专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5669739A Prestressing of mine props 失效
标题翻译：预防我的道具
公开(公告)号：US5669739A
公开(公告)日：1997-09-23
申请号：US586049
申请日：1996-01-16
申请人： Graham Heath Clarke
发明人： Graham Heath Clarke
IPC分类号： E21D15/30 , E21D15/51 , E21D15/32
CPC分类号： E21D15/306 , E21D15/512
摘要： The mine prop prestressing device (10) has a tube (12), a cup-shaped member (14) inside the tube which has a base (18) and a cylindrical side wall (20) fixed internally to the wall of the tube. A counter-member is also fixed to the tube in opposition to the cup-shaped member, and a valved inlet leads through the wall of the tube for the purpose of introducing a pressurised fluid into the tube between the base of the cup-shaped member and the counter-member. If the fluid is under sufficiently high pressure, the base of the cup-shaped member and the counter member are deformed apart from one another. The counter-member is typically in the form of an identical or similar cup-shaped member (14). The device (10) is a component part of a mine prop which includes a plunger (36, 38) inserted slidably into the tube so as to locate in a cup-shaped member. When pressurised fluid is introduced into the tube, the plunger is driven telescopically out of the tube.
摘要翻译：矿井预应力装置（10）具有管（12），管内部的杯状构件（14），其具有底部（18）和固定在管的壁上的圆柱形侧壁（20）。对置构件也与杯形构件相对地固定在管上，并且带阀的入口通过管的壁引导加压流体到杯状构件的基部之间的管中和对手。如果流体处于足够高的压力下，杯状构件和对置构件的基部彼此分开变形。相对构件通常为相同或相似的杯形构件（14）的形式。装置（10）是矿井道的组成部分，其包括可滑动地插入管中以便定位在杯形构件中的柱塞（36,38）。当加压流体被引入管中时，柱塞被可伸缩地驱动出管。

IPRDB

热门服务

关于我们

友情链接

联系方式