Longwall mining machine

Details Longwall mining machine Longwall mining machine

1977-12-12

1979-05-22

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Sidewall-working

299 53, 299 86, 241189R, E21C 3520

Patent

active

041555988

ABSTRACT:
A longwall mining machine incorporates breaking apparatus comprising an underframe which may be an integral extension of the main underframe of the machine and which is mounted on the conveyor for movement therealong, such that the breaking apparatus is rigidly secured to, and comprises an integral part of, the mining machine. The breaking apparatus also comprises a rotary breaking element drivably carried by the breaker underframe and a reaction plate, for example, on the same underframe, which is spaced from an adjacent periphery of the breaking element. In use, material, such as coal and rocks, on the conveyor passing between the rotary element and the reaction plate is broken against the reaction plate by the rotating breaking element. In this way, the coal and rocks are broken down to a sufficiently small size that they will not become jammed under the main underframe of the mining machine.

REFERENCES:
patent: 3191452 (1965-06-01), Lipski et al.
patent: 3857520 (1974-12-01), Ducasse
patent: 3907367 (1975-09-01), Nakajima
patent: 3945680 (1976-03-01), Henrich et al.

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