Methods of and apparatus for winning reef
AssigneeAtlas Copco Aktiebolag
InventorsLorne Robert Herron, Axel Stromnes
Life of this patent
Estimating the term…
Abstract
A reef winning machine comprises a frame on which is mounted a saddle. The saddle carries a boom on which is mounted a drill. The saddle also carries a member on which is carried a mechanical rock splitter. The drill and rock splitter operate simultaneously, the latter acting in a hole that had previously been drilled by the rock drill. A jack moves the saddle along the frame in steps that are the same as the distance between the drill and rock splitter. An impact breaker may be used instead of a rock splitter.
Claims14
A reef winning machine comprising:
- a frame,
- means for fixing the frame in position in a stope,
- a saddle on the frame,
- moving means coupled to the saddle for moving the saddle along the frame, the moving means including a hydraulic jack coupled to the saddle and means for supplying measured amounts of hydraulic fluid to the hydraulic jack so that the hydraulic jack moves the saddle in substantially equal steps,
- a first boom carried by the saddle,
- a rock drill mounted on the boom,
- means coupled to the rock drill to advance the rock drill forwardly on the boom,
- tool carrying means carried by the saddle, and
- rock breaker means mounted on the tool carrying means and operating simultaneously with the rock drill.
A method of winning reef comprising:
- drilling holes in upper and lower aligned rows with a rock drill so as to span the reef,
- inserting rock breaker means into one hole and simultaneously breaking the rock while drilling an adjacent hole in the row,
- repeating the operations of inserting rock breaker means into a hole below said one hole and simultaneously breaking the rock while drilling an adjacent hole,
- laterally moving the rock drill and rock breaker by substantially equal intervals to a next position in one of said rows and drilling and inserting the rock breaker means for breaking rock while drilling a new hole, and
- then removing the cracked and loosened reef,
- whereby breaking is always performed in a lateral direction towards the standing laterally displaced broken-out free surface of the preceding breaking operation.
A reef winning machine comprising:
- a frame,
- means for fixing the frame in position in a stope,
- a saddle on the frame,
- moving means coupled to the saddle for moving the saddle along the frame,
- a first boom carried by the saddle,
- a rock drill mounted on the boom,
- means coupled to the rock drill to advance the rock drill forwardly on the boom,
- tool carrying means including a tool receiving bed carried by the saddle, and
- rock breaker means mounted on the tool carrying means and operating simultaneously with the rock drill, the rock breaker means comprising a mechanical wedge splitter resting on the tool receiving bed.
Dependencies are inferred from the claim text.