公开(公告)号：US4390308A

公开(公告)日：1983-06-28

申请号：US300826

申请日：1981-09-10

申请人： Kunibert Becker ,  Rudiger Kirchbrucher ,  Gunter Lagodka ,  Klaus-Dieter Pohlmann

发明人： Kunibert Becker ,  Rudiger Kirchbrucher ,  Gunter Lagodka ,  Klaus-Dieter Pohlmann

IPC分类号： E21D23/04 ,  E21D23/08 ,  E21D23/00

CPC分类号： E21D23/081 ,  E21D23/0409

摘要： A roof support assembly is constituted by a plurality of roof support units and a plurality of advance mechanisms. The units are positioned side-by-side along a longwall face of a mineral mining working. Each advance mechanism comprises a pair of generally parallel hydraulic advance rams and a guide rod system constituted by a pair of resilient generally parallel guide rods. Each guide rod system is attached, at one end, to a conveyor extending along the longwall face. The other end of each guide rod of each advance mechanism is attached to a respective slide piece which is slidably guided on a respective guide rail which is attached to a respective floor girder of a roof support unit. The slide pieces are attached to the piston rods of the hydraulic advance rams. The cylinders of the hydraulic advance rams are attached to one of the adjacent floor girders, and the slide piece attached to the piston rod of hydraulic advance ram is attached to the guide rod system. The slide piece attached to the piston rod of the hydraulic advance ram is attached to the other floor girder.

摘要翻译： 屋顶支撑组件由多个屋顶支撑单元和多个先进机构构成。 这些单元沿着矿物开采工作的长壁面并排定位。 每个前进机构包括一对大致平行的液压前进柱塞和由一对弹性大致平行​​的导向杆构成的导杆系统。 每个导杆系统一端连接到沿着长壁面延伸的输送机。 每个前进机构的每个导杆的另一端附接到相应的滑动件，该滑动件可滑动地引导到相应的导轨上，该导轨连接到屋顶支撑单元的相应楼板梁。 滑块连接到液压前进柱塞的活塞杆上。 液压前进柱塞的缸体附接到相邻的地板梁之一，并且附接到液压前进柱塞的活塞杆的滑动件附接到导杆系统。 安装在液压前进柱塞的活塞杆上的滑动片连接到另一个地板梁上。