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    • 8. 发明申请
    • SLEEVE/LINER ASSEMBLY AND HYDRAULIC HAMMER USING SAME
    • SLEEVE / LINER组装和使用相同的液压锤
    • WO2012075214A1
    • 2012-06-07
    • PCT/US2011/062750
    • 2011-12-01
    • CATERPILLAR INC.TEIPEL, Blake R.PILLERS II, Lauritz P.
    • TEIPEL, Blake R.PILLERS II, Lauritz P.
    • B25D9/12B25D9/18B25D9/20
    • B25D17/06B25D9/12B25D9/20B25D2217/0019B25D2250/231
    • A hydraulic hammer (10) includes a powercell housing (11) that defines a hydraulic inlet (12) and a hydraulic outlet (13). A machine mount (20) that defines a plurality of pin receiving bores (21) is attached to the powercell housing (11). A work tool (30) is partially received in, and movable with respect to, the powercell housing (11). A switching spool valve member (40) is positioned in the powercell housing (11) and is movable between a first position and a second position, and includes a control hydraulic surface (41). A sleeve/liner assembly (50) is positioned in the powercell housing (11) and defines a centerline (51). A piston (70) with a plurality of hydraulic surfaces is positioned in the sleeve/liner assembly (50) and is movable along the centerline (51) between a first position in contact with the work tool (30) and a second position out of contact with the work tool (30). The control hydraulic surface (41) of the switching spool valve member (40) is exposed to fluid pressure in a switching passage (91), which includes a segment defined by the sleeve/liner assembly (50).
    • 液压锤(10)包括限定液压入口(12)和液压出口(13)的动力单元壳体(11)。 限定多个销接收孔(21)的机器安装件(20)附接到电力单元壳体(11)。 工作工具(30)被部分地接收在动力单元壳体(11)中并可移动。 切换滑阀构件(40)定位在动力单元壳体(11)中并且可在第一位置和第二位置之间移动,并且包括控制液压面(41)。 套筒/衬套组件(50)定位在动力单元壳体(11)中并且限定中心线(51)。 具有多个液压表面的活塞(70)定位在套筒/衬套组件(50)中,并且可在与工作工具(30)接触的第一位置和第二位置之间沿中心线(51)移动 与工作工具(30)接触。 开关滑阀构件(40)的控制液压表面(41)在包括由套筒/衬套组件(50)限定的段的切换通道(91)中暴露于流体压力。