Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
Patent
1992-11-23
1994-05-03
Bagnell, David J.
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Tooth mounted on helical head portion or head with helical...
37189, E21B 1012, E21C 2510
Patent
active
053081510
ABSTRACT:
Mining apparatus is disclosed in which a cutting wheel supporting a plurality of roller-cutters rotates about a horizontal axis and is supported on a slewing boom for cutting a tunnel with a flat floor and roof and elliptical walls as it slews across a mining face. The slewing boom is supported on a main beam assembly, the front end of which rests on powered crawler tracks and the rear end of which passes through a gripper assembly which may be clamped between the floor and roof of the tunnel, and against which the main beam assembly may be urged forward for engaging the roller-cutters with the mining face. A preload crawler is urged against the roof of the tunnel above the powered crawler tracks to locate the main beam assembly rigidly relative to the tunnel such that the roller-cutters may cut the rock in the mining face with minimal loss of cutting force due to vibration.
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Handbook of Mining and Tunnelling Machinery by Barbara Stack (1982), pp. 275-277, relating to Krupp Tunneling Machine Model KTF340.
Continuous Surface Mining, from the Proceedings of International Symposium Edmonton Sep. 29-Oct. 1, 1986, Trans Tech Publications, 1987, pp. 211 and 213, relating to the Krupp SchRs 650/5/28 BWE Excavator and 700 I BWE Excavator.
Sugden David B.
Turner John
Bagnell David J.
Z C Mines Pty Ltd.
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