PROBLEM TO BE SOLVED: To provide a strengthened chemical tank free from deformation even in a filled-up time.SOLUTION: A chemical tank 9 includes an operation seat arrangement space 9a for arranging an operation seat 6 in a front side right/left intermediate part, and is configured such that a front side part of the operation seat 6 is opened and right/left both sides and a rear side part are surrounded in a state in which the operation seat 6 is arranged in the operation seat arrangement space 9a. The chemical tank 9 is integrally configured without a joint by rotation molding with a synthetic resin material. Near a bottom part of the chemical tank 9, a thick wall belt body 9b is arranged along an outer periphery of the tank.COPYRIGHT: (C)2016,JPO&INPIT【課題】満タン時にも変形しない強固な薬液タンクを提供する。【解決手段】薬液タンク9の前側左右中間部に操縦席6配設用の操縦席配設空間9aを設け、該操縦席配設空間9aに操縦席6を配設した状態で該操縦席6の前側部を開放し、左右両側及び後側部を取り囲むように構成している薬液タンク9である。そして、薬液タンク9を合成樹脂材で回転成形により製造し継ぎ目のない一体構成とし、且つ、薬液タンク9の底部近くにはタンクの外周に沿うように肉厚帯状体9bを構成する薬液散布作業車の薬液タンクとする。【選択図】図6
