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Dragline chain

a bucket chain and dragline technology, applied in the direction of hoisting chains, hauling chains, constructions, etc., can solve the problems of compromising affecting the use of tension loads, and affecting the strength of the chain link,

Active Publication Date: 2022-03-29
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables safer and more efficient inspection and maintenance of chain links, reducing the need for tool-based measurements and potentially extending chain life by providing a clear indication of wear stages without damaging the chain, thus optimizing replacement timing.

Problems solved by technology

This area is subjected to tension loads in use and / or abrasion from the material located in the work area.
Over time, this bite region may wear down, compromising the strength of the chain link, and therefore, of the chain as a whole.
Similarly, the middle portions (sometimes referred to as “rails”) of the chain link, situated between the ends of the chain link may also be subject to wear from abrasion from the material located in the work area, necking due to tensile loads, etc.
Once the middle portion of the chain link becomes too thin, the chain link strength and the overall chain strength may be compromised.
This can be time consuming and may damage the chain undesirably.

Method used

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Examples

Experimental program
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Embodiment Construction

[0025]Reference will now be made in detail to embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. In some cases, a reference number will be indicated in this specification and the drawings will show the reference number followed by a letter for example, 100a, 100b or by a prime for example, 100′, 100″ etc. It is to be understood that the use of letters or primes immediately after a reference number indicates that these features are similarly shaped and have similar function as is often the case when geometry is mirrored about a plane of symmetry. For ease of explanation in this specification, letters and primes will often not be included herein but may be shown in the drawings to indicate duplications of features, having similar or identical function or geometry, discussed within this written specification.

[0026]In various ...

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PUM

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Abstract

A method for maintaining a chain or chain link comprises inspecting the chain or chain link for signs of wear without using tools and changing the orientation of the chain or chain link or replacing the chain or chain link if signs of wear are detected.

Description

TECHNICAL FIELD[0001]The present disclosure relates to chain assemblies that are used in dragline mining operations and the like. More specifically, the present disclosure relates to a dragline bucket chain assembly that includes wear indicators.BACKGROUND[0002]Referring initially to FIG. 1, chains 100 have historically been used in dragline buckets 102 in the hoist and drag circuits. Some rigging configurations also use chains in the dump circuit (single dump block systems). Chains 100 have in the past been cast, forged, comprised structural plate, etc.[0003]These chains comprise a plurality of links that are interconnected and engage each other in the region called the “bite” region of the links. This usually corresponds to the inside radial portion of an end of the chain link. This area is subjected to tension loads in use and / or abrasion from the material located in the work area. Over time, this bite region may wear down, compromising the strength of the chain link, and therefo...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): E02F3/48E02F3/58E02F9/26F16G13/12F16G13/18
CPCE02F3/48E02F3/58E02F9/267F16G13/12F16G13/18
Inventor STOLZ, MICHAEL ROBERT
Owner CATERPILLAR INC