Handling device for wind turbine blades

Abstract

The utility model discloses a kind of carrying devices of fan blade, it is related to carrying device technical field, wherein, including support platform, boom assembly, elastic pressure holding component and control component, the bottom of support platform is equipped with multiple rectangularly arranged universal wheel with braking function, boom assembly includes telescopic arm, flexible hoist belt and at least two lifting components, two lifting components are arranged at telescopic arm with interval, the traction end of two lifting components is connected with the both ends of flexible hoist belt respectively, the fixed end of telescopic arm is rotatably connected with support platform, the surface of flexible hoist belt is equipped with antiskid coating and tension sensor, elastic pressure holding component includes electric push rod and pressing plate, the cylinder of electric push rod is connected with support platform, the output end of electric push rod is connected with pressing plate, and pressing plate is honeycomb silica gel pressing plate, the inside of pressing plate is provided with pressure sensor, and pressure sensor, electric push rod, lifting component and tension sensor are all connected with control component signal.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine blade handling devices, and in particular to a wind turbine blade handling device. Background Technology

[0002] With the gradual development and utilization of wind energy resources, in order to obtain more wind energy, the power of wind turbines is becoming larger and larger, and the blade length and turbine height are also increasing accordingly.

[0003] Currently, the mainstream method for handling blades is a traditional crane combined with slings. Blades are lifted and transferred by manually hooking them and adjusting the position of the slings. However, this method of handling blades makes them prone to shaking and instability during transportation.

[0004] Therefore, it is necessary to provide a new wind turbine blade handling device to solve the above-mentioned technical problems. Utility Model Content

[0005] The main purpose of this invention is to propose a wind turbine blade handling device, which aims to improve the technical problem of unstable wind turbine blade transportation in the prior art.

[0006] To achieve the above objectives, this utility model provides a wind turbine blade handling device, comprising: A support platform, the bottom of which is provided with multiple rectangular casters with braking function; A boom assembly includes a telescopic boom, a flexible lifting belt, and at least two lifting components. The two lifting components are spaced apart from the telescopic boom. Both ends of the flexible lifting belt are connected to the traction ends of the two lifting components, respectively. The fixed end of the telescopic boom is rotatably connected to the support platform. The surface of the flexible lifting belt is provided with an anti-slip coating and a tension sensor. An elastic holding assembly includes an electric push rod and a pressure plate. The cylinder of the electric push rod is connected to the support platform, and the output end of the electric push rod is connected to the pressure plate. The pressure plate is a honeycomb silicone pressure plate, and a pressure sensor is installed inside the pressure plate. The control component, including the pressure sensor, the electric push rod, the lifting component, and the tension sensor, is all connected to the control component via signal transmission.

[0007] In one embodiment, the number of boom assemblies is at least two, and the two boom assemblies are spaced apart on the support platform.

[0008] In one embodiment, the wind turbine blade transport device further includes a support assembly, the number of which is equal to the number of the casters. The support assembly is located at the bottom of the support platform and close to the casters. The output shaft of the support assembly can extend or retract vertically to adjust the height of the support platform.

[0009] In one embodiment, the support assembly includes a drive component and a support leg, the support leg being connected to the output shaft of the drive component, and the drive component being disposed at the bottom of the support platform.

[0010] In one embodiment, the support assembly further includes a displacement sensor disposed on the support leg, and the support assembly is signal-connected to the control assembly.

[0011] In one embodiment, an anti-slip pad is provided at the end of the support leg away from the drive component.

[0012] In one embodiment, the end of the telescopic arm is provided with a slide rail extending in a horizontal direction, and a plurality of connection points are slidably connected on the slide rail, and the fixed end of the lifting component is connected to the connection points.

[0013] In one embodiment, the wind turbine blade handling device further includes an alarm component, wherein conductive fibers are embedded in the anti-slip coating, the conductive fibers are electrically connected to the control component, and the alarm component is signal-connected to the control component; when the anti-slip coating wears down to a preset thickness, the control component activates the alarm component to issue an early warning.

[0014] In one embodiment, the surface of the pressure plate is provided with a plurality of evenly distributed elastic protrusions.

[0015] In one embodiment, the flexible lifting sling further includes a load-bearing fiber layer and a cut-resistant layer, wherein the cut-resistant layer, the load-bearing fiber layer, and the anti-slip coating are arranged sequentially from the inside out, and the cut-resistant layer is a polyethylene fiber woven mesh.

[0016] In the above scheme, the wind turbine blade handling device includes a support platform, a boom assembly, an elastic holding assembly, and a control assembly. The bottom of the support platform is equipped with multiple rectangular casters with braking function. The boom assembly includes a telescopic boom, a flexible lifting belt, and at least two lifting components. The two lifting components are spaced apart from the telescopic boom. The two ends of the flexible lifting belt are respectively connected to the traction ends of the two lifting components. The fixed end of the telescopic boom is rotatably connected to the support platform. The surface of the flexible lifting belt is equipped with an anti-slip coating and a tension sensor. The elastic holding assembly includes an electric push rod and a pressure plate. The cylinder of the electric push rod is connected to the support platform, and the output end of the electric push rod is connected to the pressure plate. The pressure plate is a honeycomb silicone pressure plate, and a pressure sensor is installed inside the pressure plate. The pressure sensor, electric push rod, lifting components, and tension sensor are all signal-connected to the control assembly. Specifically, the operator uses the braked casters at the bottom of the support platform to move the device to the location where the wind turbine blades are stored or awaiting transport. Upon reaching the target area, the caster brakes are engaged, securing the support platform to the ground. The telescopic boom is then rotated and extended / retracted to the preset lifting point on the blade. The traction end of the lifting component lowers, placing the flexible lifting strap over the blade's lifting point. Then, the traction end of the lifting component rises. The anti-slip coating on the flexible lifting strap increases friction with the blade surface, preventing relative slippage during lifting. A tension sensor built into the flexible lifting strap provides real-time feedback of the tension value to the control component. The control component adjusts the traction force of the lifting components on both sides to ensure uniform tension on both sides of the lifting strap, preventing tilting or structural damage to the blades due to uneven stress. Then, the control component drives... The output end of the electric push rod extends, aligning the honeycomb silicone pressure plate with the surface of the wind turbine blade. The electric push rod pushes the pressure plate against the wind turbine blade. A pressure sensor inside the pressure plate monitors the holding force in real time. The control component sets a pressure threshold based on the material of the wind turbine blade, ensuring the pressure plate is in close contact with the blade without causing overpressure. The honeycomb silicone structure can adapt to the curved contour of the blade through its own elastic deformation, improving the holding fit. Then, the universal wheel brake is released, driving the universal wheel to move and moving the wind turbine blade to the target position. During the transport process, the control component continuously receives signals from the tension and pressure sensors. If the tension is abnormal, the control component instructs the telescopic arm to fine-tune its length or the lifting component to adjust the tension to restore tension balance. If the pressure is abnormal, the control component adjusts the extension and retraction of the electric push rod to correct the holding force to a safe range. The support platform moves to the target placement position of the wind turbine blade, the universal wheel brake is locked again, and the traction end of the lifting component is driven to slowly descend, allowing the wind turbine blade to contact the placement surface. After the blade is stably placed, the output end of the electric push rod retracts, and the honeycomb silicone pressure plate detaches from the blade. Then, the flexible lifting strap is detached from the wind turbine blade and lifted, completing the unloading process. Flexible lifting slings replace rigid lifting tools, reducing rigid compression on the blade surface; anti-slip coating increases friction, preventing the blades from sliding relative to each other during lifting or movement, and reducing the risk of surface scratches.The silicone material is soft and elastic, and the honeycomb structure can adapt to the complex curved surface contour of the blade through deformation. Combined with the pressure sensor, it can accurately control the holding force and provide auxiliary fixation to prevent the wind turbine blades from shaking during transportation, thereby improving the stability of wind turbine blade transportation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of an embodiment of the wind turbine blade handling device provided by this utility model; Figure 2 for Figure 1 Enlarged view at point A; Figure 3 A schematic diagram of the structure of an embodiment of the boom assembly provided by this utility model; Figure 4 A schematic diagram of an embodiment of the flexible lifting sling provided by this utility model.

[0019] Explanation of icon numbers: 100. Wind turbine blade handling device; 1. Support platform; 2. Boom assembly; 3. Elastic holding assembly; 11. Casters; 21. Telescopic boom; 22. Flexible lifting belt; 23. Lifting component; 221. Anti-slip coating; 222. Tension sensor; 31. Electric push rod; 32. Pressure plate; 4. Support assembly; 41. Drive component; 42. Support leg; 43. Displacement sensor; 421. Anti-slip foot pad; 211. Slide rail; 211a. Connection point; 5. Alarm assembly; 321. Elastic protrusion; 223. Bearing fiber layer; 224. Cut-resistant layer; 221a. Conductive fiber.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] To achieve the above objectives, please refer to Figure 1 , Figure 3 and Figure 4This utility model proposes a wind turbine blade handling device 100, including a support platform 1, a boom assembly 2, an elastic holding assembly 3, and a control assembly. The bottom of the support platform 1 is provided with multiple rectangularly arranged casters 11 with braking function. The boom assembly 2 includes a telescopic boom 21, a flexible lifting belt 22, and at least two lifting components 23. The two lifting components 23 are spaced apart from the telescopic boom 21. The two ends of the flexible lifting belt 22 are respectively connected to the traction ends of the two lifting components 23. The fixed end of the telescopic boom 21 is rotatably connected to the support platform 1. The surface of the flexible lifting belt 22 is provided with an anti-slip coating 221 and a tension sensor 222. The elastic holding assembly 3 includes an electric push rod 31 and a pressure plate 32. The cylinder of the electric push rod 31 is connected to the support platform 1, and the output end of the electric push rod 31 is connected to the pressure plate 32. The pressure plate 32 is a honeycomb silicone pressure plate 32. A pressure sensor is provided inside the pressure plate 32. The pressure sensor, the electric push rod 31, the lifting components 23, and the tension sensor 222 are all signal connected to the control assembly. Specifically, the operator uses the braked casters 11 at the bottom of the support platform 1 to move the device to the location where the wind turbine blades are stored or awaiting transport. Upon reaching the target area, the operator locks the brake function of the casters 11, fixing the support platform 1 to the ground. The operator then drives the telescopic arm 21 to rotate and extend, adjusting it to the preset lifting point for the blade. The traction end of the lifting component 23 lowers, placing the flexible lifting strap 22 around the lifting point of the wind turbine blade. Then, the traction end of the lifting component 23 rises. The anti-slip coating 221 on the surface of the flexible lifting strap 22 increases friction with the blade surface, preventing relative slippage of the blade during lifting. The tension sensor 222 built into the flexible lifting strap 22 provides real-time feedback of the tension value to the control component. The control component adjusts the traction force of the lifting components 23 on both sides to ensure uniform tension on both sides of the lifting strap, preventing tilting or structural damage to the blade due to uneven force. Then, the control component drives... The output end of the electric push rod 31 extends, aligning the honeycomb silicone pressure plate 32 with the surface of the fan blade. The electric push rod 31 pushes the pressure plate 32 against the fan blade. The pressure sensor inside the pressure plate 32 monitors the holding force in real time. The control component sets the pressure threshold according to the material of the fan blade to ensure that the pressure plate 32 is in close contact with the blade without overpressure. The honeycomb silicone structure can adapt to the curved surface profile of the blade through its own elastic deformation, improving the holding fit. Then, the brake of the universal wheel 11 is released, and the universal wheel 11 is driven to move, moving the fan blade to the target position. During the transportation process, the control component continuously receives signals from the tension sensor 222 and the pressure sensor. If the tension is abnormal, the control component instructs the telescopic arm 21 to fine-tune its length or the lifting component 23 to adjust the tension to restore tension balance. If the pressure is abnormal, the control component adjusts the telescopic amount of the electric push rod 31 to correct the holding force to a safe range.The support platform 1 moves to the target placement position of the wind turbine blade, and the universal wheels 11 are locked and braked again. The traction end of the drive lifting component 23 slowly descends, allowing the wind turbine blade to contact the placement surface. After the blade is stably placed, the output end of the electric push rod 31 retracts, and the honeycomb silicone pressure plate 32 detaches from the blade. Subsequently, the flexible lifting strap 22 is detached from the wind turbine blade and lifted, completing the unloading. The flexible lifting strap 22 replaces the rigid lifting device, reducing rigid compression on the blade surface; the anti-slip coating 221 increases friction, preventing the blade from sliding relative to each other during lifting or movement, reducing the risk of surface scratches. The silicone material is soft and elastic, and the honeycomb structure can adapt to the complex curved contour of the blade through deformation. Combined with the pressure sensor, the holding force is precisely controlled, while providing auxiliary fixation to prevent the wind turbine blade from shaking during transportation, improving the stability of wind turbine blade transportation.

[0025] Please see Figure 1 In one embodiment, the number of boom assemblies 2 is at least two, and the two boom assemblies 2 are spaced apart on the support platform 1. Since the wind turbine blades are slender and flexible components, they are prone to bending stress due to their own weight during single-point or single-point double-lifting component 23 hoisting. At least two spaced boom assemblies 2 can form multiple independent hoisting points along the blade's length, distributing the blade weight to multiple support positions and significantly reducing local stress concentration on the blade.

[0026] Please see Figure 1 and Figure 2 In one embodiment, the wind turbine blade handling device 100 further includes support components 4. The number of support components 4 is equal to the number of casters 11. The support components 4 are located at the bottom of the support platform 1 and close to the casters 11. The output shaft of the support component 4 can extend or retract vertically to adjust the height of the support platform 1. In wind turbine blade handling scenarios, the ground is often uneven, and relying solely on the casters 11 for braking cannot eliminate platform tilt. Each support component 4 corresponds to one caster 11, and its output shaft can extend or retract independently, working with a level to achieve three-dimensional leveling of the support platform 1, ensuring the platform remains level at all times. Even on slightly sloping or gravelly surfaces, the output shaft of the support component 4 can insert into ground gaps or compact loose surfaces, providing stable support and solving the problem of the casters 11 slipping on smooth / soft surfaces. The rectangularly arranged support components 4 and casters 11 together form a multi-point support matrix. When the boom assembly 2 lifts the blade and generates lateral tension, the support components 4 can generate a counter-torque through ground friction, reducing the risk of the entire device overturning.

[0027] Please see Figure 1 and Figure 2In one embodiment, the support assembly 4 includes a drive component 41 and a support leg 42. The support leg 42 is connected to the output shaft of the drive component 41, and the drive component 41 is located at the bottom of the support platform 1. The drive component 41, such as an electric push rod 31, a hydraulic cylinder, or a servo motor with a lead screw mechanism, is directly and rigidly connected to the support leg 42, eliminating the need for a complex intermediate transmission mechanism and reducing transmission losses. When the control component commands leveling, the drive component 41 can quickly drive the support leg 42 to extend or retract, achieving real-time fine-tuning of the height of the support platform 1. The drive component 41 can integrate a position sensor to provide real-time feedback on the extension or retraction of the support leg 42, forming a closed-loop control in conjunction with the control component.

[0028] Please see Figure 2 In one embodiment, the support component 4 further includes a displacement sensor 43, which is disposed on the support leg 42. The support component 4 is signal-connected to the control component. The displacement sensor 43 is directly integrated into the support leg 42 and can monitor the extension or retraction length of the support leg 42 in real time, ensuring that the data accurately reflects the actual contact position between the support leg 42 and the ground. After receiving the data from the displacement sensors 43 of each support leg 42, the control component calculates the length difference that each support leg 42 needs to be adjusted through an algorithm, realizing three-dimensional dynamic leveling of the support platform 1. This avoids the center of gravity shift during blade hoisting due to leveling errors, reducing the risk of blade bending or surface damage. When hoisting the blade, the blade swaying will cause instantaneous load changes on the support platform 1. The displacement sensor 43 detects the slight compression of the support leg 42, and the control component coordinates with other support legs 42 to adjust their length, balancing the load distribution and avoiding local overload that could cause the support leg 42 to bend or the drive component 41 to be damaged.

[0029] Please see Figure 2 In one embodiment, an anti-slip pad 421 is provided at the end of the support leg 42 away from the drive component 41. The anti-slip pad 421 is typically made of a high-friction coefficient material, such as natural rubber, nitrile rubber, or polyurethane, and its surface can be designed with anti-slip patterns, such as diamond patterns or serrations, significantly increasing the static friction between the support leg 42 and the ground. With blades weighing tens of tons, the support leg 42 needs to withstand enormous vertical loads. The anti-slip pad 421 prevents the support leg 42 from sliding by interlocking with the material's elastic deformation and patterns.

[0030] Please see Figure 3In one embodiment, the end of the telescopic boom 21 is provided with a horizontally extending slide rail 211, on which multiple connection points 211a are slidably connected. The fixed end of the lifting component 23 is connected to the connection points 211a. Since the wind turbine blades have significant size differences, the spacing adjustment component adjusts the connection points 211a by sliding them on the slide rail 211, enabling one machine to accommodate multiple blade sizes. The spacing of the pre-set lifting holes on the surface of the wind turbine blades varies with the blade length. The connection points 211a slide horizontally along the slide rail 211, precisely matching the spacing of the lifting holes for different blades, eliminating the need to replace the boom assembly 2 or customize special lifting tools, thus reducing equipment procurement costs.

[0031] Please see Figure 1 In one embodiment, the wind turbine blade handling device 100 further includes an alarm component 5. Conductive fibers 221a are embedded within the anti-slip coating 221, and are electrically connected to the control component. The alarm component 5 is signal-connected to the control component. When the anti-slip coating 221 wears down to a preset thickness, the control component activates the alarm component 5 to issue a warning. Traditional anti-slip coating 221 maintenance relies on fixed cycles, which can easily lead to premature replacement when the coating is still usable, resulting in wasted costs, or sudden failure after exceeding its service life, potentially causing accidents. When the surface conductive fibers 221a break, the alarm component 5 issues a yellow warning, indicating insufficient remaining coating life. Maintenance can then be scheduled in conjunction with the production plan to avoid emergency shutdowns affecting work progress. When deep conductive fibers 221a break, the alarm component 5 issues an alarm, forcing immediate coating replacement to prevent accidents caused by operators ignoring warnings and continuing use. The number of broken conductive fiber layers can be used to determine the wear rate, helping to develop targeted maintenance plans.

[0032] Please see Figure 1 In one embodiment, the surface of the pressure plate 32 is provided with a plurality of evenly distributed elastic protrusions 321. The elastic protrusions 321 can be embedded into the tiny pits on the surface of the fan blades to form a mechanical locking effect similar to gear meshing. The elastic material itself has a higher coefficient of friction than metal or hard plastic, and the actual contact area between the protrusion and the object surface after being pressed is larger than that of the smooth pressure plate 32, further enhancing the friction effect.

[0033] Please see Figure 4In one embodiment, the flexible lifting sling 22 further includes a load-bearing fiber layer 223 and a cut-resistant layer 224. The cut-resistant layer 224, the load-bearing fiber layer 223, and the anti-slip coating 221 are arranged sequentially from the inside out. The cut-resistant layer 224 is a polyethylene fiber woven mesh. As the innermost structure, the cut-resistant layer 224, made of polyethylene fiber woven mesh, is designed to resist cutting or puncture by sharp external objects, protecting the middle load-bearing fiber layer 223 from damage. The load-bearing fiber layer 223 uses high-modulus fibers, which, through warp and weft weaving or parallel twisting, can evenly distribute the weight of the lifted object to each fiber, ensuring that the flexible lifting sling 22 does not undergo plastic deformation or breakage under rated load.

[0034] The above are merely exemplary embodiments of this utility model and do not limit the scope of protection of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A wind turbine blade conveying device, characterized in that, include: A support platform, the bottom of which is provided with multiple rectangular casters with braking function; A boom assembly includes a telescopic boom, a flexible lifting belt, and at least two lifting components. The two lifting components are spaced apart from the telescopic boom. Both ends of the flexible lifting belt are connected to the traction ends of the two lifting components, respectively. The fixed end of the telescopic boom is rotatably connected to the support platform. The surface of the flexible lifting belt is provided with an anti-slip coating and a tension sensor. An elastic holding assembly includes an electric push rod and a pressure plate. The cylinder of the electric push rod is connected to the support platform, and the output end of the electric push rod is connected to the pressure plate. The pressure plate is a honeycomb silicone pressure plate, and a pressure sensor is installed inside the pressure plate. The control component, including the pressure sensor, the electric push rod, the lifting component, and the tension sensor, is all connected to the control component via signal transmission.

2. The wind turbine blade conveying device as described in claim 1, characterized in that, The number of boom assemblies is at least two, and the two boom assemblies are arranged at intervals on the support platform.

3. The wind turbine blade conveying device as described in claim 1, characterized in that, The wind turbine blade transport device also includes a support assembly, the number of which is equal to the number of casters. The support assembly is located at the bottom of the support platform and close to the casters. The output shaft of the support assembly can extend or retract vertically to adjust the height of the support platform.

4. The wind turbine blade conveying device as described in claim 3, characterized in that, The support assembly includes a drive component and a support leg. The support leg is connected to the output shaft of the drive component, and the drive component is disposed at the bottom of the support platform.

5. The wind turbine blade conveying device as described in claim 4, characterized in that, The support assembly also includes a displacement sensor, which is disposed on the support leg, and the support assembly is signal-connected to the control assembly.

6. The wind turbine blade conveying device as described in claim 4, characterized in that, The end of the support leg away from the drive component is provided with an anti-slip pad.

7. The wind turbine blade conveying device according to any one of claims 1 to 6, characterized in that, The telescopic arm has a horizontally extending slide rail at its end, and multiple connection points are slidably connected on the slide rail. The fixed end of the lifting component is connected to the connection points.

8. The wind turbine blade conveying device according to any one of claims 1 to 6, characterized in that, The wind turbine blade handling device also includes an alarm component. The anti-slip coating is embedded with conductive fibers, which are electrically connected to the control component. The alarm component is signal-connected to the control component. When the anti-slip coating wears down to a preset thickness, the control component will activate the alarm component to issue an early warning.

9. The wind turbine blade conveying device according to any one of claims 1 to 6, characterized in that, The surface of the pressure plate is provided with a plurality of evenly distributed elastic protrusions.

10. The wind turbine blade conveying device according to any one of claims 1 to 6, characterized in that, The flexible lifting sling also includes a load-bearing fiber layer and a cut-resistant layer. The cut-resistant layer, the load-bearing fiber layer, and the anti-slip coating are arranged sequentially from the inside out. The cut-resistant layer is a polyethylene fiber woven mesh.

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