Hoisting device for wind turbine blade installation

Abstract

The utility model relates to wind power generation technical field provides a kind of hoisting device for wind power blade installation, including at least two main girder, vice beam and hoisting component, detachably connected between any two adjacent main girder;Vice beam is located at the both ends of at least two main girders, and detachably connected with the main girder of end portion, and vice beam is arrayed with multiple lifting points along the length direction of itself;Hoisting component includes fixed base, hoisting assembly and hoisting assembly, and fixed base is detachably installed in one of lifting points;Hoisting assembly is detachably connected to fixed base;Hoisting assembly is detachably connected to hoisting assembly.The utility model discards the design idea of integration, and each major function part of hoisting device is designed into independent, detachable module, so that the entire hoisting device can be completely decomposed into standardized module, and the cost and difficulty of sea transport and land transport are reduced.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a hoisting device for installing wind turbine blades. Background Technology

[0002] With the continuous growth of global demand for clean energy, the wind energy industry is developing rapidly, and wind turbine generators are evolving towards higher power and larger sizes. As a result, the size of wind turbine blades has also increased significantly. Currently, the blade length of mainstream models has generally exceeded 80 meters, and the blade length of some large offshore wind turbine generators has even reached the 100-meter level, with a single blade weighing more than 30 tons.

[0003] In early installation operations, the three blades and hub were pre-assembled into a complete wind turbine on the ground before being hoisted as a whole. However, for current large-megawatt units, the enormous size and weight of the wind turbine present many challenges to this overall hoisting method: First, transportation is severely limited, as the huge wind turbine is almost impossible to transport over long distances by land; second, high-altitude operations are risky, as it is difficult to guarantee the installation accuracy when docking the massive wind turbine with the nacelle at high altitude.

[0004] Therefore, single-blade hoisting technology, which involves hoisting each blade individually onto the high-altitude hub for installation, has become the mainstream solution for large wind turbine installations due to its greater flexibility and lower dependence on environmental conditions. However, the increase in blade length inevitably leads to a corresponding increase in the structural length of the specialized hoisting equipment used for single-blade hoisting. This presents new technical challenges for the single-blade hoisting equipment itself during transportation and relocation.

[0005] Existing single-blade lifting devices are mostly one-piece structures, which have the following significant drawbacks during transportation: Land transport faces severe restrictions: the overall length and width of the lifting equipment often exceed the regulations for conventional road transport, constituting oversized and overweight cargo. This not only increases transportation costs (such as requiring specialized escort vehicles and route planning), but also necessitates cumbersome special transport approval procedures, prolongs the project preparation period, and results in extremely poor traffic capacity when traversing complex road conditions such as bridges and tunnels.

[0006] Maritime transport is costly and inconvenient: When maritime transport is required (especially for project exports), existing spreader rigs cannot fit into standard international containers such as 40-foot high cube (40GP) due to their large size. This forces the transport to rely on expensive specialized containers (such as open containers and flat rack containers) or bulk carriers, which not only dramatically increases shipping costs and management difficulties but also raises the risk of damage to spreader rigs during loading, unloading, and transport. Utility Model Content

[0007] This utility model provides a hoisting device for installing wind turbine blades, which solves at least one of the above-mentioned technical defects in the prior art. It abandons the integrated design concept and designs each of the major functional parts of the hoisting device as an independent and detachable module, so that the entire hoisting device can be completely decomposed into standardized modules, reducing the cost and difficulty of sea and land transportation.

[0008] This utility model provides a hoisting device for installing wind turbine blades, comprising: At least two main beams, with any two adjacent main beams being detachably connected; A secondary beam is located at both ends of at least two of the main beams and is detachably connected to the main beams at the ends. The secondary beam has multiple lifting points arranged in an array along its own length direction. Lifting components, including: A mounting base, detachably mounted on one of the lifting points; The lifting assembly is detachably connected to the mounting base; The hoisting assembly is detachably connected to the lifting assembly.

[0009] According to the hoisting device for wind turbine blade installation provided by this utility model, at least one end of each main beam is provided with a connecting flange, and two adjacent connecting flanges are connected by a first fastener.

[0010] According to the hoisting device for wind turbine blade installation provided by this utility model, a plurality of mounting lugs are provided on the main beam located at the end. Each pair of mounting lugs is spaced apart and arranged opposite to each other along the height direction of the main beam, forming an installation space between each pair of mounting lugs. The sub-beam is embedded in the mounting space and connected to the mounting ear plate by a second fastener.

[0011] The hoisting device for wind turbine blade installation provided by this utility model further includes a clamping component, which includes: The mounting base is fixedly mounted on the sub-beam; The mounting beam is rotatably connected to the mounting base; A driving component, one end of which is rotatably connected to the sub-beam and the other end of which is rotatably connected to the mounting beam, is adapted to extend and retract along its own length direction to drive the mounting beam to rotate relative to the mounting base; The pressure plate assembly is detachably connected to the mounting beam and is adapted to cooperate with the lifting assembly to clamp the component to be lifted.

[0012] According to the hoisting device for wind turbine blade installation provided by this utility model, the pressure plate assembly includes: The pressure plate base is detachably connected to the mounting beam; A support base is detachably connected to the pressure plate base and is rotatable relative to the pressure plate base; At least one pressure plate body is fixedly mounted on the support base, and at least one of the pressure plate bodies is adapted to cooperate with the hoisting assembly to press the object to be hoisted; A pressure sensor is located at the rotation center of the support base and the pressure plate base, and is used to detect the pressure value applied to the part to be lifted; A pressure regulation system, connected to the control valve of the pressure sensor and the drive unit, is used to adaptively adjust the pressure of the drive unit according to the pressure value detected by the pressure sensor.

[0013] The hoisting device for wind turbine blade installation provided by this utility model also includes main beam legs, which are detachably connected to each of the main beams; And / or, it also includes sub-beam legs, which are spaced apart on the sub-beam and detachably connected to the sub-beam.

[0014] According to the hoisting device for wind turbine blade installation provided by this utility model, the main beam is provided with a mounting base, and the main beam support leg is rotatably connected to the mounting base through a pin, so that the main beam support leg can rotate relative to the main beam to switch between a folded state and an unfolded state.

[0015] According to the hoisting device for wind turbine blade installation provided by this utility model, the hoisting assembly includes a hoist, the top of the hoist is detachably connected to the fixed base by a third fastener, and the bottom of the hoist is detachably connected to the hoisting assembly by a fourth fastener.

[0016] According to the hoisting device for wind turbine blade installation provided by this utility model, the hoisting assembly includes: The lifting arm is detachably connected to the bottom of the hoist via a fourth fastener; The first unhooking component is connected to the lifting arm; The second unhooking component is connected to the lifting arm and is disposed opposite to the first unhooking component at a distance, and the second unhooking component and the first unhooking component restrict the suspension space; A driving member is disposed inside the first unhooking member, adapted to extend out of the first unhooking member, and pass through the suspension space to extend into the second unhooking member; The first sling has one end located in the suspension space and suspended from the drive member.

[0017] The hoisting device for wind turbine blade installation provided by this utility model further includes a second sling, which is detachably connected to the main beam and is adapted to connect to lifting equipment.

[0018] The core design principle of the hoisting device for wind turbine blade installation provided by this utility model is modular reconstruction, breaking down the whole into parts. This solves the problem that traditional large hoisting devices (especially those for ultra-long workpieces such as wind turbine blades) are usually welded or manufactured as a single unit, resulting in enormous dimensions. This leads to extremely difficult transportation, with excessive length and width for land transport and the inability to fit into standard containers for sea transport, resulting in high costs.

[0019] The lifting device is modularized into at least two main beams, allowing for detachable connection between any two adjacent main beams. Secondary beams are located at both ends of the at least two main beams and are detachably connected to the end main beams. The lifting components include a fixed base, a lifting assembly, and a lifting assembly. The fixed base is detachably mounted on one of the lifting points arrayed along the length of the secondary beam. The lifting assembly is detachably connected to the fixed base, and the lifting assembly is detachably connected to the lifting assembly. This design abandons the integrated approach, designing each functional component (main load-bearing, secondary load-bearing, and lifting execution) as an independent, detachable module. This allows the entire lifting device to be completely decomposed into standardized modules, capable of fitting into standard containers such as 40GP, significantly reducing the cost and difficulty of sea and land transportation.

[0020] The lifting components employ a three-tiered modular design, enabling a high degree of functional customization. For example, lifting assemblies (hoops) of different tonnages can be replaced according to the lifting weight; different types of lifting assemblies can be replaced according to the shape of the object being lifted (such as using wide spreader slings to lift vulnerable surfaces, and using special clamps to lift irregularly shaped parts). All these replacements do not require modification of the main frame, making maintenance and upgrades more convenient.

[0021] Furthermore, by combining different numbers of main beams and selecting different secondary beam lifting points, a single device can easily adapt to various components of different lengths and lifting requirements. If any component is damaged, only the corresponding module needs to be replaced; there is no need to scrap the entire device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of a hoisting device for installing wind turbine blades provided in an embodiment of this utility model.

[0024] Figure 2This is one of the partial structural schematic diagrams of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (illustrating hoisting components).

[0025] Figure 3 This is a second partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (illustrating the connecting flange).

[0026] Figure 4 This is the third partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (showing the installation of ear plates).

[0027] Figure 5 This is the fourth partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (showing the installation of ear plates).

[0028] Figure 6 This is the fifth partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (showing the clamping component).

[0029] Figure 7 This is a structural schematic diagram of the pressure plate assembly in the hoisting device for wind turbine blade installation provided in this embodiment of the utility model.

[0030] Figure 8 This is the sixth partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (showing the main beam support leg).

[0031] Figure 9 This is the seventh partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model.

[0032] Figure 10 This is one of the schematic diagrams of the storage state of the hoisting device for wind turbine blade installation provided in the embodiments of this utility model.

[0033] Figure 11 This is the second schematic diagram of the storage state of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model.

[0034] Figure label: 10. Main beam; 11. Connecting flange; 12. First fastener; 13. Mounting lug; 14. Second fastener; 15. Mounting base; 20. Sub-beam; 21. Lifting point; 30. Lifting component; 31. Fixing base; 32. Lifting assembly; 33. Lifting assembly; 331. Lifting boom; 332. First release mechanism; 333. Second release mechanism; 334. Drive mechanism; 335. First sling; 34. Third fastener; 35. Fourth fastener; 40. Clamping component; 41. Mounting base; 42. Mounting beam; 43. Driving component; 44. Pressure plate assembly; 441. Pressure plate base; 442. Support base; 443. Pressure plate body; 444. Pressure sensor; 50. Main beam support leg; 60. Secondary beam support leg; 70. Second lifting strap; 80. Container. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0037] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Figure 1 This is a structural schematic diagram of a hoisting device for installing wind turbine blades provided in an embodiment of this utility model. Figure 2 This is one of the partial structural schematic diagrams of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (illustrating hoisting components).

[0040] See Figure 1 and Figure 2 This utility model provides a hoisting device for installing wind turbine blades, which includes at least two main beams 10, a secondary beam 20, and a hoisting component 30.

[0041] Any two adjacent main beams 10 are detachably connected, and all main beams 10 are detachably connected to form a main beam 10 assembly, which is the core load-bearing skeleton of the entire hoisting device for wind turbine blade installation. Unlike the traditional one-piece long main beam 10, the main beam 10 assembly in this embodiment is designed as a segmented structure. It consists of at least two, that is, two or more independent main beams 10. These main beams 10 are detachably connected by bolts, pins, or other fasteners. Detachability means that the total length of the main beam 10 assembly composed of at least two main beams 10 is variable. During transportation, the modular main beam 10 assembly can be disassembled into multiple shorter main beams 10, greatly reducing the size of the modular main beam 10 assembly and facilitating loading onto trucks or into containers 80. During operation, the total length of the main beam 10 assembly can be flexibly adjusted by increasing or decreasing the number of main beams 10 according to the needs of the object to be hoisted, such as wind turbine blades of different lengths.

[0042] Sub-beams 20 are located at both ends of at least two main beams 10 and are detachably connected to the end main beams 10. Sub-beams 20 typically refer to crossbeams installed at both ends of the main beams 10, giving the entire lifting device a "H" or "I" shaped frame. Sub-beams 20 are also detachably connected to the two outermost main beams 10 of the main beam assembly; this detachability further enhances the modular transport capability of the entire lifting device.

[0043] Each sub-beam 20 has multiple lifting points 21 arranged in an array along its length. These lifting points 21, such as pre-drilled pin holes and lugs, are arrayed, meaning they are regularly arranged along the length of the sub-beam 20, providing flexibility in lifting position. Operators can select the most suitable lifting point 21 to install subsequent lifting components 30 based on the center of gravity, size, and shape of the object being lifted, thus ensuring a smooth and safe lifting process. This greatly enhances the versatility of the device.

[0044] The lifting component 30 is a functional module that performs specific lifting actions. The lifting component 30 includes a fixed base 31, a lifting assembly 32, and a lifting assembly 33. The fixed base 31 connects the beam to the lifting assembly 32 and can be understood as a transition piece or base. The fixed base 31 is detachably installed at one of the lifting points 21, meaning it is installed at a selected lifting point 21 on the sub-beam 20. The lifting assembly 32 is detachably connected to the fixed base 31 and is the core component providing lifting force. In practical applications, the lifting assembly 32 usually refers to a hoist, such as an electric hoist or a manual hoist. The top of the hoist is detachably connected to the fixed base 31 via a third fastener 34, and the bottom of the hoist is detachably connected to the lifting assembly 33 via a fourth fastener 35. That is, the lifting assembly 33 is detachably connected below the lifting assembly 32 and is the part that ultimately comes into direct contact with the object being lifted. The lifting assembly 33 typically refers to a flat sling, wire rope, special clamp, or release system, etc.

[0045] The lifting component 30 adopts a three-level modular design, enabling a high degree of functional customization. For example, different tonnage lifting assemblies 32 (hoops) can be replaced according to the lifting weight; different types of lifting assemblies 33 can be replaced according to the shape of the object being lifted (such as using a wide spreader sling to lift vulnerable surfaces, or using special clamps to lift irregularly shaped parts). All these replacements do not require modification of the main frame, making maintenance and upgrades more convenient.

[0046] During factory shipment or relocation, the hoisting equipment used for wind turbine blade installation is in a completely disassembled state. Multiple main beams 10, secondary beams 20, and various hoisting components 30 (fixing, lifting, and hoisting assemblies 33) are sorted and placed. All these modules are loaded into one or more standard containers 80 or placed on standard flatbed trucks for transportation, eliminating the risk of exceeding length or width limits.

[0047] After the hoisting equipment for wind turbine blade installation arrives at the work site, the staff determines the total length of the hoisting equipment and the position of hoisting point 21 based on the parameters of the part to be hoisted (e.g., an 85-meter-long wind turbine blade).

[0048] Take out the required number of main beams 10, and connect them end to end using bolts or other fasteners to assemble a main beam 10 assembly of the predetermined length. Install two secondary beams 20 at each end of the main beam 10 assembly to form a stable "H"-shaped frame.

[0049] Then, according to the lifting point 21 scheme, the fixing seat 31 is installed on the designated lifting point 21 of the sub-beam 20. Next, the lifting assembly 32 (such as an electric hoist) is connected to the fixing seat 31. Finally, the lifting assembly 33 (such as nylon slings and a release system) is connected to the hoist's hook. At this point, a lifting device customized for wind turbine blade installation for this task is assembled.

[0050] During the hoisting operation: A large crane (such as a crawler crane) lifts the assembled hoisting device for wind turbine blade installation. Operators control the crane to move the hoisting device above the component to be hoisted. The hoisting assembly 33 (sling) is lowered via the hoisting assembly 32 (crank), surrounding and securing the component. The crane, working in conjunction with the hoisting assembly 32 within the hoisting device, smoothly lifts the component off the ground and moves it to the installation position.

[0051] After the work is completed, the hoisting device used for wind turbine blade installation is disassembled in the reverse order of assembly and restored to a modular state for transport to the next work site.

[0052] It is understandable that the core design principle of the hoisting device for wind turbine blade installation provided in this embodiment of the invention is to break down the whole into parts and reconstruct it modularly. This solves the problem that traditional large hoisting devices (especially those for ultra-long workpieces such as wind turbine blades) are usually welded or manufactured as a whole, resulting in huge dimensions. This leads to extremely difficult transportation, with oversized and overweight items that cannot be loaded into standard 80-foot shipping containers by sea, resulting in high costs.

[0053] The hoisting device for wind turbine blade installation provided in this embodiment of the invention is modularized into at least two main beams 10, allowing any two adjacent main beams 10 to be detachably connected. A secondary beam 20 is located at both ends of the at least two main beams 10 and is detachably connected to the end main beams 10. The hoisting component 30 includes a fixed base 31, a lifting assembly 32, and a hoisting assembly 33. The fixed base 31 is detachably mounted on one of the lifting points 21 arranged in an array along the length of the secondary beam 20. The lifting assembly 32 is detachably connected to the fixed base 31, and the hoisting assembly 33 is detachably connected to the lifting assembly 32. This design abandons the integrated approach, designing each of the major functional parts of the hoisting device (main load-bearing, secondary load-bearing, and hoisting execution) as independent, detachable modules. This allows the entire hoisting device to be completely decomposed into standardized modules, enabling it to fit into standard containers such as 40GP, significantly reducing the cost and difficulty of sea and land transportation.

[0054] Furthermore, by combining different numbers of main beams 10 and selecting different secondary beams 20 and lifting points 21, a single device can easily adapt to various lengths and lifting requirements of components to be lifted. If any component is damaged, only the corresponding module needs to be replaced; there is no need to scrap the entire device.

[0055] Figure 3 This is a second partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (illustrating the connecting flange).

[0056] Continue reading Figure 1 And see also Figure 3In some embodiments of this utility model, at least one end of each main beam 10 is provided with a connecting flange 11, and two adjacent connecting flanges 11 are connected by a first fastener 12; thus realizing the disassembly and reassembly of the structure to solve the problems of transportation and storage.

[0057] By transforming a large, monolithic structure (main beam 10) into multiple detachable modular units, the individual main beams 10 can be assembled into a complete functional main beam 10 when needed using flanges and fasteners (such as bolts), and can be easily disassembled into smaller units for transportation or storage.

[0058] When blades of different lengths or load-bearing requirements need to be adapted, only a portion of the main beam 10 can be replaced, for example, by replacing it with a longer or stronger main beam 10, without having to scrap or remanufacture the entire main beam 10 assembly. If a main beam 10 is damaged, only the damaged main beam 10 needs to be replaced, reducing maintenance and upgrade costs.

[0059] Figure 4 This is the third partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (showing the installation of ear plates). Figure 5 This is the fourth partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (showing the installation of ear plates).

[0060] See Figure 4 and Figure 5 In some embodiments of this utility model, a plurality of mounting lugs 13 are provided on the main beam 10 located at the end. The mounting lugs 13 are made of the same high-strength steel plate as the main beam 10. Each pair of mounting lugs 13 is spaced apart and arranged opposite each other along the height direction of the main beam 10, defining a paired, vertically distributed, face-to-face geometric layout. An installation space is formed between each pair of mounting lugs 13. This mounting space, a slot or recess of a specific shape and size physically enclosed by the mounting lugs 13, is crucial to the connection structure. The pre-designed mounting space allows the secondary beam 20 to be precisely guided and positioned during installation. Once embedded, the secondary beam 20's degrees of freedom outside the connection direction are greatly restricted, ensuring the relative positional accuracy between the main beam 10 and the secondary beam 20.

[0061] The sub-beam 20 is embedded in the installation space and connected to the mounting lugs 13 via a second fastener 14. The second fastener 14 is a high-strength bolt and matching nut or a locking cylindrical pin. The arrangement of two mounting lugs 13 opposite each other forms a typical double shear connection structure. When the second fastener 14 (such as a pin) passes through the two mounting lugs 13 and the sub-beam 20, the load is transferred to the two shear surfaces of the pin.

[0062] Figure 6 This is the fifth partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (showing the clamping component). Figure 7 This is a structural schematic diagram of the pressure plate assembly in the hoisting device for wind turbine blade installation provided in this embodiment of the utility model.

[0063] Continue reading Figure 1 And see also Figure 6 and Figure 7 In some embodiments of this utility model, the hoisting device for installing wind turbine blades further includes a clamping component 40, which includes a mounting base 41, a mounting beam 42, a driving component 43, and a pressure plate assembly 44.

[0064] Mounting base 41 serves as a base and is fixedly mounted on sub-beam 20, providing stable support for the entire clamping component 40. Mounting beam 42 is the main lever arm for transmitting clamping force, and mounting beam 42 and mounting base 41 can be rotatably connected by a pin with a self-lubricating bushing.

[0065] The drive component 43 provides the power for the actuator, such as a hydraulic cylinder or an electric actuator. One end of the drive component 43 is rotatably connected to the sub-beam 20, and the other end is rotatably connected to the mounting beam 42. It can extend and retract along its length to drive the mounting beam 42 to rotate relative to the mounting base 41. The connections between the two ends of the drive component 43 and the corresponding components also employ spherical bearings and pins to ensure flexible rotation and high load-bearing capacity. The drive component 43 can be an electro-hydraulic actuator with a built-in motor, oil pump, and oil cylinder, and its extension and retraction can be controlled by an external electrical signal.

[0066] The pressure plate assembly 44 is an end effector that directly contacts the component being lifted (wind turbine blade). The pressure plate assembly 44 is detachably connected to the mounting beam 42 and is adapted to cooperate with the lifting assembly 33 to clamp the component to be lifted.

[0067] Understandably, the clamping component 40 utilizes the lever principle, and the driving component 43 only requires a small pushing force to generate a huge clamping force at the pressure plate assembly 44 through the mounting beam 42, thus amplifying the force. By controlling the extension and retraction of the driving component 43, the rotation angle of the mounting beam 42 can be precisely controlled, thereby controlling the clamping stroke and final posture of the pressure plate assembly 44.

[0068] The pressure plate assembly 44 is detachably connected to the mounting beam 42, meaning that a matching pressure plate assembly 44 can be quickly replaced according to wind turbine blades of different shapes and curvatures, enhancing the versatility of the hoisting device. The pressure plate assembly 44 includes a metal base plate and a polyurethane buffer layer fixed to the base plate. The surface of the buffer layer is machined with an arc surface that matches the curved surface of the back side of the wind turbine blade to increase the contact area and protect the blade surface from scratches.

[0069] Continue reading Figure 7 In some embodiments of this utility model, specifically, the pressure plate assembly 44 includes a pressure plate base 441, a support base 442, at least one pressure plate body 443, a pressure sensor 444, and a pressure regulating system.

[0070] The pressure plate base 441 is detachably connected to the mounting beam 42, and the support base 442 is detachably connected to the pressure plate base 441. That is, both the pressure plate base 441 and the support base 442 are detachably connected, which continues the modular design of the overall device and facilitates maintenance or replacement of pressure plates of different specifications according to different blades.

[0071] The support base 442 is rotatable relative to the pressure plate base 441: when the pressure plate body 443 contacts the curved surface of the wind turbine blade, the support base 442 can rotate around the rotation center at a small angle, so that the contact surface of the entire pressure plate body 443 can automatically conform to the curved surface of the blade, rather than forming a stress-concentrated point or line contact. In other words, the rotatable support base 442 structure realizes the passive adaptive conformation of the pressure plate to the blade surface, avoiding damage to the blade due to excessive local pressure.

[0072] At least one pressure plate body 443 is fixedly mounted on the support base 442, and at least one pressure plate body 443 is adapted to cooperate with the hoisting assembly 33 to press the part to be hoisted.

[0073] Pressure sensor 444 is located at the rotation center of support base 442 and pressure plate base 441, and is used to detect the pressure value applied to the part to be lifted; pressure sensor 444. By placing pressure sensor 444 at the rotation center, the torque or torsional force generated by the blade reaction force acting on the pressure plate body 443 can be directly and accurately detected. This force value has a precise correspondence with the normal pressure applied to the blade, eliminating the influence of other interfering forces, and the measurement result is reliable.

[0074] The pressure sensor 444 is a pin-type force sensor, which is used as a rotating pin connecting the support 442 and the pressure plate base 441. When the pressure plate body 443 is subjected to force, the pin undergoes shear deformation, and the strain gauge inside the sensor converts the deformation into an electrical signal output that is proportional to the pressure.

[0075] The pressure regulation system is connected to the control valve of the pressure sensor 444 and the drive unit 43, and is used to adaptively adjust the pressure of the drive unit 43 according to the pressure value detected by the pressure sensor 444, together forming a closed-loop feedback control system.

[0076] The pressure regulation system includes a PLC controller, whose input is connected to the signal amplifier of the pin-type force sensor, and whose output is connected to the electro-hydraulic proportional control valve in the hydraulic system of drive component 43. The PLC internally runs a PID control algorithm, comparing the real-time pressure value fed back from the sensor with a target pressure value preset on the human-machine interface (HMI) (e.g., 50kN ± 5kN), and adjusts the control current output to the proportional valve in real time, thereby precisely controlling the extension and retraction of the hydraulic cylinder of drive component 43 and achieving dynamic pressure stability.

[0077] That is, the pressure sensor 444 detects the real-time pressure value; the pressure regulation system (such as PLC or microcontroller) compares the real-time pressure value with the preset safe pressure range. Based on the comparison result, the pressure regulation system sends a command to the control valve (such as a hydraulic proportional valve) of the drive component 43 to increase, decrease, or maintain the output force of the drive component 43 (such as a hydraulic cylinder), thereby achieving adaptive adjustment of the clamping force.

[0078] The closed-loop control system enables proactive adaptive adjustment of the clamping force. Regardless of wind changes, the system can respond quickly and maintain the clamping force within the optimal safe range.

[0079] This utility model provides a hoisting device for wind turbine blade installation. When performing wind turbine blade hoisting operations, the clamping component 40 acts on the blade surface to provide the necessary clamping force to ensure stability.

[0080] When hoisting operations are affected by on-site wind, to ensure safety, a pin sensor installed on the clamping component 40 continuously monitors the actual pressure applied by the clamping component 40 to the blades in real time and transmits this data to the electrical control system. The electrical control program analyzes and judges the real-time pressure value fed back by the pin sensor based on a preset safety pressure threshold and executes the following adaptive adjustment actions: Automatic pressure replenishment: When the wind speed is low or the clamping force is lower than the safety limit due to other factors during the lifting process, the control system will automatically open the solenoid valve inside the accumulator, and the drive component 43 (oil cylinder or hydraulic cylinder) will obtain pressure replenishment, thereby increasing the clamping force on the blade and preventing the blade from sliding or changing its attitude due to insufficient clamping force.

[0081] Automatic pressure relief: When the wind speed suddenly increases and blows the blades upward, the blades will generate an upward force, causing the pressure on the clamping component 40 to increase dramatically. Once the pressure exceeds the safety limit, the control system will immediately open the pressure relief solenoid valve in the drive component 43 (oil cylinder or hydraulic cylinder) to quickly relieve part of the pressure and avoid damage to the blade structure due to excessive stress.

[0082] This closed-loop control process enables dynamic and intelligent adjustment of the blade clamping force under different wind conditions, ensuring the safety and stability of the entire hoisting process.

[0083] Figure 8 This is the sixth partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model (showing the main beam support leg).

[0084] Continue reading Figure 1 And see also Figure 8 The hoisting device for wind turbine blade installation also includes main beam legs 50, which are detachably connected to each main beam 10, allowing complete detachment from the main beam 10 for transportation or long-term storage. The main beam legs 50 support the corresponding main beam 10. Alternatively, the hoisting device for wind turbine blade installation also includes secondary beam legs 60, which are spaced apart from and detachably connected to secondary beams 20, allowing complete detachment from the secondary beams 20 for transportation or long-term storage. The secondary beam legs 60 support the corresponding secondary beams 20. Furthermore, the hoisting device for wind turbine blade installation may include both main beam legs 50 and secondary beam legs 60.

[0085] When the hoisting equipment is not in hoisting operation and is placed on the ground, such as after transportation, before assembly, during storage, or during maintenance, the main beam legs 50 and secondary beam legs 60 can stably support the core components such as the main beam 10 and secondary beam 20 on the ground, maintaining a certain distance from the ground. This prevents the large and irregular beam structure from directly contacting the ground, effectively preventing damage from impacts, wear, or moisture to the beam itself and its precision components, such as hoists, clamping components 40, and sensors.

[0086] Figure 9 This is the seventh partial structural schematic diagram of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model.

[0087] See Figure 9 Furthermore, the main beam 10 is provided with a mounting base 15, and the main beam support leg 50 is rotatably connected to the mounting base 15 through a pin, so that the main beam support leg 50 rotates relative to the main beam 10 to switch between a folded state and an unfolded state.

[0088] Compared to connection methods that require tools to remove multiple bolts for separation, the rotation and folding operation achieved through pins is simpler and faster. On-site personnel do not need to carry heavy tools or handle disassembled bolts and outriggers, avoiding the risk of component loss. This significantly shortens the switching time of the lifting device from the transport state (folded) to the ready-to-work state (unfolded), improving on-site work efficiency and reducing labor costs.

[0089] Continue reading Figure 2In some embodiments of this utility model, the hoisting assembly 33 includes a hoisting arm 331, a first unhooking component 332, a second unhooking component 333, a driving component 334, and a first sling 335 (flat sling).

[0090] The lifting arm 331 is detachably connected to the bottom of the hoist via the fourth fastener 35. The first unhooking component 332 is connected to the lifting arm 331. The second unhooking component 333 is connected to the lifting arm 331 and is spaced apart from the first unhooking component 332. The second unhooking component 333 and the first unhooking component 332 restrict the suspension space.

[0091] The driving member 334 is disposed inside the first unhooking member 332, adapted to extend out of the first unhooking member 332, and passes through the suspension space to extend into the second unhooking member 333. One end of the first sling 335 is located in the suspension space and is suspended by the driving member 334.

[0092] Specifically, the first disengagement member 332 and the second disengagement member 333 form an approximately "U"-shaped support structure, and the structures of the first disengagement member 332 and the second disengagement member 333 are similar. The drive member 334 can be configured as a cylinder or a hydraulic cylinder with an extension rod.

[0093] It should be noted that if the two ends of the sub-beam 20 are respectively equipped with a disengagement system consisting of a first disengagement component 332, a second disengagement component 333, a driving component 334, and a first sling 335, that is, if the disengagement system is respectively installed at both ends of the same first sling 335, then to prevent the first sling 335 from falling and injuring people, one end of the first sling 335 needs to be fixed to the disengagement system.

[0094] When the hoisting assembly 33 is in use, the operator starts the drive component 334 through the control system. The telescopic rod of the drive component 334 extends out from the first unhooking component 332. When the telescopic rod or extension rod of the drive component 334 enters the suspension space, one end of the first sling 335 is hung on the telescopic rod or extension rod. The telescopic rod or extension rod continues to extend until it passes through the second unhooking component 333.

[0095] After hoisting is completed, switch to the unhooking state. The operator can remotely start the drive component 334 through the control system to automatically unhook the first sling 335 in the air, so that the hoisting device and the blade are separated. Specifically, the telescopic rod of the drive component 334 retracts into the first unhooking component 332, and the first sling 335 is disengaged from the suspension state.

[0096] Continue reading Figure 1 , Figure 4 and Figure 6In some embodiments of this utility model, the hoisting device for wind turbine blade installation further includes a second sling 70 (ring sling), which is detachably connected to the main beam 10 and is suitable for connecting lifting equipment. For example, the second sling 70 can be connected to the main beam 10 using one or more of the following structures: shackle, connecting plate, lifting ring, or quick-release flange.

[0097] In use, the second sling 70 is secured to the hook of the lifting equipment via a shackle or flange. When the lifting equipment lifts the hoisting device, the load is transferred to the main beam 10 through the second sling 70.

[0098] Figure 10 This is one of the schematic diagrams of the storage state of the hoisting device for wind turbine blade installation provided in the embodiments of this utility model. Figure 11 This is the second schematic diagram of the storage state of the hoisting device for wind turbine blade installation provided in this embodiment of the utility model.

[0099] Compared with the prior art, the hoisting device for wind turbine blade installation provided in this utility model embodiment, through its unique modular and intelligent design, produces the following significant beneficial effects: It achieves fully modular disassembly, enabling all components to be loaded into a standard 40GP container for ocean transport, resulting in convenient and efficient transportation and reduced logistics costs. It solves the problems of difficult and costly transportation of large, specialized lifting equipment.

[0100] See Figure 10 When transported by land, the hoisting device only needs to be disassembled into main modules such as main beam 10 and secondary beam 20, and can be transported using ordinary flatbed trucks. There is no risk of exceeding the length or width limits, which greatly simplifies the transportation arrangement and reduces the reliance on special vehicles and related costs.

[0101] See Figure 11 During sea transport, all modules of the lifting equipment can be completely disassembled and placed in a standard 40GP container (80) as shown in the diagram. Container 80 contains a parts compartment (not labeled in the diagram) for storing ring slings, flat slings, shackles, and fasteners.

[0102] Therefore, the lifting device possesses strong backward compatibility, meeting the lifting needs of various mainstream blade weight classes (such as 50t, 45t, 40t, etc.) in the market, thus improving equipment utilization. By replacing the main beam 10 and auxiliary beam 20 with different specifications, it can flexibly adapt to blades of different lengths, achieving multi-purpose use and avoiding the huge investment of repeatedly purchasing dedicated lifting devices for different blade models. Core functional components (such as hoists and clamping components 40) can be replaced as needed, and different drive forms such as manual, electric, and hydraulic can be flexibly selected to adapt to different working conditions, cost budgets, and maintenance conditions.

[0103] The pressure regulation system can automatically adjust the clamping force based on real-time wind speed changes through a closed-loop coordination of sensors, controllers, and actuators. This intelligent control method effectively avoids two extreme risks: preventing blade slippage or detachment due to insufficient pressure, and preventing structural damage to the blade body due to excessive pressure, thus greatly improving the safety, stability, and automation level of hoisting operations.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hoisting device for installing wind turbine blades, characterized in that, include: At least two main beams, with any two adjacent main beams being detachably connected; A secondary beam is located at both ends of at least two of the main beams and is detachably connected to the main beams at the ends. The secondary beam has multiple lifting points arranged in an array along its own length direction. Lifting components, including: A mounting base, detachably mounted on one of the lifting points; The lifting assembly is detachably connected to the mounting base; The hoisting assembly is detachably connected to the lifting assembly.

2. The hoisting device for wind turbine blade installation according to claim 1, characterized in that, Each of the main beams has a connecting flange at at least one end, and two adjacent connecting flanges are connected by a first fastener.

3. The hoisting device for wind turbine blade installation according to claim 2, characterized in that, Multiple mounting lugs are provided on the main beam located at the end. Each pair of mounting lugs is spaced apart and opposite to each other along the height direction of the main beam, forming an installation space between each pair of mounting lugs. The sub-beam is embedded in the mounting space and connected to the mounting ear plate by a second fastener.

4. The hoisting device for wind turbine blade installation according to claim 1, characterized in that, It also includes a clamping component, the clamping component comprising: The mounting base is fixedly mounted on the sub-beam; The mounting beam is rotatably connected to the mounting base; A driving component, one end of which is rotatably connected to the sub-beam and the other end of which is rotatably connected to the mounting beam, is adapted to extend and retract along its own length direction to drive the mounting beam to rotate relative to the mounting base; The pressure plate assembly is detachably connected to the mounting beam and is adapted to cooperate with the lifting assembly to clamp the component to be lifted.

5. The hoisting device for wind turbine blade installation according to claim 4, characterized in that, The pressure plate assembly includes: The pressure plate base is detachably connected to the mounting beam; A support base is detachably connected to the pressure plate base and is rotatable relative to the pressure plate base; At least one pressure plate body is fixedly mounted on the support base, and at least one of the pressure plate bodies is adapted to cooperate with the hoisting assembly to press the object to be hoisted; A pressure sensor is located at the rotation center of the support base and the pressure plate base, and is used to detect the pressure value applied to the part to be lifted; A pressure regulation system, connected to the control valve of the pressure sensor and the drive unit, is used to adaptively adjust the pressure of the drive unit according to the pressure value detected by the pressure sensor.

6. The hoisting device for wind turbine blade installation according to any one of claims 1 to 5, characterized in that, It also includes main beam legs, which are detachably connected to each of the main beams; And / or, it also includes sub-beam legs, which are spaced apart on the sub-beam and detachably connected to the sub-beam.

7. The hoisting device for wind turbine blade installation according to claim 6, characterized in that, The main beam is provided with a mounting base, and the main beam legs are rotatably connected to the mounting base via pins, so that the main beam legs can rotate relative to the main beam to switch between a folded state and an unfolded state.

8. The hoisting device for wind turbine blade installation according to any one of claims 1 to 5, characterized in that, The lifting assembly includes a hoist, the top of which is detachably connected to the fixed base via a third fastener, and the bottom of which is detachably connected to the lifting assembly via a fourth fastener.

9. The hoisting device for wind turbine blade installation according to claim 8, characterized in that, The hoisting assembly includes: The lifting arm is detachably connected to the bottom of the hoist via a fourth fastener; The first unhooking component is connected to the lifting arm; The second unhooking component is connected to the lifting arm and is disposed opposite to the first unhooking component at a distance, and the second unhooking component and the first unhooking component restrict the suspension space; A driving member is disposed inside the first unhooking member, adapted to extend out of the first unhooking member, and pass through the suspension space to extend into the second unhooking member; The first sling has one end located in the suspension space and suspended from the drive member.

10. The hoisting device for wind turbine blade installation according to any one of claims 1 to 5, characterized in that, It also includes a second sling, which is detachably connected to the main beam and adapted to connect lifting equipment.

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