Fixed-length forcible entry traction feeding device for 2.5 MW retired wind power blade

Abstract

The invention relates to the field of wind power blade traction, in particular to a fixed-length forcible entry traction feeding device for 2.5 MW retired wind power blades. Comprising a traction unit, a stabilizing unit and a sleigh car, the traction unit comprises a base, a power part and an inhaul cable, the power part is connected with the base, the two ends of the inhaul cable are connected with the power part and the sleigh car respectively, the stabilizing unit comprises a fixing rod, one end of the fixing rod is connected with the base, and the other end of the fixing rod extends into a mountain. According to the fixed-length forcible entry traction feeding device for the 2.5 MW retired wind power blade, the traction effect can be improved, and rollover of the wind power blade can be prevented.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade traction, specifically to a fixed-length dismantling and traction feeding device for a 2.5MW decommissioned wind turbine blade. Background Technology

[0002] Wind turbine blades, as the core component of wind turbine generators, are mainly made of glass fiber reinforced epoxy resin (GFRP) or carbon fiber composite materials. They possess characteristics such as lightweight, high strength, and corrosion resistance. Currently, wind turbine blades need to be retired earlier due to reaching their 20-25 year service life or the need to replace them with blades of higher power. Due to their material composition, wind turbine blades also have the problem of being difficult to degrade naturally after retirement. With the first batch of commercial wind turbine generators entering their retirement period, the global annual amount of retired blades has reached tens of thousands of tons. Wind turbine blades are large in size; for example, a single blade of a 2.5MW wind turbine can exceed 60 meters in length and weigh several tons. They are massive and structurally complex (including internal web reinforcement structures). Since wind turbine generators are usually installed far from cities and transportation is inconvenient, due to the high transportation costs, retired wind turbine blades can only be disassembled into smaller parts and then transported to places where they can be further processed to reduce transportation costs. Traditional cutting methods using saw blades, wire saws, etc., are inefficient due to the high strength of wind turbine blades. Furthermore, the resulting fiberglass fragments cause serious pollution to the surrounding environment and irritate and damage the respiratory tract, skin, eyes, and lungs of workers around the demolition equipment, posing a significant threat to their health.

[0003] Current wind turbine blade traction and transportation devices, such as the special transport vehicle for large wind turbine blades disclosed in patent number CN115324837B, are equipped with a gooseneck seat. The top surface of the gooseneck seat has a through-hole, and a mounting seat is installed inside the through-hole. The top surface of the mounting seat is equipped with the gooseneck hydraulic cylinder body, and multiple guide columns are fixedly connected to the top surface of the mounting seat. The vehicle is equipped with a connecting beam assembly, a rear welding assembly, and a four-axis module body. The vehicle body is composed of the gooseneck seat, the connecting beam assembly, and the four-axis module body. The connecting beam assembly composed of multiple connecting beams makes the vehicle itself long enough to fully support the wind turbine blade.

[0004] However, when used as a traction device for disassembling wind turbine blades at their installation location, the installation location of wind turbine blades is usually in mountainous areas with many uneven and sloping areas. When using the aforementioned special transport vehicle to traction the wind turbine blades, the blades are prone to tipping over, which hinders the traction of the wind turbine blades. Summary of the Invention

[0005] The present invention aims to provide a fixed-length dismantling and traction feeding device for 2.5MW decommissioned wind turbine blades to improve the traction effect and prevent the wind turbine blades from tipping over.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a 2.5MW decommissioned wind turbine blade fixed-length dismantling traction and feeding device, comprising a traction unit, a stabilizing unit and a sled, the traction unit comprising a base, a power component and a cable, the power component being connected to the base, the two ends of the cable being connected to the power component and the sled respectively, and the bottom of the sled being provided with a sliding surface.

[0007] The beneficial effects of this plan are: In this design, the traction unit works in conjunction with a sled. The sled supports the wind turbine blades, and the traction unit pulls the sled to move the blades, thus feeding material during the blade dismantling process. Compared to ordinary transport vehicles, the sled has a sliding surface on its bottom, with a larger contact area with the ground. This prevents the sled from sinking into depressions in the mountainside while bearing the enormous weight of the wind turbine blades, allowing for continuous material feeding.

[0008] Secondly, the sled and the sliding surface are wider, so even when traversing uneven or sloping ground, the sled in this design is less likely to tip over, making feeding safer. Furthermore, a guide unit is provided between the sled and the base. The guide unit includes a guide seat and a cable guide assembly. The cable guide assembly is located on the guide seat and includes a first limiting roller, which forms a first gap for the cable to pass through.

[0009] The beneficial effects of this solution are as follows: after the cable passes through the first gap, the first limiting roller can limit the cable, thereby preventing the cable from slipping laterally. After the cable is limited, the sliding carriage that slides under the action of the cable and drives the wind turbine blade will also not slip laterally, so that the wind turbine blade can achieve directional traction during the cutting process, accurately control the blade to move along the predetermined straight trajectory, effectively suppress its lateral deviation during the conveying process, and ensure the stability of the blade's attitude angle.

[0010] Furthermore, the cable guide assembly also includes a second limiting roller, which forms a second gap for the cable to pass through, and the projection of the second limiting roller in the lateral direction forms a closed annular gap with the first limiting roller.

[0011] The beneficial effects of this solution are: the second limiting roller limits the cable from another direction, that is, the first and second limiting rollers can limit the cable in the circumferential direction, so that the cable will not deviate in the lateral and vertical directions, and the limiting effect is better.

[0012] Furthermore, multiple cable guide assemblies are provided, and there is a height difference between the relative cable guide assemblies. The cables pass through the first gap and the second gap of all cable guide assemblies in sequence and are distributed in an S-shape.

[0013] The beneficial effect of this solution is that multiple cable guide components can improve the limiting effect on the cable.

[0014] Furthermore, the guiding unit also includes a blade guiding assembly, which has a V-shaped or U-shaped guide groove.

[0015] The beneficial effects of this solution are as follows: When the wind turbine blade is being pulled, the main body of the wind turbine blade is placed in the guide groove on the guide unit. The guide groove guides the wind turbine blade, so that during the gradual feeding process, the wind turbine blade will only slide along the length direction and will not shift laterally. This maintains stable feeding when the wind turbine blade is disassembled on site, improves the efficiency and accuracy of cutting and disassembly, reduces the size fluctuation of the fragments obtained from cutting and disassembly, and is more conducive to subsequent recycling.

[0016] Furthermore, multiple blade guide assemblies are provided and are distributed sequentially along the length of the cable.

[0017] The beneficial effects of this solution are as follows: the multiple blade guide components in this solution are distributed sequentially along the length of the wind turbine blade, which can limit the movement of different parts of the wind turbine blade, thereby better limiting the movement of the wind turbine blade.

[0018] Furthermore, the blade guide assembly includes a first roller and a second roller arranged opposite to each other. The first roller and the second roller are rotatably coupled with the base, and the first roller and the second roller are arranged such that one end of the first roller is lower than the other end of the second roller. The guide groove is composed of the first roller and the second roller of the same blade guide assembly.

[0019] The beneficial effects of this solution are as follows: the first and second rollers can rotate, and when feeding the wind turbine blades, the wind turbine blades move relative to the first and second rollers. At this time, the rotation of the first and second rollers can reduce the friction between them and the wind turbine blades, thereby avoiding rapid wear of the first and second rollers or damage to the surface of the wind turbine blades, so that the first and second rollers maintain a longer service life and improve the recycling effect of the wind turbine blades.

[0020] Furthermore, the fixing rod is set vertically and extends into the mountain below the base; the base is provided with a stabilizing unit, which includes a fixing rod and a lateral limiting plate. One end of the fixing rod is connected to the base, and the other end extends into the mountain. The lateral limiting plate is located on the side of the base and is fixed to the base and extends into the mountain on the side of the base.

[0021] The beneficial effects of this solution are as follows: The fixing rod in this solution can be fixed to the mountainside. Since the fixing rod is fixed to the base, it can connect the base to the mountainside. Therefore, when traction is applied to the wind turbine blades, the base will not move, and the power components installed on the base will not shift, thereby improving the traction effect. Because wind turbine blades are usually installed at high locations such as mountaintops, where the ground has large areas of hard rock, the fixing rod in this solution extends into the mountainside to better fix the base, thus improving the fixation effect on the power components.

[0022] Secondly, the lateral limiting component in this solution is located on the side of the base, connecting the base to the surrounding mountains, further fixing the base and improving the traction effect; at the same time, it can also prevent the base from tipping over. The size and weight of wind turbine blades are relatively large, and the tipping of the base also poses a risk of causing the wind turbine blades to tip over. Therefore, this solution prevents the base from tipping over, which can avoid the wind turbine blades tipping over and injuring surrounding equipment and personnel, and improve the safety of recovery.

[0023] Furthermore, the power component includes a motor, which is electrically connected to a controller. The controller includes a calculation module and outputs the number of rotations n of the motor according to the following formula: n ; Where L1 is the distance the wind turbine blade moves after one cut, and L is the length of the cable moved by the power component when the motor rotates one revolution.

[0024] The beneficial effects of this solution are as follows: the controller in this solution can control the motor to rotate a preset number of revolutions to ensure that the wind turbine blades are moved a preset distance, thereby achieving fixed-length cutting of the wind turbine blades.

[0025] Furthermore, a position detector is provided between the guiding unit and the traction unit, and the position detector is electrically connected to a controller, which is electrically connected to the power component.

[0026] The beneficial effects of this solution are as follows: The position detector in this solution is opposite to the wind turbine blade and is used to detect whether the cutting part of the wind turbine blade has moved to the preset position. When the wind turbine blade moves to the preset position, the position detector sends an electrical signal to the controller, and the controller sends a signal to the power component to stop the power component from working, so as to realize the fixed length feeding of the wind turbine blade, ensure that the length of the fragments after each cutting is uniform, and facilitate the recycling of the wind turbine blade. Attached Figure Description

[0027] Figure 1 This is a perspective view of the traction unit in Embodiment 1 of the present invention; Figure 2 This is a perspective view of the guide unit in Embodiment 1 of the present invention; Figure 3 This is a perspective view of the sled in Embodiment 1 of the present invention; Figure 4 for Figure 2 Right view of the cable guide assembly; Figure 5 for Figure 2 3D view of the guide unit for the middle blade; Figure 6 for Figure 5 The right view; Figure 7 This is a schematic diagram of the installation of the position detector in Embodiment 23 of the present invention. Detailed Implementation

[0028] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: base 1, bottom limiting plate 11, vertical plate 12, horizontal plate 13, fixing rod 14, winch 2, guide seat 3, support frame 31, upright frame 32, blade guide assembly 4, first roller 41, second roller 42, cable guide assembly 5, first shaft 51, second shaft 52, sled 6, hanging ring 61, sliding plate 62, and grating 7.

[0029] Example 1 Example 1 is basically as follows Figure 1 , Figure 2 , Figure 3 As shown, a 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device includes a traction unit, a guide unit, and a sled 6 arranged sequentially from left to right. The traction unit includes a base 1, a power component, and a cable. The base 1 is placed on the ground and has a stabilizing unit. The stabilizing unit includes two fixed rods 14, multiple lateral limiting plates, and two bottom limiting plates 11. The two fixed rods 14 have a T-shaped cross-section along the vertical direction, and the lower end of the fixed rods 14 is pointed. The rods 14 penetrate the base 1 vertically and insert into the mountain below to initially fix the base 1. The two bottom limiting plates 11 are vertically arranged and welded to the front and rear ends of the base 1, respectively. The bottom limiting plates 11 extend into the mountain below the base 1.

[0030] Each of the multiple lateral limiting plates includes a vertical plate 12 and a horizontal plate 13. Both the vertical plate 12 and the horizontal plate 13 are welded and fixed to the base 1. The vertical plate 12 is vertically positioned and extends into the mountainside on the side of the base 1, while the horizontal plate 13 extends downwards into the mountainside below the base 1. Specifically, in this embodiment, the installation of the bottom limiting plate 11, vertical plate 12, and horizontal plate 13 can be achieved by first creating grooves in the mountainside through cutting or drilling, and then placing the bottom limiting plate 11, vertical plate 12, and horizontal plate 13 into the corresponding grooves, using the rocks of the mountainside to fix the base 1. In actual implementation, the vertical plate 12 can also penetrate the nearest bottom limiting plate 11, thereby increasing the connection strength between the stabilizing units and enhancing the stabilizing effect on the base 1.

[0031] Both the power unit and the cables are provided in pairs. Specifically, in this embodiment, the power unit is an existing winch 2, with two winches 2 respectively located at the front and rear ends of the base 1. Both cables are existing steel wire ropes, with the left end of the cables connected to the drum of the winch 2. The bottom of the sled 6 is a sliding plate 62, with the left end of the sliding plate 62 curving upwards to form an arc. In this design, the bottom of the sled forms a sliding surface to increase the contact area with the ground. The left side wall of the sled 6 has two integrally formed hanging rings 61, and the right ends of the two cables are respectively fitted onto the two hanging rings 61. Specifically, the installation method of the cables is the same as that of the prior art, and will not be described again in this embodiment.

[0032] The guiding unit includes a guide seat 3, multiple cable guide assemblies 5, and four blade guide assemblies 4. The guide seat 3 is also placed on the ground, and a fixing rod 14 is provided on the guide seat 3 and fixed to the mountain through the fixing rod 14. Four cable guide assemblies 5 are provided on the guide seat 3 relative to each cable. Taking the front cable as an example, two cable guide assemblies 5 are located at the left end of the guide seat 3, and two cable guide assemblies 5 are located at the right end of the guide seat 3. Among the two cable guide assemblies 5 located at the left or right end, one guide assembly is higher than the other. Figure 5 and Figure 6 All cable guide components 5 include a first limiting roller and a second limiting roller. A frame 32 is bolted to the guide seat 3. The first limiting roller and the second limiting roller are both mounted on the frame 32. The first limiting roller includes two opposing first rotating shafts. The two first rotating shafts are arranged laterally and mounted on the frame 32 through bearings. A first gap extending laterally is formed between the two first rotating shafts. The second limiting roller includes two opposing second rotating shafts. The two second rotating shafts are arranged vertically and connected to the frame 32 through bearings. A second gap extending vertically is formed between the two second rotating shafts. The projection of the two second rotating shafts laterally and the two first rotating shafts form a U-shaped annular gap. After the cable passes through the first gap and the second gap in sequence, it is limited by the first rotating shaft and the second rotating shaft and will not deviate laterally or vertically. The front cable passes through the first and second gaps on the two cable guide components 5 in sequence, and the rear cable passes through the first and second gaps on the two rear cable guide components 5 in sequence, so that the two cables and the cable guide components 5 are distributed in an S-shape, which has a better limiting effect on the cables.

[0033] Four blade guide assemblies 4 are distributed from left to right. Referring to Figures 4 and 5, each blade guide assembly 4 includes a first roller 41 and a second roller 42 arranged opposite each other. A support frame 31 is bolted to the guide seat 3. The first roller 41 and the second roller 42 are connected to the support frame 31 through bearings. The ends of the first roller 41 and the second roller 42 that are closer to each other are lower than the ends that are farther apart, so that the first roller 41 and the second roller 42 are inclined. The first roller 41 and the second roller 42 of the same blade guide assembly 4 form a V-shaped guide groove. Specifically, the included angle of the guide groove formed by the first roller 41 and the second roller 42 is determined according to the included angle between the adjacent sidewalls of the wind turbine blade, so that the wind turbine blade is placed in the guide groove, and the first roller 41 and the second roller 42 are fitted with the adjacent sidewalls of the wind turbine blade, so as to better support and guide the wind turbine blade.

[0034] The specific implementation process is as follows: Initially, the cable is in an extended state, and the sled 6 is far from the guide seat 3. When the wind turbine blade needs to be tractioned, the wind turbine blade is hoisted onto the guide seat 3 and the sliding trolley using existing hoisting equipment such as cranes. The root part of the wind turbine blade is placed on the sliding trolley, and the main body of the wind turbine blade is located on the guide seat 3 and positioned between the first roller 41 and the second roller 42. The first roller 41 and the second roller 42 support and guide the wind turbine blade.

[0035] When cutting and disassembling wind turbine blades, the cutting or disassembly equipment is placed above the guide seat 3 or the traction unit, or between the guide seat 3 and the base 1. During traction feeding, the winch 2 operates to wind up the cable, causing the sled 6 to move towards the side closer to the base 1. In this case, the wind turbine blades can be moved synchronously by setting clamps on the sled 6 or using other fixing equipment to fix the wind turbine blades to the sled 6. This distribution of the traction unit, guide unit, and sled 6 in this application makes the traction feeding device of this solution shorter and occupies less space, making it more suitable for use in locations with limited space, such as mountaintops.

[0036] Example 2 Based on Example 1, this example includes a controller, which is electrically connected to the winch motor. The controller in this example is a PLC controller with a calculation module. In actual implementation, the controller outputs the number of motor rotations n according to the following formula: n The value of L is determined by the formula L The calculation can then be performed, where r is the rotation radius of the power component, i is the reduction ratio of the winch reducer, and π is pi. This enables the rapid and efficient fixed-length traction and conveying of wind turbine blades, as well as fixed-length cutting.

[0037] Example 3 Based on Example 2, such as Figure 7 As shown, this embodiment differs from Embodiment 2 in that a position detector is provided between the base 1 and the guide seat 3 in this embodiment. The position detector in this embodiment includes two gratings 7, which are arranged opposite each other and respectively opposite the front and rear ends of the guide seat 3, allowing the wind turbine blade to move between the two gratings 7 when pulled to the left. The controller in this scheme is electrically connected to the position detector and the two winches 2. In this embodiment, the gratings 7 are opposite to the cutting device that cuts the wind turbine blade. When the left end of the wind turbine blade is pulled to a position opposite to the cutting device, the left end of the wind turbine blade moves between the two gratings 7. The gratings 7 send a signal to the controller, and after receiving the signal, the controller sends a signal to the two winches 2, causing the two winches 2 to stop working, and the wind turbine blade no longer moves to the left, thus achieving fixed-length traction of the wind turbine blade. When cutting is completed and the cut wind turbine blade is transferred out of the cutting station, the gratings 7 send a signal to the controller again, and the controller controls the winches 2 to resume working, realizing continuous and automatic feeding of the wind turbine blade. In summary, the controller in this embodiment controls the number of rotations of the motor in the winch 2 in a different way than in embodiment 2, but it can still achieve fixed-length conveying of wind turbine blades.

[0038] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A fixed-length dismantling and traction feeding device for 2.5MW decommissioned wind turbine blades, characterized in that: It includes a traction unit, a stabilizing unit, and a sled. The traction unit includes a base, a power component, and a cable. The power component is connected to the base, and the two ends of the cable are connected to the power component and the sled, respectively. The bottom of the sled is provided with a sliding surface.

2. The 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to claim 1, characterized in that: A guide unit is provided between the sled and the base. The guide unit includes a guide seat and a cable guide assembly. The cable guide assembly is located on the guide seat and includes a first limiting roller. The first limiting roller forms a first gap for the cable to pass through.

3. A 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to claim 2, characterized in that: The cable guide assembly also includes a second limiting roller, which forms a second gap for the cable to pass through, and the projection of the second limiting roller in the lateral direction forms a closed annular gap with the first limiting roller.

4. A 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to any one of claims 2 and 3, characterized in that: There are multiple cable guide assemblies, and there is a height difference between the relative cable guide assemblies. The cables pass through the first gap and the second gap of all the cable guide assemblies in sequence and are distributed in an S-shape.

5. A 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to claim 2, characterized in that: The guiding unit also includes a blade guiding assembly, which has a V-shaped or U-shaped guide groove.

6. A 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to claim 5, characterized in that: Multiple blade guide assemblies are provided and are distributed sequentially along the length of the cable.

7. A 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to any one of claims 5 and 6, characterized in that: The blade guide assembly includes a first roller and a second roller arranged opposite to each other. The first roller and the second roller are rotatably coupled with the base, and the first roller and the second roller are arranged such that one end of the first roller is lower than the other end of the second roller. The guide groove is composed of the first roller and the second roller of the same blade guide assembly.

8. A 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to claim 1, characterized in that: The fixing rod is set vertically and extends into the mountain below the base; the base is provided with a stabilizing unit, which includes a fixing rod and a lateral limiting plate. One end of the fixing rod is connected to the base, and the other end extends into the mountain. The lateral limiting plate is located on the side of the base and is fixed to the base and extends into the mountain on the side of the base.

9. A 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to claim 2, characterized in that: The power component includes a motor, which is electrically connected to a controller. The controller includes a calculation module and outputs the number of motor rotations, n, according to the following formula: n ; Where L1 is the distance the wind turbine blade moves after one cut, and L is the length of the cable moved by the power component when the motor rotates one revolution.

10. A 2.5MW decommissioned wind turbine blade fixed-length dismantling and traction feeding device according to claim 2, characterized in that: A position detector is provided between the guiding unit and the traction unit. The position detector is electrically connected to a controller, and the controller is electrically connected to the power component.

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