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    Mobile lift crane with variable position counterweight
    2.
    发明公开
    Mobile lift crane with variable position counterweight 审中-公开
    带可变位置配重的移动式起重机

    公开(公告)号：EP2597066A1

    公开(公告)日：2013-05-29

    申请号：EP13155808.2

    申请日：2007-10-15

    申请人： Manitowoc Crane Companies, LLC

    发明人： Pech, David. J ,  Porubcansky, Kenneth. J

    IPC分类号： B66C23/76

    CPC分类号： B66C23/76

    摘要： A mobile lift crane (10) comprises a carbody (12) with moveable ground engaging members (14, 16), a rotating bed (20) rotatably connected to the carbody, a boom (22) pivotally mounted on a front portion of the rotating bed, with a hoist line (24) extending therefrom, and a mast (28) mounted at its first end on the rotating bed. The crane also includes a hydraulic cylinder (38) and a moveable counterweight unit (34) and is configured to perform a pick, move and set operation with a load, in which the moveable counterweight is moved toward and away from the front portion of the rotating bed by extending and retracting the hydraulic cylinder, but in which the counterweight is never supported by the ground other than indirectly by the ground engaging members on the carbody. This removes the need for a separate wagon and reduces the amount of ground preparation required.

    摘要翻译： 一种移动式起重机（10），包括具有可移动的地面接合构件（14,16）的车体（12），可旋转地连接到车体的旋转床（20），可枢转地安装在旋转的前部上的悬臂（22） 具有从其延伸的升降线（24）以及在其第一端处安装在旋转底座上的桅杆（28）。 该起重机还包括液压缸（38）和可移动的配重单元（34），并且被配置为利用负载执行拾取，移动和设定操作，其中可移动配重朝向和远离该负载的前部移动 通过伸缩液压缸来实现旋转床，但是除了通过车身上的地面接合构件间接地配重之外，配重不会由地面支撑。 这消除了对单独货车的需求，并减少了所需的地面准备量。