GB1462412A - Telescopic crane jibs - Google Patents

Telescopic crane jibs

Info

Publication number
GB1462412A
GB1462412A GB1322774A GB1322774A GB1462412A GB 1462412 A GB1462412 A GB 1462412A GB 1322774 A GB1322774 A GB 1322774A GB 1322774 A GB1322774 A GB 1322774A GB 1462412 A GB1462412 A GB 1462412A
Authority
GB
United Kingdom
Prior art keywords
cable
winch
jib
wound
telescopic
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
GB1322774A
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.)
Manitowoc Crane Group France SAS
Original Assignee
Potain SA
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 Potain SA filed Critical Potain SA
Publication of GB1462412A publication Critical patent/GB1462412A/en
Expired legal-status Critical Current

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
    • 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
    • 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
    • B66C23/26—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 for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail

Abstract

1462412 Telescopic crane jibs POTAIN 26 March 1974 [26 March 1973] 13227/74 Heading B8B A telescopic jib 5, shown combined with a mast 1 to form a crane, comprises a supporting tie 8, one end of which is screwed to the free end of the head of the jib 10 so that in use the jib 5 is subjected to compressive stress, the tie 8 including a cable arrangement 11 disposed between two sets of sheaves 12, 13 and a second cable arrangement 17 controlling the telescopic action of the jib 5, both cable arrangements being actuated from the same winch 16. The cable arrangement 11 is controlled by a cable 14 wound one way on a larger drum 15 of the winch 16 while the cable arrangement 17 is controlled by a cable 23 wound the other way on a smaller drum 26 of the winch 16. Thus, when the jib 5 is raised it contracts and when lowered it extends. A desired track for the load hook 27 can be obtained, for example substantially horizontal, Fig. 3 (not shown), by varying the ratio of the diameters of the drums 15, 26 and the number of falls in the cable arrangements 11, 17. The load hook 27 is supported by a cable 28 wound on a separate winch drum 33, independent of the winch 16, which may be operated simultaneously with the winch 16 to vary the trajectory of the load hook 27, if desired.
GB1322774A 1973-03-26 1974-03-26 Telescopic crane jibs Expired GB1462412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7311470A FR2223299B1 (en) 1973-03-26 1973-03-26

Publications (1)

Publication Number Publication Date
GB1462412A true GB1462412A (en) 1977-01-26

Family

ID=9117110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1322774A Expired GB1462412A (en) 1973-03-26 1974-03-26 Telescopic crane jibs

Country Status (4)

Country Link
JP (1) JPS5026250A (en)
DE (1) DE2414254A1 (en)
FR (1) FR2223299B1 (en)
GB (1) GB1462412A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046217A (en) * 1973-08-29 1975-04-24
CN107336260A (en) * 2017-09-01 2017-11-10 深圳龙海特机器人科技有限公司 Self compensation joint and lifting device
CN108975175A (en) * 2018-07-19 2018-12-11 芜湖籁余新能源科技有限公司 A kind of rig a ship device

Also Published As

Publication number Publication date
JPS5026250A (en) 1975-03-19
DE2414254A1 (en) 1974-10-03
FR2223299A1 (en) 1974-10-25
FR2223299B1 (en) 1981-03-27

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Legal Events

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