SOWING MACHINE Russian patent published in 2020 - IPC A01C7/00 A01B73/02 

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to agricultural machine building, in particular, to seeders with a mechanism for folding of a coulter crossarm. Sowing machine comprises central frame, on both sides of which there are bearing and coulter crossarms, brackets, hydraulic cylinders, chassis. Bearing crossarms are hinged to the central frame. Some brackets are intended for attachment of the coulter crossarm to the bearing crossarm. Other brackets are intended for attachment of telescopic hydraulic cylinders. First brackets made of component parts pivotally connected to each other are mounted on bearing and coulter crossarms. One part of the first bracket is fixed on the bearing crossarm with possibility of movement along it. Second part of the first bracket is fixed on the coulter crossarm. First brackets on crossarms installed several pairs. Between the first brackets pair on the bearing crossarm there is the second movably fixed bracket made with holes in the lugs for hinged attachment of one of the ends of the telescopic hydraulic cylinder. On the coulter crossarm between the second components of the pair of the first brackets there is a third bracket made with lugs and holes for hinged attachment of the other end of the telescopic hydraulic cylinder and fixed on the coulter crossarm. Both parts of the first brackets have holes that are aligned when retainers are installed in them. Fourth brackets intended for hinged fastening of hydraulic cylinders located on both sides of central frame are fixed on central frame and on chassis, which are hinged to central frame. Fifth brackets intended for hinged fastening of hydraulic cylinders arranged on both sides of central frame along bearing crossarms are rigidly fixed to central frame and to bearing crossarm.

EFFECT: simplified design of the device for folding of the coulter crossarms, the durability of brackets of seed distributors, uniformity of supply of seeds.

1 cl, 14 dwg