PROBLEM TO BE SOLVED: To provide a spraying work machine capable of notifying an operator of an appropriate operation range.SOLUTION: A speed sprayer 1 includes a spray amount acquisition part 31 for acquiring a target spray amount per unit area of liquid chemical sprayed by a spraying device 3, a characteristics acquisition part 32 for acquiring nozzle characteristics on the atomization in a spraying nozzle 10, a range calculation part 36 for calculating a speed range of a vehicle 2 in which the liquid chemical can be sprayed with the target spray amount based on the target spray amount acquired by the spray amount acquisition part 31 and the nozzle characteristics acquired by the characteristics acquisition part 32, and a display part 22 for displaying the speed range of the vehicle 2 calculated by the range calculation part 36.SELECTED DRAWING: Figure 3【課題】作業者に対して適切な動作範囲を通知可能な散布作業機を提供する。【解決手段】スピードスプレーヤ１は、散布装置３によって散布する薬液の単位面積あたりの目標散布量を取得する散布量取得部３１と、噴霧ノズル１０における噴霧に関するノズル特性を取得する特性取得部３２と、散布量取得部３１で取得された目標散布量と、特性取得部３２で取得されたノズル特性とに基づいて、目標散布量で薬液を散布可能な車両２の速度範囲を演算する範囲演算部３６と、範囲演算部３６で演算された車両２の速度範囲を表示する表示部２２と、を備える。【選択図】図３
