TRACTOR END LOADER Russian patent published in 2003 - IPC

FIELD: timber industry. SUBSTANCE: invention is designed for handling long-cut loads, for instance, logs and long-tailed timber, and it can be used in other branches of industry where loading of long-cut members is required. Proposed tractor end loader contains base machine, frame equipment with gripper and higher-secured on base installed on body of base machine, and hydraulic drive. Hydraulic cylinders designed for turning frame relative to base and hydraulic cylinders designed for truncated base with frame relative to base machine body have common pressure and drain main lines and they operate in different directions. When lifting load from collecting position into unloading position, torque of hydraulic cylinders designed for turning frame relative to base is greater than torque of hydraulic cylinders designed for turning base with frame relative to base machine body. EFFECT: simplified design of hydraulic drive and its control system, reduced dynamic loads acting onto mounted equipment and loader base machine. 1 dwg