A repairing auxiliary device for a fan blade crack

Abstract

The utility model relates to blade repair auxiliary, specifically disclose a kind of repair auxiliary device of fan blade cracking, including a pair of adsorption device, to connect the connecting band of a pair of adsorption device, fixed block in the middle part of connecting band, the first bolt being connected with fixed block in screw thread, and the pressing plate being located between a pair of adsorption device;Adsorption device is used to adsorb on the surface of blade, the first bolt and pressing plate abut, pressing plate is used to press in the cracking of blade, and the electric heating wire is equipped in the inside of pressing plate.The repair auxiliary device of fan blade cracking of the utility model, it can assist heating solidification to glue, and the repair place is pressed tightly and compacted sufficiently.

Description

Technical Field

[0001] This utility model relates to the technical field of blade repair assistance, and more specifically, to a repair assistance device for cracked wind turbine blades. Background Technology

[0002] In the field of wind power generation, wind turbine blades, as core components, are subjected to complex conditions such as strong winds, temperature differences, and dust storms over long periods of time, making them prone to cracking and damage. Currently, the mainstream repair method in the industry is the "glue + fiber cloth" repair method. The conventional operation procedure is to first grind and clean the surface of the cracked area to remove impurities and aging layers. Then, structural adhesive is applied layer by layer to the cracked area, and fiber cloth is laid on top. After the adhesive has cured naturally, the repaired area is ground smooth to restore the aerodynamic shape of the blade surface.

[0003] However, this conventional repair method has significant drawbacks: firstly, conventional room-temperature curing adhesives have a long curing cycle, typically requiring tens of minutes or even hours to fully cure. During this period, the blades need to be shut down for extended periods, severely impacting the wind farm's power generation efficiency and increasing operation and maintenance costs. Secondly, when manually laying the fiber cloth and applying the adhesive, it is difficult to ensure sufficient adhesion between the fiber cloth and the adhesive. Uneven pressure can easily leave air bubbles, leading to stress concentration at the repair site, reducing repair strength and durability, and potentially causing cracking to recur later. To address these issues, an auxiliary device for wind turbine blade repair needs to be designed. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary device for repairing cracked wind turbine blades, which can assist in heating and curing the adhesive and fully pressing and compacting the repair area.

[0005] This utility model is achieved through the following technical solution: The auxiliary device for repairing cracked wind turbine blades of this utility model includes a pair of adsorption devices, a connecting band for connecting the pair of adsorption devices, a fixing block disposed in the middle of the connecting band, a first bolt threadedly connected to the fixing block, and a pressure plate disposed between the pair of adsorption devices; the adsorption devices are used to adsorb onto the surface of the blade, the first bolt abuts against the pressure plate, the pressure plate is used to press on the cracked part of the blade, and an electric heating wire is provided inside the pressure plate.

[0006] Furthermore, a connecting pipe is fixedly provided on the side of the pressure plate away from the blade; the first bolt is rotatably connected to the connecting pipe.

[0007] Furthermore, the pressure plate has an arc-shaped structure, and the center of the pressure plate is located on the side of the pressure plate closest to the blade.

[0008] Furthermore, the pressure plate is made of a flexible metal material.

[0009] Furthermore, the adsorption device includes a suction cup adsorbed on the surface of the blade, a connecting plate connected to the side of the suction cup away from the blade, and a connecting block disposed on the connecting plate; the connecting strip is connected to the connecting block.

[0010] Furthermore, multiple suction cups are provided, and the multiple suction cups are respectively located around the connecting plate.

[0011] Furthermore, a ball head seat is provided on the side of the suction cup near the connecting plate, and a ball head is rotatably provided in the ball head seat. The ball head is connected to a connecting rod, and the connecting rod is fixedly connected to the connecting plate.

[0012] Furthermore, the connecting block has an elongated connecting hole, and a second bolt is threaded onto the upper side of the connecting block. A fixing plate is provided in the connecting hole; the connecting strip passes through the connecting hole, and the second bolt is rotatably connected to the fixing plate, with the fixing plate pressed against the surface of the connecting strip.

[0013] Furthermore, the connecting band is made of an elastic fiber material.

[0014] The technical solution of this utility model has at least the following advantages and beneficial effects: In the auxiliary device for repairing cracked wind turbine blades, adhesive is first applied to the cracked area of ​​the blade, and then fiber cloth is attached. Next, an adsorption device is fixed to the blades on both sides of the crack, and a pair of adsorption devices are connected using a connecting strap. Then, a pressure plate is pressed onto the cracked area of ​​the blade, and the first bolt is tightened. The first bolt compresses the pressure plate, applying pressure to the adhesive and fiber cloth at the cracked area, thus pressing the adhesive and fiber cloth firmly together. Then, the heating wire inside the pressure plate is energized to heat the adhesive, causing it to cure quickly. This effectively improves the repair effect and efficiency of cracked blades. Attached Figure Description

[0015] Figure 1 A schematic diagram of the auxiliary device for repairing cracked wind turbine blades provided in this embodiment of the present invention during use;

[0016] Figure 2 A schematic diagram of the structure of the auxiliary device for repairing cracked wind turbine blades provided in this embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the adsorption device provided in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the pressure plate portion provided in an embodiment of the present utility model.

[0019] Icons: 10-Adsorption device, 11-Suction cup, 12-Connecting plate, 13-Connecting block, 14-Connecting hole, 15-Fixing plate, 16-Second bolt, 17-Ball head seat, 18-Connecting rod, 21-Connecting belt, 22-Fixing block, 23-First bolt, 24-Pressure plate, 25-Connecting pipe, 30-Blade. Detailed Implementation

[0020] Example

[0021] The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 -Appendix Figure 4 As shown, the auxiliary device for repairing cracked wind turbine blades in this embodiment includes a pair of adsorption devices 10, a connecting band 21 for connecting the pair of adsorption devices 10, a fixing block 22 located in the middle of the connecting band 21, a first bolt 23 threadedly connected to the fixing block 22, and a pressure plate 24 located between the pair of adsorption devices 10. The adsorption devices 10 are used to adsorb onto the surface of the blade 30, the first bolt 23 abuts against the pressure plate 24, the pressure plate 24 is used to press on the cracked part of the blade 30, and the pressure plate 24 is provided with an electric heating wire inside. Specifically, during use, first apply glue to the cracked area of ​​the blade 30 and attach fiber cloth. Then, fix the adsorption device 10 to the blades 30 on both sides of the cracked area, connect the pair of adsorption devices 10 using the connecting strap 21, and then press the pressure plate 24 onto the cracked area of ​​the blade 30. Tighten the first bolt 23 to squeeze the pressure plate 24, so that the pressure plate 24 has a certain compressive force on the glue and fiber cloth at the cracked area of ​​the blade 30, pressing the glue and fiber cloth tightly. Then, energize the heating wire inside the pressure plate 24 to heat it, and the glue will cure quickly through heating. This can effectively improve the effect and efficiency of repairing the cracked area of ​​the blade 30.

[0022] In this embodiment, a connecting pipe 25 is fixedly provided on the side of the pressure plate 24 away from the blade 30; the first bolt 23 is rotatably connected to the connecting pipe 25. Specifically, the connecting pipe 25 can effectively position the first bolt 23, preventing the first bolt 23 from slipping off the pressure plate 24.

[0023] In this embodiment, the pressure plate 24 has an arc-shaped structure, with its center located on the side closest to the blade 30. The pressure plate 24 is made of an elastic metal material. Specifically, the arc-shaped pressure plate 24 deforms after being pressed by the first bolt 23 and then fully adheres to the outer wall of the blade 30, resulting in better adhesion between the pressure plate 24 and the outer wall of the blade 30 and stronger compressive force.

[0024] The adsorption device 10 in this embodiment includes a suction cup 11 adsorbed onto the surface of the blade 30, a connecting plate 12 connected to the side of the suction cup 11 away from the blade 30, and a connecting block 13 disposed on the connecting plate 12; a connecting strap 21 is connected to the connecting block 13. Multiple suction cups 11 are provided, and the multiple suction cups 11 are respectively disposed around the perimeter of the connecting plate 12. Specifically, multiple suction cups 11 can more firmly adsorb onto the surface of the blade 30, and common negative pressure suction cups 11 can be used.

[0025] In this embodiment, the suction cup 11 is provided with a ball head seat 17 on the side near the connecting plate 12. A ball head is rotatably provided in the ball head seat 17, and the ball head is connected to a connecting rod 18. The connecting rod 18 is fixedly connected to the connecting plate 12. Specifically, the suction cup 11 and the connecting plate 12 are connected by the connecting rod 18, the ball head, and the ball head seat 17, so that each suction cup 11 can rotate within a certain range, which provides a better adsorption effect on the irregular surface of the blade 30.

[0026] In this embodiment, the connecting block 13 has an elongated connecting hole 14. A second bolt 16 is threaded onto the upper side of the connecting block 13, and a fixing plate 15 is provided in the connecting hole 14. The connecting band 21 passes through the connecting hole 14, and the second bolt 16 is rotatably connected to the fixing plate 15. The fixing plate 15 is pressed against the surface of the connecting band 21. Specifically, when fixing the connecting band 21, the connecting band 21 is passed through the connecting hole 14, and then the second bolt 16 is turned. The fixing plate 15 compresses the connecting band 21, thereby locking the connecting band 21 into the fixing hole. This makes installation and disassembly very convenient.

[0027] In this embodiment, the connecting strip 21 is made of an elastic fiber material. Specifically, this allows the connecting strip 21 to deform arbitrarily and has a certain degree of elasticity, enabling it to better adapt to different curvatures on the surface of the blade 30.

[0028] In summary, the auxiliary device for repairing cracked wind turbine blades in this embodiment involves first applying glue and attaching fiber cloth to the cracked area of ​​the blade 30. Then, the adsorption device 10 is fixed to the blades 30 on both sides of the crack. A pair of adsorption devices 10 are connected using a connecting strap 21. Next, the pressure plate 24 is pressed onto the cracked area of ​​the blade 30, and the first bolt 23 is turned. The pressure plate 24 is then compressed by the first bolt 23, which exerts a certain compressive force on the glue and fiber cloth at the cracked area of ​​the blade 30, pressing the glue and fiber cloth tightly. Then, the heating wire inside the pressure plate 24 is energized to heat the glue, which then cures the glue quickly. This effectively improves the repair effect and efficiency of the cracked area of ​​the blade 30.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A repair auxiliary device for cracked wind turbine blades, characterized in that: It includes a pair of adsorption devices (10), a connecting band (21) for connecting the pair of adsorption devices (10), a fixing block (22) disposed in the middle of the connecting band (21), a first bolt (23) threadedly connected to the fixing block (22), and a pressure plate (24) disposed between the pair of adsorption devices (10). The adsorption device (10) is used to adsorb onto the surface of the blade (30). The first bolt (23) abuts against the pressure plate (24). The pressure plate (24) is used to press against the crack of the blade (30). The pressure plate (24) is provided with an electric heating wire inside.

2. The auxiliary device for repairing cracked wind turbine blades according to claim 1, characterized in that: A connecting pipe (25) is fixedly provided on the side of the pressure plate (24) away from the blade (30); the first bolt (23) is rotatably connected to the connecting pipe (25).

3. The auxiliary device for repairing cracked wind turbine blades according to claim 1, characterized in that: The pressure plate (24) has an arc-shaped structure, and the center of the pressure plate (24) is located on the side of the pressure plate (24) close to the blade (30).

4. The auxiliary device for repairing cracked wind turbine blades according to claim 3, characterized in that: The pressure plate (24) is made of a flexible metal material.

5. The auxiliary device for repairing cracked wind turbine blades according to claim 1, characterized in that: The adsorption device (10) includes a suction cup (11) adsorbed on the surface of the blade (30), a connecting plate (12) connected to the side of the suction cup (11) away from the blade (30), and a connecting block (13) provided on the connecting plate (12). The connecting strip (21) is connected to the connecting block (13).

6. The auxiliary device for repairing cracked wind turbine blades according to claim 5, characterized in that: The suction cups (11) are provided in multiple ways, and the multiple suction cups (11) are respectively located around the connecting plate (12).

7. The auxiliary device for repairing cracked wind turbine blades according to claim 6, characterized in that: The suction cup (11) has a ball head seat (17) on the side near the connecting plate (12). A ball head is rotatably provided in the ball head seat (17), and a connecting rod (18) is connected to the ball head. The connecting rod (18) is fixedly connected to the connecting plate (12).

8. The auxiliary device for repairing cracked wind turbine blades according to claim 5, characterized in that: The connecting block (13) has an elongated connecting hole (14), and a second bolt (16) is threaded onto the upper side of the connecting block (13). A fixing piece (15) is provided in the connecting hole (14). The connecting band (21) is provided through the connecting hole (14), the second bolt (16) is rotatably connected to the fixing piece (15), and the fixing piece (15) is pressed onto the surface of the connecting band (21).

9. The auxiliary device for repairing cracked wind turbine blades according to claim 1, characterized in that: The connecting strip (21) is made of an elastic fiber material.

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