Gewerkschaft Eisenhutte Westfalia, Gmbh

Alfred Marquart

Gerhard Merten

Bernd Steinkuhl

Christoph Rassmann

A mobile conveyor installation is composed of a carrier frame composed of channels joined end-to-end on which a scraper-chain conveyor is mounted. Drive stations are provided at the ends of the conveyor and the frame and one or both of these have driven tracks for moving the installation. The conveyor and carrier frame can adopt a curved profile. A guide beam composed of articulated plates which can be braced and locked or released serves to guide the carrier frame and the conveyor. The guide beam is connected with rams to the conveyor or the carrier frame to effect relative longitudinal movement therebetween. The guide beam is raisable and lowerable from contact with the floor either directly or via the carrier frame. The plates of the beam are coupled to a traction chain which can be tensioned or slackened with a hydraulic unit to cause the plates of guide beam to become rigid for guidance or released for movement.

Conveyor installations

A coal wining plough in a longwall working employs adjustable floor cutters mounted on curved carriers displaced in guideways on the body of the plough. Wedges abut on the upper ends of the carriers and are moved by hydraulic piston and cylinder units to set the position of the floor cutters and define the cutting level adopted by the plough. The units are operated with the aid of valves which respond to an electronic control device. Command signals from a remote control station are transmitted as by a radio to the plough to set up the electronic control device. Sensors on the plough provide electrical signals representing the position of the interface between the coal face and the floor and these signals are transmitted back to the control station. In a control sequence the plough runs along the seam and the sensor(s) provide signals relayed to the control station which also receives signals representing the distance moved by and/or the position of the plough. On a succeeding run the control station provides the control of the leading floor cutter in accordance with a control program.

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Munich, Georgia

Alfred Marquart