Offshore wind turbine cabin lifting appliance
By designing a lifting device for offshore wind turbine nacelles, using a tracked chassis and a buffer mechanism, and directly connecting it to the hook and rope, the problems of high lifting height requirements and safety hazards in existing technologies have been solved, achieving a safe and stable lifting effect.
Patent Information
- Application Number
- CN202520222766.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing methods for hoisting wind turbine nacelles require large cranes, pose safety hazards due to wind and waves at sea, and have high hoisting height requirements.
Design a lifting device for offshore wind turbine nacelles, which adopts a tracked chassis and a slider structure, combined with a buffer mechanism, and is directly connected to the hook and rope, eliminating the need for slings. The slider is driven to move closer or further away by a threaded rotating rod to achieve wrapping and fixation, and the buffer mechanism reduces the impact force.
This reduces the lifting height requirements for cranes, improves the safety and stability of wind turbine nacelle hoisting, reduces equipment requirements, and enhances the convenience and adaptability of the hoisting process.
Smart Images
Figure CN223659639U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lifting appliance, in particular to a lifting appliance for offshore wind turbine nacelle. BACKGROUND
[0002] Wind power generation is the fastest growing green energy technology in the world. While the construction of land-based wind farms is developing rapidly, people have noticed some limitations of land-based wind energy utilization, such as large land occupation and noise pollution. Due to the abundant wind energy resources in the sea and the feasibility of today's technology, the sea will become a rapidly developing wind power market.
[0003] The existing wind turbine nacelle lifting generally adopts four groups of lifting belts + lifting appliances + lifting belts + lifting ropes with hooks of cranes for lifting. Although the lifting belts have a certain elasticity and can buffer, in the case of a great increase in the distance from the crane hook head to the nacelle, the lifting height of the crane needs to be increased to complete the installation of the nacelle. This not only requires larger crane equipment, but also causes certain safety hazards due to sea waves. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide a lifting appliance for offshore wind turbine nacelle, which can save lifting belts, directly connect with the crane with lifting ropes with hooks, reduce the lifting height of the crane, and reduce the requirement for the lifting height of the crane.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme:
[0006] A lifting appliance for offshore wind turbine nacelle, comprising a fixed plate, a track chassis is installed in the middle of the fixed plate, and the track chassis supports and transports the wind turbine nacelle; sliding blocks are arranged on both sides of the track chassis, and the sliding blocks are in sliding cooperation with the sliding grooves on the fixed plate and are driven to relatively approach or move away through threaded rotating rods; a moving block is installed on the upper end of each sliding block, and a wind turbine groove and a track groove are arranged at the opposite end of the two moving blocks; when the two moving blocks are closed, the wind turbine groove and the track groove cover the wind turbine nacelle and the track chassis.
[0007] The threaded rotating rod is rotatably installed in the sliding groove, and the threads of the left and right two sections of the threaded rotating rod are opposite in rotation direction and are in threaded connection with the threaded holes of the two sliding blocks.
[0008] Half-cut bolts are fixed on the front and rear end faces of the two moving blocks close to the closed position, and the half-cut bolts of the two moving blocks form threaded rods with complete threads after the two moving blocks are closed, and the threaded rods at the front and rear are in threaded connection with the nuts.
[0009] The top surfaces of the two moving blocks are fixedly connected with lifting blocks.
[0010] The lower part of the fixed plate is provided with a buffer mechanism, which comprises a bottom plate connected with the fixed plate through a plurality of springs; the periphery of the bottom plate is fixed with a limiting rod in sliding fit with a limiting sliding block and limited by an anti-dropping plate.
[0011] One side of the bottom plate is fixedly connected with a sliding-in device, which comprises a triangular plate fixedly connected to the side of the bottom plate, the top surface of the triangular plate being a slope surface, and an auxiliary roller rotatably connected to the slope surface.
[0012] The left and right ends of the triangular plate are fixedly connected with side plates, the side surfaces of the side plates are fixedly connected with mounting blocks, and the mounting blocks are rotatably connected with protection wheels.
[0013] The offshore wind turbine nacelle lifting appliance has the following technical effects:
[0014] 1) The nacelle is slid into the inside of the wrapping device through the conveying track, and is stopped from sliding by the limiting block when sliding to the bottom end, so that the nacelle is more easily slid into the inside of the clamping mechanism; the moving block is relatively close or far away by rotating the threaded rotating rod, so as to achieve the effect of closing or opening the wrapping device; when the wrapping device is in the closed state, the nut is screwed on the outer surface of the half-cut bolt to fix the wrapping device, so that the nacelle is kept stable during hoisting
[0015] 2) The buffer mechanism is adopted, so that when the whole device needs to be placed on the ground, the spring can buffer the impact force of contacting the ground, so as to prevent the nacelle from being subjected to strong impact force; after the device falls to the ground, the fixed plate is appropriately lowered under the action of gravity, the nacelle is conveniently pushed out of the triangular plate through the sliding-in device on one side, the auxiliary roller and the protection wheel help the nacelle to move more quickly and conveniently, and the convenience of the device for the nacelle is improved.
[0016] 3) Compared with the hoisting mode mentioned in the background art part, the device can dispense with the connection between the lifting belt and the nacelle, the nacelle is wrapped by the clamping device, the lifting rope of the crane is directly connected with the clamping device, and the distance of the lifting belt is dispensed with; that is, the crane with the lifting appliance and the lifting rope with the lifting hook is used for hoisting according to the present application, compared with the crane with the lifting belt, the lifting appliance, the lifting belt and the lifting rope with the lifting hook for hoisting, when the hook of the crane reaches the same height, the height of the nacelle reached by the present application is higher than that of the nacelle in the traditional mode. Therefore, when the nacelle is installed, the crane hoisting height can be reduced by using the lifting appliance of the present application, so that the requirement for the equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0017] The present application will be further described in conjunction with the drawings and embodiments:
[0018] Figure 1 It is the installation schematic view (when hoisting state) of the utility model.
[0019] Figure 2 It is the structure schematic view of the clamping mechanism in the utility model.
[0020] Figure 3 It is the structure schematic view of the wrapping device of the utility model.
[0021] Figure 4 It is the structure schematic view of the buffer mechanism of the utility model.
[0022] Figure 5 It is the structure schematic view of the sliding device of the utility model.
[0023] In the drawing: buffer mechanism 1, bottom plate 11, limiting rod 12, spring 13, anti-drop plate 14, sliding device 15, triangular plate 151, auxiliary roller 152, side plate 153, mounting block 154, protection wheel 155, clamping mechanism 2, fixed plate 21, limiting sliding block 22, sliding groove 23, track chassis 24, conveying track 25, threaded rotating rod 26, wrapping device 27, sliding block 271, moving block 272, track groove 273, fan groove 274, limiting block 275, lifting block 276, threaded hole 277, half-cut bolt 278, fan nacelle 3. DETAILED DESCRIPTION
[0024] As shown in Figure 1 The utility model provides a kind of offshore wind turbine nacelle lifting appliance, including clamping mechanism 2, clamping mechanism 2 supports, clamps and hoists wind turbine nacelle 3, the bottom surface of clamping mechanism 2 is provided with buffer mechanism 1, and buffer mechanism 1 provides certain buffer after wind turbine nacelle 3 falls.
[0025] As shown in Figure 2 Clamping mechanism 2 includes fixed plate 21, and track chassis 24 is installed in the middle of fixed plate 21, when wind turbine nacelle 3 is sent into lifting appliance, track chassis 24 slowly conveys wind turbine nacelle 3, guarantees that wind turbine nacelle 3 is stably entered.In the top surface of fixed plate 21 one end inside is provided with sliding groove 23, and threaded rotating rod 26 is rotatably connected in sliding groove 23, and threaded rotating rod 26 drives wrapping device 27 to open or cover and clamp wind turbine nacelle 3.
[0026] Wrapping device 27 includes sliding block 271, and sliding block 271 is two groups (left sliding block and right sliding block), and the threaded hole 277 of two sliding blocks 271 is opened and the threaded hole 277 of two sliding blocks 271 is opposite in rotation direction.Two segments of threaded rotating rod 26 are opposite in rotation direction and are screw-connected with the threaded hole 277 of two sliding blocks 271 correspondingly.Such when rotating threaded rotating rod 26, two sliding blocks 271 are relatively close or far away.
[0027] The top surface of the two sliders 271 is fixedly connected with a moving block 272, and the moving block 272 is provided with a fan groove 274 and a track groove 273. After the two moving blocks 272 are closed, the inner wall of the fan groove 274 is attached to the fan cabin 3, so as to realize clamping and wrapping of the fan cabin 3, and the track groove 273 reserves space for the track chassis 24, so as to ensure that the track chassis 24 does not interfere with the inner cavity of the moving block 272 after the two moving blocks 272 are closed.
[0028] Preferably, the moving block 272 on one side is provided with a limiting block 275, and the moving block 272 on the other side is provided with a limiting groove. When the two moving blocks 272 are closed, the limiting block 275 is inserted into the limiting groove. When the two moving blocks 272 are in an open state, after the fan cabin 3 slides into the inside of the wrapping device 27 through the conveying track 25, the sliding is stopped by the limiting block 275 when sliding to the last end.
[0029] Preferably, a semicircular cylindrical half-cut bolt 278 is fixed at the closing surface of each of the two moving blocks 272, so as to form a complete screw rod with complete threads after the two moving blocks 272 are closed. In this way, a nut can be conveniently screwed.
[0030] The front and rear surfaces of the two moving blocks 272 are provided with half-cut bolts 278, so as to realize locking of the front and rear surfaces.
[0031] Preferably, the top surface of each of the two moving blocks 272 is fixedly connected with a lifting block 276. The lifting block 276 is provided with a lifting hole, so as to facilitate direct lifting.
[0032] After the fan cabin 3 reaches the conveying track 25, the two moving blocks 272 are moved close to each other by rotating the threaded rotating rod 26, so as to realize closing of the wrapping device 27. The two moving blocks 272 wrap the fan cabin 3. When the wrapping device 27 is in a closed state, a nut can be screwed into the outer surface of the half-cut bolt 278, so as to fix the wrapping device 27.
[0033] As shown in Figure 1 , Figure 4 , the buffer mechanism 1 comprises a bottom plate 11, and the top surface of the bottom plate 11 is fixedly connected with a limiting rod 12. The limiting slide block 22 freely passes through the limiting rod 12 and is limited by a anti-dropping plate 14 fixed at the top end of the limiting rod 12. By sliding the limiting rod 12 in the inside of the limiting slide block 22, the anti-dropping plate 14 prevents the limiting rod 12 from slipping off. When it is needed to place the entire device on the ground, the spring 13 buffers the impact force of contacting the ground, so as to prevent the fan cabin 3 from being subjected to a strong impact force.
[0034] In addition, the bottom plate 11 is fixedly connected with a sliding device 15 on one side, the sliding device 15 comprises a triangular plate 151, the triangular plate 151 is fixedly connected to the side of the bottom plate 11, the top surface of the triangular plate 151 is a slope surface, the slope surface is a working surface, the working surface is provided with a mounting groove, the auxiliary roller 152 is rotatably connected in the mounting groove, the left and right ends of the triangular plate 151 are fixedly connected with side plates 153, the side surface of the side plate 153 is fixedly connected with a mounting block 154, the outer surface of the mounting block 154 is rotatably connected with a protection wheel 155.
[0035] When the device is placed on the ground, the clamping mechanism 2 is under the action of gravity, the upper end of the fixed plate 21 is flush with the highest point of the triangular plate 151. Because the front of the fan nacelle 3 is arc-shaped, and the side of the transmission track is also arc-shaped, when the transmission track is forwardly rotated, the fan nacelle 3 is manually pushed into the inside of the device. The fan nacelle 3 is pushed into the triangular plate 151, and the auxiliary roller 152 and the protection wheel 155 help the fan nacelle 3 to be more accurately moved to the top surface of the transmission track 25. In addition, when the fan nacelle 3 enters the transmission track, the spring 13 is further compressed, the upper end surface of the transmission track 25 is flush with the triangular plate 151, and in the later stage, the fan nacelle 3 can be taken out by reversely driving the track.
[0036] Working principle and process: the whole device is placed on the flat ground, under the action of gravity, the fixed plate 21 is flush with the highest point of the triangular plate 151, the fan nacelle 3 is pushed into the triangular plate 151, and the auxiliary roller 152 and the protection wheel 155 help the fan nacelle 3 to be more accurately moved to the top surface of the transmission track 25. The fan nacelle 3 is slid into the inside of the wrapping device 27 through the transmission track 25, and stops sliding when sliding to the bottom end is blocked by the limiting block 275, rotates the threaded rod 26 to make the inside of the threaded hole 277 rotate, drives the moving block 272 to move left and right, and has the effect of closing and opening the wrapping device 27. The track groove 273 can wrap the fan nacelle 3 without affecting the normal work of the transmission track 25. When the wrapping device 27 is in the closed state, the nut can be screwed on the outer surface of the half-cut bolt 278 to fix the wrapping device 27, the lifting rope is fixed in the inside of the lifting block 276, the whole device can be lifted, and when the device is put down, the spring 13 can buffer the impact force of contacting the ground, preventing the fan nacelle 3 from being subjected to strong impact force.
[0037] This utility model provides a lifting device for offshore wind turbine nacelles, employing a clamping mechanism, a fixed plate, a limiting slider, a sliding groove, a fixed rotating plate, a conveyor belt, a threaded rotating rod, a wrapping device, a slider, a moving block, a track groove, a wind turbine groove, a limiting block, a lifting block, threaded holes, and half-cut bolts. The fixed plate secures the fixed rotating plate, and the top surface of the fixed plate has sliding grooves at both ends, allowing the wrapping device to slide inside. Rotating the threaded rotating rod moves the wrapping device, enhancing its strength. The conveyor belt, movably connected to the outer surface of the fixed rotating plate, facilitates easier sliding of the wind turbine nacelle. Inside the clamping mechanism, the wind turbine nacelle can be slid into the wrapping device via the conveyor belt. When it reaches the bottom, it is stopped by the limit block. Rotating the threaded rod causes the threaded hole inside to rotate, which moves the moving block left and right, thus opening and closing the wrapping device. The track groove will wrap the wind turbine nacelle without affecting the normal operation of the conveyor belt. When the wrapping device is closed, nuts can be screwed into the outer surface of the half-cut bolts to fix the wrapping device. Half-cut bolts are provided on both the front and rear sides of the moving block, which improves the adaptability of the device.
[0038] This utility model provides a offshore wind turbine nacelle lifting device, which employs a buffer mechanism, base plate, limit rod, spring, anti-detachment plate, sliding device, triangular plate, auxiliary rollers, side plate, mounting block, and protective wheels. The limit rod slides inside the limit slider, and the anti-detachment plate prevents the limit rod from slipping off. When the entire device needs to be placed on the ground, the spring buffers the impact force upon contact with the ground, preventing the wind turbine nacelle from being subjected to strong impact. When the device is placed on the bottom surface, under the action of gravity, the fixing plate will remain flush with the highest point of the triangular plate, facilitating the pushing of the wind turbine nacelle from the triangular plate. The auxiliary rollers and protective wheels help the wind turbine nacelle move more accurately to the top surface of the conveyor belt, improving the adaptability of the device.
Claims
1. A type of offshore wind turbine nacelle lifting device, characterized in that: The system includes a fixed plate (21), a tracked chassis (24) installed in the middle of the fixed plate (21), the tracked chassis (24) supports and transports the wind turbine nacelle (3); sliders (271) are provided on both sides of the tracked chassis (24), the sliders (271) slide with the grooves (23) on the fixed plate (21) and are driven to move closer or further away by the threaded rotating rod (26); each slider (271) has a moving block (272) installed on its upper end, and each of the two moving blocks (272) has a wind turbine groove (274) and a track groove (273) at one end opposite to each other. When the two moving blocks (272) are closed, the wind turbine groove (274) and the track groove (273) cover the wind turbine nacelle (3) and the tracked chassis (24).
2. The offshore wind turbine nacelle lifting device according to claim 1, characterized in that: The threaded rotating rod (26) is rotatably installed in the slide groove (23). The threads of the left and right sections of the threaded rotating rod (26) are opposite and are threadedly connected to the threaded holes (277) of the two sliders (271).
3. The offshore wind turbine nacelle lifting device according to claim 2, characterized in that: The two moving blocks (272) are fixed with half-cut bolts (278) near the closing point on the front and rear end faces. After the two moving blocks (272) are closed, the half-cut bolts (278) of the two moving blocks (272) form a screw with a complete thread. The front and rear screws are threadedly connected to the nut.
4. The offshore wind turbine nacelle lifting device according to claim 3, characterized in that: The top surfaces of the two movable blocks (272) are fixedly connected to the lifting blocks (276).
5. The offshore wind turbine nacelle lifting device according to claim 1, characterized in that: The fixed plate (21) is provided with a buffer mechanism (1) at the bottom. The buffer mechanism (1) includes a base plate (11). The base plate (11) is connected to the fixed plate (21) by multiple sets of springs (13). Limiting rods (12) are fixed around the four edges of the base plate (11). The limiting rods (12) slide with the limiting slider (22) and are limited by the anti-detachment plate (14).
6. The offshore wind turbine nacelle lifting device according to claim 5, characterized in that: A sliding device (15) is fixedly connected to one side of the base plate (11). The sliding device (15) includes a triangular plate (151). The triangular plate (151) is fixedly connected to the side of the base plate (11). The top surface of the triangular plate (151) is a slope surface, and an auxiliary roller (152) is rotatably connected inside the slope surface.
7. The offshore wind turbine nacelle lifting device according to claim 6, characterized in that: The left and right ends of the triangular plate (151) are fixedly connected to side plates (153), and the side of the side plate (153) is fixedly connected to a mounting block (154). A protective wheel (155) is rotatably connected to the mounting block (154).