Patent · US Active

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

US7673821B2 · kind B2 · utility

8Cited by

8References

11Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Percy Norrman · Malmö, SE
Bengt-Arne Eriksson · Svedala, SE
Niklas Bennstedt · Sogndal, NO
Rolf Silfver · Beddingestrand, SE

Key dates

Filing date	Feb 21, 2008
Grant date	Mar 9, 2010
Priority date	—
Expiry date	Feb 21, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C2/047
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A gyratory crusher includes a crushing head on which 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 includes a space adapted to hold a liquid. The space is defined by a piston and a cylinder, any one of the piston and the cylinder being formed at least partly of a substantially vertical shaft around which the crushing head is arranged. The space is adapted to form, together with the liquid, a cushion, thereby enabling the cushion to serve as a thrust bearing and transmit vertical forces from the crushing head to the frame.

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