Motor attachment for agricultural tractor - incorporates pre-sector which delays changes for reduction of gear speed to reduce wear

摘要

The motor attachment for an agricultural tractor used for lifting loads comprises a variable output pump and a hydraulic motor (5) coupled to an epicyclic reduction gear (7) which can be set at high or low speeds by a manual lever (16) When used by the operator, the lever actuates a cam (18) causing compression of a spring (22) which is released and changes the speed when approp. for the hydraulic motor. The operator can move the lever before the gears stop rotating, reducing wear on the reduction gears caused by premature engagement.