Protection cage, rock drilling unit, levelling arrangement and method for rock drilling

摘要

The invention relates to a protection cage, a levelling arrangement and a method for rock drilling. The protection cage (13) is intended to encapsulate a mining device. The cage (13) has a grid-like configuration (24) whereby it comprises several mesh openings (27) and intermediate portions (30) between them. The intermediate portions are in transverse direction as compared to a longitudinal axis of the protection cage. In the levelling arrangement and method the disclosed protection cage is being implemented.