Advancing system for coal winning machine
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United States of America Patent
Stats
-
Sep 6, 1988
Grant Date -
N/A
app pub date -
Oct 15, 1986
filing date -
Oct 16, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The advancing system for a coal winning machine comprises a guide installed along a face conveyor, and an advancing mechanism connected with the machine. The advancing mechanism is accommodated in a separate housing and has at least two successively communicating pairs of advancing hydraulic cylinders with slides hinged to each of said cylinders. The guide is provided with rack-type engagement elements and secured to the end heads of the face conveyor. Each one of the slides has grips for holding on the guide, and a hydraulic cylinder. Each hydraulic cylinder of the slides is connected to its fixing bar the latter being installed with a provision for being arranged and fixed between the engagement elements of the guide.
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