A flaw detection tool for planetary gears

Abstract

The present invention relates to the field of flaw detection technology, and discloses a flaw detection tool for planetary gears, comprising a main body, a connecting tube fixedly connected to the left side of the main body, and a button fixedly connected to the top inner wall of the main body. When the main body is started, the power transmitted to the electrode causes the electrode and a plurality of contact rods in the electrode to be magnetized. At this time, the current can act on the tooth top, tooth surface and tooth root of the tooth through the plurality of contact rods, so that the generated magnetic field can cover the entire tooth area, reducing the magnetic suspension on the tooth surface from flowing downward to the tooth root. Due to the contact between the electrode and the tooth surface, the magnetic field strength difference at the tooth top and the tooth root is large, resulting in a weak magnetic field at the tooth root and difficulty in driving the magnetic suspension at the tooth root to flow to the tooth surface to cover the tooth, resulting in the scar at the tooth root being difficult to display. This improves the comprehensiveness and accuracy of flaw detection while improving the detection efficiency of magnetic flaw detection.

Description

Technical Field

[0001] The present invention relates to the technical field of flaw detection, and in particular to a flaw detection tool for planetary gears. Background Art

[0002] Planetary gears are the core components of planetary gear transmission systems and are widely used in key equipment such as automotive gearboxes, wind power reducers, engineering machinery hydraulic motors, and aerospace transmission mechanisms. Their working environment is characterized by high loads, high speeds, and alternating stresses.

[0003] When using a magnetic particle flaw detector to inspect larger planetary gears, two electrodes are generally attached to the surface of the teeth on the planetary gear and magnetic suspension is sprayed. The magnetic field generated by the electrodes causes the magnetic suspension to be displayed at the flaws to achieve the purpose of flaw detection. Since the electrodes are flat and can only be attached to the surface of the teeth of the planetary gear, and there is a certain inclination between the tooth tops and the tooth roots of the teeth on the planetary gear, when the magnetic powder is sprayed onto the surface of the planetary gear, the magnetic suspension tends to flow to the tooth roots. When the magnetic field generated by the electrodes is used to inspect the tooth surface, it is easy to cause the magnetic field at the tooth top to be more concentrated and the magnetic field at the tooth root to be weaker, affecting the distribution and coverage of the magnetic suspension at the tooth root, making it difficult for the magnetic suspension to evenly cover the tooth surface and also making it difficult to form clear magnetic marks, affecting the comprehensiveness and accuracy of flaw detection.

[0004] The object of the present invention is to provide a flaw detection tool for planetary gears to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a flaw detection tool for planetary gears, comprising a main body, a connecting pipe fixedly connected to the left side of the main body, a button fixedly connected to the top inner wall of the main body, and further comprising:

[0007] A fixing mechanism is installed inside the main body to increase the contact area with the teeth on the planetary gear;

[0008] The rotating mechanism is installed on the side wall of the fixing mechanism and is used to ensure that the magnetic powder is evenly covered on the tooth surface of the planetary gear.

[0009] Furthermore, the subject includes:

[0010] A connecting component is installed at the bottom of the main body;

[0011] The contact component is installed at the bottom of the connecting component.

[0012] Furthermore, the fixing mechanism includes two oblique rods arranged at the bottom of the main body, and the fixing mechanism includes:

[0013] A movable assembly is installed on the side wall of the inclined rod;

[0014] An intermediate component is installed on a side wall of the mobile component;

[0015] Auxiliary components are installed on the side walls of the middle component.

[0016] Furthermore, the rotating mechanism includes a gear rod arranged at the bottom of the inclined rod, and the rotating mechanism includes:

[0017] The deformation component is installed at the bottom of the gear rod.

[0018] Furthermore, the connecting assembly includes two connecting plates 1 rotatably connected to the bottom of the main body, the bottom of the connecting plate 1 is rotatably connected to the connecting plate 2, and the front and back surfaces of the connecting plate 2 are fixedly connected to threaded rods;

[0019] Wherein, the outer surface of the threaded rod is threadedly connected with a tightening nut;

[0020] The contact assembly includes an electrode rotatably connected to the inside of the connecting plate 2, and a plurality of contact rods are slidably penetrated through the bottom inner wall of the electrode;

[0021] Among them, a spring plate is provided on the top of several contact rods inside the electrode, and the elastic end of the top of the spring plate is fixedly connected to the top inner wall of the electrode;

[0022] A rectangular groove is provided on one side of the electrode close to the middle of the main body.

[0023] Furthermore, one end of the oblique rod close to the spring plate is rotatably connected to the side wall of the spring plate;

[0024] The moving assembly includes a tooth plate rotatably connected to the end of the inclined rod away from the spring plate, and the outer surfaces of the two tooth plates are slidably connected to the transverse plate;

[0025] The front and back sides of the horizontal plate are fixedly connected to a connecting frame, and the side walls of the connecting frame are slidably connected to the outer surfaces of the two threaded rods;

[0026] The bottom of the connecting frame is fixedly connected with an obtuse angle frame.

[0027] Furthermore, the intermediate assembly includes two tilting rods rotatably connected to the bottom of the connecting frame, and the outer surfaces of the tilting rods are slidably connected to the bearing frame;

[0028] Wherein, the side wall of the tilt rod located inside the carrying frame is rotatably connected to the middle rod.

[0029] Furthermore, the auxiliary assembly includes a C-shaped frame rotatably connected between the two intermediate rods, and two movable plates are rotatably connected inside the C-shaped frame;

[0030] Wherein, a limit spring is fixedly connected between the two movable plates.

[0031] Furthermore, the gear rod is meshed and connected between the two gear plates, and the bottom of the gear rod rotates and penetrates the bottom outer wall of the transverse plate.

[0032] Furthermore, the deformation assembly includes a metal elastic plate fixedly connected to the bottom of the gear rod, the top of the metal elastic plate is fixedly connected to a return spring, and the top of the return spring is fixedly connected to the bottom inner wall of the cross plate;

[0033] The left side and the right side of the tooth plate are both rotatably connected with contact blocks.

[0034] The present invention has the following beneficial effects:

[0035] 1. The present invention uses a contact assembly. When the main body is started, the electricity transmitted to the electrode will magnetize the electrode and several contact rods in the electrode. At this time, the current can act on the tooth top, tooth surface and tooth root of the tooth through the several contact rods respectively, so that the generated magnetic field can cover the entire tooth area, reducing the magnetic suspension on the tooth surface from flowing downward to the tooth root. Due to the contact between the electrode and the tooth surface, the magnetic field strength at the tooth top and the tooth root is relatively different, resulting in a weak magnetic field at the tooth root and difficulty in driving the magnetic suspension at the tooth root to flow to the tooth surface to cover it, resulting in the scars at the tooth root being difficult to show. While improving the comprehensiveness and accuracy of flaw detection, the detection efficiency of magnetic flaw detection is improved.

[0036] 2. The present invention uses a movable component and an auxiliary component. When the C-shaped frame continues to move upward, the movable plate is blocked by the metal elastic plate and rotates outward. At this time, the magnetic suspension between the two movable plates will flow outward when the movable plates rotate. At this time, the flowing magnetic suspension will flow back to the top area of ​​the teeth and flow downward again when the movable plates rotate, reducing the downward flow of the magnetic suspension and the accumulation at the bottom of the tooth root, improving the uniformity of the magnetic suspension covering the tooth surface on the planetary gear, and at the same time, reducing the accumulation of the magnetic suspension at the tooth root due to the downward flow of the magnetic suspension, which affects the display of the magnetic marks at the tooth root and affects the judgment of the flaw detection results, reducing the misjudgment and missed judgment of the tooth marks on the surface of the planetary gear teeth, and improving the flaw detection efficiency.

[0037] 3. The present invention uses a deformation component and a contact component. When the metal elastic plate is deformed, the deformation of the metal elastic plate will drive the two contact blocks to slide downward and insert the contact block between the two teeth on the planetary gear. At this time, the metal elastic plate and the contact block will be in a perpendicular state to the electrode. When the electrode is energized by current and generates magnetism, the magnetism will be transmitted to the metal elastic plate and the contact block. At this time, when the contact block is vertically arranged to the electrode, the magnetic field can form a cross magnetic field on the surface of the planetary gear. Through the formation of the cross magnetic field, the staff can reduce the inspection steps of stopping the main work after inspecting the surface of the planetary gear through two electrodes and then performing the inspection again perpendicular to the first inspection. This reduces the staff's frequent start-stop and repositioning inspection during inspection, while improving the inspection efficiency and inspection stability of flaw detection.

[0038] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 It is a schematic diagram of the overall partial cross-sectional structure of the present invention;

[0042] Figure 3 It is a schematic diagram of the main body of the present invention;

[0043] Figure 4 A schematic diagram of a contact assembly of the present invention;

[0044] Figure 5 A schematic diagram of a mobile assembly of the present invention;

[0045] Figure 6 It is a partial cross-sectional schematic diagram of the deformation component of the present invention;

[0046] Figure 7 For the present invention Figure 5 A in the middle is an enlarged schematic diagram;

[0047] Figure 8 is a schematic diagram of the auxiliary components of the present invention;

[0048] Figure 9 Schematic diagram of the deformed state of the deformable component of the present invention.

[0049] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0050] In the figure: 1. Main body; 101. Connecting pipe; 11. Connecting assembly; 111. Connecting plate 1; 112. Connecting plate 2; 113. Tightening nut; 12. Contact assembly; 121. Electrode; 122. Contact rod; 123. Spring plate; 2. Fixing mechanism; 201. Inclined rod; 21. Moving assembly; 211. Tooth plate; 212. Horizontal plate; 213. Connecting frame; 214. Obtuse-angle frame; 22. Intermediate assembly; 221. Inclined rod; 222. Carrying frame; 223. Intermediate rod; 23. Auxiliary assembly; 231. C-shaped frame; 232. Movable plate; 3. Rotating mechanism; 301. Tooth rod; 31. Deformation assembly; 311. Metal elastic plate; 312. Contact block. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] See also Figures 1-9 As shown, the present invention is a flaw detection tool for planetary gears, comprising a main body 1, a connecting pipe 101 is fixedly connected to the left side of the main body 1, a button is fixedly connected to the top inner wall of the main body 1, and further comprising;

[0053] The fixing mechanism 2 is installed inside the main body 1 and is used to increase the contact area with the teeth on the planetary gear;

[0054] The rotating mechanism 3 is installed on the side wall of the fixing mechanism 2 and is used to ensure that the magnetic powder is evenly covered on the tooth surface of the planetary gear.

[0055] Body 1 includes:

[0056] The connecting component 11 is installed at the bottom of the main body 1;

[0057] The contact component 12 is installed at the bottom of the connecting component 11 .

[0058] The fixing mechanism 2 includes two inclined rods 201 arranged at the bottom of the main body 1. The fixing mechanism 2 includes:

[0059] The moving assembly 21 is installed on the side wall of the inclined rod 201;

[0060] The intermediate component 22 is installed on the side wall of the moving component 21;

[0061] The auxiliary component 23 is installed on the side wall of the middle component 22 .

[0062] The rotating mechanism 3 includes a gear rod 301 provided at the bottom of the inclined rod 201. The rotating mechanism 3 includes:

[0063] The deformation component 31 is installed at the bottom of the gear rod 301 .

[0064] The connecting assembly 11 includes two connecting plates 111 rotatably connected to the bottom of the main body 1. The bottom of the connecting plate 111 is rotatably connected to the connecting plate 2 112. The front and back of the connecting plate 2 112 are fixedly connected to threaded rods.

[0065] The outer surface of the threaded rod is threadedly connected with a tightening nut 113;

[0066] The contact assembly 12 includes an electrode 121 rotatably connected to the interior of the second connecting plate 112 , and a plurality of contact rods 122 are slidably penetrated through the bottom inner wall of the electrode 121 ;

[0067] Among them, a spring plate 123 is provided on the top of the plurality of contact rods 122 inside the electrode 121, and the elastic end of the top of the spring plate 123 is fixedly connected to the top inner wall of the electrode 121;

[0068] A rectangular groove is provided on one side of the electrode 121 near the middle of the main body 1. First, connect the connecting tube 101 to the external power supply and, as required, place the connecting frame 213 onto the two threaded rods. The connecting frame 213 is then secured by tightening the nuts 113. After cleaning the surface of the planetary gear, the device is placed on the surface of the planetary gear, ensuring that the two electrodes 121 are in contact with the planetary gear. The end of the inclined rod 201 near the spring plate 123 is rotatably connected to the side wall of the spring plate 123.

[0069] The moving assembly 21 includes a tooth plate 211 rotatably connected to the end of the inclined rod 201 away from the spring plate 123, and the outer surfaces of the two tooth plates 211 are slidably connected to the horizontal plate 212;

[0070] The front and back sides of the horizontal plate 212 are fixedly connected to a connecting frame 213, and the side walls of the connecting frame 213 are slidably connected to the outer surfaces of the two threaded rods;

[0071] The bottom of the connecting frame 213 is fixedly connected to the obtuse-angle frame 214. Since the length of the supporting frame 222 is lower than the electrode 121, before the electrode 121 contacts the teeth on the surface of the planetary gear, the supporting frame 222 will contact the root part between the two teeth. After spraying the magnetic suspension on the surface of the planetary gear, the main body 1 is pressed downward to make the main body 1 slide downward. When the main body 1 slides downward, the connecting frame 213 will be driven to slide downward through the threaded rod on the connecting plate 2 112.

[0072] The intermediate component 22 includes two tilting rods 221 rotatably connected to the bottom of the connecting frame 213, and the outer surface of the tilting rods 221 is slidably connected to the supporting frame 222;

[0073] Among them, the side wall of the tilt rod 221 located inside the supporting frame 222 is rotatably connected to the middle rod 223. Since the bottom of the supporting frame 222 is in contact with the root part between the two teeth, when the connecting frame 213 slides downward, the middle rod 223 connected to it will be pushed to slide through the two supporting frames 222.

[0074] The auxiliary assembly 23 includes a C-shaped frame 231 rotatably connected between the two intermediate rods 223 , and two movable plates 232 are rotatably connected inside the C-shaped frame 231 ;

[0075] Among them, a limit spring is fixedly connected between the two movable plates 232. When the two intermediate rods 223 are pushed and slide, they will push the C-shaped frame 231 to slide upward. Since the C-shaped frame 231 is at the root of the tooth before spraying the magnetic suspension, after spraying the magnetic suspension, the magnetic suspension will flow downward due to the inclination of the tooth surface.

[0076] The gear rod 301 is meshed and connected between the two gear plates 211 , and the bottom of the gear rod 301 rotates and penetrates the bottom outer wall of the transverse plate 212 .

[0077] The deformation assembly 31 includes a metal elastic plate 311 fixedly connected to the bottom of the gear rod 301, and a return spring is fixedly connected to the top of the metal elastic plate 311, and the top of the return spring is fixedly connected to the bottom inner wall of the cross plate 212; wherein, the left and right sides of the gear plate 211 are rotatably connected to the contact blocks 312, and since the two movable plates 232 are in an inclined setting on the C-shaped frame 231, when the C-shaped frame 231 continues to move upward, the movable plates 232 are blocked by the metal elastic plate 311 and rotate outward.

[0078] During use, the staff first tightens the connecting component 11 and the electrode 121, then connects the connecting pipe 101 to the external power supply equipment, and puts the connecting frame 213 on the two threaded rods as required, and then fixes the connecting frame 213 by tightening the tightening nut 113. After that, the staff cleans the surface of the planetary gear and places the device on the surface of the planetary gear so that the two electrodes 121 contact the planetary gear. Then, the staff sprays magnetic suspension on the surface of the planetary gear and presses the button at the bottom of the main body 1. At this time, the electricity inside the main body 1 will be transmitted to the electrode 121 through the connecting component 11, so that there is a good magnetic circuit between the electrode 121 and the planetary gear, and the planetary gear is magnetized. When there are scratches on the surface of the planetary gear, the magnetic suspension will form magnetic marks at the scratches under the action of magnetic force, thereby reflecting the scratches on the surface of the planetary gear and completing the purpose of flaw detection.

[0079] Since the length of the carrying frame 222 is lower than the electrode 121, before the electrode 121 contacts the teeth on the surface of the planetary gear, the carrying frame 222 will contact the root portion between the two teeth. After that, after spraying the magnetic suspension on the surface of the planetary gear, the main body 1 is pressed downward to make the main body 1 slide downward. When the main body 1 slides downward, the threaded rod on the connecting plate 2 112 drives the connecting frame 213 to slide downward. Since the bottom of the carrying frame 222 contacts the root portion between the two teeth, when the connecting frame 213 slides downward, it will pass through the two carrying The frame 222 pushes the middle rod 223 connected to it to slide. When the two middle rods 223 are pushed and slide, they will push the C-shaped frame 231 to slide upward. Since the C-shaped frame 231 is at the root of the tooth before spraying the magnetic suspension, after spraying the magnetic suspension, the magnetic suspension will flow downward due to the inclination of the tooth surface. When the magnetic suspension flows downward, it will flow between the C-shaped frame 231 and the two movable plates 232. When the middle rod 223 pushes the C-shaped frame 231 to slide upward, the sliding of the C-shaped frame 231 will cause the magnetic suspension flowing into the C-shaped frame 231 to When the electrodes 121 come into contact with the teeth on the surface of the planetary gear, the contact rods 122 slide upwards under the obstruction of the teeth. When the spring plate 123 slides upwards, the gear rod 301 is driven to rotate through the gear plate 211. The gear rod 301 is at the top of the C-shaped frame 231 when rotating. Since the two movable plates 232 are tilted on the C-shaped frame 231, when the C-shaped frame 231 continues to move upwards, the movable plates 232 are obstructed by the metal elastic plate 311 and rotate outwards. At this time, the two movable plates 232 The magnetic suspension between the gears will flow outward when the movable plate 232 rotates. At this time, the flowing magnetic suspension will flow back to the top area of ​​the tooth and flow downward again when the movable plate 232 rotates, reducing the accumulation of the magnetic suspension at the bottom of the tooth root due to the downward flow, improving the uniformity of the magnetic suspension covering the tooth surface on the planetary gear, and at the same time, reducing the accumulation of the magnetic suspension at the tooth root due to the downward flow of the magnetic suspension, which affects the display of the magnetic marks at the tooth root and the judgment of the flaw detection results, thereby reducing the misjudgment and missed judgment of the tooth marks on the surface of the planetary gear teeth and improving the flaw detection efficiency.When the main body 1 is pressed downward so that the electrode 121 contacts the teeth on the surface of the planetary gear, the part of the contact rod 122 extending from the bottom of the electrode 121 will be blocked by the teeth and slide upward toward the inside of the electrode 121. Since several contact rods 122 can slide in an offset manner, when some contact rods 122 are blocked by the top surface of the teeth on the planetary gear and slide upward, they will push the spring plate 123 to slide upward synchronously. At the same time, when some contact rods 122 slide upward, the remaining contact rods 122 will fit on the tooth surface of the teeth. At this time, the contact rod 122 at the edge will contact the root of the teeth on the planetary gear. When the main body 1 is started, the force transmitted to the electrode 121 The electricity on the tooth will magnetize the electrode 121 and the several contact rods 122 in the electrode 121. At this time, the current can act on the tooth top, tooth surface and tooth root of the tooth through the several contact rods 122 respectively, so that the generated magnetic field can cover the entire tooth area, reducing the magnetic suspension on the tooth surface from flowing downward to the tooth root. Due to the contact between the electrode 121 and the tooth surface, the magnetic field strength at the tooth top and the tooth root is relatively different, resulting in a weak magnetic field at the tooth root and not easy to drive the magnetic suspension flow at the tooth root to cover the tooth surface, resulting in the scars at the tooth root not being easy to show. While improving the comprehensiveness and accuracy of flaw detection, the detection efficiency of magnetic flaw detection is improved. When the gear rod 301 drives the metal elastic plate 311 to rotate, the two ends of the metal elastic plate 311 will be blocked by the inclined surface of the obtuse frame 214 and deformed. Figure 9 As shown in the figure, when the metal elastic plate 311 is deformed, the deformation of the metal elastic plate 311 will drive the two contact blocks 312 to slide downward and insert the contact block 312 between the two teeth on the planetary gear. At this time, the metal elastic plate 311 and the contact block 312 will be in a perpendicular state to the electrode 121. When the electrode 121 is energized with current and generates magnetism, the magnetism will be transmitted to the metal elastic plate 311 and the contact block 312. At this time, when the contact block 312 is vertically arranged to the electrode 121, the magnetic field can form a cross magnetic field on the surface of the planetary gear. Through the formation of the cross magnetic field, the staff can reduce the inspection steps of stopping the main body 1 after inspecting the surface of the planetary gear through the two electrodes 121 and then performing the inspection again perpendicular to the first inspection. This reduces the staff's frequent start-stop and repositioning inspection during inspection, while improving the inspection efficiency and inspection stability of flaw detection.

[0080] When the planetary gear is not being tested, the metal elastic plate 311 will reset under the torsional reset of the elastic potential energy of the reset spring. The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the invention to only the specific implementation methods described. Obviously, many modifications and variations can be made based on the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A flaw detection tool for planetary gears, comprising a main body (1), a connecting pipe (101) being fixedly connected to the left side of the main body (1), and a button being fixedly connected to the top inner wall of the main body (1), characterized in that: Also includes; A fixing mechanism (2), the fixing mechanism (2) being installed inside the main body (1) and used to increase the contact area with the teeth on the planetary gear; A rotating mechanism (3), the rotating mechanism (3) being mounted on a side wall of the fixing mechanism (2) and configured to uniformly cover the tooth surfaces of the planetary gear with magnetic powder; The main body (1) includes: A connecting component (11), wherein the connecting component (11) is installed at the bottom of the main body (1); A contact assembly (12), wherein the contact assembly (12) is mounted on the bottom of the connecting assembly (11); The fixing mechanism (2) comprises two oblique rods (201) arranged at the bottom of the main body (1), and further comprises: A moving assembly (21), wherein the moving assembly (21) is mounted on a side wall of the oblique rod (201); An intermediate component (22), wherein the intermediate component (22) is mounted on a side wall of the moving component (21); An auxiliary component (23), the auxiliary component (23) being mounted on a side wall of the intermediate component (22); The connecting assembly (11) comprises two connecting plates (111) rotatably connected to the bottom of the main body (1), the bottom of the connecting plate (111) is rotatably connected to the connecting plate (112), and the front and back surfaces of the connecting plate (112) are fixedly connected to threaded rods; The contact assembly (12) includes an electrode (121) rotatably connected to the inside of the second connecting plate (112), and a plurality of contact rods (122) are slidably penetrated through the bottom inner wall of the electrode (121); A spring plate (123) is provided on the top of a plurality of contact rods (122) located inside the electrode (121), and the elastic end of the top of the spring plate (123) is fixedly connected to the top inner wall of the electrode (121); The moving assembly (21) includes a tooth plate (211) rotatably connected to an end of the inclined rod (201) away from the spring plate (123), and the outer surfaces of the two tooth plates (211) are slidably connected to a transverse plate (212); The front and back sides of the transverse plate (212) are both fixedly connected to a connecting frame (213), and the side walls of the connecting frame (213) are slidably connected to the outer surfaces of the two threaded rods; The bottom of the connecting frame (213) is fixedly connected to an obtuse-angle frame (214); The intermediate component (22) comprises two tilting rods (221) rotatably connected to the bottom of the connecting frame (213), and the outer surfaces of the tilting rods (221) are slidably connected to the bearing frame (222); Wherein, the side wall of the tilting rod (221) located inside the carrying frame (222) is rotatably connected to the middle rod (223); The auxiliary assembly (23) comprises a C-shaped frame (231) rotatably connected between the two intermediate rods (223), and two movable plates (232) are rotatably connected inside the C-shaped frame (231); Wherein, a limit spring is fixedly connected between the two movable plates (232).

2. The flaw detection tool for planetary gears according to claim 1, characterized in that: The rotating mechanism (3) comprises a gear rod (301) arranged at the bottom of the inclined rod (201), and the rotating mechanism (3) comprises: A deformation component (31), wherein the deformation component (31) is installed at the bottom of the gear rod (301).

3. The flaw detection tool for planetary gears according to claim 2, characterized in that: The outer surface of the threaded rod is threadedly connected to a tightening nut (113), and a rectangular groove is formed on one side of the electrode (121) close to the middle of the main body (1).

4. The flaw detection tool for planetary gears according to claim 3, characterized in that: One end of the oblique rod (201) close to the spring plate (123) is rotatably connected to the side wall of the spring plate (123).

5. The flaw detection tool for planetary gears according to claim 4, characterized in that: The gear rod (301) is meshed and connected between the two gear plates (211), and the bottom of the gear rod (301) rotates and penetrates the bottom outer wall of the transverse plate (212).

6. The flaw detection tool for planetary gears according to claim 5, characterized in that: The deformation assembly (31) comprises a metal elastic plate (311) fixedly connected to the bottom of the gear rod (301), a return spring fixedly connected to the top of the metal elastic plate (311), and a top of the return spring fixedly connected to the bottom inner wall of the transverse plate (212); The left side and the right side of the tooth plate (211) are both rotatably connected to contact blocks (312).

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