发明名称 |
MINE ROOF SUPPORTING STRUCTURE |
摘要 |
A mine excavator especially for heavy coal beds comprises a base on which the power loader and conveyor are provided and on which the roof support or shield is pivotally mounted. According to the invention, a back member connected to the roof plate and spaced above the base has a downwardly and forwardly swingable door which deposits caved material onto the conveyor at a forward portion of the main base. |
申请公布号 |
AU6995981(A) |
申请公布日期 |
1981.11.12 |
申请号 |
AU19810069959 |
申请日期 |
1981.04.29 |
申请人 |
KOZPONTI BANYASZATI FEJLESZTESI INTEZET AND VARPALOTAI;SZENBANYAK |
发明人 |
M. MARTINKO |
分类号 |
E21D23/00;E21D23/03;E21D23/04;E21D23/06 |
主分类号 |
E21D23/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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