PROBLEM TO BE SOLVED: To provide a harvester with a conveyance unit for holding and conveying the reaped grain culm by a grain culm conveying member and a holding member opposed to the grain culm conveying member in which a sign of straw jamming can be determined with high accuracy, and thereby the unnecessary labor and time due to the straw jamming can reliably be eliminated or be reduced.SOLUTION: A harvester with a conveyance unit for holding and conveying the reaped grain culm by a grain culm conveying member and a holding member opposed to the grain culm conveying member is provided with multiple displacement sensors for detecting time displacement of the thickness of the grain culm conveyed by the conveyance unit separately in the conveyance direction of the grain culm, and is provided with a control device for determining a sign of straw jamming of the grain culm based on distribution of correlation obtained from the displacement corresponding to each output value of any 2-displacement sensors among multiple displacement sensors.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2018,JPO&INPIT【課題】刈り取った穀稈を穀稈搬送部材と該穀稈搬送部材に対向する挟持部材とで挟持搬送する搬送部を設けた収穫機であって、藁詰まりの予兆を精度良く判定することができ、これにより藁詰まりによる余計な手間および時間を確実に無くす或いは少なくすることができる収穫機を提供する。【解決手段】刈り取った穀稈を穀稈搬送部材と該穀稈搬送部材に対向する挟持部材とで挟持搬送する搬送部を設けた収穫機には、搬送部にて搬送される穀稈の厚みの時間的変位を検知する変位センサが穀稈の搬送方向に離間して複数設けられ、複数の変位センサのうちの任意の2つの変位センサのそれぞれの出力値に対応する変位から得られる相関関係の分布に基づいて穀稈の藁詰りの予兆を判定する制御装置が設けられている。【選択図】図8
