A device for magnetic inspection of aircraft engine blades

Abstract

The invention discloses a device for magnetic inspection of aircraft engine blades, belonging to the field of magnetic inspection technology. The technical solution thereof includes a base, an upper end surface of a support column detachably connected with a workbench, an engine blade to be demagnetized is placed on the upper end surface of the workbench, two demagnetizers are respectively movably connected with two demagnetization support plates, so that the two demagnetizers can be adjusted to any angle, which is beneficial to demagnetizing various dead corners of the engine blades, avoiding the use of traditional demagnetization equipment to repeatedly demagnetize various dead corners of the engine blades, and is beneficial to improving the magnetic inspection efficiency; when it is necessary to process different surfaces of the engine blades, the motor is started, and the motor drives the support column and the workbench to rotate, so as to rotate the engine blades to the required demagnetization angle, and the device can rotate in any direction to adjust the demagnetization surface of the engine blades, so that multiple surfaces of the engine blades are demagnetized evenly and the demagnetization effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic inspection, and in particular to a device for magnetic inspection of aircraft engine blades. Background Art

[0002] Aircraft engine blades are very important parts of aircraft engines. They need to be subjected to magnetic particle inspection (magnetic inspection) piece by piece before assembly, and demagnetization is required after magnetic inspection to ensure the safe operation of aircraft engines. Magnetic particle inspection of aircraft engine blades is a special inspection that can detect defects such as cracks, inclusions, hairlines, folds, etc. In order to ensure the reliability of magnetic inspection and prevent accidents due to defects after parts are installed, magnetic inspection and demagnetization must be carried out in strict accordance with magnetic inspection procedures and standards. Magnetic inspection uses the magnetic field to magnetize the parts and generate a leakage magnetic field to attract magnetic powder to display defects in the blades.

[0003] Demagnetization refers to the removal of magnetized parts after magnetic inspection. Demagnetization is a necessary step after magnetic inspection, because residual magnetism will affect the subsequent processing and use of parts after delivery, especially residual magnetism will affect the normal operation of electronic equipment. In practice, accidents caused by residual magnetism affecting the normal operation of electronic equipment due to improper demagnetization of parts are not uncommon.

[0004] The existing equipment used for magnetic inspection of aircraft engine blades usually uses magnetic detection equipment that can provide a larger magnetic field strength for magnetic inspection, but this brings the problem of difficult demagnetization. Residual magnetism is easily left in the dead corners of the blades. It is necessary to use demagnetization equipment to repeatedly demagnetize the dead corners of the blades to avoid the adverse effects of residual magnetism on the use of parts and affect the efficiency of magnetic inspection. In addition, the position of the demagnetized blades in the existing equipment is relatively fixed and not easy to rotate, so that the demagnetization surface of the blades is not uniform, the demagnetization of the blades is not thorough, and the demagnetization effect is poor. Summary of the invention

[0005] In view of the above problems, the present invention proposes a device for magnetic inspection of aircraft engine blades to solve the above problems.

[0006] The present invention is implemented as follows: a device for magnetic inspection of aircraft engine blades, comprising a base, the left and right sides of the upper end surface of the base are rotatably connected with screw rods, the outer walls of the two screw rods are threadedly connected with sleeves, the opposite sides of the two sleeves are installed with electric push rods, the opposite sides of the two electric push rods are provided with demagnetizing support plates, the opposite sides of the two demagnetizing support plates are movably connected with demagnetizers, an installation cavity is opened inside the base, a bearing seat is arranged inside the installation cavity, a turntable is rotatably connected to the upper end surface of the bearing seat, a support column is fixedly connected to the upper end surface of the turntable, a workbench is detachably connected to the upper end surface of the support column, a motor is installed at the bottom end of the installation cavity, the output end of the motor passes through the interior of the bearing seat and extends to the top of the bearing seat and is fixedly connected to the support column, a mounting hole is opened on the left side of the interior of the base, the right end of the mounting hole is connected to the mounting cavity, a pull rod is inserted into the interior of the mounting hole, and the end of the pull rod close to the turntable is fixedly connected to a fixing plate, and the right end surface of the fixing plate abuts against the outer wall of the turntable.

[0007] In order to facilitate the staff to operate the pull rod to fix the turntable, as a preferred device for magnetic inspection of aircraft engine blades of the present invention, the end of the pull rod away from the turntable is fixedly connected with a pull head.

[0008] In order to make the inner wall of the fixing plate fit better with the outer wall of the turntable and improve the stability of the workbench, as a preferred device for magnetic inspection of aircraft engine blades of the present invention, the fixing plate is in a semicircular arc shape.

[0009] In order to prevent the turntable from rotating on its own and affecting the operation during the demagnetization process, as a preferred device for magnetic inspection of aircraft engine blades of the present invention, the fixing plate is fixedly connected to a limiting rod at one end close to the turntable, and the outer wall of the turntable is provided with a plurality of evenly distributed limiting holes.

[0010] In order to clean and cool the demagnetized blades, as a preferred device for magnetic inspection of aircraft engine blades of the present invention, fans are installed on both sides of the upper end surface of the base.

[0011] In order to facilitate the staff to manually control the height of the two demagnetizers, as a preferred device for magnetic inspection of aircraft engine blades of the present invention, the top ends of the outer walls of the two screw rods are both provided with manual knobs.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The device for magnetic inspection of aircraft engine blades, when in use, places the engine blade to be demagnetized on the upper end surface of the workbench, adjusts the height of the two demagnetizers according to the size of the engine blade, moves the two demagnetizers to the position where the engine blade is to be demagnetized, and drives the two demagnetizers to be close to or away from the engine blade by two electric push rods, which is convenient for use, and the two demagnetizers are movably connected with the two demagnetization support plates respectively, so that the two demagnetizers can be adjusted to any angle, which is conducive to demagnetizing various dead corners of the engine blade, avoids using traditional demagnetization equipment to repeatedly demagnetize various dead corners of the engine blade, and is conducive to improving the efficiency of magnetic inspection; when it is necessary to process different surfaces of the engine blade, the staff manually pulls the pull rod to separate the fixed plate from the turntable, starts the motor, and the motor drives the support column and the workbench to rotate, thereby rotating the engine blade to the required demagnetization angle, and the device can rotate in any direction to adjust the demagnetization surface of the engine blade, so that multiple surfaces of the engine blade are demagnetized evenly and the demagnetization effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front cross-sectional view of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the turntable of the present invention;

[0016] Figure 3 It is a front view of the present invention.

[0017] In the figure, 1. base; 2. screw rod; 3. sleeve; 4. electric push rod; 5. demagnetizing support plate; 6. demagnetizer; 7. installation cavity; 8. bearing seat; 9. turntable; 10. support column; 11. workbench; 12. motor; 13. installation hole; 14. pull rod; 15. fixing plate; 16. pull head; 17. limit rod; 18. limit hole; 19. fan; 20. manual knob. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0020] See also Figure 1-3 A device for magnetic inspection of aircraft engine blades, comprising a base 1, a screw rod 2 is rotatably connected to the left and right sides of the upper end surface of the base 1, a sleeve 3 is threadedly connected to the outer walls of the two screw rods 2, an electric push rod 4 is installed on the opposite side of the two sleeves 3, a demagnetizing support plate 5 is arranged on the opposite side of the two electric push rods 4, a demagnetizer 6 is movably connected to the opposite side of the two demagnetizing support plates 5, an installation cavity 7 is opened inside the base 1, a bearing seat 8 is arranged inside the installation cavity 7, a turntable 9 is rotatably connected to the upper end surface of the bearing seat 8, and the upper end of the turntable 9 A support column 10 is fixedly connected to the surface, and a workbench 11 is detachably connected to the upper end surface of the support column 10. A motor 12 is installed at the bottom end of the inner part of the installation cavity 7. The output end of the motor 12 passes through the interior of the bearing seat 8 and extends to the top of the bearing seat 8 and is fixedly connected to the support column 10. A mounting hole 13 is opened on the left side of the inner part of the base 1. The right end of the mounting hole 13 is connected to the installation cavity 7. A pull rod 14 is inserted into the inside of the mounting hole 13. A fixing plate 15 is fixedly connected to the end of the pull rod 14 close to the turntable 9, and the right end surface of the fixing plate 15 abuts against the outer wall of the turntable 9.

[0021] In this embodiment: when in use, the engine blade to be demagnetized is placed on the upper end surface of the workbench 11, and the height of the two demagnetizers 6 is adjusted according to the size of the engine blade, so that the two demagnetizers 6 are moved to the position where the engine blade is to be demagnetized, and the two electric push rods 4 drive the two demagnetizers 6 to be close to or away from the engine blade, which is convenient for use. The two demagnetizers 6 are movably connected with the two demagnetization support plates 5 respectively, so that the two demagnetizers 6 can be adjusted to any angle, which is conducive to demagnetizing various dead corners of the engine blade, avoiding the use of traditional demagnetization equipment for various dead corners of the engine blade. Repeated multiple demagnetization is performed, which is conducive to improving the efficiency of magnetic inspection; when it is necessary to process different surfaces of the engine blade, the staff manually pulls the pull rod 14 to separate the fixing plate 15 from the turntable 9, and starts the motor 12. The motor 12 drives the support column 10 and the workbench 11 to rotate, thereby rotating the engine blade to the required demagnetization angle. The device can rotate in any direction to adjust the demagnetization surface of the engine blade, so that multiple surfaces of the engine blade are demagnetized evenly and the demagnetization effect is good.

[0022] As a technical optimization solution of the present invention, one end of the pull rod 14 away from the turntable 9 is fixedly connected with a pull head 16 .

[0023] In this embodiment, the setting of the pull head 16 makes it convenient for the staff to operate the pull rod 14 to fix the turntable 9 .

[0024] As a technical optimization solution of the present invention, the fixing plate 15 is in a semicircular arc shape.

[0025] In this embodiment, the fixing plate 15 is in a semicircular shape, so that the inner wall of the fixing plate 15 is more closely fitted to the outer wall of the turntable 9 , which is beneficial to improving the stability of the workbench 11 .

[0026] As a technical optimization solution of the present invention, one end of the fixing plate 15 close to the turntable 9 is fixedly connected to a limiting rod 17 , and a plurality of evenly distributed limiting holes 18 are provided on the outer wall of the turntable 9 .

[0027] In this embodiment, the cooperation between the limiting rod 17 and the plurality of limiting holes 18 provides a limiting effect on the turntable 9, thereby effectively preventing the turntable 9 from rotating automatically and affecting the operation during the demagnetization process.

[0028] As a technical optimization solution of the present invention, fans 19 are installed on both the left and right sides of the upper end surface of the base 1.

[0029] In this embodiment, the two fans 19 are provided to cool the entire device and the engine blades, and at the same time, dust and impurities are prevented from entering the interior of the device, which is beneficial to increasing the service life of the device.

[0030] As a technical optimization solution of the present invention, a manual knob 20 is provided at the top end of the outer wall of the two screw rods 2.

[0031] In this embodiment, the two manual knobs 20 are provided to facilitate the staff to manually control the heights of the two demagnetizers 6 and move them to the position where the engine blades are to be demagnetized.

[0032] The working principle and use process of the present invention are as follows: when in use, first place the engine blade to be demagnetized on the upper end surface of the workbench 11, adjust the height of the two demagnetizers 6 according to the size of the engine blade, and drive the two demagnetizers 6 to be close to or away from the engine blade through the two electric push rods 4, which is convenient for use. The staff drives the two screw rods 2 to rotate by turning the two manual knobs 20, and the two sleeves 3 are respectively threadedly connected with the two screw rods 2, so that the two sleeves 3 on the outer walls of the two screw rods 2 move vertically up and down, thereby driving the two demagnetizers 6 to move to the position where the engine blade is to be demagnetized, and the two demagnetizers 6 are respectively movably connected with the two demagnetization support plates 5, so that the two demagnetizers 6 can be adjusted to any angle, which is useful It is beneficial to demagnetize the dead corners of the engine blades, avoids the use of traditional demagnetization equipment to repeatedly demagnetize the dead corners of the engine blades, and is beneficial to improving the efficiency of magnetic inspection; when it is necessary to process different surfaces of the engine blades, the staff manually pulls the pull rod 14 to separate the fixing plate 15 from the turntable 9, starts the motor 12, and the motor 12 drives the support column 10 and the workbench 11 to rotate, thereby rotating the engine blades to the required demagnetization angle, and then turns off the motor 12 to reset the pull rod 14 and fix the turntable 9. The device can rotate in any direction to adjust the demagnetization surface of the engine blades, so that multiple surfaces of the engine blades are demagnetized evenly and the demagnetization effect is good.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for magnetic inspection of aircraft engine blades, comprising a base (1), characterized in that: The left and right sides of the upper end surface of the base (1) are rotatably connected to screw rods (2), the outer walls of the two screw rods (2) are threadedly connected to sleeves (3), the opposite sides of the two sleeves (3) are each installed with an electric push rod (4), the opposite sides of the two electric push rods (4) are each provided with a demagnetizing support plate (5), the opposite sides of the two demagnetizing support plates (5) are each movably connected to a demagnetizer (6), the base (1) is provided with an installation cavity (7), the installation cavity (7) is provided with a bearing seat (8), the upper end surface of the bearing seat (8) is rotatably connected to a turntable (9), and the upper end surface of the turntable (9) is fixedly connected to a support column (10), The upper end surface of the support column (10) is detachably connected to a workbench (11); a motor (12) is installed at the bottom end of the interior of the installation cavity (7); an output end of the motor (12) passes through the interior of the bearing seat (8) and extends to the top of the bearing seat (8) and is fixedly connected to the support column (10); a mounting hole (13) is opened on the left side of the interior of the base (1); the right end of the mounting hole (13) is connected to the installation cavity (7); a pull rod (14) is inserted into the interior of the mounting hole (13); one end of the pull rod (14) close to the turntable (9) is fixedly connected to a fixing plate (15); the right end surface of the fixing plate (15) abuts against the outer wall of the turntable (9); One end of the pull rod (14) away from the rotating disk (9) is fixedly connected to a pull head (16); The fixing plate (15) is in a semicircular arc shape; One end of the fixing plate (15) close to the rotating disk (9) is fixedly connected to a limiting rod (17), and the outer wall of the rotating disk (9) is provided with a plurality of evenly distributed limiting holes (18).

2. The device for magnetic inspection of aircraft engine blades according to claim 1, characterized in that: Fans (19) are installed on both left and right sides of the upper end surface of the base (1).

3. The device for magnetic inspection of aircraft engine blades according to claim 1, characterized in that: The top ends of the outer walls of the two screw rods (2) are each provided with a manual knob (20).

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