PROBLEM TO BE SOLVED: To provide a height adjustment device for a bush-cutter in which the bush-cutter is easily adjusted in a desired suspension height and can be fixed in the height while suspending a bush-cutter in a suspension belt.SOLUTION: A height adjustment device 10 for a bush-cutter includes: a belt side member 11 having a belt connection part 11f for connecting a suspension belt 30 a bush-cutter side member having a bush-cutter connection 12e for connecting the bush-cutter 20 a bellows member 13 having one end side being fixed to the belt side member 11 and having the other end side being fixed to a bush-cutter side member 12 and bellows operation means 14 for telescopically moving the bellows member 13 by performing operation for supplying fluid in the inside of the bellows member 13 or draining the fluid from the inside of the bellows member 13. The bellows operation means 14 is operated to telescopically move the bellows member 13 and the position of the bush-cutter side member 12 to the belt side member 11 is changed, and thereby the height of the bush-cutter 20 to the suspension belt 30 can be adjusted.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】 吊下ベルトに刈払機を吊り下げた状態のまま、刈払機を所望の吊り下げ高さに容易に調節してその高さで固定することのできる刈払機用高さ調節装置を提供する。【解決手段】 刈払機用高さ調節装置10を、吊下ベルト30を連結するためのベルト連結部11fを有するベルト側部材11と、刈払機20を連結するための刈払機連結部12eを有する刈払機側部材と、一端側がベルト側部材11に固定されて他端側が刈払機側部材12に固定されたベローズ部材13と、ベローズ部材13の内部に流体を供給又はベローズ部材13の内部から流体を排出する操作を行うことによりベローズ部材13を伸縮させるベローズ操作手段14とを備えたものとし、ベローズ操作手段14を操作してベローズ部材13を伸縮させ、ベルト側部材11に対する刈払機側部材12の位置を変化させることで、吊下ベルト30に対する刈払機20の高さを調節することができるようにした。【選択図】 図3
