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Heavy duty excavator bucket

a bucket and heavy-duty technology, applied in mechanical machines/dredgers, soil-shifting machines/dredgers, construction, etc., can solve the problems of not being able to quantify or specify

Inactive Publication Date: 2010-01-14
CQMS PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0034]Said exoskeletal structure may also include said cast stee

Problems solved by technology

On the basis of the test results obtained, it has not been possible so far to quantify or specify the particular interrelationships between all of the bucket geometry variables, FIG. 6 does show a clear relationship between payload and the width / height ratio of the bucket mouth.

Method used

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  • Heavy duty excavator bucket
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Examples

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Embodiment Construction

[0053]FIG. 1 shows a perspective view from above of an excavator bucket 1 according to the invention. Bucket 1 comprises a cast lip 2 having spaced noses 3 integrally formed therewith to support replaceable wear member components 4 in the form of adaptors 4a and cutting teeth 4b. Located between spaced noses 3 are replaceable lip shrouds 4c. Extending rearwardly from lip 2 is a plate steel floor 5 and an upwardly curved rear wall 6. Plate steel side walls 7 extend rearwardly of cast side wing members 8 extending upwardly from lip 2. Wing members 8 support replaceable wear members in the form of wing shrouds 9 and formed integrally with wing members 8 are drag rope bushes 10. A cast arch member 11 extends between opposed wing members 8 and supports a mounting bracket 12 for connection to a drag rope rigging assembly (not shown). A cap rail 13 fabricated from cast steel components is secured about the upper edges of the side and rear walls 7, 6 and trunnion brackets 14 are secured to ...

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PUM

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Abstract

A heavy duty excavator bucket is constructed with an exoskeletal structure comprising coupled cast components including a lip member, opposed wing members, junction members locatable between floor and side walls and side and rear walls and a cap rail structure extending between opposed wing members about the upper periphery of the bucket to form an integral structure. Steel plate floor, side wall and rear wall members extend between adjacent exoskeletal regions. The bucket may include a cast arch member extending between opposed wing members and a cast reinforcing member extending between opposed junction members adjacent said rear wall.

Description

FIELD OF THE INVENTION[0001]This invention is concerned with improvements in excavator buckets.[0002]The invention is concerned particularly, although not exclusively with excavator buckets having a support arch.BACKGROUND[0003]Dragline excavators represent a capital expenditure of hundreds of millions of dollars with operational overheads currently around US$6,000 per hour. In order to maximize operational efficiency and return on investment, this necessitates continuous operation of a dragline apparatus 24 hours a day, 7 days a week. Apart from routine shut-downs for maintenance requirements, any reduction in operational efficiency can represent substantial annual productivity losses.[0004]Generally speaking, most draglines are a compromise between such factors as boom length, bucket and rigging mass and bucket payload capacity. Operational efficiencies of a dragline bucket can be measured according to a number of parameters including drag energy (or specific drag energy) and tota...

Claims

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Application Information

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IPC IPC(8): E02F3/40
CPCE02F3/60E02F3/40
Inventor LESLIE, BRUCE ALEXANDERHALL, BEVANORTON, SIMON PETERMULDER, DEREKANDREWS, DAVID
Owner CQMS PTY LTD