Die Erfindung betrifft ein Mähdeck (10) mit einer ersten Mäheinheit (12) und einer zweiten Mäheinheit (14), wobei die zweite Mäheinheit (14) an der ersten Mäheinheit (12) mittels einer Doppelgelenkanordnung (16) hochklappbar befestigt ist.The mower (10) has cutter bars (12,14). The cutter bar (14) is fixed to mowing unit (12) by a double hinge arrangement (16). The cutter bar is driven by a traction mechanism. The driving gear and driven gear are located on cutter bars. The height of pivot axis of double joint is set, such that the strands of upper pivot axis of double joint are crossed diagonally, so that a direction component of strand is made to coincide with pivot axis.