A positioning device for detecting wind turbine blades

Abstract

The present invention relates to the technical field of wind power generation, and specifically to a positioning device for detecting wind power generation blades, which comprises a table, a wind power generation body is arranged on the top of the table, a clamping structure is arranged on the surface of the table, limiting structures are arranged on both sides of the clamping structure, and a lifting structure is arranged on the top of the limiting structure. The blades of the wind power generation body are limited to the left and right by gathering inwards with two groups of first swing rods and arc-shaped limiting disks, and the second swing rod and the lifting disk can also be driven to lift upward so that the blades are contacted and limited up and down. Part of it is to prevent the staff from being injured when the blades rotate during detection by the protection of the arc-shaped limiting disk, and part of it is to completely clamp the blades of the wind power generation body, which is beneficial to improving the effect of detecting the wind power generation body, and the clamping block is arranged by silicone, so when the wind wheel is clamped, the friction force can be increased to limit the rotation of the wind wheel, which is beneficial to improving the service life of the wind wheel and preventing the clamping block from rotating.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a positioning device for detecting wind power generation blades. Background Art

[0002] The design of the blades in a wind turbine directly affects the conversion efficiency of wind energy and its annual power generation, and is an important part of wind energy utilization. The blades are the basic and key components of a wind turbine. Their good design, reliable quality and superior performance are the decisive factors to ensure the normal and stable operation of the unit.

[0003] After searching the application number: 202223083708.7, a positioning device for wind power generation blade detection is disclosed. The utility model adjusts the connection position of the connecting column and the support plate by moving the slider in the annular groove. At the same time, the connection length of the extension column and the connecting column can be adjusted by pulling the extension column, so that blades of different sizes and lengths can be limited. Moreover, the height of the blade fixation can be adjusted by the first electric hydraulic cylinder, the second electric hydraulic cylinder and the third electric hydraulic cylinder, which further facilitates the inspection of the blade by personnel of different heights.

[0004] However, the above document does not explain what material is used for the support block used for blade clamping and limiting, so it is easy to understand that it is made of hard material. If hard material is used to clamp wind turbine blades or other parts, it is easy to cause damage, which will obviously reduce the service life of subsequent wind turbine blades and even cause damage; and when the blades are clamped, the clamping device is easy to drive the blades to rotate. If the blades are driven to rotate by the clamping device, the staff performing inspection, maintenance or other operations near the blades may be injured. In view of this, we propose a positioning device for wind turbine blade inspection. Summary of the invention

[0005] The object of the present invention is to provide a positioning device for wind power generation blade detection to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides a positioning device for wind power generation blade detection, comprising a table, a wind power generation body is arranged on the top of the table, a clamping structure is arranged on the surface of the table, limiting structures are arranged on both sides of the clamping structure, and a lifting structure is arranged on the top of the limiting structure;

[0007] The wind wheel of the wind power generation body is clamped and protected by the clamping structure, the limiting structure is driven to gather inward to limit and protect the blades of the wind power generation body, and at the same time the limiting structure is driven to rise to clamp the blades of the wind power generation body.

[0008] Preferably, an external motor is fixedly connected to the bottom of the table, and a rotating shaft fixed at the output shaft end of the external motor passes through the table and is fixedly connected to the bottom of the clamping structure.

[0009] Preferably, the clamping structure includes a fixed plate, which is fixedly connected to the surface of the table, and the surface of the fixed plate is respectively provided with a first sliding groove, a rotating plate is rotatably connected inside the fixed plate, and the surface of the rotating plate is slidably connected to a limiting block, and the surface of the rotating plate is provided with a pentagonal groove that matches the limiting block, and the end of the limiting block away from the rotating plate is fixedly connected to a clamping block, and the surface of the limiting block is matched with the first sliding groove.

[0010] Preferably, there are five groups of first sliding grooves on the surface of the fixed plate, and each group of the first sliding grooves is placed with five groups of limit blocks, the clamping blocks are made of silicone, and the inner side of the clamping blocks is wavy.

[0011] Preferably, the limiting structure includes a first swing rod, which is rotatably connected to the bottom of the rotating disk, and the first swing rod is rotatably connected to a sliding column on the side away from the rotating disk, and the top of the sliding column is fixedly connected to an arc-shaped limiting disk for clamping the limiting blade, and the end of the sliding column away from the arc-shaped limiting disk is slidably connected to a second slide groove, and the second slide groove is opened on the surface of the table.

[0012] Preferably, the first swing rod, the sliding column, the arc-shaped limit plate and the second slide groove are symmetrically arranged in two groups along the transverse center of the table, the surface of the arc-shaped limit plate is arranged as an inclined surface, and the sliding column and the second slide groove are adapted to each other.

[0013] Preferably, the lifting structure includes a fixed block, which is fixedly connected to the outer ring surface of the sliding column, and a second swing rod is rotatably connected inside the fixed block, and the second swing rod is rotatably connected to a limiting plate on the side away from the fixed block, and a lifting plate for limiting the upper and lower positions of the blades is fixedly connected to the top of the limiting plate, and a telescopic limiting column is fixedly connected to the bottom of the lifting plate, and the bottom of the telescopic limiting column is fixedly connected to the table.

[0014] Preferably, the fixed block, the second swing arm, the limit plate and the lifting plate are symmetrically arranged in two groups along the horizontal center of the table, the second swing arm is telescopic, the lifting plate is silicone, and the telescopic limit column is telescopic.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the positioning device for detecting wind turbine blades, the rotating disk is rotated to drive the limit blocks and clamping blocks of each group to rotate, so that the wind wheel of the wind turbine body is clamped and limited, and the clamping block is set by silicone, so when the wind wheel is clamped, the friction force can be increased to limit the rotation of the wind wheel, and the wind wheel can also be protected, which is beneficial to increasing the service life of the wind wheel and preventing the clamping block from rotating.

[0017] 2. In this positioning device for detecting wind turbine blades, two groups of first swing arms and arc-shaped limit plates are gathered inward to limit the left and right positions of the blades of the wind turbine body, and the second swing arm and the lifting plate can also be driven to lift upward to make the blades contact and limit the upper and lower parts. In part, when the blades rotate during detection, the arc-shaped limit plate can protect the workers from injury. In part, the blades of the wind turbine body are completely stuck to further reduce the rotation of the blades of the wind turbine body, which is beneficial to improve the effect of detecting the wind turbine body and improve the working safety environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure assembly of the present invention;

[0019] Figure 2 It is a top view of the overall structure of the present invention;

[0020] Figure 3 It is a side perspective view of the overall structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the disassembly of the clamping structure of the present invention;

[0022] Figure 5 It is a bottom-up stereoscopic diagram of the limiting structure and the lifting structure of the present invention;

[0023] Figure 6 It is a two-dimensional schematic diagram of the limiting structure and the lifting structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the overall structure of the present invention after the motion state;

[0025] Figure 8 It is a schematic diagram of the clamping structure of the present invention after being disassembled in a moving state;

[0026] Fig. 9 It is a schematic diagram of the limiting structure and the lifting structure of the present invention after the movement state.

[0027] The meaning of each number in the figure is:

[0028] 1. Table; 2. Wind power generation body; 300. Clamping structure; 301. Fixed plate; 302. Limiting block; 303. Rotating plate; 304. Clamping block; 305. First slide slot; 400. Limiting structure; 401. First swing rod; 402. Sliding column; 403. Arc-shaped limiting plate; 404. Second slide slot; 500. Lifting structure; 501. Fixed block; 502. Second swing rod; 503. Limiting plate; 504. Lifting plate; 505. Telescopic limiting column; 6. External motor. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in 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.

[0030] For the embodiments of the present invention, please refer to Figure 1-Figure 9 A positioning device for wind turbine blade detection includes a table 1, a wind turbine body 2 is arranged on the top of the table 1, a clamping structure 300 is arranged on the surface of the table 1, both sides of the clamping structure 300 are arranged with a limiting structure 400, and a lifting structure 500 is arranged on the top of the limiting structure 400;

[0031] The wind wheel of the wind power generation body 2 is clamped and protected by the clamping structure 300, and the limiting structure 400 is driven to gather inward to limit and protect the blades of the wind power generation body 2, and at the same time, the limiting structure 400 is driven to rise to clamp the blades of the wind power generation body 2;

[0032] The present invention takes into account that the existing blade clamping and limiting is easy to cause blade damage (because most of the existing clamping equipment uses a hard material structure). During the clamping process of the hard structure, the service life of the subsequent wind power generation blades will be reduced, and even damage will occur. Therefore, the rotating disk 303 is rotated to drive the limit blocks 302 and the clamping blocks 304 of each group to rotate, so that the wind wheel of the wind power generation body 2 is clamped and limited, and the clamping block 304 is set by silica gel, so when the wind wheel is clamped, the friction force can be increased to limit the rotation of the wind wheel, and the wind wheel can also be protected, which is beneficial to increase the service life of the wind wheel, and at the same time prevent the clamping block 304 from rotating;

[0033] Furthermore, when the blades are clamped, the clamping device may easily drive the blades to rotate. Even due to external factors (such as wind or human factors), if the blades are driven to rotate by the clamping device, the staff who are performing inspection, maintenance or other operations near the blades may be injured. Therefore, the two sets of first swing rods 401 and arc-shaped limit plates 403 are gathered inward to limit the left and right positions of the blades of the wind power generation body 2, and the second swing rod 502 and the lifting plate 504 can also be driven to lift upward to make the blades contact and limit the upper and lower parts. In part, when the blades rotate during inspection, the arc-shaped limit plate 403 can protect the staff from being injured, and in part, the blades of the wind power generation body 2 are completely stuck, so as to further reduce the rotation of the blades of the wind power generation body 2, which is beneficial to improve the effect of detecting the wind power generation body 2 and improve the working safety environment.

[0034] As for the wind power generation body 2, it is composed of components such as a wind rotor, blades, a generator (including devices), a direction adjuster (tail), a tower, a speed limit safety mechanism and an energy storage device, and its working principle is that the wind rotor rotates under the action of wind force, and it converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates under the drive of the wind rotor shaft to generate electricity and store it;

[0035] On the basis of the above, the following specific structures need to be disclosed in detail:

[0036] First, in order to better drive the entire device, the following specific structure needs to be disclosed in detail, please refer to Figure 1-Figure 6 The bottom of the table 1 is fixedly connected with an external motor 6, and a rotating shaft fixed at the output shaft end of the external motor 6 passes through the table 1 and is fixedly connected with the bottom of the clamping structure 300;

[0037] As for the working principle of the external motor, it is well known in the art that the motor generates a rotating magnetic field through an energized coil (stator winding), and acts on a rotor (such as a squirrel cage closed aluminum frame) to form a magneto-electrical rotation torque, and drives the output shaft to rotate;

[0038] As for the external motor 6 being set to be able to turn forward and backward by only 60 degrees, it is to better drive the swing of the clamping structure 300 and the limiting structure 400. One part is for the clamping structure 300 to swing and merge into a circular limiting wind wheel in the wind power generation, and the other part is for the limiting structure 400 to swing and shrink the blades in the limiting wind power generation, which is beneficial to improve the subsequent limiting of the wind power generation body 2 and improve the subsequent inspection effect of the wind power generation body 2 by the staff;

[0039] In order to clamp and limit the impeller in the wind power generation body 2, the following specific structure needs to be disclosed in detail, please refer to Figure 1-Figure 4The clamping structure 300 includes a fixed plate 301, which is fixedly connected to the surface of the table 1. The surface of the fixed plate 301 is respectively provided with first slide grooves 305. The fixed plate 301 is rotatably connected with a rotating plate 303. The surface of the rotating plate 303 is slidably connected with a limiting block 302. The surface of the rotating plate 303 is provided with a pentagonal groove (not marked in the text) that matches the limiting block 302. The end of the limiting block 302 away from the rotating plate 303 is fixedly connected with a clamping block 304. The surface of the limiting block 302 matches the first slide groove 305.

[0040] There are five groups of first slide grooves 305 on the surface of the fixed plate 301, and each group of first slide grooves 305 is placed with five groups of limit blocks 302, the clamping block 304 is made of silicone, and the inner side of the clamping block 304 is wavy;

[0041] As for the circular hole (not marked in the text) opened in the middle of the fixed plate 301, it is used to place the impeller in the wind power generation, so as to better clamp and limit the impeller in the wind power generation body 2 to prevent rotation. As for the limiting blocks 302 and the first sliding grooves 305, five groups are respectively provided, so as to make the limiting blocks 302 slide in the first sliding grooves 305 and form a clamping with the impeller placed in the circular hole opened in the middle of the fixed plate 301, which is conducive to improving the clamping effect of the impeller.

[0042] As for the clamping block 304, there are three groups of silicone rubber, because the silicone rubber can fill the small pores and depressions on the uneven surface, so that the surface of the wind power generation body 2 and the contact surface of the silicone rubber fit more closely, thereby reducing the existence of the air layer, increasing the actual contact area, and then increasing the friction force, preventing the wind power generation body 2 from rotating and clamping the limit at the same time;

[0043] When the impeller in the wind power generation body 2 is placed in the circular hole opened in the fixed disk 301, the external motor 6 is driven to rotate the rotating disk 303 to which the output shaft end is fixedly connected in the positive direction by 60 degrees, and the bottom of the limit block 302 is simultaneously driven to slide in the pentagonal groove opened on the surface of the rotating disk 303, and the top of the limit block 302 will slide inside the first slide groove 305. When the pentagonal slide groove and the first slide groove 305 are synchronously restricted, the five groups of limit blocks 302 will gather inwards to be combined to adapt to the circular hole opened in the fixed disk 301 (please refer to the specific state). Figure 8 ), so that the impeller end of the wind power generation body 2 is clamped and limited to prevent it from rotating. At the same time, the five groups of limit blocks 302 gather inwards to drive the three groups of clamping blocks 304 to gather inwards, so that they contact the outer annular surface of the impeller in the wind power generation body 2 to prevent the impeller of the wind power generation body 2 from rotating. At the same time, the clamping block 304 is set by silica gel, which can increase the friction force with the impeller of the wind power generation body 2, which can not only further prevent the impeller of the wind power generation body 2 from rotating, but also clamp the impeller of the wind power generation body 2 to limit it;

[0044] In order to achieve the left and right limit of the blades in the wind power generation body 2, the following specific structure needs to be disclosed in detail, please refer to Figure 1-Figure 6 The limiting structure 400 includes a first swinging rod 401, which is rotatably connected to the bottom of the rotating disk 303, and a sliding column 402 is rotatably connected to the side of the first swinging rod 401 away from the rotating disk 303, and an arc-shaped limiting disk 403 for clamping the limiting blade is fixedly connected to the top of the sliding column 402, and an end of the sliding column 402 away from the arc-shaped limiting disk 403 is slidably connected to a second slide groove 404, and the second slide groove 404 is opened on the surface of the table 1;

[0045] The first swing rod 401, the sliding column 402, the arc-shaped limit plate 403 and the second slide groove 404 are symmetrically arranged in two groups along the horizontal center of the table 1. The surface of the arc-shaped limit plate 403 is an inclined surface, and the sliding column 402 and the second slide groove 404 are adapted to each other;

[0046] As for the first swinging rod 401, both ends are connected to the rotating plate 303 and the sliding column 402 for rotation through the pin shaft, so that the rotating plate 303 can better drive the first swinging rod 401 to swing during the 60-degree forward rotation, so that the two sets of arc-shaped limit plates 403 are combined to contact the blades in the wind power generation body 2;

[0047] As for the curved limiting plate 403 having an inclined surface, it is to prevent the external wind from blowing towards the wind power generation body 2, and can resist and change the wind force at the same time, so as to prevent the wind power generation body 2 from rotating due to the wind force and affecting the staff's detection of the wind power generation body 2, and the mutual adaptation of the sliding column 402 and the second sliding groove 404 is to ensure that the curved limiting plate 403 cannot change direction during the movement process, and further prevent the curved limiting plate 403 from causing damage to the blades in the wind power generation body 2, and the sliding column 402 is made of metal. Due to the high density of metal, the strength of the supporting force is increased synchronously, and metal is also suitable for heavy loads of certain objects, so as to make the sliding column 402 sufficiently support the curved limiting plate 403, prevent the curved limiting plate 403 from collapsing and causing damage to the wind power generation body 2, which is conducive to improving the curved limiting plate 403 from being affected during the movement process;

[0048] When the rotating disk 303 rotates sixty degrees in the forward direction, the first swing rod 401 will be synchronously driven to swing around the center of the sliding column 402. During the swinging process of the first swing rod 401, the straight-line distance of the first swing rod 401 will gradually shorten, thereby causing the sliding column 402 to move. Due to the restriction of the second slide groove 404, the two groups of sliding columns 402 will slide inside the two groups of second slide grooves 404 and make a straight-line motion, so that the sliding columns 402 gather inwardly. At the same time, the two groups of arc-shaped limit plates 403 will be synchronously driven to gather inwardly and contact the blades in the wind power generation body 2 to limit and wrap the wind power generation body 2. One part can limit and clamp the wind power generation body 2 to prevent it from rotating, one part can prevent the wind power generation body 2 from rotating and accidentally injuring the staff, and one part is to prevent the external wind from blowing the wind power generation body 2 to rotate, which is conducive to improving the detection efficiency of the wind power generation body 2 by the subsequent staff, and at the same time improves the safety of the wind power generation body 2 during detection;

[0049] In order to achieve the upper and lower limit of the blades in the wind power generation body 2, the following specific structure needs to be disclosed in detail, please refer to Figure 1-Figure 6 The lifting structure 500 includes a fixed block 501, which is fixedly connected to the outer ring surface of the sliding column 402. The fixed block 501 is rotatably connected to the second swing rod 502. The second swing rod 502 is rotatably connected to a limiting plate 503 on a side away from the fixed block 501. A lifting plate 504 for limiting the upper and lower positions of the blades is fixedly connected to the top of the limiting plate 503. A telescopic limiting column 505 is fixedly connected to the bottom of the lifting plate 504. The bottom of the telescopic limiting column 505 is fixedly connected to the table 1.

[0050] The fixed block 501, the second swing rod 502, the limit plate 503 and the lifting plate 504 are symmetrically arranged in two groups along the horizontal center of the table 1. The second swing rod 502 is a telescopic setting, the lifting plate 504 is a silicone setting, and the telescopic limit column 505 is a telescopic setting;

[0051] As for the second swinging rod 502, both ends are rotatably connected with the fixed block 501 and the limit plate 503, so as to make the second swinging rod 502 swing and better lift the lifting plate 504 to contact and limit the blades in the wind power generation body 2;

[0052] As for the overall structure of the lifting structure 500, two groups are set in order to make the lifting plate 504 more stable during the lifting process, prevent tilting, and help improve the subsequent contact and limit of the lifting plate 504 with the blades of the wind power generation body 2, and the second swing rod 502 and the telescopic limit column 505 are telescopically set, so as to make the lifting plate 504 more stable during the lifting and lowering process, and prevent the lifting plate 504 from shortening due to the shortening of the second swing rod 502 during the swinging process, so as to avoid the lifting plate 504 from being unable to contact the blades of the wind power generation body 2 in the future, which is conducive to improving the movement range of the lifting plate 504;

[0053] When the two groups of sliding columns 402 gather inward, they will synchronously drive the fixed block 501 to gather inward, and drive the second swing rod 502 to swing in the direction of the arc limit plate 403. At the same time, when the two groups of second swing rods 502 have swung and completed the extension and retraction inside the second swing rod 502, the second swing rod 502 continues to swing and drives the lifting plate 504 to move closer to the arc limit plate 403 until it contacts the blades in the wind power generation body 2. Since the wind power generation body 2 has been wrapped inside the arc limit plate 403, the lifting plate 504 can complete the upper and lower limit and clamping of the blades when it is lifted and contacts with the blades of the wind power generation body 2, thereby further improving the clamping effect of the blades of the wind power generation body 2, which is beneficial for subsequent staff to detect the wind power generation body 2.

[0054] Working principle: First, the staff places the impeller in the wind power generation body 2 in the round hole opened in the fixed plate 301, and turns on the external motor 6 to rotate the rotating plate 303 fixedly connected to the output shaft end in a positive direction of 60 degrees, and simultaneously drives the bottom of the limit block 302 to slide in the pentagonal groove opened on the surface of the rotating plate 303. At the same time, the limit block 302 is synchronously restricted by the pentagonal groove and the first groove 305, and the five groups of limit blocks 302 will gather inward (please refer to the specific state). Figure 8 ), at this time, the five groups of limit blocks 302 gather inwards, which will drive the three groups of clamping blocks 304 to gather inwards, so that they contact and clamp the outer annular surface of the impeller in the wind power generation body 2;

[0055] When the rotating disk 303 rotates forward by 60 degrees, the first swing rod 401 is synchronously driven to swing around the center of the sliding column 402. During the swinging process of the first swing rod 401, the straight-line distance of the first swing rod 401 is gradually shortened, which drives the sliding column 402 to slide in the second slide groove 404, so that the sliding column 402 gathers inward. At the same time, the two sets of arc-shaped limit plates 403 are synchronously driven to gather inward and contact the blades in the wind power generation body 2 to limit and wrap the wind power generation body 2.

[0056] When the two groups of sliding columns 402 gather inward, they will synchronously drive the fixed block 501 to gather inward, and drive the second swing rod 502 to swing in the direction of the arc limit plate 403. At the same time, when the two groups of second swing rods 502 have swung and completed the extension and retraction inside the second swing rod 502, the second swing rod 502 continues to swing and drives the lifting plate 504 to move closer to the arc limit plate 403 until it contacts the blades in the wind power generation body 2. Since the wind power generation body 2 has been wrapped inside the arc limit plate 403, the lifting plate 504 can complete the upper and lower limit and clamping of the blades when it is lifted and contacts the blades of the wind power generation body 2.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A positioning device for wind turbine blade inspection, comprising a table (1), characterized in that: A wind power generation body (2) is arranged on the top of the table (1); a clamping structure (300) is arranged on the surface of the table (1); limiting structures (400) are arranged on both sides of the clamping structure (300); and a lifting structure (500) is arranged on the top of the limiting structure (400); The wind wheel of the wind power generation body (2) is clamped and protected by the clamping structure (300), and the limiting structure (400) is driven inward to limit and protect the blades of the wind power generation body (2), and at the same time, the limiting structure (400) is driven upward to clamp the blades of the wind power generation body (2).

2. A wind turbine blade detection positioning device according to claim 1, characterized in that: An external motor (6) is fixedly connected to the bottom of the table (1); a rotating shaft fixed to the output shaft end of the external motor (6) passes through the table (1) and is fixedly connected to the bottom of the clamping structure (300).

3. A wind turbine blade detection positioning device according to claim 1, characterized in that: The clamping structure (300) comprises a fixed plate (301), the fixed plate (301) is fixedly connected to the surface of the table (1), the surface of the fixed plate (301) is respectively provided with first sliding grooves (305), the fixed plate (301) is rotatably connected to a rotating plate (303) inside, the surface of the rotating plate (303) is slidably connected to a limit block (302), the surface of the rotating plate (303) is provided with a pentagonal groove that is mutually compatible with the limit block (302), the end of the limit block (302) away from the rotating plate (303) is fixedly connected to a clamping block (304), and the surface of the limit block (302) is mutually compatible with the first sliding groove (305).

4. A wind turbine blade detection positioning device according to claim 3, characterized in that: There are five groups of first slide grooves (305) opened on the surface of the fixed plate (301), and each group of the first slide grooves (305) is placed with five groups of limit blocks (302). The clamping block (304) is made of silicone, and the inner side of the clamping block (304) is wavy.

5. A wind turbine blade detection positioning device according to claim 1, characterized in that: The limiting structure (400) comprises a first swinging rod (401), the first swinging rod (401) being rotatably connected to the bottom of the rotating disk (303), a side of the first swinging rod (401) away from the rotating disk (303) being rotatably connected to a sliding column (402), a top of the sliding column (402) being fixedly connected to an arc-shaped limiting disk (403) for clamping a limiting blade, and an end of the sliding column (402) away from the arc-shaped limiting disk (403) being slidably connected to a second sliding groove (404), and the second sliding groove (404) being provided on the surface of the table (1).

6. A wind turbine blade detection positioning device according to claim 5, characterized in that: The first swing rod (401), the sliding column (402), the arc-shaped limit plate (403) and the second slide groove (404) are symmetrically arranged in two groups along the horizontal center of the table (1); the surface of the arc-shaped limit plate (403) is arranged as an inclined surface, and the sliding column (402) and the second slide groove (404) are adapted to each other.

7. A wind turbine blade detection positioning device according to claim 1, characterized in that: The lifting structure (500) includes a fixed block (501), the fixed block (501) is fixedly connected to the outer ring surface of the sliding column (402), the fixed block (501) is rotatably connected to a second swing rod (502) inside, the second swing rod (502) is rotatably connected to a limiting plate (503) on a side away from the fixed block (501), the top of the limiting plate (503) is fixedly connected to a lifting plate (504) for limiting the upper and lower positions of the blades, the bottom of the lifting plate (504) is fixedly connected to a telescopic limiting column (505), and the bottom of the telescopic limiting column (505) is fixedly connected to the table (1).

8. A wind turbine blade detection positioning device according to claim 7, characterized in that: The fixed block (501), the second swing rod (502), the limiting plate (503) and the lifting plate (504) are symmetrically arranged in two groups along the horizontal center of the table (1); the second swing rod (502) is a telescopic setting, the lifting plate (504) is a silicone setting, and the telescopic limiting column (505) is a telescopic setting.

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