Cushion suspension system for agricultural boom

A - Human Necessities – 01 – B

Patent

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A01B 59/04 (2006.01) A01C 15/00 (2006.01) A01M 7/00 (2006.01)

Patent

CA 2131607

A cushion suspension system for coupling an agricultural tool to a vehicle includes a flexible frame which permits vertical movement of the tool relative to the vehicle while maintaining the tool laterally fixed relative to the vehicle to prevent side by-side oscillation. The flexible frame includes an air spring with an air filled bellows for providing vertical cushioning and a restoring force as the wheels of the vehicle encounter irregularities in the ground. Pressure within the air spring is adjustable to accommodate a range of agricultural tool sizes. The frame further includes a shock absorber for dampening vertical oscillation of the frame, with stops provided for limiting upward and downward displacement of the tool. The suspension system is particularly adapted for attaching an agricultural boom having a plurality of nozzles to a trailer-type sprayer.

Système de suspension-amortisseur servant à accoupler du matériel agricole à un véhicule; ce système comprend un cadre souple laissant au matériel agricole une liberté de mouvement vertical en regard du véhicule tout en maintenant le métériel fixé latéralement afin d'éviter tout mouvement oscillatoire Le cadre souple comprend un ressort pneumatique pourvu d'un soufflet rempli d'air qui assure un amortissage vertical et offre une force de rétablissement lorsque les roues de véhicule passent sur les irrégularités du sol. La pression du ressort pneumatique est réglable afin d'adapter le système à uyne gamme de matériel agricole de différente grosseur. Le cadre comprend égaleme un amortisseur pour amortir le mouvement oscillatoire vertical du cadre et des dispositifs de blocage pour limiter le mouvement ascendent et descendant du matériel. Le système de suspension est particulièrement adapté pour accoupler, à un pulvérisateur de type remorque, une rampe comportant plusieurs buses.

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