HYDRAULISCHER AUFZUG MIT INDIREKT WIRKENDEM ANTRIEB

摘要

Via a loose pulley (6) and a rope (3), a cylinder (8) drives a car with a total load (Q + F), and the cylinder (8) carries a counterweight to the value of 2(Q/2 + F). Furthermore, the cylinder (8) is guided along a piston rod (12) which is under prestress Q, is anchored in a foundation (14) and at the same time has a bore (16a and 16b) for supplying the hydraulic fluid. Due to the movement of the cylinder (8) along the piston rod under prestress, a smaller design of the piston rod than in the conventional arrangement with fixed cylinder and movable piston rod is obtained. Due to the counterweight to the value of 2(Q/2 + F), balancing and thus energy saving is achieved at average loading of the car (3) with Q/2. <IMAGE>