Gear shaft class deflection measuring device

Abstract

The present application relates to the technical field of deflection measurement, and discloses a gear shaft deflection measurement device, which comprises a supporting platform, a clamping mechanism, a driving mechanism and a detection mechanism. The clamping mechanism comprises a first clamping piece and a second clamping piece which are arranged on the supporting platform along a first horizontal direction. The first clamping piece and the second clamping piece are configured to clamp the two ends of the rotating shaft of the gear shaft to be measured, so that the axis of the gear shaft to be measured is arranged along the first horizontal direction. The clamping mechanism allows the rotating shaft to rotate around its own axis. The driving mechanism comprises a driving wheel, an extension piece and a driver. The extension piece is used to drive the driving wheel to abut against the peripheral wall of the rotating shaft. The driver drives the driving wheel to rotate. The axis of the driving wheel is arranged along the first horizontal direction. The detection mechanism is used to detect the deflection of the gear on the gear shaft to be measured. During the whole process, the driving mechanism continuously drives the gear shaft to be measured to rotate at a constant speed, thereby improving the measurement accuracy of the deflection.

Description

Technical Field

[0001] This invention relates to the field of runout measurement technology, and more particularly to a device for measuring the runout of gear shafts. Background Technology

[0002] In industrial sectors such as rail transportation, heavy machinery manufacturing, wind power generation, and large machine tools, long gear shafts (such as drive shafts, spindles, and axles) are core foundational components affecting the overall performance of machines, bearing the important functions of power transmission and structural support. The assembly quality of the shafts and gears in these parts directly affects the operational reliability, lifespan, and energy efficiency of the entire machine.

[0003] The geometric accuracy (such as straightness, roundness, and coaxiality) of the long gear shaft workpiece itself, as well as the assembly quality of its mating parts such as gears and bearings, have a critical impact on the vibration, noise, transmission efficiency, and system stability of the equipment. Especially under high-speed, heavy-load, or high-precision application conditions, even small geometric deviations can lead to system failure. Among these, the axial runout (runaway) after the gear and shaft are assembled is one of the core indicators for measuring the quality of the workpiece. Excessive runaway will cause poor gear meshing, uneven load, and consequently lead to abnormal vibration, increased noise, aggravated local temperature rise, and even serious failures such as broken teeth, system vibration, or bearing damage.

[0004] To ensure the accuracy of gear shaft runout measurement, the gear shaft under test needs to maintain a constant rotational speed and avoid interruptions to reduce measurement errors caused by unstable rotation. However, in existing gear shaft runout measurement devices, the gear shaft under test is usually manually driven by the operator, which cannot guarantee a constant rotational speed, resulting in low measurement accuracy of gear runout.

[0005] Therefore, there is an urgent need for a gear shaft runout measuring device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a gear shaft runout measuring device to solve the problem that when the shaft is manually driven by the operator, it is impossible to ensure a constant shaft speed, which results in low measurement accuracy of the gear runout on the shaft.

[0007] This invention provides a gear shaft runout measuring device, which includes: Support platform; The clamping mechanism includes a first clamping member and a second clamping member spaced apart on the support platform along a first horizontal direction. The first clamping member and the second clamping member are configured to clamp both ends of the rotating shaft of the gear shaft to be tested, so that the axis of the rotating shaft is set along the first horizontal direction. The clamping mechanism allows the rotating shaft to rotate about its own axis. The driving mechanism includes a driving wheel, a telescopic component, and a driver. The telescopic component is used to drive the driving wheel to abut against the peripheral wall of the rotating shaft. The driver drives the driving wheel to rotate. The axis of the driving wheel is arranged along the first horizontal direction. The testing mechanism is used to detect the runout of the gear on the gear shaft to be tested.

[0008] As a preferred technical solution for a gear shaft runout measuring device, the telescopic component is fixed to the support platform and located at the bottom of the gear shaft to be measured in the vertical direction; The drive mechanism further includes a fixed frame and a swing frame. The fixed frame is fixed to the support platform and spaced apart from the telescopic member along the second horizontal direction. One end of the swing frame is hinged to the fixed frame, and the other end is located between the telescopic member and the rotating shaft along the vertical direction. The telescopic member acts on the other end of the swing frame, and the drive wheel is rotatably disposed at the other end of the swing frame. The first horizontal direction is perpendicular to the second horizontal direction.

[0009] As a preferred technical solution for a gear shaft runout measuring device, the drive mechanism further includes an elastic element, one end of which is fixedly connected to the other end of the swing frame, and the other end is fixedly connected to the telescopic part of the telescopic element.

[0010] As a preferred technical solution for a gear shaft runout measuring device, the detection mechanism includes a sliding component and a measuring component. The sliding component is disposed on the support platform and can drive the measuring component to slide along the first horizontal direction or the second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction.

[0011] As a preferred technical solution for a gear shaft runout measuring device, the sliding component includes a first electric slide rail and a second electric slide rail. The first electric slide rail is disposed on the support platform, and the first electric slide rail can drive the second electric slide rail to slide along the second horizontal direction. The second electric slide rail can drive the measuring component to slide along the first horizontal direction.

[0012] As a preferred technical solution for a gear shaft runout measuring device, the measuring component includes a first measuring head and a second measuring head. The first measuring head is used to measure the distance between the second measuring head and the gear, and the second measuring head is used to measure the runout of the gear.

[0013] As a preferred technical solution for a gear shaft runout measuring device, the first clamping member is fixed to the support platform, and the second clamping member is slidably disposed on the support platform along the first horizontal direction, and has a sliding state and a fixed state relative to the support platform. In the sliding state, the second clamping member slides relative to the support platform, and in the fixed state, the second clamping member is fixed relative to the support platform.

[0014] As a preferred technical solution for a gear shaft runout measuring device, the first clamping member includes a first support base and a first pin rotatably disposed on the first support base, wherein the first pin can be inserted into a tapered hole at one end of the rotating shaft.

[0015] As a preferred technical solution for a gear shaft runout measuring device, the second clamping member includes a fixed slide rail, a drive assembly, a second support base, and a second ejector pin. The fixed slide rail is fixed to the support platform along the first horizontal direction. The second support base is slidably disposed on the fixed slide rail. The drive assembly drives the second support base to slide on the fixed slide rail. The second ejector pin is rotatably disposed on the second support base and can be inserted into the tapered hole at the other end of the rotating shaft.

[0016] As a preferred technical solution for a gear shaft runout measuring device, the second support base is provided with a sliding hole along the first horizontal direction; The second ejector pin includes an ejector cylinder and an ejector pin portion. The ejector pin portion is inserted into the sliding hole from one end of the sliding hole near the first clamping member. The ejector cylinder is inserted into the sliding hole from one end of the sliding hole away from the first clamping member and is fixedly connected to the second support base. The ejector cylinder can drive the ejector pin portion to slide within the sliding hole.

[0017] The gear shaft runout measuring device provided by this invention has at least the following beneficial effects: This gear shaft runout measuring device includes a support platform, a clamping mechanism, a drive mechanism, and a detection mechanism. The clamping mechanism includes a first clamping member and a second clamping member spaced apart along a first horizontal direction on the support platform. The first and second clamping members are configured to clamp both ends of the rotating shaft of the gear shaft to be measured, so that the axis of the gear shaft to be measured is set along the first horizontal direction. The clamping mechanism allows the rotating shaft to rotate around its own axis. The drive mechanism includes a drive wheel, a telescopic member, and a driver. The telescopic member is used to drive the drive wheel to abut against the peripheral wall of the rotating shaft. The driver drives the drive wheel to rotate. The axis of the drive wheel is set along the first horizontal direction. The detection mechanism is used to detect the runout of the gear on the gear shaft to be measured. When using this gear shaft runout measuring device to measure the runout of the gear on the gear shaft to be measured, the first and second clamping members clamp both ends of the rotating shaft of the gear shaft to be measured. Then, the driver drives the drive wheel to rotate. Since the drive wheel and the rotating shaft are pressed together, the drive wheel drives the rotating shaft to rotate on the clamping mechanism under the action of static friction. During this process, the detection mechanism completes the detection of the runout of the gear on the gear shaft to be measured. Throughout the process, the drive mechanism continuously drives the gear shaft under test to rotate at a constant speed, which helps to improve the measurement accuracy of the runout. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the gear shaft runout measuring device in an embodiment of the present invention; Figure 2 This is a schematic diagram of the drive mechanism of the gear shaft runout measuring device in an embodiment of the present invention; Figure 3 This is a schematic diagram of the detection mechanism of the gear shaft runout measuring device in an embodiment of the present invention.

[0019] In the picture: X, first horizontal direction; Y, second horizontal direction; Z, vertical direction; 100. Gear shaft to be tested; 101. Shaft; 102. Gear; 1. Support platform; 21. First clamping member; 211. First support base; 212. First ejector pin; 22. Second clamping member; 221. Fixed slide rail; 222. Drive assembly; 223. Second support base; 224. Second ejector pin; 2241. Ejection cylinder; 2242. Ejector pin part; 3. Drive mechanism; 31. Drive wheel; 32. Telescopic component; 33. Driver; 34. Fixed frame; 35. Swing frame; 36. Elastic component; 4. Testing mechanism; 41. Sliding assembly; 411. First electric slide rail; 412. Second electric slide rail; 42. Measuring assembly; 421. First measuring head; 422. Second measuring head. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] like Figures 1 to 3As shown, this embodiment provides a gear shaft runout measuring device, which includes a support platform 1, a clamping mechanism, a drive mechanism 3, and a detection mechanism 4. The clamping mechanism includes a first clamping member 21 and a second clamping member 22 spaced apart along a first horizontal direction X on the support platform 1. The first clamping member 21 and the second clamping member 22 are configured to clamp the two ends of the rotating shaft 101 of the gear shaft 100 to be measured, so that the axis of the gear shaft 100 to be measured is set along the first horizontal direction X. The clamping mechanism allows the rotating shaft 101 to rotate around its own axis. The drive mechanism 3 includes a drive wheel 31, a telescopic member 32, and a driver 33. The telescopic member 32 is used to drive the drive wheel 31 to abut against the peripheral wall of the rotating shaft 101, and the driver 33 drives the drive wheel 31 to rotate. The axis of the drive wheel 31 is set along the first horizontal direction X. The detection mechanism 4 is used to detect the runout of the gear 102 on the gear shaft 100 to be measured. When using this gear shaft runout measuring device to measure the runout of gear 102 on the gear shaft 100 under test, the first clamping member 21 and the second clamping member 22 clamp the two ends of the rotating shaft 101 of the gear shaft 100 under test. Then, the driver 33 drives the drive wheel 31 to rotate. Since the drive wheel 31 and the rotating shaft 101 are pressed together, the drive wheel 31 drives the rotating shaft 101 to rotate on the clamping mechanism under the action of static friction. During this process, the detection mechanism 4 completes the detection of the runout of gear 102 on the gear shaft 100 under test. Throughout the process, the drive mechanism 3 continuously drives the gear shaft 100 under test to rotate at a constant speed, which helps to improve the measurement accuracy of the runout.

[0025] Optionally, the telescopic member 32 is fixed to the support platform 1 and located at the bottom of the gear shaft 100 to be tested along the vertical direction Z; the drive mechanism 3 also includes a fixed frame 34 and a swing frame 35. The fixed frame 34 is fixed to the support platform 1 and is spaced apart from the telescopic member 32 along the second horizontal direction Y. One end of the swing frame 35 is hinged to the fixed frame 34, and the other end is located between the telescopic member 32 and the rotating shaft 101 along the vertical direction Z. The telescopic member 32 acts on the other end of the swing frame 35, and the drive wheel 31 is rotatably located at the other end of the swing frame 35; the first horizontal direction X and the second horizontal direction Y are perpendicular. In this embodiment, since the telescopic member 32 needs to drive the swing frame 35 closer to the rotating shaft 101, the telescopic member 32 and the drive wheel 31 need to be respectively arranged on both sides of the swing frame 35. To allow space for the telescopic member 32 between the swing frame 35 and the support platform 1, a fixing frame 34 is arranged between one end of the swing frame 35 and the support platform 1. The fixing frame 34 keeps the swing frame 35 and the support platform 1 spaced apart, thus reserving installation space for the telescopic member 32. The telescopic member 32 drives the swing frame 35 to swing closer to the rotating shaft 101, thereby keeping the drive wheel 31 in a tight abutment against the peripheral wall of the rotating shaft 101. It should be noted that the abutment force of the drive wheel 31 against the rotating shaft 101 is less than the force required for the rotating shaft 101 to deform.

[0026] Optionally, the driver 33 is a motor, which is fixed to one end of the swing frame 35 and on the same side as the drive wheel 31. The driver 33 and the drive wheel 31 are connected by a belt drive. In other embodiments, the driver 33 and the drive wheel 31 are connected by a transmission gear.

[0027] Optionally, the drive wheel 31 is a rubber wheel. Rubber can increase the static friction between the drive wheel 31 and the rotating shaft 101, prevent slippage, and avoid fluctuations in the rotational speed of the gear shaft 100 under test.

[0028] Optionally, the drive mechanism 3 further includes an elastic element 36, one end of which is fixedly connected to the other end of the swing frame 35, and the other end is fixedly connected to the telescopic part of the telescopic element 32. In this embodiment, the main function of the elastic element 36 is to buffer. Since the gear shaft 100 under test is large in size and weight, it may collide with the drive wheel 31 when it is installed on the clamping mechanism. Therefore, the buffer can prevent the drive wheel 31 from having a hard collision with the gear shaft 100 under test, thereby avoiding damage to the surface of the gear shaft 100 under test.

[0029] Specifically, the elastic element 36 can be a helical spring, or in other embodiments, it can be elastic rubber.

[0030] Optionally, the detection mechanism 4 includes a sliding component 41 and a measuring component 42. The sliding component 41 is disposed on the support platform 1 and can drive the measuring component 42 to slide along a first horizontal direction X or a second horizontal direction Y. In this embodiment, the sliding component 41 drives the measuring component 42 to slide in the first horizontal direction X, thereby moving the measuring component 42 to one side of the gear 102 and preventing the measuring component 42 from colliding with the gear 102 when it moves in the second horizontal direction Y. Subsequently, the measuring component 42 is driven to move in the second horizontal direction Y so that the measuring component 42 is opposite to one side wall of the gear 102 in the first horizontal direction X. Finally, the measuring component 42 is driven to move in the second horizontal direction Y to meet the measurement distance of the measuring component 42 to the gear 102 in the first horizontal direction X.

[0031] Optionally, the sliding component 41 includes a first electric slide rail 411 and a second electric slide rail 412. The first electric slide rail 411 is disposed on the support platform 1 and can drive the second electric slide rail 412 to slide along the second horizontal direction Y. The second electric slide rail 412 can drive the measuring component 42 to slide along the first horizontal direction X. In this embodiment, the first electric slide rail 411 includes a first driving member, two first slide rails, two first sliders, two first lead screws, and two first nuts. The two first slide rails extend along the second horizontal direction Y and are spaced apart along the first horizontal direction X. The two first sliders are slidably disposed on the two first slide rails, the two nuts are fixedly disposed on the two first sliders, and the two first lead screws are screwed to the two first nuts. The first driving member drives the two first lead screws to rotate synchronously, thereby causing the two first sliders to slide synchronously on the two first slide rails. The second electric slide rail 412 is simultaneously fixedly connected to the two first sliders.

[0032] Optionally, the first driving component includes a first motor, a first transmission rod, and two worm gears. The two worm gears are sleeved on two first lead screws and fixedly connected to the two first lead screws respectively. The two ends of the first transmission rod are configured as worms so that the two ends of the first transmission rod mesh with the two worm gears respectively. The first motor drives the first transmission rod to rotate.

[0033] Optionally, the second electric slide rail 412 includes a second slide rail, a second slider, a second lead screw, a second nut, and a second motor. The second slide rail is fixedly connected to two first sliders respectively. The second slider is slidably disposed on the second slide rail along the first horizontal direction X. The second nut is fixedly connected to the second slider. The second lead screw is screwed to the second nut. The second motor is disposed at one end of the second slide rail and drives the second lead screw to rotate.

[0034] In existing technology, only one measuring head is used to measure the runout of gear 102. Operators need to repeatedly adjust the distance between the measuring head and gear 102 to meet the required measurement distance. This manual adjustment is inefficient. To address this issue, the measuring assembly 42 may optionally include a first measuring head 421 and a second measuring head 422. The first measuring head 421 measures the distance between the second measuring head 422 and gear 102, and the second measuring head 422 measures the runout of gear 102. In this embodiment, the first measuring head 421 measures the distance between the second measuring head 422 and gear 102, allowing for quick adjustment of this distance and improving work efficiency.

[0035] In addition, the sliding component 41 has a position memory function. After the distance between the second measuring head 422 and the gear shaft 100 to be measured is adjusted for the first time, the sliding component 41 can directly move the measuring component 42 to the position of the first measurement when performing the second measurement.

[0036] Optionally, the first clamping member 21 is fixed to the support platform 1, and the second clamping member 22 is slidably disposed on the support platform 1 along the first horizontal direction X, and has a sliding state and a fixed state relative to the support platform 1. In the sliding state, the second clamping member 22 slides relative to the support platform 1, and in the fixed state, the second clamping member 22 is fixed relative to the support platform 1. In this embodiment, the gear shaft 100 to be tested is suspended between the first clamping member 21 and the second clamping member 22. First, the first clamping member 21 and one end of the rotating shaft 101 abut against each other. Then, the second clamping member 22 switches to the sliding state so that the second clamping member 22 clamps the other end of the rotating shaft 101. Then, the second clamping member 22 switches to the fixed state so that the first clamping member 21 and the second clamping member 22 clamp the rotating shaft 101.

[0037] Optionally, the first clamping member 21 includes a first support base 211 and a first ejector pin 212 rotatably disposed on the first support base 211. The first ejector pin 212 can be inserted into a tapered hole at one end of the rotating shaft 101. In this embodiment, the first support base 211 is provided with a first insertion hole along a first horizontal direction X. The first ejector pin 212 is inserted into the first insertion hole. The first ejector pin 212 and the first support base 211 rotate around the axis of the first insertion hole, and the first ejector pin 212 is relatively fixed relative to the first support base 211 along the axis of the first insertion hole. The first ejector pin 212 inserted into the tapered hole at one end of the rotating shaft 101 serves to support the rotating shaft 101 on the one hand, and on the other hand, ensures that the axis of the first ejector pin 212 is collinear with the axis of the rotating shaft 101.

[0038] Optionally, the first ejector pin 212 and the first support seat 211 are connected by a tapered roller bearing.

[0039] Optionally, the second clamping member 22 includes a fixed slide rail 221, a drive assembly 222, a second support base 223, and a second ejector pin 224. The fixed slide rail 221 is fixed to the support platform 1 along a first horizontal direction X. The second support base 223 is slidably disposed on the fixed slide rail 221. The drive assembly 222 drives the second support base 223 to slide on the fixed slide rail 221. The second ejector pin 224 is rotatably disposed on the second support base 223 and can be inserted into the tapered hole at the other end of the rotating shaft 101. In this embodiment, when the second clamping member 22 is in a sliding state, the drive assembly 222 drives the second support base 223 to slide on the fixed slide rail 221. When the second clamping member 22 is in a fixed state, the drive assembly 222 fixes the second support base 223 on the fixed slide rail 221. The second support base 223 has a sliding hole along the first horizontal direction X. The second ejector pin 224 is inserted into the sliding hole. The second ejector pin 224 and the second support base 223 rotate around the axis of the second insertion hole, and the second ejector pin 224 is relatively fixed to the second support base 223 along the axis of the sliding hole. The second ejector pin 224 is inserted into the tapered hole at the other end of the rotating shaft 101, which serves to support the rotating shaft 101 on the one hand, and ensures that the axis of the second ejector pin 224 is collinear with the axis of the rotating shaft 101 on the other hand.

[0040] Optionally, the second ejector pin 224 and the second support 223 are connected by a tapered roller bearing.

[0041] Optionally, the drive assembly 222 includes a motor and a lead screw. The second support 223 is provided with a screw hole. The lead screw is rotatably mounted on the support platform 1 along the first horizontal direction X and passes through the screw hole on the second support 223 so that the lead screw and the second support 223 are screwed together. The motor drives the lead screw to rotate so that the second support 223 slides on the fixed slide rail 221.

[0042] Optionally, the second ejector pin 224 includes an ejector cylinder 2241 and an ejector pin portion 2242. The ejector pin portion 2242 is inserted into the sliding hole from the end near the first support base 211, and the ejector cylinder 2241 is inserted into the sliding hole from the end away from the first support base 211 and fixedly connected to the second support base 223. The ejector cylinder 2241 can drive the ejector pin portion 2242 to slide within the sliding hole. In this embodiment, the motor drives the second support base 223 to move towards the first support base 211, so that the first ejector pin 212 and the second ejector pin 224 achieve initial positioning and clamping of the rotating shaft 101. Subsequently, the ejector cylinder 2241 ejects the ejector pin portion 2242, thereby achieving final positioning and clamping of the rotating shaft 101 by the first ejector pin 212 and the second ejector pin 224. This ensures that the rotating shaft 101, the first ejector pin 212, and the second ejector pin 224 are located on the same axis.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A device for measuring the runout of gear shafts, characterized in that, include: Support platform (1); The clamping mechanism includes a first clamping member (21) and a second clamping member (22) spaced apart along a first horizontal direction (X) on the support platform (1). The first clamping member (21) and the second clamping member (22) are configured to clamp the two ends of the rotating shaft (101) of the gear shaft (100) to be tested, so that the axis of the rotating shaft (101) is set along the first horizontal direction (X). The clamping mechanism allows the rotating shaft (101) to rotate about its own axis. The drive mechanism (3) includes a drive wheel (31), a telescopic member (32) and a driver (33). The telescopic member (32) is used to drive the drive wheel (31) to abut against the peripheral wall of the rotating shaft (101). The driver (33) drives the drive wheel (31) to rotate. The axis of the drive wheel (31) is set along the first horizontal direction (X). The detection mechanism (4) is used to detect the runout of the gear (102) on the gear shaft (100) to be tested; The telescopic component (32) is fixed to the support platform (1) and located at the bottom of the gear shaft (100) to be tested in the vertical direction (Z); The drive mechanism (3) further includes a fixed frame (34) and a swing frame (35). The fixed frame (34) is fixed to the support platform (1) and spaced apart from the telescopic member (32) along the second horizontal direction (Y). One end of the swing frame (35) is hinged to the fixed frame (34), and the other end is located between the telescopic member (32) and the rotating shaft (101) along the vertical direction (Z). The telescopic member (32) acts on the other end of the swing frame (35), and the drive wheel (31) is rotatably disposed on the other end of the swing frame (35). The first horizontal direction (X) and the second horizontal direction (Y) are perpendicular; The drive mechanism (3) also includes an elastic element (36), one end of which is fixedly connected to the other end of the swing frame (35), and the other end is fixedly connected to the telescopic part of the telescopic element (32); The detection mechanism (4) includes a sliding component (41) and a measuring component (42). The sliding component (41) is disposed on the support platform (1) and can drive the measuring component (42) to slide along the first horizontal direction (X) or the second horizontal direction (Y). The first horizontal direction (X) and the second horizontal direction (Y) are perpendicular; The sliding assembly (41) includes a first electric slide rail (411) and a second electric slide rail (412). The first electric slide rail (411) is disposed on the support platform (1), and the first electric slide rail (411) can drive the second electric slide rail (412) to slide along the second horizontal direction (Y). The second electric slide rail (412) can drive the measuring assembly (42) to slide along the first horizontal direction (X). The measuring component (42) includes a first measuring head (421) and a second measuring head (422). The first measuring head (421) is used to measure the distance between the second measuring head (422) and the gear (102), and the second measuring head (422) is used to measure the deflection of the gear (102).

2. The gear shaft runout measuring device according to claim 1, characterized in that, The first clamping member (21) is fixed to the support platform (1), and the second clamping member (22) is slidably disposed on the support platform (1) along the first horizontal direction (X), and has a sliding state and a fixed state relative to the support platform (1). In the sliding state, the second clamping member (22) slides relative to the support platform (1), and in the fixed state, the second clamping member (22) is fixed relative to the support platform (1).

3. The gear shaft runout measuring device according to claim 2, characterized in that, The first clamping member (21) includes a first support base (211) and a first ejector pin (212) rotatably disposed on the first support base (211). The first ejector pin (212) can be inserted into a tapered hole at one end of the rotating shaft (101).

4. The gear shaft runout measuring device according to claim 2, characterized in that, The second clamping member (22) includes a fixed slide rail (221), a drive assembly (222), a second support base (223), and a second ejector pin (224). The fixed slide rail (221) is fixed to the support platform (1) along the first horizontal direction (X). The second support base (223) is slidably disposed on the fixed slide rail (221). The drive assembly (222) drives the second support base (223) to slide on the fixed slide rail (221). The second ejector pin (224) is rotatably disposed on the second support base (223) and can be inserted into the tapered hole at the other end of the rotating shaft (101).

5. The gear shaft runout measuring device according to claim 4, characterized in that, The second support (223) is provided with a sliding hole along the first horizontal direction (X); The second ejector pin (224) includes an ejector cylinder (2241) and an ejector pin portion (2242). The ejector pin portion (2242) is inserted into the sliding hole from one end of the sliding hole near the first clamping member (21). The ejector cylinder (2241) is inserted into the sliding hole from one end of the sliding hole away from the first clamping member (21) and is fixedly connected to the second support base (223). The ejector cylinder (2241) can drive the ejector pin portion (2242) to slide in the sliding hole.

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