Gear run-out inspection equipment

Abstract

The invention relates to the technical field of gear run-out detection, in particular to gear run-out detection equipment which comprises a protective shell and a detection gear, an interlayer is arranged at the bottom of the protective shell, a detection groove is formed in the top of the protective shell, and a protruding plate is slidably connected to the top of the protective shell and located on the outer side of the detection groove. A first limiting strip is fixedly connected to the side, close to the detection groove, of the protruding plate, a detection device is arranged on the inner side of the protection shell, a rotating assembly is arranged on one side of the detection device, and a detection assembly is arranged on the side, away from the rotating assembly, of the detection device. The first sliding plate is driven to rotate by one tooth groove angle on the rotating ring by using the first push strip and the second push strip, so that the detection gear which is irregularly moved and conveyed to the detection groove is accurately positioned, and the radial run-out detection is performed on the tooth groove of the detection gear by using the left-right reciprocating motion of the probe.

Description

Technical Field

[0001] The present invention relates to the technical field of gear runout detection, and more specifically, to a gear runout inspection device. Background Art

[0002] In a mechanical transmission system, as a core component, the manufacturing precision and performance stability of gears are directly related to the efficiency and reliability of the entire transmission system. The runout of a gear, that is, the radial or axial deviation generated during the rotation of the gear, is one of the important indicators for measuring the manufacturing quality of gears. Therefore, accurate detection of gear runout is a key step to ensure the performance of gears and their associated transmission systems;

[0003] Chinese Patent Publication No.: CN116878352B discloses a gear runout inspection instrument, which includes a frame, a jacking and rotating support mechanism installed at the bottom of the frame, a limiting mechanism installed at the top of the frame, and a detection and measurement mechanism for detecting and measuring the outer diameter and end face of the gear. The detection and measurement mechanism includes a mounting plate, a rotating seat rotatably installed on the mounting plate, a sleeve rotatably installed near the frame on the rotating seat, a detection rod slidably installed in the sleeve, a mounting seat fixedly installed on the rotating seat on the side away from the frame, a first detection gauge horizontally installed on the mounting seat, and a second detection gauge vertically installed on the mounting seat. A rotation driving cylinder is hingedly installed on the mounting seat, a first spring is sleeved on the detection rod, and a cantilever frame is installed on the sleeve. Its structural layout is more reasonable, and it can measure the outer diameter and end face dimensions of gears, improve the operation convenience while reducing the amount of manual operation, and effectively improve the gear detection efficiency and detection accuracy;

[0004] Although the above patent uses the first detection gauge and the second detection gauge to detect the outer diameter and flatness of gears, which can reduce the amount of manual operation and improve efficiency, considering that there are many existing types of gears,

[0005] (To achieve the mutual switching between gear radial runout measurement and end face runout measurement, and the coherence of gear conveying)

[0006] In view of this, we propose a gear runout inspection device. Summary of the Invention

[0007] The purpose of the present invention is to provide a gear runout inspection device to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides a gear runout inspection device, including a protective shell and a detection gear. A sandwich layer is provided at the bottom of the protective shell, and a detection groove is provided at the top of the protective shell. A plurality of electric telescopic rods are fixedly connected to the inner wall of the bottom of the detection groove. A raised plate is slidably connected to the top of the protective shell and located outside the detection groove. A first limiting strip is fixedly connected to the side of the raised plate close to the detection groove. A detection device is provided inside the protective shell. A rotating assembly is provided on one side of the detection device, and a detection assembly is provided on the side of the detection device far from the rotating assembly;

[0009] The detection device includes a fixed frame. A rotating ring is rotatably connected to the top of the fixed frame, and a snap strip for fixing the detection gear is fixedly connected to the top of the rotating ring;

[0010] The detection assembly includes a turntable assembly for reciprocating detection.

[0011] As a preference of the present invention, the detection device includes a first motor, the first motor is fixedly connected inside the sandwich layer, the output end of the first motor is fixedly connected to the bottom of the rotating ring, a second limiting strip is fixedly connected to the bottom of the rotating ring, and a column is fixedly connected to the center position of the top of the rotating ring, wherein:

[0012] The distribution of the second limiting strip is the same as that of the snap strip, and a solenoid valve is telescopically connected to the lower end position of the raised plate, and the raised plate is electromagnetically connected to the rotating ring.

[0013] As a preference of the present invention, the fixed frame is fixedly connected to the inner wall bottom of the protective shell. Sliding strips are slidably connected to the inner sides of both ends of the fixed frame. A first rack is fixedly connected to the top of the sliding strips. Sliders are also slidably connected to the inner sides of both ends of the fixed frame. A probe is fixedly connected to one side of the slider. An extension plate is fixedly connected to the side of the slider far from the probe, and a second rack is fixedly connected to the bottom of the extension plate.

[0014] As a preference of the present invention, the extension plate is located directly above the sliding strip. A first gear is provided between the extension plate and the sliding strip. The first gear is rotatably connected inside both ends of the fixed frame, and the first gear is meshed with both the first rack and the second rack.

[0015] As a preference of the present invention, the rotating assembly includes a second motor, the second motor is fixedly connected inside the sandwich layer, the output end of the second motor is fixedly connected to a rotating rod, a transmission belt is sleeved on the outer wall of the rotating rod, the other end of the transmission belt is sleeved on the outer wall of the rotating rod on the other side, a first turntable is fixedly connected to the lower end of the rotating rod on the side far from the second motor, and a first connecting rod is rotatably connected to the peripheral position of the bottom of the first turntable.

[0016] Preferably, as for the present invention, the rotating assembly further includes a first slide rail, the first slide rail is fixedly connected to the bottom of the inner wall of the protective shell, the top of the first slide rail is slidably connected with a first slide plate, the other end of the first connecting rod away from the first turntable is rotatably connected to the top of the first slide plate, the top of the first slide plate is fixedly connected with a first push bar and a second push bar, and the opposite ends of the first push bar and the second push bar are both inclined planes, where:

[0017] The first push bar and the second push bar are respectively distributed on both sides of the second limiting bar.

[0018] Preferably, as for the present invention, the detection assembly includes a third motor, the third motor is fixedly connected to the outer wall of one side of the protective shell, the output end of the third motor is fixedly connected with a second turntable, and the other end of the second turntable away from the third motor is rotatably connected with a second connecting rod.

[0019] Preferably, as for the present invention, the second slide rail is fixedly connected to the top inner wall of the protective shell through a cross column, the bottom of the second slide rail is slidably connected with a second slide plate, the other end of the second connecting rod away from the second turntable is rotatably connected to one end of the second slide plate, and the bottom of the second slide plate is fixedly connected with a third rack.

[0020] Preferably, as for the present invention, a second gear is rotatably connected to one side of the protective shell close to the third motor, the second gear is meshed with the third rack, the third rack is fixedly connected with a third turntable through a cross bar on the side away from the inner wall of the protective shell, and two obliquely parallel distributed third connecting rods are rotatably connected to the peripheral position of the third turntable.

[0021] Preferably, as for the present invention, a third slide rail is fixedly connected to one side of the protective shell close to the third motor through a cross column, a bent rod is slidably connected to the side of the third slide rail away from the inner wall of the protective shell, the other end of the third connecting rod away from the third turntable is rotatably connected to the bent rod, and the other end of the bent rod away from the third connecting rod is fixedly connected to the end of the extension plate away from the slider.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In this gear runout inspection device, driven by the first motor, the first turntable and the first rotating rod rotate, driving the first slide plate, the first push bar and the second push bar to slide left and right reciprocally, and using the first push bar and the second push bar to complete the rotation of a tooth groove angle of the rotating ring, which enables the detection gear conveyed here irregularly to ensure the accurate positioning of the outer tooth groove.

[0024] 2. In this gear runout inspection device, during the process of the rotating ring being driven to rotate by the tooth groove angle, the second sliding plate reciprocates left and right to drive the second gear to reciprocate left and right together, and drives the left and right reciprocating movement of the probe to perform radial runout detection on the tooth grooves of the inspected gear.

[0025] 3. In this gear runout inspection device, through the left and right reciprocating movement of the extension plate, the first rack drives the first gear and the second rack to realize the sliding of the sliding bar and the extension plate in the opposite direction. This enables the sliding bar to slide inward and insert into the gap of the buckle bar to prevent the inertial rotation of the second limiting bar from generating an excessive angle and causing missed detection. Brief Description of the Drawings

[0026] Figure 1 is an overall three-dimensional schematic diagram of the gear runout inspection device of the present invention;

[0027] Figure 2 is an overall sectional schematic diagram of the gear runout inspection device of the present invention;

[0028] Figure 3 is an internal sectional three-dimensional schematic diagram of the gear runout inspection device of the present invention;

[0029] Figure 4 is an internal three-dimensional schematic diagram of the gear runout inspection device of the present invention;

[0030] Figure 5 is an unfolded three-dimensional schematic diagram of the detection device and the rotating assembly of the gear runout inspection device of the present invention;

[0031] Figure 6 is an internal three-dimensional schematic diagram of the fixing frame of the gear runout inspection device of the present invention;

[0032] Figure 7 is a combined three-dimensional schematic diagram of the detection device and the detection assembly of the gear runout inspection device of the present invention;

[0033] Figure 8 is an unfolded three-dimensional schematic diagram of the combined detection assembly of the gear runout inspection device of the present invention;

[0034] The meanings of the various reference numerals in the figure are as follows:

[0035] 1. Protective shell; 11. Interlayer; 12. Raised plate; 121. First limiting bar; 13. Detection slot; 14. Electric telescopic rod; 2. Detection device; 21. First motor; 22. Fixing frame; 221. Sliding bar; 2211. First rack; 2212. First gear; 222. Slide block; 2221. Probe; 2222. Extension plate; 2223. Second rack; 23. Rotating ring; 231. Second limiting bar; 232. Buckle bar; 233. Column

[0036] 3. Rotating assembly; 31. Second motor; 32. Rotating rod; 321. Transmission belt; 33. First turntable; 331. First connecting rod; 34. First slide rail; 341. First sliding plate; 3411. First push bar; 3412. Second push bar;

[0037] 4. Detection assembly; 41. Third motor; 42. Second turntable; 421. Second connecting rod; 43. Second slide rail; 431. Second sliding plate; 4311. Third rack; 44. Turntable assembly; 441. Second gear; 442. Third turntable; 4421. Third connecting rod; 45. Third slide rail; 451. Bent rod; 5. Detection gear. Specific embodiments

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship 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 should not be construed as a limitation of the present invention.

[0040] Embodiment 1

[0041] Please refer to Figures 1-8 As shown, this embodiment provides a gear runout inspection device, including a protective housing 1 and a detection gear 5. A sandwich layer 11 is provided at the bottom of the protective housing 1, and a detection groove 13 is provided at the top of the protective housing 1. A plurality of electric telescopic rods 14 are fixedly connected to the inner wall of the bottom of the detection groove 13. A convex plate 12 is slidably connected to the top of the protective housing 1 and located outside the detection groove 13. A first limiting strip 121 is fixedly connected to the side of the convex plate 12 close to the detection groove 13. A detection device 2 is provided inside the protective housing 1, a rotating assembly 3 is provided on one side of the detection device 2, and a detection assembly 4 is provided on the side of the detection device 2 away from the rotating assembly 3. The detection device 2 includes a fixing frame 22. A rotating ring 23 is rotatably connected to the top of the fixing frame 22. A buckle strip 232 for fixing the detection gear 5 is fixedly connected to the top of the rotating ring 23. The detection assembly 4 includes a turntable assembly 44 for reciprocating detection.

[0042] As shown Figures 5-7 in the figure, the detection device 2 includes a first motor 21, the first motor 21 is fixedly connected inside the interlayer 11, the output end of the first motor 21 is fixedly connected to the bottom center of the rotating ring 23, a second limiting strip 231 is fixedly connected to the bottom edge of the rotating ring 23, a column 233 is fixedly connected to the top center position of the rotating ring 23, where: the distribution of the second limiting strip 231 is the same as that of the snap strip 232, and a solenoid valve is telescopically connected to the lower end position of the convex plate 12, the convex plate 12 is electromagnetically connected to the rotating ring 23, the fixing frame 22 is fixedly connected to the bottom of the inner wall of the protective shell 1, sliding strips 221 are slidably connected to the inner sides of both ends of the fixing frame 22, a first rack 2211 is fixedly connected to the top of the sliding strip 221, sliders 222 are also slidably connected to the inner sides of both ends of the fixing frame 22, a probe 2221 is fixedly connected to one side of the slider 222, an extension plate 2222 is fixedly connected to the side of the slider 222 away from the probe 2221, a second rack 2223 is fixedly connected to the bottom of the extension plate 2222, the extension plate 2222 is located directly above the sliding strip 221, and a first gear 2212 is arranged between the extension plate 2222 and the sliding strip 221, the first gear 2212 is rotatably connected to the inside of both ends of the fixing frame 22, and the first gear 2212 is meshed with both the first rack 2211 and the second rack 2223.

[0043] As shown Figures 4-5 in the figure, the rotating assembly 3 includes a second motor 31, the second motor 31 is fixedly connected inside the interlayer 11, a rotating rod 32 is fixedly connected to the output end of the second motor 31, a transmission belt 321 is sleeved on the outer wall of the rotating rod 32, the other end of the transmission belt 321 is sleeved on the outer wall of the rotating rod 32 on the other side, a first turntable 33 is fixedly connected to the lower end of the rotating rod 32 on the side away from the second motor 31, a first connecting rod 331 is rotatably connected to the bottom peripheral position of the first turntable 33, the rotating assembly 3 further includes a first slide rail 34, the first slide rail 34 is fixedly connected to the bottom of the inner wall of the protective shell 1, a first sliding plate 341 is slidably connected to the top of the first slide rail 34, the first connecting rod 331 is rotatably connected to the top of the first sliding plate 341 at the end away from the first turntable 33, a first pushing strip 3411 and a second pushing strip 3412 are fixedly connected to the top of the first sliding plate 341, and the opposite ends of the first pushing strip 3411 and the second pushing strip 3412 are both inclined planes, where: the first pushing strip 3411 and the second pushing strip 3412 are respectively distributed on both sides of the second limiting strip 231.

[0044] As shown Figures 7-8As shown in the figure, the detection component 4 includes a third motor 41. The third motor 41 is fixedly connected to the outer wall of one side of the protective shell 1. The output end of the third motor 41 is fixedly connected with a second turntable 42. A second connecting rod 421 is rotatably connected to one end of the second turntable 42 away from the third motor 41. The second slide rail 43 is fixedly connected to the inner wall of the top of the protective shell 1 through a cross column. The bottom of the second slide rail 43 is slidably connected with a second slide plate 431. One end of the second connecting rod 421 away from the second turntable 42 is rotatably connected to one end of the second slide plate 431. A third rack 4311 is fixedly connected to the bottom of the second slide plate 431. A second gear 441 is rotatably connected to one side of the protective shell 1 close to the third motor 41. The second gear 441 is meshed with the third rack 4311. A third turntable 442 is fixedly connected to one side of the third rack 4311 away from the inner wall of the protective shell 1 through a cross bar. Two obliquely parallel third connecting rods 4421 are rotatably connected to the peripheral position of the third turntable 442. A third slide rail 45 is fixedly connected to one side of the protective shell 1 close to the third motor 41 through a cross column. A bent rod 451 is slidably connected to one side of the third slide rail 45 away from the inner wall of the protective shell 1. One end of the third connecting rod 4421 away from the third turntable 442 is rotatably connected to the bent rod 451. One end of the bent rod 451 away from the third connecting rod 4421 is fixedly connected to one end of the extension plate 2222 away from the slider 222.

[0045] It can be seen from this that when it is necessary to detect the runout of the gear, as Figure 2 shown, the staff conveys the gear 5 to be detected from the left to the direction of the detection groove 13 through an external conveying device. As Figure 1 shown, when the detection gear 5 is conveyed to the position of the detection groove 13, first, it is necessary to align the tooth grooves of the detection gear 5. At this time, the detection gear 5 being conveyed is supported by the electric telescopic rod 14 and blocked by the first limiting strip 121 on the convex plate 12. At this time, if the distance between the tooth groove of the detection gear 5 and the first limiting strip 121 fits and coincides, then the electric telescopic rod 14 will contract to place the entire detection gear 5 on the top of the buckle strip 232 and be fixed by the buckle strip 232. Otherwise, if it does not fit with the first limiting strip 121, it is necessary to adjust its angle;

[0046] As Figure 4As shown in the figure, under the drive of the second motor 31, the rotating rod 32 rotates, and under the transmission of the transmission belt 321, the first turntable 33 and the first connecting rod 331 are driven to rotate. At this time, the first connecting rod 331 will reciprocally push and pull the first sliding plate 341 under the drive of the first turntable 33, causing the first sliding plate 341 to move left and right reciprocally. At the same time, the first push bar 3411 and the second push bar 3412 will also move left and right reciprocally. In this case, the inclined surfaces of the first push bar 3411 and the second push bar 3412 will continuously push the second limiting bar 231 to rotate to the angle of the next second limiting bar 231, and at the same time drive the rotating ring 23 and the convex plate 12 to rotate by the angle of a second limiting bar 231. During this period, the detected gear 5 under the thrust will coincide with the rotating first limiting bar 121, and the detected gear 5 will be accurately placed by the contraction of the electric telescopic rod 14. Moreover, the distances between the detected gear 5, the buckle bar 232, and the second limiting bar 231 are the same. Therefore, when the second limiting bar 231 is affected by rotation, the detected gear 5 also rotates by the angle of one tooth groove;

[0047] It should be noted that during the process of the detected gear 5 being driven by the electric telescopic rod 14 to move downward and fit with the buckle bar 232, the outer wall of the detected gear 5 will touch the solenoid valve on the convex plate 12, causing the convex plate 12 and the rotating ring 23 to lose magnetism, and causing the convex plate 12 to be magnetically attracted to the inner wall of the detection groove 13 on the protective shell 1, and the magnetic rotating ring 23 will be restored again when touched next time. This makes it possible for the detection gear 5 not to be blocked and affected by the convex plate 12 when the detection device 2 drives the detected gear 5 to rotate;

[0048] As Figures 7-8 described above, when the rotating assembly 3 drives the detected gear 5 to rotate by each tooth groove, similarly, the detection assembly 4 will perform radial runout detection on the inner side of the tooth groove of the detected gear 5. Under the drive of the third motor 41, the second turntable 42 rotates and will drive the second connecting rod 421 to rotate along the peripheral position of the second turntable 42. At this time, the second turntable 42 will reciprocally push and pull the second sliding plate 431, causing the second sliding plate 431 and the third rack 4311 to move left and right. And as the third rack 4311 moves left and right, it will drive the second gear 441 to rotate reciprocally in two directions. As Figure 8 shown in the figure, when the second gear 441 rotates counterclockwise, the third turntable 442 will push the two side bent rods 451 to expand outward on the third slide rail 45, and vice versa, it will drive the bent rods 451 to contract inward. As Figures 5-6As shown, during the process of the bending rod 451 contracting inward, it will also drive the two side extension plates 2222 to contract inward, and drive the slider 222 and the probe 2221 to penetrate into the tooth groove of the detection gear 5 at the top of the rotating ring 23 together until they touch the tooth groove, so as to perform a radial runout detection on the detection gear 5. This enables the two side probes 2221 to not only accelerate the detection of the detection gear 5, but also make the detection of the detection gear 5 more convenient and fast by the mutual cooperation between the detection device 2, the rotating assembly 3 and the detection assembly 4;

[0049] During the time interval when the first push bar 3411 and the second push bar 3412 drive the rotating ring 23 to rotate by an angle of one tooth groove, the detection assembly 4 completes the radial runout detection of the detection gear 5 by using the probe 2221. Here, one rotation of the first turntable 33 is taken as a measurement number, represented by A (that is, the first sliding plate 341 slides left and right in a reciprocating motion). Here, it is set that the starting position of the first connecting rod 331 is at the upper end position or the lower end position of the first turntable 33. Then the first sliding plate 341 will first slide to the right by one-fourth of A (the first slide), then slide to the left by one-half of A (the second slide), and finally slide to the right to complete the last one-fourth of A (the third slide). At this time, after the first sliding plate 341 completes the first one-fourth of A (the first slide), the second sliding plate 431 begins to be driven by the second turntable 42 to slide left and right. And because after the first sliding plate 341 completes a complete A, it advances the rotating ring 23 to rotate by two tooth groove angles (that is, the first push bar 3411 and the second push bar 3412 each push once), so after the first turntable 33 rotates one circle, the second turntable 42 will rotate two circles to complete the radial runout detection of each tooth groove of the detection gear 5;

[0050] It should be noted that when the first sliding plate 341 drives the first push bar 3411 and the second push bar 3412 to move left and right reciprocally, when the first push bar 3411 and the second push bar 3412 reach the upper end position or the lower end position of the outer wall of the first turntable 33 during the rotation of the first connecting rod 331, neither the first push bar 3411 nor the second push bar 3412 contacts the second limiting bar 231. During this period, after the bending rod 451 slides inward to drive the probe 2221 to complete the detection, it will expand outward again, as Figure 6 shown. At this time, the second rack 2223 at the bottom of the extension plate 2222 will drive the first gear 2212 to rotate. Because the first gear 2212 is in a fixed position, it will also drive the sliding bar 221 to slide inward and insert into the gap of the buckle bar 232 to prevent the situation of missed detection caused by the inertial rotation of the second limiting bar 231 by an excessive angle during rotation.

[0051] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A gear runout inspection device, comprising a protective shell (1) and a detection gear (5), characterized in that: The bottom of the protective shell (1) is provided with an interlayer (11), the top of the protective shell (1) is provided with a detection slot (13), a plurality of electric telescopic rods (14) are fixedly connected to the inner wall of the bottom of the detection slot (13), a raised plate (12) is slidably connected to the top of the protective shell (1) and located outside the detection slot (13), a side of the raised plate (12) close to the detection slot (13) is fixedly connected to a No. 1 limiting strip (121), a detection device (2) is arranged on the inner side of the protective shell (1), a rotating assembly (3) is arranged on one side of the detection device (2), and a detection assembly (4) is arranged on the side of the detection device (2) away from the rotating assembly (3); The detection device (2) comprises a fixed frame (22), the top of the fixed frame (22) is rotatably connected to a rotating ring (23), and the top of the rotating ring (23) is fixedly connected to a buckle strip (232) for fixing the detection gear (5); The detection component (4) comprises a turntable component (44) for reciprocating detection.

2. A gear runout inspection device according to claim 1, characterized in that: The detection device (2) comprises a first motor (21), the first motor (21) is fixedly connected in the interlayer (11), the output end of the first motor (21) is fixedly connected to the bottom of a rotating ring (23), the bottom of the rotating ring (23) is fixedly connected to a second limiting strip (231), and the top center position of the rotating ring (23) is fixedly connected to a column (233), wherein: The distribution of the second limiting strip (231) is the same as that of the buckle strip (232), and the lower end of the raised plate (12) is telescopically connected to a solenoid valve, and the raised plate (12) is electromagnetically connected to the rotating ring (23).

3. A gear runout inspection device according to claim 2, characterized in that: The fixing frame (22) is fixedly connected to the bottom of the inner wall of the protective shell (1); sliding bars (221) are slidably connected to the inner sides of both ends of the fixing frame (22); a first rack (2211) is fixedly connected to the top of the sliding bar (221); sliders (222) are also slidably connected to the inner sides of both ends of the fixing frame (22); a measuring needle (2221) is fixedly connected to one side of the slider (222); an extension plate (2222) is fixedly connected to the side of the slider (222) away from the measuring needle (2221); and a second rack (2223) is fixedly connected to the bottom of the extension plate (2222).

4. The gear runout inspection device according to claim 3, characterized in that: The extension plate (2222) is located directly above the sliding bar (221), and a first gear (2212) is provided between the extension plate (2222) and the sliding bar (221). The first gear (2212) is rotatably connected to the inside of two ends of the fixing frame (22), and the first gear (2212) is meshedly connected with both the first rack (2211) and the second rack (2223).

5. The gear runout inspection device according to claim 4, characterized in that: The rotating assembly (3) comprises a No. 2 motor (31), the No. 2 motor (31) is fixedly connected in the interlayer (11), the output end of the No. 2 motor (31) is fixedly connected to a rotating rod (32), the outer wall of the rotating rod (32) is sleeved with a transmission belt (321), the other end of the transmission belt (321) is arranged on the outer wall of the rotating rod (32) on the other side, the lower end of the rotating rod (32) away from the No. 2 motor (31) is fixedly connected to a No. 1 rotating disk (33), and the bottom peripheral position of the No. 1 rotating disk (33) is rotatably connected to a No. 1 connecting rod (331).

6. The gear runout inspection device according to claim 5, characterized in that: The rotating assembly (3) further comprises a No. 1 slide rail (34), the No. 1 slide rail (34) being fixedly connected to the bottom of the inner wall of the protective shell (1), the top of the No. 1 slide rail (34) being slidably connected to a No. 1 slide plate (341), the No. 1 connecting rod (331) being rotatably connected to the top of the No. 1 slide plate (341) at an end away from the No. 1 turntable (33), the top of the No. 1 slide plate (341) being fixedly connected to a No. 1 push bar (3411) and a No. 2 push bar (3412), the opposite ends of the No. 1 push bar (3411) and the No. 2 push bar (3412) both being inclined surfaces, wherein: The first push bar (3411) and the second push bar (3412) are respectively distributed on both sides of the second restriction bar (231).

7. The gear runout inspection device according to claim 6, characterized in that: The detection assembly (4) comprises a No. 3 motor (41), the No. 3 motor (41) being fixedly connected to an outer wall of one side of the protective shell (1), the output end of the No. 3 motor (41) being fixedly connected to a No. 2 turntable (42), and the No. 2 turntable (42) being rotatably connected to a No. 2 connecting rod (421) at an end away from the No. 3 motor (41).

8. The gear runout inspection device according to claim 7, characterized in that: The protective shell (1) is fixedly connected to a No. 2 slide rail (43) on the top inner wall via a transverse column, and a No. 2 slide plate (431) is slidably connected to the bottom of the No. 2 slide rail (43), and the No. 2 connecting rod (421) is rotatably connected to one end of the No. 2 slide plate (431) at an end away from the No. 2 turntable (42), and a No. 3 rack (4311) is fixedly connected to the bottom of the No. 2 slide plate (431).

9. The gear runout inspection device according to claim 8, characterized in that: The protective shell (1) is rotatably connected to a No. 2 gear (441) on a side close to the No. 3 motor (41); the No. 2 gear (441) is meshedly connected to a No. 3 rack (4311); the No. 3 rack (4311) is fixedly connected to a No. 3 turntable (442) via a cross bar on a side away from the inner wall of the protective shell (1); and the No. 3 turntable (442) is rotatably connected to two No. 3 connecting rods (4421) that are obliquely parallel and distributed at the peripheral position.

10. The gear runout inspection device according to claim 9, characterized in that: The protective shell (1) is fixedly connected to a No. 3 slide rail (45) via a transverse column on a side close to the No. 3 motor (41); the No. 3 slide rail (45) is slidably connected to a bending rod (451) on a side away from the inner wall of the protective shell (1); the No. 3 connecting rod (4421) is rotatably connected to the bending rod (451) at an end away from the No. 3 turntable (442); and the bending rod (451) is fixedly connected to an end of the extension plate (2222) away from the slider (222) at an end away from the No. 3 connecting rod (4421).

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