Methods of controlling the operation of mineral mining installat

Details Methods of controlling the operation of mineral mining installat Methods of controlling the operation of mineral mining installat

1986-05-29

1987-11-24

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

299 43, 405302, E21D 2312

Patent

active

047083948

ABSTRACT:
As is known mineral, e.g. coal, is won from a mineral face with the aid of a winning machine guided for movement along a conveyor composed of individual pans joined end-to-end. The conveyor is advanced towards the face behind the machine by shifting rams linked to the pans. In accordance with the invention, the rams are connected to and disconnected from a supply of pressure fluid in a controlled manner to form a group composed of a predetermined number of rams which are simultaneously charged with pressure fluid and this group progresses along the working behind the machine step-by-step in a sliding fashion within and over larger bank-push groups of rams.

REFERENCES:
patent: 3243964 (1966-04-01), Thomas et al.
patent: 3246730 (1966-04-01), Bolton et al.
patent: 3285015 (1966-11-01), Carnegie et al.
patent: 4099781 (1978-07-01), Sawayama et al.
patent: 4146271 (1979-03-01), Ward et al.
patent: 4451089 (1984-05-01), Paurat et al.
patent: 4451181 (1984-05-01), Trumper et al.

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