CONSTRUCTION MACHINERY

摘要

A counterweight (9) provided on a rear side of an upper revolving structure (3) is formed as a block body in which a boundary position between a rear surface (9B) and the upper surface (9C) is a projected curved surface (9E) which is curved with a projected arc shape. A rear camera device (11) mounted on the upper surface (9C) of the counterweight (9) is arranged on the upper surface (9C) of the counterweight (9) and in a state protruding rearward toward the projected curved surface (9E) of the counterweight (9). On the other hand, a cover member (19) covering a gap (18) formed by the projected curved surface (9E) is provided between the projected curved surface (9E) of the counterweight (9) and a rear part lower surface (12F) of a mounting plate (12) of the rear camera device (11).