Wind turbine blade size measurement device based on machine vision

Abstract

The present invention discloses a wind turbine blade size measuring device based on machine vision, which belongs to the field of laser measurement technology. The device comprises a support seat and an annular rod, wherein two movable holes are provided on the support seat, the annular rod is located in the movable holes, and a sliding support mechanism is provided on the outside of the annular rod for sliding. In the present invention, key components such as annular rod, second drive assembly, gear, toothed rod, laser measurement assembly, first drive assembly and reciprocating screw are adopted. The device enables the annular rod and toothed rod with notches to maintain smooth and stable rotation through the arrangement of four supporting wheels and two gears. This design not only improves the stability of the device, but also enables the rotating laser measurement assembly to perform laser measurement on the wind turbine blade along multiple angles. This multi-angle measurement method makes the laser measurement less susceptible to the influence of light and fixed angle measurement, thereby ensuring the accuracy of the laser measurement result to a certain extent.

Description

Technical Field

[0001] The invention belongs to the technical field of laser measurement, and in particular relates to a wind turbine blade size measuring device based on machine vision. Background Art

[0002] Dimensional inspection of wind turbine blades can improve measurement accuracy. The machine vision system can perform high-resolution and high-precision measurements, reduce human errors, and ensure that the blade dimensions meet design specifications, thereby improving the overall performance of the wind turbine. Automated measurement can be achieved. Through automated measurement, human intervention can be reduced, which not only improves work efficiency but also reduces labor costs, adapting to the needs of large-scale production and inspection. The production and inspection processes can be accelerated. Fast image processing and analysis technology can provide real-time feedback on measurement results, shorten the inspection cycle, and accelerate the production and delivery process of wind turbine blades. Improve blade quality control. Regular dimensional measurements can promptly detect problems in the production process and ensure product quality, thereby reducing the risk of rework or scrap due to unqualified dimensions.

[0003] In traditional wind turbine blade size measurement technology, laser rangefinders are widely used. However, this technology has certain limitations. Since the laser rangefinder measures the wind turbine blades along a fixed angle, factors such as strong light and reflective surfaces may affect the measurement results, resulting in inaccurate measurements and poor adaptability.

[0004] Based on this, the present invention designs a wind turbine blade size measuring device based on machine vision to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to propose a wind turbine blade size measurement device based on machine vision in order to solve the problem that when a laser rangefinder measures a wind turbine blade along a fixed angle, factors such as strong light and reflective surfaces may affect the measurement results, resulting in inaccurate measurement and unsatisfactory adaptability.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The wind turbine blade size measuring device based on machine vision comprises a support seat and an annular rod, the support seat is provided with two movable holes, the annular rod is located in the movable hole, a sliding support mechanism is slidably provided outside the annular rod, a movable adjustment mechanism connected to the support seat is penetrated through the front of the sliding support mechanism, the front of the annular rod is fixedly connected to a rotation control mechanism, the rotation control mechanism is fixedly connected to the front of the sliding support mechanism, a sliding groove is provided on the inner wall of the movable hole, the rotation control mechanism is slidably connected in the sliding groove, a swing measuring mechanism is fixedly connected to the inner arc surface of the annular rod, a movable adjustment mechanism is slidably connected to the swing measuring mechanism, the movable adjustment mechanism is fixedly connected to the back side of the annular rod, a magnetic block is fixedly connected to the back side of the sliding support mechanism, the left and right side surfaces of the support seat are fixedly connected to control panels, a fastening assembly is fixedly connected to the position corresponding to the movable hole on the support seat, and a support leg is fixedly connected to the support seat.

[0008] As a further description of the above technical solution:

[0009] The sliding support mechanism comprises four connecting frames, in which supporting wheels are rotatably connected, a recess is provided in the middle of the supporting wheels, and the outer arc surface of the annular rod is slidably connected in the recess.

[0010] As a further description of the above technical solution:

[0011] An intermediate rod is fixedly connected under the connecting frame, the magnetic block is fixedly connected to the back sides of the two intermediate rods on the upper side, the bottom end of the intermediate rod on the upper side is fixedly connected to the connecting frame, and the bottom ends of the two intermediate rods on the lower side are fixedly connected to the same connecting piece, and the movable adjustment mechanism is arranged through the connecting piece.

[0012] As a further description of the above technical solution:

[0013] The movable adjustment mechanism includes a first driving component, the first driving component is fixedly connected to a fixed rod outside, the top end of the fixed rod is fixedly connected under the support seat, the output shaft of the first driving component is fixedly connected to a reciprocating screw rod, the reciprocating screw rod is rotatably connected to a bearing seat outside, and the bearing seat is fixedly connected under the support seat.

[0014] As a further description of the above technical solution:

[0015] The length of the reciprocating screw rod is greater than the length of the moving hole, and the reciprocating screw rod is externally threadedly connected with a threaded cap, and the threaded cap penetrates and is connected to the front side of the connecting piece.

[0016] As a further description of the above technical solution:

[0017] The rotation control mechanism includes two second drive components, a fixed frame is fixedly connected to the lower part of the second drive component, a T-shaped sliding block is fixedly connected to the end of the fixed frame, the sliding block is slidably connected in the sliding groove, an extension rod is fixedly connected to the back side of the fixed frame, and the other end of the extension rod is fixedly connected to the outside of the middle rod.

[0018] As a further description of the above technical solution:

[0019] The output shaft of the second driving assembly is fixedly connected with a gear, and the sides of the two gears are meshed with a gear rod, and the gear rod is set to be a ring with a notch. One of the two gears always maintains a meshing state with the gear rod, and the gear rod and the ring rod are coaxially arranged.

[0020] As a further description of the above technical solution:

[0021] The swing measuring mechanism comprises a swing rod, one end of the swing rod close to the axial direction of the annular rod is fixedly connected with a laser measuring component, a sliding hole is opened on the front side of the swing rod, and the movable adjustment mechanism is slidably connected in the sliding hole.

[0022] As a further description of the above technical solution:

[0023] The swing rod is provided with a pin shaft, and two fixing plates are hinged outside the pin shaft. The fixing plates are fixedly connected to the inner arc surface of the annular rod. Two coil springs are arranged outside the pin shaft, and the two ends of the coil springs are fixedly connected to the swing rod and the fixing plate respectively.

[0024] As a further description of the above technical solution:

[0025] The movable adjustment mechanism includes a piston frame fixedly connected to the back of the annular rod, a magnetic extrusion plate slidably connected in the piston frame, a moving rod fixedly connected to the back of the magnetic extrusion plate, the moving rod is set in a C shape, the moving rod passes through and is slidably connected to the back of the piston frame, the side of the magnetic extrusion plate close to the magnetic block has the same magnetism, one end of the moving rod located outside the piston frame is fixedly connected to a ball, the moving rod is slidably connected in the sliding hole, an elastic component is arranged on the outer sleeve of the moving rod, the two ends of the elastic component are respectively fixedly connected to the magnetic extrusion plate and the piston frame, and two air holes are provided on the side of the piston frame, and the air holes are respectively located on the front and back sides of the magnetic extrusion plate.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In the present invention, key components such as an annular rod, a second driving assembly, gears, a toothed rod, a laser measuring assembly, a first driving assembly and a reciprocating screw are used, wherein the first driving assembly controls the threaded cap, the connecting piece and the laser measuring assembly to move back and forth through the reciprocating screw, and the second driving assembly uses gears to control the rotation of the toothed rod and the annular rod; the device is provided with four supporting wheels and two gears, so that the annular rod and the toothed rod with a gap can maintain smooth and stable rotation. This design not only improves the stability of the device, but also enables the rotating laser measuring assembly to perform laser measurement on the wind turbine blades at multiple angles. This multi-angle measurement method makes the laser measurement less susceptible to the influence of light and fixed angle measurement, thereby ensuring the accuracy of the laser measurement results to a certain extent.

[0028] 2. In the present invention, key components such as a piston frame, a magnetic extrusion plate, a magnetic block, a ball, a swing rod, a pin shaft and a coil spring are used. The magnetic extrusion plate will gradually approach and then move away from the magnetic block as it rotates. When the two gradually approach each other, the increased magnetic force controls the movement of the magnetic extrusion plate and the moving rod. The moving rod pulls the swing rod to rotate backward through the ball. When the magnetic extrusion plate and the magnetic block gradually move away from each other, the magnetic force decreases and the coil spring controls the swing rod and the pin shaft to reset and rotate. This design not only improves the stability of the device, but also enables the laser measurement component to swing back and forth continuously, thereby more flexibly measuring the wind turbine blades. This multi-angle measurement method makes the laser measurement less susceptible to the influence of light and fixed-angle measurement, thereby ensuring the accuracy of the laser measurement results to a certain extent.

[0029] 3. In the present invention, key components such as a piston frame, a moving rod and an air hole are used. When the magnetic extrusion plate is controlled by magnetic force to move backward, the magnetic extrusion plate will squeeze the gas in the piston frame to discharge it, and when the magnetic extrusion plate moves away from the magnetic block, the magnetic extrusion plate will reset forward. Since the gas in the piston frame is discharged or inhaled through the air hole, the speed of the moving process of the magnetic extrusion plate is limited, thereby avoiding the magnetic extrusion plate from moving quickly. This design not only improves the stability of the device, but also makes the swinging process of the swing rod more stable. This stable swinging mode enables the laser measurement component to measure the wind turbine blades more accurately, thereby ensuring the accuracy of the laser measurement results to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a three-dimensional structural schematic diagram of a wind turbine blade size measurement device based on machine vision proposed by the present invention;

[0031] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a wind turbine blade size measuring device based on machine vision proposed in the present invention;

[0032] Figure 3A schematic diagram of the three-dimensional structure of the mobile adjustment mechanism of the wind turbine blade size measurement device based on machine vision proposed by the present invention;

[0033] Figure 4 A schematic diagram of the three-dimensional structure of the annular rod of the wind turbine blade size measuring device based on machine vision proposed by the present invention;

[0034] Figure 5 The wind turbine blade size measuring device based on machine vision proposed by the present invention Figure 2 The enlarged structural diagram of part A in the middle;

[0035] Figure 6 A schematic diagram of the three-dimensional structure of the rotation control mechanism of the wind turbine blade size measurement device based on machine vision proposed by the present invention;

[0036] Figure 7 A schematic diagram of the rear-view stereoscopic structure of the annular rod of the wind turbine blade size measuring device based on machine vision proposed by the present invention;

[0037] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the movable adjustment mechanism of the wind turbine blade size measurement device based on machine vision proposed by the present invention.

[0038] Legend:

[0039] 1. Support seat; 2. Annular rod; 3. Moving hole; 4. Sliding support mechanism; 41. Connecting frame; 42. Intermediate rod; 43. Connecting piece; 44. Support wheel; 5. Moving adjustment mechanism; 51. First driving assembly; 52. Fixed rod; 53. Reciprocating screw rod; 54. Bearing seat; 55. Threaded cap; 6. Rotation control mechanism; 61. Second driving assembly; 62. Fixed frame; 63. Sliding block; 64. Extension rod; 65. Gear; 66. Gear rod; 7. Swing measuring mechanism; 71. Swing rod; 72. Sliding hole; 73. Laser measuring assembly; 74. Pin shaft; 75. Fixed plate; 76. Coil spring; 8. Movable adjustment mechanism; 81. Piston frame; 82. Magnetic extrusion plate; 83. Moving rod; 84. Ball; 85. Elastic assembly; 86. Air hole; 9. Magnetic block; 10. Support leg; 11. Control panel; 12. Sliding groove. DETAILED DESCRIPTION

[0040] 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.

[0041] Please see attached Figure 1 -Attached Figure 8 The present invention provides a technical solution: a wind turbine blade size measuring device based on machine vision, comprising a support seat 1 and an annular rod 2, the support seat 1 is provided with two moving holes 3, the annular rod 2 is located in the moving holes 3, a sliding support mechanism 4 is slidably provided outside the annular rod 2, a moving adjustment mechanism 5 connected to the support seat 1 is penetrated through the front of the sliding support mechanism 4, a rotation control mechanism 6 is fixedly connected to the front of the sliding support mechanism 4, a sliding groove 12 is provided on the inner wall of the moving hole 3, the rotation control mechanism 6 is slidably connected in the sliding groove 12, a swing measuring mechanism 7 is fixedly connected to the inner arc surface of the annular rod 2, an active adjustment mechanism 8 is slidably connected in the swing measuring mechanism 7, the active adjustment mechanism 8 is fixedly connected to the back of the annular rod 2, a magnetic block 9 is fixedly connected to the back of the sliding support mechanism 4, a control panel 11 is fixedly connected to the left and right sides of the support seat 1, a fastening component is fixedly connected to the position corresponding to the moving hole 3 on the support seat 1, and a support leg 10 is fixedly connected to the bottom of the support seat 1.

[0042] The fastening assembly used can fix the wind turbine blade to avoid deviation during the measurement process. The laser measurement assembly 73 uses laser means to measure the wind turbine blade and displays the measurement results through the control panel 11;

[0043] Specifically, Figure 2-3 and Figure 7 As shown, the sliding support mechanism 4 includes four connecting frames 41, and a supporting wheel 44 is rotatably connected inside the connecting frame 41. A recess is provided in the middle of the supporting wheel 44, and the outer arc surface of the annular rod 2 is slidably connected in the recess.

[0044] An intermediate rod 42 is fixedly connected to the lower part of the connecting frame 41, and the magnetic block 9 is fixedly connected to the back sides of the two intermediate rods 42 on the upper side. The bottom end of the intermediate rod 42 on the upper side is fixedly connected to the connecting frame 41, and the bottom ends of the two intermediate rods 42 on the lower side are fixedly connected to the same connecting piece 43, and the movable adjustment mechanism 5 is arranged through the connecting piece 43.

[0045] The four support wheels 44 cooperate to ensure that the annular rod 2 is supported during the rotation process, so that the wind turbine blades can be smoothly placed between the annular rods 2 with notches, and the annular rod 2 can be smoothly and stably rotated between the support wheels 44; the connecting frame 41 and the middle rod 42 connect the four support wheels 44 as a whole, so that the annular rod 2 can be conveniently controlled to move forward and backward through the four support wheels 44;

[0046] Specifically, Figure 2-3As shown, the movable adjustment mechanism 5 includes a first driving component 51, the first driving component 51 is fixedly connected to a fixed rod 52 outside, the top of the fixed rod 52 is fixedly connected under the support seat 1, the output shaft of the first driving component 51 is fixedly connected to a reciprocating screw 53, the reciprocating screw 53 is rotatably connected to a bearing seat 54 outside, and the bearing seat 54 is fixedly connected under the support seat 1.

[0047] The length of the reciprocating screw rod 53 is greater than the length of the moving hole 3 . The reciprocating screw rod 53 is externally threadedly connected with a threaded cap 55 . The threaded cap 55 penetrates and is connected to the front side of the connecting piece 43 .

[0048] The first driving assembly 51 can be used to control the rotation of the reciprocating screw 53, and the reciprocating screw 53 uses the threaded cap 55 to control the connection frame 41 and the support wheel 44 to move horizontally, so as to smoothly control the movement process of the annular rod 2;

[0049] Specifically, Figure 3-7 As shown, the rotation control mechanism 6 includes two second drive components 61, a fixed frame 62 is fixedly connected at the bottom of the second drive component 61, a T-shaped sliding block 63 is fixedly connected to the end of the fixed frame 62, the sliding block 63 is slidably connected in the sliding groove 12, and an extension rod 64 is fixedly connected to the back of the fixed frame 62, and the other end of the extension rod 64 is fixedly connected to the outside of the intermediate rod 42.

[0050] The output shaft of the second driving assembly 61 is fixedly connected with a gear 65, and the sides of the two gears 65 are meshed with a gear rod 66, and the gear rod 66 is set to be a ring with a notch. One of the two gears 65 always maintains a meshing state with the gear rod 66, and the gear rod 66 and the ring rod 2 are coaxially arranged.

[0051] A sliding block 63 and a sliding groove 12 are used, and the sliding block 63 moves forward and backward along the sliding groove 12 to ensure that the second drive component 61, the connecting frame 41 and the supporting wheel 44 move smoothly and stably in the forward and backward directions, so that the laser measurement component 73 can move smoothly and stably along the direction of the wind turbine blade. The setting of the two gears 65 can ensure that the gear rod 66 at least keeps meshing with one of the gears 65 and always keeps rotating with the gear rod 66. The second drive component 61 uses the gear 65 to control the rotation of the gear rod 66 and the annular rod 2, and uses the reciprocating screw 53 to drive the movement of the threaded cap 55 to smoothly control the movement of the second drive component 61.

[0052] Specifically, Figure 7-8 As shown, the swing measuring mechanism 7 includes a swing rod 71, and a laser measuring assembly 73 is fixedly connected to one end of the swing rod 71 close to the axial direction of the annular rod 2. A sliding hole 72 is opened on the front side of the swing rod 71, and the movable adjustment mechanism 8 is slidably connected in the sliding hole 72.

[0053] A pin shaft 74 is provided on the swing rod 71, and two fixing plates 75 are hinged outside the pin shaft 74. The fixing plates 75 are fixedly connected to the inner arc surface of the annular rod 2. Two coil springs 76 are provided outside the pin shaft 74, and the two ends of the coil spring 76 are fixedly connected to the swing rod 71 and the fixing plates 75 respectively.

[0054] The swing rod 71 is limited by the pin 74 and can swing to a certain extent, and the coil spring 76 acts on the pin 74 to prevent the swing rod 71 from shaking at will. The swinging process of the laser measurement component 73 can measure the wind turbine blade along multiple angles;

[0055] Specifically, Figure 7-8 As shown, the movable adjustment mechanism 8 includes a piston frame 81 fixedly connected to the back of the annular rod 2, a magnetic extrusion plate 82 is slidably connected in the piston frame 81, a moving rod 83 is fixedly connected to the back of the magnetic extrusion plate 82, and the moving rod 83 is set in a C shape. The moving rod 83 passes through and is slidably connected to the back of the piston frame 81. The side of the magnetic extrusion plate 82 close to the magnetic block 9 has the same magnetism. The end of the moving rod 83 located outside the piston frame 81 is fixedly connected to a ball 84, and the moving rod 83 is slidably connected in the sliding hole 72. An elastic component 85 is provided on the outer sleeve of the moving rod 83. The two ends of the elastic component 85 are respectively fixedly connected to the magnetic extrusion plate 82 and the piston frame 81. Two air holes 86 are opened on the side of the piston frame 81, and the air holes 86 are respectively located on the front and rear sides of the magnetic extrusion plate 82.

[0056] The piston frame 81 and the magnetic extrusion plate 82 will gradually rotate closer to the magnetic block 9. The increased magnetic force between the magnetic block 9 and the magnetic extrusion plate 82 will drive the moving rod 83 and the ball 84 to move backward. The ball 84 controls the swing rod 71 and the laser measurement component 73 to swing backward, and the magnetic extrusion plate 82 squeezes and discharges the gas in the piston frame 81 through the air hole 86. When the magnetic extrusion plate 82 rotates away from the magnetic block 9, the magnetic force between the magnetic block 9 and the magnetic extrusion plate 82 decreases. At the same time, the coil spring 76 controls the swing rod 71 and the laser measurement component 73 to rotate forward. Since the amount of gas passing through the air hole 86 is limited, the moving speed of the magnetic extrusion plate 82 is limited, and the swing rod 71 and the laser measurement component 73 slowly reset.

[0057] Working principle: when in use: directly place the wind turbine blade to be measured on the support seat 1 at the position corresponding to the movable hole 3, and fasten the wind turbine blade through the fastening assembly, and then control the operation of the laser measurement assembly 73, the first drive assembly 51 and the second drive assembly 61. The first drive assembly 51 controls the rotation of the reciprocating screw rod 53. When the reciprocating screw rod 53 rotates, the threaded cap 55 and the connecting piece 43 are controlled to move. During the movement of the connecting piece 43, the annular rod 2 is controlled to move through the intermediate rod 42, the connecting frame 41 and the supporting wheel 44. During the movement of the annular rod 2, the laser measurement assembly 73 is driven to move backward. When the second drive assembly 61 controls the gear 65 to rotate, the gear rod 66 and the annular rod 2 are driven to rotate through the meshing action. The laser measurement assembly 73 moves backward and rotates around the wind turbine blade. As the laser measurement assembly 73 rotates, the piston frame 81 and the magnetic extrusion plate 82 gradually approach As the magnetic block 9 rotates, the magnetic force between the magnetic block 9 and the magnetic extrusion plate 82 increases, which drives the moving rod 83 and the ball 84 to move backward. The ball 84 controls the swing rod 71 and the laser measurement component 73 to swing backward, and the magnetic extrusion plate 82 squeezes and discharges the gas in the piston frame 81 through the air hole 86. When the magnetic extrusion plate 82 rotates away from the magnetic block 9, the magnetic force between the magnetic block 9 and the magnetic extrusion plate 82 decreases. At the same time, the coil spring 76 controls the swing rod 71 and the laser measurement component 73 to rotate forward. Since the amount of gas passing through the air hole 86 is limited, the moving speed of the magnetic extrusion plate 82 is limited, and the swing rod 71 and the laser measurement component 73 slowly reset, so that the laser measurement component 73 rotates around the wind turbine blade and swings back and forth, and the wind turbine blade is measured along multiple angles. The measurement angle is more variable and less susceptible to the influence of light and fixed angle measurement, and the measurement of the wind turbine blade is more comprehensive and accurate.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wind turbine blade size measuring device based on machine vision, comprising a support base (1) and an annular rod (2), characterized in that: The support seat (1) has two movable holes (3), the annular rod (2) is located in the movable hole (3), a sliding support mechanism (4) is slidably provided outside the annular rod (2), a movable adjustment mechanism (5) connected to the support seat (1) is penetrated through the front of the sliding support mechanism (4), a rotation control mechanism (6) is fixedly connected to the front of the sliding support mechanism (4), a sliding groove (12) is provided on the inner wall of the movable hole (3), and the rotation control mechanism (6) is slidably connected to the sliding groove (12). In the movable groove (12), a swing measuring mechanism (7) is fixedly connected to the inner arc surface of the annular rod (2), a movable adjustment mechanism (8) is slidably connected to the inside of the swing measuring mechanism (7), the movable adjustment mechanism (8) is fixedly connected to the back of the annular rod (2), a magnetic block (9) is fixedly connected to the back of the sliding support mechanism (4), a control panel (11) is fixedly connected to the left and right side surfaces of the support seat (1), a fastening component is fixedly connected to the position of the support seat (1) corresponding to the movable hole (3), and a support leg (10) is fixedly connected to the bottom of the support seat (1); The swing measuring mechanism (7) comprises a swing rod (71), one end of the swing rod (71) close to the axial direction of the annular rod (2) is fixedly connected to a laser measuring assembly (73), a sliding hole (72) is provided on the front side of the swing rod (71), and the movable adjustment mechanism (8) is slidably connected in the sliding hole (72); The movable adjustment mechanism (8) comprises a piston frame (81) fixedly connected to the back of the annular rod (2), a magnetic extrusion plate (82) being slidably connected in the piston frame (81), a moving rod (83) being fixedly connected to the back of the magnetic extrusion plate (82), the moving rod (83) being arranged in a C shape, penetrating through and slidably connected to the back of the piston frame (81), the side of the magnetic extrusion plate (82) close to the magnetic block (9) having the same magnetism, a round ball (84) being fixedly connected to one end of the moving rod (83) located outside the piston frame (81), the moving rod (83) being slidably connected in the sliding hole (72), an elastic component (85) being provided on the outer sleeve of the moving rod (83), the two ends of the elastic component (85) being respectively fixedly connected to the magnetic extrusion plate (82) and the piston frame (81), and two air holes (86) being respectively arranged on the side of the piston frame (81), the air holes (86) being respectively located on the front and rear sides of the magnetic extrusion plate (82).

2. The wind turbine blade size measuring device based on machine vision according to claim 1, characterized in that: The sliding support mechanism (4) comprises four connecting frames (41), a supporting wheel (44) being rotatably connected inside the connecting frames (41), a recess being provided in the middle of the supporting wheel (44), and the outer arc surface of the annular rod (2) being slidably connected in the recess.

3. The wind turbine blade size measuring device based on machine vision according to claim 2 is characterized in that: An intermediate rod (42) is fixedly connected to the bottom of the connecting frame (41); the magnetic block (9) is fixedly connected to the back of the two intermediate rods (42) located on the upper side; the bottom end of the intermediate rod (42) on the upper side is fixedly connected to the connecting frame (41); the bottom ends of the two intermediate rods (42) on the lower side are fixedly connected to the same connecting piece (43); and the movable adjustment mechanism (5) is arranged through the connecting piece (43).

4. The wind turbine blade size measuring device based on machine vision according to claim 3 is characterized in that: The movable adjustment mechanism (5) comprises a first driving component (51), the first driving component (51) is fixedly connected to a fixing rod (52) outside, the top end of the fixing rod (52) is fixedly connected under the support seat (1), the output shaft of the first driving component (51) is fixedly connected to a reciprocating screw rod (53), the reciprocating screw rod (53) is rotatably connected to a bearing seat (54) outside, and the bearing seat (54) is fixedly connected under the support seat (1).

5. The wind turbine blade size measuring device based on machine vision according to claim 4 is characterized in that: The length of the reciprocating screw rod (53) is greater than the length of the moving hole (3); the reciprocating screw rod (53) is externally threadedly connected to a threaded cap (55); and the threaded cap (55) penetrates and is connected to the front side of the connecting piece (43).

6. The wind turbine blade size measuring device based on machine vision according to claim 3 is characterized in that: The rotation control mechanism (6) comprises two second drive components (61), a fixing frame (62) being fixedly connected below the second drive component (61), a T-shaped sliding block (63) being fixedly connected at the end of the fixing frame (62), the sliding block (63) being slidably connected in the sliding groove (12), an extension rod (64) being fixedly connected at the back of the fixing frame (62), the other end of the extension rod (64) being fixedly connected to the outside of the intermediate rod (42).

7. The wind turbine blade size measuring device based on machine vision according to claim 6, characterized in that: The output shaft of the second drive assembly (61) is fixedly connected to a gear (65), and the sides of the two gears (65) are meshed with a gear rod (66), and the gear rod (66) is arranged in a ring shape with a notch, and one of the two gears (65) always maintains a meshing state with the gear rod (66), and the gear rod (66) and the ring rod (2) are arranged coaxially.

8. The wind turbine blade size measuring device based on machine vision according to claim 1, characterized in that: The swing rod (71) is provided with a pin shaft (74), the pin shaft (74) is hingedly connected to two fixing plates (75) on the outside, the fixing plates (75) are fixedly connected to the inner arc surface of the annular rod (2), and the pin shaft (74) is provided with two coil springs (76) on the outer sleeve, the two ends of the coil spring (76) are respectively fixedly connected to the swing rod (71) and the fixing plates (75).

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