Dynamic torque calibration test bench system

Abstract

This invention relates to a dynamic torque calibration test bench system. An electric motor drives a torsion support system and a hydraulic torque loading system, a standard sensor rotor, and a calibrated sensor rotor to rotate within it. The forces at both ends of the hydraulic cylinders are applied as torsional torques to the flanges on both sides of the standard torque sensor rotor and the calibrated torque sensor rotor, respectively, forming a torque load. An external hydraulic control system controls the filling and unloading of hydraulic cylinders in the hydraulic torque loading system via a distributor and distributor shaft system, applying a torque load to the torsion arm according to the set calibration signal. The standard torque sensor stator, the calibrated torque sensor stator, and the gyro stabilizer are all mounted on a sensor stator mounting bracket. Their output signals and the gyro stabilizer control signals are transmitted wirelessly to the controller to complete the speed measurement and signal output of the calibrated torque sensor.

Description

Technical Field

[0001] This invention relates to a dynamic torque calibration test bench system, which is used to synchronously calibrate the dynamic torque and speed parameters of a torque sensor in a rotating state, providing a platform for dynamic parameter calibration of the torque sensor in a rotating state. Background Technology

[0002] Dynamic measurement using torque sensors under rotational conditions is a special type of measurement, studying the synchronous measurement of torque and speed under dynamic operating conditions. With the development of modern information technology, measuring torque sensors under dynamic operating conditions has become the latest trend in international measurement technology, receiving widespread attention from the international scientific community. Currently, torque calibration mainly uses static calibration methods, but this method suffers from problems such as significant differences from the actual working conditions of torque sensors in practical applications and the lack of unified dynamic calibration standards, failing to meet the needs of dynamic torque measurement in industrial fields. For these reasons, current dynamic calibration methods for torque sensors still have significant shortcomings. Summary of the Invention

[0003] To further explore dynamic torque calibration methods and achieve more precise dynamic calibration of torque sensors, this invention provides a dynamic torque calibration test bench system capable of applying torque to a torque sensor under rotation and measuring the sensor under calibration using a comparison method. By converting the applied torque into the internal force of the torsion support system, the system avoids the control accuracy problems caused by power-consuming components and the excessive power of power-consuming components, thereby improving the accuracy of dynamic torque control.

[0004] The technical solution adopted by this invention to solve its technical problem is: a dynamic torque calibration test bench system, including a motor, a high-elasticity coupling, an oil distributor and an oil distributor shaft system, a torsion support system, a hydraulic torque loading system, a standard torque sensor, a torque sensor to be calibrated, a stator mounting bracket system, a bearing support system, and a stator power supply system. The motor drives the torsion support system and the hydraulic torque loading system, the standard sensor rotor, and the calibrated sensor rotor installed inside the torsion support system to rotate, thereby simulating the rotational speed under dynamic conditions. The forces at both ends of the hydraulic cylinder in the hydraulic torque loading system are applied in the form of torsional torque through the torsion support. Torque loads are formed on both sides of the rotor section of the standard torque sensor and both sides of the rotor section of the calibrated torque sensor. During operation at a certain speed, the external hydraulic control system controls the filling and unloading of oil in the hydraulic cylinder of the hydraulic torque loading system through the distributor and distributor shaft system, so as to apply torque load to the torsion arm according to the set calibration signal. The stator section of the standard torque sensor, the stator section of the calibrated torque sensor, and the gyro stabilizer are all mounted on the sensor stator mounting bracket of the stator mounting bracket system. Their output signals and the gyro stabilizer control signals are transmitted wirelessly to the controller to complete the speed measurement and signal output of the calibrated torque sensor.

[0005] Furthermore, the distributor and distributor shaft system consists of oil pipes, distributor, and distributor shaft containing oil passages. The distributor contains distributor shaft containing oil passages, and the oil passages of distributor shaft are connected to oil pipes on distributor. Through distributor, oil passages, and hydraulic cylinder, the non-rotating hydraulic oil pressure is converted into a rotating dynamic torque load.

[0006] Furthermore, the torsion support system consists of a torsion support disc and a torsion support support rod, with the torsion support support rod mounted on the torsion support disc.

[0007] Furthermore, the hydraulic torque loading system consists of a hydraulic cylinder, a torsion arm, a torsion shaft a, and a torsion shaft b. The torsion arm is mounted on the torsion shaft b, which is mounted on the center of the torsion support disk via a bearing, thus reducing torque error caused by friction. One end of the hydraulic cylinder is connected to the support rod of the torsion support, and the other end is connected to the torsion arm. The hydraulic cylinder is also connected to the end of the oil passage of the distribution shaft via an oil pipe, thus achieving hydraulic oil circuit connection.

[0008] Furthermore, the standard torque sensor rotor section and the calibrated torque sensor rotor section are connected in series between the torsion shaft a and the torsion shaft b; the torsion shaft b is mounted at the center of the torsion bracket disk b through a bearing, which can reduce the torque error caused by friction.

[0009] Furthermore, the stator mounting bracket system consists of a sensor stator mounting bracket, a gyroscope stabilizer, and a wireless signal transmission and controller. The gyroscope stabilizer and the wireless signal transmission and controller are both mounted on the sensor stator mounting bracket, and the gyroscope stabilizer is connected to the wireless signal transmission and controller. The stator mounting bracket system is mounted on the torsion shaft via bearings, ensuring that when the torsion bracket system, the hydraulic torque loading system, the standard torque sensor rotor, and the calibrated torque sensor rotor rotate under the drive of the electric motor, the stator mounting bracket system will not rotate with the shaft due to gravity.

[0010] Furthermore, a gyro stabilizer is installed on the sensor stator mounting bracket, which ensures that the stator mounting bracket system remains stable when the torsion bracket system, hydraulic torque loading system, standard torque sensor rotor, and calibrated torque sensor rotor rotate, thereby improving the torque sensor speed calibration accuracy.

[0011] Furthermore, the stator power supply system consists of a current collector ring and a carbon brush slip ring system. The external power supply is introduced into the support shaft through the current collector ring and connected to the carbon brush slip ring system on the torsion shaft a. The power is then introduced into the custom mounting bracket system, which is stationary relative to the rotating shaft, through the carbon brush slip ring to complete the power supply to the standard torque sensor, the calibrated torque sensor, the gyroscope stabilization system, the wireless signal transmission, and the controller, all mounted on the stator mounting bracket.

[0012] The beneficial effects of this invention are:

[0013] This invention converts static oil pressure into torque in a rotating state through an oil distribution shaft and a hydraulic torque loading system. The torque is then converted into internal force through a torsion bracket system, effectively solving the problem of controlling energy-consuming components in torque operation. Simultaneously, by installing a higher-precision standard torque sensor as a comparison benchmark, torque control accuracy is improved. By installing a gyro stabilization system on the stator mounting bracket system, the stability of the stator mounting bracket system during rotation of the torsion bracket system, hydraulic torque loading system, standard torque sensor rotor, and the rotor of the calibrated torque sensor is ensured, improving the speed calibration accuracy of the torque sensor. This provides a platform for dynamic parameter calibration of the torque sensor under rotational conditions. Attached Figure Description

[0014] Figure 1 This is a diagram showing the overall composition of the dynamic torque calibration test bench system;

[0015] Figure 2 This is a schematic diagram showing the top and cross-sectional views of the dynamic torque calibration test bench system;

[0016] Figure 3 This is a cross-sectional view (AA) of the dynamic torque calibration test bench system;

[0017] Figure 4This is a BB cross-sectional view of the dynamic torque calibration test bench system;

[0018] The meanings of the serial numbers in the attached diagram are explained below:

[0019] 1-Electric motor; 2-High-elasticity coupling; 3-Oil distributor; 4-Bearing; 5-Oil distributor shaft; 6-Hydraulic cylinder; 7-Torsion support disc; 8-Standard torque sensor; 9-Torsion sensor to be calibrated; 10-Carbon brush slip ring system; 11-Tail support shaft; 12-Collector ring; 13-Wireless signal transmission and controller; 14-Gyro stabilizer; 15-Sensor stator mounting bracket; 16-Standard torque sensor rotor; 17-Torsion sensor rotor to be calibrated; 18-Torsion sensor stator to be calibrated; 19-Standard torque sensor stator; 20-Torsion shaft a; 21-Torsion support rod; 22-Sensor stator mounting bracket bearing; 23-Oil pipe; 24-Oil passage; 25-Torsion shaft mounting bearing; 26-Torsion shaft b; 27-Torsion arm. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1 to 4 As shown, the dynamic torque calibration test bench system of the present invention includes a motor 1, a high-elasticity coupling 2, an oil distributor and oil distributor shaft system, a torsion support system, a hydraulic torque loading system, a standard torque sensor 8, a torque sensor to be calibrated 9, a stator mounting bracket system, a bearing support system, and a stator power supply system.

[0022] The electric motor 1 drives the torsion support system and the hydraulic torque loading system, the rotor of the standard torque sensor 8, and the rotor of the calibrated torque sensor 9 installed inside it to rotate, thus simulating the rotational speed under dynamic conditions. One end of the hydraulic cylinder 6 in the hydraulic torque loading system acts on the support rod 21 of the torsion support, and the other end acts on the torsion arm 27. These two forces act as torsional torques on both sides of the standard torque sensor rotor 16 and the flanges on both sides of the calibrated torque sensor rotor 17, respectively, forming a torque load. During operation at a certain speed, the external hydraulic control system controls the filling and unloading of oil in the hydraulic cylinder 6 of the hydraulic torque loading system through the distributor and distributor shaft system, thus applying a torque load to the torsion arm 27 according to the set calibration signal. The stator 19 of the standard torque sensor, the stator 18 of the calibrated torque sensor, and the gyro stabilizer 14 are all mounted on the sensor stator mounting bracket 15 of the stator mounting bracket system. Their output signals and the control signals of the gyro stabilizer 14 are transmitted wirelessly to the controller 13 to complete the speed measurement and signal output of the calibrated torque sensor 9.

[0023] The oil distributor and oil distribution shaft system consists of an oil pipe 23, an oil distributor 3, and an oil distribution shaft 5 containing an oil passage; the oil distributor 3 contains an oil distribution shaft 5 containing an oil passage, and the oil passage 24 of the oil distribution shaft 5 is connected to the oil pipe 23 on the oil distributor 3.

[0024] The torsion bracket system consists of a torsion bracket disc 7 and a torsion bracket support rod 21; the torsion bracket support rod 21 is mounted on the torsion bracket disc 7.

[0025] The hydraulic torque loading system consists of a hydraulic cylinder 6, a torsion arm 27, a torsion shaft a20, and a torsion shaft b26. The torsion arm 27 is mounted on the torsion shaft b26, which is mounted at the center of the torsion support disk via bearings, reducing torque errors caused by friction. One end of the hydraulic cylinder 6 is connected to the torsion support rod 21, and the other end is connected to the torsion arm 27. The hydraulic cylinder 6 is also connected to the end of the oil passage of the distribution shaft 3 via an oil pipe 23, thus connecting the hydraulic circuit. The standard torque sensor rotor 16 and the calibrated torque sensor rotor 17 are connected in series between the torsion shaft a and the torsion shaft b.

[0026] The stator mounting bracket system consists of a sensor stator mounting bracket 15, a gyroscope stabilizer 14, and a wireless signal transmission and controller 13. The gyroscope stabilizer 14 and the wireless signal transmission and controller 13 are both mounted on the sensor stator mounting bracket 15, and the gyroscope stabilizer 14 is connected to the wireless signal transmission and controller 13.

[0027] The stator power supply system consists of a current collector ring 12 and a carbon brush slip ring system 10. An external power supply is introduced into the support shaft through the current collector ring 12 and connected to the carbon brush slip ring system 10 at the torsion shaft a20. The power is introduced into a custom mounting bracket system that is stationary relative to the rotating shaft through the carbon brush slip ring, thus providing power to the standard torque sensor 8, the calibrated torque sensor 9, the gyroscope stabilizer 14, the wireless signal transmission, and the controller 13 mounted on the stator mounting bracket.

[0028] Explanation of the operating mechanism of this dynamic torque calibration test bench system:

[0029] (1) To control the operating speed of the motor drive system according to the torque sensor calibration experiment, the external hydraulic control system controls the filling and unloading of oil in the hydraulic cylinder of the hydraulic torque loading system through the distributor 3 and the distributor shaft system, thereby applying torque load to the torsion arm according to the set calibration signal. The stator mounting bracket system is mounted on the torsion shaft through bearings and will not rotate with the shaft. The external power supply introduces power into the support shaft through the slip ring and connects to the carbon brush slip ring system on the torsion shaft a. The power supply is introduced into the stator mounting bracket system, which is stationary relative to the rotating shaft, through the carbon brush slip ring, thereby supplying power to the standard torque sensor, the torque sensor being calibrated, the gyro stabilizer, the wireless signal transmission, and the controller mounted on the stator mounting bracket. The gyro stabilizer is installed on the stator mounting bracket to ensure that the stator mounting bracket system is in a stable state and improve the speed calibration accuracy of the torque sensor. The stator parts of the standard torque sensor and the stator parts of the torque sensor being calibrated are both mounted on the stator mounting bracket. Their output signals and the control signals of the gyro stabilizer are transmitted to the controller through wireless signal transmission to complete the speed measurement and signal output of the torque sensor.

[0030] (2) The external hydraulic control system controls the hydraulic cylinder of the hydraulic torque loading system to fill and unload oil through the distributor and distributor shaft system, and completes the application of torque load to the torsion arm according to the set calibration signal.

[0031] (3) The external power supply introduces the power into the support shaft through the current collector ring and connects to the carbon brush slip ring system on the torsion shaft a. The power is introduced into the custom mounting bracket system that is stationary relative to the rotating shaft through the carbon brush slip ring, so as to complete the power supply to the standard torque sensor, the calibrated torque sensor, the gyroscope stabilization system, the wireless signal transmission and the controller mounted on the stator mounting bracket.

[0032] (4) A gyroscope stabilizer is installed on the stator mounting bracket to ensure that the stator mounting bracket system is in a stable state when the torsion bracket system, hydraulic torque loading system, standard torque sensor rotor part, and calibrated torque sensor rotor part rotate, thereby improving the torque sensor speed calibration accuracy.

Claims

1. A dynamic torque calibration test bench system, characterized in that: The system includes an electric motor, a high-elasticity coupling, an oil distributor and oil distribution shaft system, a torsion bracket system, a hydraulic torque loading system, a standard torque sensor, a calibrated torque sensor, a stator mounting bracket system, a bearing support system, and a stator power supply system. The electric motor drives the torsion bracket system and the hydraulic torque loading system, the standard sensor rotor, and the calibrated sensor rotor installed inside the torsion bracket system to rotate, thus simulating the rotational speed under dynamic conditions. The forces at both ends of the hydraulic cylinder in the hydraulic torque loading system are applied to the flanges on both sides of the standard torque sensor rotor and the calibrated torque sensor rotor in the form of torsional torque through the torsion bracket, forming a torque load. During operation at a certain speed, the external hydraulic control system controls the filling and unloading of oil in the hydraulic cylinder in the hydraulic torque loading system through the oil distributor and oil distribution shaft system, thus applying a torque load to the torsion arm according to the set calibration signal. The standard torque sensor stator, the calibrated torque sensor stator, and the gyro stabilizer are all mounted on the sensor stator mounting bracket of the stator mounting bracket system. Their output signals and the gyro stabilizer control signals are transmitted wirelessly to the controller to complete the speed measurement and signal output of the calibrated torque sensor. The distributor and distributor shaft system consists of oil pipes, a distributor, and a distributor shaft containing oil passages. The distributor contains a distributor shaft with internal oil passages, and the oil passages of the distributor shaft connect to the oil pipes on the distributor. Through the distributor, oil passages, and hydraulic cylinder, the non-rotating hydraulic oil pressure is converted into a rotating dynamic torque load. The hydraulic torque loading system consists of a hydraulic cylinder, a torsion arm, torsion shaft a, and torsion shaft b. The torsion arm is mounted on torsion shaft b, which is mounted via bearings. The center of the torsion bracket disk reduces torque errors caused by friction. One end of the hydraulic cylinder is connected to the torsion bracket support rod, and the other end is connected to the torsion arm. The hydraulic cylinder is also connected to the end of the oil passage of the distribution shaft via an oil pipe, thus achieving hydraulic circuit connectivity. The stator mounting bracket system consists of a sensor stator mounting bracket, a gyro stabilizer, and a wireless signal transmission and controller. The gyro stabilizer and the wireless signal transmission and controller are both mounted on the sensor stator mounting bracket, and the gyro stabilizer is connected to the wireless signal transmission and controller. The stator mounting bracket system is mounted on the torsion shaft via bearings, ensuring that when the torsion bracket system, hydraulic torque loading system, standard torque sensor rotor, and calibrated torque sensor rotor rotate under the drive of the electric motor, the stator mounting bracket system will not rotate with the shaft due to gravity.

2. The dynamic torque calibration test bench system according to claim 1, characterized in that: The torsion support system consists of a torsion support disc and a torsion support support rod, with the support rod mounted on the torsion support disc.

3. The dynamic torque calibration test bench system according to claim 1, characterized in that: The standard torque sensor rotor section and the calibrated torque sensor rotor section are connected in series between torsion shaft a and torsion shaft b; torsion shaft b is mounted at the center of torsion bracket disk b through a bearing, which can reduce torque error caused by friction.

4. The dynamic torque calibration test bench system according to claim 1, characterized in that: A gyro stabilizer is installed on the sensor stator mounting bracket to ensure that the stator mounting bracket system remains stable when the torsion bracket system, hydraulic torque loading system, standard torque sensor rotor, and calibrated torque sensor rotor rotate, thereby improving the torque sensor speed calibration accuracy.

5. The dynamic torque calibration test bench system according to claim 1, characterized in that: The stator power supply system consists of a current collector ring and a carbon brush slip ring system. The external power supply is introduced into the support shaft through the current collector ring and connected to the carbon brush slip ring system on the torsion shaft a. The power is then introduced into the custom mounting bracket system, which is stationary relative to the rotating shaft, through the carbon brush slip ring to complete the power supply to the standard torque sensor, the calibrated torque sensor, the gyroscope stabilization system, the wireless signal transmission, and the controller, all of which are mounted on the stator mounting bracket.

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