Spreading attachment for tractor, comprising pressurized rubber spring element used for adjustment of height according to substance to be spread

摘要

The height (6) appropriate for spreading a particular substance like fertilizer or lime, is controlled by a sensor (3), positioned between the frame and the spring element (2) attached to the axle, which is adjusted infinitely by increasing or reducing pressure according to the obtained data. An electronic control system (11, 12) maintains the safe positioning of the frame. When attached to a tractor with a tow bar (9) adjustable in height the output angle (5) can also be varied.