FLOTATION FOR AGRICULTURAL IMPLEMENTS

摘要

An agricultural implement has front flotation wheels with a significantly increased diameter, increasing flotation and improving rolling characteristics, especially in soft soil conditions. The implement has a frame supported on front and rear wheels. Front flotation wheels are pivotally mounted to the frame about vertical axes. A hitch tongue is pivotally attached to the frame about a vertical hitch pivot axis. A wheel control mechanism connects the front flotation wheels to the hitch tongue, and is configured such that when the hitch tongue is in a neutral position the front flotation wheels roll in the operating direction, and pivoting the hitch tongue causes the front flotation wheels to pivot in the same direction.

主权项

1. An agricultural implement apparatus comprising:
a frame supported on rear wheels and at least one front flotation wheel for movement along the ground in an operating travel direction, and a plurality of ground engaging tools mounted on the frame substantially equally on each side of a frame axis extending parallel to the operating travel direction; wherein the at least one front flotation wheel is pivotally mounted to the frame about a substantially vertical wheel pivot axis; a hitch tongue having a rear end pivotally attached to a lateral mid-point of the frame about a substantially vertical hitch pivot axis located substantially on the frame axis, and having a front end adapted for pivotal attachment to a drawbar of a towing vehicle by a substantially vertical drawbar pin; a wheel control mechanism connecting the at least one front flotation wheel to the hitch tongue such that pivotal movement of the at least one front flotation wheel about the wheel pivot axis follows pivotal movement of the hitch tongue about the hitch pivot axis. the wheel control mechanism configured such that when the hitch tongue is in a neutral position aligned with the frame axis, the at least one front flotation wheel is oriented to roll in the operating travel direction, and pivoting the hitch tongue about the hitch pivot axis away from the neutral position causes the at least one front flotation wheel to pivot about the wheel pivot axis.