Stress detection device and detection method for rotating parts of aircraft engines

Abstract

The present invention belongs to the technical field of stress detection of rotating parts of aircraft engines, and discloses a stress detection device and detection method for rotating parts of aircraft engines, the device includes an equipment box, a control area is arranged on one side of the equipment box, a mounting box is fixedly installed on the top of the equipment box, a mounting frame is arranged inside the mounting box, an operating table is arranged at the bottom of the mounting frame and is fixedly installed on the inner wall of the bottom of the mounting box, a placement area is fixedly installed on the top of the operating table, an X-ray detector is arranged on the mounting frame, a detection head is arranged at the bottom of one end of the X-ray detection, and a mounting block is fixedly installed on one side of the detection head and located at the bottom of the X-ray detector. Through the movement of the fixed block and the moving rod, the movement of the first light shielding plate, the second light shielding plate and the third light shielding plate can be adjusted multiple times, and the size of the irradiation area of ​​the detection head can be controlled, which is convenient for detecting different parts of the curved surface structure, thereby improving the efficiency of rotating part detection and facilitating use.

Description

Technical Field

[0001] The invention belongs to the technical field of stress detection of rotating parts of aircraft engines, and in particular relates to a stress detection device and a detection method for rotating parts of aircraft engines. Background Art

[0002] Stress detection includes stress detection on the surface of the workpiece, stress detection at a certain depth, and qualitative and quantitative analysis of stress. This stress detection device is widely used in stress detection of rotating parts of aircraft engines. It can provide high-precision stress detection results and is suitable for various complex working environments and needs. Stress detection methods include magnetic measurement, X-ray detection and strain gauge measurement. X-ray stress meter is a device used to measure the stress of metal components. The device can non-destructively measure the stress at a specified point and direction on the surface of the material in a short time, and has the function of measuring the magnitude and direction of the principal stress.

[0003] In the prior art, when performing stress detection on the curved structure of a rotating part, it is necessary to control the size of the X-ray irradiation area through a light-shielding tube to ensure that the diffraction lines remain parallel narrow beams as much as possible. However, the light-shielding tube cannot automatically control the size of the irradiation area and cannot be adjusted multiple times, which makes it inconvenient to improve the efficiency of rotating part detection. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] A stress detection device for a rotating part of an aircraft engine comprises an equipment box, a control area is arranged on one side of the equipment box, an installation box is fixedly installed on the top of the equipment box, a mounting frame is arranged inside the installation box, an operating table is arranged at the bottom of the installation frame and is fixedly installed on the inner wall of the bottom of the installation box, a placement area is fixedly installed on the top of the operating table, an X-ray detector is arranged on the installation frame, a detection head is arranged at the bottom of one end of the X-ray detection, a mounting block is fixedly installed on one side of the detection head and located at the bottom of the X-ray detector, a protective plate is slidably connected to the bottom of the mounting block, a first electric push rod is fixedly installed inside the mounting block, a first connecting block is fixedly installed on one side of the first electric push rod, a fixed block is arranged on one side of the first connecting block, a mounting groove is opened on the side of the first connecting block close to the fixed block, a second electric push rod is fixedly installed inside the mounting groove, and one side of the second electric push rod is connected to the fixed One side of the block is fixedly installed, a fixed opening is opened on one side of the fixed block, a moving rod is fixedly installed inside the fixed opening, an installation opening is opened in the middle of the moving rod, a first shading plate is arranged at the bottom of the fixed block and at the top of the fixed opening, two moving openings are opened on one side of the moving rod, a second shading plate is arranged on one side of the two moving openings and located inside the fixed block, a third shading plate is arranged at the bottom of the second shading plate, a first electric telescopic rod is fixedly installed on the top of both sides of the third shading plate, a limiting block is fixedly installed on the top of the first electric telescopic rod, moving blocks are arranged on both sides of the first shading plate, a moving groove is opened inside the moving block, a fixed structure is arranged inside the moving groove, the second shading plate is connected to the moving block through the fixed structure, a third electric push rod is fixedly installed on one side of the moving block, and moving structures are arranged on the side of the third electric push rod away from the second shading plate and on both sides of the first shading plate.

[0006] As a preferred embodiment of the above technical solution, through holes are opened in the middle of the first light shielding plate, the second light shielding plate and the third light shielding plate, the second light shielding plate is located on the top of the third light shielding plate, the third light shielding plate is located on the top of the first light shielding plate, the diameter of the through hole on the second light shielding plate is smaller than the diameter of the through hole on the third light shielding plate, the diameter of the through hole on the third light shielding plate is smaller than the diameter of the through hole on the first light shielding plate, the second light shielding plate and the third light shielding plate are respectively arranged corresponding to the two movable openings, one side of the third electric push rod is fixedly installed with the inner wall of the fixed block, the movable opening located on one side of the third light shielding plate is flush with the inner wall of the bottom of the fixed block, and the bottom of the third light shielding plate is slidably connected with the inner wall of the bottom of the fixed block.

[0007] As a preferred embodiment of the above technical solution, sliding grooves are provided on both sides of the first light shielding plate and at the bottom of the fixed block, the third electric push rod is located on both sides of the second light shielding plate, a slot is provided at the telescopic end of the third electric push rod, a support block is provided on one side of the second light shielding plate, the bottom of the support block is fixedly installed on the inner wall of the bottom of the fixed block, the support block is located between the third electric push rod, one end of the second light shielding plate is located on the support block, and the third light shielding plate is located at the bottom of the support block.

[0008] As a preferred embodiment of the above technical solution, the movable structure includes a first rack, a fourth electric push rod is fixedly installed on one side of the first rack, one end of the fourth electric push rod is plugged into the slot, a gear is meshed at the bottom of the first rack, a second rack is meshed at the bottom of the gear, the second rack passes through the slide groove and extends to the bottom of the fixed block, both sides of the second rack are slidably connected to the slide groove, a second connecting block is fixedly installed on one end of the second rack, and one side of the second connecting block is fixedly installed to the first shading plate.

[0009] As a preferred embodiment of the above technical solution, one side of the first rack and the second rack are both slidably connected to the inner wall of the fixed block, the first rack and the second rack are located on both sides of the fourth electric push rod, a rotating rod is fixedly installed in the middle of the gear, one side of the rotating rod is rotatably connected to the inner wall of the fixed block, a first magnetic block is fixedly installed on the side of the first rack close to the moving rod, a second magnetic block is fixedly installed on the inner wall of the fixed block close to the moving rod, the second magnetic block and the first rack are both located on both sides of the moving rod, and the first magnetic block is magnetically connected to the second magnetic block.

[0010] As a preferred embodiment of the above technical solution, the fixed structure includes a second electric telescopic rod, one side of the second electric telescopic rod is fixedly installed on the inner wall of the movable groove, the other side of the second electric telescopic rod is fixedly installed with an insertion rod, one end of the insertion rod is fixedly installed with a movable block, one side of the movable block is fixedly installed with a fixed rod, a limiting hole is opened at the top of the limiting block, and the fixed rod is plugged into the limiting hole.

[0011] As a preferred embodiment of the above technical solution, a first movable opening is opened at the bottom of the moving block and at the bottom of the moving groove, the first movable opening is arranged corresponding to the limiting block, a second movable opening is opened on the side of the moving block close to the second light shielding plate, the fixed rod is located at the bottom of the insertion rod, and a fixed groove is opened on the side of the second light shielding plate close to the moving block, the insertion rod and the fixed rod pass through the second movable opening and are plugged into the fixed groove.

[0012] As a preferred embodiment of the above technical solution, an annular groove is provided on the inner wall of the top end of the movable rod, a third electric telescopic rod is fixedly installed inside the annular groove, a mounting plate is fixedly installed on the top of the third electric telescopic rod, a first cold air box is fixedly installed on the top of the mounting plate, a second cold air box is fixedly installed on both sides of the third electric telescopic rod and inside the annular groove, cold air pipes are fixedly installed on one side of the first cold air box and the second cold air box, and a control valve is provided at one end of the cooling pipe.

[0013] As a preferred embodiment of the above technical solution, the annular groove is located at the top of the movable port, the first cold air box is located inside the annular groove, the cold air pipe and the control valve are distributed in a circular array with the center of the installation port, the control valve on one side of the second cold air box and one end of the cold air pipe pass through the inner wall of the annular groove and extend to the inside of the installation port, and the cold air pipe and the control valve on one side of the first cold air box are both located inside the annular groove.

[0014] The present invention also provides a detection method using the above stress detection device for rotating parts of an aircraft engine, the method comprising the following steps:

[0015] Step 1: fix the rotating part to be detected in the placement area, align the detection head with the part to be detected, and use the control area to make the X-ray detector and the detection head perform detection. When it is necessary to detect the curved surface, first move the protective plate to expose the bottom of the mounting block, and then start the first electric push rod to push the first connecting block, the second electric push rod, the fixed block and the moving rod to move downward, so that the fixed block and the moving rod move out of the mounting block to the position below the detection head. Start the second electric push rod to push the fixed block and the moving rod to move in the direction of the detection head, so that the moving rod is aligned with the detection head, so that the detection head is located at the center of the mounting port, and then the first electric push rod is contracted to drive the first connecting block, the second electric push rod, the fixed block and the moving rod to move upward, and the fixed block and the moving rod are moved upward to the outside of the detection head, so that the detection head is located inside the mounting port and corresponds to the first shading plate at the bottom of the mounting port and the fixed block. The through hole on the first shading plate reduces the irradiation area of ​​the detection head, thereby ensuring that the diffraction line is still a parallel narrow beam, ensuring the diffraction number;

[0016] Step 2: When the X-ray irradiation area needs to be adjusted when inspecting other parts, start the third electric push rod to drive the moving block and the second light shielding plate to move, and drive the first rack to move along the inner wall of the fixed block toward the moving rod through the fourth electric push rod. At the same time, the gear drives the rotating rod to rotate along the inner wall of the fixed block, and the second rack drives the second connecting block and the first light shielding plate to move along the slide groove. When the second light shielding plate moves through the moving opening to the inside of the mounting opening of the moving rod, the first light shielding plate moves to the side of the fixed block away from the fixed opening, exposing the fixed opening so that the first light shielding plate no longer blocks the fixed opening, and then the second light shielding plate is used to adjust the irradiation area of ​​the detection head;

[0017] Step 3: When the second shading plate moves to the inside of the installation opening, the first rack moves to both sides of the moving rod, and the first magnetic block on one side of the rack is magnetically connected to the second magnetic block on the inner wall of the fixed block to fix the position of the first rack, and then the fourth electric push rod is started to shrink and no longer plug into the slot on one side of the third electric push rod, so that the first rack is no longer connected to the third electric push rod, and then the third electric push rod is retracted, and the moving block and the second shading plate are driven to move to the original position through the moving opening, and the first shading plate is supported by the support block, and then the first electric telescopic rod is started to drive the limiting block to move to the inside of the moving slot, and then the second electric telescopic rod is retracted to drive the plug rod, the movable block and the fixed rod to move to the inside of the moving slot, so that the plug rod and the fixed rod no longer fix the second shading plate, and when the fixed rod moves to the moving slot, it is inserted into the limiting hole of the limiting block to limit the limiting block, so that the moving block is no longer fixed to the second shading plate, but is fixed to the third shading plate, and when the third electric push rod moves with the moving block, it can drive the third shading plate to move, and move to the inside of the installation opening of the moving rod through the moving opening, and adjust the irradiation area of ​​the detection head again;

[0018] Step 4: When the detection head is used for a long time, a lot of heat will be generated. Start the extension of the third electric telescopic rod to push the first cold air box to move to the top of the moving rod. Then, the cold air inside the first cold air box and the second cold air box is transported through the cold air pipe through the control valve, so that the cold air can be transported to the inside of the installation port to cool the outside of the detection head, thereby extending the service life of the detection head.

[0019] The beneficial effects of the present invention are:

[0020] (1) The present invention adjusts the movement of the first light shielding plate, the second light shielding plate and the third light shielding plate multiple times by moving the fixed block and the moving rod, and can control the size of the irradiation area of ​​the detection head, so as to facilitate the detection of different parts of the curved surface structure, thereby improving the efficiency of the detection of the rotating part and facilitating the use;

[0021] (2) The present invention can cool the outer side of the detection head through the action of the first cold air box, the second cold air box and the cold air pipe, thereby facilitating the heat dissipation of the detection head and preventing the detection head from generating a large amount of heat due to long-term use, thereby affecting the use effect of the detection head, and facilitating increasing the service life of the detection head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment;

[0023] Figure 2 Shown is a structural diagram of an embodiment X-ray detector;

[0024] Figure 3 Shown is a structural diagram of an embodiment mounting block;

[0025] Figure 4 Shown is a diagram of the internal structure of the mounting block of the embodiment;

[0026] Figure 5 What is shown is the internal structure diagram of the fixed block of the embodiment;

[0027] Figure 6 The structure diagram of the movable rod, the first shading plate and the third shading plate of the embodiment is shown;

[0028] Figure 7 Shown is a structural diagram of a moving structure, a first light shielding plate, a second light shielding plate, and a third light shielding plate of an embodiment;

[0029] Figure 8 Shown is a structural diagram of a supporting block, a second shading plate, and a third shading plate of an embodiment;

[0030] Fig. 9 The structure diagram of the second shading plate, the third shading plate and the moving block of the embodiment is shown;

[0031] Fig.10 The structure diagram of the third shading plate and the fixing structure of the embodiment is shown;

[0032] Fig.11 The embodiment shown is Fig.10 A magnified image of point A;

[0033] Fig.12 Shown is a structural diagram of the interior of the annular groove of an embodiment.

[0034] In the figure: 1, equipment box; 2, installation box; 3, placement area; 4, X-ray detector; 5, detection head; 6, installation block; 7, protection plate; 8, first electric push rod; 9, first connecting block; 10, fixed block; 11, second electric push rod; 12, fixed port; 13, moving rod; 14, first shading plate; 15, second shading plate; 16, third shading plate; 17, first electric telescopic rod; 18, limiting block; 19, moving block; 20, fixed structure; 2 01. Second electric telescopic rod; 202. Insert rod; 203. Movable block; 204. Fixed rod; 21. Third electric push rod; 22. Moving structure; 221. First rack; 222. Fourth electric push rod; 223. Gear; 224. Second rack; 225. Second connecting block; 23. Support block; 24. First magnetic block; 25. Second magnetic block; 26. Third electric telescopic rod; 27. First cold air box; 28. Second cold air box; 29. ​​Cold air pipe. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0036] The present invention provides a stress detection device and a detection method for a rotating part of an aero-engine, such as Figures 1 to 5As shown, it includes an equipment box 1, a control area is arranged on one side of the equipment box 1, an installation box 2 is fixedly installed on the top of the equipment box 1, a mounting frame is arranged inside the installation box 2, an operating table is arranged at the bottom of the installation frame and is fixedly installed on the inner wall of the bottom of the installation box 2, a placement area 3 is fixedly installed on the top of the operating table, an X-ray detector 4 is arranged on the installation frame, a detection head 5 is arranged at the bottom of one end of the X-ray detection, a mounting block 6 is fixedly installed on one side of the detection head 5 and located at the bottom of the X-ray detector 4, a protective plate 7 is slidably connected to the bottom of the mounting block 6, a first electric push rod 8 is fixedly installed inside the mounting block 6, a first connecting block 9 is fixedly installed on one side of the first electric push rod 8, a fixed block 10 is arranged on one side of the first connecting block 9, a mounting groove is opened on the side of the first connecting block 9 close to the fixed block 10, a second electric push rod 11 is fixedly installed inside the mounting groove, one side of the second electric push rod 11 is fixedly installed on one side of the fixed block 10, and a fixing port 12 is opened on one side of the fixed block 10. A moving rod 13 is fixedly installed inside the fixed opening 12, and an installation opening is opened in the middle of the moving rod 13. A first shading plate 14 is arranged at the bottom of the fixed block 10 and at the top of the fixed opening 12. Two moving openings are opened on one side of the moving rod 13, and a second shading plate 15 is arranged on one side of the two moving openings and located inside the fixed block 10. A third shading plate 16 is arranged at the bottom of the second shading plate 15, and first electric telescopic rods 17 are fixedly installed on the tops of both sides of the third shading plate 16. A limiting block 18 is fixedly installed on the top of the first electric telescopic rod 17. Moving blocks 19 are arranged on both sides of the first shading plate 14, and a moving groove is opened inside the moving block 19. A fixed structure 20 is arranged inside the moving groove. The second shading plate 15 is connected to the moving block 19 through the fixed structure 20. A third electric push rod 21 is fixedly installed on one side of the moving block 19, and a moving structure 22 is arranged on the side of the third electric push rod 21 away from the second shading plate 15 and on both sides of the first shading plate 14.

[0037] The X-ray detector 4 is installed by the mounting frame, the rotating part to be detected is fixed in the placement area 3, the detection head 5 is aligned with the part to be detected, and the X-ray detector 4 and the detection head 5 are detected in the working area through the control area. When it is necessary to detect the curved surface part, the protective plate 7 is first moved to one side to expose the bottom of the mounting block 6, and then the first electric push rod 8 is started to push the first connecting block 9, the second electric push rod 11, the fixed block 10 and the moving rod 13 to move downward, so that the fixed block 10 and the moving rod 13 move out of the inside of the mounting block 6 and move to the position below the detection head 5, and then the second electric push rod 11 is started to push the fixed block 10 and the moving rod 13 to move in the direction of the detection head 5, so that the moving rod 13 is aligned with the detection head 5, so that the detection head 5 is located at the center of the installation opening, and then the first electric push rod 8 is contracted to drive the first connecting block 9, the second electric push rod 11, the fixed block 10 and the moving rod 13 to move upward, so that the fixed block 10 and the moving rod 13 move upward to the outside of the detection head 5, so that the detection head 5 is located inside the installation opening and corresponds to the first shading plate 14 at the bottom of the installation opening and the fixed block 10, and the irradiation area of ​​the detection head 5 is reduced through the through hole on the first shading plate 14. When the X-ray irradiation area needs to be adjusted when detecting other parts, the third electric push rod 21 is started to extend and drive the moving block 19 to move, and the moving block 19 is driven to move with the second shading plate 15 through the fixed structure 20. When the second shading plate 15 moves, the moving structure 2 2 makes the first light shielding plate 14 move along the bottom of the fixed block 10. When the second light shielding plate 15 moves to the inside of the mounting opening of the moving rod 13 through the moving opening, the first light shielding plate 14 moves to the side of the fixed block 10 away from the fixing opening 12, exposing the fixing opening 12, so that the first light shielding plate 14 no longer blocks the fixing opening 12, and then the second light shielding plate 15 is used to adjust the irradiation area of ​​the detection head 5. When the second light shielding plate 15 moves to the inside of the mounting opening, the first magnetic block 24 on one side of the moving structure 22 is magnetically connected with the second magnetic block 25 on the inner wall of the fixed block 10, the moving structure 22 is limited, and then the third electric push rod 21 is retracted, and the moving block 19 and the second light shielding plate 15 are driven to move to the original position through the moving opening, and then the third electric push rod 21 is started. An electric telescopic rod 17 drives the limiting block 18 to move to the inside of the moving groove, and then moves to the inside of the moving groove through the fixed structure 20. The fixed structure 20 fixes the limiting block 18, so that the moving block 19 is no longer fixed to the second shading plate 15, but is fixed to the third shading plate 16. When the third electric push rod 21 moves with the moving block 19, it can drive the third shading plate 16 to move, and move to the inside of the installation port of the moving rod 13 through the moving port, and adjust the irradiation area of ​​the detection head 5 again. The size of the irradiation area of ​​the detection head 5 can be controlled, thereby ensuring that the diffraction lines are still parallel narrow beams, ensuring the effectiveness of the diffraction geometry, and facilitating the detection of different parts of the curved structure, thereby improving the efficiency of rotating part detection.

[0038] like Figures 4 to 7 As shown, through holes are opened in the middle of the first light shielding plate 14, the second light shielding plate 15 and the third light shielding plate 16, the second light shielding plate 15 is located at the top of the third light shielding plate 16, the third light shielding plate 16 is located at the top of the first light shielding plate 14, the diameter of the through hole on the second light shielding plate 15 is smaller than the diameter of the through hole on the third light shielding plate 16, the diameter of the through hole on the third light shielding plate 16 is smaller than the diameter of the through hole on the first light shielding plate 14, the second light shielding plate 15 and the third light shielding plate 16 are respectively arranged corresponding to the two movable openings, one side of the third electric push rod 21 is fixedly installed on the inner wall of the fixed block 10, the movable opening located on one side of the third light shielding plate 16 is flush with the bottom inner wall of the fixed block 10, and the bottom of the third light shielding plate 16 is slidably connected to the bottom inner wall of the fixed block 10.

[0039] The through hole is arranged corresponding to the mounting port and the detection head 5 in the middle of the moving rod 13, so that the X-ray can pass through the mounting port and the through hole to detect the rotating part. Since the second light shielding plate 15 is located at the top of the third light shielding plate 16, and the third light shielding plate 16 is located at the top of the first light shielding plate 14, the diameter of the through hole on the second light shielding plate 15 is smaller than the diameter of the through hole on the third light shielding plate 16, and the diameter of the through hole on the third light shielding plate 16 is smaller than the diameter of the through hole on the first light shielding plate 14, it is convenient to control the different sizes of the irradiation area of ​​the detection head 5 by moving the first light shielding plate 14, the second light shielding plate 15 and the third light shielding plate 16, so as to detect different positions of the curved surface of the rotating part. Since the second light shielding plate 15 and the third light shielding plate 16 are respectively arranged corresponding to the two moving ports, the second light shielding plate 15 and the third light shielding plate 16 can be moved to the inside of the mounting port through the two moving ports to block the irradiation area of ​​the detection head 5, and the irradiation area of ​​the detection head 5 can be adjusted and controlled multiple times.

[0040] like Figures 4 to 7 As shown, slide grooves are provided on both sides of the first light shielding plate 14 and at the bottom of the fixed block 10, the third electric push rod 21 is located on both sides of the second light shielding plate 15, and a slot is provided at the telescopic end of the third electric push rod 21. A support block 23 is provided on one side of the second light shielding plate 15, and the bottom of the support block 23 is fixedly installed on the inner wall of the bottom of the fixed block 10. The support block 23 is located between the third electric push rod 21, one end of the second light shielding plate 15 is located on the support block 23, and the third light shielding plate 16 is located at the bottom of the support block 23.

[0041] When the third electric push rod 21 drives the first light shielding plate 14 to move, the movable structure 22 drives the second light shielding plate 15 to move through the slide groove, so that the second light shielding plate 15 moves to the bottom of the detection head 5 to block the irradiation area of ​​​​the X-ray; when the movable structure 22 and the movable block 19 are no longer connected to the first light shielding plate 14, the support block 23 is used to support and fix the second light shielding plate 15, thereby improving the stability of the second light shielding plate 15.

[0042] like Figures 6 to 8As shown, the movable structure 22 includes a first rack 221, a fourth electric push rod 222 is fixedly installed on one side of the first rack 221, one end of the fourth electric push rod 222 is plugged into the slot, a gear 223 is meshed at the bottom of the first rack 221, a second rack 224 is meshed at the bottom of the gear 223, the second rack 224 extends through the slide groove to the bottom of the fixed block 10, both sides of the second rack 224 are slidably connected to the slide groove, a second connecting block 225 is fixedly installed at one end of the second rack 224, and one side of the second connecting block 225 is fixedly installed to the first shading plate 14.

[0043] When the third electric push rod 21 pushes the moving block 19 to move, the fourth electric push rod 222 is connected to the slot, so that the third electric push rod 21 moves and drives the first rack 221 to move, so that the gear 223 drives the rotating rod to rotate, and the second rack 224 moves along the slide groove and drives the second connecting block 225 and the first light shielding plate 14 to move, so that the first light shielding plate 14 and the second light shielding plate 15 move in opposite directions. When the first light shielding plate 14 moves to the inside of the installation port, the first light shielding plate 14 moves to the side of the fixed block 10 to expose the fixed port 12, so that the second light shielding plate 15 can block and control the irradiation area of ​​the detection head 5, so as to facilitate the detection of the curved surface structure of the rotating part.

[0044] like Figures 6 to 8 As shown, one side of the first rack 221 and the second rack 224 are both slidably connected to the inner wall of the fixed block 10, the first rack 221 and the second rack 224 are located on both sides of the fourth electric push rod 222, a rotating rod is fixedly installed in the middle of the gear 223, one side of the rotating rod is rotatably connected to the inner wall of the fixed block 10, a first magnetic block 24 is fixedly installed on the side of the first rack 221 close to the moving rod 13, a second magnetic block 25 is fixedly installed on the inner wall of the fixed block 10 close to the moving rod 13, the second magnetic block 25 and the first rack 221 are both located on both sides of the moving rod 13, and the first magnetic block 24 is magnetically connected to the second magnetic block 25.

[0045] When the first rack 221 and the second rack 224 move inside the fixed block 10, the gear 223 drives the rotating rod to rotate along the inner wall of the fixed block 10, thereby facilitating the improvement of the stability of the first shading plate 14 and the second shading plate 15 when they move. When the first shading plate 14 moves inside the mounting opening, the first rack 221 moves to both sides of the moving rod 13, and the first magnetic block 24 and the second magnetic block 25 are magnetically connected, so that the first rack 221 is fixed to both sides of the moving rod 13, so that the second rack 224 and the second connecting block 225 The position is fixed, and then the fourth electric push rod 222 is contracted, so that the first rack 221 is no longer connected to the third electric push rod 21, so that the third electric push rod 21 can drive the moving block 19 and the second shading plate 15 to move to the original position, and then through the connection between the limiting block 18 and the fixed structure 20, the third electric push rod 21 can drive the third shading plate 16 to move to the inside of the installation port, and the irradiation area of ​​the detection head 5 is adjusted again, so as to facilitate the detection of different positions of the curved surface structure of the rotating part and improve the detection efficiency of the detection head 5.

[0046] like Figures 9 to 11 As shown, the fixed structure 20 includes a second electric telescopic rod 201, one side of the second electric telescopic rod 201 is fixedly installed on the inner wall of the movable groove, and the other side of the second electric telescopic rod 201 is fixedly installed with an insertion rod 202, one end of the insertion rod 202 is fixedly installed with a movable block 203, and one side of the movable block 203 is fixedly installed with a fixed rod 204, a limiting hole is opened at the top of the limiting block 18, and the fixed rod 204 is plugged into the limiting hole, and a first movable opening is opened at the bottom of the movable block 19 and located at the bottom of the movable groove, and the first movable opening is arranged corresponding to the limiting block 18, and a second movable opening is opened on the side of the movable block 19 close to the second shading plate 15, and the fixed rod 204 is located at the bottom of the insertion rod 202, and the second shading plate 15 is opened on the side close to the movable block 19, and the insertion rod 202 and the fixed rod 204 pass through the second movable opening and are plugged into the fixed groove.

[0047] The first electric telescopic rod 17 is started to drive the limiting block 18 to move upward, so that the limiting block 18 moves to the inside of the movable groove through the first movable opening, and then the rod 202, the movable block 203 and the fixed rod 204 at the bottom end of the second electric telescopic rod 201 are separated from the fixed groove, so that the rod 202, the movable block 203 and the fixed rod 204 are separated from the fixed groove. It moves to the inside of the movable groove through the second movable opening. When the fixed rod 204 moves to the inside of the movable groove, it passes through the limiting hole at one end of the limiting block 18 to limit the limiting block 18, so that the insertion rod 202, the movable block 203 and the fixed rod 204 are no longer connected to the first shading plate 14. The connection between the fixed rod 204 and the limiting block 18 enables the movable block 19 to be connected to the third shading plate 16. When the third electric push rod 21 drives the movable block 19 to move, the second shading plate 15 is located on the support block 23 and no longer moves, so that the third shading plate 16 can be moved to the inside of the installation opening to block the irradiation area of ​​the detection head 5, so as to facilitate multiple adjustments to the irradiation area of ​​the detection head 5, thereby improving the detection effect of the rotating part at the curved surface structure.

[0048] like Fig.12 As shown, an annular groove is provided on the inner wall of the top end of the moving rod 13, a third electric telescopic rod 26 is fixedly installed inside the annular groove, a mounting plate is fixedly installed on the top of the third electric telescopic rod 26, a first cold air box 27 is fixedly installed on the top of the mounting plate, second cold air boxes 28 are fixedly installed on both sides of the third electric telescopic rod 26 and inside the annular groove, cold air pipes 29 are fixedly installed on one side of the first cold air box 27 and the second cold air box 28, and a control valve is provided at one end of the cold air pipes 29.

[0049] By starting the third electric telescopic rod 26 to push the mounting plate and the first cold air box 27 to the top of the moving rod 13, the cold air pipe 29 can be aligned with the outside of the detection head 5, and then the cold air inside the first cold air box 27 and the second cold air box 28 can be transported to the inside of the mounting port through the cold air pipe 29 through the control valve, so as to cool down the detection head 5 inside the mounting port, thereby improving the use effect of the detection head 5.

[0050] like Fig.12 As shown, the annular groove is located at the top of the movable port, the first cold air box 27 is located inside the annular groove, the cold air pipe 29 and the control valve are distributed in a circular array with the center of the installation port, the control valve on one side of the second cold air box 28 and one end of the cold air pipe 29 extend through the inner wall of the annular groove to the inside of the installation port, and the cold air pipe 29 and the control valve on one side of the first cold air box 27 are both located inside the annular groove.

[0051] The third electric push rod 21, the first cold air box 27 and the second cold air box 28 can be installed through the annular groove. Since the cold air pipe 29 and the control valve on one side of the first cold air box 27 are located inside the annular groove, the first cold air box 27 can move up and down inside the annular groove. The cold air pipe 29 and the control valve distributed in a circular array can be used to cool the outside of the detection head 5, thereby improving the cooling effect and improving the use effect of the detection head 5.

[0052] The present invention also provides a detection method using the above stress detection device for a rotating part of an aero-engine, comprising the following steps:

[0053] Step 1: Fix the rotating part to be inspected in the placement area 3, align the detection head 5 with the part to be inspected, and use the control area to make the X-ray detector 4 and the detection head 5 perform inspection. When it is necessary to inspect the curved surface, first move the protective plate 7 to expose the bottom of the mounting block 6, then start the first electric push rod 8 to push the first connecting block 9, the second electric push rod 11, the fixed block 10 and the moving rod 13 to move downward, so that the fixed block 10 and the moving rod 13 move out of the mounting block 6 to the position below the detection head 5. Start the second electric push rod 11 to push the fixed block 10 and the moving rod 13 to move in the direction of the detection head 5. , so that the moving rod 13 is aligned with the detection head 5, so that the detection head 5 is located at the center of the installation opening, and then the first electric push rod 8 is contracted to drive the first connecting block 9, the second electric push rod 11, the fixed block 10 and the moving rod 13 to move upward, and the fixed block 10 and the moving rod 13 are moved upward to the outside of the detection head 5, so that the detection head 5 is located inside the installation opening and corresponds to the first shading plate 14 at the bottom of the installation opening and the fixed block 10. The irradiation area of ​​the detection head 5 is reduced by the through hole on the first shading plate 14, so as to ensure that the diffraction line is still a parallel narrow beam, and ensure the effectiveness of the diffraction geometry;

[0054] Step 2: When the X-ray irradiation area needs to be adjusted when inspecting other parts, start the third electric push rod 21 to drive the moving block 19 and the second light shielding plate 15 to move, and drive the first rack 221 to move along the inner wall of the fixed block 10 toward the moving rod 13 through the fourth electric push rod 222, and at the same time make the gear 223 drive the rotating rod to rotate along the inner wall of the fixed block 10, and drive the second rack 224 to drive the second connecting block 225 and the first light shielding plate 14 to move along the slide groove. When the second light shielding plate 15 moves through the moving opening to the inside of the mounting opening of the moving rod 13, the first light shielding plate 14 moves to the side of the fixed block 10 away from the fixed opening 12, exposing the fixed opening 12, so that the first light shielding plate 14 no longer blocks the fixed opening 12, and then use the second light shielding plate 15 to adjust the irradiation area of ​​the detection head 5;

[0055] Step 3: When the second shading plate 15 moves to the inside of the installation opening, the first rack 221 moves to both sides of the moving rod 13, and the first magnetic block 24 on one side thereof is magnetically connected to the second magnetic block 25 on the inner wall of the fixed block 10, so as to fix the position of the first rack 221, and then the fourth electric push rod 222 is started to shrink and no longer plug into the slot on one side of the third electric push rod 21, so that the first rack 221 is no longer connected to the third electric push rod 21, and then the third electric push rod 21 is contracted, and the moving block 19 and the second shading plate 15 are moved to the original position through the moving opening, and the first shading plate 14 is supported by the support block 23, and then the first electric telescopic rod 17 is started to drive the limiting block 1 8 moves to the inside of the moving groove, and then the second electric telescopic rod 201 contracts to drive the insertion rod 202, the movable block 203 and the fixed rod 204 to move to the inside of the moving groove, so that the insertion rod 202 and the fixed rod 204 no longer fix the second light shielding plate 15, and when the fixed rod 204 moves to the moving groove, it is inserted into the limiting hole of the limiting block 18 to limit the limiting block 18, so that the moving block 19 is no longer fixed to the second light shielding plate 15, but is fixed to the third light shielding plate 16, and when the third electric push rod 21 moves with the moving block 19, it can drive the third light shielding plate 16 to move, and move to the inside of the installation port of the moving rod 13 through the moving port, and adjust the irradiation area of ​​the detection head 5 again;

[0056] Step 4: When the detection head 5 is used for a long time, a large amount of heat will be generated. The third electric telescopic rod 26 is started to extend, and the first cold air box 27 is pushed to move to the top of the moving rod 13. The cold air inside the first cold air box 27 and the second cold air box 28 is then transported by the cold air pipe 29 through the control valve, so that the cold air can be transported to the inside of the installation port to cool the outside of the detection head 5, thereby increasing the service life of the detection head 5.

[0057] Working principle: when in use, fix the rotating part to be detected in the placement area 3, align the detection head 5 with the part to be detected, and use the control area to make the X-ray detector 4 and the detection head 5 perform detection. When it is necessary to detect the curved surface, first move the protective plate 7 to one side to expose the bottom of the mounting block 6, and then start the first electric push rod 8 to push the first connecting block 9, the second electric push rod 11, the fixed block 10 and the moving rod 13 to move downward, so that the fixed block 10 and the moving rod 13 move out of the mounting block 6 and move to the position below the detection head 5, and then start the second electric push rod 11 to push the fixed block 10 and the moving rod 13 to move in the direction of the detection head 5, so that the moving rod 13 is aligned with the detection head 5, so that the detection head 5 is located at the center of the installation port, and then the first electric push rod 8 is contracted to drive the first connecting block 9, the second electric push rod 11, the fixed block 10 and the moving rod 13 to move upward, so that the fixed block 10 and the moving rod 13 move upward to the outside of the detection head 5, thereby The detection head 5 is located inside the installation opening and corresponds to the first light shielding plate 14 at the bottom of the installation opening and the fixed block 10. The irradiation area of ​​the detection head 5 is reduced by the through hole on the first light shielding plate 14. When the X-ray irradiation area needs to be adjusted when detecting other parts, the third electric push rod 21 is started to drive the moving block 19 and the second light shielding plate 15 to move. The first rack 221 is driven by the fourth electric push rod 222 to move along the inner wall of the fixed block 10 toward the moving rod 13. At the same time, the gear 223 drives the rotating rod to rotate along the inner wall of the fixed block 10, and the second rack 224 drives the second connecting block 225 and the first light shielding plate 14 to move along the slide groove. When the second light shielding plate 15 moves through the moving opening to the inside of the installation opening of the moving rod 13, the first light shielding plate 14 moves to the side of the fixed block 10 away from the fixed opening 12, exposing the fixed opening 12, so that the first light shielding plate 14 no longer blocks the fixed opening 12, and then the second light shielding plate 15 is used to adjust the irradiation area of ​​the detection head 5.

[0058] When the second shading plate 15 moves to the inside of the installation opening, the first rack 221 moves to both sides of the moving rod 13, and the first magnetic block 24 on one side thereof is magnetically connected to the second magnetic block 25 on the inner wall of the fixed block 10, so as to fix the position of the first rack 221, and then the fourth electric push rod 222 is started to shrink and no longer plug into the slot on the side of the third electric push rod 21, so that the first rack 221 is no longer connected to the third electric push rod 21, and then the third electric push rod 21 is retracted, and the moving block 19 and the second shading plate 15 are moved to the original position through the moving opening, and the first shading plate 14 is supported by the support block 23, and then the first electric telescopic rod 17 is started to drive the limiting block 18 to move The inside of the movable groove, and then the second electric telescopic rod 201 contracts to drive the insertion rod 202, the movable block 203 and the fixed rod 204 to move to the inside of the movable groove, so that the insertion rod 202 and the fixed rod 204 no longer fix the second light shielding plate 15, and when the fixed rod 204 moves to the movable groove, it is inserted into the limiting hole of the limiting block 18 to limit the limiting block 18, so that the movable block 19 is no longer fixed to the second light shielding plate 15, but is fixed to the third light shielding plate 16, and when the third electric push rod 21 moves with the movable block 19, it can drive the third light shielding plate 16 to move, and move through the movable opening to the inside of the installation opening of the movable rod 13, and adjust the irradiation area of ​​the detection head 5 again.

[0059] When the detection head 5 is used for a long time, a large amount of heat will be generated. The third electric telescopic rod 26 is started to extend, pushing the first cold air box 27 to move to the top of the moving rod 13, and then the cold air inside the first cold air box 27 and the second cold air box 28 is transported by the cold air pipe 29 through the control valve, so that the cold air can be transported to the inside of the installation port to cool the outside of the detection head 5, thereby increasing the service life of the detection head 5.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A stress detection device for a rotating part of an aircraft engine, comprising a device box (1), characterized in that: A control area is provided on one side of the equipment box (1); an installation box (2) is fixedly installed on the top of the equipment box (1); a mounting frame is provided inside the installation box (2); an operating table is provided at the bottom of the installation frame and is fixedly installed on the inner wall of the bottom of the installation box (2); a placement area (3) is fixedly installed on the top of the operating table; an X-ray detector (4) is provided on the installation frame; a detection head (5) is provided at the bottom of one end of the X-ray detector; a mounting block (6) is fixedly installed on one side of the detection head (5) and at the bottom of the X-ray detector (4); the bottom of the inside of the mounting block (6) A protective plate (7) is slidably connected, a first electric push rod (8) is fixedly installed inside the mounting block (6), a first connecting block (9) is fixedly installed on one side of the first electric push rod (8), a fixing block (10) is arranged on one side of the first connecting block (9), a mounting groove is provided on one side of the first connecting block (9) close to the fixing block (10), a second electric push rod (11) is fixedly installed inside the mounting groove, one side of the second electric push rod (11) is fixedly installed on one side of the fixing block (10), a fixing opening (12) is provided on one side of the fixing block (10), and the fixing opening (12) is fixedly installed with a moving rod (13) inside, a mounting opening is provided in the middle of the moving rod (13), a first light shielding plate (14) is provided at the bottom of the fixed block (10) and at the top of the fixed opening (12), two moving openings are provided on one side of the moving rod (13), a second light shielding plate (15) is provided on one side of the two moving openings and inside the fixed block (10), a third light shielding plate (16) is provided at the bottom of the second light shielding plate (15), and first electric telescopic rods (17) are fixedly installed on the tops of both sides of the third light shielding plate (16), and the first electric telescopic rods (17) are fixedly installed on the tops of both sides of the third light shielding plate (16), and the first electric telescopic rods (17) are fixedly installed on the tops of the two ... A limiting block (18) is fixedly mounted on the top of the rod (17); movable blocks (19) are arranged on both sides of the first shading plate (14); a movable groove is provided inside the movable block (19); a fixed structure (20) is arranged inside the movable groove; the second shading plate (15) is connected to the movable block (19) via the fixed structure (20); a third electric push rod (21) is fixedly mounted on one side of the movable block (19); and movable structures (22) are arranged on the side of the third electric push rod (21) away from the second shading plate (15) and on both sides of the first shading plate (14).

2. The stress detection device for a rotating part of an aircraft engine according to claim 1, characterized in that: Through holes are provided in the middle of the first light shielding plate (14), the second light shielding plate (15) and the third light shielding plate (16); the second light shielding plate (15) is located on the top of the third light shielding plate (16); the third light shielding plate (16) is located on the top of the first light shielding plate (14); the diameter of the through hole on the second light shielding plate (15) is smaller than the diameter of the through hole on the third light shielding plate (16); the diameter of the through hole on the third light shielding plate (16) is smaller than the diameter of the through hole on the first light shielding plate (14); the second light shielding plate (15) and the third light shielding plate (16) are respectively arranged corresponding to the two movable openings; one side of the third electric push rod (21) is fixedly mounted on the inner wall of the fixed block (10); the movable opening on one side of the third light shielding plate (16) is flush with the inner wall of the bottom of the fixed block (10); the bottom of the third light shielding plate (16) is slidably connected to the inner wall of the bottom of the fixed block (10).

3. The stress detection device for a rotating part of an aircraft engine according to claim 1, characterized in that: Slide grooves are provided on both sides of the first light shielding plate (14) and at the bottom of the fixed block (10); the third electric push rod (21) is located on both sides of the second light shielding plate (15); a slot is provided at the telescopic end of the third electric push rod (21); a support block (23) is provided on one side of the second light shielding plate (15); the bottom of the support block (23) is fixedly mounted to the inner wall of the bottom of the fixed block (10); the support block (23) is located between the third electric push rod (21); one end of the second light shielding plate (15) is located on the support block (23); and the third light shielding plate (16) is located at the bottom end of the support block (23).

4. The stress detection device for a rotating part of an aircraft engine according to claim 3, characterized in that: The movable structure (22) comprises a first rack (221), a fourth electric push rod (222) is fixedly mounted on one side of the first rack (221), one end of the fourth electric push rod (222) is plugged into a slot, a gear (223) is meshed at the bottom of the first rack (221), a second rack (224) is meshed at the bottom of the gear (223), the second rack (224) passes through a slide groove and extends to the bottom of a fixed block (10), both sides of the second rack (224) are slidably connected to the slide groove, a second connecting block (225) is fixedly mounted on one end of the second rack (224), and one side of the second connecting block (225) is fixedly mounted to the first light shielding plate (14).

5. The stress detection device for a rotating part of an aircraft engine according to claim 4, characterized in that: One side of the first rack (221) and the second rack (224) are both slidably connected to the inner wall of the fixed block (10); the first rack (221) and the second rack (224) are located on both sides of the fourth electric push rod (222); a rotating rod is fixedly installed in the middle of the gear (223); one side of the rotating rod is rotatably connected to the inner wall of the fixed block (10); a first magnetic block (24) is fixedly installed on the side of the first rack (221) close to the moving rod (13); a second magnetic block (25) is fixedly installed on the inner wall of the fixed block (10) close to the moving rod (13); the second magnetic block (25) and the first rack (221) are both located on both sides of the moving rod (13); and the first magnetic block (24) and the second magnetic block (25) are magnetically connected.

6. The stress detection device for a rotating part of an aircraft engine according to claim 1, characterized in that: The fixed structure (20) comprises a second electric telescopic rod (201), one side of the second electric telescopic rod (201) being fixedly mounted to the inner wall of the movable groove, the other side of the second electric telescopic rod (201) being fixedly mounted with an insertion rod (202), one end of the insertion rod (202) being fixedly mounted with a movable block (203), one side of the movable block (203) being fixedly mounted with a fixing rod (204), a limiting hole being formed at the top end of the limiting block (18), and the fixing rod (204) being plugged into the limiting hole.

7. The stress detection device for a rotating part of an aircraft engine according to claim 6, characterized in that: A first movable opening is provided at the bottom of the movable block (19) and at the bottom of the movable groove, the first movable opening being arranged corresponding to the limiting block (18), a second movable opening is provided at a side of the movable block (19) close to the second light shielding plate (15), the fixing rod (204) is located at the bottom of the insertion rod (202), a fixing groove is provided at a side of the second light shielding plate (15) close to the movable block (19), and the insertion rod (202) and the fixing rod (204) pass through the second movable opening and are plugged into the fixing groove.

8. The stress detection device for a rotating part of an aircraft engine according to claim 1, characterized in that: An annular groove is provided on the inner wall of the top end of the moving rod (13), a third electric telescopic rod (26) is fixedly mounted inside the annular groove, a mounting plate is fixedly mounted on the top of the third electric telescopic rod (26), a first cold air box (27) is fixedly mounted on the top of the mounting plate, second cold air boxes (28) are fixedly mounted on both sides of the third electric telescopic rod (26) and inside the annular groove, cold air pipes (29) are fixedly mounted on one side of the first cold air box (27) and the second cold air box (28), and a control valve is provided at one end of each of the cold air pipes (29).

9. The stress detection device for a rotating part of an aircraft engine according to claim 8, characterized in that: The annular groove is located at the top of the movable opening, the first cold air box (27) is located inside the annular groove, the cold air pipe (29) and the control valve are distributed in a circular array with the center of the installation opening, the control valve on one side of the second cold air box (28) and one end of the cold air pipe (29) pass through the inner wall of the annular groove and extend to the inside of the installation opening, and the cold air pipe (29) and the control valve on one side of the first cold air box (27) are both located inside the annular groove.

10. A detection method using the stress detection device for a rotating part of an aircraft engine according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: fix the rotating part to be inspected in the placement area (3), align the inspection head (5) with the part to be inspected, and use the control area to make the X-ray detector (4) and the inspection head (5) perform inspection. When it is necessary to inspect the curved surface part, first move the protective plate (7) to expose the bottom of the mounting block (6), then start the first electric push rod (8) to push the first connecting block (9), the second electric push rod (11), the fixed block (10) and the moving rod (13) downward, so that the fixed block (10) and the moving rod (13) move out of the mounting block (6) to the position below the inspection head (5), and start the second electric push rod (11) to push the fixed block (10) and the moving rod (13) toward the direction of the inspection head (5). The first electric push rod (8) is moved to the outside of the detection head (5), so that the moving rod (13) is aligned with the detection head (5), so that the detection head (5) is located at the center of the installation opening, and then the first electric push rod (8) is contracted to drive the first connecting block (9), the second electric push rod (11), the fixed block (10) and the moving rod (13) to move upward, and the fixed block (10) and the moving rod (13) are moved upward to the outside of the detection head (5), so that the detection head (5) is located inside the installation opening and corresponds to the first shading plate (14) at the bottom of the installation opening and the fixed block (10), and the irradiation area of ​​the detection head (5) is reduced through the through hole on the first shading plate (14), so as to ensure that the diffraction line is still a parallel narrow beam, thereby ensuring the effectiveness of the diffraction geometry; Step 2: When the X-ray irradiation area needs to be adjusted when inspecting other parts, the third electric push rod (21) is started to drive the moving block (19) and the second light shielding plate (15) to move, and the first rack (221) is driven by the fourth electric push rod (222) to move along the inner wall of the fixed block (10) toward the moving rod (13), and at the same time, the gear (223) drives the rotating rod to rotate along the inner wall of the fixed block (10), and the second rack (224) drives the second connecting block (225) and the first light shielding plate (14) to move along the slide groove. When the second light shielding plate (15) moves through the moving opening to the inside of the mounting opening of the moving rod (13), the first light shielding plate (14) moves to the side of the fixed block (10) away from the fixed opening (12), exposing the fixed opening (12), so that the first light shielding plate (14) no longer blocks the fixed opening (12), and then the second light shielding plate (15) is used to adjust the irradiation area of ​​the detection head (5); Step 3: When the second shading plate (15) moves to the inside of the installation opening, the first rack (221) moves to both sides of the moving rod (13), and the first magnetic block (24) on one side thereof is magnetically connected to the second magnetic block (25) on the inner wall of the fixed block (10), thereby fixing the position of the first rack (221). Then, by starting the fourth electric push rod (222) to shrink and no longer plug into the slot on one side of the third electric push rod (21), the first rack (221) is no longer connected to the third electric push rod (21), and then the third electric push rod (21) shrinks and drives the moving block (19) and the second shading plate (15) to move to the original position through the moving opening, and supports the first shading plate (14) through the support block (23), and then starts the first electric telescopic rod (17) to drive the limiting block (18) ) is moved to the inside of the movable groove, and then the second electric telescopic rod (201) is retracted to drive the insertion rod (202), the movable block (203) and the fixed rod (204) to move to the inside of the movable groove, so that the insertion rod (202) and the fixed rod (204) no longer fix the second light shielding plate (15), and when the fixed rod (204) moves to the movable groove, it is inserted into the limiting hole of the limiting block (18) to limit the limiting block (18), so that the movable block (19) is no longer fixed to the second light shielding plate (15), but is fixed to the third light shielding plate (16), and when the third electric push rod (21) moves with the movable block (19), it can drive the third light shielding plate (16) to move, and move through the movable opening to the inside of the installation opening of the movable rod (13), and adjust the irradiation area of ​​the detection head (5) again; Step 4: When the detection head (5) is used for a long time, a large amount of heat will be generated. The third electric telescopic rod (26) is started to push the first cold air box (27) to move to the top of the moving rod (13). Then, the cold air inside the first cold air box (27) and the second cold air box (28) is transported through the cold air pipe (29) through the control valve, so that the cold air can be transported to the inside of the installation port to cool the outside of the detection head (5), thereby increasing the service life of the detection head (5).

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