A fluorescent penetrant detection device for aircraft engine blades and a method for using the same

Abstract

The present invention discloses an aerospace engine blade fluorescent penetration detection device and a use method in the technical field of aerospace engine blade detection, comprising a mounting shell, wherein the inner wall of the mounting shell is rotatably connected to a fixing cylinder; during the detection process, the present invention uses a suction nozzle to suck and fix the aerospace engine blade, which is beneficial to suck and fix the arc-shaped engine blade on the one hand, so as to avoid the engine blade from shaking during the detection process and affecting the detection; on the other hand, it avoids the clamping of the engine blade by the clamping parts, which is beneficial to enable the entire surface of the engine blade to be completely detected, and avoids the use of the clamping parts causing the engine blade edge to be blocked, which cannot be completely detected and affects the quality of the produced engine blades; and the engine is automatically flipped and fixed by docking the fixing cylinder with the mounting groove on the switching cylinder, without the need for manual disassembly and assembly, which is beneficial to reducing the manual workload and can reduce the damage to the engine blade during disassembly and assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft engine blade detection, and in particular to an aircraft engine blade fluorescent penetration detection device and a use method thereof. Background Art

[0002] In the manufacturing industry, defects such as tiny cracks on the surface of raw materials and parts that are difficult to see with the naked eye often make the product quality fail to meet customer requirements. To detect these surface defects, the industry mostly uses fluorescent penetrant testing technology. Its principle is to use a certain method to make the fluorescent penetrant penetrate into the cracks on the surface of the workpiece to be tested, and then remove the penetrant and moisture on the surface of the workpiece to be tested through cleaning and drying, and then apply dry imaging powder on the surface of the workpiece to be tested. Under the capillary action, the penetrant in the crack is adsorbed to the surface of the workpiece to be tested, and then the defect detection is carried out under a black light.

[0003] In the prior art, when using the fluorescent penetration method to inspect aircraft engine blades, because aircraft engine blades are curved and thin, when placed on a platform for inspection, the aircraft engine blades will shake, affecting normal inspection. During clamping inspection, the clamps usually cover the edge of the surface of the aircraft engine blades, resulting in the edge being unable to be detected. Therefore, manual inspection is usually required during inspection, which increases the amount of manual labor. In addition, both sides of the aircraft engine blades need to be inspected. When manually inspecting a large number of aircraft engine blades at a time, confusion is easy to occur, resulting in missed inspections or repeated inspections.

[0004] Based on this, the present invention designs an aircraft engine blade fluorescent penetration detection device and a method of use to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an aircraft engine blade fluorescent penetrant detection device and a method of use, so as to solve the problem proposed in the above background technology that when the existing technology uses the fluorescent penetrant method to detect aircraft engine blades, because the aircraft engine blades are curved and thin, when placed on the platform for detection, the aircraft engine blades will shake, affecting normal detection. During clamping detection, the clamping parts usually cover the edge part of the surface of the aircraft engine blade, resulting in the edge part cannot be detected. Therefore, manual inspection is usually required during inspection, which increases the amount of manual labor. In addition, both sides of the aircraft engine blades need to be inspected. When manually inspecting a large number of aircraft engine blades at a time, confusion is easy to occur, resulting in missed inspections or repeated inspections.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A fluorescent penetration detection device for aircraft engine blades, comprising a mounting shell, wherein the inner wall of the mounting shell is rotatably connected to a fixed cylinder, one end of the fixed cylinder is fixedly connected to a first gear ring, a driving motor is fixedly connected to a surface of the mounting shell on one side close to the first gear ring, and the end of the rotating shaft of the driving motor is fixedly connected to a rotating gear after passing through the mounting shell, and the rotating gear is meshed with the first gear ring, and the inner wall of the mounting shell is provided with a sweeping brush, a first spray box capable of spraying fluorescent agent, a wiping cotton and a second spray box capable of spraying developer in sequence along the rotation direction of the fixed cylinder, a first detection end is fixedly connected to the inner wall surface of the mounting shell, and the first detection end can detect the fluorescent agent floating on the surface of the developer, a fixing mechanism capable of adsorbing and fixing the engine blade is provided on the surface of the fixed cylinder, and a flipping mechanism capable of flipping the engine blade after the single-side detection is completed is provided inside the mounting shell, and a selection mechanism is provided inside the fixing mechanism and the flipping mechanism, and the selection mechanism can discharge the engine blades that fail the detection from the inside of the mounting shell, and the selection mechanism is triggered by the first detection end;

[0007] As a further solution of the present invention, the fixing mechanism includes a fixing rod and a plurality of mounting grooves, the fixing rod is fixedly connected to the inner wall surface of the mounting shell, the fixing rod is in the middle position of the fixing cylinder, the surface of the fixing rod is fixedly connected to a driving disk, the surface of the driving disk is provided with an annular driving groove, a plurality of the mounting grooves are provided at equal angles on the surface of the fixing cylinder, a portion of the driving groove protrudes outward, the bottom of the mounting groove is a curved surface and can fit with the surface of the engine blade, a plurality of the bottoms of the inner walls of the mounting grooves are fixedly connected to soft suction nozzles, the bottom of the suction nozzles is fixedly connected to an air suction cylinder, the bottom of the air suction cylinder passes through the fixing cylinder and extends to the inside of the fixing cylinder, a piston is slidably connected to the inside of the suction cylinder, the bottom of the piston extends to the position of the driving disk, the bottom of the piston is fixedly connected to a sliding rod, and the sliding rod slides in the driving groove;

[0008] As a further solution of the present invention, the flip mechanism includes a switching cylinder, the switching cylinder is the same as the fixed cylinder, and the mounting shell is provided with a sweeping brush, a first spray box capable of spraying fluorescent agent, a wiping cotton and a second spray box capable of spraying developer, which are the same as those of the fixed cylinder, around the switching cylinder corresponding to the mounting shell. The switching cylinder is rotatably connected in the mounting shell, and a second gear ring is fixedly connected to one end of the switching cylinder close to the first gear ring, the second gear ring is meshed with the first gear ring, the switching cylinder is in contact with the fixed cylinder, the switching cylinder and the fixed cylinder can rotate synchronously, the switching cylinder is provided with a fixing mechanism that is the same as that of the fixed cylinder, the mounting groove on the switching cylinder and the mounting groove on the fixed cylinder are opposite to each other at the contact point between the switching cylinder and the fixed cylinder, and the protrusions of the two driving grooves are both oriented toward the contact point between the switching cylinder and the fixed cylinder;

[0009] As a further solution of the present invention, the selection mechanism includes two first grooves, the two first grooves are respectively opened on the surface of the driving disk inside the fixed cylinder and the switching cylinder, the driving groove is partially covered by the first groove, a sliding block is slidably connected in the first groove, a sliding rail is opened on the surface of the sliding block, and the sliding rail can connect the driving groove, a first telescopic cylinder is fixedly connected between the sliding block inside the fixed cylinder and the inner wall of the first groove, the first telescopic cylinder is triggered by the first detection end, a second telescopic cylinder is fixedly connected between the sliding block inside the switching cylinder and the inner wall of the first groove, a second detection end is fixedly connected to the inner wall surface of the mounting shell, the second telescopic cylinder is triggered by the second detection end, a first discharge plate is fixedly connected to the bottom of the inner wall of the mounting shell corresponding to the first detection end, and a second discharge plate is fixedly connected to the bottom of the inner wall of the mounting shell corresponding to the second detection end;

[0010] As a further solution of the present invention, the inner wall surface of the mounting shell is rotatably connected with a rotating roller corresponding to the fixed cylinder and the switching cylinder position, the wiping cotton is wound on the surface of the rotating roller, the front and rear sides of the inner wall of the mounting shell are provided with a first slide groove, two winding rollers are provided in the first slide grooves, and the winding rollers are driven to rotate by an external driver, the inner wall of the first slide groove is fixedly connected with a first spring, the first spring contacts the winding roller, the wiping cotton is wound on the surface of the winding roller, the front and rear sides of the inner wall of the mounting shell are provided with a second groove, the inner walls of the two second grooves are rotatably connected with a retractable swing rod, the end of the swing rod extends to the wiping cotton position, and the two swing rods are away from the wiping cotton. The end protrudes outward, the sliding rod extends to the position of the inner wall surface of the installation shell, and the movement of the sliding rod will act on the swing rod, and the two swing rods are connected to a tensioning rod by rotating together near one end of the wiping cotton, and the tensioning rod can tension the wiping cotton downward, and the tensioning rod is between the rotating roller and the winding roller, and a second sliding groove is provided on the inner wall surface of the second groove, and the tensioning rod slides in the second sliding groove, and a second spring is fixedly connected to the inner wall of the second sliding groove near the rotating roller, and the second spring contacts the tensioning rod, and a limiting groove is provided on the inner wall of the installation shell, and the limiting groove is communicated with the second groove, and the limiting groove is elastically connected to the limiting rod by a third spring, and the limiting rod can limit the tensioning rod;

[0011] As a further solution of the present invention, a third slide groove is provided on the inner wall of the mounting shell, the sweeping brush is elastically slidably connected in the third slide groove through a fourth spring, a wavy toggle block is fixedly connected to one end of the sweeping brush, a plurality of first toggle plates arranged at equal angles are fixedly connected to the surface of the fixed cylinder, a second toggle plate is fixedly connected to the surface of the switching cylinder, and a yield groove is provided on both the fixed cylinder and the switching cylinder;

[0012] As a further solution of the present invention, the first spray box is fixedly connected to the inner wall surface of the mounting shell, a spray port is provided on the side of the first spray box close to the fixed cylinder, an adding pipe is connected to the mounting shell at a position corresponding to the first spray box, two partition plates are fixedly connected in the first spray box, one-way water outlets are provided on the surfaces of the two partition plates, an extrusion plate is slidably connected between the two partition plates, a fifth spring is connected between the extrusion plate and the inner wall of the mounting shell, a pressure rod is hinged on the inner wall surface of the mounting shell, an end of the pressure rod close to the first spray box passes through the first spray box and is slidably connected to the extrusion plate, an arc groove is provided on the surface of the first spray box corresponding to the end of the pressure rod, and the second spray box has the same internal structure as the first spray box;

[0013] As a further solution of the present invention, a plurality of L-shaped push rods are elastically connected to the plurality of mounting groove positions corresponding to the inner wall surface of the switching cylinder through a sixth spring, and the bottom of the push rod is arc-shaped, and one end of the push rod close to the inner wall of the switching cylinder penetrates the inner wall of the switching cylinder and extends into the mounting groove, and a fixing block is fixedly connected to the bottom of the push rod corresponding to the inner wall of the mounting shell, and the fixing block acts on the push rod, and a third discharge plate is fixedly connected to the inner wall of the mounting shell corresponding to the fixed block position, and the third discharge plate is located outside the switching cylinder;

[0014] A method for using a fluorescent penetrant detection device for aircraft engine blades, the specific steps of the method are as follows:

[0015] Step 1: First, place the aerospace engine blade on the fluorescence detection device and start the fluorescence detection device;

[0016] Step 2: The fluorescent detection device will then fix and detect the surface of one side of the engine blade;

[0017] Step 3: After the inspection is completed, the engine blade will be turned over and the back side will be inspected;

[0018] Step 4: The engine blades that have completed the final inspection will undergo subsequent processing or installation.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. During the detection process, the present invention uses a suction nozzle to suck and fix the aerospace engine blades. On the one hand, it is beneficial to suck and fix the arc-shaped engine blades to avoid the engine blades from shaking during the detection process, which affects the detection. On the other hand, it avoids the clamping of the engine blades by the clamping parts, which is beneficial to the entire surface of the engine blades to be completely detected, and avoids the use of clamping parts to cause the edges of the engine blades to be blocked, which cannot be completely detected and affects the quality of the produced engine blades. In addition, the engine is automatically flipped and fixed by docking the fixing cylinder with the mounting groove on the switching cylinder, and no manual disassembly and assembly are required, which is beneficial to reducing manual workload and can reduce damage to the engine blades during disassembly and assembly.

[0021] 2. The present invention sets a winding roller and a rotating roller so that the wiping cotton can be unidirectionally wound for wiping, which is beneficial to keep the wiping cotton clean each time it is wiped, and avoids the residue of fluorescent agent on the surface of the wiping cotton after the wiping cotton has wiped the engine blades once, resulting in the subsequent engine surface not being completely wiped, affecting the detection result, and using the tensioning rod to assist the winding roller to wind up the new wiping cotton, which is beneficial to quickly replace the wiping cotton, reduce the time for changing the winding, and avoid manual winding that may cause misoperation, thereby endangering the safety of workers.

[0022] 3. During the detection process of the present invention, when the fixed cylinder drives the engine blades to move to the sweeping brush position, the first toggle plate will act on the toggle block, and the sweeping brush will swing under the action of the toggle block and the fourth spring. The sweeping brush will fully sweep away the impurities on the surface of the engine blades, which is beneficial to remove impurities or floating dust on the surface of the engine blades, and avoid the impurities or floating dust on the surface of the engine blades cannot be completely removed, which will block the fluorescent agent and cause inaccurate detection results. When the switching cylinder rotates, the second toggle plate will rotate with it. When the first toggle plate and the second toggle plate move to the contact position between the fixed cylinder and the switching cylinder, the first toggle plate and the second swing plate will move into the give way groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a flow chart of the method of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the overall installation shell of the present invention after being cut open;

[0026] Figure 4 It is a schematic diagram of the overall structure of the present invention after being cut apart;

[0027] Figure 5 It is a schematic diagram of the structure inside the fixed cylinder and the switching cylinder in the present invention;

[0028] Figure 6for Figure 5 Schematic diagram of the structure at A in the middle;

[0029] Figure 7 for Figure 5 Schematic diagram of the structure at B in the middle;

[0030] Figure 8 It is a schematic diagram of the structure of the fixed cylinder in the present invention;

[0031] Fig. 9 It is a structural schematic diagram of the switching cylinder in the present invention;

[0032] Fig.10 It is a structural schematic diagram of the connection relationship between the mounting shell, the rotating roller, the wiping cotton and the winding roller in the present invention;

[0033] Fig.11 for Fig.10 Schematic diagram of the structure at C in the middle;

[0034] Fig.12 It is a schematic diagram of the structure inside the installation shell in the present invention;

[0035] Fig.13 It is a schematic diagram of the internal structure of the first liquid spray box and the second liquid spray box in the present invention;

[0036] Fig.14 for Fig.13 Schematic diagram of the structure at point D in the middle.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] Mounting shell 1, fixed cylinder 2, first gear ring 3, driving motor 4, rotating gear 5, sweeping brush 6, first spray box 7, wiping cotton 8, second spray box 9, first detection terminal 10, fixed rod 11, mounting groove 12, driving disk 13, driving groove 14, suction nozzle 15, suction cylinder 16, piston 17, sliding rod 18, switching cylinder 19, second gear ring 20, first groove 21, sliding block 22, sliding rail 23, first telescopic cylinder 24, second telescopic cylinder 25, second detection terminal 26, first discharge plate 27, second discharge plate 28, rotating roller 29, first Slide groove 30, winding roller 31, first spring 32, second groove 33, swing rod 34, tensioning rod 35, second slide groove 36, second spring 37, limit groove 38, third spring 39, limit rod 40, third slide groove 41, fourth spring 42, toggle block 43, first toggle plate 44, second toggle plate 45, give way groove 46, spray port 47, adding pipe 48, partition plate 49, one-way water outlet 50, extrusion plate 51, fifth spring 52, pressure rod 53, arc groove 54, sixth spring 55, push rod 56, fixed block 57, third discharge plate 58. DETAILED DESCRIPTION

[0039] See also Figure 1-14 The present invention provides a technical solution: a fluorescent penetration detection device for aircraft engine blades, comprising a mounting shell 1, a fixed cylinder 2 is rotatably connected to the inner wall of the mounting shell 1, a first gear ring 3 is fixedly connected to one end of the fixed cylinder 2, a driving motor 4 is fixedly connected to the surface of the mounting shell 1 near the first gear ring 3, a rotating shaft end of the driving motor 4 passes through the mounting shell 1 and is fixedly connected to a rotating gear 5, the rotating gear 5 is meshed with the first gear ring 3, and a sweeping brush 6, a first spray box 7 capable of spraying fluorescent agent, a wiping cotton 8 and a first spray box 9 are sequentially provided on the inner wall of the mounting shell 1 along the rotation direction of the fixed cylinder 2. A second spray box 9 capable of spraying a developer, a first detection terminal 10 is fixedly connected to the inner wall surface of the mounting shell 1, the first detection terminal 10 can detect the fluorescent agent floating on the surface of the developer, a fixing mechanism capable of adsorbing and fixing the engine blades is provided on the surface of the fixing cylinder 2, a flipping mechanism capable of flipping the engine blades after the single-side detection is completed is provided inside the mounting shell 1, a selection mechanism is provided inside the fixing mechanism and the flipping mechanism, the selection mechanism can discharge the engine blades that fail the detection from the inside of the mounting shell 1, and the selection mechanism is triggered by the first detection terminal 10;

[0040] The fixing mechanism includes a fixing rod 11 and a plurality of mounting grooves 12. The fixing rod 11 is fixedly connected to the inner wall surface of the mounting shell 1. The fixing rod 11 is in the middle position of the fixing cylinder 2. A driving disk 13 is fixedly connected to the surface of the fixing rod 11. An annular driving groove 14 is provided on the surface of the driving disk 13. A plurality of mounting grooves 12 are provided at equal angles on the surface of the fixing cylinder 2. Part of the driving groove 14 protrudes outward. The bottom of the mounting groove 12 is a curved surface and can fit with the surface of the engine blade. A soft suction nozzle 15 is fixedly connected to the bottom of the inner wall of the plurality of mounting grooves 12. The bottom of the suction nozzle 15 is fixedly connected to an air suction cylinder 16. The bottom of the air suction cylinder 16 penetrates the fixing cylinder 2 and extends to the inside of the fixing cylinder 2. A piston 17 is slidably connected to the inside of the air suction cylinder 16. The bottom of the piston 17 extends to the position of the driving disk 13. A sliding rod 18 is fixedly connected to the bottom of the piston 17. The sliding rod 18 slides in the driving groove 14.

[0041] The flip mechanism includes a switching cylinder 19, which is the same as the fixed cylinder 2, and the mounting shell 1 is provided with a sweeping brush 6, a first spray box 7 capable of spraying fluorescent agent, a wiping cotton 8 and a second spray box 9 capable of spraying developer, which are the same as those of the fixed cylinder 2, around the switching cylinder 19 corresponding to the mounting shell 1. The switching cylinder 19 is rotatably connected in the mounting shell 1, and a second gear ring 20 is fixedly connected to one end of the switching cylinder 19 close to the first gear ring 3, and the second gear ring 20 is meshed with the first gear ring 3. The switching cylinder 19 is in contact with the fixed cylinder 2, and the switching cylinder 19 and the fixed cylinder 2 can rotate synchronously. The interior of the switching cylinder 19 is provided with a fixing mechanism that is the same as that of the interior of the fixed cylinder 2, and the mounting groove 12 on the switching cylinder 19 and the mounting groove 12 on the fixed cylinder 2 are opposite to each other at the contact point between the switching cylinder 19 and the fixed cylinder 2, and the protrusions of the two driving grooves 14 are both oriented toward the contact point between the switching cylinder 19 and the fixed cylinder 2;

[0042] The selection mechanism includes two first grooves 21, which are respectively provided on the surface of the driving disk 13 inside the fixed cylinder 2 and the switching cylinder 19, and the driving groove 14 is partially covered by the first groove 21. A sliding block 22 is slidably connected in the first groove 21, and a sliding rail 23 is provided on the surface of the sliding block 22. The sliding rail 23 can connect the driving groove 14. A first telescopic cylinder 24 is fixedly connected between the sliding block 22 inside the fixed cylinder 2 and the inner wall of the first groove 21, and the first telescopic cylinder 24 is triggered by the first detection terminal 10. A second telescopic cylinder 25 is fixedly connected between the sliding block 22 inside the switching cylinder 19 and the inner wall of the first groove 21. A second detection terminal 26 is fixedly connected to the inner wall surface of the mounting shell 1, and the second telescopic cylinder 25 is triggered by the second detection terminal 26. A first discharge plate 27 is fixedly connected to the bottom of the inner wall of the mounting shell 1 corresponding to the first detection terminal 10, and a second discharge plate 28 is fixedly connected to the bottom of the inner wall of the mounting shell 1 corresponding to the second detection terminal 26.

[0043] Before inspecting the aerospace engine blades, it is necessary to use an external lifting and loading device to place the engine blades from the bottom of the fixed cylinder 2 upward into the installation groove 12, and then start the detection device. The driving motor 4 will drive the fixed cylinder 2 to rotate by rotating the gear 5 and the first gear ring 3, and the suction cylinder 16 and the piston 17 will rotate together. The sliding rod 18 will slide in the driving groove 14 under the action of the piston 17. The sliding rod 18 will drive the piston 17 to move to the outside of the suction cylinder 16 under the action of the driving groove 14, and the engine blades will be sucked by the suction nozzle 15. On the one hand, it is conducive to sucking and fixing the arc-shaped engine blades to avoid the engine blades from shaking during the detection process, affecting the detection, and on the other hand, it avoids the clamping parts from affecting the engine blades. Clamping is conducive to the complete detection of the entire surface of the engine blade, avoiding the use of clamps that may block the edge of the engine blade, making it impossible to fully detect, and affecting the quality of the produced engine blades. In the process of the fixed cylinder 2 rotating with the engine blade, the sweeping brush 6 will sweep the surface of the engine blade to avoid impurities on the surface of the engine blade that will block the fluorescent agent sprayed subsequently, resulting in the fluorescent agent being unable to contact the engine blade and affecting the detection result. Subsequently, the first spray box 7 will spray the fluorescent agent, which will cover the surface of the engine blade, and then the wiping cotton 8 will wipe the fluorescent agent on the surface of the engine blade. Finally, the second spray box 9 will spray the developer, which will cover the surface of the engine blade. When the engine blade moves to the first When the detection end 10 is in position, the sliding rod 18 will slide into the slide rail 23, and the first detection end 10 will detect the developer on the surface of the engine. When the first detection end 10 detects that there is fluorescent agent on the surface of the developer, the first telescopic cylinder 24 will shrink, and the sliding block 22 will move toward the edge of the driving disk 13 in the first groove 21, and the piston 17 will move toward the inside of the suction cylinder 16, and the suction nozzle 15 will be separated from the engine blades. The separated engine blades will fall onto the surface of the first discharge plate 27 and slide along the surface of the first discharge plate 27, and then the first telescopic cylinder 24 will return to its original state. When the first detection end 10 does not detect the emergence of fluorescent agent, the sliding rod 18 will slide over the slide rail 23, and then when the engine blades move with the fixed When the fixed cylinder 2 moves to the contact position between the fixed cylinder 2 and the switching cylinder 19, the two mounting grooves 12 will dock, and the switching cylinder 19 will rotate synchronously under the action of the first gear ring 3 and the second gear ring 20, and the sliding rod 18 in the fixed cylinder 2 will gradually slide to the protrusion of the driving groove 14, and the suction nozzle 15 will be separated from the engine blades, and the engine blades will fall into the mounting groove 12 on the surface of the switching cylinder 19, and the sliding rod 18 inside the switching cylinder 19 will gradually slide downward from the protrusion of the driving groove 14, and the suction nozzle 15 will suck the engine blades, thereby realizing flipping. The engine is automatically flipped and fixed by docking the two mounting grooves 12, and no manual disassembly and assembly is required, which is conducive to reducing manual workload and can reduce damage to the engine blades during disassembly and assembly.Then the sweeping brush 6, the first spray box 7, the wiping cotton 8 and the second spray box 9 will perform the same steps as above on the engine blades as the switching cylinder 19 rotates. Then the second detection end 26 will detect the engine blades. When the second detection end 26 detects that there is fluorescent agent floating on the surface of the developer, the second cylinder will shrink, the suction nozzle 15 will be separated from the engine blades, and the engine blades will fall onto the surface of the second discharge plate 28 and slide down. When the second detection end 26 does not detect that there is fluorescent agent floating on the surface of the developer, both sides of the engine blades are qualified.

[0044] During the detection process, after the wiping cotton 8 wipes the engine blades once, the fluorescent agent will be adsorbed on the surface of the wiping cotton 8, so that the fluorescent agent will still remain on the surface of the engine blades after subsequent wiping. As a further scheme of the present invention, the inner wall surface of the mounting shell 1 is rotatably connected with a rotating roller 29 corresponding to the position of the fixed cylinder 2 and the switching cylinder 19, and the wiping cotton 8 is wound on the surface of the rotating roller 29. The front and rear sides of the inner wall of the mounting shell 1 are provided with a first slide groove 30, and the two first slide grooves 30 are provided with a winding roller 31. The winding roller 31 is driven to rotate by an external driver. The inner wall of the first slide groove 30 is fixedly connected with a first spring 32, and the first spring 32 contacts the winding roller 31. The wiping cotton 8 is wound on the surface of the winding roller 31, and the front and rear sides of the inner wall of the mounting shell 1 are provided with a second groove 33. The inner walls of the two second grooves 33 are rotatably connected with a retractable swing rod 34, and the end of the swing rod 34 The swiping cotton 8 is extended to the position of the two swinging rods 34, and one end of the two swinging rods 34 is away from the swiping cotton 8 and protrudes outward. The sliding rod 18 extends to the position of the inner wall surface of the mounting shell 1. The movement of the sliding rod 18 will act on the swinging rod 34. The two swinging rods 34 are connected to one end of the swiping cotton 8 and rotate together to be connected to the tensioning rod 35. The tensioning rod 35 can tension the wiping cotton 8 downward. The tensioning rod 35 is between the rotating roller 29 and the winding roller 31. The inner wall surface of the second groove 33 is provided with a second sliding groove 36. The tensioning rod 35 slides in the second sliding groove 36. The inner wall of the second sliding groove 36 is fixedly connected with a second spring 37 near the rotating roller 29. The second spring 37 contacts the tensioning rod 35. A limiting groove 38 is provided on the inner wall of the mounting shell 1. The limiting groove 38 is communicated with the second groove 33. The limiting groove 38 is elastically connected to the limiting rod 40 through the third spring 39. The limiting rod 40 can limit the tensioning rod 35.During the detection process, the fixed cylinder 2 will drive the engine blades to rotate together, and the winding roller 31 will be driven to rotate by an external driver. The winding roller 31 will gradually wind up the wiping cotton 8. The wiping cotton 8 at the middle position of the winding roller 31 and the rotating roller 29 will fit with the fixed cylinder 2 under the action of the tensioning rod 35 and wipe the engine blades. The wiping cotton 8 is wiped by unidirectional winding, which is conducive to keeping the wiping cotton 8 clean every time it is wiped, and avoiding the wiping cotton 8 from being smeared on the surface of the wiping cotton 8 after wiping the engine blades once. Fluorescent agent will remain on the surface, resulting in the subsequent engine surface not being completely wiped, affecting the test results. When the diameter of the winding roller 31 gradually increases, the wiping cotton 8 at the position of the winding roller 31 will contact the fixed cylinder 2, and the winding roller 31 will slide in the first slide groove 30. In the process of the fixed cylinder 2 driving the suction cylinder 16 and the piston 17 to rotate, the sliding rod 18 will rotate together. When the sliding rod 18 slides to the protrusion of the driving groove 14, the sliding rod 18 will push the tail end of the swing rod 34, and the swing rod 34 will swing under the action of the sliding rod 18, and the tensioning rod 35 will slide in the second sliding groove 36 under the action of the sliding rod 18. When the tensioning rod 35 slides to the position of the limiting rod 40, the limiting rod 40 will limit the tensioning rod 35. When the wiping cotton 8 on the surface of the rotating roller 29 is completely used, it is necessary to replace the wiping cotton 8. The used wiping cotton 8 is removed and a new wiping cotton 8 is placed on the surface of the rotating roller 29. Then, the end of the wiping cotton 8 is wound around the surface of the tensioning rod 35, and then the limiting rod is pulled. Rod 40, the limit rod 40 will release the limit on the tension rod 35, and the tension rod 35 will move to the side close to the winding roller 31 under the action of the second spring 37, and then fit with the winding roller 31. The rotation of the winding roller 31 will rewind the wiping cotton 8, which is conducive to quickly replacing the wiping cotton 8, reducing the time for changing the winding, and avoiding manual winding. Misoperation will occur, thereby endangering the safety of the workers. When the switching cylinder 19 drives the engine blades to rotate, the same wiping cotton 8 will wipe the engine blades. ;

[0045] During the detection process, the sweeping brush 6 is only swept when the fixed cylinder 2 drives the engine blades to pass, and the impurities or floating dust on the surface of the engine blades cannot be completely swept away. As a further solution of the present invention, a third slide groove 41 is provided on the inner wall of the mounting shell 1, and the sweeping brush 6 is elastically slidably connected in the third slide groove 41 through a fourth spring 42, and one end of the sweeping brush 6 is fixedly connected with a wavy toggle block 43, and the surface of the fixed cylinder 2 is fixedly connected with a plurality of first toggle plates 44 arranged at equal angles, and the surface of the switching cylinder 19 is fixedly connected with a second toggle plate 45, and both the fixed cylinder 2 and the switching cylinder 19 are provided with a yielding groove 46; during the detection process, when the fixed cylinder 2 drives the engine blades to pass, the fixed cylinder 2 drives the engine blades to pass, and the fixed cylinder 2 drives the engine blades to pass. When the engine blade moves to the position of the sweeping brush 6, the first toggle plate 44 will act on the toggle block 43, and the sweeping brush 6 will swing under the action of the toggle block 43 and the fourth spring 42. The sweeping brush 6 will fully sweep away the impurities on the surface of the engine blade, which is beneficial to remove impurities or floating dust on the surface of the engine blade, and avoid the impurities or floating dust on the surface of the engine blade cannot be completely removed, which will block the fluorescent agent and cause inaccurate detection results. When the switching cylinder 19 rotates, the second toggle plate 45 will rotate accordingly. When the first toggle plate 44 and the second toggle plate 45 move to the contact position between the fixed cylinder 2 and the switching cylinder 19, the first toggle plate 44 and the second swing plate will move into the give way groove 46.

[0046] When the first spray box 7 and the second spray box 9 spray the fluorescent agent and the developer, continuous spraying will cause waste. As a further solution of the present invention, the first spray box 7 is fixedly connected to the inner wall surface of the mounting shell 1, and a spray port 47 is provided on the side of the first spray box 7 close to the fixed cylinder 2. The mounting shell 1 is connected with an adding pipe 48 at the position corresponding to the first spray box 7. Two partition plates 49 are fixedly connected in the first spray box 7. One-way water outlets 50 are provided on the surfaces of the two partition plates 49. An extrusion plate 51 is slidably connected between the two partition plates 49. A fifth spring 52 is connected between the extrusion plate 51 and the inner wall of the mounting shell 1. A pressure rod 53 is hinged on the inner wall surface of the mounting shell 1. The pressure rod 53 passes through the first spray box 7 at one end close to the first spray box 7 and is slidably connected to the extrusion plate 51. The surface of the first spray box 7 corresponds to the pressure rod 53. An arc groove 54 is provided at the end of the rod 53, and the internal structure of the second spray box 9 is the same as that of the first spray box 7; during the detection process, the fixed cylinder 2 will drive the first toggle plate 44 to rotate together, and when the first toggle plate 44 rotates to the position of the pressure rod 53, the first toggle plate 44 will act on the pressure rod 53, and the pressure rod 53 rotates, and the squeezing plate 51 will move with the pressure rod 53, and the fluorescent agent or developer between the two partition plates 49 will be sprayed out through the one-way water outlet 50 and the spray port 47, which is beneficial for the first spray box 7 and the second spray box 9 to be sprayed only when the engine blades pass by, saving resources and avoiding waste. When the first toggle plate 44 is disengaged from the pressure rod 53, the squeezing plate 51 will return to its original position under the action of the fifth spring 52, and new fluorescent agent or developer will re-enter between the two partition plates 49.

[0047] During the detection process, the engine blades after the detection are in the mounting groove 12, which is not convenient to take out. As a further solution of the present invention, the inner wall surface of the switching cylinder 19 corresponds to multiple mounting grooves 12 positions, and multiple L-shaped push rods 56 are elastically connected through the sixth spring 55, and the bottom of the push rod 56 is arc-shaped, and one end of the push rod 56 close to the inner wall of the switching cylinder 19 passes through the inner wall of the switching cylinder 19 and extends into the mounting groove 12. The inner wall of the mounting shell 1 corresponds to the bottom of the push rod 56 and is fixedly connected with a fixing block 57. The fixing block 57 will act on the push rod 56, and the inner wall of the mounting shell 1 corresponds to the fixed block 57. A third discharge plate 58 is connected, and the third discharge plate 58 is located outside the switching cylinder 19; during the detection process, the switching cylinder 19 drives the engine blades to rotate. When the engine blade detection is completed, the switching cylinder 19 will drive the engine blades to rotate to the position of the fixed block 57, and the fixed block 57 will act on the push rod 56, and the push rod 56 will move toward the inside of the mounting groove 12, thereby pushing the engine blades outward, which is conducive to pushing the engine blades out of the mounting groove 12, avoiding the difficulty in removing the engine blades after the detection is completed, affecting the detection process, and then the engine blades will fall onto the surface of the third discharge plate 58.

[0048] A method for using a fluorescent penetrant detection device for aircraft engine blades, the specific steps of the method are as follows:

[0049] Step 1: First, place the aerospace engine blade on the fluorescence detection device and start the fluorescence detection device;

[0050] Step 2: The fluorescent detection device will then fix and detect the surface of one side of the engine blade;

[0051] Step 3: After the inspection is completed, the engine blade will be turned over and the back side will be inspected;

[0052] Step 4: The engine blades that have completed the final inspection will undergo subsequent processing or installation.

Claims

1. A fluorescent penetrant detection device for aircraft engine blades, comprising a mounting shell (1), characterized in that: The inner wall of the mounting shell (1) is rotatably connected to a fixed cylinder (2), one end of the fixed cylinder (2) is fixedly connected to a first gear ring (3), a surface of the mounting shell (1) close to the first gear ring (3) is fixedly connected to a drive motor (4), the end of the rotating shaft of the drive motor (4) passes through the mounting shell (1) and is fixedly connected to a rotating gear (5), the rotating gear (5) is meshed with the first gear ring (3), and the inner wall of the mounting shell (1) is provided with a sweeping brush (6), a first spray box (7) capable of spraying fluorescent agent, a wiping cotton (8) and a second spray box (9) capable of spraying developer in sequence along the rotation direction of the fixed cylinder (2). A liquid spray box (9), wherein a first detection end (10) is fixedly connected to the inner wall surface of the mounting shell (1), and the first detection end (10) is capable of detecting fluorescent agent floating on the surface of the developer; a fixing mechanism capable of adsorbing and fixing the engine blade is provided on the surface of the fixing cylinder (2); a flipping mechanism capable of flipping the engine blade after single-side detection is completed is provided inside the mounting shell (1); a selection mechanism is provided inside the fixing mechanism and the flipping mechanism, and the selection mechanism is capable of discharging engine blades that fail the detection from the inside of the mounting shell (1); and the selection mechanism is triggered by the first detection end (10); The fixing mechanism comprises a fixing rod (11) and a plurality of mounting grooves (12); the fixing rod (11) is fixedly connected to the inner wall surface of the mounting shell (1); the fixing rod (11) is located in the middle of the fixing cylinder (2); a driving disk (13) is fixedly connected to the surface of the fixing rod (11); a surface of the driving disk (13) is provided with an annular driving groove (14); a plurality of the mounting grooves (12) are provided at equal angles on the surface of the fixing cylinder (2); a portion of the driving grooves (14) protrudes outward; and the bottom of the mounting grooves (12) is a curved surface. The mounting grooves (12) are capable of being fitted with the surface of the engine blades. The bottom of the inner wall of each of the plurality of mounting grooves (12) is fixedly connected with a soft suction nozzle (15). The bottom of the suction nozzle (15) is fixedly connected with an air suction cylinder (16). The bottom of the air suction cylinder (16) passes through the fixed cylinder (2) and extends into the interior of the fixed cylinder (2). The interior of the air suction cylinder (16) is slidably connected with a piston (17). The bottom of the piston (17) extends to the position of the driving disk (13). The bottom of the piston (17) is fixedly connected with a sliding rod (18). The sliding rod (18) slides in the driving groove (14). The flip mechanism comprises a switching cylinder (19), the switching cylinder (19) being identical to the fixed cylinder (2), and the mounting shell (1) is provided with a sweeping brush (6), a first spray box (7) capable of spraying fluorescent agent, a wiping cotton (8) and a second spray box (9) capable of spraying developer, which are identical to those of the fixed cylinder (2) on the periphery of the switching cylinder (19) corresponding to the switching cylinder (19), and the switching cylinder (19) is rotatably connected in the mounting shell (1), and a second gear ring (20) is fixedly connected to one end of the switching cylinder (19) close to the first gear ring (3), and the second gear ring (20) is fixedly connected to the second gear ring (3). The ring (20) meshes with the first gear ring (3), the switching cylinder (19) contacts the fixed cylinder (2), the switching cylinder (19) and the fixed cylinder (2) can rotate synchronously, the switching cylinder (19) is provided with a fixing mechanism identical to that of the fixed cylinder (2), the mounting groove (12) on the switching cylinder (19) and the mounting groove (12) on the fixed cylinder (2) are opposite to each other at the contact point between the switching cylinder (19) and the fixed cylinder (2), and the protrusions of the two driving grooves (14) are both oriented toward the contact point between the switching cylinder (19) and the fixed cylinder (2).

2. The fluorescent penetrant detection device for aircraft engine blades according to claim 1, characterized in that: The selection mechanism comprises two first grooves (21), the two first grooves (21) being respectively formed on the surface of the driving disk (13) inside the fixed cylinder (2) and the switching cylinder (19), the driving groove (14) being partially covered by the first grooves (21), a sliding block (22) being slidably connected inside the first groove (21), a sliding rail (23) being formed on the surface of the sliding block (22), the sliding rail (23) being capable of connecting the driving groove (14), a first telescopic cylinder (24) being fixedly connected between the sliding block (22) inside the fixed cylinder (2) and the inner wall of the first groove (21), The first telescopic cylinder (24) is triggered by the first detection terminal (10); a second telescopic cylinder (25) is fixedly connected between the sliding block (22) inside the switching cylinder (19) and the inner wall of the first groove (21); a second detection terminal (26) is fixedly connected to the inner wall surface of the mounting shell (1); the second telescopic cylinder (25) is triggered by the second detection terminal (26); a first discharge plate (27) is fixedly connected to the bottom of the inner wall of the mounting shell (1) corresponding to the first detection terminal (10); and a second discharge plate (28) is fixedly connected to the bottom of the inner wall of the mounting shell (1) corresponding to the second detection terminal (26).

3. The fluorescent penetrant detection device for aircraft engine blades according to claim 1, characterized in that: The inner wall surface of the mounting shell (1) is rotatably connected to a rotating roller (29) at the position corresponding to the fixed cylinder (2) and the switching cylinder (19), and the wiping cotton (8) is wound around the surface of the rotating roller (29). The inner wall of the mounting shell (1) is provided with a first slide groove (30) on both the front and rear sides, and a winding roller (31) is provided in the two first slide grooves (30). The winding roller (31) is driven to rotate by an external driver. The inner wall of the first slide groove (30) is fixedly connected to a first spring (32), and the first spring (32) is in contact with the winding roller (31). The wiping cotton (8) is wound around the surface of the winding roller (31). The inner wall of the mounting shell (1) is provided with a second groove (33) on both the front and rear sides, and the inner walls of the two second grooves (33) are rotatably connected to a retractable swing rod (34), and the end of the swing rod (34) extends to the position of the wiping cotton (8). The two swing rods (34) protrude outward at one end away from the wiping cotton (8). The sliding rod (18) extends When the sliding rod (18) moves to the position on the inner wall surface of the mounting shell (1), the movement of the sliding rod (18) will act on the swing rod (34). The two swing rods (34) are connected to a tensioning rod (35) near one end of the wiping cotton (8) and rotate together. The tensioning rod (35) can tension the wiping cotton (8) downward. The tensioning rod (35) is located between the rotating roller (29) and the winding roller (31). The inner wall surface of the second groove (33) is provided with a second sliding groove (36). The tensioning rod (35) slides in the first In the second slide groove (36), a second spring (37) is fixedly connected to the inner wall of the second slide groove (36) close to the rotating roller (29), and the second spring (37) is in contact with the tensioning rod (35). A limiting groove (38) is provided on the inner wall of the mounting shell (1), and the limiting groove (38) is connected to the second groove (33). A limiting rod (40) is elastically connected to the limiting groove (38) via a third spring (39), and the limiting rod (40) can limit the tensioning rod (35).

4. The fluorescent penetrant detection device for aircraft engine blades according to claim 2, characterized in that: The inner wall of the mounting shell (1) is provided with a third slide groove (41), the sweeping brush (6) is elastically slidably connected in the third slide groove (41) via a fourth spring (42), one end of the sweeping brush (6) is fixedly connected with a wavy toggle block (43), the surface of the fixed cylinder (2) is fixedly connected with a plurality of first toggle plates (44) arranged at equal angles, the surface of the switching cylinder (19) is fixedly connected with a second toggle plate (45), and both the fixed cylinder (2) and the switching cylinder (19) are provided with a clearance groove (46).

5. The device for fluorescent penetrant testing of aircraft engine blades according to claim 4, characterized in that: The first liquid spray box (7) is fixedly connected to the inner wall surface of the mounting shell (1); a liquid spray port (47) is provided on a side of the first liquid spray box (7) close to the fixed cylinder (2); a adding pipe (48) is connected to the mounting shell (1) at a position corresponding to the first liquid spray box (7); two partition plates (49) are fixedly connected inside the first liquid spray box (7); surfaces of the two partition plates (49) are provided with one-way water outlets (50); an extrusion plate (51) is slidably connected between the two partition plates (49); a fifth spring (52) is connected between the extrusion plate (51) and the inner wall of the mounting shell (1); a pressure rod (53) is hingedly connected to the inner wall surface of the mounting shell (1); an end of the pressure rod (53) close to the first liquid spray box (7) penetrates the first liquid spray box (7) and is slidably connected to the extrusion plate (51); an arc groove (54) is provided on the surface of the first liquid spray box (7) corresponding to the end of the pressure rod (53); the second liquid spray box (9) has the same internal structure as the first liquid spray box (7).

6. The device for fluorescent penetrant testing of aircraft engine blades according to claim 4, characterized in that: A plurality of L-shaped push rods (56) are elastically connected to the positions of the plurality of mounting grooves (12) on the inner wall surface of the switching cylinder (19) via a sixth spring (55), and the bottom of the push rods (56) is arc-shaped. One end of the push rods (56) close to the inner wall of the switching cylinder (19) penetrates the inner wall of the switching cylinder (19) and extends into the mounting groove (12). A fixing block (57) is fixedly connected to the bottom of the push rod (56) on the inner wall of the mounting shell (1), and the fixing block (57) acts on the push rod (56). A third discharge plate (58) is fixedly connected to the position of the fixing block (57) on the inner wall of the mounting shell (1), and the third discharge plate (58) is located outside the switching cylinder (19).

7. A method for using a fluorescent penetrant detection device for aircraft engine blades, applicable to an aircraft engine blade fluorescent penetrant detection device according to any one of claims 1 to 6, characterized in that: The specific steps of this method are as follows: Step 1: First, place the aerospace engine blade on the fluorescence detection device and start the fluorescence detection device; Step 2: The fluorescent detection device will then fix and detect the surface of one side of the engine blade; Step 3: After the inspection is completed, the engine blade will be turned over and the back side will be inspected; Step 4: The engine blades that have completed the final inspection will undergo subsequent processing or installation.

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