TRACTOR END LOADER Russian patent published in 2003 - IPC

FIELD: timber industry. SUBSTANCE: invention is designed for lifting and lowering long-cut loads, such as full length logs and tree trunks and it can be used in other industries where handling of long-cut loads is required. Proposed tractor end loader contains base machine with gripper, frame hinge mounted on base installed on machine body, hydraulic drive with hydraulic for turning frame relative to base and base with frame relative to base machine body. Torque of first hydraulic cylinders exceeds torque of second ones. With frame being turned relative to base, angle of turning between axis of frame and horizontal passing through hinge joint of frame with base is from 50 deg to 85 deg. Piston spaces of hydraulic cylinders providing turning of base with frame relative to base machine body have throttling devices. EFFECT: smooth transfer of load from assembling position into unloading position and decrease of dynamic loads acting onto mounted equipment and base machine. 1 dwg