Flexible threshing device capable of automatically adjusting threshing gaps

Abstract

The invention discloses a flexible threshing device capable of automatically adjusting threshing gaps. The flexible threshing device comprises a rack, a roller top cover, a threshing roller capable of automatically adjusting the diameter, a concave grid, a motor, a pressure sensor and a variable damping type telescopic executing mechanism, wherein the threshing roller comprises a rigid long toothed bar, a flexible short toothed bar, a width plate, a threshing cylinder main shaft, a sleeve, a central processor and a storage battery, a plurality of radial variable damping type telescopic execution mechanisms are uniformly distributed on the edge of the width plate, main bodies of the variable damping type telescopic executing mechanisms are cylinder barrels with double pistons, floating pistons and working pistons connected to piston rods are sequentially arranged in the barrel walls of the cylinder barrels from inside to outside, and the flexible threshing device further comprises high-pressure nitrogen, a magnetorheological fluid material, an electromagnetic coil, a throttling hole and a wire channel. According to the flexible threshing device, in the operation process of the machine, state control of magnetorheological fluid materials can be achieved through small current so as to achieve stepless reducing within a certain range, the requirements of different feeding amounts for the threshing gaps can be met, and therefore the problems of roller blockage and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a flexible threshing device which can automatically adjust the threshing gap. Background technique [0002] At present, the threshing and separating device is one of the core working parts of the combine harvester, and its working performance affects the performance of the whole machine. When the harvester is actually harvesting in the field, due to factors such as uneven crop quality per unit area and unsmooth crop movement, the actual feeding amount will fluctuate greatly. The change of feeding amount will not only affect the working performance of the whole machine, but even cause blockage and shutdown in severe cases. When a blockage occurs, it will not only take time and effort to remove the blockage, but also may damage important mechanical parts and transmission components, resulting in downtime for maintenance, delaying farming time, and bringi...

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Problems solved by technology

[0003] In view of this, in order to solve the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a flexible threshing device that can automatically adjust the threshing gap, which can realize a certain range of stepless diameter change during the operation of the machine, so as to Adapt to the requirements of different feeding volumes for the threshing gap, so as to prevent problems such as drum clogging

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