GB1198232A - Hoist Mechanism for Bucket - Google Patents

Hoist Mechanism for Bucket

Info

Publication number
GB1198232A
GB1198232A GB912669A GB912669A GB1198232A GB 1198232 A GB1198232 A GB 1198232A GB 912669 A GB912669 A GB 912669A GB 912669 A GB912669 A GB 912669A GB 1198232 A GB1198232 A GB 1198232A
Authority
GB
United Kingdom
Prior art keywords
drums
torque
bucket
drum
difference
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB912669A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ruston-Bucyrus Ltd
Original Assignee
Ruston-Bucyrus Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US71036668A priority Critical
Application filed by Ruston-Bucyrus Ltd filed Critical Ruston-Bucyrus Ltd
Publication of GB1198232A publication Critical patent/GB1198232A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/48Drag-lines

Abstract

1,198,232. Winding arrangements. RUSTONBUCYRUS Ltd. 20 Feb., 1969 [4 March, 1968], No. 9126/69. Heading B8B. [Also in Divisions E1-E2] A hoist mechanism-for the bucket 13 of a dragline excavator comprises two independently driven drums 14, 15, a pair of cables 16, 17 and 18, 19 extending from each drum, and a suspension arrangement which together with the torque/speed characteristics of the drum drive motors, results in an equal sharing of the load of the bucket 13 by the drums. The bucket is supported by a suspension bar 23 which at one end has a rigid beam 27 and at the other end has a pivoted equalizer beam 25, one cable from each of the drums being coupled to opposite ends of each of the beams 27, 25. Any difference in the torque of the drums 14, 15 is balanced out in the cables 16, 18 due to their connection to the pivoted beam 25, but results in a difference in force in the Gales 17, 19 attached to the rigid beam 27. The motors driving the drums 14, 15 produce low torque at high speed, and therefore, any difference in torque between the two drums will result in the higher torque drum slowing down while the lower torque drum speeds up until the torques are equal, whereupon the two hoist drums are kept substantially in step at all times. The beams 25, 27 are each connected to the suspension bar through universal joints 26. A block 29 for the bucket dump rope 30 is mounted on the suspension bar 23, the rope extending between an arch 31 on the bucket, and the drag rope 34.
GB912669A 1968-03-04 1969-02-20 Hoist Mechanism for Bucket Expired GB1198232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US71036668A true 1968-03-04 1968-03-04

Publications (1)

Publication Number Publication Date
GB1198232A true GB1198232A (en) 1970-07-08

Family

ID=24853744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB912669A Expired GB1198232A (en) 1968-03-04 1969-02-20 Hoist Mechanism for Bucket

Country Status (2)

Country Link
US (1) US3531088A (en)
GB (1) GB1198232A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665152A1 (en) * 1990-07-30 1992-01-31 Stremez Gerard Single cable skip

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073476A (en) * 1976-05-24 1978-02-14 Kranco, Inc. Overhead crane with redundant safety features
US4236859A (en) * 1978-05-22 1980-12-02 Marine Travelift, Inc. Mobile hoist
US6758356B1 (en) 1989-10-10 2004-07-06 Manitowoc Crane Companies, Inc. Liftcrane with synchronous rope operation
US5579931A (en) * 1989-10-10 1996-12-03 Manitowoc Engineering Company Liftcrane with synchronous rope operation
US5167401A (en) * 1990-08-23 1992-12-01 Harnischfeger Corporation Hoist drive and method for driving a double hoist carrying apparatus
US5657559A (en) * 1995-11-24 1997-08-19 Harnischfeger Corporation Rigging assembly for an excavating bucket
EP2158150B1 (en) * 2007-06-22 2011-05-04 Itrec B.V. Marine load raising and lowering system
US7624522B1 (en) * 2007-11-29 2009-12-01 Daniel Ammons Bucket cleaning apparatus
AU2009246056A1 (en) * 2008-05-16 2009-11-19 Cqms Pty Ltd An improved spreader bar for an excavator rigging assembly
US8074382B2 (en) * 2008-12-23 2011-12-13 Soilmec S.P.A. Device for guiding bundles of parallel ropes, cables, or pipes according to a three-dimensional path in an earth-digging machine
US9206018B2 (en) * 2010-05-10 2015-12-08 Bradken Resources Pty Limited Hoist rope equaliser
AU2017201125A1 (en) 2016-02-24 2017-09-07 2Mt Mining Products Pty Ltd Spreader bar and components therefor
USD876488S1 (en) * 2016-02-29 2020-02-25 2Mt Mining Products Pty Ltd Spreader bar
US10822214B2 (en) * 2018-06-13 2020-11-03 Spire LLC Multi-purpose adjustable ceiling suspension storage hoist

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE400631C (en) * 1924-08-18 Maschb A G Tigler Device to enable the transition from gripper operation to piece goods operation with cranes u. like
US1025155A (en) * 1911-06-08 1912-05-07 Raymond C Penfield Hoisting mechanism for brick-setters and the like.
DE915621C (en) * 1942-02-03 1954-07-26 Maschf Augsburg Nuernberg Ag Grapple winch
US2633649A (en) * 1947-02-28 1953-04-07 Page Engineering Company Dragline bucket and boom control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665152A1 (en) * 1990-07-30 1992-01-31 Stremez Gerard Single cable skip

Also Published As

Publication number Publication date
US3531088A (en) 1970-09-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee