| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems of conventional working machines that a line-drawing marker and a visual confirmation marker are placed at a side or a front part of a machine body and, accordingly, these markers are frequently positioned at the outermost side when gyrating the machine body to cause risk of interference with a levee, surrounding wall surfaces, or the like in the gyration of the body, and when interfering the line-drawing marker and the visual confirmation marker, the worker has to perform a troublesome work to house the line-drawing marker and the visual confirmation marker in the gyration of the machine body. Ž<P>SOLUTION: A marker-supporting member 112 of the line-drawing marker 44 is switchable between an acting state to perform line-drawing work by turning the supporting member outward in right or left direction of the machine body and a housed state to house the marker-supporting member 112 by turning the member inward in right or left direction of the machine body; a visual confirmation arm 155 of the visual confirmation marker 46 is switchable between a visual confirmation state by turning the arm forward and a non-confirmation state to house the visual confirmation arm 155 by turning the arm backward; and the switching of the line-drawing marker 44 to the housed state and the switching of the visual confirmation marker 46 to the non-confirmation state are performed cooperatively with various operations in the gyration of the machine body by a cooperation mechanism. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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