DEVICE FOR CHOKERLESS SKIDDING Russian patent published in 2013 - IPC A01G23/00 B60P3/41 

FIELD: agriculture.

SUBSTANCE: device comprises a frame, a grapple with two tines and hydraulic cylinder of the open-side grapple mounted on a hinged system of the tractor. The hinged system of the tractor comprises an upper and a lower thrusts controlled by the hydraulic cylinder of the hinged mechanism of the tractor. The grapple by the double-hinged link is connected to one end of the two-arm lever pivotally mounted on the frame. Between the second free end of the two-arm lever and the frame an additional hydraulic cylinder is pivotally mounted. Between the frame and the two-arm lever the springs are mounted, fixing the two-arm lever in the neutral position and providing its turns from this position on both sides in the longitudinal plane under the influence of alternating loads from the side of the grapple. To prevent damage of the springs and the hydraulic cylinder in the extreme positions of the two-arm lever the restrictive pins are provided.

EFFECT: reduction of loads on the elements of structure of the hinged mechanism and the tractor, which enables to increase the reliability.

2 dwg