Patent ID: 8851209

Claim:
A working vehicle comprising: a travel machine body which mounts an engine thereon; a track frame which is provided in a lower portion of the travel machine body; and a travel crawler which is installed to the track frame via a drive wheel body and a driven wheel body; wherein the track frame is structured such that a pair of steel plate bodies are detachably fastened by a fastening member, wide surfaces of the steel plate bodies being faced to each other; wherein a link support body is attached to a rear axle case which transmits a rotary power to the drive wheel body, and the track frame is coupled to the link support body via a pair of front and rear link members so as to be capable of oscillating forward and backward; wherein the driven wheel body is constructed by a pair of front and rear driven wheel bodies, and a lower end side of the rear link member is rotatably pivoted to a rotary support shaft of the rear driven wheel body; wherein the link support body is attached to the laterally outermost side portion of the rear axle case; and wherein a lower link attaching pin is provided for pivoting a base end side of a lower link arranged in the rear portion of the travel machine body and is extended outward in a lateral direction, one end side of the lower link attaching pin is detachably supported to a transmission case, and the other end side thereof is detachably supported to the link support body.