CUTTER ASSEMBLY FOR TUNNEL BORING MACHINE WITH PRESSURE COMPENSATION
    1.
    发明公开
    CUTTER ASSEMBLY FOR TUNNEL BORING MACHINE WITH PRESSURE COMPENSATION 审中-公开
    ÜR R R ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH ICH

    公开(公告)号:EP2675997A2

    公开(公告)日:2013-12-25

    申请号:EP12749492.0

    申请日:2012-02-16

    IPC分类号: E21D9/06 E21D9/08

    摘要: A pressure-compensated cutter assembly for a tunnel boring machine includes a shaft, a cutter ring assembly rotatably mounted on the shaft, and first and second end retainers non-rotatably attached to the shaft. Rotary seal groups, immersed in lubricant, provide a moving seal between the rotating cutter ring assembly and the end retainers. A movable piston member is exposed to ambient pressures, and contacts the lubricant, such that increasing ambient pressure will increase the lubricant pressure, thereby keeping the pressure differential across the seal small. In one embodiment, the piston is a floating retainer portion. In another embodiment, the piston is an annular piston, and in another embodiment, the piston is a plurality of smaller pistons disposed in the first retainer.

    摘要翻译: 用于隧道掘进机的压力补偿切割器组件包括轴,可旋转地安装在轴上的切割环组件以及不可旋转地附接到轴的第一和第二端保持器。 浸在润滑剂中的旋转密封组在旋转的刀具环组件和端部保持器之间提供移动密封。 可移动活塞件暴露于环境压力下,并与润滑剂接触,从而增加环境压力将增加润滑剂压力,从而保持密封件两端的压力差小。 在一个实施例中,活塞是浮动保持器部分。 在另一个实施例中,活塞是环形活塞,在另一个实施例中,活塞是设置在第一保持器中的多个较小的活塞。