US 12,005,458 B2
Gyratory crusher main shaft sleeve
Johan Gunnarsson, Sovde (SE)
Assigned to Sandvik SRP AB, Svedala (SE)
Appl. No. 17/281,318
Filed by SANDVIK SRP AB, Svedala (SE)
PCT Filed Oct. 1, 2018, PCT No. PCT/EP2018/076660
§ 371(c)(1), (2) Date Mar. 30, 2021,
PCT Pub. No. WO2020/069719, PCT Pub. Date Apr. 9, 2020.
Prior Publication US 2021/0402410 A1, Dec. 30, 2021
Int. Cl. B02C 2/06 (2006.01)
CPC B02C 2/06 (2013.01) 15 Claims
OG exemplary drawing
 
1. A gyratory crusher main shaft sleeve arranged for friction fitting over an uppermost tapered end of a crusher main shaft, the sleeve comprising:
an elongate axial wall extending from an upper end to a lower end and being centered around a center axis, the axial wall having an external facing surface and an internal facing surface aligned transverse to taper inwardly towards the center axis, and wherein the tapering is defined by a sleeve tapering angle formed between the internal facing surface and an imaginary axis arranged parallel with the center axis, and wherein the internal surface of the sleeve has a section in an axial direction having an upper end and a lower end, the section, from the upper end to the lower end, having a section tapering angle formed between the internal surface and the imaginary axis, the section tapering angle being different compared to the sleeve tapering angle defining the tapering of the sleeve from the upper end of the axial wall to the section upper end, wherein the section tapering angle of the sleeve section is smaller than the sleeve tapering angle of the sleeve.