Farm tractor with sprung rear axle - has sliding component acting between axle and chassis controlling lifting system

摘要

The farm tractor with a sprung rear axle has a rear implement linkage comprising bottom and one top links lifted hydraulically. They act together with a control ram acting on a lifting shaft whose arms are coupled by lifting struts to the bottom links. A sliding component (18) attached to the rear axle (3) acts between it and the chassis, and regulates the control system (23) so as to lift or lower the bottom links (4,4'). Dependent on the position of the latter, the system is returned to the starting position. The sliding component can be a wedge (17), acting between a protrusion (19) on the lifting shaft (10) and a sliding control bar (21) coupled to the control system by an actual value lever (22).