Dynamic compactor and oriented lifting mechanism

The invention discloses a dynamic compactor and an oriented lifting mechanism. The lifting mechanism comprises an oil cylinder, a fixed pulley group, a movable pulley group, a guide rail and an oriented moving member, wherein the guide rail is fixed; the oriented moving member is limited on the guide rail and can move along the guide rail; and the oriented moving member is connected to the movable pulley group and/or the oil cylinder. The dynamic compactor lifting mechanism can support and limit the movable pulley group efficiently, and has the advantages of high reliability, good maintainability, easy implementation, good stability and the like.