Device for safety guiding of hauling chain especially at ranging drum shearer in coal mining

Abstract

A device for safety guiding of hauling chain, especially for a ranging drum shearer in coal mining equipment having chain haulage means, consists of chain screening /5/ at a guard /6/ of conveyor /7/ and of chain guides /11/ fixed to a ranging shearer /1/, wherein said guides /11/ travel along the route of conveyor /7/ inside the screening placed at chain guard /6/. The screening of hauling chain /5/ is confined by screening plates /12/, /13/ and /14/ at the upper part of chain guard /6/, having its uncovered side closed by screening end /20/ of a double end lever /15/, pivoted in hub /16/ below the lower screening plate /12/. The retaining end /20/ of double end lever /15/ is closed by the tension of spring /17/, attached by one end to the retaining end /18/ of lever /15/ and by another to a grip /19/ fixed to the body of the guard /6/. Alternatively, the screening of hauling chain /5/ is placed at the lower part of guard /6/ and confined by a guiding pipe /10/ together with screening plates /26/ and /27/, wherein the uncovered screening side is closed by double end lever /28/ pivoted on journal /29/ which is fixed to the body of guard /6/. The double end lever /28/ is closed by tension of the spring /30/, attached at one of its ends to a retaining end /31/ and at its other end to the grip /33/ fixed to the body of guard /6/.

Dependencies are inferred from the claim text.