A laboratory methodology to compare the performances of cutting bar suspension systems using a four posters test rig

Forage harvesting operations aim to satisfy contrasting requirements as the fast working and the contemporary need to preserve forage quality and soil porosity. On mowers, many progresses have been reached in order to improve working rate in particular thanks to: i) the development of cutting bars with rotating elements; ii) the increase of the working width and iii) the rise of forward speed. This last has been made possible thanks to the development of improved purpose-designed suspension systems that allow better stability at highest working speed, better ground adaptation and lower soil compaction, better uniformity in cutting height and lower forage soiling. The main goal of this paper is to show a proposal of laboratory test method to compare the behaviour of different trailed mower suspension systems by using a four posters test rig. The research was possible thanks to the funding of the Italian Ministry of Agriculture and Forestry Policies in the frame of the Si.Pre. (Safety and Performances) Project.