Patent · US Active

Bearing for a shaft of a gyratory crusher and method of adjusting the gap width of the crusher

US7988082B2 · kind B2 · utility

3Cited by

6References

11Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Percy Norrman · Malmö, SE
Jan Johansson · Vallentuna, SE
Torbjorn Nilsson-Wulff · Svedala, SE
Niklas Bennstedt · Sogndal, NO

Key dates

Filing date	Jun 29, 2009
Grant date	Aug 2, 2011
Priority date	—
Expiry date	Sep 16, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C2210/02
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A gyratory crusher has a crushing head fixedly attached to an upper portion of a substantially vertical shaft, on which crushing head a first crushing shell is mounted, and a frame on which a second crushing shell is mounted. The second crushing shell defines, together with the first crushing shell, a crushing gap. The gyratory crusher has a space adapted to contain liquid. The space is defined by a piston, which is formed at least partly of the lower end of the shaft, a cylinder, which is formed at least partly in an eccentric assembly, and a bottom element. The space is adapted to form a cushion with the aid of the liquid, so that the cushion can serve as a thrust bearing transmitting vertical forces from the crushing head to the bottom element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.