PROBLEM TO BE SOLVED: To stably retain an attitude of a marker in a non-working attitude by reducing a possibility of easily disengaging from the engagement with a hook by swinging of the marker.SOLUTION: A working device or a traveling machine body comprises a marker locking fixture 50 that is engaged with a locking object part 46 of a marker 40 in a lifted non-working attitude and fixes the position so as to mechanically prevent swinging movement of the marker 40 toward a lowering side. The marker locking fixture 50 includes a pair of locking parts 54 located at both front and rear sides of a marker arm 41 and engaging the locking object part 46, and an introduction guide part 55 that is, in the swinging axis directional view of the marker arm 41, overlapped with a presence position of the marker arm 41, the position of which is fixed at the lifted non-working attitude.COPYRIGHT: (C)2014,JPO&INPIT【課題】マーカの揺れ動きなどによりフックとの係合が外れやすくなる可能性を低減して、マーカの非作用姿勢での姿勢を安定良く維持できるようにする。【解決手段】作業装置又は走行機体側に、上昇非作用姿勢におけるマーカ40の被係止部46に係合して、そのマーカ40の下降側への揺動移動を機械的に阻止するように位置固定するマーカロック金具50を備え、マーカロック金具50には、マーカアーム41の前後両側に位置して被係止部46に係合する一対の係止部54と、上昇非作用姿勢で位置固定されたマーカアーム41存在箇所に対して、そのマーカアーム41の揺動軸心方向視で重複する導入ガイド部55とを備えている。【選択図】図5
