A transmission shaft monitoring device and a threshing drum shaft monitoring device

Abstract

The invention provides a transmission shaft monitoring device, including an electromagnetic induction signal generating device and a control system; the electromagnetic induction signal generating device is used to detect the voltage change signal generated by the rotation of the transmission shaft; the control system is used to analyze and judge the The voltage change signal input by the electromagnetic induction signal generating device. The electromagnetic induction signal generating device includes a pair of magnetic poles, a coil, a metal ring, a brush and a voltage sensor; the pair of magnetic poles is used to generate a magnetic field at the end of the transmission shaft; the end surface of the transmission shaft is fixed with a coil for cutting the lines of magnetic force; two The metal ring is installed on the shaft end of the transmission shaft, and the two metal rings are not in contact with each other; the two ends of the coil are respectively connected to the two metal rings; the two brushes are respectively in contact with the two metal rings , the two brushes and the voltage sensor form a closed circuit. The present invention can monitor whether the state of the drive shaft meets the design requirement by analyzing the voltage amplitude and cycle output by the voltage sensor.

Description

technical field [0001] The invention relates to the field of vibration detection or the field of vibration monitoring of combine harvesters, in particular to a transmission shaft monitoring device and a threshing drum shaft monitoring device. Background technique [0002] The working environment of the combine harvester is harsh and the working conditions are complicated, so the threshing drum often has problems such as grain blockage and speed drop. If the driver fails to detect and deal with it in time, excessive feeding and low speed will lead to poor grain threshing. Clean, thereby wasting a large amount of food, and the threshing efficiency of the threshing drum is also greatly reduced. Therefore, in order to effectively improve the working efficiency and threshing efficiency of the combine harvester threshing cylinder, it is of great significance to monitor the working state of the threshing cylinder in real time. [0003] At present, the devices and methods for monit...

AI Technical Summary

Problems solved by technology

The above-mentioned structure is complex, expensive, and there are many interference signals. In addition, due to the torsional vibration of the threshing drum shaft, the measurement accuracy of the rotational speed or torque sensor will be greatly reduced, and the complex working environment will lead to distortion of the measurement signal and reduced reliability.

Images