GB1215798A - Cranes having a telescopic boom with a compensating boom hoist cable system - Google Patents

Cranes having a telescopic boom with a compensating boom hoist cable system

Info

Publication number
GB1215798A
GB1215798A GB3667869A GB3667869A GB1215798A GB 1215798 A GB1215798 A GB 1215798A GB 3667869 A GB3667869 A GB 3667869A GB 3667869 A GB3667869 A GB 3667869A GB 1215798 A GB1215798 A GB 1215798A
Authority
GB
United Kingdom
Prior art keywords
boom
pulleys
cables
shown
cable
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
GB3667869A
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.)
Harnischfeger Corp
Original Assignee
Harnischfeger Corp
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 US74767368A priority Critical
Application filed by Harnischfeger Corp filed Critical Harnischfeger Corp
Publication of GB1215798A publication Critical patent/GB1215798A/en
Application status is Expired legal-status Critical

Links

Classifications

    • 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
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • 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
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/703—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by flexible elements, e.g. cables, chains or bands

Abstract

1,215,798. Jib cranes. HARNISCHFEGER CORP. 22 July, 1969 [25 July, 1968], No. 36678/69. Heading B8B. A crane boom B comprises telescopic base, intermediate, third and fourth sections 10, 12, 14, 16. The base section 10 is pivotally mounted for luffing and the boom B is supported by a cable system S extending between the boom tip 25 and a winch (not shown) on the crane frame. The system S comprises line 29a from the winch to pulley 30 and portions of cables 50, 52, 54 which form suspension cables respectively anchored adjacent the rear ends of boom sections 12, 14, 16 at points 12a, 14a, 16a after passing around sheaves 40, 42, 44. The cables 50, 52 are respectively anchored on pulleys 32, 34 after passing around pulleys 30, 32. The cable 54 is anchored at point 25. This arrange ment provides a compensating system when the boom B is extended. The suspension cables 50, 52, 54 can be individually changed in length for a particular crane design to vary the offset of the pulleys 30, 32, 34 from the sheaves 40, 42, 44 selectively to adjust the supporting effect of a suspension cable on its associated boom section as shown in Fig. 5. In a modification, Fig. 6 (not shown), an extra fall is provided between the pulleys 30, 32; 32, 34; 34, 36 by passing the cables 50, 52, 54 around the pulleys 32, 34, 36 and anchoring them on the pulleys 30, 32, 34.
GB3667869A 1968-07-25 1969-07-22 Cranes having a telescopic boom with a compensating boom hoist cable system Expired GB1215798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US74767368A true 1968-07-25 1968-07-25

Publications (1)

Publication Number Publication Date
GB1215798A true GB1215798A (en) 1970-12-16

Family

ID=25006150

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3667869A Expired GB1215798A (en) 1968-07-25 1969-07-22 Cranes having a telescopic boom with a compensating boom hoist cable system

Country Status (4)

Country Link
US (1) US3534867A (en)
DE (1) DE1937274A1 (en)
FR (1) FR2013711A1 (en)
GB (1) GB1215798A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136753A (en) * 1983-03-21 1984-09-26 Donald Lacey Smith Telescopic boom and conveyor apparatus

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889818A (en) * 1973-09-21 1975-06-17 Carl G Wennerstrom Extensible crane
US3844418A (en) * 1973-11-29 1974-10-29 Case Co J I Telescoping jib assembly
US4039174A (en) * 1976-03-31 1977-08-02 Fordees Corporation Reline tower for a metallurgical furnace
JPS572508Y2 (en) * 1978-08-11 1982-01-16
DE3030821C2 (en) * 1979-08-17 1983-12-01 Coles Cranes Ltd., Sunderland, Tyne And Wear, Gb
US4352434A (en) * 1980-05-01 1982-10-05 Fmc Corporation Pendant supported hydraulic extensible boom
US4489838A (en) * 1981-08-17 1984-12-25 Fmc Corporation Low droop multi-part pendant supported boom
DE3137846C2 (en) * 1981-09-23 1985-01-03 Albert Boecker Gmbh & Co Kg, 4712 Werne, De
US4468166A (en) * 1982-07-08 1984-08-28 Fmc Corporation Apparatus for extending and retracting telescoping booms and pipelines
DE3447095C2 (en) * 1984-12-22 1995-04-06 Krupp Ag Hoesch Krupp Telescopic boom for cranes
US4982853A (en) * 1989-02-09 1991-01-08 Hikoma Seisakusho Co., Ltd. Reinforcement mechanism for multi-stage telescopic boom
AU684467B2 (en) * 1992-07-13 1997-12-18 Mordechai Hammer Extendible and retractable device
IL98944D0 (en) * 1991-07-24 1992-07-15 Hammer Mordechai Device which widens and narrows for multiplying and transferring movement in space
US20090057636A1 (en) * 2007-08-31 2009-03-05 Tait Towers Inc. Portable lift device and system
US8684197B2 (en) * 2009-05-01 2014-04-01 Manitowoc Crane Companies, Llc Crane with boom raising assist structure
CN102979078B (en) * 2012-11-22 2014-01-15 三一重工股份有限公司 Cylinder driven lifting mechanism of dynamic compaction machine and dynamic compaction machine
DE102015003982A1 (en) * 2015-03-26 2016-09-29 Liebherr-Werk Biberach Gmbh crane tower
WO2017192531A1 (en) * 2016-05-02 2017-11-09 Cameron International Corporation Catwalk and crane system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1163497A (en) * 1915-07-28 1915-12-07 Nils Engholm Andersen Extension-boom.
US1345304A (en) * 1919-09-22 1920-06-29 Zied Samuel Derrick for vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136753A (en) * 1983-03-21 1984-09-26 Donald Lacey Smith Telescopic boom and conveyor apparatus

Also Published As

Publication number Publication date
FR2013711A1 (en) 1970-04-03
DE1937274A1 (en) 1970-01-29
US3534867A (en) 1970-10-20

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