FOLDING FRAME OF TOOL WITH WEIGHT TRANSFER Russian patent published in 2018 - IPC A01B73/04 

FIELD: agriculture.

SUBSTANCE: frame has seven sections in the position for use in the field and nine sections when it is folded. The frame design allows the frame having a width more than 27 metres to be folded into the transport position having a width less than eight metres and a height less than six metres. The tool comprises the hydraulic system to transfer the weight to the main or central frame section during folding and unfolding in order to increase the frame stability. The hydraulic system has one or more accumulators to minimize reducing the oil amount in the tractor tank, caused by extending the hydraulic cylinders of the tool.

EFFECT: time periods of the cycles of lifting and lowering the tool are minimized by means of providing a second auxiliary cylinder for lifting the main frame section, when the weight of the entire tool is on the main section, and enabling the use of a smaller cylinder to lift the main frame section in the position for use in the field for shorter time periods of the cycles of lifting and lowering the tool for turns in the field.

3 cl, 19 dwg