Patent ID: 6684537
Filing Date: 2004-02-03
Classification: E02F

Abstract:
An excavator, comprising:a traveling device; a swivel base supported by said traveling device, said swivel base having control valves; a swing bracket connected to said swivel base to be laterally pivotable about a vertical axis; an excavating implement supported on said swivel base by means of said swing bracket, said excavating implement including: a boom, said boom having a forked portion connected to said swing bracket; a boom cylinder for vertically moving said boom about a horizontal axis extending across said forked portion; an arm pivotally attached to a top end of said boom; an arm cylinder for swinging said arm; a bucket pivotally attached to a top end of said arm; and a bucket cylinder for driving said bucket to effect a scooping and dumping action; and a group of flexible hoses connected between said control valves and said boom, arm, and bucket cylinders for transmitting said pressure oil therebetween to supply and drain the pressure oil to/from said cylinders, respectively, said group of flexible hoses having a length absorbing portion disposed within said swivel base for absorbing variations in hose length occurring with vertical movement of said boom, wherein said forked portion defines a guide surface in a space surrounded by said forked portion, and said guide surface being inclined downward toward said swing bracket to guide said group of flexible hoses from said forked portion to said swing bracket.