Hydraulic down pressure structure for an implement with...

Details Hydraulic down pressure structure for an implement with... Hydraulic down pressure structure for an implement with...

A - Human Necessities

01

B

A01B 63/114 (2006.01) A01C 5/06 (2006.01) A01C 7/20 (2006.01)

Patent

CA 2052138

An improved down pressure arrangement for an implement such as a multi-section grain drill having fixed-height section frames with corresponding gangs of opener assemblies. The opener assemblies of each gang are yieldingly biased downwardly by a spring and bracket structure operably connected to a rockshaft. One rockshaft per gang is provided, and each rockshaft is controlled by a single down pressure adjusting cylinder. The cylinders are connected in parallel and to a pressure regulator to provide adjustable and uniform average opener down pressure across the width of the drill for more constant opener depth in irregular ground conditions. Tension links connected to the bracket structure permit the opener assemblies to be raised from a ground-working position to a transport position.

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