VERY SMALL TURNING WORK MACHINE

PROBLEM TO BE SOLVED: To enable a very small turning work machine to execute excavation work in a work space small in height by preventing a backhoe unit from being damaged by collision against an obstacle in operation even if the obstacle or the like is present above the backhoe unit. SOLUTION: The very small turning work machine has a first boom 10 and a second boom 11 both constituting an approximately dog-legged shape posture in side view when the boom 10 is raised to the highest position. In this posture, the erection angle of the second boom 11 relative to the ground is set larger than the erection angle of the first boom 10, and further, in the state of raising the first boom 10 to the highest position, the arm supporting point 21 connecting a third boom 12 and an arm is set higher than the extension line of the axis of an upper rotation shaft 16 connecting the second boom 11 and the third boom 12. COPYRIGHT: (C)2007,JPO&INPIT