Cleaning and positioning tool and device for wind power generation blade

Abstract

The invention discloses a cleaning and positioning tool and device for a wind power generation blade, and relates to the technical field of wind power generation blade cleaning, the cleaning and positioning tool comprises a frame body, and further comprises a contact rod and a positioning rod, the contact rod is rotationally arranged at one end of the frame body, and the position, close to the top end, of the contact rod extends downwards in an inclined mode; the first rolling wheel is arranged at the bottom end of the contact rod, the first rolling wheel is conical, and the side wall of the first rolling wheel is attached to the side wall of the hub where the blades are arranged; and the positioning wheel is rotationally connected to the other end of the contact rod. According to the sealing groove cleaning device, when the sealing groove is cleaned through the cleaning piece, the frame body can be fixed to the hub through clamping of the positioning wheel, the clamping piece and the clamping groove, so that the cleaning piece is stably positioned, and the manual operation intensity and the safety risk caused by energy concentration when operation is taken into consideration are reduced.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade cleaning technology, specifically to a cleaning and positioning fixture and device for wind turbine blades. Background Technology

[0002] In the process of replacing the pitch seal ring on wind turbine blades, it is necessary to first clean the sealing groove at the connection between the blade root and the hub. However, due to the high-altitude working environment and the large diameter of the sealing groove, the existing cleaning method has significant technical difficulties, as follows: I. Cleaning methods using automated cleaning devices (such as robots) Existing robotic cleaning devices are fixed to the tower surface by adsorption (magnetic suction or suction cups) and move and clean along the tower surface. However, the sealing groove is located at the root of the hub and blades. Traditional robotic cleaning methods lack an effective positioning mechanism, and their cleaning trajectory can change due to various factors (such as wind blowing and the presence of solid impurities). The specific location of the sealing groove at the root of the hub and blades, the curvature of the blade root, and the conical cross-section of the hub end make it even more difficult to determine the robot's trajectory. Furthermore, robotic cleaning methods are mostly used to "wipe" lightly attached substances on the surface, and it is even more difficult to clean the more firmly attached impurities and oil residue inside the sealing groove. II. Manual Cleaning Method It usually requires at least two operators working together. After the safety rope is wrapped around the root of the blade, operator one needs to manually push the pulley on the safety rope to make a circular motion along the root of the blade, scraping away most of the impurities inside the sealing groove using a rod, shovel, or towel. Then, operator two, while making the circular motion, inserts the sealing ring (a long, straight strip that is then inserted into the sealing groove and the excess is cut off) into the sealing groove for replacement. During the insertion process, a second cleaning is performed (mostly a light cleaning), and the sealing ring is tapped to make it fit the sealing groove. The challenges are as follows: Under the constraints of the working conditions (high altitude, large diameter of the sealing groove), operators need to exert considerable force to move the pulley on their safety rope when moving their position. The higher the physical exertion and time cost of each movement, the more limited the space on the wind turbine hub becomes, which further restricts the movement space for the operators. In addition, operators one and two need to share their work while maintaining their balance, which greatly increases the overall cleaning time and difficulty.

[0003] Based on this, the present invention designs a cleaning and positioning tool and device for wind turbine blades to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a cleaning and positioning tooling and device for wind turbine blades to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cleaning and positioning fixture for wind turbine blades, comprising a frame, and further comprising: A contact rod, which is rotatably mounted at one end of the frame and extends downward at an inclined position near the top. Roller 1 is located at the bottom of the contact rod. Roller 1 is conical and its sidewall is in contact with the sidewall of the hub where the blade is placed. The positioning wheel is rotatably connected to the other end of the contact rod; The clip is fixedly connected to the top of the contact rod; Connector, fixed to the top of the frame; The positioning plate slides elastically at the bottom of the connector. The card slot is located on the positioning plate; Torsion spring one is sleeved on the rotating shaft of the contact rod.

[0006] As a further aspect of the present invention, a connecting assembly is also included. The connecting assembly includes a sleeve, a round rod, and a plug. The sleeve is fixedly connected to the top of the connector. The round rod is disposed inside the sleeve. A positioning block is fixedly connected to the top of the round rod. The positioning block is a tapered shape that gradually expands from the top to the bottom. An unlocking component is disposed below the positioning block. The top and bottom of the unlocking component gradually taper towards the middle. The unlocking component is slidably connected to the round rod. A locking pin is elastically slidably connected to the bottom of the plug.

[0007] As a further aspect of the present invention, a protective component is also included. The protective component includes a collar, a second torsion spring, and a pusher. The collar rotates inside the sleeve, and a positioning groove is formed on the inner wall of the collar. The insert is slidably connected to the positioning groove. The round rod is fixedly connected to the collar, and the bottom end of the round rod passes through the connecting member and is rotatably connected to it. The second torsion spring is sleeved on the rotating shaft of the round rod, and the pusher is fixedly connected to the bottom end of the round rod. When the insert is inserted into the collar and the collar is rotated, the round rod will push the positioning plate away from the locking member through the pusher to disengage the locking groove from the locking member.

[0008] As a further embodiment of the present invention, a triggering unit is also included. The triggering unit includes a pressure block, which slides elastically inside the positioning groove. An elastic telescopic rod is fixedly connected to the bottom end of the pressure block. A triggering element is provided at the bottom end of the elastic telescopic rod. The triggering element slides elastically inside the sleeve and its bottom end penetrates the sleeve and the positioning plate. The bottom end of the triggering element is located on the side of the positioning plate away from the locking element.

[0009] As a further embodiment of the present invention, a fixed rod is rotatably connected to one bottom end of the roller, and the fixed rod is elastically slidably connected to the contact rod. Once the frame is in place, the clip engages with the slot, causing the first roller to fit tightly against the side wall of the hub.

[0010] As a further embodiment of the present invention, a second roller is rotatably connected to the frame, and the second roller is located between the positioning wheel and the first roller.

[0011] A cleaning device for wind turbine blades includes a cleaning and positioning fixture for wind turbine blades and a cleaning component, wherein the cleaning component is disposed on the side of the frame away from the contact rod.

[0012] As a further embodiment of the present invention, the frame and the cleaning component are elastically slidably connected.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention, when cleaning the sealing groove with the cleaning component, uses positioning wheels and locking devices to secure the frame to the hub, thus providing stable positioning of the cleaning component. This reduces the intensity of manual labor and the safety risks caused by the need for concentration while performing multiple tasks simultaneously. Furthermore, the trigger unit ensures that the fixing and unlocking of the frame to the hub cannot be performed before the insert cylinder enters the sleeve (i.e., before the safety rope, insert cylinder, and sleeve are integrated). This standardizes the operator's procedures and prevents safety hazards caused by incorrect operation leading to the frame falling. Attached Figure Description Figure 1 This is a schematic diagram showing the arrangement of the frame, blades, and hub of the present invention; Figure 2 This is a schematic diagram showing the connection relationship between the hub, blades and frame of the present invention; Figure 3 This is a schematic diagram showing the positional relationship between the frame, roller one, roller two, sleeve, and cleaning component of the present invention; Figure 4 This is a schematic diagram showing the state of the contact rod before it is connected to the wheel hub according to the present invention; Figure 5 This is a schematic diagram showing the state of the contact rod after it is connected to the wheel hub according to the present invention; Figure 6 This is a schematic diagram of the card and card slot after the card is engaged. Figure 7 This is a schematic diagram of the present invention when the insert is not inserted; Figure 8 This is a schematic diagram showing the locking pin of the present invention located at the bottom of the positioning block; Figure 9 This is a cross-sectional view of the present invention when the locking pin is at the bottom of the positioning block; Figure 10This is a schematic diagram showing the locking pin of the present invention descending below the unlocking component; Figure 11 This is a schematic diagram of the locking pin of the present invention rising from below the unlocking component; Figure 12 This is a schematic diagram showing the positional relationship between the round rod and the pushing member of the present invention; Figure 13 This is a structural diagram of the elastic telescopic rod of the present invention.

[0014] In the attached diagram, the components represented by each number are as follows: 101. Hub; 102. Blade; 103. Sealing groove; 1. Frame; 2. Contact rod; 3. Roller 1; 4. Positioning wheel; 5. Clip; 6. Connector; 7. Positioning plate; 8. Slot; 9. Torsion spring 1; 10. Sleeve; 11. Round rod; 12. Positioning block; 13. Unlocking component; 14. Insert; 15. Locking pin; 16. Collar; 17. Positioning groove; 18. Torsion spring 2; 19. Pushing component; 20. Pressing block; 21. Cleaning component; 22. Elastic telescopic rod; 23. Triggering component; 24. Fixing rod; 25. Roller 2; 26. First spring; 27. Second spring; 28. Third spring; 29. ​​Fourth spring; 30. Fifth spring; 31. Sixth spring; 32. Seventh spring. Detailed Implementation

[0015] Please see Figures 1-13 This invention provides a technical solution: a cleaning and positioning fixture for wind turbine blades, comprising a frame 1, a contact rod 2, a roller 3, a positioning wheel 4, a clamp 5, a connector 6, a positioning plate 7, a slot 8, and a torsion spring 9. The contact rod 2 is rotatably mounted at one end of the frame 1 and extends downward at an angle near its top. The roller 3 is located at the bottom end of the contact rod 2. The roller 3 is conical, and its sidewall is flush with the hub 101 on which the blade 102 is mounted (for ease of understanding, the hub, blade, and sealing groove are represented by 101, 102, and 103 respectively in the figure). The side wall of the device is fitted with the device. The positioning wheel 4 is rotatably connected to the other end of the contact rod 2 and is used for initial positioning after being inserted into the sealing groove 103. The clip 5 is fixedly connected to the top of the contact rod 2. The connector 6 is fixedly connected to the top of the frame 1. The positioning plate 7 slides on the bottom of the connector 6. A second spring 27 is fixedly connected between the positioning plate 7 and the connector 6. The slot 8 is opened on the positioning plate 7. The torsion spring 9 is sleeved on the rotating shaft of the contact rod 2. The second roller 25 is rotatably connected to the frame 1. The second roller 25 is located between the positioning wheel 4 and the first roller 3.

[0016] The wind turbine blade cleaning device includes a wind turbine blade cleaning and positioning fixture and a cleaning component 21, which is located at the other end of the frame 1.

[0017] The frame 1 is slidably connected to the cleaning component 21, and a first spring 26 is fixedly connected between the frame 1 and the cleaning component 21.

[0018] Please see Figures 1-6 As shown: Installation of frame 1: First, the operator secures the safety rope wrapped around the root of blade 102 (hereinafter referred to as "rope loop") and connects the operator's own safety rope to the rope loop. Align the positioning wheel 4 with the sealing groove 103, then move the frame 1 downwards. When the initially inclined contact rod 2 is... Figure 4 After descending to contact with the hub 101, the contact rod 2 will be forced to rotate around the rotation axis and compress the torsion spring 9 until the contact rod 2 is horizontal (as shown in the image). Figure 5 (As shown) The clip 5 rotates until it contacts the slot 8 and engages with the slot 8 (as shown). Figure 6 As shown, the left side wall of the connector 6 has an inclined surface. When the clip 5 contacts the inclined surface, it will first push the positioning plate 7 to move to the right. Then, after the clip 5 enters the slot 8, the elastic reset of the second spring 27 pushes the positioning plate 7 to reset, so that the clip 5 engages with the slot 8. At this time, the positioning wheel 4 is inside the sealing groove 103. At this time, the conical roller 3 will be in contact with the side wall of the hub 101. At this time, the positioning wheel 4 restricts the left and right movement of the frame 1. The roller 3 is in contact with the hub 101 and the positioning wheel 4 cannot swing inside the sealing groove 103, thereby restricting the up and down position of the frame 1, so that the frame 1 can be fixed on the hub 101. Because the cleaning component 21 is located at the end of the frame 1, when the positioning wheel 4 enters the sealing groove 103, the cleaning component 21 will adhere to the inner wall of the sealing groove 103 and be positioned. When the roller 1 3 and roller 25 rotate (rotation is achieved through electrical control, which is common knowledge in the prior art and will not be described in detail here), the frame 1 and the cleaning component 21 will rotate, thereby cleaning the inside of the sealing groove 103. However, in actual use, operator 1 can still make circular motions at the root of the blade 102 to clean and scrape off large solid impurities, while operator 2 only needs to undertake the subsequent insertion of the sealing strip. Furthermore, a first spring 26 is provided between the cleaning component 21 and the frame 1, which can press down on the cleaning component 21 to improve the scraping ability. The cleaning component 21 can be selected according to actual requirements, such as a brush, scraper, sponge layer, wire brush, or a combination of multiple types.

[0019] Disassembly of frame 1: After use, manually pull the positioning plate 7 to the right. During this process, the slot 8 disengages from the clip 5. When the frame 1 is lifted, the elastic action of the torsion spring 9 drives the contact rod 2 from... Figure 5 Towards Figure 4The transformation is performed as shown, thereby separating the frame 1 from the hub 101. After removing the frame 1, the remaining sealing strip is inserted into the sealing groove 103.

[0020] In this invention, when cleaning the sealing groove 103 with the cleaning component 21, the frame 1 can be fixed on the hub 101 by the engagement of the positioning wheel 4 and the locking component 5 with the locking groove 8, thereby stably positioning the cleaning component 21, reducing the labor intensity of manual work and the risk of falling due to distraction when working.

[0021] It also includes a connecting assembly, which includes a sleeve 10, a round rod 11, and a plug 14. The sleeve 10 is fixedly connected to the top of the connector 6. The round rod 11 is disposed inside the sleeve 10. A positioning block 12 is fixedly connected to the top of the round rod 11. The positioning block 12 is a tapered shape that gradually expands from the top to the bottom. An unlocking member 13 is disposed below the positioning block 12. The top and bottom of the unlocking member 13 gradually taper towards the middle position. The unlocking member 13 is slidably connected to the round rod 11. A locking pin 15 is slidably connected to the bottom of the plug 14. A third spring 28 is fixedly connected between the locking pin 15 and the inner wall of the plug 14.

[0022] For instructions on connecting the components, please refer to [link / reference]. Figure 7 , Figure 8 , Figure 10 and Figure 11 ; Connection process: Before starting work, the insert 14 is connected to a hook or buckle (the hook and buckle are known attempts in the prior art and will not be described in detail here) through the hole reserved at the top. Then the buckle is connected to the safety rope around the operator's waist so that the insert 14 is always on the safety rope of operator one or operator two. Before the operator climbs onto the hub 101, insert the insert 14 into the sleeve 10 (e.g., Figure 7 As shown), when the locking pin 15 contacts the positioning block 12, it gradually moves into the insertion cylinder 14 and compresses the third spring 28. When the locking pin 15 descends below the positioning block 12 (as shown), Figure 8 (As shown) It will be above the unlocking piece 13 and will remain there until the insert 14 is actively pressed down again; At this time, after the insert 14 enters the sleeve 10, the positioning block 12 will restrict its upward trend, so that it cannot be detached. Thus, before the frame 1 is fixed to the hub 101, the frame 1, safety rope and insert 14 can be integrated into a whole, thereby preventing the frame 1 from falling. When the frame 1 is fixed on the hub 101, the frame 1 is already firmly on the hub 101. At this time, the insert 14 can be taken out. Disassembly process: Press the insert 14 down again, moving it from above the unlocking member 13 to below it. After the locking pin 15 contacts the unlocking member 13, the locking pin 15 will also compress the third spring 28 and retract until the locking pin 15 descends below the unlocking member 13 (as shown). Figure 10 (As shown), then lift the insert 14 upwards. At this time, the locking pin 15 will push the unlocking piece 13 from below to slide upwards along the round rod 11 (as shown). Figure 11 As shown), when the unlocking part 13 moves to fit against the bottom of the positioning block 12, it will be unable to rise further. When the insert 14 is lifted upward, the locking pin 15 retracts into the insert 14 and passes over the unlocking part 13 and the positioning block 12 before disengaging from the sleeve 10. The roller 1 3 and roller 2 25 can be rotated directly to clean the inside of the sealing groove 103. It should be noted that both operators need to be equipped with inserters 14. Before disassembling the frame 1, the operator who is most convenient can insert the inserter 14 on their own safety rope into the sleeve 10 to make a connection, and then disassemble the frame 1. By setting the insert 14, the safety rope of the operator, the insert 14, and the frame 1 are all in one unit before the frame 1 is fixedly connected to the wheel hub 101 and before the frame 1 is removed from the wheel hub 101, thereby preventing the frame 1 from falling.

[0023] It also includes a protective assembly, which includes a collar 16, a second torsion spring 18, and a pusher 19. The collar 16 rotates inside the sleeve 10. A positioning groove 17 is provided on the inner wall of the collar 16. The insert 14 is slidably connected to the positioning groove 17. The round rod 11 is fixedly connected to the collar 16. The bottom end of the round rod 11 passes through the connector 6 and is rotatably connected to it. The second torsion spring 18 is sleeved on the rotating shaft of the round rod 11. The pusher 19 is fixedly connected to the bottom end of the round rod 11. When the insert 14 is inserted into the collar 16 and the collar 16 is rotated, the round rod 11 will push the positioning plate 7 away from the locking piece 5 through the pusher 19 so that the locking groove 8 is disengaged from the locking piece 5.

[0024] It also includes a triggering unit, which includes a pressure block 20 that slides inside the positioning groove 17. A fourth spring 29 is fixedly connected between the pressure block 20 and the inner wall of the positioning groove 17. An elastic telescopic rod 22 is fixedly connected to the bottom end of the pressure block 20 (the elastic telescopic rod 22 is not common knowledge in the prior art, or may be as follows). Figure 13 The structure consists of sleeve rod 1 2201, sleeve rod 2202, and fifth spring 30 (the working process will not be described in detail here). The bottom end of the elastic telescopic rod 22 is provided with a trigger 23. The trigger 23 slides inside the sleeve 10 and its bottom end passes through the sleeve 10 and the positioning plate 7. A sixth spring 31 is fixedly connected between the trigger 23 and the inner wall of the sleeve 10. The bottom end of the trigger 23 is located on the side of the positioning plate 7 away from the clamp 5.

[0025] The working process of the protection components and triggering unit is as follows (please refer to the following text). Figures 6-13 ; The working process of the trigger unit: When the insert 14 is not inserted into the sleeve 10 (e.g.) Figure 7 As shown), the pressure block 20 is at the top under the action of the elastic telescopic rod 22 and the fourth spring 29. At this time, the sixth spring 31 will drive the trigger 23 to the top. At this time, the bottom end of the trigger 23 is on the right side of the positioning plate 7 and blocks the tendency of the positioning plate 7 to move to the right. After the insert 14 is inserted into the sleeve 10, the locking pin 15 is located below the positioning block 12 and is in contact with the bottom of the positioning block 12 due to the reaction force of the sixth spring 31 and the elastic telescopic rod 22. During insertion, the insert 14 presses down on the pressure block 20 and, through the elastic telescopic rod 22, presses down on the trigger 23 (the stiffness coefficient of the elastic telescopic rod 22 is greater than that of the sixth spring 31), causing the trigger 23 to be pressed down to its maximum extent. At this time, the bottom end of the trigger 23 will be pressed down to below the bottom end of the positioning plate 7 (e.g., Figure 6 As shown), and at this time, the distance from the right side of the positioning plate 7 to the trigger 23 is L1; That is, before the insert 14 is inserted into the sleeve 10, the bottom end of the trigger 23 is on the right side of the positioning plate 7. If the frame 1 is fixed on the hub 101 at this time, the positioning plate 7 will not be able to move when the clip 5 contacts the side wall of the positioning plate 7, causing the clip 5 and the slot 8 to not engage. Therefore, the safety rope, frame 1, and the insert 14 can only be fixed when they are inserted into the sleeve 10 and the safety rope, frame 1, and insert 14 are in a whole, thereby preventing the frame 1 from falling, standardizing the operator's operating procedures, and improving safety efficiency.

[0026] After the insert 14 is inserted into the sleeve 10, the safety rope, frame 1 and insert 14 are in a whole. Then fix the frame 1 to the hub 101 and then unlock the trigger unit.

[0027] The unlocking process of the trigger unit: Press the insert 14 down again to below the unlocking piece 13, and then lift the insert 14 up.

[0028] The protective component is used to prevent the frame 1 from detaching from the hub 101 when the insert 14 is not inside the sleeve 10, thereby preventing the frame 1 from detaching from the hub 101 before the safety rope, frame 1 and insert 14 are in a whole, thus preventing the frame 1 from falling, and standardizing the operating procedures. The work process is as follows: When inserting the insert 14 into the sleeve 10, it needs to be inserted into the collar 16 along the positioning groove 17. Then, after the bottom end of the trigger 23 is below the positioning plate 7, the insert 14 can be rotated and the collar 16 will rotate inside the sleeve 10. At this time, the round rod 11 will rotate with the collar 16, and the top end of the trigger 23 is ring-shaped. During the rotation, the bottom end of the elastic telescopic rod 22 will contact its top end. During the rotation of the round rod 11, the pusher 19 at its bottom end will push the positioning plate 7 to the right during the rotation to the right, thereby disengaging the positioning plate 7 from the clamp 5, causing the contact rod 2 to drive the roller 3 to rotate to the right, and thus causing the frame 1 to disengage from the hub 101. After the rotation stops, the torsion spring 18 drives the round rod 11 to reset.

[0029] The present invention, by setting the trigger unit, ensures that before the insert 14 enters the sleeve 10, that is, before the safety rope, insert 14 and sleeve 10 are in a whole, the work of fixing and unlocking the frame 1 and the hub 101 cannot be carried out, thereby standardizing the operator's operation steps and eliminating the safety hazard caused by the frame 1 falling due to incorrect operation.

[0030] A fixed rod 24 is rotatably connected to the bottom end of roller 3. The fixed rod 24 is slidably connected to the contact rod 2. A seventh spring 32 is fixedly connected between the fixed rod 24 and the contact rod 2. After the frame 1 is placed, the clip 5 engages with the slot 8, so that the roller 3 is in close contact with the side wall of the hub.

[0031] like Figure 3 As shown: By setting the fixing rod 24 and the seventh spring 32, when the frame 1 is fixed on the hub 101, the two can be elastically connected by compressing the seventh spring 32, so that the roller 3 can move close to the side wall of the hub 101.

Claims

1. A cleaning and positioning fixture for wind turbine blades, comprising a frame (1), characterized in that, Also includes: Contact rod (2), the contact rod (2) is rotatably mounted at one end of the frame (1) and extends downward at an angle near the top; Roller 1 (3) is located at the bottom of the contact rod (2). The roller 1 (3) is conical and its sidewall is in contact with the sidewall of the hub on which the blade is placed. The positioning wheel (4) is rotatably connected to the other end of the contact rod (2); The clip (5) is fixedly connected to the top of the contact rod (2); Connector (6) is fixed to the top of the frame (1); Positioning plate (7) slides elastically at the bottom of connector (6); Card slot (8) is provided on positioning plate (7); Torsion spring 1 (9) is sleeved on the rotating shaft of contact rod (2).

2. The cleaning and positioning fixture for wind turbine blades according to claim 1, characterized in that: It also includes a connecting component, which includes a sleeve (10), a round rod (11) and a plug (14). The sleeve (10) is fixedly connected to the top of the connector (6). The round rod (11) is disposed inside the sleeve (10). A positioning block (12) is fixedly connected to the top of the round rod (11). The positioning block (12) is a cone that gradually expands from the top to the bottom. An unlocking component (13) is disposed below the positioning block (12). The top and bottom of the unlocking component (13) are both gradually narrowed towards the middle position. The unlocking component (13) is slidably connected to the round rod (11). A locking pin (15) is elastically slidably connected to the bottom of the plug (14).

3. The cleaning and positioning fixture for wind turbine blades according to claim 2, characterized in that: It also includes a protective component, which includes a collar (16), a second torsion spring (18), and a pusher (19). The collar (16) rotates inside the sleeve (10). The inner wall of the collar (16) is provided with a positioning groove (17). The insert (14) is slidably connected to the positioning groove (17). The round rod (11) is fixedly connected to the collar (16). The bottom end of the round rod (11) passes through the connector (6) and is rotatably connected to it. The second torsion spring (18) is sleeved on the rotating shaft of the round rod (11). The pusher (19) is fixedly connected to the bottom end of the round rod (11). When the insert (14) is inserted into the collar (16) and the collar (16) is rotated, the round rod (11) will push the positioning plate (7) away from the clamp (5) through the pusher (19) so that the clamp (8) is disengaged from the clamp (5).

4. The cleaning and positioning fixture for wind turbine blades according to claim 3, characterized in that: It also includes a triggering unit, which includes a pressure block (20) that slides elastically inside the positioning groove (17). The bottom end of the pressure block (20) is fixedly connected to an elastic telescopic rod (22). The bottom end of the elastic telescopic rod (22) is provided with a trigger element (23). The trigger element (23) slides elastically inside the sleeve (10) and its bottom end penetrates the sleeve (10) and the positioning plate (7). The bottom end of the trigger element (23) is located on the side of the positioning plate (7) away from the clamp (5).

5. The cleaning and positioning fixture for wind turbine blades according to claim 4, characterized in that: The bottom end of the roller (3) is rotatably connected to a fixed rod (24), and the fixed rod (24) is elastically slidably connected to the contact rod (2); After the frame (1) is placed, the clip (5) engages with the slot (8), so that the roller (3) is in close contact with the side wall of the hub.

6. The cleaning and positioning fixture for wind turbine blades according to claim 5, characterized in that: A second roller (25) is rotatably connected to the frame (1), and the second roller (25) is located between the positioning wheel (4) and the first roller (3).

7. A cleaning device for wind turbine blades, comprising the cleaning and positioning fixture for wind turbine blades as described in claim 6 and a cleaning component (21), wherein the cleaning component (21) is disposed on the side of the frame (1) away from the contact rod (2).

8. A cleaning device for wind turbine blades according to claim 7, characterized in that, Its features are: The frame (1) and the cleaning component (21) are elastically slidably connected.

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