초록 ▼

A self-propelled farm implement has independent front and rear, wheel supported frames articulated therebetween for execution of turns by operator steering of the front frame from within a cab that is, in turn, mounted on the front frame. The rear frame carries a crop receiving bin which, except for

A self-propelled farm implement has independent front and rear, wheel supported frames articulated therebetween for execution of turns by operator steering of the front frame from within a cab that is, in turn, mounted on the front frame. The rear frame carries a crop receiving bin which, except for my oscillator limit incorporated in the combination, would be engaged by the cab under certain unlevel ground conditions, causing substantial damage. The front frame is tiltable about a fore and aft axis within a range defined by interengageable stops between the front frame and its coupling link. The stops on the front link are in the form of pivoted members which abut lugs on the rear frame causing the members to swing about their pivots during turning movements. The effect is to progressively limit the extent of tilt as full turns are approached to prevent cab-bin interengagement regardless of the nature of ground contour as the vehicle is steered off a straight path of travel. In the event, intermediate the turning movements, the front frame has reached its maximum tilt, further turning is precluded which also prevents damage to equipment carried by the frames.

대표청구항 ▼

In a mobile vehicle, a pair of independent frames each provided with a wheel and axle assembly in supporting relationship thereto; means interconnecting the frames for articulation relatively about a normally upright axis; steering means for effecting turning movement of one of the frames about said

In a mobile vehicle, a pair of independent frames each provided with a wheel and axle assembly in supporting relationship thereto; means interconnecting the frames for articulation relatively about a normally upright axis; steering means for effecting turning movement of one of the frames about said axis; means effecting oscillatory movement of said one frame relative to the other frame about a normally horizontal axis extending fore and aft of the vehicle, permitting tilting of said one frame in opposite directions over uneven terrain; means limiting the extent of said tilting in both directions and in all steered positions of said one frame regardless of ground contour; and means for progressively decreasing said extent of tilting in both directions as the one frame is turned a predetermined distance to the left or to the right.