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

摘要

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.