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Drill depth control device

Imported: 24 Feb '17 | Published: 28 Sep '04

Phill O'Meley

USPTO - Utility Patents

Abstract

This invention provides a roof bolt installation apparatus including a drill stabilizing mechanism including a base having a cylindrical bore therein, and a stabilizing rod extendable from the base and slidably located in the bore. The rod has a distal end, and a drill stabilizing end plate is mounted on the rod distal end. The roof bolt installation apparatus also includes a drilling unit which is adapted to rotatably carry a drill, the drilling unit being slidably mounted on the drill stabilizing mechanism, and a mechanism for moving the drilling unit along the drill stabilizing mechanism. The roof bolt installation apparatus also includes a drill depth control device including a base, a top adapted to engage the mine roof, and at least two bars connected between the drill depth control base and the drill depth control top. The bars pass through openings in the drill stabilizing plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a roof bolt installation apparatus including a drill depth control device in accordance with this invention.

FIG. 2 is a side view of the roof bolt installation apparatus including a drill depth control device shown in FIG. 1 with the drill engaging a mine roof.

FIG. 3 is a side view of the roof bolt installation apparatus including a drill depth control device shown in FIG. 1 with the drill unit engaging the drill depth control device.

FIG. 4 is a side view of the roof bolt installation apparatus including a drill depth control device shown in FIG. 1 with the drill unit engaging the mine roof.

Claims

1. A roof bolt installation apparatus including

2. A roof bolt installation apparatus according to claim 1 wherein said drill depth control is square and said drill depth control device base is round.

3. A roof bolt installation apparatus according to claim 2 wherein said extendable rod end provides a guiding means for a roof bolt placed in said drilling unit.

4. A roof bolt installation apparatus according to claim 1 wherein there are four bars connected between the drill depth control base and the drill depth control top.