Mineral mining installation with chain-tensioning system

Details Mineral mining installation with chain-tensioning system Mineral mining installation with chain-tensioning system

1991-07-22

1992-12-15

Bagnell, David J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Cutter attached to endless chain or cable

198517, 198520, 299 43, 474113, E21C 2916

Patent

active

051710650

ABSTRACT:
A plough box containing a chain wheel driving a chain to propel a chain used to move a plough is mounted for displacement alongside a machine frame at one end of a scraper-chain conveyor. To adjust the tension in the chain a motor is operated to drive a self-locking worm gearing which employs a worm wheel meshing with a rack fixed to the machine frame and extending in the direction of the chain.

REFERENCES:
patent: 3790210 (1974-02-01), Georg
patent: 3809431 (1974-05-01), Nakajima
patent: 4037876 (1977-07-01), Georg et al.
patent: 4548444 (1985-10-01), Brever et al.
patent: 4826469 (1989-05-01), Cooley

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