发明名称 |
Gear rack for longwall mining machine |
摘要 |
A gear rack for a longwall mining machine characterized in having a width permitting the arms which carry the cutter drums of the mining machine to move to lower positions relative to a face conveyor such that low seams of coal may be mined. The rack comprises a plate extending along the face conveyor and has driving pin extensions which extend from one face of the plate to engage a driving gear or gears on the mining machine.
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申请公布号 |
US4307915(A) |
申请公布日期 |
1981.12.29 |
申请号 |
US19800140276 |
申请日期 |
1980.04.14 |
申请人 |
GEBR. EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI MBH |
发明人 |
KNORR, VOLKER |
分类号 |
E21C29/00;E01B25/04;E21C29/02;(IPC1-7):E21C29/02 |
主分类号 |
E21C29/00 |
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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