Rock bolt installation tool

A rock anchor installation tool, comprising:

• a drive shaft having a proximal end, which is adapted to engage with a drilling rig, and a distal end which includes a recess which is adapted to receive a trailing end portion of a rock bolt and which has a first seat against which an axially pre-set component of a rock anchor assembly abuts;
• and
• a tubular sleeve telescopically engaged with the shaft which has a first end, which is adapted to receive an axially moveable component of the rock anchor assembly and which has a second seat against which the axially moveable component abuts, and a second end,
• wherein the sleeve is reciprocally moveable relatively to the shaft between a biased forward position in which the axially pre-set component and the axially moveable component are spaced, and a retracted second position in which the axially pre-set component engages or connects to the axially moveable component, and
• wherein the axially moveable component is a spherical seat.

A rock anchor installation tool, comprising:

• a drive shaft having a proximal end, which is adapted to engage with a drilling rig, and a distal end which includes a recess which is adapted to receive a trailing end portion of a rock bolt and which has a first seat against which an axially pre-set component of a rock anchor assembly abuts;
• and
• a tubular sleeve telescopically engaged with the shaft which has a first end, which is adapted to receive an axially moveable component of the rock anchor assembly and which has a second seat against which the axially moveable component abuts, and a second end,
• wherein the sleeve is reciprocally moveable relatively to the shaft between a biased forward position in which the axially pre-set component and the axially moveable component are spaced, and a retracted second position in which the axially pre-set component engages or connects to the axially moveable component, and
• wherein a spring is interposed between a stop element on the drive shaft and the second end of the sleeve.

A rock anchor installation tool, comprising:

• a drive shaft having a proximal end, which is adapted to engage with a drilling rig, and a distal end which includes a recess which is adapted to receive a trailing end portion of a rock bolt and which has a first seat against which an axially pre-set component of a rock anchor assembly abuts;
• and
• a tubular sleeve telescopically engaged with the shaft which has a first end, which is adapted to receive an axially moveable component of the rock anchor assembly and which has a second seat against which the axially moveable component abuts, and a second end,
• wherein the sleeve is reciprocally moveable relatively to the shaft between a biased forward position in which the axially pre-set component and the axially moveable component are spaced, and a retracted second position in which the axially pre-set component engages or connects to the axially moveable component, and
• wherein the recess is adapted in a hex shape to receive a hex shaped nut.