Patent ID: 8245997

Claim:
Drill stand comprising a base plate, a carriage arranged to be able to carry a drill motor and a drill column which is pivotally mounted to a front part of the base plate, said drill column being supported by a back support which is located in a longitudinal direction rear of said drill column and is pivotally mounted to a back part of the base plate, and a back side of the drill column facing the back support is arranged as a track having lateral wings, a right side wing and a left side wing, as seen from the front side of the drill stand, and each wing extending laterally from outside and inwards, but being separated by an elongate opening, each lateral wing having an outside rear surface, right and left and an inside forward surface, right and left, and a clamping arrangement is fastened both to the back support and to the track enabling them to be fixed to each other in different positions along the track by clamping, wherein the clamping arrangement comprises a center clamp having a flange part fitting in the elongate opening and having protrusions, right and left, from the flange part intended to contact the inside forward surfaces, right and left, when clamping, the clamping arrangement further comprising an outer clamp right and an outer clamp left each having at least a lateral contact surface arranged to contact the respective outside rear surface when clamping, each outer clamp being arranged outside of the center clamp and having outer angled contact elements intended to cooperate with center angled contact elements to provide a longitudinal backwards motion of the center clamp in relation to the outer clamps when a clamping element is pressing the outer clamps laterally together against the center clamp making its protrusions press against the inside forward surfaces, and making the lateral contact surfaces of the outer clamps press against the outside rear surfaces, i.e providing a clamping in a longitudinal direction.