公开(公告)号：US07237627B2

公开(公告)日：2007-07-03

申请号：US10948664

申请日：2004-09-23

申请人： Lance T. Richman ,  Chris Edward Cawthorne ,  Kirk A. Norris ,  Robert H. Slaughter, Jr.

发明人： Lance T. Richman ,  Chris Edward Cawthorne ,  Kirk A. Norris ,  Robert H. Slaughter, Jr.

IPC分类号： E21B10/00 ,  E21B10/24

CPC分类号： E21B10/24

摘要： Methods and apparatus for maintaining lubrication of rolling cone cutters mounted on journal pins. Embodiments comprise a rotating cone disposed on a journal pin and forming a journal gap there between. A cylindrical journal sleeve is disposed in the journal gap. The journal sleeve has a longitudinal gap forming opposing end portions, which are continuously contoured. A lubrication port is disposed in the journal pin and in fluid communication with a lubrication supply. The lubrication port has an outlet located in a recess in the journal gap. Each end of the recess comprises a transitioning surface extending between the bottom of the recess and the outer surface of the journal pin to prevent sharp transitions. In certain embodiments, the journal pin may comprise two or more lubrication ports, each located in a recess with transitioning surfaces.

摘要翻译： 用于保持安装在轴颈销上的滚动锥形切割机的润滑方法和设备。 实施例包括设置在轴颈销上并在其间形成轴颈间隙的旋转锥体。 圆柱形轴颈套筒设置在轴颈间隙中。 轴颈套筒具有形成相对端部的纵向间隙，它们是连续成型的。 润滑口设置在轴颈销中并与润滑油流体连通。 润滑口具有位于轴颈间隙中的凹部中的出口。 凹槽的每个端部包括在凹部的底部和轴颈销的外表面之间延伸的过渡表面，以防止尖锐的过渡。 在某些实施例中，轴颈销可以包括两个或多个润滑端口，每个润滑端口位于具有过渡表面的凹部中。