Threshing device, combined harvester equipped with threshing device and control method

Abstract

The invention provides a threshing device, a combined harvester equipped with the threshing device and a control method. The threshing device includes diameter adjusting devices which are installed between supporting spoke plates and used for adjusting the diameter of a threshing drum through eccentric slider mechanisms. Each diameter adjusting device includes a power system, a sleeve, turntables,connecting rods and synchronous wheels, wherein the connecting rods are respectively fixed to the two ends of a threshing toothed bar, the connecting rods are installed in a radial sliding manner onthe supporting spoke plates, the sleeve is installed outside a drum shaft, the two ends of the sleeve are respectively in transmission connection with the turntables, a number of grooves are evenly distributed on the turntables, a movable synchronous wheel is installed in each groove, each synchronous wheel is connected with the corresponding connecting rod, and the connecting rods can move in theradial direction on the supporting spoke plates through the rotation of the turntables. During the harvesting of grains of different varieties and different levels of maturity, the adaptability of the threshing device of the combine harvester is greatly improved, and the production efficiency of the combine harvester is improved.

Description

technical field [0001] The invention relates to the technical field of combine harvesters or the technical field of intelligent agricultural machinery, in particular to a threshing device, a combine harvester equipped with the threshing device and a control method. Background technique [0002] The threshing drum is an important part of the combined harvesting machine. During the working process, it cooperates with the concave screen to separate the grain from the stem. Among them, the linear speed of the threshing element of the threshing drum and the threshing diameter of the drum have a great influence on the grain threshing quality. At present, the threshing devices of the combine harvester mostly use a single drum with a fixed speed and diameter, which is suitable for different varieties, different moisture contents, and different maturity grains. The threshing adaptability is poor, and the threshing effect is not ideal. In order to solve the above problems, scholars ha...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a threshing device, a combine harvester installed with the threshing device and a control method, which solves the cumbersome and difficult adjustment of the diameter of the threshing drum of the existing combine harvester. When the threshing diameter and the linear speed of the threshing elements are single, they cannot meet the best harvesting conditions of each grain, resulting in problems such as poor adaptability of the threshing function of the combine harvester and unstable operation performance. The threshing device with threshing diameter enables the combine harvester to adjust the drum threshing diameter and drum speed according to the actual situation when harvesting different varieties of grains, improve its harvesting adaptability and operation stability, and improve the threshing quality of grains and reduce the total amount of grains. loss rate

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