PROBLEM TO BE SOLVED: To provide a charged grain amount detecting device for a grain storing chamber capable of detecting abnormality in a detecting state to keep accuracy in detecting the amount of charged grain.SOLUTION: This charged grain amount detecting device for a grain storage chamber comprises a wire rope 21r hanging and supporting a weight 21w, a take-up drum 22, and a rotation counting means 22s, and further comprises a control processing portion for calculating the amount of charged grain based on a counting signal of the number of times of rotations of the take-up drum 22 necessary for the weight 21w to move between a prescribed reference position of the weight 21w and a grain charging face, and a reference position sensor 24s for detecting the arrival of the weight 21w at the prescribed reference position by taking up the wire rope 21r. The control processing is constituted to allow the take-up drum 22 to perform take-up motion in starting the motion for detecting the amount of charged grain, and to determine the abnormality when a detection signal of the reference position sensor 24s does not exist within a prescribed counting range from the start of take-up.COPYRIGHT: (C)2008,JPO&INPIT【課題】張込穀物量の検出精度を維持できるように、検出状態の異常を検出できる穀物貯留室の張込穀物量検出装置を提供する。【解決手段】穀物貯留室の張込穀物量検出装置は、錘21wを吊り下げ支持したワイヤロープ21rと、巻取ドラム22と、その回転カウント手段22sとを備え、錘21wの所定の基準位置と穀物の張込面との間を錘21wが移動するのに要した巻取ドラム22の回転回数のカウント信号から張込穀物量を算出する制御処理部と、前記ワイヤロープ21rの巻上げにより錘21wが前記所定の基準位置に到達したことを検出する基準ポジションセンサ24sとを備え、張込穀物量の検出動作開始時に巻取ドラム22が巻き上げ動作を行い、巻き上げ開始からから所定のカウント範囲内で前記基準ポジションセンサ24sの検出信号が無いと異常判定を行うように制御処理を構成したものである。【選択図】図19
