Patent ID: 11937546
Assignee: CNH INDUSTRIAL AMERICA LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC A  B | IPC A

Claim 13:
14. A self-propelled agricultural working machine comprising:
a feeder at a front of the machine configured to be moved up or down; and
a header that is detachably coupled to the front of the feeder, the header comprising:
a back wall;
two support and transport wheel assemblies on either side of the feeder, designated as front and rear wheel assemblies, the front and rear wheel assembly comprising an axle and two wheels attached at the two ends of the axle, the wheel assemblies being movable between a field position wherein the axle is essentially parallel to a longitudinal direction of the header and a transport position wherein the axle is transversal to the longitudinal direction; and
two actuating systems, each comprising a first plate, a hook-shaped arm, and a straight arm, the two actuating systems configured to move the wheel assemblies from the field position to the transport position and vice versa, the first plate element of each actuating system operatively coupled to the header back wall by the hook-shaped arm and the straight arm of the each actuating system, wherein the wheels of the wheel assemblies are pivotable relative to their respective axles and about axes which are transversal to the axles, in order to steer the wheel assemblies; and wherein:
the front wheel assembly comprises:
a pivotable base that is pivotably connected to a central location of the axle of the front wheel assembly, the pivotable base being pivotable about an essentially vertical axis, and optionally a deployable drawbar coupled to said pivotable base;
a first tie rod arrangement configured to transfer the pivotal position of the base to the wheels of the front wheel assembly; and
a first variable length actuator pivotably coupled to the axle of the front wheel assembly and to one of the wheels of the front wheel assembly;

the rear wheel assembly comprises:
a second tie rod arrangement configured to transfer the pivotal position of one rear wheel to the other rear wheel; and
a second variable length actuator pivotably coupled to the axle of the rear wheel assembly and to one of the wheels of the rear wheel assembly;

wherein the operation of the variable length actuators of the front and rear wheel assemblies is synchronized, so as to synchronize the pivotal positions of the wheels of the front and rear wheel assemblies.