Protective liner for crusher

Patent metadata

Field	Value
Publication number	US-12083529-B2
Application number	US-202017599638-A
Country	US
Kind code	B2
Filing date	Apr 1, 2020
Priority date	Apr 4, 2019
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

A crusher having a protective liner, the protective liner including a plurality of lining segments which are arranged circumferentially along an a of the crusher. At least some of the segments have a trapezoidal shape with two bases of different lengths arranged parallel to the circumferential direction of the wall and two non-parallel legs connecting the bases. Further, at least some of the segments are arranged along the circumference of the wall such that long and short bases of adjacent segments alternate, and wherein at least some of the segments are allowed to vary in their axial position with respect to adjacent segments to compensate for tolerances in diameter of the wall of the crusher.

First claim

The invention claimed is:

1. A crusher having a protective liner, the protective liner comprising a plurality of lining segments which are arranged circumferentially along a wall of the crusher,
wherein at least some of the segments have a trapezoidal shape with two bases of different lengths arranged parallel to the circumferential direction of the wall and two non-parallel legs connecting the bases,
wherein at least some of the segments are arranged along the circumference of the wall such that long and short bases of adjacent segments alternate, and
wherein at least some of the segments are allowed to vary in their axial position with respect to the adjacent segments to compensate for tolerances in a diameter of the wall of the crusher.

2. The crusher according to claim 1 , wherein the wall of the crusher is at least partly cylindrical.

3. The crusher according to claim 1 , wherein at least one of the segments is movably attached to the wall of the crusher.

4. The crusher according to claim 1 , wherein the two non-parallel legs connecting the bases are rectilinear.

5. The crusher according to claim 1 , wherein an angle formed between the two non-parallel legs connecting the bases is identical for at least three of the segments of the protective liner.

6. The crusher according to claim 1 , wherein the segments comprise a ceramic material, in particular a blend of rubber and ceramic, or wherein the segments comprise a metallic material, in particular a blend of rubber and metal.

7. The crusher according to claim 1 , wherein an angle formed by at least one of the two non-parallel legs connecting the bases and the longer one of the bases is between 80° and 89°.

8. The crusher according to claim 1 , wherein the longer one of the bases has a length of between 600 mm and 1800 mm, and/or the shorter one of the bases has a length of between 500 mm and 1000 mmm.

9. The crusher according to claim 8 , wherein a distance between the bases of the segment is between 200 mm and 2000 mm.

10. The crusher according to claim 1 , wherein at least one of the segments has an elongate slot for fixating the segment on a fixation member on the wall of the crusher.

11. The crusher according to claim 10 , wherein the elongate slot extends in a direction from the long basis to the short basis of the segment.

12. The crusher according to claim 1 , wherein a diameter of the crusher is between 800 mm and 4500 mm.

13. The crusher according to claim 1 , wherein an angle formed between the two non-parallel legs connecting the bases is identical for all of the segments of the protective liner.

14. The crusher according to claim 1 , wherein an angle formed by at least one of the two non-parallel legs connecting the bases and the longer one of the bases is between 83° and 88°.

15. The crusher according to claim 1 , wherein an angle formed by at least one of the two non-parallel legs connecting the bases and the longer one of the bases is equal to 86°.

16. A method for assembling a protective liner in a crusher having a protective liner, the protective liner comprising a plurality of lining segments arranged circumferentially along a wall of the crusher, wherein at least some of the segments have a trapezoidal shape with two bases of different lengths arranged parallel to the circumferential direction of the wall and two non-parallel legs connecting the bases, wherein at least some of the segments are arranged along the circumference of the wall such that long and short bases of adjacent segments alternate, and wherein at least some of the segments are allowed to vary in their axial position with respect to the adjacent segments to compensate for tolerances in a diameter of the wall of the crusher, the method comprising:
a first step of attaching at least two segments to the wall of the crusher, such that an interval along the circumferential direction of the wall is defined between two segments of the crusher, wherein the wall is not covered by any segment in the interval; and
a second step of inserting a further segment into the interval and adjusting the position of the further segment in an axial direction of the wall so that the wall of the crusher is covered with segments arranged along the circumferential direction of the wall, such that the non-parallel legs of the adjacent segments at least partially contact each other.

17. The method according to claim 16 , wherein the interval defined in the first step has an average width as measured in the circumferential direction of the wall that is larger than a length of the shorter one of the bases of the further segment and smaller than a length of the longer one of the bases of the further segment,
and/or wherein
the width of the interval defined in the first step as measured in the circumferential direction of the wall half way between the long base and the short base is larger than a length of the short one of the bases of the further segment and smaller than a length of the long one of the bases of the further segment.

18. The method according to claim 16 , wherein the method further comprises:
a step of positioning the at least one elongate slot on at least one fixation member such that the segment having the elongate slot can be moved substantially only in the direction of elongation of the elongate slot, and fixating the segment by means of the fixation member and the elongate slot when the segment is at a desired position in the axial direction.

19. The method according to claim 16 , wherein, in the first step, the at least two segments are attached to the wall of the crusher in an orientation of the shorter ones of the two bases facing upwards along the axial direction of the wall, and the longer ones of the two bases facing downwards along the axial direction of the wall,
such that the interval between the two segments is tapered downwards to hold the further segment.

Assignees

• Metso Outotec Finland Oy

Inventors

• Van Zyl Ian
• Persson Henrik

Classifications

• B02C2210/02

  Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like · CPC title

• B02C17/225

  using rubber or elastomeric material · CPC title

• B02C2/005 Primary

  Lining · CPC title