Shafting Torsional Vibration Simulation Test Bench and Its Test Method

Abstract

The invention discloses a shafting torsional vibration simulation test bench and a testing method thereof. The simulation test bench includes a rotating shaft, a torsional vibration sensor, a controller, a drive device, and a load torque generating device. Both the torsional vibration sensor and the load torque generating device are Installed on the rotating shaft, the rotating shaft is used to simulate the shafting of the power system of the hybrid excavator; the data output end of the torsional vibration sensor is connected to the data input end of the controller, and the driving device drives the rotating shaft and the load torque generating device to rotate, and the load rotates The torque generating device changes the load torque of the rotating shaft through a pulley mechanism, and simulates the torsional vibration of the shaft system of the power system of the hybrid excavator through the torsional vibration of the rotating shaft under the load torque; then obtains the torsional vibration amplitude of the rotating shaft through the torsional vibration sensor , and input the torsional vibration amplitude data to the controller for data processing analysis and testing. The invention has the advantages of simple operation and simple structure, and can apply an adjustable load torque with short-term impact characteristics to the shaft system.

Description

technical field [0001] The invention relates to a torsional vibration simulation test bench and a test method, in particular to a shafting torsional vibration simulation test bench and a test method which are particularly suitable for hybrid excavators. Background technique [0002] Hybrid excavators have advantages in saving fuel consumption and reducing pollutant emissions, which is one of the development trends of excavators. The development of hybrid excavators has a short period of time, and many key technologies are still immature, so hybrid excavators are still in the stage of development and improvement. [0003] The hybrid excavator power system will generate torsional vibration in the shafting after the ISG motor is introduced. The test results show that the torsional vibration of the shafting of the hybrid power system is likely to cause serious accidents such as shafting fracture. Therefore, it is necessary to carry out in-depth research on the torsional vibrat...

AI Technical Summary

Problems solved by technology

However, considering that the power system of the existing hybrid excavator has a compact and complex structure, it is not suitable to be directly used as a test platform to carry out related research on the torsional vibration test of the shaft system of the hybrid power system.

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