A fan wheel defect detection apparatus

Abstract

The application relates to the technical field of impeller detection, in particular to a fan impeller defect detection equipment; the equipment comprises a support, a fixed plate is installed on the support, a dyeing impeller is rotationally connected to the fixed plate, a bottom plate is installed on the support, an upper color impeller meshing with the dyeing impeller is arranged on the bottom plate, a hollow cavity is arranged in the upper color impeller, a plurality of discharge holes communicating with the internal cavity of the upper color impeller are uniformly arranged on the outer surface of the upper color impeller, a material suction layer is arranged on the periphery of the upper color impeller, and a sealing structure for controlling the discharge of the discharge holes is arranged in the upper color impeller; the problems that the manual visual detection mode is prone to cause the eyes of the person to be easily tired, the recognition rate is very low for tiny, light and shallow depressions or smooth transition curves, the defect missing detection risk is high, and the product quality consistency is difficult to guarantee are effectively solved; the application can effectively improve the detection efficiency and reduce the missing detection risk; the application has the beneficial effects of low cost, intuitiveness and rapid screening.

Description

Technical Field

[0001] This invention relates to the field of impeller inspection technology, and more specifically to a defect detection device for wind turbine impellers. Background Technology

[0002] In low-pressure gas conveying and pressurization systems such as aquaculture aeration, sewage aeration, and cement conveying, the reliability and stability requirements for Roots blowers are extremely high. Meanwhile, the quality of the blower impeller directly affects the blower's power, safety, operational stability, operability, and reliability. Therefore, rigorous quality testing of the impeller before the blower leaves the factory is essential for all manufacturers to ensure the quality of the products leaving the factory.

[0003] During the casting, forging, machining, and transportation processes, impellers are prone to surface defects such as dents, scratches, burrs, and sand holes. If these defects are not detected in time, they may cause airflow turbulence, sudden changes in local pressure, or even lead to the expansion of defects and the formation of cracks after the impeller is put into use. Therefore, rigorous surface defect inspection must be carried out on the impeller after production, which is a key step in ensuring the quality of the fan product.

[0004] Currently, traditional manual visual inspection is the most widely used preliminary screening method, relying on inspectors to observe the impeller surface with the naked eye or a magnifying glass to identify macroscopic defects. While this method has the advantages of low cost and ease of operation, it is not only labor-intensive and slow, but also heavily dependent on the operator's experience and concentration. The human eye is easily fatigued, and the recognition rate for small, shallow dents is very low, leading to a high risk of missed defects and making it difficult to guarantee product quality consistency. Furthermore, the inspection requires fixing and rotating the impeller, and existing inspection devices are not convenient for gripping the impeller under inspection, affecting inspection efficiency.

[0005] Therefore, the present invention provides a wind turbine impeller defect detection device to solve the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a wind turbine impeller defect detection device, which effectively solves the problem that manual visual inspection is prone to eye fatigue, has a low recognition rate for small, shallow dents or smooth bends, and thus has a high risk of missing defects and makes it difficult to guarantee product quality consistency.

[0007] The solution to the technical problem of the present invention is as follows: A wind turbine impeller defect detection device includes a support, a fixing plate installed on the support, a dyeing impeller rotatably connected to the fixing plate, a base plate installed on the support, the base plate being located below the fixing plate, a coloring impeller meshing with the dyeing impeller being provided on the base plate, a hollow cavity being provided inside the coloring impeller, and a plurality of discharge holes communicating with the internal cavity of the coloring impeller being evenly opened on the outer surface of the coloring impeller, a suction layer being provided around the coloring impeller, and a sealing structure for controlling the discharge from the discharge holes being provided inside the coloring impeller;

[0008] A sliding plate is slidably connected to the bracket. The sliding plate is located above the fixed plate, and a support frame is provided on both sides of the sliding plate. A U-shaped placement groove is opened on the side of the support frame away from the sliding plate. The placement groove is used to place the rotating shafts at both ends of the impeller to be tested. A fixed frame for fixing the rotating shafts at both ends of the impeller to be tested is slidably connected to both sides of the sliding plate. A limiting hole is opened on the end of the fixed frame away from the bracket for fitting onto the rotating shafts at both ends of the impeller to be tested.

[0009] The bracket is provided with a height control structure for controlling the position of the sliding plate. The height control structure controls the sliding plate to slide closer to the fixed plate, so that the impeller to be tested and the dyeing impeller mesh.

[0010] The dyeing impeller, the coloring impeller, and the impeller to be tested are driven by a circumferential drive structure.

[0011] The support is equipped with a defect detection device for detecting defects in the impeller to be tested.

[0012] Preferably, the sliding plate has sliding grooves on both sides, and the fixed frame is fixedly connected to the sliding shaft that is slidably connected to the sliding groove on the side near the bracket. The bracket has two guide grooves that cooperate with the sliding shaft on both sides. The guide groove is composed of an inclined tightening groove and a vertically arranged limiting groove, and the lower end of the tightening groove is connected to the upper end of the limiting groove.

[0013] Preferably, a sleeve that rotatably connects to the limiting hole and cooperates with the rotating shafts at both ends of the impeller to be tested is provided inside the sleeve. The sleeve is flared inside, with the side with the larger diameter closer to the support frame.

[0014] A drive plate is slidably connected to the side of the fixed frame near the support frame. A clamping ring is rotatably connected to the drive plate. A plurality of fixing rods that abut against the inner side wall of the sleeve are provided on the side of the clamping ring near the fixed frame. A compression spring is provided between the drive plate and the fixed frame.

[0015] Preferably, the fixing frame has multiple strip-shaped rubber clamping pads fixedly connected to one side of the rotating shaft at both ends of the impeller to be tested.

[0016] Preferably, the height control structure includes a threaded shaft rotatably connected to the bracket, the sliding plate and the threaded shaft are threadedly connected, and a height adjustment motor for driving the threaded shaft to rotate is fixedly connected to the bracket.

[0017] Preferably, the circumferential drive structure includes a drive gear fixedly connected to one side of the coloring impeller, the other side of the coloring impeller being fixedly connected to the shaft end of the drive motor, and the drive motor being fixedly connected to the bracket;

[0018] A rotating gear that meshes with the drive gear is fixedly connected to one side of the dyeing impeller;

[0019] One of the fixed frames is rotatably connected to a driven gear that cooperates with the dyeing impeller, and the driven gear is fixedly connected to the sleeve.

[0020] Preferably, the sealing structure includes a shielding plate slidably connected inside the coloring impeller, and the shielding plate has a plurality of communicating holes that communicate with the discharge hole;

[0021] A shielding spring is provided between the shielding plate and the coloring impeller;

[0022] One end of the shielding plate is fixedly connected to a control shaft, and the end of the control shaft away from the coloring impeller is fixedly connected to a control ring. A plurality of driven blocks are fixedly connected to the side of the control ring near the coloring impeller. A push ring is rotatably connected to the bracket, and a push block that cooperates with the driven block is fixedly connected to the side of the push ring near the control ring.

[0023] The bracket is provided with a fixing structure for fixing the push ring.

[0024] Preferably, the fixing structure includes a locking plate slidably connected to the bracket, the push ring has multiple fixing grooves, and the locking plate has multiple fixing teeth that cooperate with the fixing grooves.

[0025] An unlocking spring is provided between the locking plate and the bracket, and an electromagnet for attracting the locking plate is provided at the bottom of the bracket.

[0026] Preferably, a plurality of sealing strips for sealing the discharge hole are fixedly connected to the shielding plate.

[0027] Preferably, the dyeing impeller has a dyeing layer detachably connected to its outer side.

[0028] The beneficial effects of this invention are as follows:

[0029] This invention addresses the problems of easy eye fatigue and low recognition rate for small and shallow dents caused by manual visual inspection, which leads to a high risk of missed defects and difficulty in ensuring product quality consistency by adding a fixed plate, dyeing impeller, bottom plate, coloring impeller, discharge hole, suction layer, sliding plate, support frame, placement groove, fixed frame, limiting hole, and defect detection device.

[0030] By adding a slide groove, slide shaft, guide groove, sleeve, drive plate, clamping ring, fixing rod and compression spring, the rotating shafts at both ends of the impeller to be tested are fixed, thereby fixing the impeller to be tested. This setting facilitates fixing and replacing the impeller to be tested and improves testing efficiency.

[0031] By adding a masking plate, connecting hole, masking spring, control ring, driven block, pushing ring, pushing block, locking plate, fixing groove, fixing tooth, unlocking spring and electromagnet, the system can control the intermittent feeding when the coloring impeller rotates, so that the suction layer can evenly absorb the dyeing pigment and reduce pigment waste.

[0032] This invention smears the impeller to be inspected, thereby facilitating the observation of whether there are defects on the impeller surface. This can effectively improve the inspection efficiency and reduce the risk of missed detection. It has the beneficial effects of low cost, intuitiveness and rapid screening. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall assembly of the present invention;

[0035] Figure 2 This is a schematic diagram of the usage state of the present invention;

[0036] Figure 3 This is a schematic diagram of the mounting position of the fixing frame of the present invention;

[0037] Figure 4 This is a cross-sectional schematic diagram of the sleeve of the present invention;

[0038] Figure 5 This is a cross-sectional view of the sleeve of the present invention in use;

[0039] Figure 6 This is a schematic diagram of the fixing frame of the present invention;

[0040] Figure 7 This is a schematic diagram of the bracket of the present invention;

[0041] Figure 8 This is a schematic diagram of the combination of the dyeing impeller and the coloring impeller of the present invention;

[0042] Figure 9 This is a schematic diagram of the colored impeller of the present invention;

[0043] Figure 10 This is a cross-sectional schematic diagram of the colored impeller of the present invention;

[0044] Figure 11 This is a schematic diagram of the shielding plate of the present invention;

[0045] Figure 12 This is a schematic diagram of the cooperation between the control ring and the drive ring of the present invention;

[0046] Figure 13 This is a schematic diagram showing the installation positions of the driven block and the pushing block of the present invention;

[0047] Figure 14 This is a cross-sectional schematic diagram of the locking plate of the present invention.

[0048] In the diagram, 1. Support; 2. Fixing plate; 3. Dyeing impeller; 4. Base plate; 5. Coloring impeller; 7. Discharge hole; 8. Suction layer; 9. Sliding plate; 10. Support frame; 11. Placement groove; 12. Fixing frame; 13. Limiting hole; 14. Slide groove; 15. Slide shaft; 16. Guide groove; 161. Tightening groove; 162. Limiting groove; 17. Sleeve; 18. Drive plate; 19. Pressure ring; 20. Fixing rod; 21. Compression spring; 22. Rubber pressure pad. 23. Threaded shaft; 24. Height adjustment motor; 25. Drive gear; 26. Drive motor; 29. ​​Intermediate gear; 30. Driven gear; 31. Masking plate; 32. Connecting hole; 33. Masking spring; 34. Control shaft; 35. Control ring; 36. Driven block; 37. Push ring; 38. Push block; 39. Locking plate; 40. Fixing groove; 41. Fixing tooth; 42. Unlocking spring; 43. Electromagnet; 44. Sealing strip; 46. Defect detection device. Detailed Implementation

[0049] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0050] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0052] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0053] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0054] Example 1, refer to the appendix of the instruction manual. Figure 1-14A wind turbine impeller defect detection device includes a support 1, a fixed plate 2 mounted on the support 1, a dyeing impeller 3 rotatably connected to the fixed plate 2, a base plate 4 mounted on the support 1, the base plate 4 being located below the fixed plate 2, and a coloring impeller 5 meshing with the dyeing impeller 3 on the base plate 4. The coloring impeller 5 has a hollow cavity inside, which is used to fill liquid dye, which can be dyeing ink. The outer surface of the coloring impeller 5 has multiple discharge holes 7 evenly distributed, communicating with the internal cavity of the coloring impeller 5. The outer periphery of the coloring impeller 5 is provided with a suction layer 8, which is made of sponge material and is used to absorb the liquid dye flowing out through the discharge holes 7. The coloring impeller 5 has a sealing structure inside for controlling the discharge from the discharge holes 7. Multiple sealing strips 44 for sealing the discharge holes 7 are fixedly connected to a shielding plate 31.

[0055] The sealing structure includes a shielding plate 31 slidably connected inside the coloring impeller 5. The shielding plate 31 has multiple connecting holes 32 that communicate with the discharge hole 7. A shielding spring 33 is provided between the shielding plate 31 and the coloring impeller 5. In the initial state, the shielding plate 31 is pushed to the initial position by the action of the shielding spring 33. When the shielding plate 31 is in the initial position, the shielding plate 31 blocks the discharge hole 7. The sealing strip 44 is used to seal the discharge hole 7 to prevent liquid pigment from leaking out. This setting prevents the dyeing pigment inside the coloring impeller 5 from flowing out through the connecting holes 32 and the discharge hole 7.

[0056] One end of the masking plate 31 is fixedly connected to a control shaft 34. The end of the control shaft 34 away from the coloring impeller 5 is fixedly connected to a control ring 35. Multiple driven blocks 36 are fixedly connected to the side of the control ring 35 near the coloring impeller 5. A push ring 37 is rotatably connected to the bracket 1. A push block 38 that cooperates with the driven block 36 is fixedly connected to the side of the push ring 37 near the control ring 35.

[0057] The bracket 1 is provided with a fixing structure for fixing the push ring 37.

[0058] The fixing structure includes a locking plate 39 that is slidably connected to the bracket 1, a plurality of fixing grooves 40 are provided on the pushing ring 37, and a plurality of fixing teeth 41 that cooperate with the fixing grooves 40 are fixedly connected on the locking plate 39.

[0059] An unlocking spring 42 is provided between the locking plate 39 and the bracket 1. In the initial state, the unlocking spring 42 pushes the locking plate 39 upward, causing the fixing tooth 41 and the fixing groove 40 to separate. An electromagnet 43 is provided at the bottom of the bracket 1 to attract the locking plate 39. When the electromagnet 43 is energized, the electromagnet 43 attracts the locking plate 39 downward, compresses the unlocking spring 42, and causes the fixing tooth 41 to be inserted into the fixing groove 40, thereby fixing the pushing ring 37 in the current position and preventing rotation. When the electromagnet 43 is de-energized, the locking plate 39 is pushed upward by the unlocking spring 42, causing the fixing tooth 41 and the fixing groove 40 to separate.

[0060] A sliding plate 9 is slidably connected to the bracket 1. The sliding plate 9 is located above the fixed plate 2. A support frame 10 is provided on both sides of the sliding plate 9. A U-shaped placement groove 11 is opened on the side of the support frame 10 away from the sliding plate 9. The placement groove 11 is used to place the rotating shafts at both ends of the impeller to be tested. A fixed frame 12 for fixing the rotating shafts at both ends of the impeller to be tested is slidably connected to both sides of the sliding plate 9. A limiting hole 13 for fitting onto the rotating shafts at both ends of the impeller to be tested is opened at the end of the fixed frame 12 away from the bracket 1.

[0061] The bracket 1 is provided with a height control structure for controlling the position of the sliding plate 9. The height control structure controls the sliding plate 9 to slide closer to the fixed plate 2, so that the impeller to be tested and the dyeing impeller 3 mesh.

[0062] The height control structure includes a threaded shaft 23 rotatably connected to the bracket 1, a sliding plate 9 threadedly connected to the threaded shaft 23, and a height adjustment motor 24 fixedly connected to the bracket 1 for driving the rotation of the threaded shaft 23. In use, the height adjustment motor 24 controls the threaded shaft 23 to control the sliding plate 9 to slide up and down. A limit switch is installed at the lower end of the sliding plate 9. When the sliding plate 9 slides down to the limit position, the limit switch contacts the fixed plate 2, and the height adjustment motor 24 stops working.

[0063] In use, the rotating shafts at both ends of the impeller to be tested are placed on the placement groove 11, and then the fixing bracket 12 is slid towards the impeller to be tested so that the limiting hole 13 is fitted onto the rotating shafts at both ends of the impeller to be tested, thereby fixing the impeller to be tested inside the placement groove 11.

[0064] The dyeing impeller 3, the coloring impeller 5, and the impeller to be tested are driven by a circumferential drive structure;

[0065] The bracket 1 is equipped with a defect detection device 46 for detecting impellers to be inspected. It can be used to observe whether there are uncolored areas by manual visual inspection, and at the same time, it can use existing defect detection devices 46 to identify whether there are uncolored areas, thereby determining whether the impeller to be inspected has defects such as dents and scratches, thus improving the inspection efficiency.

[0066] In use, the rotating shafts at both ends of the impeller to be tested are placed on the placement groove 11. Then, the fixing bracket 12 is slid towards the impeller to be tested so that the limiting hole 13 is fitted onto the rotating shafts at both ends of the impeller to be tested, thereby fixing the impeller to be tested inside the placement groove 11. The height adjustment motor 24 controls the threaded shaft 23 to control the sliding plate 9 to slide up and down. A limit switch is installed at the lower end of the sliding plate 9. When the sliding plate 9 slides down to the limit position, the height adjustment motor 24 stops working. At this time, the impeller to be tested and the dyeing impeller 3 are engaged.

[0067] Then, the coloring impeller 5, dyeing impeller 3, and the impeller to be tested are rotated. The coloring impeller 5 and dyeing impeller 3 mesh, and the dyeing impeller 3 and the impeller to be tested mesh. When the coloring impeller 5 rotates, the electromagnet 43 is energized, attracting the locking plate 39 to move downwards, compressing the unlocking spring 42, causing the fixing tooth 41 to engage inside the fixing groove 40, thereby fixing the push ring 37 in the current position and preventing rotation. When the coloring impeller 5 rotates, the control shaft 34 rotates synchronously, thereby driving the control ring 35 to rotate synchronously. When the control ring 35 rotates... When in motion, the driven block 36 and the pushing block 38 come into contact, and the pushing ring 37 is fixed, thereby pushing the driven block 36 away from the coloring impeller 5 through the pushing block 38. At this time, the control ring 35 synchronously drives the control shaft 34 and the shielding plate 31 to move, compressing the shielding spring 33. The discharge hole 7 and the connecting hole 32 are connected, and the liquid dye flows into the suction layer 8 through the discharge hole 7 and the connecting hole 32. Then, when the coloring impeller 5 and the dyeing impeller 3 rotate, the dyeing pigment on the suction layer 8 is adsorbed onto the dyeing impeller 3.

[0068] After the dyeing impeller 3 is dipped in pigment, the pigment on the dyeing impeller 3 is applied to the impeller to be inspected. After rotating a few times, ensuring that the dyeing impeller 3 can coat the outer surface of the impeller to be inspected with pigment, the defect detection device 46 is activated to identify whether there are uncolored areas on the outer surface of the impeller to be inspected, thereby determining whether the impeller to be inspected has defects such as dents and scratches, and then stops rotating.

[0069] When the dyeing impeller 3 stops rotating, the electromagnet 43 is de-energized. At this time, under the action of the unlocking spring 42, the locking plate 39 is pushed upward, causing the fixed tooth 41 and the fixed groove 40 to separate. At this time, the pushing ring 37 can rotate freely. If the pushing block 38 and the driven block 36 are in contact when the coloring impeller 5 stops, the shielding plate 31 is pushed to the initial position under the action of the shielding spring 33, and the control shaft 34 is pulled to move closer to the coloring impeller 5. The pushing ring 37 can rotate adaptively at a certain angle, causing the pushing block 38 and the driven block 36 to disengage. This setting prevents the pushing block 38 and the driven block 36 from being in contact when the coloring impeller 5 stops. At this time, the connecting hole 32 and the discharge hole 7 on the shielding plate 31 are in a connected state, and the dyeing pigment can still flow out, improving the sealing effect.

[0070] The height adjustment motor 24 rotates the sliding plate 9 in the opposite direction to return to the initial position, and the fixing frame 12 returns to the initial position. At this time, the impeller that has been tested can be removed from the placement slot 11, and the pigment adhering to the surface can be cleaned.

[0071] In Embodiment 2, based on Embodiment 1, sliding grooves 14 are provided on both sides of the sliding plate 9. The fixed frame 12 is fixedly connected to the side of the support 1 with a sliding shaft 15 that is slidably connected to the sliding groove 14. Two guide grooves 16 that cooperate with the sliding shaft 15 are symmetrically arranged on both sides of the support 1. The guide groove 16 is composed of an inclined tightening groove 161 and a vertically arranged limiting groove 162, and the lower end of the tightening groove 161 and the upper end of the limiting groove 162 are connected.

[0072] In the initial state, the sliding plate 9 is at its highest point, and the sliding shaft 15 is at its highest point in the tightening groove 161. At this time, the fixing frame 12 is at its extreme position far away from the support frame 10. After the impeller to be tested is placed on the placement groove 11, the height adjustment motor 24 is started to push the sliding plate 9 downward. At this time, the sliding shaft 15 slides from the inside of the tightening groove 161 to the inside of the limiting groove 162. The fixing frame 12 is pushed towards the support frame 10 by the guide of the tightening groove 161 to fix the rotating shafts at both ends of the impeller to be tested.

[0073] The limiting hole 13 is rotatably connected to a sleeve 17 that cooperates with the rotating shafts at both ends of the impeller to be tested. The sleeve 17 is flared inside, with the side with the larger diameter close to the support frame 10.

[0074] A drive plate 18 is slidably connected to the side of the fixed frame 12 near the support frame 10. A clamping ring 19 is rotatably connected to the drive plate 18. A plurality of fixing rods 20 that abut against the inner side wall of the sleeve 17 are provided on the side of the clamping ring 19 near the fixed frame 12. A compression spring 21 is provided between the drive plate 18 and the fixed frame 12. In the initial state, the compression spring 21 pushes the drive plate 18 to move away from the fixed frame 12 to the limit position.

[0075] Multiple strip-shaped rubber pressure pads 22 are fixedly connected to one side of the mounting bracket 12 near the two ends of the impeller shaft to be tested.

[0076] In use, when the sliding shaft 15 slides from the tightening groove 161 into the limiting groove 162, the fixing frame 12 moves towards the bearing frame 10 to its limit position. At this time, the rotating shafts at both ends of the impeller to be tested are inserted into the sleeve 17. The drive plate 18 first contacts the bearing frame 10, and then the bearing frame 10 pushes the drive plate 18 towards the sleeve 17. At this time, the fixing rod 20 is pushed towards the inside of the sleeve 17. The end of the fixing rod 20 away from the drive plate 18 contacts the inclined surface of the inner wall of the sleeve 17. Guided by the inner wall of the sleeve 17, the fixing rod 20 is pressed towards the rotating shafts at both ends of the impeller to be tested until the end of the fixing rod 20 away from the drive plate 18 is tightly fitted with the rotating shaft of the impeller to be tested. At this time, the rubber pressing pad 22 is tightly fitted with the rotating shaft of the impeller to be tested and produces a certain deformation to protect the rotating shaft of the impeller to be tested. At the same time, it can press the rotating shaft of the impeller to be tested so that when the sleeve 17 is rotated, the impeller to be tested can rotate synchronously.

[0077] After use, push the sliding plate 9 upward. When the sliding plate 9 returns to its initial position, the sliding shaft 15 slides into the top of the tightening groove 161. At this time, the fixing frame 12 moves away from the support frame 10 to the limit position. When the fixing frame 12 and the support frame 10 separate, the drive plate 18 is pushed by the compression spring 21 to move away from the fixing frame 12 to the limit position, and the fixing rod 20 is pulled out from the inner wall of the sleeve 17.

[0078] In Example 3, based on Example 2, the circumferential drive structure includes a drive gear 25 fixedly connected to one side of the coloring impeller 5, and the other side of the coloring impeller 5 is fixedly connected to the shaft end of the drive motor 26. The drive motor is fixedly connected to the bracket 1. In use, the drive motor 26 drives the coloring impeller 5 to rotate, and the rotation of the coloring impeller 5 drives the drive gear 25 to rotate. At the same time, when the drive motor 26 starts, the electromagnet 43 is synchronously energized, and when the drive motor 26 stops, the electromagnet 43 is synchronously de-energized.

[0079] A rotating gear 29 that meshes with the drive gear 25 is fixedly connected to one side of the dyeing impeller 3;

[0080] One of the fixed brackets 12 is rotatably connected to a driven gear 30 that cooperates with the dyeing impeller 3, and the driven gear 30 is fixedly connected to the sleeve 17.

[0081] In use, when the sliding plate 9 moves downward, the fixed frame 12 slides towards the support frame 10 to the limit position. After the sliding plate 9 moves downward to the limit position, the driven gear 30 and the intermediate gear 29 mesh. When the drive motor 26 rotates, it drives the intermediate gear 29 to rotate through the drive gear 25. The intermediate gear 29 drives the driven gear 30 to rotate, thereby driving the dyeing impeller 3, the coloring impeller 5 and the impeller to be tested to rotate synchronously.

[0082] In Example 4, based on Example 1, a dyeing layer is detachably connected to the outer side of the dyeing impeller 3. The dyeing layer is easy to replace, thereby reducing the impact of excessive impurities on the dyeing effect after long-term use. The dyeing layer can be made of hard plastic material to prevent deformation after contact with the surface of the impeller to be tested, which would cause the pigment to be coated into the interior of the defective depressions and affect the test results.

[0083] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wind turbine impeller defect detection device, comprising a support frame (1), characterized in that, A fixing plate (2) is installed on the bracket (1), and a dyeing impeller (3) is rotatably connected to the fixing plate (2). A base plate (4) is installed on the bracket (1), and the base plate (4) is located below the fixing plate (2). A coloring impeller (5) that meshes with the dyeing impeller (3) is provided on the base plate (4). A hollow cavity is provided inside the coloring impeller (5), and multiple discharge holes (7) that communicate with the internal cavity of the coloring impeller (5) are evenly opened on the outer surface of the coloring impeller (5). A suction layer (8) is provided around the coloring impeller (5), and a sealing structure for controlling the discharge of the discharge holes (7) is provided inside the coloring impeller (5). A sliding plate (9) is slidably connected to the bracket (1). The sliding plate (9) is located above the fixed plate (2). A support frame (10) is provided on both sides of the sliding plate (9). A U-shaped placement groove (11) is opened on the side of the support frame (10) away from the sliding plate (9). The placement groove (11) is used to place the rotating shafts at both ends of the impeller to be tested. A fixed frame (12) for fixing the rotating shafts at both ends of the impeller to be tested is slidably connected to both sides of the sliding plate (9). A limiting hole (13) for fitting onto the rotating shafts at both ends of the impeller to be tested is opened at the end of the fixed frame (1) away from the bracket (1). The bracket (1) is provided with a height control structure for controlling the position of the sliding plate (9). The sliding plate (9) is controlled to slide closer to the fixed plate (2) by the height control structure, so that the impeller to be tested and the dyeing impeller (3) mesh. The dyeing impeller (3), the coloring impeller (5), and the impeller to be tested are driven by a circumferential drive structure; The bracket (1) is provided with a defect detection device (46) for detecting the impeller to be tested. The sealing structure includes a shielding plate (31) that is slidably connected inside the coloring impeller (5), and the shielding plate (31) has a plurality of connecting holes (32) that are connected to the discharge hole (7). A shielding spring (33) is provided between the shielding plate (31) and the coloring impeller (5). One end of the shielding plate (31) is fixedly connected to a control shaft (34), and the end of the control shaft (34) away from the coloring impeller (5) is fixedly connected to a control ring (35). A plurality of driven blocks (36) are fixedly connected to the side of the control ring (35) close to the coloring impeller (5). A push ring (37) is rotatably connected to the bracket (1), and a push block (38) that cooperates with the driven block (36) is fixedly connected to the side of the push ring (37) close to the control ring (35). The bracket (1) is provided with a fixing structure for fixing the push ring (37); The fixing structure includes a locking plate (39) slidably connected to the bracket (1), and a plurality of fixing grooves (40) are provided on the pushing ring (37). A plurality of fixing teeth (41) that cooperate with the fixing grooves (40) are fixedly connected on the locking plate (39). An unlocking spring (42) is provided between the locking plate (39) and the bracket (1), and an electromagnet (43) for attracting the locking plate (39) is provided at the bottom of the bracket (1).

2. The wind turbine impeller defect detection equipment according to claim 1, characterized in that, The sliding plate (9) has sliding grooves (14) on both sides. The fixed frame (12) is fixedly connected to the sliding shaft (15) which is slidably connected to the sliding groove (14) on the side near the bracket (1). The bracket (1) has two guide grooves (16) symmetrically arranged on both sides that cooperate with the sliding shaft (15). The guide groove (16) is composed of an inclined tightening groove (161) and a vertically arranged limiting groove (162). The lower end of the tightening groove (161) and the upper end of the limiting groove (162) are connected.

3. The wind turbine impeller defect detection equipment according to claim 2, characterized in that, The limiting hole (13) is rotatably connected to a sleeve (17) that cooperates with the rotating shafts at both ends of the impeller to be tested. The sleeve (17) is horn-shaped inside, with the side with the larger diameter close to the support frame (10). A drive plate (18) is slidably connected to the side of the fixed frame (12) near the support frame (10). A clamping ring (19) is rotatably connected to the drive plate (18). A plurality of fixing rods (20) that abut against the inner wall of the sleeve (17) are provided on the side of the clamping ring (19) near the fixed frame (12). A compression spring (21) is provided between the drive plate (18) and the fixed frame (12).

4. The wind turbine impeller defect detection equipment according to claim 3, characterized in that, The mounting bracket (12) has multiple strip-shaped rubber pressure pads (22) fixedly connected to one side of the shaft at both ends of the impeller to be tested.

5. The wind turbine impeller defect detection equipment according to claim 1, characterized in that, The height control structure includes a threaded shaft (23) rotatably connected to the bracket (1), the sliding plate (9) and the threaded shaft (23) are threadedly connected, and a height adjustment motor (24) for driving the threaded shaft (23) to rotate is fixedly connected to the bracket (1).

6. The wind turbine impeller defect detection equipment according to claim 3, characterized in that, The circumferential drive structure includes a drive gear (25) fixedly connected to one side of the coloring impeller (5), the other side of the coloring impeller (5) and the shaft end of the drive motor (26) are fixedly connected, and the drive motor is fixedly connected to the bracket (1). The dyeing impeller (3) is fixedly connected to one side with a rotating gear (29) that meshes with the drive gear (25). One of the fixed frames (12) is rotatably connected to a driven gear (30) that cooperates with the dyeing impeller (3), and the driven gear (30) is fixedly connected to the sleeve (17).

7. The wind turbine impeller defect detection equipment according to claim 1, characterized in that, The shielding plate (31) is fixedly connected with a plurality of sealing strips (44) for sealing the discharge hole (7).

8. The wind turbine impeller defect detection equipment according to claim 1, characterized in that, The dyeing impeller (3) has a dyeing layer detachably connected to its outer side.

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