Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable
Patent
1988-11-07
1990-05-01
Massie, IV, Jerome W.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Cutter attached to endless chain or cable
74665B, 299 48, E21C 2734, E21C 2916
Patent
active
049213075
ABSTRACT:
A mining apparatus for the mechanized breaking-down of mineral raw materials, particularly coal, in underground mining operation includes at least one endless chain and chain wheels for the endless chain. A main drived is provided for one of the chain wheels and an auxiliary drive is provided for the other chain wheel. The main drive and the auxiliary drive each has a transmission unit including main transmission stage, initial transmission stage, coupling and drive motor. A superposed motor in the form of a controllable electric motor having small power acts in connection with a worm gear transmission on the superposed input of the superposed transmission unit. Synchronous running of the main drive and the auxiliary drive or the drive motors thereof is achieved by a unilateral drive control. This results in a uniform power and load input independently of the wear of the chain and chain wheels.
REFERENCES:
patent: 2970442 (1961-02-01), Taylor
patent: 3721378 (1973-03-01), Hughes et al.
Braun Ernst
Braun Gert
Bagnell David J.
Halbach & Braun Industrieanlagen
Massie IV Jerome W.
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