Concurrent Engineering Measurement: Software, Database and Data Warehouse Engineering

An attachment for agricultural machines includes a frame having a leading and trailing portion, a first soil-treating unit located at the leading portion of the frame and a second soil-treating unit located at the trailing portion of the frame. Between the first unit and the second unit there is located on the frame wheels for supporting the frame when an agricultural machine provided with the attachment moves along a road. The wheels are displaceable relative to the frame between a first position in which the wheels engage the ground and a second position in which the wheels do not engage the ground. The frame is so coupled to a lifting device of the agricultural machine that, when the wheels are in the second position, the trailing portion of the frame is supported on the ground by the second soil-treating unit.