Torque calibration device for transmission shaft of commercial vehicle

Abstract

The utility model discloses a commercial vehicle transmission shaft torque calibration device, which comprises a static torque rack and a transmission shaft, a force application end and a fixed end are arranged on the static torque rack, two ends of the transmission shaft are respectively connected with the force application end and the fixed end of the static torque rack, and the force application end of the static torque rack is configured to apply static torque to the transmission shaft; the torque measuring device is mounted on the transmission shaft; the torque calibration device is detachably mounted at the fixed end of the static torque rack and is connected with the other end of the transmission shaft; the data collector is in communication connection with the torque measuring device and the torque calibration device, and the data collector is configured to perform torque calibration on the torque measuring device according to the torque measured by the torque calibration device; the torque of the transmission shaft is directly measured through the detachable torque calibration device, torque calibration is carried out on the torque calibration device in combination with the data collector, disassembly and assembly are convenient, and flexibility, reliability and accuracy are high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile power transmission drive test, in particular to a commercial vehicle drive shaft torque calibration device. Background Art

[0002] As a key component in automotive power transmission, torque measurement of the driveshaft is crucial for ensuring the performance of the vehicle's drivetrain and ensuring safe and stable operation. Torque measurement involves the precise measurement of the actual torque generated by the driveshaft during operation using torque measurement equipment. This is used to verify that the drivetrain's performance in actual operation meets preset standards, enabling timely identification and resolution of potential issues and preventing failures and accidents caused by torque anomalies. Driveshaft torque calibration, a prerequisite for torque measurement, involves calibrating the torque measurement equipment. Calibration accuracy directly determines the reliability and validity of the torque test results from the driveshaft torque measurement equipment.

[0003] At present, in the process of commercial vehicle development, the torque calibration of its drive shaft is mainly based on a static torsion test bench, which has a built-in tension and pressure sensor. During calibration, the drive shaft is installed on the static torsion test bench, and the torque measuring equipment is calibrated by the tension and pressure sensor built into the static torsion test bench. However, the traditional static torsion test bench has the following shortcomings: on the one hand, the tension and pressure sensor is built into the static torsion test bench, and its measuring range is fixed. It is impossible to flexibly replace the tension and pressure sensor according to different calibration requirements, which limits the applicability and flexibility of the calibration work; on the other hand, when performing torque calibration, the tension and pressure sensor indirectly obtains the torque value by calculating the tension and rotation radius, rather than directly measuring the torque. This indirect measurement method not only leads to low calibration accuracy and difficulty in achieving actual calibration results, but also reduces work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a commercial vehicle drive shaft torque calibration device to solve the problems of inconvenience in replacing sensors for torque calibration of commercial vehicle drive shaft torque measuring equipment using a traditional static torsion test bench, low applicability and flexibility, low calibration accuracy, poor results, and low work efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A commercial vehicle drive shaft torque calibration device, comprising:

[0007] A static torsion rig and a transmission shaft, wherein the static torsion rig is provided with a force-applying end and a fixed end, and both ends of the transmission shaft are respectively connected to the force-applying end and the fixed end of the static torsion rig, and the force-applying end of the static torsion rig is configured to apply static torque to the transmission shaft;

[0008] a torque measuring device, wherein the torque measuring device is mounted on the transmission shaft;

[0009] A torque calibration device, which is detachably mounted on the fixed end of the static torsion test stand and connected to the other end of the transmission shaft, and is used to measure the torque applied to the transmission shaft;

[0010] A data collector is communicatively connected to the torque measuring device and the torque calibration device respectively, and is configured to perform torque calibration on the torque measuring device according to the torque measured by the torque calibration device.

[0011] According to the above technical means, by detachably installing a torque calibration device on the fixed end of the static torsion test bench, the torque exerted on the drive shaft can be directly measured, which is convenient for disassembly and replacement, and the appropriate torque calibration device can be selected according to different calibration requirements, which solves the limitation of the traditional built-in tension and pressure sensor with a fixed range that cannot be flexibly replaced, and enhances the applicability and flexibility of the calibration work; at the same time, the torque is directly measured by the torque calibration device, and the measurement data of the torque measuring device and the torque calibration device are collected and analyzed by the data collector to realize the torque calibration of the torque measuring device. This not only avoids the error caused by the traditional method of indirect calculation through tension, pressure and rotation radius, improves the calibration accuracy, ensures the reliability and accuracy of the measurement results, makes the calibration effect more in line with actual needs, but also reduces the time loss caused by indirect measurement and multiple debugging, is easy to operate, and improves work efficiency.

[0012] Furthermore, the force-applying end of the static torsion stand includes a driving device, which is connected to one end of the transmission shaft and is used to apply static torque to the transmission shaft.

[0013] According to the above technical means, static torque is applied by setting a driving device connected to one end of the transmission shaft at the force-applying end of the static torsion test stand. The operation of applying torque to the transmission shaft is more precise and controllable. The driving device can stably output torque according to preset parameters, avoiding the uneven and unstable torque application caused by manual operation or other uncontrollable factors, and providing a reliable basis for the precision and accuracy of torque calibration.

[0014] Furthermore, it also includes a controller, which is communicatively connected to the driving device and is used to control the driving device to apply static torque to the transmission shaft.

[0015] According to the above technical means, through the communication connection between the controller and the drive device, the static torque applied by the drive device, the application duration and other parameters can be accurately set and flexibly adjusted according to the known torque of the torque calibration device. This not only improves the convenience and accuracy of the torque application operation and reduces human operation errors, but also can quickly switch parameters according to the calibration requirements of different commercial vehicle drive shafts, thereby improving applicability, efficiency and reliability.

[0016] Furthermore, it also includes a first connecting member, which is installed on the driving device, and the driving device is detachably connected to one end of the transmission shaft through the first connecting member.

[0017] According to the above technical means, the drive device is detachably connected to one end of the drive shaft through the first connecting member, which improves flexibility, versatility and ease of assembly and disassembly. In actual application, for commercial vehicle drive shafts of different specifications and models, the connection between the drive device and the drive shaft can be quickly completed by simply replacing the appropriate first connecting member, shortening the calibration preparation time and reducing the equipment adaptation cost. At the same time, it facilitates the maintenance, inspection and component replacement of the device, ensuring the efficient and smooth progress of the calibration work.

[0018] Furthermore, it also includes a second connecting member, which is installed at the fixed end of the static torsion test bench, and the torque calibration device is detachably connected to the second connecting member.

[0019] According to the above technical means, the torque calibration device is detachably connected to the fixed end of the static torsion test bench through the second connecting member, which improves flexibility, versatility and ease of assembly and disassembly. In actual application, when different calibration requirements are met or the torque calibration device fails and needs to be upgraded, the torque calibration device can be quickly and conveniently replaced by disassembly, without the need for complicated disassembly or modification of the fixed end of the static torsion test bench, shortening the equipment adjustment and maintenance time, reducing maintenance costs, and having high flexibility, thereby improving the adaptability and accuracy of the calibration.

[0020] Furthermore, a third connecting member is included, and the torque calibration device is detachably connected to the other end of the transmission shaft through the third connecting member.

[0021] According to the above technical means, the torque calibration device is detachably connected to the other end of the drive shaft through a third connecting member, which further enhances the flexibility, versatility and ease of assembly and disassembly of the overall device. In actual application, for drive shafts of different specifications and models or when the torque calibration device needs to be replaced according to actual calibration requirements, the drive shaft or torque calibration device can be quickly and easily disassembled and assembled without the need for complex modifications to the drive shaft or torque calibration device, saving time and labor costs and facilitating maintenance and replacement.

[0022] Furthermore, the torque measuring device is a non-contact torque sensor.

[0023] According to the above technical means, a non-contact torque sensor is used as a torque measuring device, which measures the torque changes of the transmission shaft in real time without direct contact with the transmission shaft, and has the advantages of high precision, high sensitivity and long life.

[0024] Furthermore, the torque measuring device is a telemetry torque sensor.

[0025] According to the above technical means, a telemetric torque sensor is used as a torque measuring device, which has the advantage of being able to measure when the drive shaft is rotating, and can be directly mounted on the drive shaft to measure the drive shaft. It is easy to install and measure, and avoids the difficulties of traditional torque sensors in installation and signal transmission on the drive shaft. Among them, as those skilled in the art can understand, the working principle of the telemetric torque sensor is that when the telemetric torque sensor measures the torque of the drive shaft, it cannot directly obtain the torque value, but indirectly obtains the torque information by converting the torque into an electrical signal output by measuring physical quantities related to the torque.

[0026] Furthermore, the torque calibration device is a torque flange sensor.

[0027] According to the above technical means, the torque flange sensor is used as the torque calibration device, which can accurately and directly measure the torque applied to the drive shaft. It has the advantages of high precision, high reliability and stability, flexibility, easy installation, and a wide range of applications. The torque flange sensor can provide a known torque and perform torque calibration on the torque measuring device. It is simple to operate and has high accuracy, reliability and flexibility.

[0028] Furthermore, the driving device is a motor.

[0029] According to the above technical means, an electric motor is used as the driving device. The motor has the ability to accurately control the speed and torque, and can stably and evenly apply static torque to the drive shaft according to preset parameters, avoiding the torque fluctuation problem that may occur in traditional drive methods, improving the accuracy and stability of torque application, and providing a reliable basis for torque measurement and calibration. In addition, there are many types of motors, which facilitates flexible selection and adaptation according to the calibration requirements of different commercial vehicle drive shafts, and is low in cost.

[0030] Beneficial effects achieved by this utility model:

[0031] 1. The utility model can directly measure the torque exerted on the drive shaft by detachably installing a torque calibration device on the fixed end of the static torsion test stand. It is convenient for disassembly and replacement, and the appropriate torque calibration device can be selected according to different calibration requirements. It solves the limitation of the traditional built-in tension and pressure sensor with a fixed range that cannot be flexibly replaced, and enhances the applicability and flexibility of the calibration work.

[0032] 2. The utility model directly measures the torque through the torque calibration device, and combines the data acquisition device to collect and analyze the measurement data of the torque measuring device and the torque calibration device, so as to realize the torque calibration of the torque measuring device. It not only avoids the error caused by the traditional method of indirect calculation through tension, pressure and rotation radius, but also improves the calibration accuracy, ensures the reliability and accuracy of the measurement results, makes the calibration effect more in line with actual needs, and reduces the time loss caused by indirect measurement and multiple debugging, is easy to operate, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0034] Figure 2 This is a linear relationship diagram between the standard torque and the torque electrical signal value of the utility model.

[0035] Among them, 1-static torsion test bench; 2-transmission shaft; 3-torque measuring device; 4-torque calibration device; 5-data collector; 6-driving device; 7-controller; 8-first connecting member; 9-second connecting member; 10-third connecting member.

[0036] The accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0037] It should be noted that, unless there is a conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other. The detailed description in the specific embodiments should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0038] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0039] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0040] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0041] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0042] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0043] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0044] This embodiment relates to a commercial vehicle drive shaft torque calibration device, such as Figure 1 As shown, it includes: a static torsion test bench 1 and a transmission shaft 2, the static torsion test bench 1 is provided with a force-applying end and a fixed end, the two ends of the transmission shaft 2 are respectively connected to the force-applying end and the fixed end of the static torsion test bench 1, and the force-applying end of the static torsion test bench 1 is configured to be able to apply static torque to the transmission shaft 2; a torque measuring device 3, the torque measuring device 3 is installed on the transmission shaft 2; a torque calibration device 4, the torque calibration device 4 is detachably installed on the fixed end of the static torsion test bench 1 and connected to the other end of the transmission shaft 2, and is used to measure the torque applied to the transmission shaft 2; a data collector 5, the data collector 5 is communicatively connected to the torque measuring device 3 and the torque calibration device 4, respectively, and the data collector 5 is configured to be able to calibrate the torque of the torque measuring device 3 according to the torque measured by the torque calibration device 4.

[0045] This embodiment directly measures the torque exerted on the drive shaft 2 through a detachable torque calibration device 4, which is easy to replace and can select a suitable torque calibration device 4 according to different calibration requirements, and has high applicability and flexibility. At the same time, through the combination of the torque calibration device 4 and the data collector 5, the torque calibration of the torque measuring device 3 is realized, the calibration accuracy and effect are improved, the reliability and accuracy of the measurement results are guaranteed, the operation is convenient, and the work efficiency is improved. Specifically, in actual application, the torque measuring device 3 can be directly applied to the drive shaft 2 loaded on the vehicle, so as to directly measure the torque of the drive shaft 2 on the vehicle. Before the torque measuring device 3 actually measures the torque of the drive shaft 2 on the vehicle, it is necessary to perform torque calibration first to ensure the accuracy, precision and reliability of the measurement. Without changing the original structure of the vehicle, the torque calibration device 4 is used as the torque calibration reference to calibrate the torque measuring device 3. The calibrated torque measuring device 3 can be directly installed on the drive shaft 2 on the vehicle to perform torque measurement.

[0046] A non-contact torque sensor is used as the torque measuring device 3 to measure the torque changes of the transmission shaft 2 in real time. It can convert the torque received by the transmission shaft 2 into an electrical signal output, which has the advantages of high precision, high sensitivity, and long life. Furthermore, as a preferred implementation of this embodiment, the torque measuring device 3 is a telemetric torque sensor, which has the advantage of being able to measure when the transmission shaft 2 is rotating. Among them, as those skilled in the art can understand, the working principle of the telemetric torque sensor is that when measuring the torque of the transmission shaft 2, the telemetric torque sensor cannot directly obtain the torque value, but instead indirectly obtains the torque information by measuring physical quantities related to the torque, such as resistance, voltage, phase difference, electromagnetic induction, etc., to convert the torque into an electrical signal output.

[0047] During torque calibration, the torque measuring device 3 can measure the torque electrical signal of the transmission shaft 2, the torque calibration device 4 provides a known torque, the force-applying end of the static torsion test bench 1 applies a static torque to the transmission shaft 2, the torque calibration device 4 measures the known torque applied to the transmission shaft 2, and the torque measuring device 3 measures the torque electrical signal under the known torque state applied to the transmission shaft 2. The torque electrical signal and the known torque of the torque measuring device 3 and the torque calibration device 4 are respectively collected and analyzed by the data acquisition device 5 to obtain a linear relationship between the torque electrical signal, such as voltage, and the known torque, such as Figure 2 As shown, the torque measuring device 3 is calibrated, and during the calibration process, the torque calibration device 4 with different known torques can be quickly replaced according to actual needs.

[0048] Furthermore, as a preferred implementation of this embodiment, the torque calibration device 4 is a torque flange sensor; using the torque flange sensor as the torque calibration device 4 can accurately and directly measure the torque exerted on the drive shaft 2, and has the advantages of high precision, high reliability and stability, flexibility, easy installation, and a wide range of applications. The torque flange sensor can provide a known torque and perform torque calibration on the torque measuring device 3. It is simple to operate and has high accuracy, reliability and flexibility.

[0049] like Figure 1 As shown, in this embodiment, the force-applying end of the static torsion test bench 1 includes a driving device 6, which is connected to one end of the transmission shaft 2 and is used to apply a static torque to the transmission shaft 2; in this embodiment, the static torque is applied by providing a driving device 6 connected to one end of the transmission shaft 2 at the force-applying end of the static torsion test bench 1. The operation of applying torque to the transmission shaft 2 is more precise and controllable, and the driving device 6 can stably output torque according to preset parameters, avoiding the uneven and unstable torque application caused by manual operation or other uncontrollable factors, and providing a reliable basis for the precision and accuracy of torque calibration; specifically, during actual torque calibration, the driving device 6 applies a static torque to the transmission shaft 2, the torque calibration device 4 measures the known torque applied to the transmission shaft 2, and the torque measuring device 3 measures the torque electrical signal under the known torque state applied to the transmission shaft 2. The data collector 5 collects and analyzes the torque electrical signals and the known torque of the torque measuring device 3 and the torque calibration device 4 respectively, and obtains a linear relationship between the torque electrical signal such as voltage and the known torque, thereby performing torque calibration on the torque measuring device 3.

[0050] like Figure 1 As shown, in this embodiment, the driving device 6 is a motor; this embodiment uses a motor as the driving device 6, the motor has precise speed and torque control capabilities, and can stably and evenly apply static torque to the drive shaft 2 according to preset parameters, avoiding the torque fluctuation problem that may occur in traditional driving methods, improving the accuracy and stability of torque application, and providing a reliable basis for torque measurement and calibration. In addition, there are rich types of motors, which are convenient for flexible selection and adaptation according to the calibration requirements of different commercial vehicle drive shafts 2, and the cost is low.

[0051] like Figure 1As shown, in this embodiment, a controller 7 is further included, which is communicatively connected to the drive device 6. The controller 7 is used to control the drive device 6 to apply a static torque to the drive shaft 2. In this embodiment, the controller 7 is communicatively connected to the drive device 6, and can accurately set and flexibly adjust the size of the static torque applied by the drive device 6, the application duration and other parameters according to the known torque of the torque calibration device 4. This not only improves the convenience and accuracy of the torque application operation and reduces human operation errors, but also can quickly switch parameters according to the calibration requirements of different commercial vehicle drive shafts 2, thereby improving applicability, efficiency and reliability.

[0052] like Figure 1 As shown, in this embodiment, a first connecting member 8 is further included, and the first connecting member 8 is installed on the driving device 6, and the driving device 6 is detachably connected to one end of the transmission shaft 2 through the first connecting member 8; in this embodiment, the driving device 6 is detachably connected to one end of the transmission shaft 2 through the first connecting member 8, which improves flexibility, versatility and convenience of assembly and disassembly. In actual application, for commercial vehicle transmission shafts 2 of different specifications and models, it is only necessary to replace the adapted first connecting member 8 to quickly complete the connection between the driving device 6 and the transmission shaft 2, shortening the calibration preparation time, reducing the equipment adaptation cost, and facilitating the maintenance, inspection and component replacement of the device, thereby ensuring the efficient and smooth progress of the calibration work; wherein, the first connecting member 8 can be a flange.

[0053] like Figure 1 As shown, in this embodiment, a second connecting member 9 is further included, and the second connecting member 9 is installed at the fixed end of the static torsion test bench 1, and the torque calibration device 4 is detachably connected to the second connecting member 9; in this embodiment, the torque calibration device 4 is detachably connected to the fixed end of the static torsion test bench 1 through the second connecting member 9, which improves flexibility, versatility and convenience of disassembly and assembly. In actual application, according to different calibration requirements or when the torque calibration device 4 fails or needs to be upgraded, the torque calibration device 4 can be quickly and conveniently replaced by disassembly, without the need for complex disassembly or modification of the fixed end of the static torsion test bench 1, thereby shortening the equipment adjustment and maintenance time, reducing maintenance costs, having high flexibility, and improving the adaptability and accuracy of the calibration; wherein, the second connecting member 9 can be a flange.

[0054] like Figure 1As shown, in this embodiment, a third connecting member 10 is further included, and the torque calibration device 4 is detachably connected to the other end of the transmission shaft 2 through the third connecting member 10; the torque calibration device 4 in this embodiment is detachably connected to the other end of the transmission shaft 2 through the third connecting member 10, which further enhances the flexibility, versatility and ease of assembly and disassembly of the overall device. In actual application, for transmission shafts 2 of different specifications and models or when the torque calibration device 4 needs to be replaced according to actual calibration requirements, the transmission shaft 2 or the torque calibration device 4 can be quickly and easily disassembled and assembled without the need for complex modifications to the transmission shaft 2 or the torque calibration device 4, thereby saving time and labor costs and facilitating maintenance and replacement; wherein, the third connecting member 10 can be a flange.

[0055] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A commercial vehicle drive shaft torque calibration device, characterized in that: include: A static torsion frame (1) and a transmission shaft (2), wherein the static torsion frame (1) is provided with a force-applying end and a fixed end, and both ends of the transmission shaft (2) are respectively connected to the force-applying end and the fixed end of the static torsion frame (1), and the force-applying end of the static torsion frame (1) is configured to be able to apply static torque to the transmission shaft (2); a torque measuring device (3), the torque measuring device (3) being mounted on the transmission shaft (2); A torque calibration device (4), the torque calibration device (4) is detachably mounted on the fixed end of the static torsion stand (1) and connected to the other end of the transmission shaft (2), and is used to measure the torque applied to the transmission shaft (2); A data collector (5) is communicatively connected to the torque measuring device (3) and the torque calibration device (4), respectively, and the data collector (5) is configured to perform torque calibration on the torque measuring device (3) based on the torque measured by the torque calibration device (4).

2. A commercial vehicle drive shaft torque calibration device according to claim 1, characterized in that: The force-applying end of the static torsion stand (1) includes a driving device (6), and the driving device (6) is connected to one end of the transmission shaft (2) and is used to apply static torque to the transmission shaft (2).

3. The commercial vehicle drive shaft torque calibration device according to claim 2, characterized in that: It also includes a controller (7), the controller (7) being communicatively connected to the driving device (6), and the controller (7) being used to control the driving device (6) to apply a static torque to the transmission shaft (2).

4. The commercial vehicle drive shaft torque calibration device according to claim 2, characterized in that: It also includes a first connecting member (8), which is mounted on the driving device (6). The driving device (6) is detachably connected to one end of the transmission shaft (2) via the first connecting member (8).

5. The commercial vehicle drive shaft torque calibration device according to claim 1, characterized in that: It also includes a second connecting member (9), which is installed on the fixed end of the static torsion stand (1), and the torque calibration device (4) is detachably connected to the second connecting member (9).

6. The commercial vehicle drive shaft torque calibration device according to claim 1, characterized in that: It also includes a third connecting member (10), and the torque calibration device (4) is detachably connected to the other end of the transmission shaft (2) via the third connecting member (10).

7. The commercial vehicle drive shaft torque calibration device according to claim 1, characterized in that: The torque measuring device (3) is a non-contact torque sensor.

8. The commercial vehicle drive shaft torque calibration device according to claim 7, characterized in that: The torque measuring device (3) is a telemetry torque sensor.

9. The commercial vehicle drive shaft torque calibration device according to claim 1, characterized in that: The torque calibration device (4) is a torque flange sensor.

10. The commercial vehicle drive shaft torque calibration device according to claim 4, characterized in that: The driving device (6) is a motor.

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