Combine harvester cleaning impurity rate self-adaptive control device and self-adaptive control cleaning method

Abstract

The invention relates to a combine harvester cleaning impurity rate self-adaptive control device and a self-adaptive control cleaning method. The control device comprises a return stroke board, a cleaning screen, an impurity collection auger, a grain collection auger, a cleaning grain loss monitoring sensor, a cleaning centrifugal fan, an automatic grain tank grain impurity rate monitoring device and an online monitoring and control system. A multi-duct cleaning device operation state online monitoring and control system collects the grain tank grain impurity rate, the inclination angles of an air division board I and an air division board II of a lower air outlet of the cleaning centrifugal fan, the opening degree of a louver sieve, the rotation speed of the fan and the vibration frequency of a vibration screen in real time, corresponding control signals are output in real time to act on drive devices of an inclination angle adjusting mechanism of the air division board I and the air division board II of the lower air outlet of the cleaning centrifugal fan of a multi-duct cleaning device, an opening degree adjusting mechanism of the louver sieve of the vibration screen, a vibration frequency adjusting mechanism of the vibration screen and a rotation speed adjusting mechanism of the fan, various work parameters are automatically adjusted according to operation quality, production efficiency can be remarkably improved, and fault-free work time of a whole machine can be remarkably prolonged.

Description

technical field [0001] The invention belongs to the field of design and adaptive control of a combine harvester cleaning device, in particular to an adaptive control device and method for a combine harvester cleaning impurity content rate. Background technique [0002] The cleaning device is the "digestive system" of the combine harvester, and it is the core working part that affects the operation quality, efficiency and adaptability of the whole machine. Most of the rice combine harvesters with the largest stock in my country's market use traditional wind screen cleaning devices (single-channel centrifugal fan + double-layer vibrating screen). The floating characteristics of each component (including grains, short stems, glumes, and a small amount of light debris, etc.) are different, and the double-layer vibrating woven screen or fish scale sieve is used to complete the separation and cleaning of grains, stems, and debris. Studies have shown that the traditional wind scree...

AI Technical Summary

Problems solved by technology

Compared with the advanced combine harvesters of European and American multinational companies, most of my country's grain combine harvesters are only equipped with a small number of alarm devices such as blockage and full grain tanks, and generally lack intelligent monitoring such as monitoring of working parameters and performance, electric / automatic adjustment of working parameters, etc. The device makes the operation performance of the machine unstable, and the operation efficiency depends on the proficiency of the machine operator, and the operation intensity is high, and the blockage failure occurs frequently. Operational requirements for chemical production and rice-oil (wheat) rotation areas such as rush harvesting and rush planting

In recent years, scholars at home and abroad have carried out a lot of research work on the intelligent technology of combine harvesters, but most of the research is only on the monitoring or prediction model of a single working parameter and operating performance parameter, and there is no basis for monitoring the current operating conditions. Feedback control of related components by parameter values ​​and relatively few studies on fusion control of multi-job parameters

[0005] For the monitoring of the performance of the cleaning device, the relevant intelligent technology research mainly focuses on the monitoring of the cleaning loss of the grain, without considering another important performance index - the impurity content of the grain

Therefore, an automatic monitoring device for the grain impurity content of the grain box of the combine harvester with good performance is the prerequisite for realizing the adaptive control of the operating parameters of the cleaning device. According to the literature search, so far, there has been no use of the grain impurity content of the grain box of the combine harvester in my country. Report on Automatic Monitoring of Cleaning Device's Operational Performance

Images