Patent ID: 6886277

Claim:
A small swivel type working vehicle comprising: a running device; a swivel base mounted on said running device to be swivelable about a vertical swivel axis; a driver's seat mounted on said swivel base; a control box mounted upright on a top surface of said swivel base forwardly of said driver's seat; a swing bracket pivotally supported by a flange unit provided at a front end of said swivel base to be swingable about a vertical pivotal axis; a boom pivotally supported to be swingable about a horizontal shaft by said swing bracket, said boom being in a form of a substantially hollow rectangular box; and a boom cylinder connected to said swing bracket at one end thereof and to said boom at the other end for swinging said boom, said boom cylinder being provided outside said boom to extend along a rear surface of the rectangular box, wherein said swing bracket is disposed above said running device, said vertical pivotal axis of said swing bracket being positioned rearwardly of a front roller axis of a crawler running device constituting said running device, a rear end of said swivel base substantially coincides with a rear roller axis of said crawler running device, a distance from said swivel axis of said swivel base to said vertical pivotal axis of said swing bracket is substantially the same as a distance from said swivel axis to a rear end of said swivel base, and said control box and said driver's seat define a walk-through space therebetween for allowing the driver to board and alight from the vehicle at opposite lateral sides of said swivel base.