发明名称
摘要 A drilling machine for drilling large drill holes in rock, especially underground, comprises a support, a rotary drilling drive longitudinally displaceable on the support in a drilling direction and provided with a reducing transmission and drive motors. The reducing transmission including a planetary transmission which is transmissively and selectively connectable with two of the drive motors as a superposed transmission.
申请公布号 DE3839007(C1) 申请公布日期 1989.12.07
申请号 DE19883839007 申请日期 1988.11.18
申请人 TURMAG TURBO-MASCHINEN-AG NUESSE & GRAEFER, 4322 SPROCKHOEVEL, DE 发明人 EBELING, WOLFGANG, DIPL.-ING., 3000 HANNOVER, DE
分类号 E21B3/02;E21B4/00;E21B4/16 主分类号 E21B3/02
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