AGRICULTURAL MACHINE FRAME Russian patent published in 2019 - IPC A01B73/06 

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to the field of agricultural machine building. Frame of the agricultural machine consists of the middle part passing in lateral direction to the right and in lateral direction to the left from the vertical middle plane of the machine frame. On the right and left end of the middle part parallel to the middle plane, the corresponding hinged axis is located. On the right and left of the middle part, at least in each case, an additional right and left lateral part passes across the middle plane. Right and left side parts are connected with middle part with possibility of rotation around corresponding hinged axis. In the first, wide, working position both side parts are parallel to each other and perpendicular to the middle plane, and in the second narrower transport position perpendicular to the middle part and parallel to the middle plane. Each of right and left side parts has lever with outer end, passing at distance (a) from corresponding hinged axis. Corresponding levers of right and left side parts are pivotally connected at their outer end with hydraulic cylinder unit located across to middle plane. Hydraulic cylinder assembly consists of right and left piston unit pivotally connected with appropriate outer end of lever. Piston blocks are directed coaxially with possibility of limited displacement in cylinder sleeve and together with cylinder sleeve form hydraulic cylinder assembly. Lateral displacement of cylinder sleeve relative to middle plane is prevented by restricting device. Limiting device is made in form of at least one rod of Panar, pivotally connecting middle part on one side and cylinder sleeve on other side, or restricting device is made in form of thrust ledge passing parallel to middle plane and contacting or kinematically connected with thrust wing, preventing lateral movement of thrust ledge relative to middle plane and guide it parallel to middle plane.

EFFECT: creation of folding and compact frame.

8 cl, 4 dwg