Wind power blade surface grinding device and grinding method thereof

Abstract

The invention discloses a wind power blade surface polishing device and a polishing method thereof. The wind power blade surface polishing device comprises a base, and a motor is fixed to the top of the base; a telescopic rod is fixed to the bottom of the motor, the bottom of the telescopic rod is connected with a grinding disc through a hook-and-loop fastener, the grinding disc is located on the top of the base, a threaded rod is rotationally connected to the base, a moving block is in threaded connection to the threaded rod, and the bottom of the moving block is slidably clamped to the top of the base; a moving rod is slidably connected to the middle of the moving block, a first spring is connected to the bottom of the moving rod, the bottom of the first spring is connected to the interior of the moving block, and a first pull rope is connected to the outer end of the bottom of the moving rod. According to the surface grinding device for the wind power blade and the grinding method of the surface grinding device, the fixing device is installed, and the moving rod can be extruded through the weight of the wind power blade, so that the moving rod moves to drive the fixing device to clamp the wind power blade, and the clamping efficiency of the wind power blade is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blade surface grinding, and in particular to a wind turbine blade surface grinding device and a grinding method thereof. Background Art

[0002] The surface of wind turbine blades that have been running for a long time is prone to dirt and rust, which will affect the operating efficiency of the wind turbine. The grinding device can effectively remove these dirt and rust and restore the smoothness of the blade surface, which not only helps to improve the aerodynamic performance of the blade, but also reduces air resistance and improves wind energy conversion efficiency.

[0003] When grinding wind turbine blades, the wind turbine blades need to be fixed first, and the fixation requires the use of bolts to stably fix the wind turbine blades on the grinding device, which results in only wind turbine blades of the same size being able to be fixed, which results in poor adaptability.

[0004] In order to solve the above defects, a wind turbine blade surface grinding device with publication number CN220372905U is disclosed, which places the wind turbine blade on a lifting plate, adjusts the position of the elastic pad by adjusting the telescopic rod, thereby adjusting the position of the fixing point, fixes the wind turbine blade to the elastic pad by rotating the handle, drives the slider to move on the guide rail by a first motor, thereby adjusting the grinding position, lowers the grinding layer by a cylinder, and drives the grinding layer to rotate by a second motor, so that the grinding layer grinds the wind turbine blade;

[0005] In actual use of the above device, although the elastic pad is used to fix the wind turbine blade, the handle needs to be turned before the wind turbine blade is fixed, and the handle and the vertical rod are connected by threads, which will take a long time to fix the wind turbine blade, resulting in inconvenience in use;

[0006] In order to solve the above defects, a wind turbine blade grinding and dust removal device with publication number CN217317403U is directly installed on the grinder through a dust removal cover, which basically does not affect the original grinder operation; it is connected to the dust collection device through a dust collection connection pipe, and grinding and dust collection work at the same time during work, which is extremely real-time, effectively reducing the time that dust is exposed to the air, and can absorb more than 90% of the grinding dust, effectively improving the workshop environment and improving the comfort of personnel operation;

[0007] In actual use of the above device, although the dust is absorbed by the dust hood, during the grinding process of the wind turbine blades, the dust generated by the grinding will be scattered everywhere due to the rotation of the grinding disc, which will cause the dust hood to have a poor effect in absorbing dust.

[0008] Therefore, we propose a wind turbine blade surface grinding device and a grinding method thereof to solve the above-mentioned problems. Summary of the invention

[0009] The purpose of the present invention is to provide a wind turbine blade surface grinding device and a grinding method thereof, so as to solve the problem proposed in the above background technology that the handle and the vertical rod in the current market are connected by threads, which will result in a long time being spent on the wind turbine blades, resulting in inconvenience in use, and due to the rotation of the grinding disc, the dust generated by the grinding will float everywhere, which will result in the dust cover having a poor effect in absorbing dust.

[0010] To achieve the above-mentioned object, the present invention provides the following technical solutions: a wind turbine blade surface grinding device and a grinding method thereof, comprising a base, a motor is fixed on the top of the base;

[0011] A telescopic rod is fixed at the bottom of the motor, and a grinding disc is connected to the bottom of the telescopic rod through Velcro, the grinding disc is located at the top of the base, a threaded rod is rotatably connected to the base, a moving block is threadedly connected to the threaded rod, and the bottom of the moving block is slidably engaged with the top of the base;

[0012] The middle part of the shift block is slidably connected to a shift rod, and the bottom of the shift rod is connected to a first spring, and the bottom of the first spring is connected to the inside of the shift block, the outer end of the bottom of the shift rod is connected to a first pull rope, and the first pull rope slides inside the shift block, and the outer end of the first pull rope is connected to the inner wall of the fixer, and the bottom of the fixer slides through the limit rod to form a clamping mechanism.

[0013] Preferably, the clamping mechanism includes a fixer, a limiting rod and a second spring, and both ends of the limiting rod are fixed inside the moving block, and the inner end of the limiting rod is nested with the second spring, the outer end of the second spring is connected to the inner wall of the fixer, and the inner end of the second spring is connected to the inside of the moving block.

[0014] Preferably, a first roller is attached to the bent portion of the first pull rope, and the first roller is connected to the inside of the shifting block via a bearing.

[0015] Preferably, a clamping block is slidably connected inside the fixer, and the inner end of the bottom of the clamping block is arc-shaped, and the bottom of the clamping block extends into the inside of the clamping slot to form a clamping mechanism, and the clamping slots are arranged on the shifting block at equal intervals.

[0016] Preferably, a third spring is connected to the top of the clamping block, and a top of the third spring is connected to the inside of the fixer, and a second pull rope runs through the third spring.

[0017] Preferably, the bottom of the second pull rope is connected to the top of the block, and the top of the second pull rope extends out of the interior of the fixture through the second roller to form a sliding mechanism, and the second roller is connected to the interior of the fixture through a bearing.

[0018] Preferably, the bottom key of the motor is connected to a first gear, and the outer end of the first gear is meshed with a second gear, and the tooth block on the first gear is half set and the other half is set as a smooth surface.

[0019] Preferably, the middle key of the second gear is connected to the middle of the driven rod, and the top of the driven rod is rotatably connected to the base, and the top of the driven rod is nested with a fourth spring, and the top of the fourth spring is connected to the base.

[0020] Preferably, the bottom of the driven rod is connected to the inner wall of the vacuum cleaner through a winding roller, and the top of the vacuum cleaner is rotatably connected to the base, and a fifth spring is connected to the connection between the vacuum cleaner and the base, the outer end of the fifth spring is connected to the base, and the inner end of the fifth spring is connected to the outer wall of the vacuum cleaner.

[0021] Preferably, the method comprises the following steps:

[0022] S1: placing the wind turbine blades on the shifting block so that the weight of the wind turbine blades will squeeze the shifting rod to move;

[0023] S2: The moving rod moves to drive the fixing device to clamp the wind turbine blade through the first pull rope;

[0024] S3: The fixing device moves into position, causing the third spring to push the card block into the card slot, thereby fixing the fixing device;

[0025] S4: The grinding disc is driven to rotate by a motor so that the grinding disc can grind the wind turbine blade;

[0026] S5: The motor drives the second gear to rotate through the first gear, so that the rotation of the second gear drives the vacuum cleaner to rotate, so that the vacuum cleaner swings to absorb dust generated by grinding.

[0027] Compared with the prior art, the beneficial effects of the present invention are: the wind turbine blade surface grinding device and the grinding method thereof can be conveniently fixed and can improve the dust removal effect and have strong stability. By moving the fixer, the fixer can quickly fix wind turbine blades of different sizes, thereby improving the processing efficiency. By rotating the vacuum cleaner, the dust removal range of the vacuum cleaner can be increased, thereby improving the dust removal effect. By using the clamping block, the stability of the fixer clamping the wind turbine blade is improved. The specific contents are as follows:

[0028] (1) A fixer is provided, and the weight of the wind turbine blade will squeeze the shift rod, so that the movement of the shift rod will drive the fixer to clamp the wind turbine blade, thereby improving the efficiency of clamping the wind turbine blade;

[0029] (2) A vacuum cleaner is provided, and the first gear is driven to rotate by the motor, so that the rotation of the first gear can drive the vacuum cleaner to swing, so that the swing of the vacuum cleaner can increase the dust removal range, thereby improving the dust removal effect;

[0030] (3) A clamping block is provided, and the clamping block is engaged with the clamping slot, so that the fixer can stably clamp the wind turbine blade, thereby preventing the wind turbine blade from sliding during grinding, thereby improving stability;

[0031] (4) A first roller is provided, and the first roller is attached to the bending part of the first pull rope, and the first roller is connected to the inside of the shift block through a bearing, so that the first roller can reduce the friction loss of the first pull rope, thereby increasing the service life of the first pull rope;

[0032] (5) A fifth spring is provided, which is connected to the inner wall of the vacuum cleaner through the bottom of the driven rod via a winding roller, and the top of the vacuum cleaner is rotatably connected to the base, and a fifth spring is connected to the connection between the vacuum cleaner and the base, the outer end of the fifth spring is connected to the base, and the inner end of the fifth spring is connected to the outer wall of the vacuum cleaner, so that the fifth spring can drive the vacuum cleaner to reset, thereby facilitating the reciprocating swing of the vacuum cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the connection structure between the base and the motor of the present invention;

[0034] Figure 2 This is a schematic diagram of the connection structure between the telescopic rod and the grinding disc of the present invention;

[0035] Figure 3 This is a schematic diagram of the connection structure between the shift block and the shift rod of the present invention;

[0036] Figure 4 This is a schematic diagram of the connection structure between the threaded rod and the shift block of the present invention;

[0037] Figure 5 It is a schematic diagram of the connection structure between the knot shift rod and the first spring of the present invention;

[0038] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0039] Figure 7 This is a schematic diagram of the connection structure between the card block and the card slot of the present invention;

[0040] Figure 8 This is a schematic diagram of the connection structure between the first gear and the second gear of the present invention;

[0041] Fig. 9 It is a schematic diagram of the connection structure between the vacuum cleaner and the base of the present invention;

[0042] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at B in the middle.

[0043] In the figure: 1. base; 2. motor; 3. telescopic rod; 4. grinding disc; 5. threaded rod; 6. shift block; 7. shift rod; 8. first spring; 9. first pull rope; 10. fixer; 11. first roller; 12. limit rod; 13. second spring; 14. block; 15. slot; 16. third spring; 17. second pull rope; 18. second roller; 19. first gear; 20. second gear; 21. driven rod; 22. fourth spring; 23. winding roller; 24. vacuum cleaner; 25. fifth spring. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1: A wind turbine blade surface grinding device and a grinding method thereof solve the problem that the existing handle and the vertical rod are connected by threads, which will lead to a long time for the wind turbine blade, resulting in inconvenience in use. The use of the fixture 10 can quickly clamp wind turbine blades of different sizes, thereby improving the processing efficiency. The invention discloses:

[0046] A motor 2 is fixed to the top of the base 1; a telescopic rod 3 is fixed to the bottom of the motor 2, and the bottom of the telescopic rod 3 is connected to a grinding disc 4 through Velcro, and the grinding disc 4 is located at the top of the base 1, and a threaded rod 5 is rotatably connected to the base 1, and a moving block 6 is threadedly connected to the threaded rod 5, and the bottom of the moving block 6 is slidably engaged with the top of the base 1; a moving rod 7 is slidably connected to the middle part of the moving block 6, and the bottom of the moving rod 7 is connected to a first spring 8, and the bottom of the first spring 8 is connected to the inside of the moving block 6, and the outer end of the bottom of the moving rod 7 is connected to a first pull rope 9, and the first pull rope 9 slides inside the moving block 6, and the outer end of the first pull rope 9 is connected to the inner wall of the fixer 10, and the bottom of the fixer 10 penetrates and slides on the limit rod 12 to form a clamping mechanism, and the clamping mechanism includes the fixer 10, the limit rod 12 and the second spring 13, and the two ends of the limit rod 12 are fixed inside the moving block 6, and the inner end of the limit rod 12 is nested with the second spring 1 3. The outer end of the second spring 13 is connected to the inner wall of the fixer 10, and the inner end of the second spring 13 is connected to the inside of the moving block 6. The first roller 11 is fitted at the bending part of the first pull rope 9, and the first roller 11 is connected to the inside of the moving block 6 through a bearing. The inside of the fixer 10 is slidably connected with a clamping block 14, and the inner end of the bottom of the clamping block 14 is arranged in an arc shape, and the bottom of the clamping block 14 extends into the inside of the clamping groove 15 to form a clamping mechanism, and the clamping grooves 15 are arranged on the moving block 6 at equal intervals. The top of the clamping block 14 is connected to the third spring 16, and the top of the third spring 16 is connected to the inside of the fixer 10, and a second pull rope 17 runs through the third spring 16, the bottom of the second pull rope 17 is connected to the top of the clamping block 14, and the top of the second pull rope 17 extends out of the inside of the fixer 10 through the second roller 18 to form a sliding mechanism, and the second roller 18 is connected to the inside of the fixer 10 through a bearing;

[0047] refer to Figures 1 to 6When grinding the wind turbine blade, the threaded rod 5 is rotated, and the rotation of the threaded rod 5 drives the shift block 6 to move, so that the shift block 6 can drive the wind turbine blade to adjust the position according to different needs, and the wind turbine blade is placed on the shift block 6, and then the weight of the wind turbine blade squeezes the shift rod 7, and then the shift rod 7 moves toward the inside of the shift block 6, and the movement of the shift rod 7 squeezes the first spring 8, so that the first spring 8 is compressed, and the movement of the shift rod 7 drives the first pull rope 9 to move, so that the movement of the first pull rope 9 drives the fixer 10 to move through the first roller 11, so that the fixer 10 can slide on the limit rod 12, and then the movement of the fixer 10 clamps the wind turbine blade, and the movement of the fixer 10 squeezes the second spring 1 3, so that the second spring 13 is compressed by force, and then the wind turbine blade can be fixed, and then the grinding disc 4 is driven to rotate by the motor 2 through the telescopic rod 3, and the telescopic rod 3 drives the grinding disc 4 to rise and fall, so that the grinding disc 4 can grind the surface of the wind turbine blade. After the grinding is completed, the wind turbine blade is taken out, so that the wind turbine blade is separated from the squeezing of the shift rod 7, so that the first spring 8 will push the shift rod 7 to reset, so that the shift rod 7 is reset by pulling the first pull rope 9, so that the first pull rope 9 becomes loose, and then the force of the second spring 13 will push the fixer 10 to reset, so that the fixer 10 can be separated from the clamping of the wind turbine blade, so that the fixer 10 can clamp the next group of wind turbine blades, thereby improving the efficiency of grinding the wind turbine blade; refer to Figures 3 to 7 The movement of the fixture 10 drives the block 14 to move, and then the block 14 moves to squeeze between the slot 15, so that the block 14 is squeezed to slide into the inside of the fixture 10, and the block 14 moves to break away from the engagement with the slot 15, and then the block 14 moves to squeeze the third spring 16, so that the third spring 16 is compressed. After the fixture 10 clamps the wind turbine blade, the force of the third spring 16 pushes the block 14 into the slot 15 for engagement, and then After that, the position of the fixer 10 can be fixed, and the block 14 can automatically extend into the corresponding slot 15 according to the moving range of the fixer 10, so that the fixer 10 can clamp wind turbine blades of different sizes, thereby improving the stability of clamping the wind turbine blades. By pulling the second pull rope 17, the second pull rope 17 moves through the second roller 18 to drive the block 14 to move, so that the block 14 will be disengaged from the slot 15, so that the fixer 10 can be reset.

[0048] Embodiment 2: A wind turbine blade surface grinding device and a grinding method thereof solve the problem that the dust generated by grinding will be scattered everywhere due to the rotation of the grinding disc, which will then cause the dust removal cover to have a poor dust absorption effect. The dust can be absorbed by the swing of the dust collector 24, thereby improving the dust absorption effect. The following is disclosed:

[0049] The bottom key of the motor 2 is connected with the first gear 19, and the outer end of the first gear 19 is meshed with the second gear 20, and the tooth block on the first gear 19 is set in half, and the other half is set as a smooth surface, the middle key of the second gear 20 is connected to the middle part of the driven rod 21, and the top of the driven rod 21 is rotatably connected to the base 1, and the top of the driven rod 21 is nested and connected with a fourth spring 22, and the top of the fourth spring 22 is connected to the base 1, the bottom of the driven rod 21 is connected to the inner wall of the vacuum cleaner 24 through the winding roller 23, and the top of the vacuum cleaner 24 is rotatably connected to the base 1, and the connection between the vacuum cleaner 24 and the base 1 is connected with a fifth spring 25, the outer end of the fifth spring 25 is connected to the base 1, and the inner end of the fifth spring 25 is connected to the outer wall of the vacuum cleaner 24;

[0050] refer to Figures 1 to 3 , Figures 8 to 10 The motor 2 can drive the first gear 19 to rotate, and then the rotation of the first gear 19 will drive the second gear 20 to rotate, and then the rotation of the second gear 20 will drive the driven rod 21 to rotate, and the rotation of the driven rod 21 will squeeze the fourth spring 22, so that the fourth spring 22 is compressed and stressed, and the rotation of the driven rod 21 will drive the winding roller 23 to rotate, and then the rotation of the winding roller 23 will drive the vacuum cleaner 24 to rotate on the base 1, and the rotation of the vacuum cleaner 24 will squeeze the fifth spring 25, so that The fifth spring 25 is compressed by the force, and after the first gear 19 disengages from the second gear 20, the fourth spring 22 can drive the driven rod 21 to reverse, so that the driven rod 21 can drive the winding roller 23 to disengage from the pulling of the vacuum cleaner 24, and then the fifth spring 25 can drive the vacuum cleaner 24 to reverse, and so on, and then the vacuum cleaner 24 can swing back and forth on the base 1, and then the swinging vacuum cleaner 24 can absorb dust, thereby increasing the dust removal range.

[0051] Embodiment 3: The present invention provides a technical solution, a wind turbine blade surface grinding device and a grinding method thereof, comprising the following steps, disclosed:

[0052] S1: placing the wind turbine blade on the shift block 6 so that the weight of the wind turbine blade will squeeze the shift rod 7 to move;

[0053] S2: The moving rod 7 moves through the first pull rope 9 to drive the fixing device 10 to clamp the wind turbine blade;

[0054] S3: The fixing device 10 moves into position, allowing the third spring 16 to push the block 14 into the slot 15, thereby fixing the fixing device 10;

[0055] S4: driving the grinding disc 4 to rotate by the motor 2 so that the grinding disc 4 can grind the wind turbine blade;

[0056] S5: The motor 2 drives the second gear 20 to rotate through the first gear 19, so that the rotation of the second gear 20 drives the vacuum cleaner 24 to rotate, so that the vacuum cleaner 24 swings to absorb the dust generated by grinding.

[0057] Working principle of this embodiment: When using the wind turbine blade surface grinding device and grinding method, first, refer to Figures 1 to 6 When the wind turbine blade is being polished, the threaded rod 5 is rotated, and then the threaded rod 5 is rotated to drive the moving block 6 to move, and the wind turbine blade is placed on the moving block 6, and then the weight of the wind turbine blade will squeeze the moving rod 7, and then the moving rod 7 will move toward the inside of the moving block 6, and the movement of the moving rod 7 will drive the first pull rope 9 to move, and then the movement of the fixer 10 will clamp the wind turbine blade, and the movement of the fixer 10 will squeeze the second spring 13, and then the motor 2 drives the grinding disc 4 to rotate through the telescopic rod 3, and the telescopic rod 3 drives the grinding disc 4 to rise and fall, after the polishing is completed, the wind turbine blade is taken out, so that the wind turbine blade is separated from the squeezing of the moving rod 7, so that the first spring 8 will push the moving rod 7 to reset, and then the force of the second spring 13 will push the fixer 10 to reset, so that the fixer 10 can clamp the next group of wind turbine blades, thereby improving the efficiency of polishing the wind turbine blades;

[0058] refer to Figures 3 to 7 The movement of the fixture 10 drives the block 14 to move, and then the block 14 moves to squeeze between the slot 15. After the fixture 10 clamps the wind turbine blade, the position of the fixture 10 can be fixed, and the block 14 can automatically extend into the corresponding slot 15 according to the range of movement of the fixture 10, so that the fixture 10 can clamp wind turbine blades of different sizes, thereby improving the stability of the wind turbine blade clamping. By pulling the second pull rope 17, the second pull rope 17 moves through the second roller 18 to drive the block 14 to move, so that the block 14 will be out of the engagement with the slot 15, so that the fixture 10 can be reset;

[0059] refer to Figures 1 to 3 , Figures 8 to 10The motor 2 can drive the first gear 19 to rotate, and then the rotation of the first gear 19 will drive the second gear 20 to rotate, and then the rotation of the second gear 20 will drive the driven rod 21 to rotate, and then the rotation of the winding roller 23 will drive the vacuum cleaner 24 to rotate on the base 1, and the rotation of the vacuum cleaner 24 will squeeze the fifth spring 25. After the first gear 19 is disengaged from the second gear 20, the fourth spring 22 can drive the driven rod 21 to reverse, and then the fifth spring 25 can drive the vacuum cleaner 24 to reverse, and so on, so that the vacuum cleaner 24 can swing back and forth on the base 1, and then the swinging vacuum cleaner 24 can absorb dust, thereby increasing the range of dust removal.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine blade surface polishing device, comprising a base (1), a motor (2) being fixed on the top of the base (1); It is characterized in that A telescopic rod (3) is fixed to the bottom of the motor (2), and a grinding disc (4) is connected to the bottom of the telescopic rod (3) via Velcro, and the grinding disc (4) is located on the top of the base (1). A threaded rod (5) is rotatably connected to the base (1), and a moving block (6) is threadedly connected to the threaded rod (5), and the bottom of the moving block (6) is slidably engaged with the top of the base (1); The middle part of the shift block (6) is slidably connected to a shift rod (7), and the bottom of the shift rod (7) is connected to a first spring (8), and the bottom of the first spring (8) is connected to the inside of the shift block (6), the outer end of the bottom of the shift rod (7) is connected to a first pull rope (9), and the first pull rope (9) slides inside the shift block (6), and the outer end of the first pull rope (9) is connected to the inner wall of the fixer (10), and the bottom of the fixer (10) passes through and slides on the limit rod (12) to form a clamping mechanism.

2. A wind turbine blade surface grinding device according to claim 1, characterized in that: The clamping mechanism comprises a fixer (10), a limiting rod (12) and a second spring (13), wherein both ends of the limiting rod (12) are fixed inside the shifting block (6), and the second spring (13) is nested in the inner end of the limiting rod (12), the outer end of the second spring (13) is connected to the inner wall of the fixer (10), and the inner end of the second spring (13) is connected to the inside of the shifting block (6).

3. A wind turbine blade surface grinding device according to claim 1, characterized in that: A first roller (11) is fitted at the bent portion of the first pull rope (9), and the first roller (11) is connected to the interior of the shifting block (6) via a bearing.

4. A wind turbine blade surface grinding device according to claim 1, characterized in that: The interior of the fixer (10) is slidably connected with a clamping block (14), and the inner end of the bottom of the clamping block (14) is arranged in an arc shape, and the bottom of the clamping block (14) extends into the interior of the clamping groove (15) to form a clamping mechanism, and the clamping grooves (15) are arranged on the shifting block (6) at equal intervals.

5. A wind turbine blade surface grinding device according to claim 4, characterized in that: The top of the clamping block (14) is connected to a third spring (16), and the top of the third spring (16) is connected to the inside of the fixer (10), and a second pull rope (17) runs through the third spring (16).

6. A wind turbine blade surface grinding device according to claim 5, characterized in that: The bottom of the second pull rope (17) is connected to the top of the block (14), and the top of the second pull rope (17) extends out of the interior of the fixer (10) through the second roller (18) to form a sliding mechanism, and the second roller (18) is connected to the interior of the fixer (10) through a bearing.

7. A wind turbine blade surface grinding device according to claim 1, characterized in that: The bottom key of the motor (2) is connected to a first gear (19), and the outer end of the first gear (19) is meshed with a second gear (20), and the tooth block on the first gear (19) is half-set and the other half is a smooth surface.

8. A wind turbine blade surface grinding device according to claim 7, characterized in that: The middle key of the second gear (20) is connected to the middle of the driven rod (21), and the top of the driven rod (21) is rotatably connected to the base (1), and the top of the driven rod (21) is nested with a fourth spring (22), and the top of the fourth spring (22) is connected to the base (1).

9. A wind turbine blade surface grinding device according to claim 8, characterized in that: The bottom of the driven rod (21) is connected to the inner wall of the vacuum cleaner (24) through a winding roller (23), and the top of the vacuum cleaner (24) is rotatably connected to the base (1), and a fifth spring (25) is connected to the connection between the vacuum cleaner (24) and the base (1), the outer end of the fifth spring (25) is connected to the base (1), and the inner end of the fifth spring (25) is connected to the outer wall of the vacuum cleaner (24).

10. A method for polishing a wind turbine blade surface polishing device as claimed in claim 9, characterized in that: The steps include: S1: placing a wind turbine blade on a shifting block (6) so that the weight of the wind turbine blade will squeeze the shifting rod (7) to move; S2: The shift rod (7) moves through the first pull rope (9) to drive the fixer (10) to clamp the wind turbine blade; S3: The fixing device (10) moves into position, causing the third spring (16) to push the block (14) into the slot (15), thereby fixing the fixing device (10); S4: driving the grinding disc (4) to rotate by means of the motor (2), so that the grinding disc (4) can grind the wind turbine blades; S5: The motor (2) drives the second gear (20) to rotate via the first gear (19), so that the rotation of the second gear (20) drives the vacuum cleaner (24) to rotate, so that the vacuum cleaner (24) swings to absorb dust generated by grinding.

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