PROBLEM TO BE SOLVED: To provide a grapple device for a self-advancing working machine capable of improving the linkage of a pair of holding arms, and also improving working efficiency.SOLUTION: A grapple device 21 for a self-advancing working machine comprises: a pair of holding arms 31L, 31R disposed rotatably in the width direction of the self-advancing working machine to hold an object 10 and a cylinder 29 for holding arms for driving the holding arms 10L, 10R to open and close them. A plurality of a pulling springs 45 giving urging forces in a direction in which the holding arms 31L. 31R are opened are provided.COPYRIGHT: (C)2009,JPO&INPIT【課題】一対の把持アームの連動性を高めることができ、作業効率の向上を図ることができる自走式作業機械のグラップル装置を提供する。【解決手段】自走式作業機械の幅方向に回動可能にそれぞれ設けられ、対象物10を把持可能な一対の把持アーム31L,31Rと、これら把持アーム10L,10Rを開閉駆動する把持アーム用シリンダ29とを備えた自走式作業機械のグラップル装置21において、把持アーム31L,31Rを開く方向の付勢力をそれぞれ付与する複数の引張スプリング45を設ける。【選択図】図6
