Patent ID: 7814994

Claim:
A rock drilling drill rod support device comprising a drill rod support surface ( 10 ), two opposing drill rod support halves ( 20 ), and means for moving only said two opposing drill rod support halves ( 20 ) along a common plane defined by said drill rod support surface, said drill rod support surface defining an opening for receiving a drill string ( 30 ), each said drill rod support half ( 20 ) comprising a surface ( 21 ) for direct contact with said drill string ( 30 ) received in said opening in said drill rod support surface, and each said drill rod support half being provided with a recess ( 23 ) capable of forming a drill string opening ( 22 ) with an opposing said drill rod support half ( 20 ), the recess ( 23 ) being generally V-shaped, for enabling guiding of drill strings ( 30 ) of different shape and dimension, characterized in that at least the portion of each said drill rod support half ( 20 ) which contacts said drill string is formed from a material having a low coefficient of friction relative to said drill string received in said opening in said drill rod support surface to enable guiding of the drill string during drilling, and that the drill rod support halves ( 20 ) are continuously and parallelly displaceable to and from each other, for enabling contact with said drill string ( 30 ) received in said opening in said drill rod support surface, whereby the two drill rod support halves ( 20 ) enable guiding of drill strings of different shape and dimension.