Grinding roller
AssigneeMagotteaux International S.A.
InventorXavier Prignon
Life of this patent
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Abstract
A grinding roller for vertical axis crushers is disclosed herein that is produced by foundry casting of a metal matrix. The roller includes a plurality of reinforcing inserts on its periphery, wherein some portions of the peripheral surface of a same insert are located at a distance d1 or d2 from the work surface depending on wear stresses. Accordingly, the roller has at least one zone experiencing high wear stress Z1, with at least one portion of the insert positioned at a distance d1 near the work surface of said roller; and a zone with low wear stress Z2, with a portion of the insert positioned at a distance d2 that is set back relative to the work surface of the roller. In some examples, distance d1 is less than distance d2.
Claims20
A grinding roller for vertical axis crushers produced by foundry casting of a metal matrix, said roller comprising:
- a plurality of reinforcing inserts embedded in the grinding roller, such that each of the plurality of reinforcing inserts includes a peripheral surface disposed beneath an original outer surface of the grinding roller, wherein some portions of the peripheral surface of a same one of the plurality of reinforcing inserts are set back from the original outer surface of the roller based on expected wear stresses, such that the roller includes:
- at least one first zone configured to experience high wear stress, wherein the first zone has a first portion of the peripheral surface of the same insert set back relative to the original outer surface of the roller by a distance d1;
- and
- a second zone configured to experience low wear stress, wherein the second zone has a second portion of the peripheral surface of the same insert set back relative to the original outer surface of the roller by a distance d2;
- wherein d1 is less than d2.
A grinding roller for vertical axis crushers produced by foundry casting of a metal matrix, said roller comprising:
- a plurality of reinforcing inserts disposed on a periphery of the grinding roller, each of the plurality of reinforcing inserts including a peripheral surface disposed proximate an original work surface of the grinding roller, wherein some portions of the peripheral surface of a same one of the plurality of reinforcing inserts are located at a distance d1 or d2 from the original work surface of the roller based on expected wear stresses, such that the roller includes:
- at least one first zone experiencing high wear stress, wherein the first zone has a first portion of the peripheral surface of the same insert positioned at distance d1 set back relative to the original work surface of the roller;
- and
- a second zone experiencing low wear stress, wherein the second zone has a second portion of the peripheral surface of the same insert positioned at distance d2 set back relative to the original work surface of the roller;
- wherein d1 is less than d2.
Dependencies are inferred from the claim text.