Supporting and rotational resetting device on a tunnel-driving machine

Claim 2

A combined tunnel driving machine supporting-and-rotationalresetting device comprising a support carrier including a central cylindrical-supporting-sleeve for rotatably supporting the housing of a tunnel driving machine, extensible-foot means on said carrier, means associated with said feet for extending said feet to engage them within the tunnel for supporting said device, and drive means mounted on said carrier and adapted to be connected to said machine frame and being movable for rotationally shifting said machine frame within said carrier, said drive means comprising a fluid-pressure cylinder arranged on each side of said carrier and on each side of the center of said machine frame, a bracket adapted to be connected to said machine frame and having a central pivotal point located between said fluid- pressure cylinders, each of said cylinders including a piston rod articulated to said central pivotal point on said bracket, said piston rod being shiftable for rotating said machine frame in a selected direction.

Claim 3

A device according to claim 1 said foot means includes, a plurality of extensible feet, a fluid-pressure-operated cylinder associated with each of said feet, a piston slidable in said cylinder and connected to and associated with respective ones of said feet, said piston being movable to extend said feet.

Claim 4

A device according to claim 2, wherein there is one of said feet arranged on each side of the central line of said carrier and which move vertically.

Claim 5

A device according to claim 3, including a bridge member slidable along the tunnel with said device and being locatable below said feet to permit engagement of the feet therewith for supporting said carrier.

Claim 6

A combined tunnel driving machine supporting- supporting-and-rotational-resetting device comprising a support carrier including a central cylindrical-supporting sleeve for rotatably supporting the housing of a tunnel driving machine, extensible foot means on said carrier, means associated with said feet for extending said feet to engage them within the tunnel for supporting said device, drive means mounted on said carrier and adapted to be connected to saiD machine frame and being movable for rotationally shifting said machine frame within said carrier, a machine frame rotatably supported in said carrier, a tunnel driving tool mounted for rotation on said machine frame, a bracket connected to said machine frame and extending outwardly therefrom, said drive means comprising a piston rod extending on each side of said bracket and articulated to a common point on said bracket, and fluid-cylinder means associated with each of said piston rods for shifting said bracket with said machine frame for rotating said machine frame within said carrier.

Claim 7

A combined tunnel driving machine supporting- supporting-and-rotational-resetting device comprising a support carrier including a central cylindrical-supporting sleeve for rotatably supporting the housing of a tunnel driving machine, extensible foot means on said carrier, means associated with said feet for extending said feet to engage them within the tunnel for supporting said device, drive means mounted on said carrier and adapted to be connected to saiD machine frame and being movable for rotationally shifting said machine frame within said carrier, a machine frame rotatably supported in said carrier, a tunnel driving tool mounted for rotation on said machine frame, a bracket connected to said machine frame and extending outwardly therefrom, said drive means comprising a piston rod extending on each side of said bracket and articulated to a common point on said bracket, and fluid-cylinder means associated with each of said piston rods for shifting said bracket with said machine frame for rotating said machine frame within said carrier.