Mine roof support assembly
AssigneeGewerkschaft Eisenhutte Westfalia
InventorsKunibert Becker, Burckhardt Elsner, Rudiger Kirchbrucher
Life of this patent
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Abstract
A mobile mine roof support assembly has three mine roof support units coupled together by a common transverse beam. Roller devices are mounted beneath the floor sills of the support units. The roller devices are spring biased away from their floor sills so that they can lift the floor sills away from the floor of a working when the assembly is to be moved. At least one roller device of each support unit is a steerable roller device so that the assembly can be steered round bends. Each steerable roller device is pivotally mounted on its floor sill about a vertical axis, and is provided with an associated steering device. The steerable roller devices are preferably coupled together by means of a common steering device.
Claims20
A mine roof support assembly comprising at least two mine roof support units positioned side-by-side and coupled to a common transverse beam, each of the roof support units having a floor sill, and each of the floor sills including floor-engageable roller means, wherein each of the roller means includes a steerable roller device, each steerable roller device being pivotally mounted on the associated floor sill about a pivot axis which lies at right-angles to the plane of that floor sill, and wherein the steerable roller devices are coupled together and are steerable by a common steering device which enables the support assembly to negotiate right-angled turns.
Dependencies are inferred from the claim text.