Frame for a gyratory crusher

Patent metadata

Field	Value
Publication number	US-9527086-B2
Application number	US-201214124258-A
Country	US
Kind code	B2
Filing date	May 29, 2012
Priority date	Jun 7, 2011
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A gyratory crusher includes a frame and a crushing head which is arranged rotatably about a substantially vertical shaft. The frame has an upper frame portion and a lower frame portion. The lower frame portion includes a hub. The hub has a centralized arranged through hole with a center axis extending through the hole and the hub. The hole is arranged to cooperate with the shaft being rotatably arranged in the hole. The hub is connected by arms to the lower frame portion and includes a drive ring pocket.

First claim

The invention claimed is:

1. A gyratory crusher comprising:
a frame;
a crushing head arranged rotatably about a substantially vertical shaft, wherein the frame includes an upper frame portion, and a lower frame portion; and
a hub formed in the lower frame portion, the hub having a centralized arranged through hole with a center axis extending through said hole and the hub, the hole being arranged to cooperate with the shaft rotatably arranged in said hole, the hub being connected by a plurality of arms to the lower frame portion and including a drive ring pocket, the drive ring pocket being bounded by an inner wall element, an outer wall element of the hub and a bottom wall element, the inner wall, outer wall and bottom wall elements extending continuously around a periphery of the hub, wherein the hub includes a hub bottom end and a waist portion, the waist portion extending discontinuously around the periphery of the hub, wherein at each arm the waist portion extends from the bottom wall element of the drive ring pocket to the hub bottom end and has a height that is larger than a longitudinal height of the bottom wall element, the waist portion having a thickness in a radial direction from the center axis that is larger than a width of the drive ring pocket for the hub.

2. A gyratory crusher according to claim 1 , wherein the inner wall element and the outer wall element of the hub are arranged at a distance from each other and the radial thickness of the waist portion is at least as thick as the sum of the radial thickness of the inner wall element and the width of the drive ring pocket.

3. A gyratory crusher according to claim 1 , wherein the radial thickness of the waist portion decreases towards the hub bottom end.

4. A gyratory crusher according to claim 2 , wherein the hub bottom end includes a wall element that is a prolongation of the inner wall element for the hub in the direction along the center axis, the radial thickness of the wall element of the hub bottom end being substantially the same as the radial thickness of the inner wall element of the hub.

5. A gyratory crusher according to claim 1 , wherein the arms of the lower frame portion are hollow and the waist portion is arranged between the arms of the lower frame portion.

6. A gyratory crusher according to claim 5 , wherein the waist portion extends in a circumferential direction of the hub to and joins the arms of the lower frame portion.

7. A gyratory crusher according to claim 6 , wherein the waist portion extends to and joins each arm of the lower frame portion by a transition section at each waist portion end forming a smooth connection between the waist portion and each arm.

8. A gyratory crusher according to claim 2 , wherein the longitudinal height of the bottom wall element is larger than the radial thickness of the inner wall element of the hub.

9. A gyratory crusher according to claim 4 , wherein the longitudinal height of the bottom wall element is smaller than the distance from the bottom of the drive ring pocket to the hub bottom end.

Assignees

• Johansson Henrik
• Nilsson Martin
• Sandvik Intellectual Property

Inventors

• Johansson Henrik
• Nilsson Martin

Classifications

• B02C2/042 Primary

  Moved by an eccentric weight · CPC title

• B02C2/04 Primary

  with vertical axis · CPC title