Mineral mining installation
AssigneeGewerkschaft Eisenhutte Westfalia
InventorsLubomir Plevak, Walter Weirich
Life of this patent
Estimating the term…
Abstract
A longwall mineral mining installation has a longwall conveyor and a plurality of roof support units positioned side-by-side at the goaf side of the conveyor. The hydraulic appliances of the roof support units, such as their hydraulic props, hydraulic advance rams and hydraulic control valves, are supplied with pressurized hydraulic fluid from hydraulic supply lines which run along the goaf side of the conveyor. A plurality of flat, plate-like intermediate members are provided at the goaf side of the conveyor. These intermediate members are formed with internal ducts for feeding the hydraulic fluid from the supply lines to the hydraulic appliances of the roof support units.
Claims13
A mineral mining installation comprising a conveyor, a plurality of hydraulically-operated roof support units positioned side-by-side at one side of the conveyor, hydraulic supply lines running along said one side of the conveyor, and a plurality of elongate, flat, plate-like intermediate members positioned at said one side of the conveyor, the intermediate members each being provided with a plurality of longitudinally-extending internal bores for feeding hydraulic fluid from the supply lines to the roof support units, wherein each internal bore is provided with a port at each end thereof, one of said ports being hydraulically connected to one of said hydraulic lines by a flexible hose, the other of said ports being hydraulically connected to one of said roof support units by another flexible hydraulic hose, and wherein the ports are sockets projecting from the upper surfaces of the intermediate members.
A roof support unit for a mineral mining installation, the roof support unit having a roof shield supported on a floor sill by hydraulic props, and an intermediate member associated with the floor sill, the intermediate member being provided with a plurality of longitudinally-extending internal bores for feeding hydraulic fluid to the roof support unit, wherein each internal bore is provided with a port at each end thereof, one of said ports being hydraulically connected to a hydraulic supply line by a flexible hose, the other of said ports being hydraulically connected to the roof support unit by another flexible hydraulic hose, and wherein the ports are sockets projecting from the upper surface of the intermediate member.
Dependencies are inferred from the claim text.