Boom arrangement for a scaling device and scaling device
AssigneeAtlas Copco Rock Drillas AB
InventorJonas Orgård
Life of this patent
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Abstract
A boom arrangement (1) for a scaling device including a scaling boom for supporting a scaling hammer, wherein the scaling boom is arranged for connection to a carrier vehicle, is distinguished in that the scaling boom (4,5) is pivotally supported by a boom column unit (3), which is arranged for pivotal connection to the carrier vehicle, that the boom column unit (3)includes a boom column (7), and a column bar unit (8) extending at a distance from that element, that the boom column and the column bar unit are pivotally connected to a column link (9) for forming a four-link mechanism, and that the column link (9) supports a bearing for a boom lift cylinder (12). The invention also concerns a scaling device.
Claims20
Boom arrangement (1) for a scaling device including a scaling boom for supporting a scaling hammer, wherein the scaling boom is arranged for connection to a carrier vehicle, wherein:
- the scaling boom (4, 5) is pivotally supported by a boom column unit (3), which is arranged for pivotal connection to the carrier vehicle,
- the boom column unit (3) includes a boom column (7), and extending at a distance from that element, a column bar unit (8),
- the boom column and the column bar unit are pivotally connected to a column link (9) for forming a four-link mechanism,
- the column link (9) supports a bearing for a boom lift cylinder (12),
- the bearing for the boom lift cylinder (12) is positioned for carrying a boom lift cylinder (12) which is positioned below the scaling boom (4, 5) in operation,
- the boom column (7) is provided with a forked outer end portion (22) for pivotally enclosing the column link (9), and
- the scaling boom (4, 5) is pivotally joined to the four-link mechanism in a pivot means (20) connecting the boom column (7) and the column link (9).
Dependencies are inferred from the claim text.