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Roller circle assembly for heavy machinery

A heavy-duty, roller-based technology for centrifugal-resistant rotating parts, cranes, mechanically driven excavators/dredgers, etc., capable of solving uneven and costly problems

Active Publication Date: 2017-07-25
JOY GLOBAL SURFACE MINING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, loading along a given arc length of the roller carousel can be uneven during operations such as digging, dumping, transporting, etc.
Under dynamic, non-uniform loading, the rollers of the roller carousel assembly can twist or deform relative to the track, further concentrating the load in a small contact area and causing costly failure

Method used

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  • Roller circle assembly for heavy machinery
  • Roller circle assembly for heavy machinery
  • Roller circle assembly for heavy machinery

Examples

Experimental program
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Embodiment Construction

[0028] figure 1 Illustrated is a dragline 2 comprising a substructure, frame, cart or base 4 (which may be a tracked drive mechanism or a walking cart) and rotatably supported on the base 4. Superstructure, frame or operator compartment 6 above. Boom 7 protrudes from operator compartment 6 and supports bucket 8 . In conjunction with the boom 7, a series of pulleys, guides and wires are used to steer the bucket 8 along the ground for excavation and mining operations. A roller carousel assembly 10 is coupled between the base 4 and the operator compartment 6 and rotatably supports the operator compartment 6 for rotation about a central axis 12 . Rotation of the cab 6 relative to the base 4 is also used to maneuver the boom 7 and bucket 8 during excavation and mining operations. Although the foregoing description refers specifically to dragline excavators, it should be understood that the roller turntable assembly 10 discussed further herein may be used in other applications su...

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PUM

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Abstract

The invention relates to a roller circle assembly for heavy machinery. The roller circle assembly for heavy machinery includes an upper circular rail and a lower circular rail concentrically arranged about a central axis, and tapered rollers between the upper and lower rail. Each tapered roller includes a flange having an angled and convex flange contact surface that contacts the lower rail. The lower rail and / or the upper rail can include an angled surface configured for contacting with the flange contact surface. The geometry of the rollers and the lower rail are configured to reduce the stresses applied to the rollers and lower rail due to contact between the flange contact surface and the angled surface.

Description

[0001] Instructions for Divisional Application [0002] This application is a divisional application of the Chinese invention patent application whose application number is 201110361876.5, the application date is November 15, 2011, and the invention name is "roller turntable assembly for heavy machinery". [0003] Cross References to Related Applications [0004] This application claims the benefit of and priority to US Provisional Patent Application No. 61 / 414,344, filed November 16, 2010, the entire contents of which are hereby incorporated by reference. technical field [0005] The present invention relates to roller and track configurations for roller turntable assemblies of heavy machinery such as draglines, power excavators, etc., as often used in mining operations and construction. Background technique [0006] In heavy earth moving equipment, such as draglines or power excavators used in mining, the superstructure is rotatably supported on the substructure by a roll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/48E02F9/12E21C47/00F16C33/36B66C3/02B66D1/26F16C19/30B66C23/26F16C33/52
CPCB66C3/02B66C23/26B66D1/26E02F3/48E02F9/121E02F9/126E21C47/00F16C19/305F16C19/364F16C33/366F16C33/526F16C2300/14F16C2350/26F16C2326/00
Inventor 杰森·克努特
Owner JOY GLOBAL SURFACE MINING INC