Wind driven generator blade cutting device provided with fixing assembly and cutting method

Abstract

The invention discloses a wind driven generator blade cutting device provided with a fixing assembly and a cutting method, and belongs to the technical field of wind driven generator blade machining. The adjusting seat is fixedly installed at the output end of the hydraulic rod, a fixing ring is fixedly installed on the outer side of the adjusting seat, a sliding ring is further installed on the outer side of the adjusting seat in a sliding mode, an elastic film is fixedly installed at the right end of the adjusting seat, and a dust suction pipe is connected to the outer side of the adjusting seat and used for achieving dust suction in the cutting process; and the air blowing part is fixedly installed on the outer side of the cutting machine, a filter screen structure is installed at an air inlet of the air blowing part, and the air blowing part communicates with the air conveying part through a connecting pipe. According to the wind driven generator blade cutting device provided with the fixing assembly, a cutting working area can be automatically sealed, cutting dust is prevented from escaping, meanwhile, cut-off flashes can be automatically cut, the situation that the stress of the connecting position is affected due to the fact that the whole flashes are too heavy is avoided, and the blade structure stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine blade processing, and in particular to a wind turbine blade cutting device and a cutting method provided with a fixing component. Background Art

[0002] Wind turbine blades are an important and indispensable component of wind power generation. The blades can rotate under the action of wind, thereby driving the power generation equipment to generate electricity. The production of wind turbine blades mainly uses materials such as glass fiber, epoxy resin and adhesives, and is manufactured through mold vacuum infusion and bonding, so that there will be certain flash at the root. Therefore, a trimming device is needed to remove the flash at the root of the blade.

[0003] In the prior art, there is a wind turbine blade flash cutting device and a cutting method thereof, such as the publication number CN117087056A, which includes a walking cutting mechanism, a root cleaning mechanism and a connecting rod assembly; the walking cutting mechanism and the root cleaning mechanism both include an opening and closing frame, a cutting machine, a dust collecting component and a moving component for controlling the cutting machine to move up and down and forward and backward; the opening and closing frame of the walking cutting mechanism is provided with a driving wheel, a power structure for driving the driving wheel to rotate and a driven wheel, the driving wheel can fit into the flash groove and cooperate with the driven wheel to clamp the two sides of the bottom of the flash groove; the opening and closing frame of the root cleaning mechanism is provided with a clamping wheel that can clamp the cutting margin left by the blade flash after the walking cutting mechanism is cut when the frame is closed, and the opening and closing frame of the root cleaning mechanism is also provided with a guide wheel that is radially fitted with the blade body; the connecting rod assembly provides the root cleaning mechanism with a force to make the guide wheel close to the blade body. The present invention performs rough cutting and fine cutting at the same time, meets the requirements of the two-knife cutting process, and improves the cutting efficiency.

[0004] However, when it is in use, the cut flash often forms an integral strip, which causes changes in the stress of the blade at the connection of the uncut flash, thus having a certain impact on the stability of the blade after production. At the same time, its entire working area is exposed, causing some dust to escape, thus affecting the production environment, and there are certain defects in use. Summary of the invention

[0005] The object of the present invention is to provide a wind turbine blade cutting device and cutting method provided with a fixing assembly, so as to solve the problem raised in the above background technology that the wind turbine blade cutting device currently on the market is inconvenient to cut the burrs after cutting.

[0006] To achieve the above object, the present invention provides the following technical solution: a wind turbine blade cutting device provided with a fixing assembly, comprising a base fixedly installed above the ground, the wind turbine blade root is supported above the base, and a hydraulic rod is fixedly installed on the outer side of the base; It also includes: an adjustment seat, which is fixedly installed at the output end of the hydraulic rod, a fixed ring is fixedly installed on the outer side of the adjustment seat, and a sliding ring is slidably installed on the outer side of the adjustment seat, and an elastic membrane is fixedly installed on the right end of the adjustment seat to cooperate with the adjustment seat to seal and dustproof the cutting area, and a dust suction pipe is connected to the outer side of the adjustment seat to realize dust suction during the cutting process; A fixed frame is fixedly installed on the inner side of the adjustment seat, a positioning motor is fixedly installed on the inner side of the right end of the fixed frame, and a threaded rod is fixedly installed on the output end of the positioning motor, and an adjustment piece is connected to the outer side of the threaded rod, and a positioning assembly is connected to the outer side of the adjustment piece, and sliding grooves are evenly opened on the fixed frame, and a sliding piece is slidably arranged on the inner side of the fixed frame, and the edge of the sliding piece passes through the sliding groove, and a pressing plate is fixedly connected to the outer side of the sliding piece; The gear ring is rotatably mounted on the outer side of the fixed frame, a cutting machine is fixedly mounted on the outer side of the gear ring, and a third magnetic block is evenly fixedly mounted on the outer side of the gear ring; The shift motor is fixedly installed on the inner side of the base, and a gear is fixedly installed on the output end of the shift motor; The airbag is connected between the adjustment seat and the pressure plate, the left and right ends of the airbag are respectively connected with an air inlet pipe and an exhaust pipe, the outer side of the fixing frame is rotatably connected with an air delivery member, and the exhaust pipe penetrates the outer wall of the fixing frame and communicates with the internal space of the air delivery member; The air blowing member is fixedly installed on the outside of the cutting machine, the air inlet of the air blowing member is installed with a filter structure, and the air blowing member and the air conveying member are connected through a connecting pipe.

[0007] Preferably, a first spring is connected between the fixed ring and the sliding ring, a first magnetic block is fixedly mounted on the outer side of the lower end of the sliding ring, and a second magnetic block is fixedly mounted on the outer side of the sliding ring, and the magnetic poles of the opposing surfaces of the first magnetic block and the second magnetic block are opposite.

[0008] By adopting the above technical solution, when the hydraulic rod drives the adjustment seat to move closer to the base, the first magnetic block and the second magnetic block can be brought closer to each other. When the two are close to each other, the magnetic force generated will cause the sliding ring to slide on the outside of the fixed ring.

[0009] Preferably, a traction rope is evenly and fixedly connected to the outer side of the sliding ring, and one end of the traction rope close to the elastic membrane is fixedly connected to the inner end of the elastic membrane, and the inner end of the elastic membrane is an elastic constriction structure.

[0010] By adopting the above technical solution, when the sliding ring moves close to the elastic membrane, the traction rope will relax the pulling on the inner end of the elastic membrane, so that the inner end of the elastic membrane fits the root of the wind turbine blade under the action of elastic force, thereby achieving automatic sealing of the cutting work area.

[0011] Preferably, the threaded rod and the adjusting member are threadedly connected, and the positioning assembly includes a positioning clamp located outside the threaded rod, and connecting rods are hinged between the positioning clamp and the right end of the fixing frame and the outer wall of the adjusting member. At the same time, the adjusting member is arranged in an arc structure and fits against the inner wall of the blade root.

[0012] By adopting the above technical solution, after the positioning clamp is extended into the inner side of the blade root, the positioning motor is controlled to drive the threaded rod to move the adjusting member, thereby driving multiple positioning clamps to expand outward and clamp the inner wall of the blade root through the connecting rod, thereby realizing a fixed combination of the equipment and the blade root.

[0013] Preferably, the gear ring and the blade root are coaxially arranged, and the gear ring and the gear are meshingly connected, and the cutter on the outer side of the gear ring is attached to the blade root to perform the trimming operation.

[0014] By adopting the above technical solution, the gear can drive the gear ring to rotate synchronously through meshing during the rotation process, so that the gear ring can drive the cutting machine to rotate in a circle, ensuring that the cutting machine can perform circumferential trimming on the root of the blade.

[0015] Preferably, the edge portion of the sliding member and the position of the third magnetic block are arranged correspondingly, and the magnetic poles of the edge portion of the sliding member and the opposite surface of the third magnetic block are the same.

[0016] By adopting the above technical solution, when the gear ring rotates, the third magnetic block on its outer side will intermittently approach the edge of the sliding member, so that the sliding member can slide and adjust under the action of the magnetic forces of the two.

[0017] Preferably, a second spring is connected between the pressure plate and the base, and the airbag is arranged in a ring structure, and a one-way valve structure is arranged on the air inlet pipe and the exhaust pipe connected to the outside of the airbag.

[0018] By adopting the above technical solution, the pressure plate can squeeze the airbag when sliding inside the fixing frame, so that the airbag can be exhausted through the exhaust pipe and inhaled through the air intake pipe when being squeezed and restored.

[0019] Preferably, the blowing member rotates with the blowing member under the drive of the connecting pipe, and the blowing member is arranged in a circular ring structure, and the outer diameter of the blowing member is larger than the outer diameter of the cutting machine blade.

[0020] By adopting the above technical solution, the blowing part can blow air to the entire unsegmented trimming strip after cutting, so that the trimming strip is close to the blade, and automatic cutting is achieved, thereby avoiding the trimming strip produced by cutting being too long and affecting the stress at the blade end.

[0021] A cutting method for a wind turbine blade cutting device provided with a fixing assembly comprises the following steps: S1. Use the lifting equipment to lift the blade, ensure that the root of the blade is erected on the base to achieve support and fixation, then control the hydraulic rod to drive the adjustment seat to move, so that the adjustment seat is close to the root of the blade. As the adjustment seat moves, the first magnetic block and the second magnetic block gradually approach each other. When the two are close, magnetic force will be generated, thereby driving the sliding ring to slide elastically on the outside of the adjustment seat. At this time, the traction rope relaxes the pull on the inner side of the elastic membrane, so that the elastic membrane elastically shrinks and fits the root of the blade, realizing the closure of the cutting work area, and turning on the external dust collection equipment to extract the dust generated in the cutting work area through the dust collection pipe to avoid pollution; S2, start the positioning motor, so that the positioning motor drives the threaded rod to rotate, so that the threaded rod and the adjusting member are threadedly connected, ensuring that the adjusting member moves along the threaded rod. At this time, the adjusting member drives multiple positioning clamps to expand outward through the connecting rod and clamp on the inner wall of the blade root to achieve a fixing effect and ensure coaxiality; S3. Start the cutting machine and control the shift motor to drive the gear to rotate at the same time, so that the gear drives the gear ring to rotate through meshing, and the gear ring drives the cutting machine to rotate around the root of the blade to achieve circumferential trimming of the root of the blade. At the same time, the third magnetic block on the outside of the gear ring will intermittently approach the edge of the sliding member, so that the sliding member drives the pressure plate to adjust on the inner side of the fixed frame under the action of magnetic force, so that the pressure plate can squeeze and stretch the airbag, and then the airbag can discharge the internal air through the exhaust pipe, the air supply part and the connecting pipe, so that the blowing part can blow the entire cut edge that is broken after cutting, so that the entire cut edge is close to the cutting machine blade, and automatic cutting is achieved to avoid the cut edge strip being too long and affecting the stress of the blade root, and the airbag can inhale air through the intake pipe.

[0022] Compared with the prior art, the invention has the following beneficial effects: the wind turbine blade cutting device provided with a fixed component can automatically close the cutting work area to prevent cutting dust from escaping, and can automatically cut the cut flash to prevent the entire flash from being too heavy to affect the stress at the connection, thereby improving the stability of the blade structure. The specific contents are as follows; 1. A base, a sliding ring and an elastic film are provided. The movement of the base can make the first magnetic block and the second magnetic block approach each other, so that the sliding ring slides along the base under the action of magnetic force, reducing the pulling of the traction rope on the inner end of the elastic film, so that the elastic film can automatically shrink and fit closely to the root of the blade, so as to realize the automatic closure of the working area and prevent dust from escaping. At the same time, the dust suction pipe can cooperate with an external dust suction device to extract and clean the dust to avoid affecting the working environment; 2. A threaded rod, an adjusting member and a positioning clamp are provided. When the positioning clamp is extended into the inner side of the blade root, the positioning motor is controlled to drive the threaded rod to rotate, so that the threaded rod drives the adjusting member, and the adjusting member drives the positioning clamp to move and adjust through the connecting rod, thereby making multiple positioning clamps expand outward synchronously, thereby fixing the blade root and ensuring the coaxiality of the equipment and the blade root; 3. A gear ring, a gear and a cutter are provided. By starting the shift motor, the gear is driven to rotate, so that the gear drives the gear ring to rotate synchronously through meshing, so that the cutter on the outer side of the gear ring can perform a circular motion around the root of the blade to achieve circumferential cutting; 4. An air bag and a blowing piece are provided. As the gear ring rotates, the third magnetic block on its outer side will intermittently approach the edge of the sliding piece, so that the sliding piece pushes the pressure plate to move under the action of the magnetic force. When the pressure plate moves back and forth left and right, the air bag will be squeezed and stretched, so that the air bag inhales air through the air intake pipe, and blows air into the blowing piece through the exhaust pipe, the air supply piece and the connecting pipe, so that the blowing piece blows the cut flash strip close to the cutting machine to achieve automatic cutting, thereby avoiding the excessively long flash strip affecting the stress of the cutting point of the blade and improving the structural stability of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the installation structure of the elastic membrane of the present invention; Figure 5 This is a schematic diagram of the installation structure of the cutting machine of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the fixing frame of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing frame of the present invention; Figure 8 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Fig. 9 For the present invention Figure 6 Enlarged structural diagram at B in the middle.

[0024] In the figure: 1. base; 2. hydraulic rod; 3. adjustment seat; 4. fixing ring; 5. sliding ring; 6. first spring; 7. first magnetic block; 8. second magnetic block; 9. elastic membrane; 10. traction rope; 11. fixing frame; 12. positioning motor; 13. threaded rod; 14. adjusting member; 15. connecting rod; 16. positioning clamp; 17. dust suction pipe; 18. gear ring; 19. shift motor; 20. gear; 21. cutting machine; 22. third magnetic block; 23. slide groove; 24. sliding member; 25. pressure plate; 26. air bag; 27. second spring; 28. air inlet pipe; 29. ​​air delivery member; 30. exhaust pipe; 31. blowing member; 32. connecting pipe. DETAILED DESCRIPTION

[0025] 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.

[0026] Example 1: Please refer to Figure 1-Figure 6 and Figure 8 As shown, the existing wind turbine blade cutting device is inconvenient to quickly locate the cutting position and to close the cutting work area for dust removal when in use. In order to solve this technical problem, this embodiment discloses the following technical content: a wind turbine blade cutting device with a fixed component, comprising a base 1 fixedly installed above the ground, and the wind turbine blade root is supported above the base 1, and a hydraulic rod 2 is fixedly installed on the outer side of the base 1; It also includes: an adjustment seat 3, which is fixedly installed at the output end of the hydraulic rod 2, a fixed ring 4 is fixedly installed on the outer side of the adjustment seat 3, and a sliding ring 5 is slidably installed on the outer side of the adjustment seat 3, and an elastic membrane 9 is fixedly installed on the right end of the adjustment seat 3, which is used to cooperate with the adjustment seat 3 to seal and dustproof the cutting area, and a dust suction pipe 17 is connected to the outer side of the adjustment seat 3 to realize dust suction during the cutting process; The fixing frame 11 is fixedly installed on the inner side of the adjusting seat 3, a positioning motor 12 is fixedly installed on the inner side of the right end of the fixing frame 11, and a threaded rod 13 is fixedly installed on the output end of the positioning motor 12, and an adjusting member 14 is connected to the outer side of the threaded rod 13, and a positioning assembly is connected to the outer side of the adjusting member 14, and a sliding groove 23 is evenly opened on the fixing frame 11, and a sliding member 24 is slidably provided on the inner side of the fixing frame 11, and the edge of the sliding member 24 passes through the sliding groove 23, and a pressing plate 25 is fixedly connected to the outer side of the sliding member 24; The gear ring 18 is rotatably mounted on the outer side of the fixed frame 11, a cutting machine 21 is fixedly mounted on the outer side of the gear ring 18, and a third magnetic block 22 is evenly fixedly mounted on the outer side of the gear ring 18; The shift motor 19 is fixedly mounted on the inner side of the base 1 , and a gear 20 is fixedly mounted on the output end of the shift motor 19 ; A first spring 6 is connected between the fixed ring 4 and the sliding ring 5, and a first magnetic block 7 is fixedly installed on the outer side of the lower end of the sliding ring 5, and a second magnetic block 8 is fixedly installed on the outer side of the sliding ring 5, and the magnetic poles of the opposite surfaces of the first magnetic block 7 and the second magnetic block 8 are opposite.

[0027] The outer side of the sliding ring 5 is evenly and fixedly connected with a traction rope 10, and one end of the traction rope 10 close to the elastic membrane 9 is fixedly connected to the inner end of the elastic membrane 9, and the inner end of the elastic membrane 9 is an elastic constriction structure.

[0028] The threaded rod 13 and the adjusting member 14 are threadedly connected, and the positioning assembly includes a positioning clamp 16 located outside the threaded rod 13, and a connecting rod 15 is hinged between the positioning clamp 16 and the right end of the fixing frame 11 and the outer wall of the adjusting member 14. At the same time, the adjusting member 14 is arranged in an arc structure and fits the inner wall of the blade root.

[0029] The gear ring 18 and the blade root are coaxially arranged, and the gear ring 18 and the gear 20 are meshingly connected, and the cutter 21 on the outer side of the gear ring 18 is attached to the blade root to perform the trimming operation.

[0030] Through the above technical solution, the blade is hoisted to the top of the base 1 by the hoisting equipment, so that the root of the blade is erected on the base 1 to achieve support and fixation, and then the cutting machine 21 is started, and the hydraulic rod 2 is controlled to drive the adjustment seat 3 close to the root of the blade. At the same time, the elastic membrane 9 will be sleeved on the outside of the root of the blade. At this time, the second magnetic block 8 on the outside of the sliding ring 5 will gradually approach the first magnetic block 7, so that the second magnetic block 8 drives the sliding ring 5 to slide along the outside of the adjusting seat 3 under the action of magnetic force, so that the sliding ring 5 relaxes the traction of the traction rope 10, so that the end of the elastic membrane 9 close to the root of the blade is elastically contracted, thereby fitting to the outside of the root of the blade, and then The cutting work area is closed in conjunction with the adjustment seat 3 to prevent dust from overflowing during the cutting process, and the external dust suction equipment can absorb and clean the dust generated by the cutting through the dust suction tube 17. The positioning motor 12 is subsequently controlled to drive the threaded rod 13 to rotate, so that the threaded rod 13 is threadedly connected to the adjustment member 14, thereby driving the adjustment member 14 to move, so that the adjustment member 14 drives multiple positioning clamps 16 to expand outward through the connecting rod 15 connected to the outside, so that the positioning clamp 16 fits the inner wall of the blade root, thereby fixing the blade root, thereby ensuring that the movement trajectory of the cutting machine 21 is coaxial with the blade root.

[0031] Embodiment 2: The technical content disclosed in this embodiment is a further improvement made on the basis of the above-mentioned embodiment 1. The existing wind turbine blade cutting device is inconvenient to cut the flash after cutting, which causes the stress change at the flash connection. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 6-Figure 9 As shown; The airbag 26 is connected between the adjustment seat 3 and the pressure plate 25. The left and right ends of the airbag 26 are respectively connected to the air inlet pipe 28 and the exhaust pipe 30. The outer side of the fixing frame 11 is rotatably connected to the air delivery member 29, and the exhaust pipe 30 penetrates the outer wall of the fixing frame 11 and communicates with the inner space of the air delivery member 29. The blowing member 31 is fixedly mounted on the outside of the cutting machine 21, the air inlet of the blowing member 31 is equipped with a filter structure, and the blowing member 31 and the air delivery member 29 are connected through a connecting pipe 32; The edge portion of the sliding member 24 and the third magnetic block 22 are disposed at positions corresponding to each other, and the magnetic poles of the edge portion of the sliding member 24 and the opposite surfaces of the third magnetic block 22 are the same.

[0032] A second spring 27 is connected between the pressure plate 25 and the base 1 , and the airbag 26 is arranged in an annular structure, and a one-way valve structure is arranged on the air intake pipe 28 and the exhaust pipe 30 connected to the outside of the airbag 26 .

[0033] The blowing member 31 rotates along with the blowing member 31 under the drive of the connecting pipe 32 , and the blowing member 31 is arranged in a circular ring structure, and the outer diameter of the blowing member 31 is larger than the outer diameter of the blade of the cutting machine 21 .

[0034] By using the above technical solution, the shift motor 19 is started, so that the gear 20 at the output end of the shift motor 19 is meshed with the gear ring 18, so that the gear ring 18 rotates. At this time, the gear ring 18 drives the cutter 21 fixed on its outside to rotate around the root of the blade, so as to achieve annular cutting of the flash edge of the root of the blade. As the gear ring 18 rotates, the third magnetic block 22 on the outside of the gear ring 18 can intermittently approach the magnetic outer end of the sliding member 24, so that the sliding member 24 slides along the slide groove 23 under the action of the magnetic force, and the sliding member 24 drives the pressing plate 25 to move synchronously. At this time, the pressure plate 25 will squeeze and stretch the airbag 26, so that the airbag 26 will inhale air through the air inlet pipe 28, and transport the gas to the air delivery member 29 through the exhaust pipe 30, and the air delivery member 29 will transport the gas to the blowing member 31 through the connecting pipe 32, so that the blowing member 31 blows the cut burrs, so that the suspended unbroken burrs are close to the cutting machine 21, and the burrs are cut, so as to avoid the excessively long suspended burrs affecting the stress at the connection between the blade and the burrs, and the air delivery member 29 will rotate synchronously driven by the blowing member 31 and the connecting pipe 32 to ensure the normal transportation of the gas.

[0035] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0036] 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 cutting device provided with a fixing assembly, comprising a base (1) fixedly mounted above the ground, wherein the base (1) supports the root of a wind turbine blade, and a hydraulic rod (2) is fixedly mounted on the outer side of the base (1); It is characterized in that Also includes: An adjusting seat (3) is fixedly mounted on the output end of the hydraulic rod (2); a fixing ring (4) is fixedly mounted on the outer side of the adjusting seat (3); a sliding ring (5) is also slidably mounted on the outer side of the adjusting seat (3); an elastic membrane (9) is fixedly mounted on the right end of the adjusting seat (3) for cooperating with the adjusting seat (3) to seal and dustproof the cutting area; a dust suction pipe (17) is connected to the outer side of the adjusting seat (3) for dust suction during the cutting process; A fixed frame (11) is fixedly mounted on the inner side of the adjustment seat (3); a positioning motor (12) is fixedly mounted on the inner side of the right end of the fixed frame (11); a threaded rod (13) is fixedly mounted on the output end of the positioning motor (12); an adjusting member (14) is connected to the outer side of the threaded rod (13); and a positioning assembly is connected to the outer side of the adjusting member (14); sliding grooves (23) are evenly arranged on the fixed frame (11); a sliding member (24) is slidably arranged on the inner side of the fixed frame (11); and an edge portion of the sliding member (24) passes through the sliding groove (23); and a pressing plate (25) is fixedly connected to the outer side of the sliding member (24); A gear ring (18) is rotatably mounted on the outside of the fixed frame (11), a cutting machine (21) is fixedly mounted on the outside of the gear ring (18), and a third magnetic block (22) is evenly fixedly mounted on the outside of the gear ring (18); A shift motor (19) is fixedly mounted on the inner side of the base (1), and a gear (20) is fixedly mounted on the output end of the shift motor (19); The air bag (26) is connected between the adjustment seat (3) and the pressure plate (25), and the left and right ends of the air bag (26) are respectively connected to an air inlet pipe (28) and an exhaust pipe (30), and the outer side of the fixing frame (11) is rotatably connected to an air delivery member (29), and the exhaust pipe (30) penetrates the outer wall of the fixing frame (11) and communicates with the internal space of the air delivery member (29); The air blowing member (31) is fixedly mounted on the outside of the cutting machine (21); a filter structure is installed at the air inlet of the air blowing member (31); and the air blowing member (31) and the air delivery member (29) are connected via a connecting pipe (32).

2. A wind turbine blade cutting device provided with a fixing assembly according to claim 1, Features: A first spring (6) is connected between the fixed ring (4) and the sliding ring (5), a first magnetic block (7) is fixedly mounted on the outer side of the lower end of the sliding ring (5), and a second magnetic block (8) is fixedly mounted on the outer side of the sliding ring (5), and the magnetic poles of the opposing surfaces of the first magnetic block (7) and the second magnetic block (8) are opposite.

3. A wind turbine blade cutting device provided with a fixing assembly according to claim 2, Features: A traction rope (10) is evenly and fixedly connected to the outer side of the sliding ring (5), and one end of the traction rope (10) close to the elastic membrane (9) is fixedly connected to the inner end of the elastic membrane (9), and the inner end of the elastic membrane (9) is an elastic constriction structure.

4. A wind turbine blade cutting device provided with a fixing assembly according to claim 1, Features: The threaded rod (13) and the adjusting member (14) are threadedly connected, and the positioning assembly includes a positioning clamp (16) located outside the threaded rod (13), and a connecting rod (15) is hinged between the positioning clamp (16) and the right end of the fixing frame (11) and the outer wall of the adjusting member (14), and the adjusting member (14) is arranged in an arc-shaped structure and fits against the inner wall of the blade root.

5. A wind turbine blade cutting device provided with a fixing assembly according to claim 1, Features: The gear ring (18) and the blade root are coaxially arranged, the gear ring (18) and the gear (20) are meshed and connected, and the cutter (21) on the outer side of the gear ring (18) is attached to the blade root to perform a trimming operation.

6. A wind turbine blade cutting device provided with a fixing assembly according to claim 1, Features: The edge portion of the sliding member (24) and the position of the third magnetic block (22) are arranged correspondingly, and the magnetic poles of the edge portion of the sliding member (24) and the opposing surfaces of the third magnetic block (22) are the same.

7. A wind turbine blade cutting device and cutting method provided with a fixing assembly according to claim 1, Features: A second spring (27) is connected between the pressure plate (25) and the base (1), the airbag (26) is arranged in a ring structure, and a one-way valve structure is arranged on the air intake pipe (28) and the exhaust pipe (30) connected to the outside of the airbag (26).

8. A wind turbine blade cutting device provided with a fixing assembly according to claim 1, Features: The blowing piece (31) rotates along with the blowing piece (31) under the drive of the connecting pipe (32), and the blowing piece (31) is arranged in a circular ring structure, and the outer diameter of the blowing piece (31) is larger than the outer diameter of the blade of the cutting machine (21).

9. A cutting method for a wind turbine blade cutting device provided with a fixing assembly, It is characterized in that The following steps are involved: S1. Use a lifting device to lift the blade, ensure that the root of the blade is mounted on the base (1) to achieve support and fixation, then control the hydraulic rod (2) to drive the adjustment seat (3) to move, so that the adjustment seat (3) is close to the root of the blade. As the adjustment seat (3) moves, the first magnetic block (7) and the second magnetic block (8) gradually approach each other. When the two are close, a magnetic force is generated, thereby driving the sliding ring (5) to slide elastically on the outside of the adjustment seat (3). At this time, the traction rope (10) relaxes the pull on the inner side of the elastic membrane (9), so that the elastic membrane (9) elastically shrinks and fits the root of the blade, thereby achieving the closure of the cutting work area, and turning on the external dust collection device to extract dust generated in the cutting work area through the dust collection pipe (17) to avoid pollution; S2, starting the positioning motor (12), so that the positioning motor (12) drives the threaded rod (13) to rotate, so that the threaded rod (13) and the adjusting member (14) are threadedly connected, ensuring that the adjusting member (14) moves along the threaded rod (13), and at this time, the adjusting member (14) drives the plurality of positioning clamps (16) to expand outwards and clamp on the inner wall of the blade root through the connecting rod (15), thereby achieving a fixing effect and ensuring coaxiality; S3, starting the cutting machine (21), and controlling the shift motor (19) to drive the gear (20) to rotate, so that the gear (20) drives the gear ring (18) to rotate through meshing, so that the gear ring (18) drives the cutting machine (21) to rotate around the root of the blade, thereby achieving circumferential cutting of the root of the blade. At the same time, the third magnetic block (22) on the outer side of the gear ring (18) The edge of the sliding member (24) is intermittently approached, so that the sliding member (24) drives the pressing plate (25) to adjust on the inner side of the fixing frame (11) under the action of magnetic force, so that the pressing plate (25) can squeeze and stretch the airbag (26), and then the airbag (26) can exhaust the internal air through the exhaust pipe (30), the air delivery member (29) and the connecting pipe (32), so that the blowing member (31) can blow the entire cut edge after cutting, so that the entire cut edge is close to the blade of the cutting machine (21), and automatic cutting is achieved, so as to avoid the cut edge strip being too long and affecting the stress of the blade root, and the airbag (26) can inhale air through the air intake pipe (28).

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