APPARATUS FOR ATTACHING AGRICULTURAL TOOLS TO TRACTOR Russian patent published in 2000 - IPC

FIELD: agricultural engineering. SUBSTANCE: apparatus has kinematic unit equipped with two rear pivot joints for securing two lower tie-rods to this unit. Tie-rods are adapted to be connected to agricultural tool. Apparatus is further provided with at least one front pivot joint, control drive with actuating mechanism for regulating position of apparatus, lifting mechanism, and upper tie-rod to be joined to agricultural tool. When in operating position, kinematic unit is positioned in horizontal plane. Difference between lower tie-rod convergence angle and angle defined by straight lines extending through pivot joints of kinematic unit oriented with its apex toward tractor is within the range of minus 40 deg to plus 8 deg. Apparatus provides steady advancement of tractor with agricultural tool, such as plow. EFFECT: increased efficiency and enhanced reliability in operation. 4 cl, 13 dwg