Carriage feed system

Details Carriage feed system Carriage feed system

1984-06-06

1986-08-12

Novosad, Stephen J.

Boring or penetrating the earth

With above-ground means to feed tool

175113, 175122, E21B 1908

Patent

active

046050787

ABSTRACT:
Disclosed is a new carriage feed system which utilizes in the preferred embodiment a single double rod feed cylinder having its rod ends mounted to the top bridge and base of the tower respectively.
The cylinder is hydraulically fed at the ends of the rod. A sheave carrier is mounted at each end of the barrel of the cylinder. The cylinder barrel forming the structure for support of the carriers which are also guided in the tower structure for linear movement along the tower. The cable reeving for the system is disposed about sheaves on the carrier and anchored at the tower midpoint. Suspended from the cable and guided on the tower is a drill head which performs the usual drilling functions. The system is fully balanced with regard to loads in the cables and about the cylinder to minimize offset stress. In addition, all draw down forces are taken in tension in the cylinder rods.

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