Methods of controlling the operation of mineral mining installations
AssigneeGewerkschaft Eisenhutte Westfalia
InventorsUwe Trox, Willy Kussel
Life of this patent
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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.
Claims6
In a mineral mining installation in which a winning machine is moved along a longwall conveyor composed of individual channel sections to win mineral from a face alongside the conveyor and the conveyor is advanced towards the face behind the machine as it progresses along the face by charging shifting rams with hydraulic pressure fluid;
- an improved method of control comprising operationally dividing the ram into a plurality of bank-push groups, connecting a predetermined number of rams forming a sliding group within a bank-push group with a pressure fluid supply simultaneously for a preselected time, disconnecting one of the rams remote from the winning machine from the supply and connecting a ram which is the next following within the bank-push group and nearest the machine to the supply to replace said one remote ram and maintain the predetermined number of rams and repeating this cycle to cause the sliding group to progress within the bank-push group and follow the progress of the machine.
Dependencies are inferred from the claim text.