Arrangement for extracting extraction products in underground extraction operations in caving

An arrangement for extracting extraction products in underground mining in caving, in which the extraction product after caving in an extraction face can be removed through at least one extraction funnel being arranged in the bottom rock of the extraction face and open to an extraction path developed underneath the face, whereas the extraction path extends transversely between a conveyor path having an extraction conveyor for the extracted extraction product and an auxiliary path running parallel thereto, the arrangement comprising a loading ramp with a ramp surface essentially transverse to the direction of extraction of the extraction conveyor and inclined thereto, the extraction path being provided with a rail guidance, firmly arranged on a bottom surface which extends in the area between the auxiliary path and the conveyor path and on which the loading ramp is guided and along which it is movable by a displacement drive in the direction of the conveyor and in the opposite direction, wherein the loading ramp comprises a clearing cylinder device with one or more clearing cylinders conveying in the direction of the extraction conveyor.

An arrangement for extracting extraction products in underground mining in caving, in which the extraction product after caving in an extraction face can be removed through at least one extraction funnel being arranged in the bottom rock of the extraction face and open to an extraction path developed underneath the face, whereas the extraction path extends transversely between a conveyor path having an extraction conveyor for the extracted extraction product and an auxiliary path running parallel thereto, the arrangement comprising a loading ramp with a ramp surface essentially transverse to the direction of extraction of the extraction conveyor and inclined thereto, the extraction path being provided with a rail guidance, firmly arranged on a bottom surface which extends in the area between the auxiliary path and the conveyor path and on which the loading ramp is guided and along which it is movable by a displacement drive in the direction of the conveyor and in the opposite direction, wherein the loading ramp forms a closing surface on its upper side with which it can be largely brought beneath the extraction funnel to close off the extraction funnel.

An arrangement for extracting extraction products in underground mining in caving, in which the extraction product after caving in an extraction face can be removed through of at least one extraction funnel being arranged in the bottom rock of the extraction face and open to an extraction path developed underneath the face, whereas the extraction path extends transversely of a conveyor path in a transverse direction, the arrangement comprising a loading ramp with a ramp surface essentially transverse to the direction of extraction of the extraction conveyor and inclined thereto and a securing frame, the loading ramp being positioned in the extraction path and being mounted to a moveable ramp frame such that the loading ramp and the ramp surface are selectively moveable in the transverse direction relative to the at least one extraction funnel, the selective movement being driven by a displacement drive which is in engagement between the ramp frame and a rail system fixed relative to the extraction path, the securing frame being positioned in front of the extraction funnel and in the extraction path in the area orientated towards the auxiliary path, the securing frame enclosing the loading ramp at the sides and at the top.

An arrangement for extracting extraction products in underground mining in caving, in which the extraction product after caving in an extraction face can be removed through at least one extraction funnel being arranged in the bottom rock of the extraction face and open to an extraction path developed underneath the face, whereas the extraction path extends transversely of a conveyor path in a transverse direction, the arrangement comprising a loading ramp with a ramp surface essentially transverse to the direction of extraction of the extraction conveyor and inclined thereto, the loading ramp being positioned in the extraction path and being mounted to a moveable ramp frame such that the loading ramp and the ramp surface are selectively moveable in the transverse direction relative to the at least one extraction funnel, the selective movement being driven by a displacement drive which is in engagement between the ramp frame and a rail system fixed relative to the extraction path, wherein the loading ramp further includes at least one of a protective cladding at the sides and a closing surface on its upper side, the closing surface being configured to at least partially close off the extraction funnel when the loading ramp is moved in the transverse direction such that the closing surface is positioned beneath the extraction funnel.