公开(公告)号：US4635536A

公开(公告)日：1987-01-13

申请号：US734742

申请日：1985-05-14

申请人： Ming Liu ,  John F. Bowbin ,  Raymond L. Ghislain ,  Stephen K. McDaniel

发明人： Ming Liu ,  John F. Bowbin ,  Raymond L. Ghislain ,  Stephen K. McDaniel

IPC分类号： F15B15/26

CPC分类号： F15B15/261

摘要： Locking apparatus for a piston and cylinder device includes a locking plunger connected to the piston and disposed between the piston and an end cap of the piston and cylinder device. The locking plunger includes a sleeve which carries a plurality of radially movable ball bearings. As the piston is moved toward an extreme position of the device, the ball bearings contact a spring loaded locking plug disposed in the head of the device, thereby moving the plug away from a first position. The piston and locking plunger continue to move the locking plug away from the first position until the balls are aligned with a circumferential groove or channel in the head. At this point the locking plug is moved to the first position under spring force, in turn moving the ball bearings radially outward into engagement with the channel or groove. The piston and piston rod of the device are thereby locked in position in the absence of fluid pressure. The locking plug includes surfaces against which pressurized fluid acts at the beginning of a return stroke to move the plug away from the first position and release the ball bearings from the channel. The piston is thereby unlocked and is free to move toward the other extreme position of the device.

摘要翻译： 活塞和气缸装置的锁定装置包括连接到活塞并设置在活塞和活塞和气缸装置的端盖之间的锁定柱塞。 锁定柱塞包括承载多个可径向移动的滚珠轴承的套筒。 当活塞向装置的极限位置移动时，球轴承接触设置在装置的头部中的弹簧加载的锁定插头，从而将插头从第一位置移开。 活塞和锁定柱塞继续将锁定塞移动离开第一位置，直到球与头部中的周向凹槽或通道对准。 此时，锁定塞在弹簧力下移动到第一位置，从而径向向外移动球轴承以与通道或凹槽接合。 因此，在没有流体压力的情况下，装置的活塞和活塞杆被锁定就位。 锁定塞包括在返回行程开始时加压流体作用于其上的表面，以使塞子远离第一位置移动并从通道释放球轴承。 因此，活塞被解锁并且能够朝向装置的另一极限位置移动。

公开(公告)号：US4352318A

公开(公告)日：1982-10-05

申请号：US128357

申请日：1980-03-06

申请人： Abel E. Kolchinsky ,  John F. Bowbin ,  Wayne M. Davis

发明人： Abel E. Kolchinsky ,  John F. Bowbin ,  Wayne M. Davis

IPC分类号： F15B15/22

CPC分类号： F15B15/222

摘要： An expandable cushion plunger for use with a fluid pressure driven piston and cylinder device includes a cushion sleeve mounted on a piston rod in floating relation thereto, and having a skirt, the interior of which is exposed to the cushioning fluid within the cylinder. As the piston nears the end of its stroke, the sleeve begins to enter a fluid exit port, trapping fluid between the piston and the cylinder head, which will slow and cushion the piston travel as it approaches the cylinder head. As the sleeve continues to enter the fluid exit port, the pressure of the trapped fluid increases due to the smaller size of the annular orifice between the sleeve and the port as compared with the port size. The cushion sleeve may expand under influence of increased pressure, further restricting the flow of pressurized fluid through the annular orifice to provide smooth deceleration of the piston as it reaches the end of its stroke and comes to rest against the cylinder head without undesirable impact.

摘要翻译： 用于与流体压力驱动的活塞和气缸装置一起使用的可膨胀缓冲柱塞包括安装在与其浮动的活塞杆上的缓冲套筒，并且具有裙部，其内部暴露于气缸内的缓冲流体。 当活塞接近其行程结束时，套筒开始进入流体出口，在活塞和气缸盖之间捕获流体，当流体靠近气缸盖时，活塞将缓慢并缓冲活塞行程。 当套管继续进入流体出口时，与端口尺寸相比，由于套筒和端口之间的环形孔的尺寸较小，所以捕获的流体的压力增加。 缓冲套筒可以在增加的压力的影响下膨胀，进一步限制加压流体通过环形孔的流动，以在活塞到达其行程末端时平稳地减速，并且抵靠气缸盖静止，而不会产生不期望的冲击。

公开(公告)号：US4065852A

公开(公告)日：1978-01-03

申请号：US705946

申请日：1976-07-16

申请人： John F. Bowbin

发明人： John F. Bowbin

IPC分类号： F15B15/14 ,  F16F9/36 ,  F16J15/00 ,  F16J15/32 ,  F16C33/72

CPC分类号： F16F9/362 ,  F16J15/004 ,  F16J15/3212 ,  F16J15/3272

摘要： A hydraulic snubber device arranged for facilitated servicing of a secondary seal thereof. A bushing removably mounted to the head of the device cooperates therewith to retain a split annular seal element in sealed association with a piston rod extending outwardly therethrough. A bushing is movable on the rod sufficiently to expose the seal for selective removal and installation when desired. The snubber is adapted for use in a radioactive environment wherein the split seal may suffer degradation such as from radiation and permits the replacement of the seal without disconnecting elements connected to the end of the piston rod so as to provide minimum downtime in servicing the installation.

摘要翻译： 一种液压缓冲装置，其布置用于便于维修其二次密封。 可移除地安装到装置的头部的衬套与其配合，以将裂开的环形密封元件与从其向外延伸的活塞杆密封结合。 衬套可以充分地在杆上移动以暴露密封件，以便在需要时选择性地移除和安装。 缓冲器适用于放射性环境，其中分裂密封件可能遭受诸如辐射的降解，并允许更换密封件而不断开连接到活塞杆端部的元件，从而在维修设备时提供最小的停机时间。