LEGGED MOVABLE TYPE WORKING MACHINE

PURPOSE:To enable a working machine to move easily to arbitrary places by providing three or more working spuds which can be moved vertically and back and forth and three or more auxiliary spuds which can be moved vertically and circumferentially. CONSTITUTION:Four working spuds 1a are provided in a vertically and back and forth movable manner through an oil-pressure cylinder 3a for vertical movement and an oil-pressure cylinder 4 for horizontal movement near the four corners of a flat structure 10 for dredger, etc. Three auxiliary spuds 1b are also provided in a vertically and circumferentially movable manner through an oil-pressure cylinder 3b for vertical movement and a driver 6 for slewing for the central slewing circuit 5 of the structure 10. The auxiliary(working) spud 1b(1a) is lowered to support the structure 10, and the working(auxiliary) spud 1a(1b) is moved back and forth(circumferentially) to permit the structure 10 to move(turn) back and forth(circumferentially).