IMPLEMENT FRAME LEVELLING SYSTEM FOR AGRICULTURAL EQUIPMENT HAVING A LOWERED GROUND-WORKING MODE AND A RAISED TRANSPORT MODE

摘要

An agricultural implement provides improvements in ground-working implements having both a lowered ground-working mode and a raised transport mode wherein means are provided to offset the effects of the moment forces created in the working mode. A fluid circuit is connected to a fluid actuato r for controlling forces exerted thereby between a hitch member and the implement main frame and it is operable in a working mode to exert a resilient biasing force on the hitch member thus enabling pivotal floating motion of the hitch member while simultaneously countering force moments applied to the main frame by the ground-working tool. This system is also operable in a transpor t mode wherein the actuator exerts sufficient force between the hitch member and the forward end of the main frame as to assist in lifting and maintainin g the implement in a raised transport mode.