Gyratory crusher spider arm shield

Patent metadata

Field	Value
Publication number	US-9358545-B2
Application number	US-201414773371-A
Country	US
Kind code	B2
Filing date	Jan 27, 2014
Priority date	Mar 8, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A gyratory crusher spider arm shield is configured for releasable attachment to a spider arm. The shield includes a main body having an underside foot for engaging onto an upper region of the arm. The secure attachment is provided by cooperation between an attachment element that extends radially inward from an outermost end of the shield and a mount guide provided at sidewalls of the shield that extend laterally each side of the spider arm.

First claim

The invention claimed is:

1. A gyratory crusher spider arm shield for releasable attachment to a spider arm that extends radially outward from a central hub and forms a part of a spider assembly positioned on a topshell frame of a gyratory crusher, the shield comprising:
a main body having an underside foot for positioning on top of the spider arm, a first end for positioning at or towards the central hub and a second end for positioning at a region radially outward from the hub;
a pair of sidewalls extending downwardly from the main body at each lengthwise side of the underside foot;
at least one attachment element extending radially inward from a region of the second end in a direction substantially towards the first end and arranged to engage radially into the spider arm to journal the shield radially inward towards the hub; and
a mount guide provided respectively at each sidewall to engage respective side regions of the spider arm and configured to guide the mating contact between the shield and the arm.

2. The shield as claimed in claim 1 , wherein each mount guide includes a recess extending inwardly within each sidewall from an edge region of each sidewall.

3. The shield as claimed in claim 2 , wherein each recess is orientated in each sidewall such that at least a region of each recess is angled upwardly in a direction from a lowermost edge at the respective sidewall towards the foot.

4. The shield as claimed in claim 2 , wherein a lowermost edge of the recess is angled upwardly in a direction from a lowermost edge of each sidewall towards the foot.

5. The shield as claimed in claim 1 , wherein the attachment element includes at least one bolt extending through the main body substantially from the second end.

6. The shield as claimed in claim 5 , further comprising at least one depression at the second end to at least partially accommodate a head of a respective bolt.

7. The shield as claimed in claim 1 , further comprising a plurality of projections extending downwardly from the foot to engage onto a top region of the arm.

8. The shield as claimed in claim 7 , wherein at least one projection is positioned towards the first end and at least one projection is positioned towards the second end of the main body.

9. A spider assembly for a gyratory crusher comprising:
a central hub;
a plurality of spider arms extending radially outward from the hub towards an outer rim; and
a plurality of arm shields each releasably attached to a respective arm, each shield including a main body having an underside foot for positioning on top of the spider arm, a first end for positioning at or towards the central hub of the spider assembly and a second end for positioning at a region radially outward from the hub, a pair of sidewalls extending downwardly from the main body at each lengthwise side of the underside foot, a mount guide provided at each respective sidewall and each spider arm having respective mount elements engaging with a respective mount guide and configured to guide the mating contact between the shield and the arm, and at least one attachment element to engage into a respective spider arm and to mate the respective mount elements and the mount guides to releasably secure the shield at the spider arm.

10. The spider assembly as claimed in claim 9 , wherein each mount guide includes a recess extending inwardly within each sidewall from an edge region of each sidewall.

11. The spider assembly as claimed in claim 9 , wherein each mount element includes a lug projecting laterally from one side of the spider arm at a region between the hub and the outer rim.

12. The spider assembly as claimed in claim 11 , wherein each arm includes a pair of lugs, each lug projecting laterally from each side of the arm.

13. The spider assembly as claimed in claim 10 , wherein a size of the recess is configured to at least partially receive the lug ( 203 ) to inhibit upward axial movement of the shield relative to the arm when each lug is mated into each recess.

14. The spider assembly as claimed in claim 9 , wherein the at least one attachment element includes at least one bolt extending through the main body substantially from the second end.

15. A gyratory crusher comprising:
a topshell mounted upon a bottom shell and defining an internal crushing chamber;
a main shaft supporting a mantle capable of gyroscopic precession within the crushing chamber; and
a spider assembly the spider assembly including a central hub, a plurality of spider arms extending radially outward from the hub towards an outer rim, and a plurality of arm shields each releasably attached to a respective arm, each shield including a main body having an underside foot for positioning on top of the spider arm, a first end for positioning at or towards the central hub of the spider assembly and a second end for positioning at a region radially outward from the hub, a pair of sidewalls extending downwardly from the main body at each lengthwise side of the underside foot, a mount guide provided at each respective sidewall and each spider arm having respective mount elements engaging with a respective mount guide and configured to guide the mating contact between the shield and the arm, and at least one attachment element to engage with a respective spider arm and to mate the respective mount elements and the mount guides to releasably secure the shield at the spider arm.

Assignees

• Sandvik Intellectual Property

Inventors

• Bergman Axel
• Eriksson Bengt-Arne
• Larsson Mikael M
• Malmqvist Patric

Classifications

• B02C2/06 Primary

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

• B02C2/045

  and with bowl adjusting or controlling mechanisms (B02C2/042, B02C2/06 take precedence) · CPC title