Penetrate a subassembly

The utility model discloses a penetrate a subassembly, including frame, screw assembly, oil motor and moving oil cylinder subassembly, oil motor and moving oil cylinder unit mount in the frame, screw assembly includes screw rod body, screw rod cover and non -return valve, the screw rod cover is fixed to be set up in the frame, be provided with the passageway in the screw rod cover, this internal one end of screw rod is inserted in the passageway, and the other end is connected with oily motor transmission, moving oil cylinder subassembly drive?screw body removes toward the screw rod cover is inside, the non -return valve cover is established on the screw rod body, the tip that the screw rod body was kept away from to the passageway is the convergent state, it still includes a tailboard and auxiliary oil cylinder, install in the frame tailboard slidable, rotationally install a jackshaft in the tailboard, the one end and the oily motor transmission of jackshaft are connected, and the other end is connected with