Intelligent control device and control method of guide plate of combined harvester

Abstract

The invention relates to an intelligent control device and an intelligent control method of a guide plate of a combined harvester, and belongs to the field of agricultural harvest machinery driving mechanisms. The control device is mainly used for a grain combined harvester, in order to solve the problem that crop threshing time and motion stroke of a threshing device of the existing combined harvesters are difficult to control. The intelligent control method of the guide plate includes firstly detecting operation signals of grain feed quantity, grain losses and an included angle between the guide plate and the shaft centerline of a threshing cylinder and the like by means of a surface-mounted pressure sensor, a grain loss sensor and an angular displacement sensor, sending the operation signals into a microcontroller by a signal conditioning circuit, and conducting set value preprocessing; secondly controlling a driving device according to a calculated value change output signal; and finally adjusting the included angle between the guide plate and the center line of the cylinder of the combined harvester through gears and chains by the driving device. The control device can control crop movement speed, reduce threshing loss, reduce clogging failure rate, and greatly improve intelligent degree of operation of the combine harvester, and is also suitable for other types of combine harvesters.

Description

technical field [0001] The invention belongs to the field of driving mechanisms of agricultural harvesters, and in particular relates to an intelligent control device and a control method for a deflector of a combine harvester. Background technique [0002] The separation device is the core part of the combine harvester. The speed of the axial movement of the stalk in the threshing separation device depends on the diversion angle of the deflector on the top cover of the drum. With the improvement of crop varieties and the increase of yield, domestic and foreign scholars have Started research on deflector control methods. The document "Application of atomic tracer technology to study the movement law of crops in the axial flow drum" [Grain and Oil Processing and Food Machinery, 1983 (1): 43-47] pointed out that the diversion angle of the deflector on the top cover of the longitudinal axial flow drum should be reduced. It can increase the movement stroke of the material in th...

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Problems solved by technology

Although some of the above documents and patents have optimized the structural parameters of the deflector and carried out experimental research on the deflector, to a certain extent, the residence time of the crops in the threshing chamber has been controlled to ensure that different crops can obtain good threshing effects, but the relevant guides The flow plate angle control is in the stage of experimental research or manual operation, and it cannot be operated in real time according to the change of crop feed amount and threshing loss. The degree of intelligence is low, and it cannot adapt to the complexity of field crop characteristics, terrain changes and crop localization. The change of uneven density directly affects the degree of rice damage and the performance of the threshing device

So far, there has been no report on the intelligent deflector of the threshing and separation device in the published literature, patents and related reports in my country.

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