechanism further comprises a sliding seat hinged to the second movable end of the sliding rod, and the second movable end of the sliding rod is slidably connected to the sliding groove of the mounting seat through the sliding seat; and / or, The other end of the return spring is fixedly connected in the slide groove of the mounting seat.

4. The blade adjustment structure of the fan blade installation device according to claim 1, characterized in that: The second clamping arm includes two bending plates and a driving connecting shaft, the bending plates are in a > shape, the driving connecting shaft simultaneously passes through the bending parts of the two bending plates to connect the two bending plates, and the transmission end of the second driving member is hinged to the driving connecting shaft.

5. The blade adjustment structure of the fan blade installation device according to claim 1, characterized in that: The clamp further comprises a hinge shaft, the first clamp arm and the second clamp arm are hingedly connected via the hinge shaft, and one end of the connecting rod of the linkage adjustment mechanism is hingedly connected to the hinge shaft.

6. The blade adjustment structure of the fan blade installation device according to claim 5, characterized in that: The linkage adjustment mechanisms are provided with two, which are respectively located at two ends of the hinge shaft.

7. The blade adjustment structure of the fan blade installation device according to claim 1, characterized in that: The clamp further comprises a first clamp and a second clamp, wherein the first clamp, the first clamp arm, the second clamp arm and the second clamp are hinged in sequence, the first clamp is close to the opening of the base, and the second clamp is far from the opening of the base.

8. The blade adjustment structure of the fan blade installation device according to claim 7, characterized in that: The first clamping arm includes a connecting block provided with an insertion port, the insertion port includes a main slot and two sub-slots located on both sides of the main slot, the corresponding two side walls of the sub-slot are respectively concave to form a limiting slot, and the corresponding two side walls of the limiting slot are respectively provided with a row of rollers; the first clamping hand includes a first clamping plate and a telescopic rod and a sub-rod connected to the first clamping plate, the corresponding two side walls of the sub-rod are provided with limiting blocks, the sub-rod is matched and connected to the sub-slot, and the telescopic rod is connected to the main slot; the driving component also includes a first driving component that is transmission-connected to the first clamping arm.

9. A blade adjustment method for a fan blade installation device, characterized in that: The steps are: S1. Place the blade adjustment structure of the fan blade installation device according to any one of claims 1 to 8 with the opening of the base facing upward, define the rotation angle of the base as 0°, and vertically place the blade to be installed on the blade adjustment structure, with the two clamps clamping the blade; S2. The lifting device lifts the blade adjustment structure together with the blade; S3. When the nacelle is hoisted to the top of the tower and docked, the blade adjustment structure is rotated 90° so that the opening of the base faces the horizontal direction and the blade turns horizontally; S4. The blade is docked with the nacelle, and after the docking is completed, the clamp of the blade adjustment structure withdraws from the side of the blade.

10. The blade adjustment method of the fan blade installation device according to claim 9, characterized in that: In the above step S3, after the blade adjustment structure rotates 90°, the blade is pressed on the clamp below, the first clamp arm and the second clamp arm below are forced to sink, the connecting rod and the sliding rod of the linkage adjustment mechanism sink and tilt, the second moving end of the sliding rod is away from the opening of the base, and the return spring is stretched; Start the second driving member that is transmission-connected to the clamp under the blade, push the second clamping arm of the clamp under the blade, reduce the force applied to the connecting rod connected thereto, and the pressure applied by the connecting rod on the sliding rod also decreases accordingly, and the restoring force of the reset spring drives the second movable end of the sliding rod to slide toward the opening of the base, and the position change of the second movable end of the sliding rod affects the first movable end of the sliding rod to move upward on the rod body of the connecting rod, thereby driving the connecting rod to rotate around the hinged end on the mounting seat toward the opening direction of the base, thereby achieving the above-mentioned clamp and the blade it clamps slightly delivered toward the opening of the base.

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