发明授权
- 专利标题： Tensioning a longwall mineral mining installation
- 专利标题（中）： 拉长长壁矿物开采装置
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申请号： US889076申请日： 1978-03-22
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公开(公告)号： US4169689A公开(公告)日： 1979-10-02
- 发明人: Walter Weirich , Michael Dettmers , Christoph Rassmann , Willi Heyer , Herbert Beyer , Horst Linke
- 申请人： Walter Weirich , Michael Dettmers , Christoph Rassmann , Willi Heyer , Herbert Beyer , Horst Linke
- 申请人地址： DEX Lunen
- 专利权人： Gewerkschaft Eisenhutte Westfalia
- 当前专利权人： Gewerkschaft Eisenhutte Westfalia
- 当前专利权人地址： DEX Lunen
- 优先权： DEX2712388 19770322
- 主分类号： E21D23/18
- IPC分类号： E21D23/18 ; B65G23/44 ; E21D23/00 ; E21F13/08 ; E21F13/10 ; E21D15/44
摘要：
Mining apparatus comprises a longwall conveyor and tensioning means for tensioning the conveyor in its longitudinal direction. The tensioning means is constituted by a plurality of hydraulic tensioning rams, each of which is mounted, in use, by means of pivot joints at each end thereof directly between the conveyor and a respective roof support unit of a roof support assembly. Each tensioning ram extends at an acute angle to the longitudinal axis of the conveyor. The tensioning rams are positioned in two groups, one in each end zone of the conveyor.
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