Degradation insert with overhang
View Patent ↗In one aspect of the invention, a cone crusher has at least one crushing surface disposed on either a cone and/or an inverted bowl of the crusher. The crushing surface has at least one insert having an impact head with a stem protruding from a base end of the head. The stem has a smaller cross sectional thickness than the head.
1. A cone crusher comprising;
at least one crushing surface disposed on either a cone and/or an inverted bowl of the crusher;
the crushing surface comprising at least one insert comprising an impact head with a stem protruding from a base end of the head, the stem being pressed into a cavity of the crushing surface;
the stem and head being made of dissimilar material, and the material of the stem having a coefficient of thermal expansion greater than a coefficient of thermal expansion of the material of the head;
an overhang formed by the base end of the insert contacts the crushing surface and protects a region of the surface;
the stem comprises a smaller cross sectional thickness than the head.
2. The crusher of claim 1 , wherein the stem and head are made from the same material.
3. The crusher of claim 1 , wherein the stem is press fit into a cavity formed in the crushing surface.
4. The crusher of claim 3 , wherein a material of the stem has a coefficient of thermal expansion equal to or greater than a coefficient of thermal expansion of a material of the cavity.
5. The crusher of claim 1 , wherein a plurality of inserts are packed in proximity to each other on the crushing surface.
6. The crusher of claim 1 , wherein the insert comprises at least one flat to accommodate packing.
7. The crusher of claim 1 , wherein the insert is threaded into a cavity formed in the crushing surface.
8. The crusher of claim 1 , wherein the impact head comprises a plurality of layered materials.
9. The crusher of claim 1 , wherein the stem and head are interlocked.
10. The crusher of claim 9 , wherein the stem comprises a collar at a second end of the stem adapted to be press- fitted within a cavity formed in the crushing surface.
11. The crusher of claim 9 , wherein the head comprises a recess formed in its base end and is adapted to interlock with the stem.
12. The crusher of claim 11 , wherein the stem comprises a locking mechanism adapted to interlock a first end of the stem within the recess.
13. The crusher of claim 1 , wherein a locking fixture is disposed within a cavity formed in the crushing surface and locks the stem to a wall of the cavity.
14. The crusher of claim 1 , wherein the base end of the head comprises an upward extending taper.
15. The crusher of claim 14 , wherein a cavity formed in the crushing surface comprises a seat complimentary to the base end of the head.
16. A crusher comprising;
at least one crushing surface;
the crushing surface comprising at least one insert comprising an impact head with a stem protruding from a base end of the head, the stem being pressed into a cavity of the crushing surface;
the stem and head being made of dissimilar material, and the material of the stem having a coefficient of thermal expansion greater than a coefficient of thermal expansion of the material of the head;
an overhang formed by the base end of the insert contacts the crushing surface and protects a region of the surface;
wherein the stem comprises a smaller cross sectional thickness than the head.