Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent
1979-07-25
1981-06-16
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Sidewall-working
299 12, E21C 3504, E21C 2920
Patent
active
042733855
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/.
REFERENCES:
patent: 3602549 (1971-08-01), Renzing et al.
patent: 3784256 (1974-01-01), Katlic
patent: 4025118 (1977-05-01), Lanfermann et al.
Politechnika Slaska im. Wincentego Pstrowskiego
Purser Ernest R.
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