Hydromill wheel with single disc cutting rollers
AssigneeVSL International AG
InventorJean-Christophe Gillard
Life of this patent
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Abstract
A hydromill wheel (5) for excavating a trench in hard rock includes a drum (4) arranged to be rotated about its axis (A, B). The wheel (4) further includes a plurality of single disc cutters (11) mounted on the periphery of the drum (5), the single disc cutter (11) having a rotatable single cutting disc (11) arranged to come in contact with and crush the rock during excavation. The spacing of the projection of at least some of the cutting discs (11) on the drum axis (A, B) is 20% to 70% of the cutting disc diameter.
Claims20
A hydromill wheel for excavating a trench in hard rock, the wheel comprising:
- a drum arranged to be rotated about an axis extending laterally below a body of a hydromill;
- and
- a plurality of single disc cutters mounted on a periphery of the drum, each said single disc cutter having a rotatable single cutting disc, each said rotatable single cutting disc having a single cutting edge arranged to come in contact with and crush or cut the rock during excavation,
- wherein a spacing between projections of at least two consecutive cutting discs on the drum axis is 5% to 70% of the cutting disc diameter, and
- wherein a weight of the hydromill is supported by the single disc cutters at a bottom of the drum for cutting the rock disposed below the hydromill.
A method of excavating a trench in rock by use of a hydromill having at least one drum equipped with single disc cutters, the method comprising:
- rotating the drum about an axis by an engine, the axis extending laterally below a body of the hydromill;
- arranging a plurality of single disc cutters mounted on the periphery of the drum to come in contact with the rock, each said single disc cutter having a rotatable single cutting disc, each said rotatable single cutting disc having a single cutting edge arranged to come in contact with the rock;
- and
- lowering the drum into the rock such that a weight of the hydromill is supported by the single disc cutters on a bottom of the drum for creating fractures in the rock for excavating the rock, the spacing between at least two consecutive fractures being 10 mm to 70 mm.
Dependencies are inferred from the claim text.