A Lifting mechanism for farm Tools implemented an agricultural cultivator or similar

摘要

A row crop cultivator including an elongated toolbar adapted for attachment to a tractor three-point hitch and a plurality of cultivator rigs pivotally connected to the toolbar in spaced locations by upper and lower links. A pair of lift bars are pivotally mounted on the toolbar and extend beneath the upper links for the cultivator rigs and a pair of hydraulic cylinders are operatively connected between the toolbar and lift bars to individually or simultaneously move the lift bars about the pivotal connections with the toolbar. When the lift bars are pivoted upwardly, they engage the upper links and raise the cultivator rigs independently of any movement of the toolbar. Coil springs are tensioned between the upper links and the lift bars so that when the lift bars are pivoted downwardly, the springs are tensioned to provide a downward bias on the rigs.