ANORDNING FOR SVENGNING AV EN MASKINENHET FORBI ETT DODLEGE

摘要

A DEVICE FOR TURNING A MACHINE UNIT PAST A DEAD CENTER An arrangement in machines comprising a machine unit which is turnable about an axis and a hydraulic motor so arranged and coupled to the turnable machine unit that the point in which the hydraulic motor is coupled to the machine unit passes a dead center when rotating said machine unit from a swing in one sense of rotation to a swing in the opposite sense of rotation about said axis. Means are provided and adapted, when actuated by a limit position sensing device sensing said dead center, to reverse the direction of flow of pressurized fluid between the hydraulic motor and a source of pressurized fluid or a tank for such fluid.