Support for drilling and bolting tool

A drilling and bolting device comprising:

• a drilling and bolting tool including a base frame, a feed frame supported for translational movement relative to the base frame, and a rotation unit supported for translational movement relative to the base frame and the feed frame;
• and
• a boom including,
• a first portion including a first end and a second end, a longitudinal axis extending between the first end and the second end,
• a second portion including a proximal end and a distal end, at least a portion of the second portion positioned within the first portion and supported for translational movement relative to the first portion in a direction parallel to the longitudinal axis, the distal end supporting the drilling and bolting tool,
• an actuator for moving the second portion relative to the first portion in the direction parallel to the longitudinal axis,
• a shaft support supporting the second portion for movement relative to the first portion, the shaft support including a piston slidable in the direction parallel to the longitudinal axis, movement of the piston causing the second portion to rotate relative to the first portion about the longitudinal axis, and
• a fluid passage for conveying pressurized fluid through the boom to actuate the tool, the fluid passage enclosed within the first portion and the second portion.

A boom for supporting a drilling and bolting tool, the boom comprising:

• a first portion including a first end and a second end, a longitudinal axis extending between the first end and the second end;
• a second portion including a proximal end and a distal end, the second portion supported for translational movement relative to the first portion in a direction parallel to the longitudinal axis, the distal end configured to support the drilling and bolting tool, the second portion at least partially positioned within the first portion;
• a shaft support supporting the second portion for movement relative to the first portion parallel to the longitudinal axis, the shaft support including a piston, translational movement of the piston causing the second portion to rotate relative to the first portion about the longitudinal axis;
• and
• a fluid passage extending through the first portion and the second portion and configured to convey pressurized fluid to actuate the tool, the fluid passage enclosed within the first portion and the second portion.