Apparatus for controlling the position of a mineral mining machi

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working

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299 34, E21C 2732

Patent

active

044589514

ABSTRACT:
Apparatus for controlling the position of a mineral winning machine, such as a plough, movable along a guide at the mineral face side of a scraper-chain conveyor employs a connector bracket at the goaf side of the conveyor to which a floor-engaging skid plate is pivotably linked. A beam extends from a roof support and is also pivotably connected to the skid plate remote from the conveyor. A pair of piston and cylinder units are pivotably connected at their upper ends to the bracket. One of the units is pivotably connected to the skid plate and the other is pivotably connected to the beam. By operating the units together the skid plate can be held against the floor over part or all of its lower face while the conveyor goaf side is raised or lowered accordingly.

REFERENCES:
patent: 3847438 (1974-11-01), Huttenbrauck et al.
patent: 4045089 (1977-08-01), Hauschopp et al.
patent: 4186969 (1980-02-01), Beckmann
patent: 4200338 (1980-04-01), Beckmann
patent: 4280734 (1981-07-01), Blumenthal et al.

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