DUST COLLECTING DEVICE FOR A ROOF TOOL

摘要

A dust collecting device disposed circumferentially around a roof tool and in association with a roof drill bit and slidable thereon for collecting and removing dust generated during a dry drilling operation. The dust collecting device comprises a cylinder member, a bushing, and a mounting assembly comprising a top washer, a rubber insert, and a bottom washer. Another aspect of the invention provides a dust collecting device comprising a cylinder member, a bushing, and a mounting assembly comprising a disk and clips. The rubber insert and the clips resist movement of the dust collecting device along the drill steel of the roof tool during the drilling operation.

主权项

1. A roof tool, comprising:
a drill steel; a roof drill bit connected to the drill steel; a dust collecting device circumferentially disposed on the drill steel and the roof drill bit constructed and arranged to collect and remove dust from the environment when drilling a bolt bore hole; and a mounting assembly for mounting the dust collecting device on the drill steel and the roof drill bit, wherein the mounting assembly comprises at least one clip and a bushing configured to allow but resist movement of the dust collecting device along the drill steel during the drilling of a bolt bore hole.