PROBLEM TO BE SOLVED: To spray a chemical on crops to be sprayed with the chemical while preventing contact with the crops even if a working vehicle travels on an inclined work area or a bad road, etc.SOLUTION: A chemical spraying device 10 capable of being installed on a working vehicle 1 comprises: a chemical tank 11； a chemical injection part 12 for injecting a chemical supplied from the chemical tank 11； a plurality of first injection supporting parts 31 comprising the chemical injection part 12, and having a vertical posture extending in an up-down direction； and a second injection supporting part 32 extending in a right-left direction from the side of the chemical tank 11, and supporting the plurality of first injection supporting parts 31. Each of the plurality of first injection supporting parts 31 is provided so as to be rockable around an axis along a front-back direction with respect to the second injection supporting part 32.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】作業車両が傾斜する作業地や悪路等を走行する場合でも、薬剤散布対象の作物との接触を防止しながら、その作物への薬剤散布を行うこと。【解決手段】作業車両１に搭載可能な薬剤散布装置１０であって、薬剤タンク１１と、その薬剤タンク１１から供給される薬剤を噴出させる薬剤噴出部１２と、薬剤噴出部１２を有し、上下方向に延びる縦向き姿勢の複数の第１噴出支持部３１と、薬剤タンク１１側から左右方向に延びて複数の第１噴出支持部３１を支持する第２噴出支持部３２とが備えられ、複数の第１噴出支持部３１の夫々は、第２噴出支持部３２に対して前後方向に沿う軸心周りで揺動自在に備えられている。【選択図】図３
