Device for rock bolting and for automized rock bolting and rock bolting method
AssigneeAtlas Copco Rock Drills AB
InventorsFredrik Öberg, Per Jonson
Life of this patent
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Abstract
A device for rock bolting with an adapter device (10) for connection of a drilling machine (3) to a self drilling rock bolt (7), in which the adapter device has an adapter element (14) which is sealingly surrounded by a swivel sleeve (13) for connection to one or more external source for flushing medium (8) and bolt grouting medium (9), and in which the adapter element has a thread for connecting to a corresponding thread on the rock bolt (7), and an integral connection portion for connection to the drilling machine (3).
Claims22
An adapter device (1) for connecting a drilling machine (3) to a self drilling rock bolt (7) for rock bolting, said adapter device including an adapter element (14) which is sealingly surrounded by a swivel sleeve (13) that is arranged for connection of an axial channel through the adapter device (20), which in operation cooperates with an axial flushing channel in the rock bolt, to at least one external source for flushing medium (8) and bolt grouting medium (9), wherein the adapter element (14) at a distal end (11) includes a thread for connecting to a corresponding thread on the rock bolt (7),
- wherein the adapter element (14) at a proximal end (12) includes an integral connection portion for connection to the drilling machine (3), the adapter element and the connection portion thereof being integrally formed as one single element in one piece;
- and means for maintaining the swivel sleeve (13) surrounding the adapter element (14) at a position outside of said drilling machine (3) during operation of said adapter device.
A method for rock bolting with self drilling rock bolts, wherein a drilling machine (3) drives a rock bolt during simultaneous flushing with a flushing medium and injection with bolt grouting medium respectively over an adapter device (10), which includes an adapter element (14) that is sealingly surrounded by a swivel sleeve (13), said swivel sleeve (13), in operation, surrounding said adapter element (14) at a position outside of said drilling machine (3), wherein the adapter device (10) is threaded to the rock bolt to be driven in, wherein the adapter element (14) is connected to the drilling machine (3) by means of an integral connection portion at a proximal end (12), the adapter element and said connection portion thereof being integrally formed as one single element in one piece;
- and wherein the adapter device is unfastened from its engagement with the rock bolt by rotationally reversing the drilling machine.
Dependencies are inferred from the claim text.