Tunnel driving apparatus with cutter arms internal and external of support tube
AssigneeGewerkschaft Eisenhutte Westfalia
InventorWilhelm Stoltefuss
Life of this patent
Estimating the term…
Abstract
Tunnel driving apparatus employs a hollow support tube positioned axially centrally inside a drive shield. An inner cutting machine is supported and positioned inside the support tube and serves to cut away a central region of a working face. Outer cutting machines are also supported by the support tube but on the exterior thereof. The outer cutting machines serve to cut away the outer region of the working face. The cutting machines may each have a pivotable arm carrying cutting drums and are supported and guided for axial and rotary motion relative to the support tube.
Claims17
In a shield-type tunnelling apparatus having a shield containing a hollow support means with a first cutting appliance equipped with a first cutting means for removing material from a first working face, said first cutting appliance being mounted and supported interiorly of said support means, the improvement comprising:
- said support means having a tubular configuration;
- said first cutting appliance being provided with a pivotal first arm movably carrying said first cutting means for effecting removal of material from a central region of the working face;
- and at least a second cutting appliance mounted by bearing means arranged externally on said support means to permit said second cutting appliance to move around said support means, said second cutting appliance having a pivotal second arm movably carrying a second cutting means for effecting removal of material from an outer region of the working face.
Tunnel driving apparatus comprising a shield, a tubular body constituting machine support means disposed within said shield, a first cutting machine with a pivotable jib carrying cutting means, a support mounting a pivot joint for the jib of the first cutting machine, means for pivoting the jib of the first cutting machine relative to the support, a bearing mounting the support for rotation about the axis of the tubular body, means for effecting rotation of said support, guide means guiding the bearing for movement within the tubular body and parallel to the axis of the tubular body, means for displacing the bearing and hence the first cutting machine relative to the guide means, further cutting machines each with a pivotable jib carrying cutting means, a support mounting a pivot joint for the jib of each further machine, means for pivoting the jib of each further cutting machine relative to its associated support, a bearing ring external to the tubular body locating the support of each further machine for rotation about the tubular body, means for effecting rotation of the supports of each further machine and means for displacing the bearing ring and hence the further cutting machines in a direction parallel to the axis of the tubular body.
Dependencies are inferred from the claim text.