Row marker for an agricultural machine

摘要

The track marker for agricultural machines comprises a cross-beam with swiveling end sections, on which earthworking tools are mounted. These are operated by hydraulic cylinders (7), each of which has a hydraulic line (12, 13) connected to either end and a third line (14) connected at the center. The central line and one of the end lines on each cylinder are connected to a 3/2-way valve (15) which has a line (17) connecting it to a control valve (18), to which the other two end lines are also connected.