Suspension device for agricultural sprayer boom used on e.g. support and lifting system of tractor, has springs provided between stop screws of intermediate and suspended frames to limit displacement of suspended frame
The device has an intermediate frame (CI) connected to a base frame (CB) by its pivot (17), and a suspended frame (CS) connected to the intermediate frame by pivot bearings (531a, 531b). A hydraulic slope adjusting and damping device (20) connects the intermediate and base frames to adjust a slope around the pivot and/or to dampen pivoting movement of the intermediate frame relative to the base frame. Springs are provided between stop screws (443a, 443b) of the intermediate and suspended frames to limit displacement of the suspended frame relative to the intermediate frame.Dispositif de suspension de rampe comprenant un cadre de base (CB) porté par le moyen de transport avec un pivot (17) recevant un cadre intermédiaire (CI) ayant deux paliers latéraux (42a,b) portant des biellettes (60a,b) et des appuis (442a,b) pour recevoir un cadre suspendu (CS) portant la rampe (2) relié par des articulations (531a,b) aux biellettes et aux appuis par des montages à ressorts (46a,b, 47a,b). Un dispositif hydraulique de réglage, d'inclinaison et d'amortissement (20) relie le cadre intermédiaire (CI) au cadre de base (CB) pour amortir les oscillations et/ou régler l'inclinaison de la rampe.
