Test device for torque sensors

Abstract

The application discloses a testing device for a torque sensor, comprising a base, a driving part and a first swing arm, wherein the base is provided with a testing part for arranging a torque sensor to be tested; the driving part is arranged on the base, and an output end of the driving part is in driving connection with the torque sensor to be tested; the first swing arm is connected to the torque sensor to be tested; under the driving of the driving part, the first swing arm and the torque sensor to be tested can move together. In this way, the deformation of the torque sensor to be tested can be equivalently amplified to the first swing arm connected thereto, and the deformation angle of the torque sensor to be tested can be obtained by calculating the ratio of the deformation height H1 of the first swing arm to the radius L1 of the first swing arm, so that convenient and accurate testing is realized.

Description

Technical Field

[0001] This application belongs to the field of sensor technology, and specifically relates to a testing device for a torque sensor. Background Technology

[0002] A torque sensor is a detection device that senses the torsional torque on various rotating or non-rotating mechanical parts, converting the physical change of torque into a precise electrical signal. After a certain period of use, the torque sensor needs to be tested and calibrated using a testing device to ensure the reliability of its sensing results. Utility Model Content

[0003] This application aims to provide a testing device for a torque sensor, which at least solves one of the problems in the prior art.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] According to a first aspect of this application, a testing apparatus for a torque sensor is provided, comprising:

[0006] A base having a testing section for mounting a torque sensor to be tested;

[0007] A drive unit is provided on the base, and the output end of the drive unit can be connected to the torque sensor to be measured.

[0008] A first swing arm, which is connected to the torque sensor to be measured;

[0009] Driven by the drive unit, the first swing arm and the torque sensor to be measured can move together.

[0010] Optionally, it also includes a drive shaft, the first end of which is connected to the output end of the drive unit, and the second end of which is connected to the torque sensor to be measured, and the second end is the end of the drive shaft that is opposite to the first end.

[0011] Optionally, the first swing arm extends axially along the drive shaft.

[0012] Optionally, a second swing arm is also included, which is connected to the torque sensor to be measured and is positioned opposite the first swing arm.

[0013] Optionally, it also includes a third swing arm, which is fixedly connected to the test unit and disposed on the same side as the first swing arm;

[0014] Driven by the drive unit, the first swing arm, the second swing arm, and the torque sensor to be measured can move together, so that there is a height difference between the third swing arm and the first swing arm.

[0015] Optionally, it also includes a measuring unit, which is disposed on the base and connected to the first swing arm and is capable of measuring the height difference between the first swing arm and the third swing arm.

[0016] Optionally, it also includes a dynamic measurement sensor, one end of which is connected to the output end of the drive unit, and the other end of which is connected to the torque sensor to be measured. The dynamic measurement sensor is used to detect the output torque of the drive unit.

[0017] Optionally, it also includes a fixing block, one end of which is connected to the dynamic measurement sensor, and the other end of which is connected to the torque sensor to be measured, and the first swing arm is connected to the fixing block.

[0018] Optionally, it also includes a coupling connected between the output end of the drive unit and the dynamic measurement sensor.

[0019] Optionally, it also includes a dial, which is disposed on the base and has the test section on the dial.

[0020] Optionally, the drive unit includes a motor and a first mounting base, the first mounting base being disposed on the base, the motor being disposed on the first mounting base, and the output end of the motor being used for transmission connection with the torque sensor to be measured.

[0021] In the embodiments of this application, by connecting the first swing arm to the torque sensor under test, the first swing arm and the torque sensor under test can move together under the drive of the drive unit. In this way, the deformation of the torque sensor under test can be equivalently magnified onto the connected first swing arm. By calculating the ratio of the deformation height H1 of the first swing arm to the radius L1 of the first swing arm, the deformation angle of the torque sensor under test can be obtained, thereby achieving convenient and accurate testing.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1This is a schematic diagram of the test device for the torque sensor provided in this application;

[0025] Figure 2 This is another structural schematic diagram of the testing device for the torque sensor provided in this application;

[0026] Figure 3 This is another structural schematic diagram of the testing device for the torque sensor provided in this application;

[0027] Figure 4 yes Figure 3 A schematic diagram of the included angle between the two swing arms.

[0028] Figure label:

[0029] 001. The torque sensor to be tested;

[0030] 1. Base; 2. Drive unit; 21. Motor; 22. First mounting base; 3. First swing arm; 4. Second swing arm; 5. Third swing arm; 6. Measuring unit; 61. Measuring gauge; 62. Second mounting base; 7. Dynamic measuring sensor; 8. Fixing block; 9. Coupling; 10. Dial. Detailed Implementation

[0031] Embodiments of this application will now be described in detail. Examples of these embodiments are illustrated 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 this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application are within the scope of protection of this application.

[0032] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.

[0034] In the description of this application, it should be noted that, unless otherwise expressly 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The following is combined with Figures 1 to 4 This application describes a testing apparatus for a torque sensor according to an embodiment of the present application. The testing apparatus can be used to perform fatigue testing on a torque sensor 001 under test for calibration purposes.

[0036] like Figures 1 to 4 As shown, this application provides a testing device for a torque sensor, comprising:

[0037] The base 1 has a testing section for setting the torque sensor 001 to be tested;

[0038] A drive unit 2 is provided on the base 1, and the output end of the drive unit 2 can be connected to the torque sensor 001 to be measured.

[0039] First swing arm 3, the first swing arm 3 is connected to the torque sensor 001 to be measured;

[0040] Driven by the drive unit 2, the first swing arm 3 and the torque sensor 001 to be measured can move together.

[0041] like Figure 1 As shown, the base 1 serves as the structural foundation of the testing device, supporting and mounting the drive unit 2, the first swing arm 3, and other structures. The base 1 has a testing section for convenient and reliable mounting of the torque sensor 001 to be tested, facilitating subsequent testing.

[0042] like Figure 1 As shown, the drive unit 2 may include a rotary motor and a first mounting base 22. The first mounting base 22 is disposed on the base 1, and the rotary motor is disposed on the first mounting base 22. The output end of the rotary motor is used to drive the torque sensor 001 to be measured, so that the torque sensor 001 to be measured can move under the drive of the rotary motor.

[0043] In another embodiment, the drive unit 2 may also include a combination of a linkage assembly and a weight, which can adjust the torque transmitted to the torque sensor 001 to be measured by changing the weight of the weight.

[0044] like Figure 1 , Figure 3 and Figure 4 As shown, the first swing arm 3 is connected to the torque sensor 001 to be tested, so that the first swing arm 3 and the torque sensor 001 can move together under the drive of the drive unit 2. In this way, the minute deformation motion of the torque sensor 001 can be equivalently amplified onto the connected first swing arm 3. By calculating the ratio of the deformation height H1 of the first swing arm 3 to its radius L1, the deformation angle of the torque sensor 001 can be obtained, thus achieving convenient and accurate testing for subsequent calibration. Furthermore, the testing device has a simple structure and low testing cost.

[0045] Optionally, it also includes a drive shaft, the first end of which is connected to the output end of the drive unit 2, and the second end of which is used to connect to the torque sensor 001 to be measured, and the second end is the end of the drive shaft that is opposite to the first end.

[0046] Specifically, the output end of the drive unit 2 can be connected to the torque sensor 001 to be measured by setting the drive shaft to form a power transmission path of drive unit 2-drive shaft-torque sensor 001 to be measured.

[0047] Optionally, the first swing arm 3 extends along the axial direction of the transmission shaft, which facilitates the measurement of the deformation height H1 and the radius L1 of the first swing arm 3, thereby obtaining the deformation angle of the torque sensor 001 to be measured.

[0048] Optionally, it also includes a second swing arm 4, which is connected to the torque sensor 001 to be measured and is positioned opposite to the first swing arm 3.

[0049] like Figure 1As shown, the second swing arm 4 and the first swing arm 3 are respectively connected to both sides of the torque sensor 001 to be tested, so as to balance the test device and avoid the additional torque generated by the bias of the test device. This ensures that only the driving force of the drive unit 2 acts on the torque sensor 001 to be tested, thereby improving the reliability of the test results.

[0050] Optionally, it also includes a third swing arm 5, which is fixedly connected to the test part and disposed on the same side as the first swing arm 3;

[0051] Driven by the drive unit 2, the first swing arm 3, the second swing arm 4 and the torque sensor 001 to be measured can move together, so that there is a height difference between the third swing arm 5 and the first swing arm 3.

[0052] like Figure 1 As shown, the third swing arm 5 is fixed to the testing unit, so that the third swing arm 5 can serve as the reference for the deformation movement of the first swing arm 3. Under the drive of the driving unit 2, the first swing arm 3, the second swing arm 4, and the torque sensor 001 to be tested can move together.

[0053] like Figure 4 As shown, the deformation of the torque sensor 001 under test can be equivalently magnified onto the connected first swing arm 3. By calculating the ratio of the deformation height difference H1 between the first swing arm 3 and the reference third swing arm 5 to the radius L1 of the first swing arm 3, the deformation angle of the torque sensor 001 under test can be obtained, thus achieving convenient and accurate testing. The third swing arm 5 can be placed horizontally to simplify the testing process.

[0054] In addition, the setting of the third swing arm 5 makes the deformation motion of the first swing arm 3 easy to observe, and facilitates the testers to judge and adjust the test conditions.

[0055] Optionally, it also includes a measuring unit 6, which is disposed on the base 1. The measuring unit 6 is connected to the first swing arm 3 and is capable of measuring the height difference between the first swing arm 3 and the third swing arm 5.

[0056] like Figure 1 As shown, the measuring unit 6 may include a measuring instrument 61 and a second mounting base 62. The second mounting base 62 is disposed on the base 1 and is used to install and support the measuring instrument 61. The measuring instrument 61 is connected to the first swing arm 3 and can measure the height difference between the first swing arm 3 and the third swing arm 5. The radius L1 of the first swing arm 3 is a known value, so that the deformation angle of the torque sensor 001 to be measured can be obtained quickly.

[0057] The position of the measuring instrument 61 on the second mounting base 62 can also be adjusted to meet different testing requirements.

[0058] Optionally, it also includes a dynamic measurement sensor 7, one end of which is connected to the output end of the drive unit 2, and the other end of which is connected to the torque sensor 001 to be measured. The dynamic measurement sensor 7 is used to detect the output torque of the drive unit 2.

[0059] like Figure 1 As shown, a dynamic measurement sensor 7 can also be set between the output end of the drive unit 2 and the torque sensor 001 to be measured. This allows the drive force of the drive unit 2 to be transmitted and measured through the dynamic measurement sensor 7, while the installation angle of the dynamic measurement sensor 7 can be adjusted to eliminate the angular deviation caused by the assembly of the test device. This ensures the reliability and accuracy of the drive force transmission and reduces interference.

[0060] Optionally, it also includes a fixing block 8, one end of which is connected to the dynamic measurement sensor 7, and the other end of which is used to connect to the torque sensor 001 to be measured, and the first swing arm 3 is connected to the fixing block 8.

[0061] like Figure 1 As shown, the fixed block 8 is connected between the dynamic measurement sensor 7 and the torque sensor 001 to be measured, so as to form a power transmission path of dynamic measurement sensor 7-fixed block 8-torque sensor 001 to be measured. The first swing arm 3 is connected to the outer periphery of the fixed block 8, so that the driving force transmitted by the dynamic measurement sensor 7 can drive the first swing arm 3 and the torque sensor 001 to be measured to move together through the fixed block 8.

[0062] The first swing arm 3 and the second swing arm 4 are respectively connected to the two sides of the outer periphery of the fixed block 8 to balance the test device and avoid the additional torque generated by the bias of the test device. This ensures that the force acting on the torque sensor 001 under test is only the driving force of the drive unit 2, thereby improving the reliability of the test results.

[0063] Optionally, it also includes a coupling 9, which is connected between the output end of the drive unit 2 and the dynamic measurement sensor 7.

[0064] like Figure 2 As shown, coupling 9 is connected between the output end of drive unit 2 and dynamic measurement sensor 7 to achieve reliable transmission of driving force. A rigid or flexible coupling can be selected according to testing requirements.

[0065] For example, when it is necessary to test the response speed of the torque sensor 001 to be tested, a rigid coupling can be selected. In this case, the driving force of the drive unit 2 can be quickly transmitted to the torque sensor 001 to be tested through the coupling 9 and the dynamic measurement sensor 7.

[0066] When long-term fatigue testing is required, a flexible coupling can be used. In this case, the driving force of the drive unit 2 can be gradually applied to the torque sensor 001 under test through the coupling 9 and the dynamic measurement sensor 7, without affecting the service life of the torque sensor 001 due to sudden changes in driving force. Moreover, the flexible coupling itself can also eliminate some of the effects of sudden changes in driving force through elastic deformation, thereby achieving smooth loading of driving force.

[0067] Optionally, it also includes a dial 10, which is disposed on the base 1 and has the test section on the dial 10.

[0068] like Figure 1 As shown, a test section can be formed on the dial 10, and the dial 10, the torque sensor 001 to be tested, the fixing block 8, the dynamic measurement sensor 7, and the drive unit 2 are concentrically mounted. Before testing, the output of the drive unit 2 can be adjusted to zero, at which point the measured value of the dynamic measurement sensor 7 is also zero. By adjusting the mounting angle of the dynamic measurement sensor 7, the measured value of the measuring instrument 61 is also made zero to perform initial position setting. Afterward, the torque sensor 001 to be tested is installed, and the output of the drive unit 2 is adjusted to a specific value so that the deformation of the torque sensor 001 to be tested can be equivalently magnified to the connected first swing arm 3. By calculating the ratio of the deformation height H1 of the first swing arm 3 to the radius L1 of the first swing arm 3, the deformation angle of the torque sensor 001 to be tested can be obtained, thereby achieving convenient and accurate testing.

[0069] Optionally, the drive unit 2 includes a motor 21 and a first mounting base 22. The first mounting base 22 is disposed on the base 1, the motor 21 is disposed on the first mounting base 22, and the output end of the motor 21 is used for transmission connection with the torque sensor 001 to be measured.

[0070] like Figure 1 As shown, motor 21 can be a joint motor. The output end of the joint motor is used to connect with the torque sensor 001 to be tested, so that the torque sensor 001 to be tested can move under the drive of the joint motor, that is, to achieve precise torque loading.

[0071] In another embodiment, the drive unit 2 may also include a combination of a linkage assembly and a weight, which can adjust the torque transmitted to the torque sensor 001 to be measured by changing the weight of the weight.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A testing device for a torque sensor, characterized in that, include: A base having a testing section for mounting a torque sensor to be tested; A drive unit is provided on the base, and the output end of the drive unit can be connected to the torque sensor to be measured. A first swing arm, which is connected to the torque sensor to be measured; Driven by the drive unit, the first swing arm and the torque sensor to be measured can move together.

2. The testing device for the torque sensor according to claim 1, characterized in that, It also includes a drive shaft, the first end of which is connected to the output end of the drive unit, and the second end of which is used to connect to the torque sensor to be measured, and the second end is the end of the drive shaft that is opposite to the first end.

3. The testing apparatus for the torque sensor according to claim 2, characterized in that, The first swing arm extends axially along the drive shaft.

4. The testing apparatus for the torque sensor according to claim 1, characterized in that, It also includes a second swing arm, which is connected to the torque sensor to be measured and is positioned opposite to the first swing arm.

5. The testing apparatus for the torque sensor according to claim 4, characterized in that, It also includes a third swing arm, which is fixedly connected to the test unit and is disposed on the same side as the first swing arm; Driven by the drive unit, the first swing arm, the second swing arm, and the torque sensor to be measured can move together, so that there is a height difference between the third swing arm and the first swing arm.

6. The testing apparatus for the torque sensor according to claim 5, characterized in that, It also includes a measuring unit, which is disposed on the base and is connected to the first swing arm and is capable of measuring the height difference between the first swing arm and the third swing arm.

7. The testing apparatus for the torque sensor according to claim 1, characterized in that, It also includes a dynamic measurement sensor, one end of which is connected to the output end of the drive unit, and the other end of which is connected to the torque sensor to be measured. The dynamic measurement sensor is used to detect the output torque of the drive unit.

8. The testing apparatus for the torque sensor according to claim 7, characterized in that, It also includes a fixing block, one end of which is connected to the dynamic measurement sensor, and the other end of which is connected to the torque sensor to be measured, and the first swing arm is connected to the fixing block.

9. The testing apparatus for the torque sensor according to claim 7, characterized in that, It also includes a coupling that connects the output end of the drive unit to the dynamic measurement sensor.

10. The testing apparatus for the torque sensor according to claim 7, characterized in that, It also includes a dial, which is disposed on the base and has the test section on the dial.

11. The testing apparatus for the torque sensor according to claim 1, characterized in that, The drive unit includes a motor and a first mounting base. The first mounting base is disposed on the base, and the motor is disposed on the first mounting base. The output end of the motor is used for transmission connection with the torque sensor to be measured.

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