PROBLEM TO BE SOLVED: To solve a problem that a spray boom is vibrated and oscillated and generates an abnormal sound, noise, and the like and attachment of an atomization nozzle arranged on the spray boom is easily loosened when the chemical liquid sprayer travels and moves on a road surface or field surface and the spray boom is held at a storage posture position.SOLUTION: A spray boom 2 including a spray nozzle 1 atomizing/spraying chemical liquid is supported and mounted at a front end part of a vehicle body 3 so as to rotate to open/close as opened/enlarged in a lateral direction to a spray posture A and as rotates to a storage posture B along a front/rear direction in a lateral side part of the vehicle body 3. A support guide 4 receiving a tip part of the spray boom 2 in the storage posture B is arranged at a rear part of the vehicle body 3. On the support guide 4, a holding piece 5, which restricts flotation/oscillation of the spray boom 2 in the storage posture B received on an upper surface of the support guide 4, is arranged.COPYRIGHT: (C)2016,JPO&INPIT【課題】道路面や圃場面を走行移動するとき、散布ブームを収納姿勢位置に保持させるときは、散布ブームが振動、揺動して、異音、騒音等を発生したり、散布ブームに配置の噴霧のノズルの取付が緩み易くなる。【解決手段】薬液を噴霧散布する散布ノズル1を有した散布ブーム2を、車体3の前端部に、横方向へ散布姿勢Aに開拡回動させたり、車体3横側部に前後方向に沿った収納姿勢Bに回動させるように、開閉回動可能に支持装着し、前記車体3の後部には、前記散布ブーム2の収納姿勢B位置先端部を受ける支持ガイド4を設け、この支持ガイド4上には、この支持ガイド4上面に受けた収納姿勢Bの散布ブーム2の浮上揺動を制止する抑え片5を設ける。【選択図】図6
