公开(公告)号：US20170108016A1

公开(公告)日：2017-04-20

申请号：US15300581

申请日：2015-03-27

申请人： Caterpillar Global Mining Europe GmbH

发明人： Christian KNOBLICH ,  Lothar MARKOWSKI ,  Sabine FIGGE ,  Jaroslaw WERNER

IPC分类号： F15B15/14 ,  E21D15/51 ,  F15B15/16

CPC分类号： F15B15/1438 ,  E21D15/15 ,  E21D15/44 ,  E21D15/51 ,  E21D15/56 ,  F15B15/1461 ,  F15B15/16

摘要： A hydraulic cylinder is disclosed. The hydraulic cylinder may have an outer cylindrical tube including an open end, a first female threaded portion, and a second female threaded portion. The hydraulic cylinder may also have a movable element received in the outer cylindrical tube through the open end. Further, the hydraulic cylinder may have a sleeve holder engaged with the first female threaded portion to seal an annular space between the outer cylindrical tube and the movable element. The sleeve holder may have a first male threaded portion mating with the first female threaded portion. In addition, the hydraulic cylinder may have a locking ring engaged with the second female threaded portion to secure the sleeve holder to the outer cylindrical tube. The locking ring may have a second male threaded portion mating with the second female threaded portion.