PROBLEM TO BE SOLVED: To provide a spray controller for a chemical spraying vehicle vertically movably including right and left booms, allowing burden reduction on a worker accompanying spray resumption after a machine body turn when spraying a chemical.SOLUTION: The chemical spraying vehicle transferring to an adjacent area by a turn travel from a linear spray travel and starting a linear spray travel to the opposite direction vertically movably includes the right and left chemical-spraying booms (9b, 9b), and the positions of the right and left booms (9b, 9b) can be changed over between work positions for low position spray and non-work positions for high position shunting. This spray controller for the chemical spraying vehicle is provided with control processing of performing changeover control of the boom (9b) on a turn outer side to the non-work position by the first steering angle detection not less than a prescribed turn decision steering angle during the linear spray travel, deciding a turn end by the succeeding second steering angle detection not less than the turn decision steering angle on the same side, and changing over the boom (9b) to the work position by the decision of the turn end.COPYRIGHT: (C)2012,JPO&INPIT【課題】左右のブームをそれぞれ昇降可能に備えて薬剤散布する際の機体旋回後の散布再開に伴う作業者の負荷軽減を可能とする薬剤散布車の散布制御装置を提供する。【解決手段】薬剤散布車の散布制御装置は、直線散布走行から旋回走行により隣接域に移行して逆方向の直線散布走行を開始する薬剤散布車に薬剤散布用の左右のブーム(9b,9b)を昇降可能に備え、これら左右のブーム(9b,9b)を低位散布のための作業位置と高位待避のための非作業位置にそれぞれ切替え可能に構成され、直線散布走行中に所定の旋回判定舵角以上となる1回目の舵角検出によってその旋回外側のブーム(9b)を非作業位置に切替え制御し、これに続く同側の旋回判定舵角以上となる2回目の舵角検出によって旋回終了と判定し、この旋回終了の判定によって上記ブーム(9b)を作業位置に切替える制御処理を設けたものである。【選択図】図8
