Apparatus and method for manufacturing a rock bolt
AssigneeDywidag-Systems International Pty Limited
InventorsMieczyslaw S. Rataj, Alan Henderson, Albert Taylor
Life of this patent
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Abstract
An apparatus for manufacturing a cable bolt from a cable (1) includes first and second clamps (2, 3) adapted to releasably clamp the cable (1) with the cable (1) extending along the longitudinal axis (4) of the apparatus. A first cable displacement device (12) longitudinally displaces the first clamp (2) relative to the second clamp (3) along the longitudinal axis (4). A first clamp rotation device (14) rotates the first clamp (2) relative to the second clamp (3) about the longitudinal axis (4). The apparatus also has a second clamp displacement device (19) for simultaneously longitudinally displacing the first and second clamps (2, 3) along the longitudinal axis (4).
Claims16
An apparatus for manufacturing a cable bolt from a cable, said apparatus having a longitudinal axis and comprising:
- a first clamp adapted to releasably clamp the cable with the cable extending along said longitudinal axis through said first clamp;
- a second clamp adapted to releasably clamp the cable with the cable extending along said longitudinal axis through said second clamp;
- a first clamp displacement device for longitudinally displacing said first clamp, relative to said second clamp, along said longitudinal axis;
- and a first clamp rotation device for rotating said first clamp, relative to said second clamp, about said longitudinal axis;
- wherein said first clamp rotation device is adapted to rotate said first clamp relative to said second clamp simultaneously with longitudinal displacement of said first clamp relative to said second clamp.
An apparatus for manufacturing a cable bolt from a cable, said apparatus having a longitudinal axis and comprising:
- a first clamp adapted to releasably clamp the cable with the cable extending along said longitudinal axis;
- a second clamp adapted to releasably clamp the cable with the cable extending along said longitudinal axis;
- a first clamp displacement device for longitudinally displacing said first clamp, relative to said second clamp, along said longitudinal axis;
- and a first clamp rotation device for rotating said first clamp, relative to said second clamp, about said longitudinal axis;
- wherein said first clamp rotation device is adapted to rotate said first clamp relative to said second clamp simultaneously with longitudinal displacement of said first clamp relative to said second clamp;
- wherein said first clamp rotation device comprises a cam mechanism;
- and
- wherein said cam mechanism comprises:
- a first cylinder concentrically mounted with respect to said longitudinal axis and being rotationally fixed in relation to said first clamp, said first cylinder having an aperture extending longitudinally therethrough for receipt of the cable extending along said longitudinal axis, and a second cylinder concentrically mounted about said first cylinder, wherein one of said first and second cylinders is provided with a cam slot extending at an acute angle to said longitudinal axis, with the other of said first and second cylinders being provided with a cam follower engaging said cam slot.
An apparatus for manufacturing a cable bolt from a cable, said apparatus having a longitudinal axis and comprising:
- a first clamp adapted to releasably clamp the cable with the cable extending along said longitudinal axis;
- a second clamp adapted to releasably clamp the cable with the cable extending along said longitudinal axis;
- a first clamp displacement device for longitudinally displacing said first clamp, relative to said second clamp, along said longitudinal axis;
- and a first clamp rotation device for rotating said first clamp, relative to said second clamp, about said longitudinal axis;
- wherein said first clamp rotation device is adapted to rotate said first clamp relative to said second clamp simultaneously with longitudinal displacement of said first clamp relative to said second clamp;
- a drive wheel for engaging and advancing the cable along said longitudinal axis;
- and
- wherein said drive wheel is provided with radially extending spikes for engaging the cable.
A method for manufacturing a cable bolt from a cable, said method comprising the steps of:
- (a) clamping a first portion of said cable with a first clamp;
- (b) clamping a second portion of said cable with a second clamp, said second portion of said cable being spaced from said first portion of said cable along a longitudinal axis of said cable;
- (c) rotating said first clamp, relative to said second clamp, about said longitudinal axis in a direction against the lay of said cable;
- (d) longitudinally displacing said first clamp, relative to said second clamp, along said longitudinal axis towards said second clamp;
- and (e) unclamping said first and second portions of said cable;
- wherein steps (c) and (d) are carried out simultaneously.
Dependencies are inferred from the claim text.