A sprocket wear on-line monitoring system and a grain combine harvester chain transmission system

Abstract

The invention provides an on-line monitoring system for sprocket wear and a grain combine harvester chain transmission system, including a sensor assembly, an analysis and processing module and a state monitoring device; the laser displacement sensor is used to measure various parts of the gear teeth during the rotation of the sprocket The displacement of the eddy current displacement sensor is used to measure the amplitude of the sprocket installation shaft; the sensor assembly is input into the analysis processing module through the signal acquisition unit; the analysis processing module includes a roundness calculation module and a tooth surface wear analysis module; The roundness calculation module judges whether the sprocket profile is worn according to the displacement of each part of the teeth during the rotation of the sprocket and the amplitude of the installation shaft of the sprocket; Displacement to judge whether the sprocket teeth are worn. The invention has the advantages of simple structure, convenient installation and high reliability, and the signal obtained through the processing of the analysis module can more truly reflect the actual state and motion characteristics of the sprocket.

Description

technical field [0001] The invention relates to the field of sprocket wear monitoring or the field of intelligent combine harvesters, in particular to an on-line sprocket wear monitoring system and a grain combine harvester chain transmission system. Background technique [0002] The working environment of the grain combine harvester is harsh and the working conditions are complicated. The severe vibration of the whole machine makes the key parts prone to fatigue damage and poor reliability. pitting etc. If the driver fails to detect and deal with it in time, the problematic sprocket will cause the wear of the transmission chain, the reduction of the system speed and even the damage of the machine. Ultimately reduce the efficiency of the combine harvester when working together, and waste a lot of time, and may cause continuous damage to other working parts, eventually leading to a significant reduction in the reliability of the whole machine. Therefore, in order to effecti...

AI Technical Summary

Problems solved by technology

[0004] The above invention patents can realize real-time monitoring of the working status and fault conditions of the combine harvester, but the structure is complicated, the cost is high, the precision is not high, and it is difficult to apply to the fault detection, specific positioning and online monitoring of the sprocket in the chain drive system

At present, there is no systematic and accurate monitoring method for the roundness change of the sprocket and the wear of the sprocket, and the complex working environment will lead to distortion of the existing measurement signal and a decrease in the reliability of the whole machine

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