Epiroc Rock Drills Aktiebolag

Atlas Copco Rock Drills Ab

Martin Ekefalk

Jan Olsson

Fredrik Saf

Sven-Olov Nyström

René Deutsch

Hans Gustavsson

Viktor Bergqvist

Johan Engblom

Lennart Gürlet Häggström

Björn Anders Larsson

Björn A Larsson

A method for ensuring the quality of a multi-component mixture in a system for rock reinforcement is described herein. The system comprises a first and a second channel for a respective first and second component intended for injection in a rock hole. The respective channel comprises a pump and a container intended for the respective component. The method comprises the steps of pumping of the respective component from the respective container through the respective channel and continuously comparing the flow of the first component in the first channel with the flow of the second component in the second channel. The method further comprises the step of controlling the pumps individually, based on the comparison of the flows, in such a way that a deviation from a pre-defined volume ratio between the first component and the second component in the mixture is below a pre-defined first threshold.

Method and system for ensuring the quality of a multi-component mixture for rock reinforcement

A rig adapted for rock bolting comprising a feeding magazine is provided. The feeding magazine comprises a holding structure for bolts and is arranged in conjunction with a rock reinforcement unit. The rig further comprises a feeding device that is arranged to provide the rock reinforcement unit with bolts from the feeding magazine. The rig further comprises a loading magazine comprising a holding structure for bolts, as well as a, relative to the feeding magazine and the loading magazine, moveable picking device arranged to move bolts that are located in the loading magazine such that they are accessible to the feeding device.

Rock bolting rig and method at rock bolting rig

A boom arrangement () for a rock drill rig () including a feed beam unit () for displaceable reception of at least one rock drilling machine (), a support unit () for connection to and support of a rotator unit (), a boom unit () between the rotator unit () and the feed beam unit () for displacement of the feed beam unit in planes essentially at right angle to a main plane (P) for the support unit (), wherein the rotator unit () is arranged for rotating the feed beam unit () around an axis (A), which is essentially-perpendicular to said main plane (P), wherein the support unit () is connectable to a vehicle unit being part of the rock drill rig (), and being arranged for displacing the rock drill rig. The support unit () has joint connecting elements () being sidewardly connectable for connection to a sidewardly directed carrier device () which is attachable to the vehicle unit, and a lower abutment side () for lying supporting against an outer substrate. The invention also concerns a rock drill rig.

Boom arrangement for a rock drill and rock drill rig

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Kumla, Sweden

Martin Ekefalk