SUSPENSION SYSTEM FOR A MOWER UNIT

摘要

A mower suspension system for tractively coupling a rotary mower unit beneath the belly or main frame of a tractor. The mower suspension system is basically comprised of a generally parallel four bar linkage arrangement including a front draft linkage interconnecting a front pivotal axle of the tractor with a front portion of the mower unit and a rear lift link pivotally interconnecting an intermediate portion of the tractor chassis structure with a rear portion of the mower unit. Further provided is a ball joint attaching assembly within the rear lift linkage structure which enables the mower unit to tilt from side to side in response to movement over ground irregularities of ground engaging rollers disposed rearwardly on the mower unit and the front wheels, and yet maintain the mower unit in a plane generally parallel to the chassis when the axle and associated front wheels are disposed on generally level ground terrain.