Crushing shell with profiled crushing surface

Patent metadata

Field	Value
Publication number	US-10537895-B2
Application number	US-201414900292-A
Country	US
Kind code	B2
Filing date	May 22, 2014
Priority date	Jun 27, 2013
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

A gyratory crusher crushing shell having a mount face for contacting a support region of the crusher and a crushing face to contact material to be crushed and passing through the crushing zone. The crushing shell includes a plurality of wedges project radially from the crushing surface, the wedges being spaced apart in a circumferential direction around the axis to define channels extending axially between the wedges.

First claim

The invention claimed is:

1. A gyratory crusher inner crushing shell comprising:
a main body mountable within a crushing zone defined by a frame of a gyratory crusher, the main body extending around a central longitudinal axis, the main body having a mount surface for positioning opposed to the frame or a crusher head movably mounted within the crushing zone and a crushing surface arranged to contact material to be crushed, a wall defined by and extending between the mount and crushing surfaces, the wall having an axially upper first end and an axially lower second end;
a plurality of wedges projecting radially outward at the crushing surface and distributed in a circumferential direction around the central longitudinal axis, each of the plurality of wedges extending axially downward in an axial direction from below an axially upper region of the axially upper first end, and each of the plurality of wedges being terminated in the circumferential direction by a pair of lengthwise shoulders; and
a plurality of axially extending channels defined by and positioned in the circumferential direction between the shoulders of opposed wedges, wherein the crushing surface at the region of each of the plurality of wedges has a concave shaped profile in the axial direction, each of the plurality of wedges being positioned below the axially upper region so as to not extend into an axially lower region of the crushing surface.

2. The crushing shell as claimed in claim 1 , wherein a radial distance of the crushing surface relative to the central longitudinal axis at an axial position of the wedges and channels increases and decreases according to an alternating profile in the circumferential direction around the central longitudinal axis.

3. The crushing shell as claimed in claim 2 , wherein the wedges extend axially to a region halfway between the axially upper first end and the axially lower second end, such that the axially lower region of the shell is devoid of the wedges and the channels.

4. The crushing shell as claimed in claim 1 , wherein a radial distance between the crushing surface of each wedge of the plurality of wedges and the crushing surface of each channel decreases in the axially downward direction from the region of the axially upper first end to the axially lower second end.

5. The crushing shell as claimed in claim 1 , wherein the wall includes a radial thickness that is uniform at a region of each wedge in the axial direction from the region of the axially upper first end to the axially lower second end.

6. The crushing shell as claimed in claim 1 , wherein a radial thickness of each wedge or the wall is uniform in the circumferential direction between the shoulders.

7. The crushing shell as claimed in claim 1 , wherein a radial thickness of the wall at each channel is uniform in the circumferential direction between the shoulders.

8. The crushing shell as claimed in claim 7 , wherein each side surface has a concave curvature arranged to provide a transition between the crushing surface and each wedge and the crushing surface of each channel.

9. The crushing shell as claimed in claim 1 , wherein a width of each channel in the circumferential direction around the central longitudinal axis is substantially equal to a width of each wedge in the circumferential direction around the central longitudinal axis.

10. The crushing shell as claimed in claim 1 , wherein a width of each wedge in a circumferential direction around the central longitudinal axis increases in the axial direction from the region of the first to the second end.

11. The crushing shell as claimed in claim 1 , comprising between three to ten wedges distributed circumferentially around the central longitudinal axis.

12. The crushing shell as claimed in claim 1 , wherein the crushing shell is an outer crushing shell arranged for being positioned opposed to the frame such that the wedges are provided at a radially inward facing surface of the outer crushing shell.

13. The crushing shell as claimed in claim 12 , wherein a thickness of the wall is uniform in the circumferential direction around the axis within the axially upper region.

14. The crushing shell as claimed in claim 1 , wherein the crushing shell is an inner crushing shell arranged for being positioned opposed to the crusher head and the wedges are provided at a radially outward facing surface of the inner crushing shell.

15. The crushing shell as claimed in claim 1 , further comprising a plurality of recesses disposed in the mount surface, each of the plurality of recesses having a position corresponding to a position directly behind a respective one of the plurality of wedges.

16. A gyratory crusher comprising:
a frame;
a crushing zone defined by the frame;
a crusher head; and
at least one inner crushing shell, the inner crushing shell including a main body mountable within the crushing zone, the main body extending around a central longitudinal axis, the main body having a mount surface for positioning opposed to the frame or the crusher head movably mounted within the crushing zone and a crushing surface arranged to contact material to be crushed, a wall defined by and extending between the mount and crushing surfaces, the wall having an axially upper first end and an axially lower second end, a plurality of wedges projecting radially outward at the crushing surface and distributed in a circumferential direction around the central longitudinal axis, each of the plurality of wedges extending axially downward in an axial direction from below an axially upper region of the axially upper first end, and each of the plurality of wedges being terminated in the circumferential direction by a pair of lengthwise shoulders, and a plurality of axially extending channels defined by and positioned in the circumferential direction between the shoulders of opposed wedges wherein the crushing surface at the region of each of the plurality of wedges has a concave shaped profile in the axial direction, each of the plurality of wedges being positioned below the axially upper region so as to not extend into an axially lower region of the crushing surface.

17. The crusher shell as claimed in claim 16 , wherein the at least one crushing shell includes an outer crushing shell arranged for being positioned opposed to the frame, such that the plurality of wedges is provided at a radially inward facing surface of the outer shell.

18. The crusher shell as claimed in claim 16 , wherein the at least one crushing shell includes an inner crushing shell arranged for being positioning opposed to the crushing head and the plurality of wedges is provided at a radially outward facing surface of the inner shell.

Assignees

• Sandvik Intellectual Property

Inventors

• Svedensten Per
• Lee Elisabeth
• Larheden Hannes

Classifications

• B02C2/005 Primary

  Lining · CPC title

• B02C2/00 Primary

  Crushing or disintegrating by gyratory or cone crushers {(with non-coaxial discs with intersecting axes B02C7/005)} · CPC title