Invention Grant
US09562391B2 Driving head for telescopic drill rods and machine comprising said head 有权
用于伸缩钻杆的驱动头和包括所述头部的机器

Driving head for telescopic drill rods and machine comprising said head
Abstract:
A driving head for telescopic drill rods has a frame, a cylindrical collar rotatably coupled with said frame, and provided at least with one internal surface comprising at least one driving rack adapted to be coupled with corresponding driven racks of telescopic drill rods, and actuation means to drive said cylindrical collar into rotation, said driving rack being coupled with said cylindrical collar by means of removable connection means. A machine provided with said driving head is also disclosed.
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