Combined harvester capable of self adaptively adjusting working parameters of cleaning and sorting apparatus

Abstract

The invention relates to a combined harvester capable of self-adaptively adjusting working parameters of a cleaning and sorting apparatus. The combined harvester comprises a second detachment roller, a grain entrainment loss monitoring system, a grain cleaning and sorting loss monitoring system, a cleaning and sorting sieve, a cleaning and sorting fan with adjustable rotation speed, a first detachable roller, a grain impurity content and breaking rate monitoring apparatus and a measurement and control system. The measurement and control system can control the openness of scale sieving pieces, the rotation speed of a cleaning and sorting centrifugal fan and the dip angle of the scale sieving pieces according to an established control model, so that the combined harvest works in an optimal operation state of uniform load on a sieve surface, minimum grain cleaning and sorting loss rate and minimum grain impurity content in a grain box. By using the combined harvester of the invention, various working parameters can be automatically adjusted according to the operation quality in the operation process, so that a fault rate can be controlled within a certain range while the production efficiency is improved, and the fault-free working time and the applicability of the whole machine can be greatly improved.

Description

technical field [0001] The invention belongs to the field of self-adaptive control of combine harvesters, in particular to a combine harvester whose working parameters of a cleaning device can be self-adapted. Background technique [0002] Advanced agricultural equipment is rapidly absorbing and applying the results of the development of electronic information technology. The automation and intelligence of agricultural machinery is the development trend of modern agricultural equipment. Foreign research on the automation and intelligence of combine harvesters has achieved rich results. For example, Huisman, Voo Loo and Heijning judge the size of the feeding amount by detecting the torque of the auger, and control the operating speed, Kruse and Krutz control the operating speed through the load of the engine, and Andersen describes the impact of the volume of the harvested grain on detecting Operating speed is controlled. Japan Kubota PR0481-M combine harvester adopts rubber...

AI Technical Summary

Problems solved by technology

The above studies provide a lot of ideas for the automatic control of the combine harvester, but there are also certain limitations: (1) The research object is mainly concentrated on the load of the threshing drum, and other working parameters are rarely considered, and most of them belong to single-input control signals. The control system has shortcomings such as hysteresis or inaccurate parameter detection; (2) most of the research is in the experimental stage, and no actual automatic control system and corresponding actuators have been developed to be applied to the combine harvester; (3) the existing combine harvester Most of the monitoring research on working parameters and operating performance only focuses on the monitoring and prediction models of cleaning loss, without feedback control based on the monitored cleaning loss rate, and does not consider another important performance index-grain impurity content

Images