| 摘要 |
PROBLEM TO BE SOLVED: To accurately and stably adjust the initial opening of a dust-sending guide.SOLUTION: A dust-sending guide apparatus of a thresher is equipped with a dust-sending guide 7 rotatable around a rotation shaft 19 as a center, a bracket 23, an urging means (an urging member 20) that is constituted between the bracket 23 and the dust-sending guide 7, and urges the dust-sending guide 7 in an opening closing direction, a rotation regulation means (a long hole 23a and a stopper pin 22d) that is constituted between the bracket 23 and the dust-sending guide 7 and regulates the rotation in the closing direction of the dust-sending guide 7 urged by the urging means at an initial opening position, and a rotation position change means (an adjustment tool 25, an engagement member 26 and a bolt 27 with a knob) that changes stepwisely the rotation position of the bracket 23. The initial opening of the dust-sending guide 7 is stepwisely adjusted without changing the urging force of the dust-sending guide 7 by the urging means on the basis of the rotation position change of the bracket 23 by the rotation position change means. |
