Tunnel excavation apparatus
AssigneeTrevi S.p.A.
InventorDavide Trevisani
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Abstract
A tunnel excavation apparatus comprises a frame mounted on crawler tracks and provided with pistons comprising stabilizer feet, a power unit, a working unit, and auxiliary movement and positioning services. The working unit is arranged on an arm mounted on one end of telescopic uprights, which are hinged at their other ends to the frame about an axis substantially parallel to the longitudinal direction of the machine, and consists of a rectilinear rigid structure, at the perimeter of which excavation tools are arranged on a chain, to circulate along the side and front of the structure. The tools are hinged to a caisson open on the side opposite the hinged side and provided with apparatus for conveying concrete into its interior.
Claims8
A tunnel excavation apparatus comprising a frame mounted on crawler tracks and provided with pistons comprising stabilizer feet, a power unit operating at least one working unit, and auxiliary movement and positioning services, the working unit being arranged on an arm mounted on one end of telescopic uprights, which are hinged at their other ends to the frame about an axis substantially parallel to the longitudinal direction of the machine, characterized in that the working unit comprises a rectilinear rigid structure, at the perimeter of which excavation tools are arranged on a chain, to circulate along the side and front of the structure, there being hinged to the side of said working unit, on an axis substantially parallel to the structure, a caisson open on the side opposite the hinged side and provided with means for conveying concrete into an interior of said caisson.
Dependencies are inferred from the claim text.