FIELD: agriculture.
SUBSTANCE: group of inventions relates to a hinge joint of the frame of agricultural tool and to agricultural tool with such a hinge joint. The hinge joint comprises the means forming a working axis of rotation of the second section of the frame when it is in operating position relative to the first frame section, the means forming the axis of rotation for folding and unfolding the second section of the frame between the operating position and the position for transportation, and a rotation plate. The rotation plate is connected to the first section of the frame by the first pin forming a working axis of rotation, and the second section of the frame by the second pin forming an axis of rotation for folding. The agricultural tool comprising the said hinge joint additionally comprises a slot and a pin connection between the second section of the frame and the rotation plate. And the slot and the pin connection provide rotation of the second section of the frame relative to the first section of the frame when in the operative position.
EFFECT: hinge joint enables the sectional drill during operation to track the contour of the ground and to fold during transportation.
15 cl, 10 dwg
