Segmental shell for a coal crusher roll
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United States of America Patent
Stats
-
Feb 28, 1989
Issued Date -
N/A
app pub date -
Aug 11, 1986
filing date -
Mar 5, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coal crusher roll includes a smooth tubular cylindrical back-up roll having a series of regularly spaced tapped radial holes to receive bolts by which eight identical shell segments may be fastened on the back-up roll. The holes at the axial ends of the segments are undercut to provide a rabbet into which fits the tang of a special lifting hook by which the segment can be easily handled by a lightweight crane. A recess in the central part of the segment defined by a peripheral berm around the backside of the segment reduces the weight of the segment, provides a place for receiving balancing weights, and simplifies the face fit machining for the segment with the back-up roll.
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