Gyratory chrusher frame

Patent metadata

Field	Value
Publication number	US-9827569-B2
Application number	US-201314390140-A
Country	US
Kind code	B2
Filing date	Mar 19, 2013
Priority date	Apr 3, 2012
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A gyratory crusher frame part includes a topshell mountable on a bottom shell, the topshell having an annular wall extending around a longitudinal axis. A spider having a plurality of arms extending radially outward from a cap is positioned at the longitudinal axis. Each arm has a first portion extending in a radially outward direction from the cap and a second portion extending in an axial direction from an outer region of the first portion. An annular flange is positioned between the second portion of each arm and the annular wall. The annular wall is defined between an outward and inward facing surface of the annular wall. A section of the wall neighboring the flange includes a concave section at the outward facing surface. A first half of the concave section closest to the flange is a substantially uniform curve extending continuously in the circumferential direction around the longitudinal axis.

First claim

The invention claimed is:

1. A gyratory crusher frame part comprising:
a topshell mountable upon a bottom shell, the topshell having an annular wall extending around a longitudinal axis of the frame part, the topshell having an outward facing surface and an inward facing surface relative to the longitudinal axis, the annular wall being defined between the outward and inward facing surfaces;
a spider having a plurality of arms extending radially outward from a cap positioned at the longitudinal axis to a radial outermost region, each arm of the plurality of arms having a first portion extending in a radially outward direction from the cap and a second portion extending in an axial direction from an outer region of the first portion;
an upper annular flange positioned between the second portion of each arm and the annular wall, the upper flange having an outer circumferential perimeter and an inner circumferential perimeter relative to the longitudinal axis, wherein the radial outermost region of each arm is positioned radially inward of the outer circumferential perimeter of the upper flange;
a lower flange axially separated from the upper flange by a section of the annular wall, the section of the wall of the topshell neighbouring the upper flange including a concave section at the outward facing surface, wherein substantially an upper half of the concave section in the axial direction closest to the upper flange is a substantially uniform curve extending continuously in the circumferential direction around the longitudinal axis; and
a majority of a lower half of the concave section in the axial direction closest to the lower flange comprising a curvature profile in the axial direction substantially equal to a curvature profile in the axial direction of the upper half, wherein the outward facing surface of the concave section comprises a curvature defining a substantially uniform curve extending continuously in the axial direction between the upper flange and the lower flange.

2. The frame part as claimed in claim 1 , wherein the outward facing surface of the wall at the concave section comprises a curvature extending over the range 170° to 185° in the axial direction.

3. The frame part as claimed in claim 1 , wherein the flange extends directly from one end of the concave section such that one end of the concave outward facing surface terminates at the outer circumferential perimeter of the flange.

4. The frame part as claimed in claim 1 , wherein the first half of the concave section in the axial direction closest to the flange is devoid of any axially extending shoulders that would otherwise interrupt the continuous circumferential curve.

5. The frame part as claimed in claim 1 , wherein the annular wall at the concave section is curved radially outward at a position immediately below the second portion of each arm of the spider.

6. The frame part as claimed in claim 1 , wherein a radial thickness of the annular wall at the concave section is thinnest substantially at an axially middle region between the lower flange and the upper flange.

7. The frame part as claimed in claim 1 , wherein a maximum radial distance by which the wall at the concave section extends in the upper half is substantially equal to a maximum radial distance by which the wall extends at the concave section in the lower half.

8. The frame part as claimed in claim 1 , wherein an axial cross sectional profile of the outward facing surface at the concave section is substantially semi-circular.

9. The frame part as claimed in claim 8 , wherein a radius of curvature of the semi-circular concave section is substantially equal to a radial thickness of the second portion of each arm of the spider.

10. The frame part as claimed in claim 1 , wherein the lower half of the concave section includes a plurality of notches extending radially outward from the outward facing surface.

11. The frame part as claimed in claim 10 , wherein the outward facing surface at the concave section is a continuous interrupted curve except for the notches radially extending from the outward facing surface at the lower half.

12. A gyratory crusher having a frame part, the frame part comprising:
a topshell mounted upon a bottom shell, the topshell having an annular wall extending around a longitudinal axis of the frame part, the topshell having an outward facing surface and an inward facing surface relative to the longitudinal axis, the annular wall being defined between the outward and inward facing surfaces;
a spider having a plurality of arms extending radially outward from a cap positioned at the longitudinal axis to a radial outermost region, each arm of the plurality of arms having a first portion extending in a radially outward direction from the cap and a second portion extending in an axial direction from an outer region of the first portion;
an upper annular flange positioned between the second portion of each arm and the annular wall, the upper flange having an outer circumferential perimeter and an inner circumferential perimeter relative to the longitudinal axis, wherein the radial outermost region of each arm is positioned radially inward of the outer circumferential perimeter of the upper flange;
a lower flange axially separated from the upper flange by a section of the annular wall, the section of the wall of the topshell neighbouring the upper flange including a concave section at the outward facing surface, wherein substantially an upper half of the concave section in the axial direction closest to the upper flange is a substantially uniform curve extending continuously in the circumferential direction around the longitudinal axis; and
a majority of a lower half of the concave section in the axial direction closest to the lower flange comprising a curvature profile in the axial direction substantially equal to a curvature profile in the axial direction of the upper half, wherein the outward facing surface of the concave section comprises a curvature defining a substantially uniform curve extending continuously in the axial direction between the upper flange and the lower flange.

Assignees

• Sandvik Intellectual Property

Inventors

• Aberg Niklas
• Bergman Axel
• Bern Gustav
• Eriksson Bengt-Arne
• Larsson Mikael M
• Malmqvist Patric

Classifications

• B02C2/00

  Crushing or disintegrating by gyratory or cone crushers {(with non-coaxial discs with intersecting axes B02C7/005)} · CPC title

• B02C2/06 Primary

  and with top bearing {(B02C2/042 takes precedence)} · CPC title

• B02C2/04

  with vertical axis · CPC title