Segmental shell for a coal crusher roll including specialized removal means
The patent describes a coal crusher having a cylindrical back-up roll having two ends, an outside face, a longitudinal axis, and a hub mounted in each end of the back-up roll. The coal crusher includes a combination of removable toothed segments mounted to the outside face of the roll and hook means including a tang for removing the segments from the roll. The coal crusher comprises metal segments, each of the segments in the form of a sector of a tube. The segment has an inside face and an outside face and an outside peripheral edge. The edge includes upper and lower axially extending edges, and two circumferential edges. The inside face of the segment has a radius of curvature substantially equal to the radius of curvature of the outside face of the back-up roll and has counterbored holes therein for receiving headed bolts which are threaded into tapped holes in the back-up roll to secure the segments to the back-up roll. Each of the counterbored holes has a seat to receive the heads of the bolts.
- Assignee:
- T.J. Gundlach Machine Co., Belleville, IL
- Patent Number(s):
- US 4617709
- OSTI ID:
- 7203885
- Resource Relation:
- Patent File Date: Filed date 5 Mar 1984
- Country of Publication:
- United States
- Language:
- English
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