PROBLEM TO BE SOLVED: To provide a ground breaking-up tool which can be separated into a ground breaking-up tool body and a blade member, and of which thrusting blades can be changed when they are broken or worn, and also capable of using the blade member by selecting the most suitable one to the difference of soil quality.SOLUTION: This ground breaking-up tool obtained by installing the thrusting blades 9 having a plurality of pieces in parallel state and projecting to lower direction at the tip end of the ground breaking-up tool body 2, and also a pipe 4 as a fulcrum at the back surface side position of the ground breaking-up tool body 2 and the thrusting blades 9 is provided by forming the blade member 3 including the thrusting blades 9 as a separate body from the ground breaking-up tool body 2, and detachably fixing the blade member 3 to the ground breaking-up tool body 2.COPYRIGHT: (C)2013,JPO&INPIT【課題】土起こし器を土起こし器本体と刃物部材に分け、突刺し刃が破損又は磨耗した場合の取り替えや、土質の違いに対して適応した刃物部材を選択して使用することができる土起こし器を提供する。【解決手段】土起こし器本体2の先端に複数本が並列状態で下方に突出する突刺し刃9を設け、前記土起こし器本体2と突刺し刃9の背面側の位置に支点用パイプ4を設けた土起こし器であって、前記突刺し刃9を備えた刃物部材3を土起こし器本体2と別体に形成し、この刃物部材3を土起こし器本体2に対して取外し可能に固定した。【選択図】図1
