Mining apparatus for mechinized breaking-down of mineral materia

Details Mining apparatus for mechinized breaking-down of mineral materia Mining apparatus for mechinized breaking-down of mineral materia

1989-09-22

1991-03-26

Britts, Ramon S.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Cutter attached to endless chain or cable

475 7, E21C 2916, F16H 5522

Patent

active

050023411

ABSTRACT:
A mining apparatus for coal with an endless chain revolving around chain wheels. A main drive is provided for one of the chain wheels and an auxiliary drive is provided for the other chain wheel. A transmission stage of the auxiliary drive is a superposed transmission unit. A controllable superposed motor with a worm gear transmission unit acts on the superposed input of the superposed transmission unit. The worm gear transmission unit includes two drive worms which are offset relative to each other by 180.degree. and mesh with the superposed input of the superposed transmission unit. As a result, the supporting moment load and the torque load or power distribution are cut in half, so that the worm gear transmission unit is not susceptible to trouble.

REFERENCES:
patent: 1594394 (1926-08-01), Weston
patent: 2422343 (1947-06-01), Duer
patent: 3364789 (1968-01-01), Whitfield

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