US 2009/0255663 A1Published application

Drilling apparatus

OwnerPetrus Christiaan Gouwsinventor

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Abstract

The invention relates to accessory equipment for a drilling apparatus for drilling holes into the ground. The accessory equipment (10), in its operative configuration, is mounted on the support structure (52) of the drilling apparatus by a mounting bracket thereof (22), the mounting bracket having an elongate carrier formation (24) mounted thereon that defines an operatively vertical axis and that has a carrier means (26) displaceably located thereon, displacement means (30) providing for displacement of the carrier means with respect to the carrier formation along the longitudinal axis defined by the carrier formation. The carrier means serves to carry a drill bit wrench (16) for required loosening of adjacent drill bit segments (12, 14) with respect to one another, the accessory equipment permitting, through displacement of the carrier means, the drill bit wrench to operate at different required levels, as determined by the length of drill bit segments involved.

Claims11

Dependent claims

Accessory equipment for a drilling apparatus which includes a mounting structure for mounting a drill bit wrench on the support structure of a drilling apparatus, the mounting structure including, in its in use configuration,

a mounting bracket securable to the support structure of a drilling apparatus;
an elongate carrier formation secured on the mounting bracket and defining a longitudinal axis along the length thereof which, with the mounting bracket secured to the support structure of a drilling apparatus, is parallel to the longitudinal axis of the drill bit to be used with the drilling apparatus;
carrier means located by the carrier formation in a configuration in which it is displaceable with respect to the carrier formation along the longitudinal axis defined by the carrier formation, the carrier means having support formations for supporting a drill bit wrench in a configuration in which, with the mounting bracket secured to the support structure of a drilling apparatus, it can serve to loosen drill bit segments of the drill bit of the drilling apparatus;
and
displacement means for displacing the carrier means with respect to the carrier formation along the longitudinal axis defined by the carrier formation.

2 more elements

Dependencies are inferred from the claim text.