Torque sensor calibration device

Abstract

This disclosure relates to the technical field of torque sensor calibration, and more particularly to a torque sensor calibration device comprising: a platform; an adjustment unit for mounting a torque sensor, the adjustment unit being used to adjust the position of the torque sensor and apply rotational force to the torque sensor; a lever arm for connecting to the torque sensor via a torque adapter; a force-applying structure for applying pressure to the lever arm to cause it to deflect; an angle encoder disposed on the lever arm for measuring the horizontal deflection angle of the lever arm during calibration; and a controller, which, when the force-applying structure is reset, controls the adjustment unit to rotate by an angle equal in magnitude but opposite in direction to the horizontal deflection angle, controls the force-applying structure to apply the same pressure to the lever arm, and calibrates the torque sensor based on the horizontal state of the lever arm. This eliminates the need for force weights, avoiding the safety risks associated with loading and unloading force weights, and improving the degree of automation.

Description

Technical Field

[0001] This disclosure relates to the technical field of torque sensor calibration, and more particularly to a torque sensor calibration device. Background Technology

[0002] Torque instruments are widely used in daily industrial production. For example, in the automotive industry, they are used extensively to tighten bolts on engine parts, chassis, and body to ensure the safe connection of critical components. In the aerospace field, they are used in aircraft assembly to tighten bolts on fuselage and wing components to ensure structural integrity and safety. Therefore, the calibration of torque sensors for torque instruments is particularly important.

[0003] In the existing technology, the calibration of torque sensors usually requires the application of force weights. However, after each application of force weights, the angle of the lever needs to be adjusted to keep the lever in a horizontal state. This process is cumbersome, and there are certain safety risks associated with applying and unapplying force weights, as well as it consumes a lot of manpower.

[0004] Therefore, it is necessary to propose a torque sensor calibration device to at least partially solve the problems existing in the prior art. Utility Model Content

[0005] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, this disclosure proposes a torque sensor calibration device.

[0007] In view of this, a torque sensor calibration device is provided according to an embodiment of the present disclosure, comprising:

[0008] platform;

[0009] An adjustment section is used to mount a torque sensor, and the adjustment section is used to adjust the position of the torque sensor and apply rotational force to the torque sensor;

[0010] A lever arm is used to connect to the aforementioned torque sensor via a torque adapter.

[0011] A force-applying structure is used to apply pressure to the aforementioned lever arm to cause the lever arm to deflect.

[0012] An angle encoder is installed on the lever arm mentioned above and is used to measure the horizontal deflection angle of the lever arm mentioned above during the calibration process.

[0013] When the force-applying structure is reset, the controller controls the adjustment unit to rotate at an angle that is the same as but opposite in direction to the horizontal deflection angle, and controls the force-applying structure to apply the same pressure to the lever arm. Based on the horizontal state of the lever arm, the controller calibrates the torque sensor.

[0014] In one feasible implementation, the torque sensor calibration device further includes:

[0015] Telescopic support;

[0016] A support rod is provided on the aforementioned lever arm, and the height of the support rod is adjusted by the aforementioned telescopic bracket.

[0017] In one feasible implementation, the torque sensor calibration device further includes:

[0018] An angle sensor is installed on the support rod to detect the tilt angle of the support rod.

[0019] When the aforementioned lever arm is installed, the lever arm is calibrated to be in a horizontal state using the aforementioned angle sensor.

[0020] In one feasible implementation, the adjustment unit includes:

[0021] A clamping mechanism for clamping the aforementioned torque sensor;

[0022] A speed reducer, wherein the clamping mechanism is connected to the speed reducer, and the rotating shaft of the motor of the speed reducer is used to apply rotational force to the torque sensor.

[0023] In one feasible implementation, the adjustment unit further includes:

[0024] A guide rail is provided on the platform, and the speed reducer is used to slide along the guide rail to drive the torque sensor to move toward or away from the force-applying structure.

[0025] In one feasible implementation, the clamping mechanism includes:

[0026] The upper and lower chucks clamp the torque sensor.

[0027] A moving mechanism, connected to the upper chuck, is used to adjust the distance between the upper chuck and the lower chuck.

[0028] In one feasible implementation, the above-mentioned force-applying structure includes:

[0029] Frame;

[0030] The drive unit is connected to the aforementioned frame.

[0031] A crossbeam is provided on the frame and connected to the drive unit, which is used to drive the crossbeam to move toward or away from the lever arm.

[0032] In one feasible implementation, the above-mentioned force-applying structure further includes:

[0033] A force gauge is installed on the side of the aforementioned crossbeam facing the aforementioned lever arm.

[0034] In one feasible implementation, the above-mentioned force-applying structure further includes:

[0035] Support rod;

[0036] A camera device is installed on the aforementioned support rod, and the aforementioned camera device is used to capture the display value of the aforementioned torque sensor.

[0037] In one feasible implementation, the controller evenly divides multiple calibration points according to the range ratio of the torque sensor, and calibrates the torque sensor at each calibration point.

[0038] Compared to existing technologies, this disclosure offers at least the following advantages: The torque sensor calibration device provided in this disclosure includes a platform, an adjustment unit, a lever arm, a force-applying structure, an angle encoder, and a controller. The adjustment unit is placed on the platform, and a torque sensor is mounted on it to adjust its position and apply rotational force. The lever arm is connected to the torque sensor via a torque adapter. The force-applying structure applies pressure to the lever arm to cause it to deflect. The angle encoder is mounted on the lever arm and measures the horizontal deflection angle of the lever arm during calibration. With this setup, before the calibration begins, the lever arm is unloaded and horizontal, the angle encoder reading is zero, and the torque sensor display is also zero. Then, the calibration begins. The controller controls the force-applying structure to apply a preset pressure to the lever arm, causing the torque sensor to deform and the lever arm to lose its horizontal position. The angle encoder detects the deflection angle of the lever arm. When the deflection angle exceeds a preset angle, it is recorded. The controller then controls the force-applying structure to stop applying pressure to the lever arm and controls the adjusting unit to rotate. The rotation angle of the adjusting unit is the same as the deflection angle but opposite in direction. After the adjusting unit reaches its optimal angle, the controller controls the force-applying structure to apply and maintain the preset pressure on the lever arm. The angle encoder detects the deflection angle of the lever arm at this point. If the angle value displayed by the angle encoder is within the preset range, the lever arm is considered to be in an optimal horizontal state, thus achieving torque sensor calibration. The entire calibration process does not require the use of force weights, reducing manual labor, avoiding safety risks associated with loading and unloading force weights, and improving reliability and automation. Attached Figure Description

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0040] Figure 1 This is a schematic structural diagram of a torque sensor calibration device according to an embodiment of the present disclosure;

[0041] Figure 2 This is a partially enlarged schematic diagram of a torque sensor calibration device according to an embodiment of the present disclosure.

[0042] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0043] 110 Platform, 120 Adjustment unit, 121 Clamping mechanism, 1211 Upper chuck, 1212 Lower chuck, 1213 Moving mechanism, 122 Reducer, 1221 Motor, 123 Guide rail, 130 Lever arm, 140 Force-applying structure, 141 Frame, 142 Drive unit, 143 Crossbeam, 144 Force gauge, 150 Angle encoder, 160 Telescopic bracket, 161 Support rod, 162 Angle sensor, 170 Support rod, 171 Camera equipment, 200 Torque sensor. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the present invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are only for describing exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0045] like Figure 1 and Figure 2 As shown, an embodiment of this disclosure provides a torque sensor calibration device, comprising: a platform 110; an adjustment unit 120 for mounting a torque sensor 200, the adjustment unit 120 being used to adjust the position of the torque sensor 200 and apply rotational force to the torque sensor 200; a lever arm 130 for connecting to the torque sensor 200 via a torque adapter; a force-applying structure 140 for applying pressure to the lever arm 130 to cause the lever arm 130 to deflect; an angle encoder 150 disposed on the lever arm 130 for measuring the horizontal deflection angle of the lever arm 130 during calibration; and a controller, when the force-applying structure 140 is reset, for controlling the adjustment unit 120 to rotate by an angle equal to the same magnitude but opposite in direction as the horizontal deflection angle, and controlling the force-applying structure 140 to apply the same magnitude of pressure to the lever arm 130, thereby calibrating the torque sensor 200 based on the horizontal state of the lever arm 130.

[0046] It is understood that the torque sensor calibration device provided in this embodiment includes a platform 110, an adjustment unit 120, a lever arm 130, a force-applying structure 140, an angle encoder 150, and a controller. The adjustment unit 120 is placed on the platform 110, and the torque sensor 200 is mounted on the adjustment unit 120 to adjust the position of the torque sensor 200 and apply rotational force to it. The lever arm 130 is connected to the torque sensor 200 via a torque adapter. The force-applying structure 140 applies pressure to the lever arm 130 to cause it to deflect. The angle encoder 150 is mounted on the lever arm 130 and measures the horizontal deflection angle of the lever arm 130 during calibration. With this setup, before the calibration operation begins, the lever arm 130 is unloaded and horizontal, the angle encoder 150 reads zero, and the torque sensor 200 displays zero. Then, the calibration operation begins. The controller controls the force application structure 140 to apply a preset pressure to the lever arm 130, causing the torque sensor 200 to deform and the lever arm 130 to lose its horizontal position. The angle encoder 150 detects the deflection angle of the lever arm 130. When the deflection angle exceeds a preset angle, it is recorded, and the controller then controls the force application structure 140 to apply a preset pressure. Mechanism 140 stops applying pressure to lever arm 130 and controls adjustment unit 120 to rotate. The rotation angle and deflection angle of adjustment unit 120 are the same in magnitude but opposite in direction. After adjustment unit 120 reaches its rotation position, force application mechanism 140 is controlled to apply and maintain preset pressure to lever arm 130 again. Angle encoder 150 detects the deflection angle of lever arm 130 at this time. When the angle value displayed by angle encoder 150 is within the preset range, lever arm 130 is considered to be in the optimal horizontal state, thereby calibrating torque sensor 200. The entire calibration operation does not require the use of force weights, reducing manual labor, avoiding safety risks caused by loading and unloading force weights, and improving reliability and automation.

[0047] Understandably, existing technology requires the use of force weights. During calibration, the lever arm 130 must first be connected to the torque sensor 200 via a square adapter. Then, the lever arm 130 is adjusted to a horizontal position before the force weight is applied. During this process, the torque sensor 200 experiences radial torque, causing sensor deformation that results in the lever arm 130 no longer being horizontal, but forming an angle with the horizontal line. This shortens the effective length of the lever arm 130. According to the torque calculation formula (torque equals force multiplied by the lever arm), with the force weight remaining constant, a smaller effective lever arm leads to a smaller torque, causing measurement errors and affecting the accuracy of the results. Furthermore, applying the force weight generates both radial and axial torque, which also affects the measurement results. As the radial torque increases, the axial torque also increases, impacting both the measurement results and the structure and performance of the torque sensor 200. Therefore, the torque sensor calibration device proposed in this application can solve the measurement errors caused by axial and radial rotation during the calibration process of the traditional torque sensor 200, and improve accuracy.

[0048] In some examples, such as Figure 1 and Figure 2 As shown, the torque sensor calibration device further includes: a telescopic bracket 160; and a support rod 161, which is disposed on the lever arm 130, and the height of the support rod 161 is adjusted by the telescopic bracket 160.

[0049] Understandably, the torque sensor calibration device also includes a telescopic bracket 160 and a support rod 161. The telescopic bracket 160 is height-adjustable. The support rod 161 is horizontally mounted on the lever arm 130 and is supported by the telescopic bracket 160. This configuration allows for easy and quick adjustment of the lever arm 130's horizontal position during installation; the height of the support rod 161 can be adjusted by extending the telescopic rod.

[0050] It should be noted that the telescopic rod can be equipped with a locking structure. After the lever arm 130 is adjusted to a horizontal position, the current height of the telescopic rod can be locked through the locking structure to improve stability.

[0051] In some examples, such as Figure 1 As shown, the torque sensor calibration device further includes an angle sensor 162, which is disposed on the support rod 161 and is used to detect the tilt angle of the support rod 161; wherein, when the lever arm 130 is installed, the angle sensor 162 is used to calibrate the lever arm 130 to be in a horizontal state.

[0052] Understandably, the torque sensor calibration device also includes an angle sensor 162. Specifically, the angle sensor 162 can be located at the support rod 161, and can detect the tilt angle of the support rod 161. With this configuration, during the installation of the lever arm 130, when adjusting the angle of the lever arm 130 by adjusting the extension length of the telescopic rod and thus the height of the support rod 161, the extension length of the telescopic rod can be further adjusted based on the tilt angle of the lever arm 130 detected by the angle sensor 162, until the reading of the angle sensor 162 is zero, confirming that the lever arm 130 is in a horizontal state, thereby ensuring the accuracy of subsequent calibration.

[0053] In some examples, such as Figure 1 and Figure 2 As shown, the adjustment unit 120 includes: a clamping mechanism 121 for clamping the torque sensor 200; and a speed reducer 122, wherein the clamping mechanism 121 is connected to the speed reducer 122, and the rotating shaft of the motor 1221 of the speed reducer 122 is used to apply rotational force to the torque sensor 200.

[0054] It is understood that the adjustment unit 120 may be equipped with a clamping mechanism 121 and a reducer 122. The torque sensor 200 can be clamped by the clamping mechanism 121, which is connected to the reducer 122. The reducer 122 is equipped with a motor 1221, which can apply rotational force to the torque sensor 200 through the rotation shaft of the motor 1221, thereby improving the degree of automation. For example, the motor 1221 may be a servo motor, and the center of the torque sensor 200 can be adjusted to coincide with the center of the rotation shaft of the motor 1221, thereby ensuring accuracy.

[0055] In some examples, such as Figure 1 and Figure 2 As shown, the adjustment unit 120 further includes a guide rail 123 disposed on the platform 110, and the reducer 122 is used to slide along the guide rail 123 to drive the torque sensor 200 to move toward or away from the force-applying structure 140.

[0056] It is understood that the adjustment unit 120 may also be provided with a guide rail 123. Specifically, the guide rail 123 is disposed on the platform 110, and the extension direction of the guide rail 123 is towards the force-applying structure 140. The reducer 122 can slide along the guide rail 123, thereby driving the torque sensor 200 to move closer to or away from the force-applying structure 140. With this configuration, after the lever arm 130 is installed, the reducer 122 can slide along the guide rail 123 to adjust the end of the lever arm 130 to the working position of the force-applying structure 140. This ensures that the lever arm 130 will not interfere with the force-applying structure 140 during installation.

[0057] In some examples, such as Figure 1 and Figure 2 As shown, the clamping mechanism 121 includes: an upper clamp 1211 and a lower clamp 1212, which clamp the torque sensor 200; and a moving mechanism 1213 connected to the upper clamp 1211 for adjusting the distance between the upper clamp 1211 and the lower clamp 1212.

[0058] It is understood that the clamping mechanism 121 may be provided with an upper clamp 1211, a lower clamp 1212, and a moving mechanism 1213. The upper clamp 1211 and the lower clamp 1212 are arranged opposite to each other to clamp the upper and lower surfaces of the torque sensor 200. The distance between the upper clamp 1211 and the lower clamp 1212 can be adjusted by the moving mechanism 1213 to ensure that the torque sensor 200 is clamped and to allow the center of the torque sensor 200 to coincide with the center of the rotating shaft of the motor 1221. For example, the moving mechanism 1213 may be a lead screw connected to the upper clamp 1211, and the position of the upper clamp 1211 can be adjusted by rotating the lead screw.

[0059] In some examples, such as Figure 1 and Figure 2 As shown, the force-adding structure 140 includes: a frame 141; a drive unit 142 connected to the frame 141; and a crossbeam 143 disposed on the frame 141 and connected to the drive unit 142. The drive unit 142 is used to drive the crossbeam 143 to move toward or away from the lever arm 130.

[0060] Understandably, the force-applying structure 140 may include a frame 141, a drive unit 142, and a crossbeam 143. The drive unit 142 is connected to the frame 141 and located below it. The crossbeam 143 is located on the frame 141 and connected to the drive unit 142, thereby driving the crossbeam 143 to move closer to or further away from the lever arm 130 via the drive unit 142. When the crossbeam 143 presses against the lever arm 130, pressure can be applied to the lever arm 130, causing it to become unbalanced. The drive unit 142 may be a servo motor to ensure precise pressure application and achieve the preset pressure.

[0061] In some examples, such as Figure 1 As shown, the force-applying structure 140 further includes a force gauge 144, which is disposed on the side of the crossbeam 143 facing the lever arm 130.

[0062] Understandably, the force-applying structure 140 may also be equipped with a force gauge 144. Specifically, the force gauge 144 may be positioned on the side of the crossbeam 143 facing the lever arm 130, so that when the crossbeam 143 presses against the lever arm 130, the force gauge 144 can detect the pressure value applied by the crossbeam 143 to the lever arm 130. For example, a 0.1-grade standard force gauge 144 may be selected. After the lever arm 130 is installed, the reducer 122 may slide along the guide rail 123 to adjust the end of the lever arm 130 directly below the force gauge 144.

[0063] In some examples, such as Figure 1 and Figure 2 As shown, the force-applying structure 140 further includes: a support rod 170; and a camera device 171 disposed on the support rod 170, the camera device 171 being used to capture the display value of the torque sensor 200.

[0064] Understandably, the force-applying structure 140 may also be equipped with a support rod 170 and a camera device 171. The camera device 171 can be supported by the support rod 170, and the camera device 171 can capture the displayed value of the torque sensor 200. The camera device 171 can also send the displayed value to the controller so that the controller can analyze and compare it with a standard torque value.

[0065] In some examples, the controller divides multiple calibration points evenly according to the range of the torque sensor 200, and calibrates the torque sensor 200 at each calibration point.

[0066] Understandably, the controller can evenly divide the range of the torque sensor 200 into multiple calibration points, and calibrate the torque sensor 200 at each calibration point to ensure calibration reliability.

[0067] For example, the torque sensor 200 can be divided into 5 calibration points, which are 20%, 40%, 60%, 80% and 100% of the full scale of the torque sensor 200. Taking a torque sensor 200 with a full-scale range of 1000 Nm as an example, a standard lever arm 130 with a length of 1 m is selected. When calibrating the first 200 Nm point, the lever arm 130 is installed first. With no force applied, the lever arm 130 is in a horizontal state, the angle encoder 150 reads zero, and the torque sensor 200 display value is set to zero. Then, the calibration operation begins. The controller controls the beam 143 of the force-applying structure 140 to apply a preset pressure of 200 N to the lever arm 130, causing the torque sensor 200 to deform under pressure. The lever arm 130 loses its horizontal state, and the angle encoder 150 detects the deflection angle of the lever arm 130. When the deflection angle is greater than the preset angle, it is recorded. Then, the controller controls the beam 143 of the force-applying structure 140 to move upwards, stopping the pressure applied to the lever arm 130, and controls the servo motor of the reducer 122 to rotate, with the rotation angle equal to... With the deflection angles being the same in magnitude but opposite in direction, after the angle of the adjusting part 120 is rotated to the correct position, the servo motor of the reducer 122 stops rotating, controlling the crossbeam 143 of the force-applying structure 140 to move downwards and maintain a preset pressure of 200N. The angle encoder 150 detects the deflection angle of the lever arm 130 at this time. When the angle value displayed by the angle encoder 150 is within the preset range, it can be determined that the lever arm 130 is in the optimal horizontal state. The standard torque value at this time is 200Nm. At this time, the controller camera device 171 starts working, takes a picture, and the controller analyzes and saves the displayed value of the torque sensor 200 being tested. The first calibration point ends, and the controller automatically switches to the next calibration point. This process is repeated to complete the testing of all calibration points. After the calibration data is saved, the crossbeam 143 of the force-applying structure 140 returns to the initial position, and the automatic torque calibration of the torque sensor 200 is completed.

[0068] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0069] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0070] It should be understood that in the description of this utility model, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0071] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" 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 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 utility model based on the specific circumstances.

[0072] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0073] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0074] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

[0075] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Claims

1. A torque sensor calibration device, characterized in that, include: platform; An adjustment section is provided for mounting a torque sensor, the adjustment section being used to adjust the position of the torque sensor and apply rotational force to the torque sensor; A lever arm is used to connect to the torque sensor via a torque adapter; A force-applying structure is used to apply pressure to the lever arm to cause the lever arm to deflect. An angle encoder is installed on the lever arm and is used to measure the horizontal deflection angle of the lever arm during the calibration process. The controller, when the force-applying structure is reset, controls the adjustment unit to rotate at an angle that is the same in magnitude but opposite in direction to the horizontal deflection angle, and controls the force-applying structure to apply the same pressure to the lever arm, and calibrates the torque sensor based on the horizontal state of the lever arm.

2. The torque sensor calibration device according to claim 1, characterized in that, Also includes: Telescopic support; A support rod is provided on the lever arm, and the height of the support rod is adjusted by the telescopic bracket.

3. The torque sensor calibration device according to claim 2, characterized in that, Also includes: An angle sensor is installed on the support rod to detect the tilt angle of the support rod; Specifically, when the lever arm is installed, the lever arm is calibrated to be in a horizontal state by the angle sensor.

4. The torque sensor calibration device according to claim 1, characterized in that, The adjustment unit includes: A clamping mechanism for clamping the torque sensor; A speed reducer, wherein the clamping mechanism is connected to the speed reducer, and the rotating shaft of the motor of the speed reducer is used to apply rotational force to the torque sensor.

5. The torque sensor calibration device according to claim 4, characterized in that, The adjustment unit further includes: A guide rail is provided on the platform, and the reducer is used to slide along the guide rail to drive the torque sensor to move towards or away from the force-applying structure.

6. The torque sensor calibration device according to claim 4, characterized in that, The clamping mechanism includes: The upper chuck and the lower chuck hold the torque sensor. A moving mechanism, connected to the upper chuck, is used to adjust the distance between the upper chuck and the lower chuck.

7. The torque sensor calibration device according to claim 1, characterized in that, The force-adding structure includes: Frame; The drive unit is connected to the frame. A crossbeam is disposed on the frame and connected to the drive unit, which is used to drive the crossbeam to move toward or away from the lever arm.

8. The torque sensor calibration device according to claim 7, characterized in that, The force-adding structure also includes: A force gauge is mounted on the side of the crossbeam facing the lever arm.

9. The torque sensor calibration device according to claim 1, characterized in that, The force-adding structure also includes: Support rod; A camera device is installed on the support rod, and the camera device is used to capture the display value of the torque sensor.

10. The torque sensor calibration device according to claim 1, characterized in that, The controller divides the torque sensor into multiple calibration points at equal intervals according to the range ratio of the torque sensor, and calibrates the torque sensor at each calibration point.

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