| 摘要 |
FIELD: machine building.SUBSTANCE: hydraulic system is designed to move a carriage directed to travel along a linear path by a support frame such as back digger or excavator. The system comprises two hydraulic cylinders 114, 116 each of which has a cylindrical casing and a piston rod. The cylindrical casings 114a and 116a of the two hydraulic cylinders are connected to each other, and the piston rod end of one hydraulic cylinder is connected to the support frame while the piston rod end of the other hydraulic cylinder is connected to the carriage. Two piston rods 114b and 116b protrude from the same side of the connected cylindrical casings; in every extreme position of the carriage 110, the piston rod 114b, 116b of one of the respective hydraulic cylinders is completely pulled out and the piston rod of the other hydraulic cylinder is completely retracted.EFFECT: improved design.4 cl, 5 dwg |
