Dynamic torque calibration experiment bench system

Abstract

The invention relates to a dynamic torque calibration experiment bench system. A motor drives a torsion bracket system, and a hydraulic torque loading system, a standard sensor rotor and a calibrated sensor rotor which are arranged in the torsion bracket system to rotate; acting forces at two ends of the hydraulic cylinder respectively act on two sides of the standard torque sensor rotor part and flanges at two sides of the calibrated torque sensor rotor part through the torsion bracket in a torsion moment form to form a torque load; an external hydraulic control system controls oil charging and discharging in a hydraulic oil cylinder in the hydraulic torque loading system through an oil distributor and an oil distribution shaft system, so as to apply a torque load to a torsion force arm according to a set calibration signal; the standard torque sensor stator, the calibrated torque sensor stator and the gyro stabilizer are all installed on the sensor stator installation support, and output signals of the standard torque sensor stator, the calibrated torque sensor stator and the gyro stabilizer control signals of the standard torque sensor stator and the calibrated torque sensor stator and the gyro stabilizer complete rotating speed measurement and signal output of the calibrated torque sensor through the wireless signal transmission and control device.

Description

Technical Field

[0001] The invention relates to a dynamic torque calibration experimental bench system, which is used for synchronously calibrating dynamic torque and rotation speed parameters of a torque sensor in a rotating state, and provides a platform for dynamic parameter calibration of the torque sensor in a rotating state. Background Art

[0002] The dynamic measurement of torque sensors in a rotating state is a special measurement, which studies the synchronous measurement of torque and speed of sensors under dynamic conditions. With the development of modern information technology, the measurement of torque sensors under dynamic conditions has become the latest trend in the development of international measurement technology and has received widespread attention from the international scientific and technological community. At present, torque calibration mainly uses static calibration methods, but this method is quite different from the actual working conditions of torque sensors in practical applications, and there is no unified dynamic calibration specification, which cannot meet the needs of the industrial field for dynamic torque measurement. Based on the above reasons, the current dynamic calibration method for torque sensors still has major defects. Summary of the invention

[0003] In order to conduct a more in-depth study on the dynamic torque calibration method and more accurately calibrate the torque sensor dynamically, the present invention provides a dynamic torque calibration test bench system that can load the torque sensor with torque in a rotating state and measure the calibrated sensor by a comparison method. By converting the loaded torque into the internal force of the torsion support system, the control accuracy problems caused by the use of power-consuming elements and the problem of excessive power of the power-consuming elements are avoided, thereby improving the torque dynamic control accuracy.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a dynamic torque calibration test bench system, including an electric motor, a high-elastic coupling, an oil distributor and an oil distributor 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 installed inside the torsion bracket system, the rotor part of the standard sensor, and the rotor part of the calibrated sensor to rotate, thereby completing the simulation of the rotation speed under the dynamic state; the forces at both ends of the hydraulic cylinder in the hydraulic torque loading system act in the form of torsion torque through the torsion bracket respectively. Torque loads are formed on flanges on both sides of the rotor part of the standard torque sensor and the rotor part 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 in the hydraulic torque loading system through the oil distributor and the oil distribution shaft system, and completes the application of torque loads to the torsion arm according to the set calibration signal; the stator part of the standard torque sensor, the stator part of the calibrated torque sensor and the gyro stabilizer are all installed on the sensor stator mounting bracket of the stator mounting bracket system, and the output signal and the gyro stabilizer control signal are transmitted to the controller through wireless signals to complete the speed measurement and signal output of the calibrated torque sensor.

[0005] Furthermore, the oil distributor and oil distribution shaft system consists of an oil pipe, an oil distributor and an oil distribution shaft containing an oil channel. The oil distributor is equipped with an oil distribution shaft containing an oil channel. The oil channel of the oil distribution shaft is connected to the oil pipe on the oil distributor. The non-rotating hydraulic oil pressure is converted into a rotating dynamic torque load through the oil distributor, the oil channel and the hydraulic cylinder.

[0006] Furthermore, the torsion support system is composed of a torsion support disc and a torsion support support rod, and the torsion support support rod is installed on the torsion support disc.

[0007] Furthermore, the hydraulic torque loading system consists of a hydraulic cylinder, a torsion lever arm, a torsion shaft a and a torsion shaft b. The torsion lever arm is installed on the torsion shaft b, and the torsion shaft b is installed at the center of the torsion bracket disc through a bearing, which can reduce the torque error 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 lever arm, and the hydraulic cylinder is connected to the end of the oil channel of the oil distribution shaft through an oil pipe to realize the hydraulic oil circuit connection.

[0008] Furthermore, the rotor part of the standard torque sensor and the rotor part of the calibrated torque sensor are installed in series between the torsion shaft a and the torsion shaft b; the torsion shaft b is installed 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 is composed of a sensor stator mounting bracket, a gyro stabilizer, and a wireless signal transmission and controller; the gyro stabilizer, the wireless signal transmission and controller are all installed 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 installed on the torsion shaft through a bearing to ensure that when the torsion bracket system, the hydraulic torque loading system, the standard torque sensor rotor part, and the calibrated torque sensor rotor part rotate under the drive of the 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 can ensure that the stator mounting bracket system is in a stable state when the torsion bracket system, the hydraulic torque loading system, the standard torque sensor rotor part, the calibrated torque sensor rotor part, etc. are rotating, thereby improving the torque sensor speed calibration accuracy.

[0011] Furthermore, the stator power supply system consists of a collector ring and a carbon brush slip ring system. The external power supply introduces the power into the support shaft through the collector ring, and connects to the carbon brush slip ring system on the torsion shaft a. The customized mounting bracket system that is stationary relative to the rotating shaft is introduced through the carbon brush slip ring to complete the power supply for the standard torque sensor, the calibrated torque sensor and the gyro stabilization system, the wireless signal transmission and the controller installed on the stator mounting bracket.

[0012] The beneficial effects of the present invention are:

[0013] The present invention realizes the conversion of static oil pressure into torque in a rotating state through an oil distribution shaft and a hydraulic torque loading system, and effectively solves the control problem of energy-consuming components of torque force by converting torque into internal force through a torsion bracket system. At the same time, by installing a standard torque sensor with a higher level of accuracy as a comparison benchmark, the torque control accuracy is improved. By installing a gyroscopic stabilization system on the stator mounting bracket system, the stator mounting bracket system is in a stable state when the torsion bracket system, the hydraulic torque loading system, the rotor part of the standard torque sensor, the rotor part of the calibrated torque sensor, etc. are rotating, thereby improving the torque sensor speed calibration accuracy. Provide a platform for dynamic parameter calibration of the torque sensor in a rotating state. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0016] Figure 3 It is the AA section view of the dynamic torque calibration test bench system;

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

[0018] The meanings of the serial numbers in the accompanying drawings are explained as follows:

[0019] 1-motor; 2-high elastic coupling; 3-oil distributor; 4-bearing; 5-oil distributor shaft; 6-hydraulic cylinder; 7-torsion bracket disc; 8-standard torque sensor; 9-calibrated torque sensor; 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-calibrated torque sensor rotor; 18-calibrated torque sensor stator; 19-standard torque sensor stator; 20-torsion shaft a; 21-torsion bracket support rod; 22-sensor stator mounting bracket bearing; 23-oil pipe; 24-oil channel; 25-torsion shaft mounting bearing; 26-torsion shaft b; 27-torsion force arm. DETAILED DESCRIPTION

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

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

[0022] The motor 1 drives the torsion support system and the hydraulic torque loading system, the rotor part of the standard torque sensor 8, and the rotor part of the calibrated torque sensor 9 installed therein to rotate, completing the simulation of the speed under the dynamic state. One end of the hydraulic cylinder 6 in the hydraulic torque loading system acts on the torsion support support rod 21, and the other end acts on the torsion arm 27. The two forces act on the flanges on both sides of the standard torque sensor rotor 16 and the calibrated torque sensor rotor 17 in the form of torsion torque through the torsion support, forming a torque load. During the operation at a certain speed, the external hydraulic control system controls the filling and unloading of oil in the hydraulic cylinder 6 in the hydraulic torque loading system through the oil distributor and the oil distribution shaft system, and completes the application of torque load to the torsion arm 27 according to the set calibration signal; the stator 19 part of the standard torque sensor, the stator 18 part of the calibrated torque sensor, and the gyro stabilizer 14 are all installed on the sensor stator mounting bracket 15 of the stator mounting bracket system, and the output signal and the gyro stabilizer 14 control signal are transmitted to the controller 13 through wireless signals 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 is equipped with 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 support system is composed of a torsion support disc 7 and a torsion support support rod 21 ; the torsion support support rod 21 is installed on the torsion support 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. The torsion shaft b26 is mounted at the center of the torsion bracket disc through a bearing, which can reduce the torque error caused by friction. One end of the hydraulic cylinder 6 is connected to the torsion bracket support rod 21, and the other end is connected to the torsion arm 27. The hydraulic cylinder 6 is connected to the end of the oil channel of the oil distribution shaft 3 through an oil pipe 23 to achieve hydraulic oil circuit connection. The standard torque sensor rotor 16 and the calibrated torque sensor rotor 17 are installed in series between the torsion shaft a and the torsion shaft b.

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

[0027] The stator power supply system consists of a collector ring 12 and a carbon brush slip ring system 10. The external power supply introduces the power into the support shaft through the collector ring 12, and connects to the carbon brush slip ring system 10 at the torsion shaft a20. The carbon brush slip ring introduces a customized mounting bracket system that is stationary relative to the rotating shaft to complete the power supply to the standard torque sensor 8, the calibrated torque sensor 9 and the gyro stabilizer 14, the wireless signal transmission and the controller 13 installed on the stator mounting bracket.

[0028] The operating mechanism of this dynamic torque calibration test bench system is as follows:

[0029] (1) According to the requirements of the torque sensor calibration experiment, the motor drive system is controlled to operate at a speed that is controlled by the external hydraulic control system. The hydraulic oil cylinder of the hydraulic torque loading system is filled and unloaded through the oil distributor 3 and the oil distribution shaft system, so as to apply a torque load to the torsion arm according to the set calibration signal. The stator mounting bracket system is installed on the torsion shaft through a bearing and does not rotate with the shaft. The external power supply introduces the power supply into the support shaft through a collector ring, and connects the carbon brush slip ring system to the torsion shaft a. The carbon brush slip ring introduces the stator mounting bracket system that is stationary relative to the rotating shaft to complete the power supply to the standard torque sensor, the calibrated torque sensor, the gyro stabilizer, the wireless signal transmission and the controller installed on the stator mounting bracket. The stator mounting bracket is equipped with a gyro stabilizer to ensure that the stator mounting bracket system is in a stable state and improve the torque sensor speed calibration accuracy. The stator part of the standard torque sensor and the stator part of the calibrated torque sensor are both installed on the stator mounting bracket. The output signal and the gyro stabilizer control signal are transmitted to the controller through wireless signals to complete the torque sensor speed measurement and signal output.

[0030] (2) The external hydraulic control system controls the filling and unloading of oil in the hydraulic cylinder of the hydraulic torque loading system through the oil distributor and the oil distribution shaft system, thereby applying a 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 collector ring, and connects the carbon brush slip ring system to the torsion shaft a. The carbon brush slip ring introduces the customized mounting bracket system that is stationary relative to the rotating shaft to complete the power supply to the standard torque sensor installed on the stator mounting bracket, the calibrated torque sensor and the gyro stabilization system, the wireless signal transmission and the controller.

[0032] (4) A gyro 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, the hydraulic torque loading system, the rotor part of the standard torque sensor, the rotor part of the calibrated torque sensor, etc. are rotating, thereby improving the torque sensor speed calibration accuracy.

Claims

1. A dynamic torque calibration test bench system, characterized in that: It includes an electric motor, a high-elastic coupling, an oil distributor and an oil distributor 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 rotor part of the standard sensor, and the rotor part of the calibrated sensor installed inside the torsion bracket system to rotate, thereby completing the simulation of the rotation speed under a dynamic state. The forces at both ends of the hydraulic cylinder in the hydraulic torque loading system act on the flanges on both sides of the rotor part of the standard torque sensor and the rotor part of the calibrated torque sensor in the form of torsion torque through the torsion bracket, respectively, to form a torque load. During the 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 the oil distributor shaft system, thereby completing the application of torque load to the torsion arm according to the set calibration signal. The stator part of the standard torque sensor, the stator part of the calibrated torque sensor and the gyro stabilizer are all installed on the sensor stator mounting bracket of the stator mounting bracket system, and the output signal and the gyro stabilizer control signal are transmitted to the controller through wireless signals to complete the speed measurement and signal output of the calibrated torque sensor.

2. The dynamic torque calibration test bench system according to claim 1, characterized in that: The oil distributor and oil distribution shaft system consists of an oil pipe, an oil distributor and an oil distribution shaft containing an oil channel. The oil distributor is equipped with an oil distribution shaft containing an oil channel. The oil channel of the oil distribution shaft is connected to the oil pipe on the oil distributor. The non-rotating hydraulic oil pressure is converted into a rotating dynamic torque load through the oil distributor, the oil channel and the hydraulic cylinder.

3. 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, and the torsion support support rod is installed on the torsion support disc.

4. The dynamic torque calibration test bench system according to claim 1, characterized in that: 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 installed on the torsion shaft b, and the torsion shaft b is installed at the center of the torsion bracket disc through a bearing, which can reduce the torque error 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, and the hydraulic cylinder is connected to the end of the oil channel of the oil distribution shaft through an oil pipe to realize the hydraulic oil circuit connection.

5. The dynamic torque calibration test bench system according to claim 4, characterized in that: The rotor part of the standard torque sensor and the rotor part of the calibrated torque sensor are installed in series between the torsion shaft a and the torsion shaft b; the torsion shaft b is installed at the center of the torsion bracket disk b through a bearing, which can reduce the torque error caused by friction.

6. The dynamic torque calibration test bench system according to claim 1, characterized in that: 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, the wireless signal transmission and controller are all installed 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 installed on the torsion shaft through a bearing to ensure that when the torsion bracket system, the hydraulic torque loading system, the standard torque sensor rotor part, and the calibrated torque sensor rotor part rotate under the drive of the motor, the stator mounting bracket system will not rotate with the shaft due to gravity.

7. The dynamic torque calibration test bench system according to claim 6, characterized in that: A gyro stabilizer is installed on the sensor stator mounting bracket, which can ensure that the stator mounting bracket system is in a stable state when the torsion bracket system, the hydraulic torque loading system, the standard torque sensor rotor part, the calibrated torque sensor rotor part, etc. are rotating, thereby improving the torque sensor speed calibration accuracy.

8. The dynamic torque calibration test bench system according to claim 1, characterized in that: The stator power supply system consists of a collector ring and a carbon brush slip ring system. The external power supply introduces the power into the support shaft through the collector ring, and connects to the carbon brush slip ring system on the torsion shaft a. The carbon brush slip ring introduces a customized mounting bracket system that is stationary relative to the rotating shaft to complete the power supply for the standard torque sensor installed on the stator mounting bracket, the calibrated torque sensor and the gyro stabilization system, wireless signal transmission and controller.

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