COMPOSITE OIL CYLINDER AND REFUSE COMPACTOR

摘要

A composite oil cylinder includes a cylinder body (1), a first-stage piston rod assembly (2) and a second-stage piston rod assembly (3), wherein the first-stage piston rod assembly (2) separates an inner cavity of the cylinder body (1) into a first-stage cylinder rodless cavity (6) and a first-stage cylinder rod cavity (14), and the second-stage piston rod assembly (3) separates an inner cavity of the first-stage piston rod assembly (2) into a second-stage cylinder rodless cavity (7) and a second-stage cylinder rod cavity (15). When the first-stage piston rod assembly (2) is in the extending and retracting strokes and the second-stage piston rod assembly (3) is in the position of retraction, the first-stage cylinder rodless cavity (6) doesn't communicate with the second-stage cylinder rodless cavity (7), and the first-stage cylinder rod cavity (14) doesn't communicate with the second-stage cylinder rod cavity (15). The first-stage cylinder rodless cavity (6) communicates with a first-stage independent oil inlet (Al), and the first-stage cylinder rod cavity (14) communicates with a first-stage independent oil outlet (B l); and the second-stage cylinder rodless cavity (7) communicates with a second-stage independent oil inlet (A2), and the second-stage cylinder rod cavity (15) communicates with a second-stage independent oil outlet (B2). A refuse compactor includes a refuse box (500), a compacting device (200), a driving device (300) and a push shovel (400), wherein the driving device (300) uses the composite oil cylinder. The refuse compactor using the composite oil cylinder has the advantages that the structure is simple and compact, the control accuracy is high, and the refuse compactor can be controlled in sections, and so on.