Cylinder concave screen type threshing system with anti-winding and anti-clogging functions

Abstract

The invention relates to the field of agricultural machine threshing equipment and particularly relates to a cylinder concave screen type threshing system with anti-winding and anti-clogging functions. The system comprises a threshing cylinder, a curved cover plate, a grate concave screen, an anti-blocking mechanism and an anti-winding mechanism. The anti-blocking mechanism comprises a rotating shaft and a fixed shaft. An upper end of a rotating shaft is fixedly provided with a cylindrical cam, the fixed shaft is slidingly provided with a support block and a spring for pushing the support block upward, an upper edge of the support block and a cam lower edge of the cylindrical cam are in contact fit, and the lifting and lowering of the support block on the fixed shaft are controlled by therotation of the cylindrical cam. The support block is hinged to one side of the grate concave screen, and the other side of the grate concave screen is hinged to the frame. The anti-winding mechanismcomprises a knife holder fixed on an inner arc surface of the curved cover and multiple cutters fixed on the knife holder with spacing. According to the system, the winding of the threshing drum and the clogging between the threshing drum and the grate concave screen can be conveniently and quickly processed, and therefore, the working efficiency is improved.

Description

technical field [0001] The invention relates to the field of agricultural machinery threshing equipment, in particular to a drum concave plate sieve type threshing system with anti-winding and anti-blocking functions. Background technique [0002] At present, the threshing device on the combine harvester is usually composed of a drum and a concave plate. When the material passes through the gap formed by the threshing drum and the concave plate, it is threshed by the impact of the threshing element, combing and other forces. When the crops are wet or there are many weeds, the threshing drum is prone to winding and clogging, resulting in increased operating load, overloading of the engine, poor threshing effect, and even failure of the harvester to work normally. In the event of a winding or blockage fault, it is necessary to stop the machine in time for maintenance and adjustment, which seriously affects the work efficiency. Contents of the invention [0003] The present ...

AI Technical Summary

Problems solved by technology

When the crops are wet or there are many weeds, the threshing drum is prone to winding and clogging, resulting in increased operating load, overloading of the engine, poor threshing effect, and even failure of the harvester to work normally.

Once winding or blockage occurs, it is necessary to stop in time for maintenance and adjustment, which seriously affects the work efficiency

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