Defect detection device for rotary gear of hoisting machinery

Abstract

The invention relates to the field of gear detection, in particular to a hoisting machinery rotary gear defect detection device which comprises a rotary supporting table, a rotary gear, a driving gear, a camera and a driving mechanism used for driving the rotary gear to rotate, a supporting plate is fixedly connected to the rotary supporting table, and the driving mechanism comprises a clamping plate installed on the supporting plate in a sliding mode. Rollers are rotatably mounted on the clamping plates and can be in contact with the rotary gears, the camera is fixedly connected to the clamping plates, driving parts for driving the clamping plates to move are mounted on the supporting plates, and rotating parts for driving the rollers to rotate are mounted on the clamping plates. According to the invention, the problem that the detection result of the gear is affected is solved.

Description

Technical Field

[0001] This invention relates to the field of gear inspection, and in particular to a defect detection device for rotary gears in lifting machinery. Background Technology

[0002] The crane slewing mechanism is a crucial component of a crane, responsible for its rotational movement. The working principle of the crane slewing mechanism mainly includes several key parts: a motor, a reducer, a slewing gear, a slewing disc, a brake, and a slewing transmission device. The slewing gear is the core component of the crane slewing mechanism and is crucial for achieving rotational movement. Through its meshing with the drive gear of the reducer, it enables the crane slewing mechanism to smoothly perform rotational movements.

[0003] For related technology, please refer to Chinese invention patent CN117330511A, which discloses a defect detection device for a rotary gear of lifting machinery. The device includes a rotary gear and a drive gear that mesh with each other. The upper side of the rotary gear is provided with an annular, wave-shaped first guide groove near the outer ring, and the upper side of the drive gear is provided with an annular, wave-shaped second guide groove near the outer ring. A first connecting block is provided on the upper side of the first guide groove, and a second connecting block is provided on the upper side of the second guide groove. The first and second connecting blocks are connected by a transverse telescopic rod. Sliding parts are installed on the lower side of both the first and second connecting blocks. Two sliding parts corresponding to the first and second connecting blocks are slidably installed in the first and second guide grooves, respectively. Detection cameras facing downwards are installed on the sides of both the first and second connecting blocks. The detection cameras move radially back and forth as the gear rotates to capture the outline of the gear.

[0004] Regarding the aforementioned technologies, if the rotary gear is inspected during the operation of the drive gear and the rotary gear, significant vibration and noise will be generated due to their meshing and continuous rotation. This vibration will cause the inspection camera to shake, resulting in blurred images and potentially affecting the inspection results. Summary of the Invention

[0005] To address the issue of the impact on gear inspection results, this invention provides a defect detection device for rotary gears in lifting machinery.

[0006] The present invention provides a defect detection device for rotary gears in lifting machinery, which adopts the following technical solution: A defect detection device for a slewing gear in lifting machinery includes a slewing support platform, a slewing gear, a drive gear, a camera, and a drive mechanism for driving the slewing gear to rotate. A support plate is fixedly connected to the slewing support platform. The drive mechanism includes a clamping plate slidably mounted on the support plate. A roller is rotatably mounted on the clamping plate, and the roller can contact the slewing gear. The camera is fixedly connected to the clamping plate. A drive component for moving the clamping plate is mounted on the support plate, and a rotating component for driving the roller to rotate is mounted on the clamping plate.

[0007] Preferably, there are two clamping plates, rollers, and cameras, and the two clamping plates, rollers, and cameras are symmetrically arranged on both sides of the rotary gear.

[0008] Preferably, the driving component includes a motor fixedly connected to the support plate, and a bidirectional screw is fixedly connected to the output shaft of the motor, with both ends of the bidirectional screw being threadedly connected to the clamping plate.

[0009] Preferably, the clamping plate has a roller groove, a roller shaft is fixedly connected to the roller, the roller shaft is rotatably installed in the roller groove, a support spring is fixedly connected between the clamping plate and the support plate, the rotating component includes a first rotating shaft rotatably installed on the clamping plate and a second rotating shaft rotatably installed in the roller groove, the first rotating shaft and the second rotating shaft are connected by a bevel gear set, the second rotating shaft and the roller shaft are connected by a bevel gear set, a rotating ring is sleeved on the bidirectional screw and rotatably connected to the clamping plate, the rotating ring is slidably connected to the bidirectional screw, and the rotating ring is connected to the first rotating shaft by a bevel gear set.

[0010] Preferably, a cleaning mechanism is installed on the support plate. The cleaning mechanism includes a cleaning base plate slidably installed on the support plate. A cleaning groove is formed on the cleaning base plate. A cleaning plate that contacts the teeth on a rotary gear is slidably installed in the cleaning groove. A cleaning spring is fixedly connected between the cleaning plate and the inner wall of the cleaning groove. A moving mechanism for driving the cleaning base plate to move is installed on the support plate.

[0011] Preferably, a spray pipe and a cleaning agent storage tank are fixedly connected to the support plate, and the spray pipe and the cleaning agent storage tank are connected by a first branch pipe. The spray pipe is provided with a plurality of nozzles facing the rotary gear, and a first valve is installed on the first branch pipe.

[0012] Preferably, the first valve component includes a first valve shaft rotatably mounted in the first branch pipe, a first valve fixedly connected to the first valve shaft, the first valve shaft extending to the outside of the first branch pipe and fixedly connected to a first gear, and a first rack meshing with the first gear fixedly connected to the cleaning base plate.

[0013] Preferably, the support plate is equipped with an oil injection mechanism, which includes an oil injection pipe and an oil storage tank fixedly connected to the support plate. The oil injection pipe and the oil storage tank are connected by a second branch pipe. The oil injection pipe is provided with a plurality of nozzles facing the rotary gear, and a second valve is installed on the second branch pipe.

[0014] Preferably, the second valve component includes a second valve shaft rotatably mounted in the second branch pipe, a second valve fixedly connected to the second valve shaft, the second valve shaft extending to the outside of the second branch pipe and fixedly connected to a second gear, and a second rack meshing with the second gear fixedly connected to the clamp plate.

[0015] Preferably, the cleaning plate is fitted with a cleaning sponge.

[0016] In summary, the present invention has at least the following beneficial technical effects: 1. When it is necessary to inspect the rotary gear, first close the rotary support table and the rotary gear, then start the drive component. The drive component moves the clamping plate, which in turn moves the roller, making the roller contact the rotary gear. Then start the rotating component, which drives the roller to rotate, and the roller drives the rotary gear to rotate. At this time, the camera can take pictures of the rotary gear. The picture taken by the camera is not easy to be blurry, which solves the problem of affecting the inspection results of the gear. 2. Start the moving mechanism, which drives the cleaning base plate to move. The cleaning base plate causes the cleaning plate to contact the teeth on the rotary gear. During the rotation of the rotary gear, the cleaning plate can clean the teeth on the rotary gear, thus avoiding the impact of oil on the gear test results. 3. Open the second valve, and the oil in the oil storage tank enters the oil injection pipe through the second branch pipe and is sprayed onto the rotary gear through the nozzle, so that the rotary gear can be re-lubricated. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the crane machinery rotary gear defect detection device according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the rotary gear according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the drive mechanism according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the fuel injection mechanism according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the rotating component according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the cleaning mechanism according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of the moving mechanism according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the structure of a tooth according to an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the locking mechanism according to an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached drawings: 1. Rotary support platform; 11. Rotary gear; 12. Drive gear; 13. Camera; 14. Support plate; 2. Drive mechanism; 21. Clamping plate; 22. Roller; 221. Roller shaft; 23. Motor; 24. Bidirectional screw; 25. First rotating shaft; 26. Second rotating shaft; 27. Rotary ring; 28. Support spring; 3. Cleaning mechanism; 31. Cleaning base plate; 32. Cleaning plate; 33. Cleaning spring; 34. Spray pipe; 35. Detergent storage tank; 36. First branch pipe; 37. First valve shaft; 371. 38. First rack; 4. Moving mechanism; 41. Moving shaft; 411. Moving gear; 42. First spring; 43. Gear plate; 44. Second spring; 45. Tooth; 46. First L-shaped rod; 47. Second L-shaped rod; 48. Third L-shaped rod; 49. Third spring; 5. Locking mechanism; 51. Locking spring; 52. Locking block; 53. Unlocking rod; 6. Injection mechanism; 61. Injection pipe; 62. Oil storage tank; 63. Second branch pipe; 64. Second valve shaft; 641. Second gear; 65. Second rack. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 The present invention will be described in further detail below.

[0028] This invention discloses a defect detection device for rotary gears in lifting machinery. (Refer to...) Figures 1 to 4The system includes a rotating support platform 1, a rotating gear 11, a drive gear 12, a camera 13, and a drive mechanism 2 for driving the rotating gear 11 to rotate. A support plate 14 is fixedly connected to the rotating support platform 1. The drive mechanism 2 includes a clamping plate 21 slidably mounted on the support plate 14, and a roller 22 rotatably mounted on the clamping plate 21. The roller 22 can contact the rotating gear 11. The camera 13 is fixedly connected to the clamping plate 21. A drive component for driving the clamping plate 21 to move is mounted on the support plate 14, and a rotating mechanism for driving the roller 22 to rotate is mounted on the clamping plate 21. When it is necessary to inspect the rotary gear 11, first close the rotary support platform 1 and the rotary gear 11, then start the drive component. The drive component moves the clamping plate 21, which in turn moves the roller 22, making the roller 22 contact the rotary gear 11. Then, start the rotating component, which drives the roller 22 to rotate, and the roller 22 drives the rotary gear 11 to rotate. At this time, the camera 13 can take pictures of the rotary gear 11. The picture taken by the camera 13 is not easy to blur, which solves the problem of affecting the inspection results of the gear.

[0029] There are two clamping plates 21, two rollers 22 and two cameras 13. The clamping plates 21, two rollers 22 and two cameras 13 are symmetrically arranged on both sides of the rotary gear 11; the rotary gear 11 takes pictures from the top and bottom sides, so that the rotary gear 11 can capture more comprehensive pictures.

[0030] Reference Figure 4 The driving component includes a motor 23 fixedly connected to the support plate 14. A bidirectional screw 24 is fixedly connected to the output shaft of the motor 23. The two ends of the bidirectional screw 24 are threadedly connected to the clamping plate 21 respectively. When the motor 23 is started, the motor 23 drives the bidirectional screw 24 to rotate, and the bidirectional screw 24 drives the two clamping plates 21 to move closer and further apart.

[0031] Reference Figures 3 to 5The clamping plate 21 has a roller groove, and a roller shaft 221 is fixedly connected to the roller 22. The roller shaft 221 is rotatably installed in the roller groove. A support spring 28 is fixedly connected between the clamping plate 21 and the support plate 14. The rotating component includes a first rotating shaft 25 rotatably installed on the clamping plate 21 and a second rotating shaft 26 rotatably installed in the roller groove. The first rotating shaft 25 and the second rotating shaft 26 are connected by a bevel gear set, and the second rotating shaft 26 is connected to the roller shaft 221 by a bevel gear set. A rotating ring 24 is sleeved on the bidirectional screw 24 and rotatably connected to the clamping plate 21. 7. The rotating ring 27 is slidably connected to the double-acting screw 24, and the rotating ring 27 is connected to the first rotating shaft 25 through a bevel gear set. During the rotation of the double-acting screw 24, the double-acting screw 24 drives the rotating ring 27 to rotate, the rotating ring 27 drives the first rotating shaft 25 to rotate, the first rotating shaft 25 drives the second rotating shaft 26 to rotate, the second rotating shaft 26 drives the roller shaft 221 to rotate, and the roller shaft 221 drives the roller 22 to rotate. When the roller 22 contacts the rotary gear 11, the clamping plate 21 stops moving, but the roller 22 can continue to rotate.

[0032] Reference Figures 3 to 6 A cleaning mechanism 3 is installed on the support plate 14. The cleaning mechanism 3 includes a cleaning base plate 31 that is slidably installed on the support plate 14. A cleaning groove is opened on the cleaning base plate 31. A cleaning plate 32 that contacts the teeth on the rotary gear 11 is slidably installed in the cleaning groove. A cleaning sponge is sleeved on the cleaning plate 32. A cleaning spring 33 is fixedly connected between the cleaning plate 32 and the inner wall of the cleaning groove. A moving mechanism 4 for driving the cleaning base plate 31 to move is installed on the support plate 14. When the moving mechanism 4 is activated, the moving mechanism 4 drives the cleaning base plate 31 to move. The cleaning base plate 31 drives the cleaning plate 32 to contact the teeth on the rotary gear 11. During the rotation of the rotary gear 11, the cleaning plate 32 can clean the teeth on the rotary gear 11, so as to avoid the oil stains affecting the test results of the gear.

[0033] A spray pipe 34 and a cleaning agent storage tank 35 are fixedly connected to the support plate 14. The spray pipe 34 and the cleaning agent storage tank 35 are connected by a first branch pipe 36. The spray pipe 34 is provided with multiple nozzles facing the rotary gear 11. A first valve is installed on the first branch pipe 36. When the first valve is opened, the cleaning agent in the cleaning agent storage tank 35 enters the spray pipe 34 through the first branch pipe 36 and is sprayed onto the rotary gear 11 through the nozzles, so that the oil stains on the rotary gear 11 are cleaned more thoroughly.

[0034] Reference Figure 6 and Figure 7The first valve component includes a first valve shaft 37 rotatably mounted in the first branch pipe 36, a first valve fixedly connected to the first valve shaft 37, the first valve shaft 37 extending to the outside of the first branch pipe 36 and fixedly connected to a first gear 371, and a first rack 38 meshing with the first gear 371 fixedly connected to the cleaning base plate 31; during the movement of the cleaning base plate 31, the cleaning base plate 31 drives the first rack 38 to move, the first rack 38 drives the first gear 371 to rotate, the first gear 371 drives the first valve shaft 37 to rotate, and the first valve shaft 37 drives the first valve to rotate, so that the cleaning agent can pass through the first branch pipe 36.

[0035] Reference Figure 3 and Figure 4 An oil spraying mechanism 6 is installed on the support plate 14. The oil spraying mechanism 6 includes an oil spraying pipe 61 fixedly connected to the support plate 14 and an oil storage tank 62. The oil spraying pipe 61 and the oil storage tank 62 are connected by a second branch pipe 63. The oil spraying pipe 61 is provided with multiple nozzles facing the rotary gear 11. A second valve is installed on the second branch pipe 63. When the second valve is opened, the oil in the oil storage tank 62 enters the oil spraying pipe 61 through the second branch pipe 63 and is sprayed onto the rotary gear 11 through the nozzles, so that the rotary gear 11 can be re-lubricated.

[0036] The second valve component includes a second valve shaft 64 rotatably mounted in the second branch pipe 63, a second valve fixedly connected to the second valve shaft 64, the second valve shaft 64 extending to the outside of the second branch pipe 63 and fixedly connected to a second gear 641, and a second rack 65 meshing with the second gear 641 fixedly connected to the clamping plate 21; during the movement of the clamping plate 21, the clamping plate 21 drives the second rack 65 to move, the second rack 65 drives the second gear 641 to rotate, the second gear 641 drives the second valve shaft 64 to rotate, and the second valve shaft 64 drives the second valve to rotate, so that the oil can pass through the second branch pipe 63.

[0037] Reference Figures 3 to 8The moving mechanism 4 includes a movable shaft 41 rotatably mounted on the support plate 14. The movable shaft 41 is connected to the bidirectional screw 24 via a bevel gear set. A movable gear 411 is fixedly connected to the movable shaft 41. A first spring 42 is fixedly connected between the cleaning base plate 31 and the support plate 14. A toothed plate 43 is slidably mounted on the cleaning base plate 31. A second spring 44 is fixedly connected between the toothed plate 43 and the cleaning base plate 31. Multiple teeth 45 that mesh with the movable gear 411 are hinged to the toothed plate 43. The hinge shaft installed in the toothed plate 45 is located on the side of the toothed plate 45 closer to the support plate 14. A torsion spring is sleeved on the hinge shaft installed in the toothed plate 45. During the rotation of the bidirectional screw 24, the bidirectional screw 24 drives the movable shaft 41 to rotate. The movable shaft 41 drives the movable gear 411 to rotate. The movable gear 411 drives the teeth 45 to move. The teeth 45 drive the toothed plate 43 to move. The toothed plate 43 drives the cleaning base plate 31 to move.

[0038] A first L-shaped rod 46 is slidably mounted on the cleaning base plate 31, and the first L-shaped rod 46 abuts against the tooth 45. A second L-shaped rod 47 is fixedly connected to the first L-shaped rod 46. A groove is provided on the rotary gear 11, and a third L-shaped rod 48 is slidably mounted in the groove. A third spring 49 is fixedly connected between the third L-shaped rod 48 and the inner wall of the groove. The second L-shaped rod 47 can abut against the third L-shaped rod 48. A first inclined surface is provided at the top of the second L-shaped rod 47, and a second inclined surface is provided at the bottom of the third L-shaped rod 48 to cooperate with the first inclined surface. As the cleaning base plate 31 moves the second L-shaped rod 47 closer to the rotary gear 11, the second L-shaped rod 47 abuts against the third L-shaped rod 48 and pushes the third L-shaped rod 48. The three L-shaped rods 48 move. During the rotation of the rotary gear 11, the rotary gear 11 drives the third L-shaped rod 48 to rotate, causing the third L-shaped rod 48 to separate from the second L-shaped rod 47. After the rotary gear 11 rotates one revolution, the rotary gear 11 drives the second inclined surface to contact the first inclined surface. The third L-shaped rod 48 can then push the second L-shaped rod 47 to move downward. The second L-shaped rod 47 drives the first L-shaped rod 46 to move. The first L-shaped rod 46 pushes the teeth 45 to move, causing the teeth 45 to separate from the moving gear 411. The first spring 42 drives the cleaning base plate 31 to return, causing the cleaning plate 32 to separate from the rotary gear 11. At this time, oil can still be sprayed onto the rotary gear 11.

[0039] Reference Figures 3 to 9A locking mechanism 5 is installed on the cleaning base plate 31. The cleaning base plate 31 has an installation groove. The locking mechanism 5 includes a locking spring 51 fixedly connected to the inner wall of the installation groove and a locking block 52 slidably installed in the installation groove. The locking spring 51 and the locking block 52 are fixedly connected. A locking groove for the locking block 52 to be inserted is provided on the toothed plate 43. The end of the locking block 52 away from the locking spring 51 is formed with a locking bevel that can contact the toothed plate 43. An unlocking rod 53 passes through the cleaning base plate 31 and can abut against the support plate 14. An unlocking groove for the unlocking rod 53 to be inserted is provided on the locking block 52. An unlocking ramp is formed on the inner wall of the locking groove near the locking spring 51, which can contact the unlocking rod 53. As the tooth 45 moves downward, the tooth 45 drives the tooth plate 43 to move. The tooth plate 43 pushes the locking block 52 to move and compresses the locking spring 51. When the locking block 52 is opposite to the locking groove, the locking spring 51 pushes the locking block 52 to insert into the locking groove, thereby locking the tooth plate 43. When the cleaning base plate 31 returns to the initial position, the unlocking rod 53 abuts against the support plate 14. The unlocking rod 53 pushes the locking block 52 out of the locking groove, thereby releasing the lock on the tooth plate 43.

[0040] The implementation principle of the defect detection device for a slewing gear in a lifting machinery according to an embodiment of the present invention is as follows: When it is necessary to detect the slewing gear 11, firstly, the slewing support platform 1 and the slewing gear 11 are closed, then the motor 23 is started. The motor 23 drives the bidirectional screw 24 to rotate, and the bidirectional screw 24 drives the two clamping plates 21 to move closer to each other. The clamping plates 21 drive the roller 22 to contact the slewing gear 11. At the same time, the bidirectional screw 24 drives the roller 22 to rotate, and the roller 22 drives the slewing gear 11 to rotate. The camera 13 captures images of the slewing gear 11. Furthermore, the bidirectional screw 24 drives the moving shaft 41 to rotate, and the moving shaft 41 drives the toothed plate 43 to move. The toothed plate 43 drives the cleaning base plate 31 to move, and the cleaning base plate 31 drives the cleaning plate 32 to contact the teeth on the slewing gear 11 to clean the teeth on the slewing gear 11. The first rack 38 is moved, which in turn drives the first valve to rotate. The cleaning agent in the cleaning agent storage tank 35 enters the spray pipe 34 through the first branch pipe 36 and is sprayed onto the rotary gear 11 through the nozzle. The clamping plate 21 moves the second rack 65, which in turn drives the second valve to rotate. The oil in the oil storage tank 62 enters the oil spray pipe 61 through the second branch pipe 63 and is sprayed onto the rotary gear 11 through the nozzle. After the rotary gear 11 rotates one revolution, it drives the third L-shaped rod 48 to push the second L-shaped rod 47 downward. The second L-shaped rod 47 pushes the teeth 45 to move, causing the teeth 45 to separate from the moving gear 411. The first spring 42 drives the cleaning base plate 31 to return, causing the cleaning plate 32 to separate from the rotary gear 11. At this time, oil can still be sprayed onto the rotary gear 11.

[0041] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A defect detection device for a slewing gear in lifting machinery, comprising a slewing support platform (1), a slewing gear (11), a drive gear (12), a camera (13), and a drive mechanism (2) for driving the slewing gear (11) to rotate, characterized in that: A support plate (14) is fixedly connected to the rotary support platform (1). The drive mechanism (2) includes a clamping plate (21) slidably mounted on the support plate (14). A roller (22) is rotatably mounted on the clamping plate (21). The roller (22) can contact the rotary gear (11). The camera (13) is fixedly connected to the clamping plate (21). A drive component for driving the clamping plate (21) to move is mounted on the support plate (14). A rotating component for driving the roller (22) to rotate is mounted on the clamping plate (21).

2. The defect detection device for slewing gears of lifting machinery according to claim 1, characterized in that: Two clamping plates (21), two rollers (22) and two cameras (13) are provided, and the two clamping plates (21), two rollers (22) and two cameras (13) are symmetrically arranged on both sides of the rotary gear (11).

3. The defect detection device for slewing gears of lifting machinery according to claim 2, characterized in that: The driving component includes a motor (23) fixedly connected to a support plate (14), and a bidirectional screw (24) fixedly connected to the output shaft of the motor (23). The two ends of the bidirectional screw (24) are respectively threaded to the clamping plate (21).

4. The defect detection device for slewing gears of lifting machinery according to claim 3, characterized in that: The clamping plate (21) has a roller groove, and a roller shaft (221) is fixedly connected to the roller (22). The roller shaft (221) is rotatably installed in the roller groove. A support spring (28) is fixedly connected between the clamping plate (21) and the support plate (14). The rotating component includes a first rotating shaft (25) rotatably installed on the clamping plate (21) and a second rotating shaft (26) rotatably installed in the roller groove. The first rotating shaft (25) and the second rotating shaft (26) are connected by a bevel gear set. The second rotating shaft (26) is connected to the roller shaft (221) by a bevel gear set. A rotating ring (27) is sleeved on the bidirectional screw (24) and rotatably connected to the clamping plate (21). The rotating ring (27) is slidably connected to the bidirectional screw (24). The rotating ring (27) is connected to the first rotating shaft (25) by a bevel gear set.

5. The defect detection device for slewing gears of lifting machinery according to claim 1, characterized in that: A cleaning mechanism (3) is installed on the support plate (14). The cleaning mechanism (3) includes a cleaning base plate (31) that is slidably installed on the support plate (14). A cleaning groove is provided on the cleaning base plate (31). A cleaning plate (32) that is in contact with the teeth on the rotary gear (11) is slidably installed in the cleaning groove. A cleaning spring (33) is fixedly connected between the cleaning plate (32) and the inner wall of the cleaning groove. A moving mechanism (4) for driving the cleaning base plate (31) to move is installed on the support plate (14).

6. The defect detection device for slewing gears of lifting machinery according to claim 5, characterized in that: A spray pipe (34) and a cleaning agent storage tank (35) are fixedly connected on the support plate (14). The spray pipe (34) and the cleaning agent storage tank (35) are connected by a first branch pipe (36). The spray pipe (34) is provided with multiple nozzles facing the rotary gear (11). A first valve is installed on the first branch pipe (36).

7. The defect detection device for slewing gears of lifting machinery according to claim 6, characterized in that: The first valve component includes a first valve shaft (37) rotatably mounted in the first branch pipe (36), a first valve fixedly connected to the first valve shaft (37), the first valve shaft (37) extending to the outside of the first branch pipe (36) and fixedly connected to a first gear (371), and a first rack (38) meshing with the first gear (371) fixedly connected to the cleaning base plate (31).

8. The defect detection device for slewing gears of lifting machinery according to claim 1, characterized in that: The support plate (14) is equipped with an oil injection mechanism (6). The oil injection mechanism (6) includes an oil injection pipe (61) fixedly connected to the support plate (14) and an oil storage tank (62). The oil injection pipe (61) and the oil storage tank (62) are connected by a second branch pipe (63). The oil injection pipe (61) is provided with multiple nozzles facing the rotary gear (11). The second branch pipe (63) is equipped with a second valve component.

9. A defect detection device for rotary gears of lifting machinery according to claim 8, characterized in that: The second valve component includes a second valve shaft (64) rotatably mounted in the second branch pipe (63), a second valve fixedly connected to the second valve shaft (64), the second valve shaft (64) extending to the outside of the second branch pipe (63) and fixedly connected to a second gear (641), and a second rack (65) meshing with the second gear (641) fixedly connected to the clamp plate (21).

10. A defect detection device for slewing gears of lifting machinery according to claim 5, characterized in that: A cleaning sponge is fitted onto the cleaning plate (32).

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