DEVICE FOR CHOKERLESS SKIDDING Russian patent published in 2016 - IPC A01G23/00 B60P3/41 

FIELD: timber industry.

SUBSTANCE: invention relates to machines used for skidding of timber in forestry. Device is mounted on tractor hinged system 5 and comprises frame 1 hinged on frame double-arm lever 12, double-hinged link with gripper 2 equipped with jaws 3 and hydraulic cylinder 4, additional hydraulic cylinders 15, 16 and limiting spring pin 17. Double-arm lever is connected with frame by ball joint 13 and 14 of guide bushing. Between frame and end of double-arm lever, on which there is double-hinged link with gripper 3, two additional hydraulic cylinders are hinged at angle of 45-90° to each other relative to longitudinal axis of device. Double-arm lever is provided with springs 16 and limiting pins 17, fixing it in neutral position in longitudinal horizontal plane.

EFFECT: with said arrangement, power consumption is reduced while logging forests, as well as load on structural elements of both device and attachment mechanism of tractor and that will allow to increase reliability.

1 cl, 4 dwg