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Spider bushing assembly for a gyratory crusher

A gyratory crusher and bushing technology, applied in the direction of grain processing, etc., can solve the problems of prolonged downtime, cost of gyratory crusher, etc.

Active Publication Date: 2018-12-21
METSO MINERALS IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In either case, significant expense and extended downtime of the gyratory crusher will result

Method used

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  • Spider bushing assembly for a gyratory crusher
  • Spider bushing assembly for a gyratory crusher
  • Spider bushing assembly for a gyratory crusher

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0022] figure 1 The upper part of the gyratory crusher 10 is shown, wherein the lower part is well known in the prior art and is therefore not shown. The gyratory crusher 10 includes a housing 12 that includes a plurality of rows of recesses 14 positioned along the inner surface of an upper top housing casting 16 to define a generally conical frusto-conical inner surface 17 that The frusto-conical inner surface directs material from the open top 18 downwardly through a converging crushing chamber 20 formed between the inner surface 17 defined by the rows of recesses 14 and the frusto-conical truncated cone positioned on the rotary spindle 26 Between the outer surface 22 of the frustoconical mantle 24. As the spindle 26 rotates, material is crushed at the level of the crushing chamber 20 between the inner surface 17 of the housing 12 and the outer surface 22 of the shroud 24 .

[0023] The upper end 28 of the spindle 26 is supported in a bracket bushing 30 received within a c...

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PUM

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Abstract

A gyratory crusher and a spider bushing assembly for supporting a spider bushing within the central hub of a gyratory crusher. The spider bushing assembly includes a spider bushing and a means for adjusting the distance between the outer flange of the spider bushing and a support shoulder formed within the central hub of the spider. The means for adjusting allows the position of the spider bushingwithin the internal bore of the central hub to change while maintaining an interference fit as a result of wear following use of the gyratory crusher. In one embodiment, one or more annular shims arepositioned between the bearing support shoulder of the central hub and the outer flange of the spider bushing. Upon wear, one or more of the shims can be removed to improve the interference fit between the spider bushing and the internal bore formed within the central hub.

Description

Background technique [0001] The present disclosure generally relates to a spider bushing (spider bushing) for use in a gyratory crusher. More specifically, the present disclosure relates to a system for adjusting the position of a cradle bushing within a cradle of a gyratory crusher to selectively vary the interference fit between the cradle bushing and an internal receiving bore in a central hub of the cradle and methods. [0002] Currently, there are gyratory crushers that include a cast iron cradle bushing that fits with an interference fit within an internal bore formed in the central hub of the cradle. The bore of the stent hub is machined with a tapered inner diameter (ID) and the stent bushing is machined with a tapered outer diameter (OD). The bracket bushing is formed with an outer flange that has a series of spaced through holes so that the bolts can be used to pull the tapered bracket bushing down tightly into the inner bore of the bracket hub so that the bracket ...

Claims

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Application Information

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IPC IPC(8): B02C2/06
CPCB02C2/06B02C2/04B02C2/045
Inventor D·J·波林斯基
Owner METSO MINERALS IND INC