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GB1046842A - Booms for excavators and the like - Google Patents

Booms for excavators and the like

Info

Publication number
GB1046842A
GB1046842A GB5580/65A GB558065A GB1046842A GB 1046842 A GB1046842 A GB 1046842A GB 5580/65 A GB5580/65 A GB 5580/65A GB 558065 A GB558065 A GB 558065A GB 1046842 A GB1046842 A GB 1046842A
Authority
GB
United Kingdom
Prior art keywords
section
boom
triangular
portions
illustrates
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
GB5580/65A
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
Application filed by Ruston-Bucyrus Ltd filed Critical Ruston-Bucyrus Ltd
Publication of GB1046842A publication Critical patent/GB1046842A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/14—Booms only for booms with cable suspension arrangements; Cable suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0321—Travelling cranes
    • B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
    • B66C2700/0364—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks with a slewing arm
    • B66C2700/0371—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks with a slewing arm on a turntable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

1,046,842. Mobile jib-cranes. RUSTONBUCYRUS Ltd. Feb. 9, 1965 [Feb. 14, 1964], No. 5580/65. Heading B8B. [Also in Division E1] A boom 6 of a crane has a central section 8 of triangular cross-section and a bottom section 7 of rectangular cross-section and the chords 14, 15 and 17, 18, 19 are so dimensioned and located that at the junction between the two sections the summation of the products of each area moment and its respective modulus of elasticity, for each section, is zero, thereby minimizing stresses which tend to flex the boom. Fig. 4 (not shown), illustrates the arrangement of chords on the underside of the boom. Figs. 9, 11 (not shown), illustrate top and bottom plan views of a second embodiment in which the transition from triangular to rectangular cross-section does not take place at the junction between the two sections. Figs. 15, 17 (not shown), show in top and bottom view a third embodiment having triangular and quadrilateral portions shown in cross-section in Figs. 18, 19 (not shown). Fig. 22 (not shown), illustrates an excavator boom having triangular portions 74 and quadrilateral portions 77. Each sub-boom has a chord comprising a plate 79, Fig. 21 (not shown), on its outer side. Fig. 27 (not shown), illustrates a further excavator boom having triangular portions 81 which join a quadrilateral base section 82.
GB5580/65A 1964-02-14 1965-02-09 Booms for excavators and the like Expired GB1046842A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US344922A US3249238A (en) 1964-02-14 1964-02-14 Boom comprised of sections of differing cross section having aligned elastic centers

Publications (1)

Publication Number Publication Date
GB1046842A true GB1046842A (en) 1966-10-26

Family

ID=23352686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5580/65A Expired GB1046842A (en) 1964-02-14 1965-02-09 Booms for excavators and the like

Country Status (4)

Country Link
US (1) US3249238A (en)
DE (1) DE1431878A1 (en)
GB (1) GB1046842A (en)
SE (1) SE304955B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335877A (en) * 1966-04-18 1967-08-15 Bucyrus Erie Co Lowerable a-frame assembly for mobile cranes and the like
US3949882A (en) * 1972-06-15 1976-04-13 Hans Liebherr Rotary tower crane
US4253579A (en) * 1979-06-28 1981-03-03 Bucyrus-Erie Company Modular boom construction
US4540096A (en) * 1984-08-23 1985-09-10 Orvis Victor R Truss boom
US4863044A (en) * 1987-12-30 1989-09-05 Neil F. Lampson, Inc. Latticework construction for cranes
US5145075A (en) * 1990-10-15 1992-09-08 Bucyrus-Erie Boom point construction
US5487479A (en) * 1992-11-23 1996-01-30 The Manitowoc Company, Inc. Method for nesting longitudinally divisible crane boom segments
US5406767A (en) * 1992-11-23 1995-04-18 The Manitowoc Company, Inc. Longitudinally divisible crane boom segment
US5636459A (en) * 1995-02-03 1997-06-10 Harnischfeger Corporation Dragline including improved boom
DE10002917A1 (en) * 2000-01-19 2001-08-02 Mannesmann Ag Ring lift crane
DE202008004663U1 (en) * 2008-04-04 2009-08-13 Liebherr-Werk Ehingen Gmbh Lattice boom crane and lattice boom
DE202010004584U1 (en) 2010-04-06 2011-10-05 Liebherr-Werk Ehingen Gmbh Lattice boom crane and lattice boom
DE202010004980U1 (en) * 2010-04-14 2011-09-01 Liebherr-Werk Ehingen Gmbh Lattice boom crane and lattice boom
CN102249161A (en) * 2010-05-21 2011-11-23 上海三一科技有限公司 Multi-main-chord arm support for crane
JP5669464B2 (en) * 2010-07-08 2015-02-12 株式会社神戸製鋼所 Lattice boom
US9033165B2 (en) 2011-02-09 2015-05-19 Oshkosh Corporation Crane assembly
CN102674168B (en) * 2011-03-15 2015-04-22 徐工集团工程机械股份有限公司建设机械分公司 Reinforced boom and crane with reinforced boom
DE202014004888U1 (en) 2014-06-16 2014-07-31 Liebherr-Werk Ehingen Gmbh Lattice piece for a lattice boom, lattice boom and crane
CN104512821A (en) * 2014-12-23 2015-04-15 中联重科股份有限公司 Crane arm of engineering machinery and engineering machinery
CN113548326B (en) * 2021-06-23 2022-10-21 中联重科股份有限公司 Three-section arm in-box bundling and container
CN113582049B (en) * 2021-07-19 2024-11-19 徐工集团工程机械股份有限公司建设机械分公司 Crawler crane and triangular truss arm thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941952A (en) * 1931-12-26 1934-01-02 Manitowoc Shipbuilding Corp Boom construction
US2139254A (en) * 1937-06-10 1938-12-06 Marion Steam Shovel Co Excavating machine
US3021014A (en) * 1959-01-19 1962-02-13 Link Belt Speeder Corp Crane boom structure

Also Published As

Publication number Publication date
SE304955B (en) 1968-10-07
US3249238A (en) 1966-05-03
DE1431878A1 (en) 1968-11-21

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