公开(公告)号：US08783786B2

公开(公告)日：2014-07-22

申请号：US13397997

申请日：2012-02-16

Applicant: Aaron J. Shanahan ,  Stephen M. Smading ,  Timothy A. Lang ,  Zachary J. Box ,  Brian B. Khalighi ,  Brad D. Grothen ,  Carl E. Lenaburg ,  Jay M. McNeeley ,  Shinichi Konda

Inventor： Aaron J. Shanahan ,  Stephen M. Smading ,  Timothy A. Lang ,  Zachary J. Box ,  Brian B. Khalighi ,  Brad D. Grothen ,  Carl E. Lenaburg ,  Jay M. McNeeley ,  Shinichi Konda

IPC: E21D9/10

CPC classification number: E21D9/104 ,  E21B10/10 ,  E21B10/22

Abstract: 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.

Abstract translation: 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刀环组件和末端保持器之间提供移动密封。 可移动活塞构件暴露于环境压力并接触润滑剂，使得增加的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。

公开(公告)号：US20120212034A1

公开(公告)日：2012-08-23

申请号：US13397997

申请日：2012-02-16

Applicant: Aaron J. Shanahan ,  Stephen M. Smading ,  Timothy A. Lang ,  Zachary J. Box ,  Brian B. Khalighi ,  Brad D. Grothen ,  Carl E. Lenaburg ,  Jay M. McNeeley ,  Shinichi Konda

Inventor： Aaron J. Shanahan ,  Stephen M. Smading ,  Timothy A. Lang ,  Zachary J. Box ,  Brian B. Khalighi ,  Brad D. Grothen ,  Carl E. Lenaburg ,  Jay M. McNeeley ,  Shinichi Konda

IPC: E21D9/10

CPC classification number: E21D9/104 ,  E21B10/10 ,  E21B10/22

Abstract: 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.

Abstract translation: 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刀环组件和末端保持器之间提供移动密封。 可移动活塞构件暴露于环境压力并接触润滑剂，使得增加的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。