公开(公告)号：US5277264A

公开(公告)日：1994-01-11

申请号：US989856

申请日：1992-12-14

申请人： Kyo-Myung Song ,  Myeong-Soo Jang

发明人： Kyo-Myung Song ,  Myeong-Soo Jang

IPC分类号： B25D9/12 ,  B25D9/14 ,  B25D9/16 ,  E02D7/10 ,  E21B1/26 ,  E21B1/30 ,  E21B4/14 ,  E21C37/24 ,  F15B11/15 ,  E21B4/06 ,  E21B11/02

CPC分类号： B25D9/145 ,  B25D9/12 ,  E02D7/10 ,  E21B4/14

摘要： A hydropneumatic hammer operated by a reciprocal action of a percussive piston and a directional control valve, comprising a piston having steps of larger and smaller diameters separating the interior of a piston chamber intended for admitting said piston into four chambers, a first chamber communicating by way of a first passage with a pressure line, the second chamber being defined by a step of middle portion of said piston connecting to a discharge line, the third one being defined by a step formed on an upper portion of said piston, and the fourth one defining a gas chamber separated from the third chamber by a seal retainer, a valve chamber intended for admitting a valve system, being arranged parallel to said piston chamber, a passage for converting a pressure line of fluid or oil into a discharge line and connecting said valve chamber with the second chamber, a passage for returning an exhausted fluid or oil being converted into depressurized condition after working, a first passage intened for delivering a fluid under pressure from said inlet port into the first chamber, a second passage intended for delivering a fluid under pressure from said inlet port into said valve chamber and self-pressurable chamber, and a passage intended for communicating said valve chamber with the third chamber.

摘要翻译： 一种由冲击活塞和方向控制阀的相互作用操作的液压气动锤，包括具有较大和较小直径的步骤的活塞，所述活塞具有将用于将所述活塞承认为四个腔室的活塞室的内部分开的第一室， 具有压力线的第一通道，所述第二室由所述活塞的中间部分连接到排出管线的步骤限定，所述第三通道由形成在所述活塞的上部上的台阶限定，第四通道 通过密封保持器限定与第三室分离的气体室，用于允许平行于所述活塞室布置的阀系统的阀室，用于将流体或油的压力线转换成排出管线并将所述 具有第二室的阀室，用于将排出的流体或油返回到工作后转化为减压状态的通道，第一pas 圣人打算将压力下的流体从所述入口输送到第一室中，第二通道用于将压力下的流体从所述入口输送到所述阀室和自加压室，以及用于将所述阀室连通的通道 与第三个房间。