A gear runout detection device

Abstract

This utility model discloses a gear runout detection device, including a base plate, a side plate fixedly connected to one end of the base plate, a top plate fixedly connected to the top of the side plate, a fixing assembly laterally disposed between the top plate and the base plate and capable of coaxially fixing gears to be tested with different bore diameters, and a rotary drive mechanism for driving the fixing assembly to rotate so that the gear to be tested rotates around its axis. A dial indicator for detecting the gear to be tested on the fixing assembly is disposed on the top plate. This utility model allows for flexible adaptation to gears to be tested with different bore diameters through the fixing assembly, and drives the gear to be tested to rotate through the rotary drive mechanism, enabling the dial indicator to detect the gear. It eliminates the need for frequent replacement of the fixing components, significantly reducing preparation time and equipment costs before testing, and ensuring the continuity of the testing process.

Description

Technical Field

[0001] This utility model relates to the field of gear manufacturing technology, and specifically to a gear runout detection device. Background Technology

[0002] In the field of mechanical manufacturing, gears, as key components for transmitting motion and power, directly affect the operational stability, transmission efficiency, and service life of the entire mechanical system due to their machining accuracy. Gear runout is one of the important indicators for measuring gear accuracy; it reflects the amount of change in the actual position of the gear ring radially or end face relative to the reference axis during gear rotation. Therefore, accurate testing of gear runout is a crucial step in ensuring product quality during gear production, assembly, and maintenance. Existing gear runout detection devices typically lack adjustability in the structure used to fix the gear under test, failing to flexibly adapt to the bore diameter of the gear being tested. These devices often employ a fixing structure matched to gears of a specific bore diameter. When testing gears with different bore diameters, the corresponding fixing component must be replaced, increasing preparation time and equipment costs, and severely impacting the continuity of testing. Utility Model Content

[0003] The purpose of this invention is to solve the problem that the existing technology usually uses bolts to fix the gears to be tested, which is inconvenient to disassemble and assemble. Therefore, a gear runout detection device is proposed.

[0004] To solve the above-mentioned technical problems, this utility model provides a gear runout detection device, including a base plate, a side plate fixedly connected to one end of the base plate, a top plate fixedly connected to the top of the side plate, a fixing assembly horizontally disposed between the top plate and the base plate and capable of coaxially fixing gears to be tested with different bore diameters, and a rotary drive mechanism for driving the fixing assembly to rotate so that the gear to be tested rotates around the axis. A dial indicator for detecting the gear to be tested on the fixing assembly is provided on the top plate.

[0005] Furthermore, the fixing assembly includes a support unit axially connected to the output end of the rotary drive mechanism and a clamping unit disposed opposite to the support unit; the support unit includes a mounting base, a support claw disposed on the side of the mounting base facing the clamping unit for the gear to be tested to be fitted thereon, and an adjustment mechanism for adjusting the opening and closing of the support claw; the clamping unit is used to hold the gear to be tested against the side of the mounting base facing the clamping unit.

[0006] Furthermore, the mounting base has a mounting cavity; the adjustment mechanism includes a bidirectional lead screw vertically disposed in the mounting cavity and capable of rotating around its own axis, an adjustment knob disposed on the top surface of the mounting base and axially connected to the bidirectional lead screw, two lead screw nuts disposed on the bidirectional lead screw, and a guide hole disposed on the side of the mounting base facing the clamping unit and parallel to the bidirectional lead screw; the support claw includes two support rods, the inner ends of the two support rods are respectively connected to the two lead screw nuts, and the outer ends extend out of the guide hole, and the gear to be tested is sleeved on the outer ends of the two support rods.

[0007] Furthermore, the rotary drive mechanism includes a rotary unit and a rotary shaft disposed on the side plate, one end of the rotary shaft being connected to the output shaft of the rotary unit, and the other end being connected to the mounting base.

[0008] Furthermore, the outer surfaces of both support rods are covered with a wear-resistant rubber layer.

[0009] Furthermore, a vertical plate for assembling the clamping unit is provided at one end of the base plate away from the side plate. The clamping unit includes a push rod, a pressure plate, an operating handle, and a return spring. The push rod is slidably inserted into the vertical plate. The pressure plate is rotatably connected to one end of the push rod near the mounting base. The operating handle is fixedly connected to the other end of the push rod and located on one side of the vertical plate. The return spring is sleeved on the outside of the push rod, and both ends of the return spring are fixedly connected to the vertical plate and the operating handle, respectively.

[0010] Furthermore, the clamping plate has two through holes corresponding to the positions of the two support rods. The ends of the two support rods away from the mounting base are respectively inserted into the two through holes. When the mounting base rotates under the drive of the rotary drive mechanism, the two support rods can drive the clamping plate to rotate synchronously through the two through holes.

[0011] Furthermore, the top plate has a first through hole along the longitudinal direction for the dial indicator to pass through, and a second through hole along the transverse direction communicating with the first through hole. A locking bolt is provided in the second through hole, and the dial indicator is fixed in the first through hole by the locking bolt.

[0012] Furthermore, the lower surface of the base plate is provided with an anti-slip pad.

[0013] Furthermore, the mounting base is provided with two reinforcing rods extending toward the side plate on the side near the side plate, and the two reinforcing rods support each other with respect to the center point of the mounting base; the side plate facing the mounting base is provided with a track groove adapted to the two reinforcing rods, and the ends of the two reinforcing rods away from the mounting base are slidably connected in the track groove.

[0014] This invention provides a gear runout detection device. By setting up a support unit with adjustable support claws, and using a bidirectional lead screw to adjust the opening and closing of the support claws, it can flexibly adapt to gears with different bore diameters. This eliminates the need to replace fixed components, reducing preparation time and equipment costs, and ensuring continuous testing. Simultaneously, the clamping unit uses push rods and return springs instead of bolts for fastening, facilitating quick assembly and disassembly of the gears under test and solving the problem of inconvenient assembly and disassembly with traditional bolt fastening. Overall, this improves the efficiency and convenience of gear runout detection. Furthermore, the structure of the reinforcing rod and track groove further enhances the stability of the device's operation, ensuring testing accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is a cross-sectional view of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram showing the connection between the gear to be tested, the support unit, and the rotary drive mechanism in one embodiment of this utility model.

[0018] Figure 4 This is a schematic diagram showing the connection between the gear to be tested and the clamping unit in one embodiment of the present invention.

[0019] The labels in the attached drawings are as follows: Base plate 1; Vertical plate 11; Side plate 2; Track groove 21; Top plate 3; First through hole 31; Second through hole 32; Gear to be tested 4; Fixing assembly 5; Support unit 51; Mounting base 511; Mounting cavity 5111; Guide hole 5112; Support claw 512; Support rod 5121; Adjustment mechanism 513; Two-way lead screw 5131; Adjustment knob 5132; Lead screw nut 5133; Clamping unit 52; Push rod 521; Pressure plate 522; Through hole 5221; Operating handle 523; Return spring 524; Rotary drive mechanism 6; Rotary unit 61; Rotary shaft 62; Dial indicator 7; Locking bolt 8; Reinforcing rod 9. Detailed Implementation

[0020] The following detailed description illustrates the specific implementation method:

[0021] Reference Figure 1 , Figure 2 , Figure 3 as well as Figure 4This utility model discloses a gear runout detection device, comprising a base plate 1, a side plate 2 fixedly connected to one end of the base plate 1, a top plate 3 fixedly connected to the top of the side plate 2, a fixing assembly 5 horizontally disposed between the top plate 3 and the base plate 1 and capable of coaxially fixing gears 4 to be tested with different bore diameters, and a rotary drive mechanism 6 for driving the fixing assembly 5 to rotate so that the gears 4 to be tested rotate around an axis. A dial indicator 7 for detecting the gears 4 to be tested on the fixing assembly 5 is provided on the top plate 3. This utility model allows for flexible adaptation of gears 4 to be tested with different bore diameters through the fixing assembly 5, and drives the gears 4 to be tested to rotate through the rotary drive mechanism 6, enabling the dial indicator 7 to detect the gears. This eliminates the need for frequent replacement of fixing components, significantly reducing preparation time and equipment costs before testing, and ensuring the continuity of the testing process.

[0022] In use, the base plate 1 is first placed on a horizontal workbench. To ensure better stability of the entire device, an anti-slip pad (not shown in the figure) is provided on the lower surface of the base plate 1. The anti-slip pad increases the friction between the base plate 1 and the workbench surface. During the testing of the gear 4 under test, even if the gear 4 under test rotates and generates vibration or slight impact, the anti-slip pad has a certain elasticity and buffering effect, which can absorb some of the vibration energy, reduce the impact of vibration on the overall device, and avoid unnecessary shaking of components such as the dial indicator 7 due to vibration, thereby improving the accuracy of the measurement data. It can also effectively prevent the entire device from sliding or displacing, ensuring the stability of the device during the test and providing a basis for accurate measurement. After the entire device is placed stably on the workbench, the gear 4 under test is fixed by the fixing component 5 before testing. In this embodiment, the fixing component 5 includes a support unit 51 that is shaft-connected to the output end of the rotary drive mechanism 6 and a clamping unit 52 that is disposed opposite to the support unit 51. Specifically, the support unit 51 includes a mounting base 511, a support claw 512 disposed on the side of the mounting base 511 facing the clamping unit 52 for mounting the gear 4 to be tested, and an adjustment mechanism 513 for adjusting the opening and closing of the support claw 512. First, the support unit 51 is operated to align with the inner hole of the gear 4 to be tested. The adjustment mechanism 513 then adapts the size to prevent the gear 4 from wobbling. In this process, the support unit 51 not only provides a reference support for the gear, but its adjustable characteristics also allow it to accommodate various specifications of the gears 4 to be tested, from smaller to larger hole diameters, without requiring the replacement of dedicated support components for different gears 4 to be tested.

[0023] The mounting base 511 serves as the mounting carrier for the adjustment mechanism 513, with the adjustment mechanism 513 located at its end away from the side plate 2. After the adjustment mechanism 513 passes through the inner hole of the gear to be tested, it adapts to gears of different bore diameters through self-adjustment. In this embodiment, the mounting base 511 has a mounting cavity 5111 for mounting the adjustment mechanism 513. In this embodiment, to provide fixed support for different gears 4 to be tested, the adjustment mechanism 513 includes a bidirectional lead screw 5131 vertically disposed within the mounting cavity 5111 and rotatable around its own axis; an adjustment knob 5132 disposed on the top surface of the mounting base 511 and axially connected to the bidirectional lead screw 5131; two lead screw nuts 5133 disposed on the bidirectional lead screw 5131; and a guide hole 5112 disposed on the side of the mounting base 511 facing the clamping unit 52 and parallel to the bidirectional lead screw 5131. The support claw 512 includes two support rods 5121. The inner ends of the two support rods 5121 are respectively connected to the two lead screw nuts 5133, and the outer ends extend out of the guide hole 5112. The gear 4 to be tested is sleeved on the outer ends of the two support rods 5121. When it is necessary to adapt to different hole diameters of the gear 4 to be tested, the adjustment knob 5132 is rotated. The adjustment knob 5132 is fixedly connected to the top end of the bidirectional lead screw 5131, thereby driving the bidirectional lead screw 5131 to rotate synchronously. Since the two lead screw nuts 5133 are symmetrically threaded to the outer surface of the bidirectional lead screw 5131 at the midpoint, and are limited by the inner wall of the mounting cavity 5111, when the bidirectional lead screw 5131 rotates, the two lead screw nuts 5133 will move synchronously in opposite directions along the lead screw axis. The two support rods 5121 fixed to the lead screw nut 5133 pass through the guide hole 5112 on the side of the mounting base 511 facing the gear 4 to be tested. The guide hole 5112 constrains the movement direction of the two support rods 5121, allowing them to move only radially. When the lead screw nut 5133 moves, it drives the two support rods 5121 to move along the guide hole 5112, increasing or decreasing the distance between the two support rods 5121, thereby adapting to the inner hole of the gear 4 with different diameters, until they are tightly fitted to the inner hole wall, completing radial support. To reduce wear on the two support rods 5121, a wear-resistant rubber layer (not shown in the figure) is wrapped around the outer surface of both support rods 5121. When the two support rods 5121 contact the inner hole of the gear to be tested, the wear-resistant rubber layer directly contacts the inner hole wall. The rubber material has a certain degree of elasticity, which can buffer the rigid collision between the two support rods 5121 and the inner hole wall, and prevent the inner hole of the gear 4 to be tested from being scratched or indented due to excessive adjustment force, thus effectively protecting the inner surface of the gear 4 to be tested.Meanwhile, the friction of the wear-resistant rubber layer surface is greater than that of the metal surface, which increases the static friction between the two support rods 5121 and the inner wall of the gear, preventing relative slippage during gear rotation and ensuring that the gear rotates synchronously and stably with the support unit 51, thereby improving the accuracy of the detection data. In addition, the wear resistance of the rubber layer can extend the service life of the two support rods 5121 and reduce component wear caused by long-term use.

[0024] After the gear and support unit 51 are fixed, the clamping unit 52 is used to hold the gear 4 to be tested against the side of the mounting base 511 facing the clamping unit 52. In this embodiment, a vertical plate 11 for assembling the clamping unit 52 is provided at one end of the base plate 1 away from the side plate 2. The clamping unit 52 includes a push rod 521, a pressure plate 522, an operating handle 523, and a return spring 524. The push rod 521 slides through the vertical plate 11, the pressure plate 522 is rotatably connected to one end of the push rod 521 near the mounting base 511, the operating handle 523 is fixedly connected to the other end of the push rod 521 and located on one side of the vertical plate 11, and the return spring 524 is sleeved on the outside of the push rod 521, with both ends of the return spring 524 fixedly connected to the vertical plate 11 and the operating handle 523, respectively. During assembly, the upright plate 11 is first vertically fixed to the base plate 1, ensuring accurate relative positioning with the support unit 51 to provide a stable reference for subsequent clamping actions. The push rod 521 slides through the upright plate 11, and the two must cooperate smoothly with appropriate clearance to avoid jamming or shaking. The clamping plate 522 is rotatably connected to the end of the push rod 521 near the support unit 51 via a bearing or hinge structure, allowing it to rotate synchronously with the gear without generating additional torque. The operating handle 523 is fixed to the other end of the push rod 521, facilitating the application of external force by the operator. The return spring 524 is sleeved on the outside of the push rod 521, with one end fixedly connected to the upright plate 11 and the other end fixed to the operating handle 523. In its natural state, the return spring 524 is in a slightly compressed state, maintaining a preload on the clamping plate 522 in the gear direction. In use, the operator pulls the operating handle 523 outward, causing the push rod 521 to move the clamping plate 522 away from the gear. At this time, the return spring 524 is further stretched and stores elastic potential energy. After the gear is in place, the operating handle 523 is released, and the return spring 524 releases its potential energy, pushing the clamping plate 522 to press against the gear end face through the push rod 521, thus achieving axial fixation. This structure can automatically adjust the clamping stroke according to the gear thickness to adapt to gears of different specifications. Two through holes 5221 are provided on the clamping plate 522 corresponding to the positions of the two support rods 5121. The ends of the two support rods 5121 away from the mounting base 511 are respectively inserted into the two through holes 5221. When the mounting base 511 rotates under the drive of the rotating shaft 62, the two support rods 5121 can drive the clamping plate 522 to rotate synchronously through the through holes 5221. During assembly, the ends of the two support rods 5121 that are away from the mounting base 511 are respectively inserted into the two through holes 5221.When the mounting base 511 rotates under the drive of the rotating shaft 62, the reinforcing rod 9 rotates synchronously with it, driving the clamping plate 522 to rotate synchronously through the inner wall of the through hole 5221. This structure avoids the slippage problem caused by insufficient friction in traditional clamping methods, ensuring that the clamping plate 522, gear, and mounting base 511 rotate in strict synchronization, eliminating vibration and measurement errors caused by relative motion, and ensuring that the clamping force is always uniformly applied to the gear end face. Through the radial support of the support unit 51 and the axial clamping of the clamping unit 52, the gear 4 to be tested is fixed in all directions. This dual-mechanism design solves the problem of poor adaptability of traditional fixing structures. When dealing with gears of different bore diameters, fixing can be completed simply by adjusting the radial dimension of the support unit 51 and the clamping stroke of the clamping unit 52. The entire process does not require disassembling any parts, significantly improving testing efficiency, while ensuring the stability of the gear during the test, providing a reliable benchmark condition for subsequent runout testing.

[0025] After the gear is fixed, in order to drive the gear 4 to be tested to rotate, the rotation drive mechanism 6 in this embodiment includes a rotation unit 61 and a rotation shaft 62 disposed on the side plate 2. One end of the rotation shaft 62 is connected to the output shaft of the rotation unit 61, and the other end is axially connected to the mounting base 511. In this embodiment, the rotation unit 61 serves as a power source to provide rotational driving force, and can be a power component such as a motor (in this embodiment, a drive motor). When the rotation unit 61 is started, its output shaft begins to rotate, transmitting rotational power to the rotation shaft 62 through the shaft connection structure. One end of the rotation shaft 62 is fixedly connected to the output shaft of the rotation unit 61, and the other end is axially connected to the mounting base 511 in the support unit 51, forming a power transmission path. Driven by the rotation unit 61, the rotation shaft 62 rotates around its own axis, thereby driving the mounting base 511 axially connected to it to rotate synchronously. Since the gear 4 to be tested is coaxially fixed by the support unit 51 and the clamping unit 52 of the fixing assembly 5, the rotation of the mounting base 511 will directly drive the gear 4 to be tested fixed on it to rotate around its own axis. During this process, the probe of the dial indicator 7 on the top plate 3 contacts the tooth surface or end face of the gear 4 to be tested. As the gear continues to rotate, the dial indicator 7 can detect and record the radial runout or end face runout of the gear caused by manufacturing errors in real time, thereby completing the detection of the gear runout accuracy. In order to make the gear more stable during rotation, in this embodiment, two reinforcing rods 9 extending toward the side plate 2 are provided on the side of the mounting base 511 near the side plate 2. The two reinforcing rods 9 support each other with the center point of the mounting base 511. At the same time, a track groove 21 adapted to the two reinforcing rods 9 is opened on the side of the side plate 2 facing the mounting base 511. The ends of the two reinforcing rods 9 away from the mounting base 511 are slidably connected in the track groove 21. During testing, the ends of the two reinforcing rods 9 furthest from the mounting base 511 are respectively inserted into the corresponding track grooves 21, forming a sliding fit between the reinforcing rods 9 and the track grooves 21. When the driving component 612 drives the rotating shaft 62 and the mounting base 511 to rotate, the reinforcing rods 9 rotate synchronously with the mounting base 511 and slide along the arc-shaped path of the track grooves 21. During this process, the cooperation between the two symmetrically distributed reinforcing rods 9 and the track grooves 21 effectively limits the radial displacement and wobble of the mounting base 511 during rotation, enhancing the torsional resistance and structural rigidity of the mounting base 511. Even when the gear rotation generates centrifugal force or vibration, it can ensure that the mounting base 511 rotates stably around the axis of the rotating shaft 62, providing a stable rotational reference for the gear under test, thereby improving the accuracy of the dial indicator 7 in detecting gear runout.

[0026] Since different gears have different outer diameters, a first through hole 31 is provided longitudinally in the top plate 3 for the dial indicator 7 to pass through, in order to adjust the position of the dial indicator 7. A second through hole 32 communicating with the first through hole 31 is provided transversely in the top plate 3. A locking bolt 8 is provided in the second through hole, and the dial indicator 7 is fixed in the first through hole 31 by the locking bolt 8. The first through hole 31, which is provided longitudinally in the top plate 3, provides an installation channel for the dial indicator 7. The hole diameter is adapted to the diameter of the dial indicator probe to ensure smooth longitudinal adjustment. The second through hole 32, which is provided transversely, communicates perpendicularly with the first through hole 31 and is threaded inside to install the locking bolt 8. When installing the dial indicator, the probe of the dial indicator 7 is inserted into the first through hole 31, and its depth is adjusted longitudinally according to the gear tooth tip height or end face position so that the probe contacts the surface being measured and is pre-pressed by 0.1-0.3 mm. Subsequently, the locking bolt 8 is tightened through the second through hole 32, with its end pressing against the dial indicator probe for fixation. After fixation, it is necessary to check whether the dial indicator is stable and not loose. This design allows the dial indicator 7 to be adjusted in both longitudinal and transverse (horizontal fine adjustment) dimensions, enabling precise alignment with the gear ring or end face measurement point, adapting to the testing needs of gears with different modules and widths. The locking method is simple and reliable, and the adjustment process does not require disassembly of parts, significantly shortening the measurement preparation time.

[0027] This utility model discloses a gear runout detection device with the following advantages: The anti-slip pad on the lower surface of the base plate not only increases the friction with the worktable, but its own elasticity also absorbs some of the vibration energy generated by the gear rotation, reducing the impact of vibration on components such as the dial indicator, preventing the device from sliding and displacing, and providing a stable reference for measurement. The support unit, through the cooperation of a bidirectional lead screw and an adjusting knob, can precisely adjust the distance between the two support rods, adapting to various gear inner holes from small to large diameters. During adjustment, the lead screw and nut move synchronously in opposite directions along the axial direction, and with the constraint of the guide hole, ensures the stability of the radial movement of the support rods, eliminating the need to replace special support parts for different gear specifications. The wear-resistant rubber layer on the outer surface of the support rod directly contacts the gear inner hole, which not only prevents scratches or indentations on the inner hole through elastic buffering, but also prevents relative sliding during gear rotation due to the large friction, while extending the service life of the support rods. The clamping unit utilizes the elastic potential energy of the return spring to push the clamping plate to adaptively adjust its stroke along the axial direction, accommodating gears of varying thicknesses. The rotating connection design between the clamping plate and the push rod prevents additional torque during gear rotation, achieving omnidirectional stable fixation and significantly reducing component replacement and debugging time before testing, thus lowering equipment costs. Two reinforcing rods on both sides of the mounting base are symmetrically distributed around their center point, with their ends sliding within the track grooves of the side plates. This effectively limits radial runout during mounting base rotation, enhancing structural rigidity and ensuring stable gear rotation around the axis. The first through-hole on the top plate allows the dial indicator to be adjusted longitudinally, precisely aligning the measurement point according to the gear tooth tip height or end face position. Combined with the locking bolt in the second through-hole, the dial indicator position can be quickly fixed. Furthermore, the lateral fine-tuning function adapts to the testing needs of gears with different outer diameters and modules. The adjustment process requires no disassembly of any components, shortening measurement preparation time. These design details work together to not only ensure the continuity of the testing process, but also ensure that the dial indicator can stably and accurately record the radial runout or end face runout of the gear, significantly improving the efficiency and data reliability of gear runout testing.

[0028] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A gear runout detection device, comprising a base plate, a side plate fixedly connected to one end of the base plate, and a top plate fixedly connected to the top of the side plate, characterized in that: It also includes a fixing component that is horizontally disposed between the top plate and the bottom plate and can coaxially fix the gears to be tested with different bore diameters, and a rotary drive mechanism for driving the fixing component to rotate so that the gears to be tested rotate around the axis. The top plate is provided with a dial indicator for detecting the gears to be tested on the fixing component.

2. The gear run-out detection apparatus according to claim 1, characterized by: The fixing assembly includes a support unit axially connected to the output end of the rotary drive mechanism and a clamping unit disposed opposite to the support unit; the support unit includes a mounting base, a support claw disposed on the side of the mounting base facing the clamping unit for the gear to be tested to be fitted thereon, and an adjustment mechanism for adjusting the opening and closing of the support claw; the clamping unit is used to hold the gear to be tested against the side of the mounting base facing the clamping unit.

3. The gear run-out detection apparatus of claim 2, wherein: The mounting base has a mounting cavity; the adjustment mechanism includes a bidirectional lead screw vertically disposed in the mounting cavity and capable of rotating around its own axis, an adjustment knob disposed on the top surface of the mounting base and axially connected to the bidirectional lead screw, two lead screw nuts disposed on the bidirectional lead screw, and a guide hole disposed on the side of the mounting base facing the clamping unit and parallel to the bidirectional lead screw; the support claw includes two support rods, the inner ends of the two support rods are respectively connected to the two lead screw nuts, and the outer ends pass through the guide hole, and the gear to be tested is sleeved on the outer ends of the two support rods.

4. The gear run-out detection apparatus according to claim 2, characterized by: The rotary drive mechanism includes a rotary unit and a rotary shaft disposed on the side plate. One end of the rotary shaft is connected to the output shaft of the rotary unit, and the other end is connected to the mounting base.

5. The gear run-out detection apparatus of claim 3, wherein: The outer surfaces of both support rods are covered with a wear-resistant rubber layer.

6. The gear run-out detection apparatus of claim 3, wherein: A vertical plate for assembling the clamping unit is provided at one end of the base plate away from the side plate. The clamping unit includes a push rod, a pressure plate, an operating handle, and a return spring. The push rod is slidably inserted into the vertical plate. The pressure plate is rotatably connected to one end of the push rod near the mounting base. The operating handle is fixedly connected to the other end of the push rod and located on one side of the vertical plate. The return spring is sleeved on the outside of the push rod, and both ends of the return spring are fixedly connected to the vertical plate and the operating handle, respectively.

7. The gear run-out detection apparatus of claim 6, wherein: The clamping plate has two through holes corresponding to the positions of the two support rods. The ends of the two support rods away from the mounting base are respectively inserted into the two through holes. When the mounting base rotates under the drive of the rotary drive mechanism, the two support rods can drive the clamping plate to rotate synchronously through the two through holes.

8. The gear runout detection device according to claim 1, characterized in that: The top plate has a first through hole along the longitudinal direction for the dial indicator to pass through, and a second through hole along the transverse direction communicating with the first through hole. A locking bolt is provided in the second through hole, and the dial indicator is fixed in the first through hole by the locking bolt.

9. The gear run-out detection apparatus of claim 1, wherein: The lower surface of the base plate is provided with an anti-slip pad.

10. The gear run-out detection apparatus of claim 2, wherein: The mounting base is provided with two reinforcing rods extending towards the side plate on one side of the side plate, and the two reinforcing rods are supported at the center point of the mounting base; the side plate is provided with a track groove on the side of the side plate facing the mounting base, and the two ends of the two reinforcing rods away from the mounting base are both slidingly connected in the track groove.

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