Measuring device

Abstract

The utility model discloses a measuring device which is used for measuring a driving part, the driving part comprises an output shaft and a gear structure in transmission connection with the output shaft, the measuring device comprises a supporting pedestal, a transmission shaft and a motion assembly, the transmission shaft is rotationally connected to the supporting pedestal, and the transmission shaft is used for being connected with the output shaft and synchronously rotating; the movement assembly is connected to the transmission shaft and configured in the mode that at least part of the structure in the movement assembly can move in the first direction so as to drive the transmission shaft to rotate around the axis of the transmission shaft, and the first direction is perpendicular to the axis direction. The measuring device can be used for testing a plurality of parameters of the driving part, the parameters can be used for evaluating the use performance of different driving parts, a technician can select a proper driving part conveniently, and the stability and the use precision of the driving part can be improved by adjusting the parameters.

Description

Technical Field

[0001] The present application relates to the technical field of motor testing, and in particular to a measuring device. Background Art

[0002] The return difference is an important data to measure the internal transmission accuracy of the motor. Due to the tolerance of gear size or thermal expansion and contraction of gears, there will be a certain gap between the two gears at the meshing point of the pitch circle. After the transmission amplification of the multi-stage gears in the motor, a certain return difference will be generated when the motor is reversed. The pull-in torque refers to the torque value generated during the motor startup process to overcome the mechanical inertia and external load requirements of the motor at startup. The pull-out torque refers to the maximum torque that can make the rotating shaft run continuously at a constant speed without losing steps.

[0003] The return difference is the difference in angle after the gears rotate in multiple stages. The specific values ​​of the pull-in torque, pull-out torque and return difference are difficult to calculate. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a measuring device to solve the problem in the prior art that data such as the return difference of the driving member, the pull-in torque, and the migration torque are difficult to measure and the measurement is inaccurate.

[0005] The technical solution of this application is as follows:

[0006] According to an embodiment of the present application, a measuring device is proposed for measuring a driving member, which includes an output shaft and a gear structure drivingly connected to the output shaft, and is characterized in that the measuring device includes: a support base; a transmission shaft, rotatably connected to the support base, the transmission shaft is used to connect to the output shaft and rotate synchronously; a motion component, the motion component is connected to the transmission shaft, and the motion component is configured so that at least part of the structure in the motion component can move along a first direction to drive the transmission shaft to rotate around its own axis, and the first direction is perpendicular to the axis direction.

[0007] According to one aspect of an embodiment of the present application, the motion component includes a traction member and a counterweight member connected to the traction member, the traction member is wound around an axis and arranged outside the transmission shaft, and the motion component is configured so that when the counterweight member moves along a first direction, at least a portion of the structure in the traction member is transformed from a wound state to a straight state, and drives the transmission shaft to rotate.

[0008] According to one aspect of an embodiment of the present application, the motion component also includes a rotating member, which is connected to the transmission shaft and rotates synchronously, and a traction member is wound around the outer peripheral side of the rotating member, and one end of the traction member is connected to the rotating member, and the other end is connected to the counterweight member.

[0009] According to one aspect of an embodiment of the present application, it also includes an indicator and a dial, one of which is fixed to a support base, and the other rotates synchronously with the transmission shaft; wherein the projection of the indicator in the axial direction overlaps with the projection of the dial in the axial direction.

[0010] According to one aspect of the embodiment of the present application, it also includes a bearing seat, and the bearing seat is provided with a first connecting hole along the axial direction, and the transmission shaft passes through the first connecting hole and is rotatably connected to the bearing seat.

[0011] According to one aspect of an embodiment of the present application, the bearing seat includes a first part and a second part arranged along the axial direction, a second connecting hole is opened along the axial direction of the support seat, the second part partially passes through the second connecting hole, the second part is fixedly connected to the support seat, and the radial dimension of the first part is greater than the radial dimension of the second connecting hole.

[0012] According to one aspect of the embodiment of the present application, the fastener is sleeved on a portion of the outer circumference of the second portion, and two surfaces of the fastener opposite to each other in the axial direction are respectively in contact with the first portion and the support seat.

[0013] According to one aspect of an embodiment of the present application, the support base includes a base and a support member located on one side of the base along a first direction. A plurality of support members are provided, and the plurality of support members are arranged at intervals along an axial direction. The second connecting hole is opened in the support member.

[0014] According to one aspect of an embodiment of the present application, it also includes a sound testing component, which includes a mounting component and a detection unit arranged on a support base, the mounting component is spaced apart from the transmission shaft along the axial direction, the detection unit is connected to the mounting component, and the mounting component is configured to be able to adjust the position of the detection unit.

[0015] According to one aspect of an embodiment of the present application, the mounting assembly includes a first mounting member and a second mounting member, the first mounting member is fixed to the base and is located on the same side of the base as the support member, the first mounting member extends along a first direction, the second mounting member slides along the first direction and is rotatably connected to the first mounting member, and the detection unit is slidably connected to the second mounting member.

[0016] The measuring device provided in the present application is used to measure a driving member, wherein the driving member includes an output shaft and a gear structure connected to the output shaft, and the measuring device includes a support base, a transmission shaft and a motion component, wherein the transmission shaft is rotatably connected to the support base, and the transmission shaft is used to connect the output shaft and rotate synchronously; the motion component is connected to the transmission shaft, and the motion component is configured such that at least part of the structure in the motion component can move along a first direction to drive the transmission shaft to rotate around its own axis, and the first direction intersects with the axis direction. The measuring device can be used to test multiple parameters of the driving member, evaluate the assembly quality and gear accuracy of the driving member, and improve the stability of the driving member and extend the life of the driving member by adjusting the assembly or replacing the gears.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0019] Figure 1 is a schematic diagram of the structure of a measuring device involved in an embodiment of the present application;

[0020] Figure 2 is a top view of a measuring device involved in an embodiment of the present application;

[0021] Figure 3 yes Figure 2 Cross-section view in the AA direction;

[0022] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0023] Figure 5 yes Figure 3 The enlarged view of point B in the middle;

[0024] Figure 6 It is a side view of the measuring device involved in the embodiment of the present application.

[0025] Marking Description:

[0026] 100, driving member; 1001, output shaft;

[0027] 1. Supporting seat; 11. Base; 12. Supporting member; 121. Second connecting hole;

[0028] 2. Transmission shaft; 21. First connecting hole; 3. Moving component; 31. Counterweight; 32. Traction member; 33. Rotating member;

[0029] 4. Indicator; 5. Dial;

[0030] 6. bearing seat; 61. first part; 62. second part; 63. first connecting hole;

[0031] 7. Sound test assembly; 71. Mounting assembly; 711. First mounting member; 712. Second mounting member; 72. Detection unit; 721. Connecting shaft; 722. Clamp;

[0032] 8. First connecting member; 9. Fastener; 10. Second connecting member;

[0033] X, axis direction; Y, first direction. DETAILED DESCRIPTION

[0034] In order to make those of ordinary skill in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are only examples consistent with some aspects of the present application as detailed in the attached claims.

[0036] The return difference is an important data to measure the internal transmission accuracy of the motor. Due to the tolerance of gear size or thermal expansion and contraction of gears, there will be a certain gap between the two gears at the meshing point of the pitch circle. After the transmission amplification of the multi-stage gears in the motor, a certain return difference will be generated when the motor is reversed. The pull-in torque refers to the torque value generated during the motor startup process to overcome the mechanical inertia and external load requirements of the motor at startup. The pull-out torque refers to the maximum torque that can make the rotating shaft run continuously at a constant speed without losing steps.

[0037] The return difference is the difference in angle after the gear rotates in multiple stages. The specific values ​​of the pull-in torque, the pull-out torque and the return difference are difficult to calculate. In order to solve the above technical problems, the present application provides a testing device. The following is a detailed description of the measuring device provided in the embodiment of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0038] Figure 1 It is a schematic diagram of the structure of the measuring device involved in the embodiment of the present application. Figure 2 It is a top view of the measuring device involved in the embodiment of the present application. Figure 3 yes Figure 2 Cross-section view along the AA direction. Figure 4 yes Figure 3 Enlarged view of point A in the middle. Figure 5 yes Figure 3 Enlarged view of point B in the middle. Figure 6 It is a side view of the measuring device involved in the embodiment of the present application.

[0039] like Figure 1 As shown, the measuring device provided in the embodiment of the present application is used to measure the driving member 100, and the driving member 100 includes an output shaft 1001 and a gear structure that is transmission-connected to the output shaft 1001, and the measuring device includes: a support base 1; a transmission shaft 2, which is rotationally connected to the support base 1, and the transmission shaft 2 is used to connect to the output shaft 1001 and rotate synchronously; a motion component 3, and the motion component 3 is connected to the transmission shaft 2, and the motion component 3 is configured so that at least part of the structure in the motion component 3 can move along a first direction Y to drive the transmission shaft 2 to rotate around its own axis, and the first direction Y is perpendicular to the axis direction X.

[0040] It should be noted that the measuring device provided in the embodiment of the present application is mainly used to measure the driving component 100. The type of the driving component 100 is not limited here. Any driving component 100 including a gear structure, such as a stepper motor, etc., can be tested using the above-mentioned measuring device.

[0041] The measuring device includes a transmission shaft 2, which is rotatably connected to the support base 1 and is used to connect to the output shaft 1001 and rotate synchronously. The axial directions X of the transmission shaft 2 and the output shaft 1001 are arranged in parallel to ensure that the transmission shaft 2 and the output shaft 1001 can rotate synchronously. Optionally, the axial direction X of the transmission shaft 2 coincides with the axial direction X of the output shaft 1001. There are multiple ways to connect the transmission shaft 2 and the output shaft 1001, for example, Figure 5As shown, the end face of the transmission shaft 2 along the axial direction X is provided with a recessed portion, and a first connecting hole 21 is provided in the radial direction. The output shaft 1001 extends into the recessed portion and passes through the first connecting hole 21 through the first connecting member 8 to achieve the connection between the two, wherein the recessed portion can be a through hole provided on the transmission shaft 2 along the axial direction X, or a groove provided on the end face along the axial direction X, and the first connecting hole 21 can be a threaded hole or a smooth hole, and correspondingly, the first connecting member 8 can be a standard part such as a screw or a bolt. There are multiple ways to connect the transmission shaft 2 and the support base 1. Optionally, a through hole is provided on the support base 1 along the axial direction X, and the transmission shaft 2 passes through the through hole to be rotatably connected with the support base 1.

[0042] The motion component 3 is connected to the transmission shaft 2, and the motion component 3 is configured so that at least part of the structure in the motion component 3 can move along the first direction Y to drive the transmission shaft 2 to rotate around its own axis, and the first direction Y is perpendicular to the axis direction X. The motion component 3 is mainly used to provide power for the measuring device. When at least part of the motion component 3 moves along the first direction Y, it can drive the transmission shaft 2 and the output shaft 1001 to realize the rotation of the multi-stage gears connected to the output shaft 1001. Optionally, the first direction Y is the direction of gravity to ensure that the direction of the first direction Y always points to the center of the earth, so as to ensure the accuracy of subsequent tests. Among them, the motion component 3 can have multiple types. Optionally, the motion component 3 can include a driving member 100 with a known rated torque, or the motion component 3 can use an artificial replacement.

[0043] The measuring device can be used to test multiple parameters of the driving member 100, and the assembly quality and gear accuracy of the driving member can be evaluated through the parameters. The stability of the driving member can be improved and the service life of the driving member can be extended by adjusting the assembly or replacing the gears.

[0044] Furthermore, in some embodiments, Figure 1 As shown, in order to improve the accuracy and reliability of the test, the above-mentioned motion component 3 includes a traction member 32 and a counterweight member 31 connected to the traction member 32. The traction member 32 is wound around the axis and arranged outside the transmission shaft 2. The motion component 3 is configured so that when the counterweight member 31 moves along the first direction Y, at least part of the structure in the traction member 32 is transformed from a wound state to a straight state, and drives the transmission shaft 2 to rotate.

[0045] The motion component 3 includes a traction member 32 and a counterweight member 31 connected to the traction member 32. The traction member 32 is wound around the axis and arranged outside the transmission shaft 2. The traction member 32 can be selected from a variety of types or materials. Optionally, the traction member 32 includes a rope, or the traction member 32 includes a metal chain, etc. Similarly, any structure with a certain weight can serve as the counterweight member 31. Optionally, the counterweight member 31 includes a weight to ensure the uniformity and standardization of the quality of the counterweight member 31, thereby improving the accuracy of the test results. At the same time, the mass of the weight is accurate and known, which facilitates the subsequent calculation and processing of the test results.

[0046] The motion component 3 is configured such that when the counterweight 31 moves along the first direction Y, at least part of the structure in the traction member 32 changes from a winding state to a straight state, and drives the transmission shaft 2 to rotate. Optionally, the first direction Y is a direction pointing to the center of the earth, so that the experimental data can be measured by utilizing the gravity and free fall motion of the counterweight 31, thereby ensuring the accuracy and stability of the experimental results. Exemplarily, the traction member 32 includes a rope, and the traction member 32 has two ends in the length direction, one end of which is connected to the counterweight 31, and the other end is wound on the outer peripheral surface of the transmission shaft 2. When the counterweight 31 performs free fall motion along the first direction Y, the traction member 32 wound on the transmission shaft 2 changes from a winding state to a straight state, and drives the transmission shaft 2 to rotate.

[0047] The transmission shaft 2 driven by the gravity of the counterweight 31 has a stable torque and a stable rotation state, which can ensure the accuracy of the test result and a high success rate of the test.

[0048] Furthermore, in some embodiments, in order to improve the stability of the connection of the traction member 32 on the outer side of the transmission shaft 2 and prevent the traction member 32 from slipping, as shown in FIG. Figure 1 The shown motion assembly 3 also includes a rotating member 33, which is connected to the transmission shaft 2 and rotates synchronously. The traction member 32 is wound around the outer peripheral side of the rotating member 33, and one end of the traction member 32 is connected to the rotating member 33, and the other end is connected to the counterweight 31.

[0049] The rotating member 33 is sleeved outside the transmission shaft 2 and rotates synchronously with the transmission shaft 2. The traction member 32 is wound on the outer peripheral side of the rotating member 33, and one end of the traction member 32 is connected to the rotating member 33, and the other end is connected to the counterweight 31. The connection between the traction member 32 and the rotating member 33 can have various forms. Optionally, an anti-slip structure can be provided on the outer peripheral side of the rotating member 33 to achieve the connection between the traction member 32 and the rotating member 33 through friction. Alternatively, a recessed structure can also be provided on the outer peripheral side of the rotating member 33. Exemplarily, a groove recessed along the radial direction of the rotating member 33 is provided on the outer peripheral side of the rotating member 33, and the traction member 32 is wound in the groove. The groove can provide a limit for the traction member 32 in the axial direction X, so that the traction member 32 will not slip with the transmission shaft 2, thereby ensuring the stability of the rotation of the transmission shaft 2.

[0050] Further, continue as Figure 1 As shown, in some embodiments, the measuring device further comprises an indicator 4 and a dial 5, one of which is fixed to the support pedestal 1, and the other rotates synchronously with the transmission shaft 2; wherein the projection of the indicator 4 in the axial direction X and the projection of the dial 5 in the axial direction X are arranged to overlap. The overlapping projection mentioned here means that on any plane perpendicular to the axial direction X, the orthographic projection of the indicator 4 on the plane and the orthographic projection of the dial 5 on the plane have an overlapping area.

[0051] The dial 5 and the indicator 4 are mainly used to measure the specific value of the value to be measured. Specifically, the dial 5 is provided with detailed scales. Optionally, the minimum accuracy of the dial 5 is set to 0.5° to improve the accuracy of the measuring device. The indicator 4 extends in the radial direction of the transmission shaft 2 in the direction away from the transmission shaft 2. The projection of the indicator 4 in the axial direction X overlaps with the projection of the dial 5 in the axial direction X to indicate the corresponding value on the dial 5. There are many situations for the positions of the indicator 4 and the dial 5. Optionally, the dial 5 is fixed to the support base 1, the indicator 4 is connected to the transmission shaft 2 and rotates synchronously with the transmission shaft 2, or the indicator 4 is fixed to the support base 1, and the dial 5 is connected to the transmission shaft 2 and rotates synchronously with the transmission shaft 2. In other words, the indicator 4 can be set on the dial 5, or can be set at a distance from the dial 5 in the axial direction X, as long as the projection of the indicator 4 in the axial direction X can overlap with the projection of the dial 5 in the axial direction X, so that the corresponding value on the dial 5 can be indicated by means of the indicator 4.

[0052] Furthermore, if Figure 2 and Figure 3As shown, in the embodiment, the measuring device also includes a bearing seat 6, the bearing seat 6 is provided with a first connecting hole 63 along the axial direction X, and the transmission shaft 2 passes through the first connecting hole 63 and is rotatably connected to the bearing seat 6; the bearing seat 6 includes a first part 61 and a second part 62 arranged along the axial direction X, the support seat 1 is provided with a second connecting hole 121 along the axial direction X, the second part 62 partially passes through the second connecting hole 121, and the second part 62 is fixedly connected to the support seat 1, and the radial dimension of the first part 61 is greater than the radial dimension of the second connecting hole 121.

[0053] The bearing seat 6 is provided with a first connecting hole 63 along the axial direction X. The transmission shaft 2 passes through the first connecting hole 63 and is rotatably connected to the bearing seat 6. The bearing seat 6 not only provides support for the transmission shaft 2, but also reduces the friction between the transmission shaft 2 and the support base 1.

[0054] The bearing seat 6 includes a first portion 61 and a second portion 62 arranged along the axial direction X. The support seat 1 is provided with a second connecting hole 121 along the axial direction X. The second portion 62 partially passes through the second connecting hole 121. The second portion 62 is fixedly connected to the support seat 1. The radial dimension of the first portion 61 is greater than the radial dimension of the second connecting hole 121. The bearing seat 6 partially passes through the second connecting hole 121 opened on the support seat 1 and is fixedly connected to the support seat 1 through the first portion 61 to realize the connection between the bearing seat 6 and the support seat 1. For example, Figure 3 As shown, a second connecting hole and a third connecting hole are respectively opened on the first part 61 and the support base 1 along the axial direction X, and the second connecting member 10 passes through the second connecting hole and the third connecting hole in sequence to achieve connection, wherein the second connecting hole and the third connecting hole can be threaded holes or smooth holes, and correspondingly, the second connecting member 10 can be a standard part such as a screw or a bolt.

[0055] The bearing seat 6 can not only reduce the friction between the transmission shaft 2 and the support base 1, making the torque loss generated by the moving component 3 smaller and the test result more accurate, but also serve as an extension of the support base 1 in the axial direction X to provide support for the transmission shaft 2, thereby ensuring the stability and reliability of the measuring device during the test.

[0056] Further preferably, in order to improve the tightness of the connection between the bearing seat 6 and the support seat 1, as Figure 3 As shown, the measuring device further includes a fastener 9, which is sleeved on a portion of the outer circumference of the second portion 62, and two opposite surfaces of the fastener 9 in the axial direction X are respectively in contact with the first portion 61 and the support seat 1. A fourth connecting hole is provided on the fastener 9, and the second connecting member 10 passes through the second connecting hole, the third connecting hole and the fourth connecting hole in sequence to realize the connection between the fastener 9, the bearing seat 6 and the support seat 1.

[0057] The fastener 9 can provide a limit for the bearing seat 6 in the axial direction X, and can also improve the tightness of the connection between the bearing seat 6 and the support base 1, thereby improving the stability and reliability of the measuring device.

[0058] Further, in some embodiments, the support base 1 includes a base 11 and a support member 12 located on one side of the base 11 along the first direction Y, a plurality of support members 12 are provided, and the plurality of support members 12 are arranged at intervals along the axial direction X, and a second connecting hole 121 is opened in the support member 12.

[0059] The support pedestal 1 includes a base 11 and a support member 12 located on one side of the base 11 along a first direction Y, wherein the base 11 extends along the axial direction X, and is mainly used to provide stable test conditions for structures such as the support member 12, the transmission shaft 2, and the driver 100. The support member 12 extends along the first direction Y and is located on one side of the base 11 in the first direction Y. A second connecting hole 121 is provided on the support member 12, and is mainly used to provide support for structures such as the transmission shaft 2 and the driver 100. For example, in some embodiments, the support member 12 is usually a support rod. The number of support members 12 can be set according to work requirements. Optionally, a plurality of support members 12 are provided, and are spaced apart along the axial direction X to provide a plurality of support points for the transmission shaft 2, balance the loads at various locations of the transmission shaft 2, and prevent the transmission shaft 2 from shaking and bending due to the influence of the counterweight 31, which not only improves the accuracy of the measurement data, but also prolongs the service life of the measurement device.

[0060] The noise value is also an important parameter reflecting the performance of the driver 100. It reflects the vibration, balance and mechanical friction of the internal gears of the driver 100. By detecting the sound index of the driver 100, it is possible to more specifically select drivers 100 with different performances.

[0061] Therefore, in some embodiments, the measuring device also includes a sound testing component 7, the sound testing component 7 includes a mounting component 71 and a detection unit 72 arranged on the support base 1, the mounting component 71 is spaced apart from the transmission shaft 2 along the axial direction X, the detection unit 72 is connected to the mounting component 71, and the mounting component 71 is configured to be able to adjust the position of the detection unit 72.

[0062] The sound testing assembly 7 includes an installation assembly 71 and a detection unit 72 arranged on the support base 1, wherein the detection unit 72 is used to monitor the specific value of the noise generated by the driving member 100, and the installation assembly 71 is arranged on the base 11 along the axial direction X and is spaced apart from the transmission shaft 2, and is used to connect the detection unit 72 and the support base 1 so that a suitable distance is maintained between the detection unit 72 and the driving member 100.

[0063] Furthermore, in order to achieve adjustable position of the detection unit 72, in some embodiments, the mounting assembly 71 includes a first mounting member 711 and a second mounting member 712, the first mounting member 711 is fixed to the base 11 and is located on the same side of the base 11 as the support member 12, the first mounting member 711 extends along the first direction Y, the second mounting member 712 slides along the first direction Y and is rotatably connected to the first mounting member 711, and the detection unit 72 is slidably connected to the second mounting member 712.

[0064] The first mounting member 711 is fixed to the base 11 and is located on the same side of the base 11 as the support member 12. The first mounting member 711 extends along the first direction Y so that the detection unit 72 has space to move freely in the first direction Y. The second mounting member 712 slides along the first direction Y and is rotatably connected to the first mounting member 711. For example, a first sliding hole is provided on the second mounting member 712 along the first direction Y. The first mounting member 711 passes through the first sliding hole so that the second mounting member 712 can slide and be rotatably connected to the first mounting member 711. The detection unit 72 is slidably connected to the second mounting member 712. For example, Figure 2 As shown, a second sliding hole is provided on the second mounting member 712 along the axial direction X. In some embodiments, the detection unit 72 includes a connecting shaft and a clamp, and the connecting shaft passes through the second sliding hole along its own axial direction X, so that the detection unit 72 can be slidably connected to the second mounting member 712. In some embodiments, the second mounting member 712 includes a cross connector. It should be noted that, in some embodiments, the detection unit 72 may not include a connecting shaft and a clamp, but is directly connected to the second mounting member 712. The detection unit 72 may be of various types, such as a sound level meter and a spectrum analyzer, etc., and the embodiments of the present application do not make specific restrictions here.

[0065] Setting the first mounting member 711 and the second mounting member 712 can realize the free movement of the detection unit 72 in any direction. By adjusting the distance between the detection unit 72 and the driving member 100, the noise value of the driving member 100 under different working conditions can be measured, so as to obtain more abundant and reliable test data for the experiment.

[0066] It should also be noted that, in some embodiments, in order to ensure the rigidity and strength of the measuring device, the material of the support base 1 is selected from 6061 aluminum alloy, which can ensure the dimensional accuracy of the parts after processing, and the service life of the parts can be guaranteed after surface oxidation and shot peening. The transmission shaft 2 is selected from 45 steel and chrome-plated to prevent rust and improve the surface properties of the material.

[0067] The measuring device provided in the embodiment of the present application can be used to measure the return difference of the driving member 100, and the specific steps include: recording the first position of the transmission shaft 2; configuring the motion component 3 to drive the transmission shaft 2 to rotate clockwise or counterclockwise around its own axis; reconfiguring the motion component 3 to drive the transmission shaft 2 to rotate in the opposite direction around its own axis; recording the second position of the transmission shaft 2; and calculating the angular difference of the transmission shaft 2 in the circumferential direction based on the first position and the second position.

[0068] Due to the return difference, after the transmission shaft 2 rotates forward and reverse twice, the transmission shaft 2 cannot return to the initial position (i.e., the first position), and the angle difference between the position of the transmission shaft 2 (i.e., the second position) and the initial position after the test is completed is the return difference.

[0069] In some embodiments, the measuring device used in the measuring method also includes a counterweight 31 and a traction member 32. The above step of "configuring the motion component 3 so that it drives the transmission shaft 2 to rotate clockwise or counterclockwise around its own axis" is specifically as follows: releasing the counterweight 31, causing the counterweight 31 to perform free fall motion along the first direction Y, and the traction member 32 to change from a wound state to a straight state; the above step of "reconfiguring the motion component 3 so that it drives the transmission shaft 2 to rotate in the opposite direction around its own axis" is specifically as follows: rewinding the traction member 32 to the outer peripheral side of the transmission shaft 2, and releasing the counterweight 31 in the opposite direction, causing the counterweight 31 to perform free fall motion along the first direction Y, and the traction member 32 to change from a wound state to a straight state.

[0070] In some embodiments, the measuring device used in the measuring method also includes an indicator 4 and a dial 5, and the above step of "recording the first position of the transmission shaft 2" is specifically recording the first position indicated by the indicator 4 on the dial 5; the above step of "recording the second position of the transmission shaft 2" is specifically recording the second position indicated by the indicator 4 on the dial 5; the above step of "calculating the circumferential angle difference of the transmission shaft 2 based on the first position and the second position" is specifically calculating the difference between the corresponding values ​​of the first position and the second position on the dial 5.

[0071] Exemplarily, the counterweight 31, the traction member 32 and the transmission shaft 2 are connected in sequence, and then the transmission shaft 2 and the driving member 100 are connected to the supporting pedestal 1 therewith. First, the first position indicated by the indicator 4 on the dial 5 is recorded, and then the counterweight 31 is released to make it free fall, and at the same time, the traction member 32 is turned from a wound state to a straight state, and then the traction member 32 is rewound to the outer peripheral side of the transmission shaft 2, and the counterweight 31 is released in the opposite direction to make it free fall, and at the same time, the traction member 32 is turned from a wound state to a straight state, and the second position indicated by the indicator 4 on the dial 5 is recorded, and the difference between the corresponding values ​​of the first position and the second position on the dial 5 is calculated.

[0072] By measuring the return difference, the assembly quality and gear accuracy of the test piece can be evaluated, which can not only improve the stable operation performance of the drive component 100 and reduce vibration and noise, but also help calibrate the equipment and tools used to measure other parameters to ensure the accuracy and reliability of the measurement results.

[0073] The measuring device provided in the embodiment of the present application can also be used to measure the pull-in torque of the driving member 100. The specific steps include: configuring the motion component 3 and starting the driving member 100; gradually increasing the input torque of the motion component 3 until the driving member 100 is stalled or out of step, and calculating the pull-in torque of the driving member 100.

[0074] In some embodiments, the measuring device used in the measuring method further includes a counterweight 31 and a traction member 32. The above step of "configuring the motion component 3" is specifically: according to the situation of the driving member 100, a counterweight 31 with a suitable weight is set, and the counterweight 31 is suspended on one side of the transmission shaft 2 through the traction member 32, and the traction member 32 is in a straight state. The above step of "gradually increasing the input torque of the motion component 3" is specifically to gradually increase the number or weight of the counterweight 31.

[0075] Exemplarily, the driving member 100 is first connected to a power source, and a counterweight 31 of appropriate weight is hung on one side of the transmission shaft 2, and the driving member 100 is started to observe whether the driving member 100 can drive the counterweight 31 to rise normally. The number or weight of the counterweight 31 is gradually increased under the condition of normal lifting without losing step, until the driving member 100 is blocked or loses step. The value of the pull-in torque can be calculated through the radius of the transmission shaft 2 and the mass of the counterweight 31, as well as the data graph of the driving frequency of the driving member 100 and the pull-in torque.

[0076] Similarly, the value of the pull-out torque may also be calculated by the above method, which will not be described in detail in the embodiment of the present application.

[0077] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A measuring device for measuring a driving member, wherein the driving member comprises an output shaft and a gear structure drivingly connected to the output shaft, characterized in that: The measuring device comprises: support pedestal; A transmission shaft, rotatably connected to the support base, the transmission shaft is used to connect to the output shaft and rotate synchronously; A motion component is connected to the transmission shaft, and the motion component is configured so that at least part of the structure in the motion component can move along a first direction to drive the transmission shaft to rotate around its own axis, and the first direction is perpendicular to the axis direction.

2. The measuring device according to claim 1, characterized in that The motion component includes a traction member and a counterweight member connected to the traction member, the traction member is wound around the axis and arranged outside the transmission shaft, and the motion component is configured so that when the counterweight member moves along the first direction, at least a portion of the structure in the traction member is transformed from a wound state to a straight state, and drives the transmission shaft to rotate.

3. The measuring device according to claim 2, characterized in that The motion component also includes a rotating member, which is connected to the transmission shaft and rotates synchronously. The traction member is wound around the outer peripheral side of the rotating member, and one end of the traction member is connected to the rotating member, and the other end is connected to the counterweight member.

4. The measuring device according to claim 1, characterized in that It also includes an indicator and a dial, one of which is fixed to the support base, and the other rotates synchronously with the transmission shaft; Wherein, the projection of the indicator in the direction of the axis is overlapped with the projection of the scale in the direction of the axis.

5. The measuring device according to claim 4, characterized in that It also includes a bearing seat, which is provided with a first connecting hole along the axial direction, and the transmission shaft passes through the first connecting hole and is rotatably connected to the bearing seat.

6. The measuring device according to claim 5, characterized in that The bearing seat includes a first part and a second part arranged along the axial direction, the support seat is provided with a second connecting hole along the axial direction, the second part partially passes through the second connecting hole, the second part is fixedly connected to the support seat, and the radial dimension of the first part is greater than the radial dimension of the second connecting hole.

7. The measuring device according to claim 6, characterized in that It also includes a fastener, which is sleeved on a portion of the outer circumference of the second part, and two surfaces of the fastener that are opposite to each other in the axial direction are respectively in contact with the first part and the support seat.

8. The measuring device according to claim 7, characterized in that The support pedestal includes a base and a support member located at one side of the base along the first direction. A plurality of the support members are provided, and the plurality of the support members are arranged at intervals along the axial direction. The second connecting hole is opened in the support member.

9. The measuring device according to claim 8, characterized in that It also includes a sound testing component, which includes a mounting component and a detection unit arranged on the support base, the mounting component is spaced apart from the transmission shaft along the axial direction, the detection unit is connected to the mounting component, and the mounting component is configured to be able to adjust the position of the detection unit.

10. The measuring device according to claim 9, characterized in that The mounting assembly includes a first mounting member and a second mounting member, the first mounting member is fixed to the base and is located on the same side of the base as the support member, the first mounting member extends along the first direction, the second mounting member slides along the first direction and is rotatably connected to the first mounting member, and the detection unit is slidably connected to the second mounting member.

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