US 12,453,973 B2
Crusher comprising replaceable protective liners
Victor Urbinatti, Waukesha, WI (US); Henrik Persson, Trelleborg (SE); and Fredrik Larsson, Malmö (SE)
Assigned to METSO FINLAND OY, Espoo (FI)
Appl. No. 16/091,655
Filed by Metso Sweden AB, Trelleborg (SE)
PCT Filed Apr. 8, 2016, PCT No. PCT/EP2016/057752
§ 371(c)(1), (2) Date Oct. 5, 2018,
PCT Pub. No. WO2017/174147, PCT Pub. Date Oct. 12, 2017.
Prior Publication US 2019/0118185 A1, Apr. 25, 2019
Int. Cl. B02C 2/00 (2006.01)
CPC B02C 2/005 (2013.01) [B02C 2210/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A crusher comprising:
a main frame including a bottom shell;
a crushing head mounted upon a main shaft, wherein a crushing gap is formed between an outer surface of the crushing head and an inner circumferential surface of a mantle provided within the main frame;
a steel liner mounted to the bottom shell using a first connection and arranged below the mantle so as to cover and protect a structural element of the crusher which is subject to wear, the steel liner including an outer surface facing the bottom shell and an inner surface facing an interior of the bottom shell, the steel liner including a plurality of protruding portions that are formed as an integral part of or are fixed to the inner surface of the steel liner and extend from the inner surface of the steel liner;
a plurality of protective liner sections mounted to the steel liner using a second connection separate from the first connection such that the plurality of protective liner sections combine to form a protective liner, wherein each of the protective liner sections includes a plurality of through openings, wherein each of the plurality of through openings receives one of the plurality of protruding portions of the steel liner to support the protective liner section along the steel liner; and
a plurality of liner clamps each positioned to engage one of the plurality of through openings and one of the plurality of protruding portions such that the plurality of protective liner sections are releasably fixed to and supported by the steel liner within the crusher, wherein at least a part of an outwardly directed surface of the protective liner constituting a wear surface,
wherein each of the plurality of protective liner sections includes an elastic material layer and wear resistant inserts retained by the elastic material layer, wherein outwardly directed surfaces of the wear resistant inserts form part of the wear surface of the protective liner,
wherein a surface area of the protective liner is smaller than a surface area of the steel liner so that the protective liner covers only part of the surface area of the steel liner.