Coaxial double-speed threshing cylinder

Abstract

The invention discloses a coaxial double-speed threshing cylinder of a threshing device of a half-feed combine harvester. The coaxial double-speed threshing cylinder comprises a high-speed cylinder and a low-speed cylinder, wherein the low-speed cylinder is positioned on the left side of the high-speed cylinder; the outside diameter of the high-speed cylinder is less than the inside diameter of the low-speed cylinder on the connection part of the high-speed cylinder and the low-speed cylinder; the left end of the body of the high-speed cylinder is 15 to 25mm extended into the body of the low-speed cylinder to form a socket joint structure; the low-speed cylinder is provided with threshing plate teeth on the socket joint part with the high-speed cylinder; and the threshing plate teeth are 3 to 5mm extended out of the right end face of the body of the low-speed cylinder. The coaxial double-speed threshing cylinder has the advantages of high integral structural strength, simple manufacturing, reliable work and good anti-blockage effect, and can excellently adapt to different characteristics of physical states of materials at a front threshing section and a rear threshing section in the threshing chamber, and several main performance indexes such as threshing rate, damage rate, loss rate and energy consumption well are simultaneously considered.

Description

technical field [0001] The invention relates to the field of half-feed combine harvesters, in particular to a threshing device of the half-feed combine harvester. Background technique [0002] In the front section of the threshing chamber of the threshing device of the semi-feeding combine harvester, the crop has just been fed, which contains a relatively large amount of easy-to-thresh kernels. In the back section of the threshing chamber, the grains remaining on the crop stalks have a high connection strength with the stalks, and most of them are difficult to remove. At present, the threshing device of semi-feed combine harvester generally adopts single-drum threshing mechanism, which cannot well adapt to the characteristics of different physical states of materials in the front and rear threshing sections in the threshing chamber, and it is difficult to make the threshing rate, crushing rate, loss rate and energy consumption several items Key performance indicators are we...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of the existing coaxial double-speed threshing drum technology, the anti-clogging structure has low connection strength and high maintenance cost, and at the same time, to further improve the effectiveness of the anti-clogging structure, the present invention provides a high-strength structure, simple manufacture, and reliable operation. A coaxial two-speed threshing drum with good anti-clogging effect

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