Drill stand for a core drilling machine

1. A drill stand for a core drilling machine ( 1 ) for driving an annular core bit ( 2 ) rotatable about a rotational axis (A), the drill stand comprising post ( 5 ) for supporting the core drilling machine ( 1 ); a base plate for supporting the post ( 5 ) and extending in a plane (E) extending substantially transverse to the rotational axis (A) of the core bit ( 2 ), the base plate being formed of a post plate ( 3 ) and a vacuum plate ( 6 ) securable with each other with a possibility of both linear displacement relative to each other in the place (E) the base plate extends, and pivotal movement relative to each other; post attachment means ( 4 ) for securing the post ( 5 ) on the post plate ( 3 ) and linearly displaceable in the plane of the base plate; and vacuum attachment means ( 7 ) for mounting the vacuum plate ( 6 ) and, thereby, the base plate on a surface, wherein the post ( 5 ) comprises two upright posts ( 5 ), spaced from each other and extending parallel to each other and being arranged circumferentially with respect to the rotational axis (A) of the annular core bit ( 2 ).

2. A drill stand according to claim 1 , further comprising a locking bolt ( 8 ) for frictionally positively securing the post plate ( 3 ) on the vacuum plate ( 6 ).

3. A drill stand according to claim 2 , wherein the post plate ( 3 ) has an elongate opening ( 10 ) extending radially to the rotational axis (A) of the annular core bit ( 2 ), and the locking bolt ( 8 ) extends through the elongate opening ( 10 ).

4. A drill stand according to claim 2 , wherein the locking bolt ( 8 ) has a lever knob ( 9 ).

5. A drill stand according to claim 1 , wherein the post plate ( 3 ) has at least two alignment elements ( 11 ) longitudinally adjustable along surface normals to the separating plane (E).

6. A drill stand according to claim 5 , wherein the alignment elements ( 11 ) are formed as alignment screws.

7. A drill stand according to claim 1 , wherein the post plate ( 3 ) includes leveling means ( 12 ).

8. A drill stand according to claim 7 , wherein the leveling means ( 12 ) is a boxed air level.

9. A drill stand according to claim 1 , wherein the two stand post ( 5 ) are arranged symmetrically to each other with respect to the rotational axis (A) of the annular core bit ( 2 ).

10. A drill stand for a core drilling machine ( 1 ) for driving an annular core bit ( 2 ) rotatable about a rotational axis (A), the drill stand comprising post ( 5 ) for supporting the core drilling machine ( 1 ); a base plate for supporting the post ( 5 ) and extending in a plane (E) extending substantially transverse to the rotational axis (A) of the core bit ( 2 ), the base plate being formed of a post plate ( 3 ) and a vacuum plate ( 6 ) securable with each other with a possibility of both linear displacement relative to each other in the plane (E) the base plate extends, and pivotal movement relative to each other; post attachment means ( 4 ) for securing the post ( 5 ) on the post plate ( 3 ) and linearly displaceable in the plane of the base plate; and vacuum attachment means ( 7 ) for mounting the vacuum plate ( 6 ) and, thereby, the base plate on a surface, wherein the post plate ( 3 ) has a concave recess ( 13 ) open toward the rotational axis (A) of the annular core bit ( 2 ).

11. A drill stand for a core drilling machine ( 1 ) for driving an annular core bit ( 2 ) rotatable about a rotational axis (A), the drill stand comprising post ( 5 ) for supporting the core drilling machine ( 1 ); a base plate for supporting the post ( 5 ) and extending in a plane (E) extending substantially transverse to the rotational axis (A) of the core bit ( 2 ), the base plate being formed of a post plate ( 3 ) and a vacuum plate ( 6 ) securable with each other with a possibility of both linear displacement relative to each other in the plane (E) the base plate extends, and pivotal movement relative to each other; post attachment means ( 4 ) for securing the post ( 5 ) on the post plate ( 3 ) and linearly displaceable in the plane of the base plate; and vacuum attachment means ( 7 ) for mounting the vacuum plate ( 6 ) and, thereby, the base plate on a surface, wherein a side of the post plate ( 3 ) adjacent to the vacuum plate ( 6 ) is shaped as a segment of a circle.