An automatic balancing device and control method for combine harvester threshing drum

Abstract

The invention provides an automatic balancing device and control method for a threshing drum of a combine harvester, comprising an annular outer shell, a counterweight slider, an annular guide rail, an annular inner shell, a permanent magnet and a dynamic balance detection system; the annular inner shell is located in the annular outer shell Inside the body, the annular guide rail is installed between the annular outer shell and the annular inner shell. There are multiple counterweight sliders distributed along the circumferential direction of the annular guide rail. Each counterweight slider is equipped with an electromagnetic solenoid; The dynamic balance detection system includes a detection mechanism and a controller; the detection mechanism is used to measure the vibration signal of the threshing cylinder shaft and the rotational speed of the threshing cylinder; the controller calculates the unbalance of the threshing cylinder, including the phase and the Counterweight is required, and the current of the electromagnetic solenoid is controlled through the wire according to the phase and the result of the required counterweight, thereby controlling the movement of the counterweight slider on the circular guide rail, realizing the online active dynamic balance adjustment of the threshing drum of the combine harvester, and improving the threshing effect and work efficiency.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to an automatic balancing device and a control method for a threshing drum of a combine harvester. Background technique [0002] Rotors are widely used in agricultural machinery, and the imbalance of rotors aggravates the vibration and noise of the whole machine, which in turn leads to reduced working effects, frequent machine failures, and shortened working life of the machine. The threshing drum is the main working part of the combine harvester for threshing and separation. It is usually balanced on the dynamic balancing machine before assembly. However, because the dynamic balancing machine cannot ensure that the supporting state is exactly the same as that of the machine, and the boundary conditions of the rotor change after assembly, at the same time It is also affected by the transmission components, so a new imbalance will be generated when the roto...

AI Technical Summary

Problems solved by technology

However, the traditional online dynamic balancing method often ignores the influence of the transmission on the unbalanced phase, which leads to poor balancing effect, and the allowable remaining unbalanced amount cannot meet the requirements

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