Haulage unit of a coal-getting machine
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United States of America Patent
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-
Jul 4, 1989
Grant Date -
N/A
app pub date -
Mar 30, 1988
filing date -
Aug 4, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A haulage unit of a coal-getting machine comprises a drive (1) an output shaft of which is associated with a conveyor (2) through the medium of a kinematic linkage. The kinematic linkage incorporates a sprocket (3) installed on the output shaft and meshing elements (4) coming in mesh with teeth of the sprocket (3). The meshing elements (4) are installed for rotation about the axis thereof and for a limited longitudinal displacement in a guide (5). The guide (5) is essentially presented by links articulated to one another. Each link is installed on a carrying element (7) secured on the conveyor (2) and is formed by two arcuate elements (8,9) facing each other by concave portions thereof, and connected in a diametrical plane by at least two fastening members (10) so that a clearance (11) is formed between the arcuate elements. Each fastening member (10) mounts the meshing element (4) in the form of a rolling body. The haulage unit comprises at least two grips (14, 15) installed at a definite distance from each other, secured on the driven (1) and cooperating with each link of the guide (5). One grip (14) is disposed in a zone where a sprocket tooth cooperates with the meshing element (4).
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