Steering arrangement for an off-highway articulated vehicle

Details Steering arrangement for an off-highway articulated vehicle Steering arrangement for an off-highway articulated vehicle

B - Operations, Transporting

62

D

280/126

B62D 53/02 (2006.01) A01D 67/00 (2006.01)

Patent

CA 1199658

STEERING ARRANGEMENT FOR AN OFF-HIGHWAY ARTICULATED VEHICLE Abstract of the Disclosure In an articulated combine, front and rear bogies are connected by spaced-apart upper and lower links. The upper link permits relative lateral movement between the bogies due to oscillation about a longitudinal axis. At the lower link, a rigid tongue of the rear bogie is connected to the front bogie by a ball hitch. Steering of the vehicle is through a pair of hydraulic cylinders controlled in part by a feedback cylinder. The steering cylinders are connected together to the rear bogie, at a common ball joint. All other connections of the hydraulic cylinders are ball and socket type and their effective pivot centers define respective transverse (kneel) and longitudinal (oscillation) axes, intersecting at the ball hitch. Forward connections of the steering cylinders and one end of the feedback cylinder lie on the kneel axis. The common rearward steering cylinder connection and the connection of the other end of the feedback cylinder lie on the oscillation axis. This arrangement isolates the steering system from oscillation and tipping movement of one bogie relative to the other in the sense that such movement, by itself, does not directly impose length changes or axial loading in the steering system cylinders.

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