Rotation Device For A Boom Of A Mining Or Constructions Work Rig, Rig And Boom

• US 20080093525A1
• Filed: 02/17/2006
• Published: 04/24/2008
• Est. Priority Date: 03/11/2005
• Status: Active Grant

• Current Assignee: Epiroc Rock Drills AB (Epiroc AB)
• Original Assignee: Atlas Copco Rock Drills AB (Atlas Copco AB)
• Inventors: Saf, Fredrik
• Granted Patent: US 8,267,194 B2
• Time in Patent Office: Days
• US Class Current: 248/674
• CPC Class Codes: E21B 7/025 Rock drills, i.e. jumbo drills
• CPC Class Codes: E21B 7/028 the drilling apparatus being detachable from the vehicle, e.g. hand portable drills

Abstract

A rotation device (12) for rotation of equipment (13) fastened at the region of a distal end of a boom (9,11), which has a general longitudinal axis, and which is part of a boom device (3) which is fastenable to a carrier (2) for a mining or constructions work rig, wherein the rotation device includes a first rotation unit (R1) arranged to rotate the equipment around an axis (A1) which is essentially parallel to the longitudinal axis of the boom and a second rotation unit (R2) which is arranged to rotate the equipment around an axis (A2), which forms an angle with the longitudinal axis of the boom. The rotation units (R1, R2) are fastened to an angle unit (12), which is included in the rotation device (12) and has rotational axes (A1, 21; A2,22) extending at an angle with respect to each other, and are connectable to the boom (9,11) as well as to said equipment (13). The invention also concerns a mining or constructions work rig and a boom.

Claims

1. Rotation device (12) for rotation of equipment (13) fastened at the region of a distal end of a boom (9, 11), which has a general longitudinal axis, and which is part of a boom device (3) which is fastenable to a carrier (2) for a mining or constructions work rig, wherein the rotation device includes a first rotation unit (R1) arranged to rotate the equipment around an axis (A1) which is essentially parallel to the longitudinal axis of the boom and a second rotation unit (R2) which is arranged to rotate the equipment around an axis (A2), which forms an angle with the longitudinal axis of the boom, characterized in

that the rotation units (R1, R2) are fastened to an angle unit (12′

), which is included in the rotation device (12) and has rotational axes (A1, 21;

A2, 22) extending at an angle with respect to each other, and are connectable to the boom (9, 11) as well as to said equipment (13).

2. Device according to claim 1, characterized in that the first rotation unit (R1) has a separating place (15) at its outgoing rotational axis where it is releasably fastenable to the boom (9, 11).

3. Device according to claim 1, characterized in that the second rotation unit (R2) has a separating place (16) at its outgoing rotational axis, whereby its releasably fastenable to the equipment (13).

4. Device according to claim 1, characterized in that said angle is essentially 90°

.

5. Device according to claim 1, characterized in that the angle unit (12′

) has an open or openable intermediate portion (24) with the possibility of access from the outside to a rotation motor (17, 18) belonging to the respective rotation unit (R1, R2).

6. Device according to claim 5, characterized in that the intermediate portion (24) is limited by two mutually angled rotation motor attachments (23, 25) whereto the rotation motors (17, 18) are fastened so that they are arranged inside or in connection with the intermediate portion (24).

7. Device according to claim 5, characterized in that each rotation motor (17, 18) is arranged to transmit rotational movement over a toothed gear unit (19, 20).

8. Device according to claim 7, characterized in that said toothed gear unit (19, 20) is a planet gear transmission unit.

9. Mining or constructions work rig including a boom (9, 11) and a rotation device (12) according to claim 1.

10. Rig according to claim 9, characterized in that the boom includes a first boom portion (9) which is arranged to be pivotally connected to said carrier (2) and a second boom portion (11) which is arranged telescopically displaceable with respect of the first boom portion.

11. Rig according to claim 10, characterized in that at least one of the first (9) and the second (11) boom portion has at least partially non-circular cross section.

12. Rig according to claim 11, characterized in that said cross section is rectangular.

13. Rig according to claim 1, characterized in that the equipment (13) includes a pivot joint (25) with a pivoting motor.

14. Boom (9, 11) for a mining or constructions work rig including a rotation device (12) according to claim 1.

15. Device according to claim 2, characterized in that the second rotation unit (R2) has a separating place (16) at its outgoing rotational axis, whereby its releasably fastenable to the equipment (13).

16. Device according to claim 2, characterized in that said angle is essentially 90°

.

17. Device according to claim 3, characterized in that said angle is essentially 90°

.

18. Device according to claim 2, characterized in that the angle unit (12′

) has an open or openable intermediate portion (24) with the possibility of access from the outside to a rotation motor (17, 18) belonging to the respective rotation unit (R1, R2).

19. Device according to claim 3, characterized in that the angle unit (12′

) has an open or openable intermediate portion (24) with the possibility of access from the outside to a rotation motor (17, 18) belonging to the respective rotation unit (R1, R2).

20. Device according to claim 6, characterized in that each rotation motor (17, 18) is arranged to transmit rotational movement over a toothed gear unit (19, 20).