Fan blade automatic polishing device

Abstract

The application provides a fan blade automatic polishing device, and relates to the technical field of blade polishing.The fan blade automatic polishing device comprises a gantry, the upper end of the gantry is provided with a position adjusting mechanism, the position adjusting mechanism is connected with a polishing mechanism through an angle adjusting mechanism, the polishing mechanism is used for polishing the fan blade, the side end of the gantry is provided with a clamping mechanism, the clamping mechanism is used for fixing the fan blade, the side lower end of the fan blade away from the clamping mechanism is provided with a supporting pad, the position adjusting mechanism can drive the polishing mechanism to move in four directions of front, back, left and right, can also drive the polishing mechanism to rotate on a horizontal plane, and can adjust the polishing mechanism to rotate on a vertical plane, the clamping mechanism can drive the fan blade to rotate on the vertical plane, so that the position and angle of the polishing mechanism and the angle of the fan blade are changed, the automatic polishing of the fan blade in all directions is realized, the polishing of the fan blade by a multi-axis machining center can be replaced, and the cost of purchasing the multi-axis machining center is saved.

Description

Technical Field

[0001] This invention relates to the field of blade grinding technology, specifically to an automatic grinding device for wind turbine blades. Background Technology

[0002] Wind turbine blades are the main components of wind power generation equipment. After long-term outdoor operation, the blades will be subject to cavitation, water erosion, rust, and wear damage, which will change their shape and size and make their surface rough, requiring regular maintenance and polishing. Currently, when repairing and polishing wind turbine blades, due to the irregular surface of the blades, it is time-consuming, labor-intensive, and inefficient to polish each part of the blade manually using a handheld polishing device. If a multi-axis machining center is used to polish the wind turbine blades, the cost of purchasing a multi-axis machining center is too high. Summary of the Invention

[0003] This invention provides an automatic wind turbine blade grinding device to solve the aforementioned technical problems. Due to the irregular surface of the blades, grinding wind turbine blades by manually holding a grinding device to grind each part of the blade one by one is time-consuming, labor-intensive, and inefficient. Furthermore, if a multi-axis machining center is used to grind wind turbine blades, the cost of purchasing a multi-axis machining center is too high.

[0004] To solve the above-mentioned technical problems, the present invention discloses an automatic wind turbine blade grinding device, including a gantry frame, a position adjustment mechanism installed at the upper end of the gantry frame, the position adjustment mechanism being connected to a grinding mechanism through an angle adjustment mechanism, the grinding mechanism being used to grind the wind turbine blade, a clamping mechanism installed at the side end of the gantry frame, the clamping mechanism being used to fix the wind turbine blade, and a support pad being provided at the lower end of the side of the wind turbine blade away from the clamping mechanism.

[0005] Preferably, the gantry frame includes a top frame, and the front and rear parts of the top frame are symmetrically provided with sliding grooves on their respective sides, and a leg is provided at the lower corner of the top frame.

[0006] Preferably, the position adjustment mechanism includes a frame one and a frame two. The left and right sides of the frame one are symmetrically provided with sliding grooves two. Two rolling wheels two are provided in the sliding grooves two along the front-back direction. The frame two is fixedly provided between the rolling wheels two in the left and right sliding grooves two. The middle part of the frame two is threadedly connected to the threaded section of the threaded rod two. The cylindrical section of the threaded rod two passes through the front end of the frame one and is fixedly connected to the motor two. The motor two is fixedly set at the front end of the frame one. The cylindrical section of the threaded rod two is rotatably connected to the front and rear ends of the frame one.

[0007] Preferably, the upper left and right sides of the frame one are symmetrically provided with connecting frames, and the front and rear ends of the connecting frames are symmetrically provided with rolling wheels one. The rolling wheels one is set in the sliding groove one. The middle part of the connecting frame is threadedly connected to the threaded section of the threaded rod one. The cylindrical section of the threaded rod one passes through the right end of the top frame and is fixedly connected to the motor one. The cylindrical section of the threaded rod one is rotatably connected to the left and right ends of the top frame. The motor one is fixedly set at the right end of the top frame.

[0008] Preferably, the angle adjustment mechanism includes a mounting plate fixedly installed at the lower end of the second frame. The lower end of the mounting plate is fixedly connected to a fixed sleeve. The fixed sleeve is rotatably connected to a rotating shaft. A positioning screw is threadedly connected to the side end of the fixed sleeve. The positioning screw is in corresponding contact with the rotating shaft. The rotating shaft is fixedly connected to a rotating plate. A hinge seat is eccentrically provided at the lower end of the rotating plate. The hinge seat is rotatably connected to the movable section of the electric telescopic rod. The fixed section of the electric telescopic rod is rotatably connected to the mounting rod. The mounting rod is fixedly connected to one side of the upper end of the mounting seat. A support seat is fixedly provided at the middle of the upper end of the mounting seat. The support seat is rotatably connected to a support block through a support shaft. The support block is fixedly connected to the middle of the lower end of the rotating plate.

[0009] Preferably, the grinding mechanism includes a motor three fixedly mounted on the upper end of the mounting base away from the mounting rod. The motor three is fixedly connected to a pulley one via a motor shaft. The pulley one is connected to a pulley two via a conveyor belt. The pulley two is fixedly connected to the drive part of the connecting rod. The drive part of the connecting rod is rotatably connected to the mounting block at the lower end of the mounting base. The mounting part of the connecting rod corresponds to and cooperates with the grinding disc. The mounting part of the connecting rod is threadedly connected to the locking block. The diameter of the drive part of the connecting rod is larger than the diameter of the mounting part of the connecting rod.

[0010] Preferably, a spring rod is fixedly provided on the upper end of the mounting base near the mounting rod, and the spring rod is fixedly connected to the sliding plate. A connecting block is fixedly provided on the lower end of the sliding plate near the grinding disc. A connecting groove is provided in the middle of the lower end of the connecting block. A laser rangefinder is installed in the connecting groove. The laser rangefinder is correspondingly set on the upper side of the grinding disc. A laser rangefinder is installed on the lower end of the connecting block away from the mounting base.

[0011] Preferably, the connecting rod and the locking block are provided with alignment holes in the vertical direction, and the alignment holes are set corresponding to the laser rangefinder II. The alignment holes allow the laser emitted by the laser rangefinder II to pass through. Both the laser rangefinder I and the laser rangefinder II are electrically connected to the electric telescopic rod through the controller, and both the laser rangefinder I and the laser rangefinder II are electrically connected to the motor II through the controller.

[0012] Preferably, the clamping mechanism includes a fixed frame and a fixed plate fixedly connected to the right support leg. A rotating sleeve is rotatably provided on the fixed plate. A rotating wheel is fixedly provided on the outside of the right side of the rotating sleeve. A through hole is provided inside the rotating sleeve. A clamping sleeve is rotatably provided in the through hole. The right end of the clamping sleeve is rotatably connected to an L-shaped support plate. The L-shaped support plate is fixedly connected to the fixed plate. A clamping hole is provided at the left end of the clamping sleeve. A rod part of the fan blade is correspondingly provided in the clamping hole. A plurality of clamping rods are evenly distributed in the circumferential direction in the clamping hole. The plurality of clamping rods pass through the side end of the clamping hole and contact the guide block accordingly.

[0013] Preferably, a number of guide blocks are evenly distributed circumferentially in the through hole, and the number of guide blocks are in contact with a number of clamping rods in a corresponding manner. A sliding sleeve is slidably provided on the clamping sleeve, and the side end of the sliding sleeve is fixedly connected to the L-shaped positioning rod and the positioning block. The positioning blocks are correspondingly set between adjacent positioning segments on the positioning ring. A number of positioning segments are evenly distributed circumferentially on the positioning ring. The positioning ring is fixedly set at the right end of the rotating sleeve. The L-shaped positioning rod is correspondingly engaged with a number of positioning holes evenly distributed circumferentially on the right end of the fixed plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The position adjustment mechanism can drive the grinding mechanism to move in four directions: front, back, left, and right. It can also drive the grinding mechanism to rotate on the horizontal plane and adjust the grinding mechanism to rotate in the vertical plane. The clamping mechanism can drive the fan blades to rotate in the vertical plane. By changing the position and angle of the grinding mechanism and the angle of the fan blades, it can achieve automatic grinding of the fan blades in all directions. It can replace multi-axis machining centers for grinding fan blades, saving the cost of purchasing multi-axis machining centers. It can also replace manual grinding, improving grinding efficiency. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the position adjustment mechanism of the present invention; Figure 4 This is a schematic diagram of the connection structure between the angle adjustment mechanism and the grinding mechanism of the present invention; Figure 5 This is a schematic diagram of the spring rod connection structure of the present invention. Figure 6 This is a schematic diagram of the grinding mechanism of the present invention; Figure 7This is a schematic diagram of the clamping mechanism structure of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the clamping mechanism structure of the present invention. Figure 2 .

[0016] In the diagram: 1. Fan blades; 2. Support leg; 3. Top frame; 4. Connecting frame; 5. Roller 1; 6. Threaded rod 1; 7. Motor 1; 8. Frame 1; 9. Frame 2; 10. Threaded rod 2; 11. Motor 2; 12. Support pad; 13. Spring rod; 14. Fixing frame; 15. Fixing plate; 16. Roller 2; 17. Mounting plate; 18. Fixing sleeve; 19. Rotating shaft; 20. Rotating plate; 21. Support block; 22. Electric telescopic rod; 23. Mounting base; 24. Grinding disc; 25. Motor 3; 26. Belt 1. Wheel 1; 27. Conveyor Belt; 28. Support Base; 29. ​​Positioning Screw; 30. Mounting Rod; 31. Pulley 2; 32. Connecting Rod; 33. Locking Block; 34. Connecting Block; 35. Positioning Block; 36. Laser Rangefinder 2; 37. Sliding Plate; 38. Alignment Hole; 39. Positioning Ring; 40. Rotating Wheel; 41. Rotating Sleeve; 42. Clamping Sleeve; 43. Clamping Rod; 44. Guide Block; 45. Sliding Sleeve; 46. L-shaped Positioning Rod; 47. Clamping Hole; 48. Positioning Hole; 49. L-shaped Support Plate; 50. Mounting Block. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features 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. If a 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 invention.

[0019] The present invention provides the following embodiments: Example 1: This embodiment of the invention provides an automatic grinding device for wind turbine blades, such as... Figures 1-2As shown, the device includes a gantry frame, with a position adjustment mechanism installed at the upper end of the gantry frame. The position adjustment mechanism is connected to a grinding mechanism via an angle adjustment mechanism. The grinding mechanism is used to grind the fan blades 1. A clamping mechanism is installed at the side end of the gantry frame. The clamping mechanism is used to fix the fan blades 1. A support pad 12 is provided at the lower end of the side of the fan blades 1 away from the clamping mechanism.

[0020] The working principle of the above technical solution is as follows: The support pad 12 is placed on the side of the fan blade 1 away from the clamping mechanism, supporting one side of the fan blade 1. The clamping mechanism supports and fixes the other side of the fan blade 1, thus supporting and fixing both sides of the fan blade 1 along its length, reducing the shaking of the fan blade 1 during the grinding process. The position adjustment mechanism can drive the grinding mechanism to move in four directions: front, back, left, and right. It can also drive the grinding mechanism to rotate in the horizontal plane and adjust the rotation of the grinding mechanism in the vertical plane. The clamping mechanism can drive the fan blade 1 to rotate in the vertical plane, thereby... By changing the position and angle of the grinding mechanism and the angle of the fan blade 1, the fan blade 1 can be automatically ground in all directions. This eliminates the need for a multi-axis machining center to grind the fan blade 1, saving the cost of purchasing a multi-axis machining center. It can replace manual grinding, improve grinding efficiency, and solve the technical problems of the irregular blade surface. If a manual hand-held grinding device is used to grind each part of the blade one by one, it is time-consuming, labor-intensive, and inefficient. If a multi-axis machining center is used to grind the fan blade, the cost of purchasing a multi-axis machining center is too high.

[0021] Example 2: Based on Example 1, as follows Figures 1-3 As shown, the gantry includes a top frame 3. The front and rear parts of the top frame 3 are symmetrically provided with sliding grooves on their respective sides. A leg 2 is provided at the lower corner of the top frame 3. The position adjustment mechanism includes a frame 8 and a frame 9. The left and right sides of the frame 8 are symmetrically provided with sliding grooves 2. Two rolling wheels 26 are provided in the sliding grooves 2 along the front-back direction. The frame 9 is fixed between the rolling wheels 26 in the left and right sliding grooves 2. The middle part of the frame 9 is threadedly connected to the threaded section of the threaded rod 20. The cylindrical section of the threaded rod 20 passes through the front end of the frame 8 and is fixedly connected to the motor 21. The motor 21 is fixedly set at the front end of the frame 8. The cylindrical section of the threaded rod 20 is rotatably connected to the front and rear ends of the frame 8. The upper left and right sides of the frame 8 are symmetrically provided with connecting frames 4. The front and rear ends of the connecting frames 4 are symmetrically provided with rolling wheels 5. The rolling wheels 5 are set in the sliding groove. The middle part of the connecting frame 4 is threadedly connected to the threaded section of the threaded rod 6. The cylindrical section of the threaded rod 6 passes through the right end of the top frame 3 and is fixedly connected to the motor 7. The cylindrical section of the threaded rod 6 is rotatably connected to the left and right ends of the top frame 3. The motor 7 is fixedly set at the right end of the top frame 3.

[0022] The working principle of the above technical solution is as follows: When motor 7 is working, it drives threaded rod 6 to rotate. When threaded rod 6 rotates, it drives connecting frame 4 to move left and right. Connecting frame 4 drives frame 8 to move left and right. Frame 8 drives frame 9 to move left and right. Connecting frame 4 drives rolling wheel 5 to roll along sliding groove 1, which supports and guides the movement of connecting frame 4. When motor 11 is working, it drives frame 9 to move back and forth. Frame 9 drives rolling wheel 16 to roll along sliding groove 2, thus realizing the purpose of frame 9 moving in four directions: left, right, front, and back.

[0023] Example 3: Based on Example 2, such as Figures 1-6 As shown, the angle adjustment mechanism includes a mounting plate 17 fixedly installed at the lower end of frame 2 9. The lower end of the mounting plate 17 is fixedly connected to a fixing sleeve 18. The fixing sleeve 18 is rotatably connected to a rotating shaft 19. A positioning screw 29 is threadedly connected to the side end of the fixing sleeve 18. The positioning screw 29 is in corresponding contact with the rotating shaft 19. The rotating shaft 19 is fixedly connected to a rotating plate 20. A hinge seat is eccentrically provided at the lower end of the rotating plate 20. The hinge seat is rotatably connected to the movable section of the electric telescopic rod 22. The fixed section of the electric telescopic rod 22 is rotatably connected to a mounting rod 30. The mounting rod 30 is fixedly connected to one side of the upper end of the mounting base 23. A support seat 28 is fixedly provided at the middle of the upper end of the mounting base 23. The support seat 28 is rotatably connected to a support block 21 through a support shaft. The support block 21 is fixedly connected to the middle of the lower end of the rotating plate 20.

[0024] The working principle of the above technical solution is as follows: When frame 29 moves, it drives the mounting plate 17 on the angle adjustment mechanism to move, causing the angle adjustment mechanism to move. When controlling the rotation of the rotating shaft 19, the positioning screw 29 is turned so that the positioning screw 29 is disengaged from the rotating shaft 19. At this time, the rotation of the rotating shaft 19 can be freely controlled. The rotating shaft 19 drives the rotating plate 20 to rotate in the horizontal plane. After the rotation is completed, the positioning screw 29 is turned in the opposite direction so that the positioning screw 29 is pressed against the rotating shaft 19 to prevent the rotating shaft 19 from rotating. When the rotating plate 20 rotates, it drives the support block 21 to rotate. When the electric telescopic rod 22 extends or retracts, it can drive the mounting rod 30 to move. The mounting rod 30 drives the mounting base 23 to move. The mounting base 23 drives the support base 28 to rotate in the vertical plane with the support shaft as the center. By rotatably connecting the electric telescopic rod 22 to the hinge base and the mounting rod 30 respectively, the electric telescopic rod 22 can rotate freely. When the electric telescopic rod 22 extends or retracts, it can ensure that the rotation of the mounting base 23 is smooth. The mounting base 23 can rotate in the horizontal plane with the support base 28, the support shaft, the support block 21 and the rotating plate 20 with the rotating shaft 19 as the center. The mounting base 23 can also rotate in the vertical plane with the support base 28 with the support shaft as the center. Moreover, the mounting base 23 can move in the four directions of left, right, front and back with the frame 2 9.

[0025] Example 4: Based on Example 3, such as Figures 1-6 As shown, the grinding mechanism includes a motor 25 fixedly mounted on the upper end of the mounting base 23 away from the mounting rod 30. The motor 25 is fixedly connected to a pulley 26 via a motor shaft. The pulley 26 is connected to a pulley 31 via a conveyor belt 27. The pulley 31 is fixedly connected to the drive part of the connecting rod 32. The drive part of the connecting rod 32 is rotatably connected to the mounting block 50 at the lower end of the mounting base 23. The mounting part of the connecting rod 32 corresponds to and cooperates with the grinding disc 24. The mounting part of the connecting rod 32 is threadedly connected to the locking block 33. The diameter of the drive part of the connecting rod 32 is larger than the diameter of the mounting part of the connecting rod 32.

[0026] The working principle of the above technical solution is as follows: The grinding mechanism is mounted on the mounting base 23, enabling it to move in four directions (forward, backward, left, and right) and rotate in both the horizontal and vertical planes. This allows for adjustment of the position of the grinding disc 24. When the motor 3 25 is working, it drives the pulley 1 26 to rotate via the motor shaft. The pulley 1 26 drives the pulley 21 31 to rotate via the conveyor belt 27. The pulley 21 drives the grinding disc 24 to rotate via the connecting rod 32. The grinding disc 24 grinds the fan blades 1. When replacing the grinding disc 24, loosen the locking block 33 to separate the grinding disc 24 from the mounting part of the connecting rod 32. The diameter of the driving part of the connecting rod 32 is larger than the diameter of the mounting part of the connecting rod 32. To limit the movement of the grinding disc 24, a positioning block can be provided on the side of the drive part of the connecting rod 32 near the mounting part, and a positioning hole can be provided on the grinding disc 24. After the grinding disc 24 and the mounting part of the connecting rod 32 are assembled, the positioning block and the positioning hole are engaged. Then, the locking block 33 is tightened to prevent the grinding disc 24 and the connecting rod 32 from rotating relative to each other. This ensures that the rotation direction of the connecting rod 32 is the locking direction of the locking block 33, making the connection between the locking block 33 and the connecting rod 32 more stable when the connecting rod 32 rotates. This prevents the connecting rod 32 and the locking block 33 from falling off, which would affect the assembly of the grinding disc 24 and the connecting rod 32, and ultimately affect the grinding work of the grinding disc 24.

[0027] Example 5: Based on Example 4, such as Figures 1-6 As shown, a spring rod 13 is fixedly provided on the upper end of the mounting base 23 near the mounting rod 30. The spring rod 13 is fixedly connected to the sliding plate 37. A connecting block 34 is fixedly provided on the lower end of the sliding plate 37 near the grinding disc 24. A connecting groove is provided in the middle of the lower end of the connecting block 34. A laser rangefinder 1 is installed in the connecting groove. The laser rangefinder 1 is correspondingly set on the upper side of the grinding disc 24. A laser rangefinder 2 36 is installed on the lower end of the connecting block 34 away from the mounting base 23. The connecting rod 32 and the locking block 33 are provided with alignment holes 38 in the vertical direction. The alignment holes 38 are corresponding to the laser rangefinder 36. The alignment holes 38 allow the laser emitted by the laser rangefinder 36 to pass through. Both the laser rangefinder 1 and the laser rangefinder 26 are electrically connected to the electric telescopic rod 22 through the controller. Both the laser rangefinder 1 and the laser rangefinder 26 are electrically connected to the motor 11 through the controller.

[0028] The working principle of the above technical solution is as follows: When the grinding disc 24 grinds the fan blade 1, wear will occur, causing the diameter of the grinding disc 24 to gradually decrease. Since the fan blade 1 has a curved surface, the height of the grinding disc 24 in the vertical plane needs to be adjusted during grinding to ensure that the grinding disc 24 is always in contact with the fan blade 1. A connecting groove is provided at the lower end of the connecting block 34, and a laser rangefinder is installed in the connecting groove. After the mounting part of the grinding disc 24 and the connecting rod 32 is assembled, the upper side of the grinding disc 24 is positioned in the connecting groove. With the laser rangefinder installed, after the diameter of the grinding disc 24 decreases due to wear, the laser rangefinder can monitor the wear degree of the grinding disc 24, i.e., the grinding... The change in the diameter of the grinding disc 24 and the setting of the spring rod 13 (equivalent to a spring sleeved on a telescopic rod) allow for manual pulling of the sliding plate 37 and connecting block 34 upwards during the assembly of the grinding disc 24. This causes the spring rod 13 to extend, preventing the connecting block 34 from affecting the installation of the grinding disc 24. After assembly, the sliding plate 37 is released, and the sliding plate 37 and connecting block 34 move downwards under the elastic action of the spring rod 13. The connecting groove at the lower end of the connecting block 34 engages with the upper side of the grinding disc 24. Even if the grinding disc 24 becomes loose, the connecting groove can restrict the grinding disc 24 from moving axially along the connecting rod 32, preventing the grinding disc 24 from flying off and improving the safety protection effect. Laser rangefinder 26 is mounted on connecting block 34 and is used to detect the distance between connecting block 34 and fan blade 1. Alignment holes 38 are provided through connecting rod 32 and locking block 33 in the vertical direction. The alignment holes 38 on locking block 33 communicate with the alignment holes 38 on connecting rod 32, indicating that locking block 33 is screwed into the target position, completing the assembly of grinding disc 24 and connecting rod 32 mounting part. Furthermore, the laser emitted by laser rangefinder 26 can pass through the alignment holes 38. This allows for the detection of the distance between the laser rangefinder 26 and the fan blade 1. The detection value of 36 can determine whether the locking block 33 is tightened. If the laser cannot pass through the alignment hole 38, the detection value of the laser rangefinder 36 is the vertical distance between the upper ends of the connecting block 34 and the locking block 33, which is a fixed value. This indicates that the locking block 33 is not tightened. Alignment holes 38 are provided on the connecting rod 32 and the locking block 33. The rotation speed of the connecting rod 32 corresponds to the laser frequency emitted by the laser rangefinder 36. That is, when the connecting rod 32 rotates a certain number of times, the alignment hole 38 on it will rotate. When the laser rangefinder 26 reaches below the laser rangefinder 36, the laser rangefinder 26 emits a laser beam. This ensures the laser beam emitted by the laser rangefinder 26 can pass through the alignment hole 38, thereby detecting the distance between the laser rangefinder 26 and its corresponding fan blade 1. As the grinding disc 24 moves gradually along the length (left-right direction) of the fan blade 1 for grinding, to avoid the grinding disc 24 moving too far and creating an area that does not contact the fan blade 1, the distance the grinding disc 24 moves gradually in the left-right direction is the grinding distance. The thickness of the polishing disc 24 is such that the horizontal distance between the laser rangefinder 26 and the polishing disc 24 is less than or equal to the thickness of the polishing disc 24. That is, the position of the fan blade 1 detected by the laser rangefinder 26 is the position that the polishing disc 24 will move to next. Thus, when the polishing disc 24 moves left and right, the vertical position of the polishing disc 24 is adjusted in real time according to the arc surface of the fan blade 1 and the wear degree of the polishing disc 24. The laser rangefinder 26 is used to monitor the height change of the arc surface of the fan blade 1 when the polishing disc 24 moves left and right.

[0029] Example 6: Based on Example 5, the controller uses the formula... The theoretical rotation angle of support 28 is obtained, where The length along the horizontal direction between the center of the supporting shaft and the center of the connecting rod 32. The vertical height between the center of the supporting shaft and the center of the connecting rod 32. For cosine, For the reverse slash, For the theoretical rotation angle of support 28, The change value detected by laser rangefinder one. The value of the change detected by the laser rangefinder II.36.

[0030] The working principle of the above technical solution is as follows: The detection change value of laser rangefinder one is the difference between the real-time detection value and the initial detection value of laser rangefinder one. The initial detection value of laser rangefinder one is the distance between laser rangefinder one and the upper side of the grinding disc 24 when the grinding disc 24 is not worn. The detection change value of laser rangefinder two 36 is the difference between two consecutive detections of laser rangefinder two 36 (the real-time detection value of laser rangefinder two 36 before each movement of the grinding disc 24 and the real-time detection value of laser rangefinder two 36 after each movement, to avoid fluctuations in the detection value of laser rangefinder two 36 during the movement of the grinding disc 24 affecting the adjustment of the vertical position of the grinding disc 24). The real-time detection value is the detection value of laser rangefinder two 36 and the cosine of the tilt angle of laser rangefinder two 36. The product makes the difference between two adjacent detections the vertical height change. The tilt angle of the laser rangefinder 36 is the angle between the laser emission angle and the vertical plane. The tilt angle of the laser rangefinder 36 changes synchronously with the rotation angle of the support 28. Therefore, the tilt angle of the laser rangefinder 36 can be obtained from the rotation angle of the support 28. The difference between two adjacent detections of the laser rangefinder 36 is used as a reference value (calculated value) when the grinding disc 24 moves left and right and adjusts its up and down position synchronously. The up and down displacement that the grinding disc 24 needs to adjust when it moves left and right next is calculated in advance. If the difference is positive, it means that the arc height of the fan blade 1 has decreased. If the difference is negative, it means that the arc height of the fan blade 1 has increased. The real-time detection value of the laser rangefinder 36 is the detection value after the grinding disc 24 comes into contact with the fan blade 1. When not rotating, the horizontal line between the center of the support shaft and the center of the connecting rod 32 is taken as the horizontal right angle side, the vertical line between the center of the support shaft and the center of the connecting rod 32 is taken as the vertical right angle side, and the center of the support shaft and the center of the connecting rod 32 is taken as the hypotenuse, together forming a right triangle. The length of the horizontal right-angled side. The length of the vertical right-angled side. Let be the length of the hypotenuse. Using inverse trigonometric functions, we can determine the angle between the hypotenuse and the horizontal leg when the body is not rotated. The support base 28 rotates the connecting rod 32 around the support shaft at a certain angle. After that, it's equivalent to the right triangle rotating by an angle. At this point, the angle between the hypotenuse and the horizontal line reaches + The hypotenuse remains the hypotenuse after rotation. Since the length of the hypotenuse has not changed, trigonometric functions show that the length of the vertical line intersecting the hypotenuse is now... Subtract the length of the vertical line when it is not rotated. The vertical height change of the connecting rod 32 can be obtained. The connecting rod 32 is coaxially connected with the grinding disc 24, so the vertical height change of the grinding disc 24 can be obtained. Before the grinding disc 24 moves approximately, the real-time detection values ​​of laser rangefinder one and laser rangefinder two 36 change. If If the value is positive, then during the left and right movement, the support base 28 will be synchronously controlled to drive the grinding disc 24 to rotate downwards. If the value is negative, the support base 28 will be synchronously controlled to rotate the grinding disc 24 upwards during the left and right movement, so that the height change of the connecting rod 32 in the vertical direction is equal to the change in the height of the connecting rod 32. The same, that is, the rotation angle of the support base 28 about the support shaft reaches... Both laser rangefinder 1 and laser rangefinder 26 control the extension and retraction of the electric telescopic rod 22 through the controller, which drives the support seat 28 on the mounting base 23 to rotate around the support shaft, adjusting the up and down position of the grinding disc 24 so that the grinding disc 24 is always in contact with the fan blade 1 for grinding.

[0031] Example 7: Based on Example 6, the controller can also be configured according to the formula The target distance of the grinding disc 24 moving back and forth is obtained, where The target distance for the grinding disc 24 to move back and forth.

[0032] The working principle of the above technical solution is as follows: The right triangle in Embodiment 6 above has been rotated by an angle. The angle between the hypotenuse and the horizontal line reaches + Since the length of the hypotenuse remains unchanged, trigonometric functions show that the length of the horizontal line intersecting the hypotenuse is... The length of the horizontal line when it is not rotated Subtracting this value yields the change in length of the connecting rod 32 in the horizontal direction. If the support base 28 drives the grinding disc 24 to rotate up and down, the target distance for the grinding disc 24 to move back and forth needs to be controlled. Ensure that the grinding disc 24 is in the same vertical plane along the left-right direction before and after adjustment. For a positive value, when the support base 28 drives the grinding disc 24 to rotate downwards, the support base 28 must be simultaneously controlled to move backwards a distance of [missing value]. , When the value is negative, and the support base 28 drives the grinding disc 24 to rotate upward, the support base 28 must be moved forward a distance simultaneously. , The value is determined solely by its numerical value, regardless of whether it is positive or negative. To move the grinding disc 24 back and forth, the motor 21 needs to be controlled to move the frame 29 back and forth. The controller automatically controls the electric telescopic rod 22 and the motor 21 to work based on the detection values ​​of the laser rangefinder 1 and the laser rangefinder 26, thereby adjusting the up and down position of the grinding disc 24. This achieves the purpose of automatically grinding the grinding disc 24 by gradually moving it along the length of the fan blade 1. This is used to assist workers in grinding the fan blade 1, saving workers from tedious operation and labor intensity.

[0033] Example 8: Based on Example 1, as follows Figures 1-2 , Figures 7-8 As shown, the clamping mechanism includes a fixed frame 14 and a fixed plate 15 fixedly connected to the right support leg 2. A rotating sleeve 41 is rotatably provided on the fixed plate 15. A rotating wheel 40 is fixedly provided on the outside of the right side of the rotating sleeve 41. A through hole is provided inside the rotating sleeve 41. A clamping sleeve 42 is rotatably provided in the through hole. The right end of the clamping sleeve 42 is rotatably connected to an L-shaped support plate 49. The L-shaped support plate 49 is fixedly connected to the fixed plate 15. A clamping hole 47 is provided at the left end of the clamping sleeve 42. The rod part of the fan blade 1 is correspondingly provided in the clamping hole 47. Several clamping rods 43 are evenly distributed in the circumference of the clamping hole 47. Several clamping rods 43 pass through the side end of the clamping hole 47 and contact the guide block 44 accordingly. A number of guide blocks 44 are evenly distributed circumferentially in the through hole. The guide blocks 44 are in contact with a number of clamping rods 43 in a corresponding manner. A sliding sleeve 45 is slidably provided on the clamping sleeve 42. The side end of the sliding sleeve 45 is fixedly connected to the L-shaped positioning rod 46 and the positioning block 35. The positioning block 35 is correspondingly arranged between adjacent positioning segments on the positioning ring 39. A number of positioning segments are evenly distributed circumferentially on the positioning ring 39. The positioning ring 39 is fixedly arranged on the right end of the rotating sleeve 41. The L-shaped positioning rod 46 is correspondingly engaged with a number of positioning holes 48 evenly distributed circumferentially on the right end of the fixing plate 15.

[0034] The working principle of the above technical solution is as follows: After inserting the rod of the fan blade 1 into the clamping hole 47, first pull the L-shaped positioning rod 46. The L-shaped positioning rod 46 drives the sliding sleeve 45 to move. The sliding sleeve 45 causes the positioning block 35 to disengage from the adjacent positioning section on the positioning ring 39. At this time, the L-shaped positioning rod 46 and the positioning hole 48 are in a cooperating state. Control the rotating wheel 40 to rotate. The rotating wheel 40 drives the rotating sleeve 41 to rotate. The rotating sleeve 41 drives the guide block 44 to rotate. After the arc-shaped section of the guide block 44 contacts the clamping rod 43, it pushes the clamping rod 43 to move towards the center of the clamping hole 47. Several clamping rods 4 With a number greater than three, the three-point centering principle is used to clamp and fix the fan blade 1 with several clamping rods 43. The arc-shaped segments of the guide block 44 are distributed left and right, so that the rotating sleeve 41 can push the clamping rods 43 to clamp and fix the fan blade 1 when rotating clockwise or counterclockwise. After clamping and fixing, the L-shaped positioning rod 46 is pressed. The L-shaped positioning rod 46 drives the positioning block 35 to re-engage with the adjacent positioning segment on the positioning ring 39 through the sliding sleeve 45. At this time, the rotating sleeve 41 is in a fixed state and cannot rotate, which ensures the clamping stability of the clamping rods 43 on the fan blade 1. If the angle of the fan blade 1 needs to be adjusted, the L-shaped positioning rod 46 is disengaged from the positioning hole 48. At this time, the positioning block 35 is disengaged from the adjacent positioning section on the positioning ring 39. Then, the rotating wheel 40 is controlled to rotate, which drives the rotating sleeve 41 to rotate. The rotating sleeve 41 pushes the clamping rod 43 through the guide block 44. Due to the limiting effect of the fan blade 1 rod, the clamping rod 43 cannot move. The guide block 44 drives the clamping sleeve 42 to rotate synchronously through the clamping rod 43. The clamping sleeve 42 drives the L-shaped positioning rod 46 to rotate until the fan blade 1 rotates to the target position. The L-shaped positioning rod 46 is then re-engaged with the corresponding positioning hole 48, and the positioning block 35 engages with the adjacent positioning section on the positioning ring 39. During this process, the clamping rod 43 always clamps and fixes the fan blade 1. The fan blade 1 is rotated by driving the clamping rod 43 to rotate. There is no need to disassemble and install the fan blade 1 separately to adjust the angle, which saves time and effort and is simple and convenient to operate.

[0035] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An automatic grinding device for wind turbine blades, characterized in that: The gantry includes a gantry frame, and a position adjustment mechanism is installed at the upper end of the gantry frame to achieve left and right and front and back adjustment. The position adjustment mechanism is connected to a grinding mechanism through an angle adjustment mechanism. The grinding mechanism is used to grind the fan blades (1). A clamping mechanism is installed at the side end of the gantry frame to fix the fan blades (1). A support pad (12) is provided at the lower end of the side of the fan blades (1) away from the clamping mechanism. The angle adjustment mechanism includes a mounting plate (17) fixedly installed at the lower end of the position adjustment mechanism. The lower end of the mounting plate (17) is fixedly connected to a fixed sleeve (18). The fixed sleeve (18) is rotatably connected to a rotating shaft (19). A positioning screw (29) is threadedly connected to the side end of the fixed sleeve (18). The positioning screw (29) is in corresponding contact with the rotating shaft (19). The rotating shaft (19) is fixedly connected to a rotating plate (20). A hinge seat is eccentrically provided at the lower end of the rotating plate (20). The hinge seat is rotatably connected to the movable section of the electric telescopic rod (22). The fixed section of the electric telescopic rod (22) is rotatably connected to the mounting rod (30). The mounting rod (30) is fixedly connected to one side of the upper end of the mounting seat (23). A support seat (28) is fixedly provided at the middle of the upper end of the mounting seat (23). The support seat (28) is rotatably connected to the support block (21) through a support shaft. The support block (21) is fixedly connected to the middle of the lower end of the rotating plate (20). The grinding mechanism includes a motor three (25) fixedly installed on the side of the upper end of the mounting base (23) away from the mounting rod (30). The motor three (25) is fixedly connected to the pulley one (26) through the motor shaft. The pulley one (26) is connected to the pulley two (31) through the conveyor belt (27). The pulley two (31) is fixedly connected to the driving part of the connecting rod (32). The driving part of the connecting rod (32) is rotatably connected to the mounting block (50) at the lower end of the mounting base (23). The mounting part of the connecting rod (32) is correspondingly engaged with the grinding disc (24). The mounting part of the connecting rod (32) is threadedly connected to the locking block (33). The diameter of the driving part of the connecting rod (32) is larger than the diameter of the mounting part of the connecting rod (32). A spring rod (13) is fixedly provided on the upper end of the mounting base (23) near the mounting rod (30). The spring rod (13) is fixedly connected to the sliding plate (37). A connecting block (34) is fixedly provided on the lower end of the sliding plate (37) near the grinding disc (24). A connecting groove is provided in the middle of the lower end of the connecting block (34). A laser rangefinder is installed in the connecting groove. The laser rangefinder is correspondingly set on the upper side of the grinding disc (24). A laser rangefinder (36) is installed on the lower end of the connecting block (34) away from the mounting base (23). The connecting rod (32) and the locking block (33) are provided with alignment holes (38) in the vertical direction. The alignment holes (38) are corresponding to the laser rangefinder (36). The alignment holes (38) allow the laser emitted by the laser rangefinder (36) to pass through. Both the laser rangefinder and the laser rangefinder (36) are electrically connected to the electric telescopic rod (22) through the controller. Both the laser rangefinder and the laser rangefinder (36) are electrically connected to the motor (11) through the controller.

2. The automatic grinding device for wind turbine blades according to claim 1, characterized in that: The gantry includes a top frame (3), and the front and rear parts of the top frame (3) are symmetrically provided with sliding grooves on the side that are close to each other. A leg (2) is provided at the bottom corner of the top frame (3). The position adjustment mechanism includes frame one (8) and frame two (9). The left and right sides of frame one (8) are symmetrically provided with sliding groove two. Two rolling wheels two (16) are provided in the sliding groove two along the front and back direction. Frame two (9) is fixedly provided between the rolling wheels two (16) in the sliding groove two on the left and right sides. The middle part of frame two (9) is threadedly connected to the threaded section of threaded rod two (10). The cylindrical section of threaded rod two (10) passes through the front end of frame one (8) and is fixedly connected to motor two (11). Motor two (11) is fixedly set at the front end of frame one (8). The cylindrical section of threaded rod two (10) is rotatably connected to the front and rear ends of frame one (8). Mounting plate (17) is fixedly installed at the lower end of frame two (9). The upper left and right sides of the frame 1 (8) are symmetrically provided with connecting frames (4), and the front and rear ends of the connecting frames (4) are symmetrically provided with rolling wheels (5). The rolling wheels (5) are set in the sliding groove. The middle part of the connecting frame (4) is threadedly connected to the threaded section of the threaded rod (6). The cylindrical section of the threaded rod (6) passes through the right end of the top frame (3) and is fixedly connected to the motor (7). The cylindrical section of the threaded rod (6) is rotatably connected to the left and right ends of the top frame (3). The motor (7) is fixedly set at the right end of the top frame (3).

3. The automatic grinding device for wind turbine blades according to claim 1, characterized in that: The clamping mechanism includes a fixed plate (15) fixedly connected to the right support leg (2), a rotating sleeve (41) rotatably provided on the fixed plate (15), a rotating wheel (40) fixedly provided on the right side of the rotating sleeve (41), a through hole provided inside the rotating sleeve (41), a clamping sleeve (42) rotatably provided in the through hole, the right end of the clamping sleeve (42) rotatably connected to the L-shaped support plate (49), the L-shaped support plate (49) fixedly connected to the fixed plate (15), a clamping hole (47) provided on the left end of the clamping sleeve (42), a rod part of the fan blade (1) correspondingly provided in the clamping hole (47), a number of clamping rods (43) evenly distributed in the circumference of the clamping hole (47), and the number of clamping rods (43) passing through the side end of the clamping hole (47) and correspondingly contacting the guide block (44); A number of guide blocks (44) are evenly distributed in the circumference of the through hole. The guide blocks (44) are in contact with a number of clamping rods (43) in a corresponding manner. A sliding sleeve (45) is slidably provided on the clamping sleeve (42). The side end of the sliding sleeve (45) is fixedly connected to the L-shaped positioning rod (46) and the positioning block (35). The positioning block (35) is correspondingly set between adjacent positioning segments on the positioning ring (39). The positioning ring (39) is evenly distributed in the circumference of a number of positioning segments. The positioning ring (39) is fixedly set at the right end of the rotating sleeve (41). The L-shaped positioning rod (46) is correspondingly engaged with a number of positioning holes (48) evenly distributed in the circumference of the right end of the fixing plate (15).

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