Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means
Patent
1991-06-17
1993-04-27
Bagnell, David J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Stepper-type advance-causing means
299 33, 405138, 405142, E21C 2900, E21D 908
Patent
active
052056139
ABSTRACT:
A tunnel boring machine includes a cutterhead having a plurality of cutting units and being rotatable on a machine frame. Two sets of three anchor shoes float relative to the frame and are disposed circumferentially, with the anchor shoes of the two sets alternating on the frame. The two sets of three anchor shoes allow continuous advance of the tunnel boring machine. Connection between the two sets of anchor shoes and the frame is provided by two sets of three thrust cylinder bipods. One set of three thrust cylinder bipods is connected to each set of three floating anchor shoes, with one bipod attached to each anchor shoe. All of the anchor shoes in each set are interconnected by three pairs of floating gripper cylinders, with each pair of gripper cylinders longitudinally spaced on the two anchor shoes that they connect. Each of the two sets of three anchor shoes is sequentially gripped and ungripped with the tunnel wall by the attached gripper cylinders and independently of the other set of anchor shoes. The ungripped set of three anchor shoes and the frame are advanced with respect to the gripped set of three anchor shoes by the three thrust cylinder bipods connected to the gripped set of three anchor shoes.
REFERENCES:
patent: Re31511 (1984-01-01), Spencer
patent: 3203737 (1965-08-01), Robbins et al.
patent: 3295892 (1967-01-01), Winberg et al.
patent: 3861748 (1975-01-01), Cass
patent: 3967463 (1976-07-01), Grandori
patent: 4420188 (1983-12-01), Robbins et al.
patent: 4548443 (1985-10-01), Turner
patent: 4915453 (1990-04-01), Fikse
patent: 5005911 (1991-04-01), Fikse
Traylor Brothers, Inc. Drawings dated about Dec. 4, 1981 Entitled: 92-192-1 Stillwater Modifications; 92-192-2 Stillwater Modif. Utilizing Temp. Support; 92-192-3 Propel Sequence; 92-192-4 TBM Hydraulic Schematic; 92-192-5 Blade Skewing and Spiling.
Bagnell David J.
The Robbins Company
LandOfFree
Tunnel boring machine with continuous forward propulsion does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tunnel boring machine with continuous forward propulsion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunnel boring machine with continuous forward propulsion will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2322239