HYDRAULIC PROCESS AND CIRCUIT FOR SAVING ENERGY WHEN OPERATING A MANEUVERING CYLINDER ON A HYDRAULIC EXCAVATOR

摘要

P THE INVENTION CONCERNS A METHOD FOR SAVING ENERGY WHEN OPERATING A MANEUVERING CYLINDER ON A HYDRAULIC EXCAVATOR OR EXCAVATOR USING A HYDRAULIC CIRCUIT COMPRISING AT LEAST ONE PUMP GROUP, A COLLECTING GROUP AND A WORKING LIQUID DISPENSING BODY; THE HYDRAULIC CIRCUIT SHALL BE ARRANGED IN A WAY THAT THE WORKING LIQUID LEAVING UNDER PRESSURE FROM THE CYLINDER CHAMBER 2 LOCATED ON THE PISTON SIDE DURING A MOVEMENT OF LOWERING OF AN EQUIPMENT PART UNDER THE EFFECT OF THE EQUIPMENT WEIGHT IN THE CYLINDER CHAMBER 3 LOCATED ON THE ROD SIDE. /P