公开(公告)号：WO2016028742A1

公开(公告)日：2016-02-25

申请号：PCT/US2015/045635

申请日：2015-08-18

Applicant: CROWN EQUIPMENT CORPORATION

Inventor： OKROY, Martin ,  KREMER, Jason ,  WENTE, Lee ,  GILLILAND, Kevin, A.

IPC: B66F9/22 ,  F15B15/14 ,  F16F9/49

CPC classification number: B66F9/22 ,  F15B15/1461 ,  F15B15/227 ,  F16J15/16

Abstract: An actuator may comprise: cylinder structure, ram structure and a cushioning seal. The cylinder structure may comprise a cylinder tube, a cylinder base and a cylinder cap. The ram structure is slidably mounted within a cylinder structure bore and defines with the cylinder structure a gap therebetween. The ram structure may comprise fluid passageway structure for defining a path for fluid to move internally through the ram structure. The path may communicate with an outlet in a sidewall of the ram structure. The cushioning seal may be located between the ram structure and the cylinder structure and engage the ram structure and the cylinder cap during ram structure extension such that the seal substantially closes off a first portion of the gap extending from the seal toward the cylinder structure outer open end. The cushioning seal may be moved during ram structure retraction in a direction of ram structure retraction such that fluid flowing out of the ram structure sidewall outlet when the outlet is in the gap first portion flows between the seal and the cap.

Abstract translation: 致动器可以包括：气缸结构，压头结构和缓冲密封件。 气缸结构可以包括气缸管，气缸底座和气缸盖。 柱塞结构可滑动地安装在气缸结构孔内并且与气缸结构限定其间的间隙。 压头结构可以包括流体通道结构，用于限定用于流体在内部移动通过压头结构的路径。 路径可与压头结构的侧壁中的出口连通。 缓冲密封件可以位于压头结构和气缸结构之间，并且在压头结构延伸期间与压头结构和气缸盖接合，使得密封件基本上封闭从密封件延伸到气缸结构外部开口的间隙的第一部分 结束。 缓冲密封件可以在压头结构缩回期间在压头结构缩回的方向上移动，使得当出口处于间隙第一部分时流出压头结构侧壁出口的流体在密封件和盖之间流动。