TOOL FRAME WITH AUXILIARY LIFTING CYLINDERS OF MAIN SECTION Russian patent published in 2017 - IPC A01B73/04 A01B63/22 

FIELD: agriculture.

SUBSTANCE: folding tool frame has seven sections in position for use in the field and nine sections in the folded position. The frame has a width of more than 27 meters. In the transport folded position, the frame width is less than eight meters, and its height is less than six meters. The hydraulic system is used to transfer the mass to the main or central section of the frame during folding and unfolding to increase the stability of the frame. The hydraulic system uses one or more accumulators to minimize the reduction in the amount of oil in the tractor tank caused by the extension of the hydraulic cylinders of the tool. The periods of the tool lifting and lowering cycles are minimized by providing the second auxiliary cylinder for lifting the main frame section when the mass of the entire tool is on the main section, and by enabling the use of a smaller cylinder to lift the main frame section in the position to use cycles of lifting and lowering the tool for turns in the field for shorter time periods.

EFFECT: increased operating width of the tool frame, possibility of folding the tool into a smaller configuration for transportation.

6 cl, 19 dwg