CONNECTING STRUCTURE OF SPIRAL CYLINDER IN THRESHER

摘要

PROBLEM TO BE SOLVED: To miniaturize and lighten a connecting structure by combinedly using a connecting case respectively communicating a first gutter to a grain- lifting cylinder and a second gutter to a reducing cylinder. SOLUTION: Grains threshed and graded at a threshing part are lifted and conveyed to a grain tank from a first gutter 21 through a body side plate 25 by a first connecting case 22 and a grain-lifting cylinder 24. Not graded grains are lifted and conveyed from a second gutter 27 through the body side plate 25 by a second connecting case 28 and a reducing cylinder 30 to a swingable grading part, and graded again by the swingable grading part. The first and the second connecting cases 22 and 28 are composed of a same member, and the body side plate 25 and the first connecting case 22, and the body side plate 25 and the second connecting case 28 are each connected through a cylindrical spacer 32. The difference between the protruding distance from the body side plate 25 to the lower end of the grain-lifting cylinder 24 and the protruding distance from the body side plate 25 to the lower end of the reducing cylinder 30 is absorbed by the cylindrical spacer 32.