Boom breakaway system
    1.
    发明申请
    Boom breakaway system 有权
    Boom分离系统

    公开(公告)号:US20050184175A1

    公开(公告)日:2005-08-25

    申请号:US10786689

    申请日:2004-02-25

    CPC分类号: A01M7/0078 A01M7/0053

    摘要: Foldable boom inner wings are attached to a boom center frame through a rocker attached to a breakaway hydraulic cylinder pressurized to full stroke and connected to an accumulator. When a wing impacts an object, the impact load is transmitted through the fold cylinder and rocker into the breakaway cylinder. As the breakaway cylinder retracts to allow the wing to pivot, pressure builds in the system in three stages. First pressure builds along an accumulator pressure curve until a relief valve in the hydraulic system actives to initiate the second stage wherein oil is dumped through the relief valve. Thereafter, pressure is again allowed to build along the same accumulator curve to absorb impact hydraulically before the cylinder reaches full stroke. The staged pressure buildup prevents boom momentum from gaining and loads from increasing above the strength of the overall structure.

    摘要翻译: 可折叠起重臂内翼通过连接到加压到全行程的分离式液压缸的摇臂连接到起重臂中心架,并连接到蓄能器。 当机翼撞击物体时,冲击载荷通过折叠缸和摇杆传递到分离缸中。 当分离式气缸缩回以允许机翼枢转时,压力在三个阶段内建立在系统中。 第一压力沿着蓄能器压力曲线建立,直到液压系统中的安全阀活动以启动第二阶段,其中油通过安全阀倾倒。 此后,再次允许压力沿着相同的蓄能器曲线建立,以在气缸达到全行程之前液压吸收冲击。 分段压力累积可以防止起重臂动量的增加和负载从整体结构的强度增加。