US 4,037,876 AGranted

Tightening arrangement for longwall mining machine cable and conveyor

AssigneeGewerkschaft Eisenhutte Westfalia

InventorsWerner Georg, Walter Heberling, Werner Langenberg

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Abstract

A longwall conveyor composed of channel sections arranged end-to-end and a scraper-chain assembly moved to transfer material along the channel sections has a main drive station at one end and an auxiliary drive station at the other end. Each drive station has a frame rotatably supporting a drum around which is entrained the scraper-chain assembly. Drive motor and gearing units are carried by the frames and drive the drums. At each drive station there is a housing in which a sprocket wheel drivably engages with a chain used to haul a plough or a similar machine along the conveyor. Drive motor and gearing units are supported by the housings and drive the sprocket wheels. The housing and sprocket wheel at the main drive station is slidably mounted on the frame and a piston and cylinder unit effects slidable displacement of the housing to vary the tension in the drive chain. The frame at the auxiliary drive station is also slidably mounted to a structure rigidly connected to the conveyor channel sections and supporting or forming the housing thereat. Piston and cylinder units effect slidable displacement of the frame to independently vary the tension in the scraper-chain assembly.

Claims22

Dependent claims

A mineral mining installation which comprises:

a scraper-chain conveyor with channel sections arranged end-to-end and a scraper-chain assembly movable along said channel sections;
drive stations at the ends of the conveyor for driving the scraper-chain assembly to effect transference of material along the channel sections of the conveyor and for driving a chain used to move a mining machine along the conveyor;
each drive station having a frame, drive means for driving the scraper-chain assembly and drive means for driving the chain;
each drive means for the chain comprising a drive motor and gearing unit supported by a housing in which is disposed a sprocket wheel drivably engaging with the chain and driven by said unit;
an intermediate connecting structure disposed between each frame and the adjacent endmost channel section of the conveyor and connected to the latter;
guide means to permit the housing at one of the drive stations to be slidably displaced in relation to the frame thereof and in relation to the associated connecting structure;
means for adjusting the tension in the drive chain;
said adjusting means comprising at least one hydraulic piston and cylinder unit operable to slide the housing at said one drive station along the frame and the connecting structure to thereby move the sprocket wheel engaging the chain and means at the other drive station for independently adjusting the tension in the scraper-chain assembly by displacing the frame and the scraper-chain assembly drive means of said other drive station.

5 more elements

A mineral mining installation which comprises:

a scraper-chain conveyor with channel sections arranged end-to-end and a scraper-chain assembly movable along said channel sections;
drive stations at the ends of the conveyor for driving the scraper-chain assembly to effect transference of material along the channel sections of the conveyor and for driving a chain used to move a mining machine along the conveyor;
each drive station having a frame, drive means for driving the scraper-chain assembly and drive means for driving the chain;
each frame rotatably supporting a drum with the scraper-chain assembly being entrained around the drums with each drive means for the scraper-chain assembly comprising a drive motor and gearing unit drivably connected to the associated drum;
each drive means for the chain comprising a drive motor and gearing unit supported by a housing in which is disposed a sprocket wheel drivably engaging with the chain and driven by said unit;
an intermediate connecting structure disposed between each frame and the adjacent endmost channel section of the conveyor and connected to the latter;
means at one of the drive stations for adjusting the tension in the drive chain by displacing at least part of the chain drive means in relation to the frame of said one drive station;
guide means for slidably guiding the frame of the other drive station for slidable displacement in relation to the associated connecting structure and means for independently adjusting the tension in the scraper-chain assembly;
said adjusting means comprising at least one piston and cylinder unit operable to displace the frame of the other drive station.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/636,419Filed 1 Dec 1975
Priority: DT 24577906 Dec 1974
Granted: 26 Jul 1977
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B65G 23/44
Driving gear for endless conveyors; Belt- or chain-tensioning arrangements: belt or chain tensioning arrangements
E21C 29/14
By cable or chains: by haulage cable or chain pulling the machine along the working face
E21C 35/12
Guiding the machine: along a conveyor for the cut material
E21F 13/068
Scraper chain conveyors: special adaptations for use at the junction of the working face with the gallery, e.g. driving stations coupled to the…