A wind turbine blade edging system

Abstract

A kind of wind blade trimming system, including AGV fork truck, AGV fork truck lifting arm is equipped with fixing frame;It further includes edge cutting mechanism and polishing mechanism, and one side of fixing frame is equipped with edge cutting mechanism, and the other side is equipped with polishing mechanism;Edge cutting mechanism is hung by steel cable with fixing frame correspondingly, and weighing sensor and angle detection device are arranged between steel cable and fixing frame;The edge cutting mechanism includes upper support, lower support and cutting machine I, and one side of upper support and lower support is hingedly connected by connecting rod correspondingly;The edge cutting mechanism and polishing mechanism are driven forward along the set trajectory by AGV fork truck, the waste edge generated in the production process of wind blade is automatically cut off by edge cutting mechanism, and the residual edge generated after the waste edge of wind blade is cut off can be automatically adapted by polishing mechanism, to realize automatic polishing, greatly reduce the labor intensity of operator, and effectively protect the physical and mental health of operator.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade manufacturing technology, and in particular to a wind turbine blade trimming system. Background Technology

[0002] As is well known, wind turbine blades are large in size, and their edges are complex spatial curves. During the production of wind turbine blades, excess waste edges are generated at the edges, which need to be removed before proceeding to the next process. Currently, the waste edges are mostly removed manually by operators holding hand-held cutting machines. After the waste edges are removed, some residual edges remain, which need to be smoothed by operators holding hand-held grinders. This results in high labor intensity for operators, and the cutting operation generates a lot of dust, which has a significant impact on the physical and mental health of operators. Because the waste edges are complex spatial curves, existing cutting and grinding equipment cannot achieve automated edge trimming. The above-mentioned shortcomings are problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention discloses a wind turbine blade trimming system.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] A wind turbine blade trimming system includes an AGV forklift, the AGV forklift lifting arm of which is equipped with a fixed frame; it also includes an edge trimming mechanism and a grinding mechanism, with the edge trimming mechanism on one side of the fixed frame and the grinding mechanism on the other side.

[0006] The trimming mechanism is connected to the fixed frame via steel cables, and a weighing sensor and an angle detection device are provided between the steel cables and the fixed frame. The trimming mechanism includes an upper support, a lower support, and a cutting machine I. The upper support and the lower support are hinged on one side via connecting rods, and the two ends of the connecting rods are fixedly connected to the upper support. There is a gap between the upper support and the lower support to allow waste material to pass through.

[0007] A swing arm is fastened to the connecting rod body. A telescopic cylinder I is provided at the bottom of the lower support, which engages the upper and lower supports by pushing the swing arm. Multiple rollers are spaced apart at the ends of the upper and lower supports away from the connecting rod. Among them, the rollers on the upper support are the drive wheels, and a drive motor for driving the corresponding rollers is provided inside the upper support. A cutting machine I is provided on one side of the upper support corresponding to the rollers. The middle part of the housing of the cutting machine I is rotatably connected to the upper support. A telescopic cylinder II for controlling the lifting and lowering of the cutting head of the cutting machine I is provided on one side of the upper support corresponding to the cutting machine I.

[0008] The grinding mechanism includes a connecting seat, a buffer cylinder, a mounting seat, and a grinding machine; one side of the connecting seat is rotatably connected to the fixed frame, the axis of rotation of the connecting seat is horizontal, and the other side of the connecting seat is provided with a buffer cylinder, the telescopic end of which is rotatably connected to the mounting seat, and the axis of rotation of the mounting seat is vertical; the top of the mounting seat is provided with a grinding machine, and the mounting seat is provided with guide wheels I on both the left and right sides corresponding to the grinding head of the grinding machine.

[0009] Preferably, the fixed frame is provided with a cutting mechanism on one side corresponding to the trimming mechanism. The cutting mechanism includes a connecting rod with one end fastened to the fixed frame, and a cutting machine II is provided at the other end of the connecting rod. The middle part of the housing of the cutting machine II is rotatably connected to the connecting rod, and a telescopic cylinder III for controlling the lifting and lowering of the cutting head of the cutting machine II is provided between the tail of the housing of the cutting machine II and the connecting rod.

[0010] Preferably, the lower support is provided with a dust collection box I below the cutting head of cutting machine I; the connecting rod is provided with a dust collection box II below the cutting head of cutting machine II.

[0011] Preferably, the mounting bracket is equipped with a vacuum cleaner, which is connected to dust collection box I and dust collection box II via suction pipes.

[0012] Preferably, the dust collection box II has a baffle at the end opposite to the fixing frame.

[0013] Preferably, the angle detection device includes two hinge plates, one end of which is hinged to each other via hinge shaft I. One hinge plate is hinged to a fixed frame via hinge shaft II, and hinge shaft I is fastened to the hinge plate. Hinge shaft II is fastened to the fixed frame. The axis of hinge shaft I is perpendicular to the axis of hinge shaft II. An angle encoder is provided at one end of both hinge shaft I and hinge shaft II. The other hinge plate is connected to a steel cable via a weighing sensor.

[0014] Preferably, the connecting seat is connected to the fixed frame via a balancing mechanism. The balancing mechanism includes a connecting arm, a balancing arm, and a counterweight. One end of the connecting arm is fastened to the fixed frame, and the other end of the connecting arm is provided with a balancing arm. The middle part of the balancing arm is rotatably connected to the connecting arm. The connecting seat is rotatably connected to one end of the balancing arm, and the other end of the balancing arm is provided with a counterweight for balancing the weight of the grinding mechanism.

[0015] Preferably, the guide wheel I and the mounting base are slidably engaged by a horizontal slide rail, and a lead screw is rotatably connected to one end of the guide wheel I corresponding to the connecting base, and the lead screw is threadedly connected to the mounting base.

[0016] Preferably, the connecting seat is provided with a guide sleeve below the corresponding buffer cylinder, and a guide post with one end fastened to the mounting seat is slidably inserted.

[0017] Preferably, the mounting base is provided with multiple guide wheels II at intervals on both the upper and lower sides of the grinding head of the grinding machine.

[0018] By employing the technical solution described above, the present invention has the following beneficial effects:

[0019] This invention discloses a wind turbine blade trimming system with a high degree of automation, effectively reducing the labor intensity of operators. The trimming mechanism automatically cuts off the waste edges generated during the wind turbine blade production process. The trimming mechanism is connected to a fixed frame via steel cables, and a weighing sensor and an angle detection device are installed between the steel cables and the fixed frame. Since wind turbine blades have complex curves, if the weighing sensor reading increases while the AGV forklift is moving the trimming mechanism, it indicates that the trimming mechanism is too high, and the AGV forklift's lifting arm is lowered; conversely, it is raised. The angle detection device detects the sway angle of the steel cables, thereby determining the distance between the AGV forklift and the wind turbine blade, and whether the trimming mechanism needs to be moved forward. This system has strong adaptive capabilities, greatly reducing the difficulty of operation.

[0020] The AGV forklift lifting arm drives the fixed frame to rise and fall, and the fixed frame drives the grinding mechanism to rise and fall. Both the connecting seat and the mounting seat have rotation capabilities, which enables the grinding mechanism to automatically adapt to the residual edges of the wind turbine blades, achieving automated grinding. This greatly reduces the labor intensity of operators and effectively protects their physical and mental health. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the trimming mechanism;

[0023] Figure 3 This is a side view of the trimming mechanism;

[0024] Figure 4 This is a schematic diagram of the cutting mechanism;

[0025] Figure 5 This is a schematic diagram of the angle detection device.

[0026] Figure 6 This is a schematic diagram of the grinding mechanism;

[0027] Figure 7 This is a side view of the grinding mechanism;

[0028] Figure 8 This is a schematic diagram of the balancing mechanism.

[0029] In the diagram: 1. AGV forklift; 2. Fixed frame; 3. Trimming mechanism; 3-1. Upper support; 3-2. Lower support; 3-3. Cutting machine I; 3-4. Connecting rod; 3-5. Swing arm; 3-6. Telescopic cylinder I; 3-7. Roller; 3-8. Drive motor; 3-9. Telescopic cylinder II; 3-10. Dust collection box I; 4. Weighing sensor; 5. Angle detection device; 5-1. Hinge plate; 5-2. Hinge shaft I; 5-3. Hinge shaft II; 5-4. Angle encoder; 6. Cutting mechanism; 6-1. Connecting rod; 6-2. Cutting machine II; 6-3. Telescopic cylinder III; 6-4. Dust collection box II; 6-5. Baffle; 7. Vacuum cleaner; 8. Grinding mechanism; 8-1. Connecting seat; 8-2. Buffer cylinder; 8-3. Mounting seat; 8-4. Grinding machine; 8-5. Guide wheel I; 8-6. Guide wheel II; 8-7. Connecting arm; 8-8. Balance arm; 8-9. Counterweight; 8-10. Lead screw; 8-11. Guide sleeve; 8-12. Guide post. Detailed Implementation

[0030] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0031] Example 1:

[0032] Combined with appendix Figures 1-3 A wind turbine blade trimming system includes an AGV forklift 1, the lifting arm of the AGV forklift 1 is equipped with a fixed frame 2, the AGV forklift 1 can automatically cruise according to the planned route, improving the degree of automation, and the lifting arm of the AGV forklift 1 can raise and lower the fixed frame 2 as needed.

[0033] It also includes an edge trimming mechanism 3, which can cut off the waste edges generated during the production of wind turbine blades. The edge trimming mechanism 3 is connected to the fixed frame 2 via steel cables, and a weighing sensor 4 and an angle detection device 5 are installed between the steel cables and the fixed frame 2. Since the wind turbine blades are complex curves, if the value of the weighing sensor 4 increases while the AGV forklift 1 is moving the edge trimming mechanism 3, it indicates that the height of the edge trimming mechanism 3 is too high, so the lifting arm of the AGV forklift 1 is lowered, and vice versa. The angle detection device 5 detects the sway angle of the steel cable, thereby determining the distance between the AGV forklift 1 and the wind turbine blade, and whether it is necessary to move the edge trimming mechanism 3 forward. It has strong adaptive capabilities and greatly reduces the difficulty of operation.

[0034] The trimming mechanism 3 includes an upper support 3-1, a lower support 3-2, and a cutting machine I 3-3. The upper support 3-1 and the lower support 3-2 are hinged on one side via a connecting rod 3-4, and both ends of the connecting rod 3-4 are fixedly connected to the upper support 3-1. A gap is left between the upper support 3-1 and the lower support 3-2 to allow waste material to pass through, meaning that during trimming operations, the waste material is positioned between the upper support 3-1 and the lower support 3-2. A swing arm 3-5 is rigidly connected to the connecting rod 3-4. A telescopic cylinder I 3-6 is provided at the bottom of the lower support 3-2, which engages the upper support 3-1 and the lower support 3-2 by pushing the swing arm 3-5. That is, the telescopic cylinder I 3-6 controls the upper support... The opening and closing of the upper support 3-1 and the lower support 3-2 facilitates the entry of the waste edge of the wind turbine blade between the upper support 3-1 and the lower support 3-2. The upper support 3-1 and the lower support 3-2 are each provided with multiple rollers 3-7 at intervals on the end away from the connecting rod 3-4. Among them, the roller 3-7 located on the upper support 3-1 is the driving wheel. The upper support 3-1 is provided with a drive motor 3-8 for driving the corresponding roller 3-7. That is, after the upper support 3-1 and the lower support 3-2 are engaged, the roller 3-7 can contact the waste edge of the wind turbine blade. The drive motor 3-8 drives the driving wheel, so that the upper support 3-1 and the lower support 3-2 can move along the waste edge of the wind turbine blade.

[0035] A cutting machine I3-3 is provided on one side of the upper support 3-1 corresponding to the roller 3-7. The middle part of the housing of the cutting machine I3-3 is rotatably connected to the upper support 3-1. A telescopic cylinder II3-9 is provided on one side of the upper support 3-1 corresponding to the cutting machine I3-3 to control the raising and lowering of the cutting head of the cutting machine I3-3. That is, during the trimming operation, the cutting head of the cutting machine I3-3 is lowered by the telescopic cylinder II3-9, so that the waste edge of the wind turbine blade can be removed. After the waste edge is removed, a residual edge will be generated.

[0036] The grinding mechanism 8 includes a connecting seat 8-1, a buffer cylinder 8-2, a mounting seat 8-3, and a grinding machine 8-4. One side of the connecting seat 8-1 is rotatably connected to the fixed frame 2, and the axis of rotation of the connecting seat 8-1 is horizontal. The other side of the connecting seat 8-1 is equipped with a buffer cylinder 8-2, the telescopic end of which is rotatably connected to the mounting seat 8-3. The axis of rotation of the mounting seat 8-3 is vertical. Because the residual edge of the wind turbine blade is a complex spatial curve, the mounting seat 8-3 needs to have both horizontal and vertical rotation capabilities. The top of the mounting seat 8-3 is equipped with a grinding machine. The grinding machine 8-4 and the mounting base 8-3 are equipped with guide wheels I 8-5 on both the left and right sides of the grinding head of the grinding machine 8-4. This means that during the grinding operation, the guide wheels I 8-5 can be made to contact the wind turbine blades. The grinding machine 8-4 can be started to grind the residual edges of the wind turbine blades. As needed, the mounting base 8-3 is equipped with multiple guide wheels II 8-6 at intervals on both the upper and lower sides of the grinding head of the grinding machine 8-4. This means that the guide wheels II 8-6 can ride along the residual edges of the wind turbine blades, so that the grinding mechanism 8 can better adapt to the changes in the trajectory of the residual edges of the wind turbine blades.

[0037] In implementing the wind turbine blade trimming system of this invention, during the trimming operation, the waste edge of the wind turbine blade is positioned between the upper support 3-1 and the lower support 3-2. The upper support 3-1 and the lower support 3-2 are engaged by the telescopic cylinder I 3-6, allowing the roller 3-7 to contact the waste edge of the wind turbine blade. The drive motor 3-8 drives the drive wheel, causing the upper support 3-1 and the lower support 3-2 to move along the waste edge of the wind turbine blade. Simultaneously, the cutting head of the cutting machine I 3-3 is lowered by the telescopic cylinder II 3-9, thereby cutting off the waste edge of the wind turbine blade. As the trimming mechanism 3 moves forward, the angle of the steel cable changes, triggering the angle detection device 5. The angle detection device 5 feeds back the signal to the AGV forklift 1, which then moves forward synchronously. If the value of the weighing sensor 4 increases during the trimming operation, it indicates that the height of the trimming mechanism 3 is too high, and the lifting arm of the AGV forklift 1 is lowered; otherwise, the lifting arm is raised.

[0038] During the grinding operation, the buffer cylinder 8-2 is extended to make the guide wheel I 8-5 contact the wind turbine blade. The grinding machine 8-4 is then started to grind the residual edge of the wind turbine blade. The AGV forklift 1 drives the grinding mechanism 8 forward along the set trajectory. The lifting arm of the AGV forklift 1 drives the fixed frame 2 to rise and fall. The fixed frame 2 drives the grinding mechanism 8 to rise and fall. Both the connecting seat 8-1 and the mounting seat 8-3 have rotation capabilities, so that the grinding mechanism 8 can automatically adapt to the residual edge of the wind turbine blade, realizing automated grinding. This greatly reduces the labor intensity of the operators and effectively protects their physical and mental health.

[0039] Example 2:

[0040] Combined with appendix Figures 1-4 A wind turbine blade trimming system differs from Embodiment 1 in that, based on Embodiment 1, a cutting mechanism 6 is provided between the fixed frame 2 and the trimming mechanism 3 and the grinding mechanism 8. The cutting mechanism 6 includes a connecting rod 6-1 with one end fastened to the fixed frame 2, and a cutting machine II 6-2 is provided at the other end of the connecting rod 6-1. The middle part of the housing of the cutting machine II 6-2 is rotatably connected to the connecting rod 6-1, and a telescopic cylinder III 6-3 for controlling the lifting and lowering of the cutting head of the cutting machine II 6-2 is provided between the tail of the housing of the cutting machine II 6-2 and the connecting rod 6-1. That is, when the waste edge cut by the trimming mechanism 3 reaches a certain length, the cutting machine II 6-2 can be segmented by the telescopic cylinder III 6-3 to avoid the waste edge being too long and inconvenient for centralized processing.

[0041] The lower support 3-2 is equipped with a dust collection box I3-10 below the cutting head of cutting machine I3-3; the connecting rod 6-1 is equipped with a dust collection box II6-4 below the cutting head of cutting machine II6-2, which can collect the debris generated during cutting waste edges through dust collection boxes I3-10 and II6-4; the fixed frame 2 is equipped with a vacuum cleaner 7, which is connected to dust collection boxes I3-10 and II6-4 through vacuum pipes, which can remove the debris from dust collection boxes I3-10 and II6-4 for centralized processing; the dust collection box II6-4 is equipped with a baffle 6-5 at the end away from the fixed frame 2, which can block and limit the waste edge, facilitating the cutting operation of cutting machine II6-2.

[0042] Example 3:

[0043] Combined with appendix Figures 1-5 A wind turbine blade trimming system, based on Embodiment 1 or 2, includes an angle detection device 5 comprising two hinge plates 5-1. One end of each hinge plate 5-1 is hinged to a corresponding hinge shaft I 5-2. One hinge plate 5-1 is hinged to a corresponding fixed frame 2 via a hinge shaft II 5-3, and the hinge shaft I 5-2 is fastened to the hinge plate 5-1. The hinge shaft II 5-3 is fastened to the fixed frame 2, meaning the hinge plate 5-1 can deflect around the hinge shaft II 5-3. The axis of the hinge shaft I 5-2 is perpendicular to the axis of the hinge shaft II 5-3. An angle encoder 5-4 is provided at one end of both the hinge shaft I 5-2 and the hinge shaft II 5-3. The other hinge plate 5-1 is connected to a steel cable via a weighing sensor 4, meaning that when the steel cable deflects, it can trigger the corresponding angle encoder 5-4, thereby accurately measuring the deflection angle and direction of the steel cable, so that the AGV forklift 1 can follow accordingly.

[0044] Example 4:

[0045] Combined with appendix Figures 1-8 A wind turbine blade trimming system differs from Embodiment 1 in that, based on Embodiment 1, the connecting seat 8-1 is connected to the fixed frame 2 via a balancing mechanism. The balancing mechanism includes a connecting arm 8-7, a balancing arm 8-8, and a counterweight 8-9. One end of the connecting arm 8-7 is fastened to the fixed frame 2, and the other end of the connecting arm 8-7 is provided with a balancing arm 8-8. The middle part of the balancing arm 8-8 is rotatably connected to the connecting arm 8-7. The connecting seat 8-1 is rotatably connected to one end of the balancing arm 8-8, and the other end of the balancing arm 8-8 is provided with a counterweight 8-9 for balancing the weight of the grinding mechanism 8. That is, the grinding mechanism 8 is in a floating state under the action of the balancing mechanism, so that the grinding mechanism 8 can better adapt to the changes in the trajectory of the residual edge of the wind turbine blade.

[0046] Example 5:

[0047] Combined with appendix Figures 1-8 A wind turbine blade trimming system, based on Embodiment 1 or 2, wherein the guide wheel I 8-5 and the mounting base 8-3 are slidably engaged via a horizontal slide rail. A lead screw 8-10 is rotatably connected to one end of the guide wheel I 8-5 corresponding to the connecting base 8-1. The lead screw 8-10 is threadedly connected to the mounting base 8-3, allowing adjustment of the extension length of the guide wheel I 8-5 via the lead screw 8-10. This, in turn, adjusts the distance between the grinding head of the grinder 8-4 and the residual edge of the wind turbine blade. The grinding head of the grinder 8-4 grinds... After damage, the guide wheel I 8-5 can be moved backward, thereby ensuring the grinding effect, increasing the service life of the grinding head of the grinder 8-4, and reducing production costs. In addition, the connecting seat 8-1 is provided with a guide sleeve 8-11 below the buffer cylinder 8-2, and a guide post 8-12 with one end fastened to the mounting seat 8-3 is slidably inserted. That is, the guide post 8-12 bears the weight of the grinder 8-4, avoiding the extension rod of the buffer cylinder 8-2 from bearing a large bending moment, and effectively improving the service life of the buffer cylinder 8-2.

[0048] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes falling within the meaning and scope of equivalents within this invention.

Claims

1. A wind turbine blade trimming system, comprising an AGV forklift (1), wherein the lifting arm of the AGV forklift (1) is provided with a fixed frame (2); characterized in that: It also includes an edge trimming mechanism (3) and a polishing mechanism (8). The edge trimming mechanism (3) is provided on one side of the fixed frame (2), and the polishing mechanism (8) is provided on the other side. The trimming mechanism (3) is connected to the fixed frame (2) by steel cable, and a weighing sensor (4) and an angle detection device (5) are provided between the steel cable and the fixed frame (2); the trimming mechanism (3) includes an upper support (3-1), a lower support (3-2) and a cutting machine I (3-3), the upper support (3-1) and the lower support (3-2) are hinged on one side by a connecting rod (3-4), and the two ends of the connecting rod (3-4) are fixedly connected to the upper support (3-1), and there is a gap between the upper support (3-1) and the lower support (3-2) to allow waste material to pass through; The connecting rod (3-4) is fastened to a swing arm (3-5). The bottom of the lower support (3-2) is equipped with a telescopic cylinder I (3-6) that engages the upper support (3-1) and the lower support (3-2) by pushing the swing arm (3-5). Multiple rollers (3-7) are spaced apart at the ends of the upper support (3-1) and the lower support (3-2) away from the connecting rod (3-4). Among these, the roller (3-7) located on the upper support (3-1) is the driving wheel. The support (3-1) is equipped with a drive motor (3-8) for driving the corresponding roller (3-7); the upper support (3-1) is equipped with a cutting machine I (3-3) on one side corresponding to the roller (3-7). The middle part of the housing of the cutting machine I (3-3) is rotatably connected to the upper support (3-1). The upper support (3-1) is equipped with a telescopic cylinder II (3-9) on one side corresponding to the cutting machine I (3-3) for controlling the lifting and lowering of the cutting head of the cutting machine I (3-3). The grinding mechanism (8) includes a connecting seat (8-1), a buffer cylinder (8-2), a mounting seat (8-3), and a grinding machine (8-4). One side of the connecting seat (8-1) is rotatably connected to the fixed frame (2), and the axis of rotation of the connecting seat (8-1) is horizontal. The other side of the connecting seat (8-1) is provided with a buffer cylinder (8-2), and the telescopic end of the buffer cylinder (8-2) is rotatably connected to the mounting seat (8-3), and the axis of rotation of the mounting seat (8-3) is vertical. The top of the mounting seat (8-3) is provided with a grinding machine (8-4), and the mounting seat (8-3) is provided with guide wheels I (8-5) on both the left and right sides of the grinding head of the grinding machine (8-4).

2. The wind turbine blade trimming system as described in claim 1, characterized in that: The fixed frame (2) is provided with a cutting mechanism (6) between the trimming mechanism (3) and the grinding mechanism (8). The cutting mechanism (6) includes a connecting rod (6-1) with one end fastened to the fixed frame (2). The other end of the connecting rod (6-1) is provided with a cutting machine II (6-2). The middle part of the housing of the cutting machine II (6-2) is rotatably connected to the connecting rod (6-1). The tail of the housing of the cutting machine II (6-2) is provided with a telescopic cylinder III (6-3) for controlling the lifting and lowering of the cutting head of the cutting machine II (6-2) between the connecting rod (6-1) and the connecting rod (6-1).

3. The wind turbine blade trimming system as described in claim 2, characterized in that: The lower support (3-2) is provided with a dust collection box I (3-10) below the cutting head of the cutting machine I (3-3); the connecting rod (6-1) is provided with a dust collection box II (6-4) below the cutting head of the cutting machine II (6-2).

4. The wind turbine blade trimming system as described in claim 3, characterized in that: The fixed frame (2) is equipped with a vacuum cleaner (7), which is connected to dust collection box I (3-10) and dust collection box II (6-4) through a vacuum pipe.

5. The wind turbine blade trimming system as described in claim 3, characterized in that: The dust collection box II (6-4) has a baffle (6-5) at one end away from the fixed frame (2).

6. The wind turbine blade trimming system as described in claim 1, characterized in that: The angle detection device (5) includes two hinge plates (5-1). One end of each hinge plate (5-1) is hinged to the other via hinge shaft I (5-2). One hinge plate (5-1) is hinged to the fixed frame (2) via hinge shaft II (5-3), and hinge shaft I (5-2) is fastened to the hinge plate (5-1). Hinge shaft II (5-3) is fastened to the fixed frame (2). The axis of hinge shaft I (5-2) is perpendicular to the axis of hinge shaft II (5-3). An angle encoder (5-4) is provided at one end of both hinge shaft I (5-2) and hinge shaft II (5-3). The other hinge plate (5-1) is connected to the steel cable via a weighing sensor (4).

7. The wind turbine blade trimming system as described in claim 1, characterized in that: The connecting seat (8-1) is connected to the fixed frame (2) through a balancing mechanism. The balancing mechanism includes a connecting arm (8-7), a balancing arm (8-8), and a counterweight (8-9). One end of the connecting arm (8-7) is fastened to the fixed frame (2), and the other end of the connecting arm (8-7) is provided with a balancing arm (8-8). The middle part of the balancing arm (8-8) is rotatably connected to the connecting arm (8-7). The connecting seat (8-1) is rotatably connected to one end of the balancing arm (8-8), and the other end of the balancing arm (8-8) is provided with a counterweight (8-9) for balancing the weight of the grinding mechanism (8).

8. The wind turbine blade trimming system as described in claim 1, characterized in that: The guide wheel I (8-5) and the mounting base (8-3) are slidably engaged by a horizontal slide rail. One end of the guide wheel I (8-5) corresponding to the connecting base (8-1) is rotatably connected to a lead screw (8-10), and the lead screw (8-10) is threadedly connected to the mounting base (8-3).

9. The wind turbine blade trimming system as described in claim 1, characterized in that: The connecting seat (8-1) is provided with a guide sleeve (8-11) below the buffer cylinder (8-2), and a guide post (8-12) with one end fastened to the mounting seat (8-3) is slidably inserted.

10. The wind turbine blade trimming system as described in claim 1, characterized in that: The mounting base (8-3) is provided with multiple guide wheels II (8-6) at intervals on both the upper and lower sides of the grinding head of the grinding machine (8-4).

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