GB1355507A - Telescopic jib for a crane - Google Patents

Telescopic jib for a crane

Info

Publication number
GB1355507A
GB1355507A GB3647071A GB3647071A GB1355507A GB 1355507 A GB1355507 A GB 1355507A GB 3647071 A GB3647071 A GB 3647071A GB 3647071 A GB3647071 A GB 3647071A GB 1355507 A GB1355507 A GB 1355507A
Authority
GB
United Kingdom
Prior art keywords
truck
jib
dummy
rocker
rails
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
GB3647071A
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
Priority to FR707029942A priority Critical patent/FR2112051B1/fr
Priority to FR7126416A priority patent/FR2145445B1/fr
Application filed by Potain SA filed Critical Potain SA
Publication of GB1355507A publication Critical patent/GB1355507A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/06Travelling gear incorporated in or fitted to trolleys or cranes for more than one rail gauge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00Cranes
    • B66C2700/03Cranes with arms or jibs; Multiple cranes
    • B66C2700/0385Cranes with trolleys movable along adjustable or slewable arms

Abstract

1355507 Telescopic jibs POTAIN 3 Aug 1971 [5 Aug 1970 12 July 1971] 36470/71 Heading B8B [Also in Division E2] A telescopic jib, Fig. 1, comprises a jib foot 1 and a jib head 2 extended to the length required for the needs of the work site. A lifting truck 5 runs on rails 3 on the jib foot 1. A dummy truck 9, fitted with rails 10 forming an extension of the rails 3 in the position shown, is arranged to run on rails 7 on the jib head 2. When the lifting truck 5 is required to distribute below the jib head 2 it is run on to the dummy truck 9 against a stop 11 and releases a latch 12 whereupon the dummy truck 9 is free to move along the jib head 2 carrying the lifting truck 5. In a modification, Fig. 14, a lifting truck 117 is traversed by an endless cable 110 driven by a winch 111. On jib head 101 the truck 117 is carried on a dummy truck 105. The trucks 105, 117 are latched together by a system comprising a stop 152 on the truck 117 which is trapped between stops 153, 154 on rockers 119, 121 on the dummy truck 105 as shown in Fig. 11. At the change between the jib foot 102 and the jib head 101 (Fig. 9) the trucks are separated, the rocker 119 contacting a roller on a stop 123 whereupon continued retraction of the dummy truck 105 raises the rocker 119 in the direction of arrow 158 so that the stop 153 is withdrawn and the truck 117 is freed, rocker 121 moving under gravity to hold the rocker 119 in its position.
GB3647071A 1970-08-05 1971-08-03 Telescopic jib for a crane Expired GB1355507A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR707029942A FR2112051B1 (en) 1970-08-05 1970-08-05
FR7126416A FR2145445B1 (en) 1971-07-12 1971-07-12

Publications (1)

Publication Number Publication Date
GB1355507A true GB1355507A (en) 1974-06-05

Family

ID=26215901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3647071A Expired GB1355507A (en) 1970-08-05 1971-08-03 Telescopic jib for a crane

Country Status (7)

Country Link
BE (1) BE770788A (en)
DE (1) DE2138923C3 (en)
DK (1) DK132394C (en)
GB (1) GB1355507A (en)
NL (1) NL7110799A (en)
SE (1) SE384195B (en)
SU (1) SU646900A3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2190711B1 (en) * 1972-06-29 1976-01-16 Potain Sa
JPS49126062A (en) * 1973-04-06 1974-12-03
DE2912529C2 (en) * 1979-03-29 1984-04-19 Elba-Werk Maschinen-Gesellschaft Mbh & Co, 7505 Ettlingen Telescopic trolley jib for tower cranes
BE1008262A6 (en) 1994-04-19 1996-02-27 Casters Francois IMPROVEMENTS ON CONCRETE LEVELERS.
DE10022658B4 (en) 1999-06-28 2007-10-04 Terex-Demag Gmbh & Co. Kg telescopic crane
DE20313615U1 (en) * 2003-09-02 2005-01-13 Liebherr-Werk Biberach Gmbh crane

Also Published As

Publication number Publication date
SU646900A3 (en) 1979-02-05
BE770788A (en) 1971-12-01
SE384195B (en) 1976-04-26
NL7110799A (en) 1972-02-08
DE2138923A1 (en) 1972-02-10
DK132394C (en) 1976-05-10
DK132394B (en) 1975-12-01
DE2138923B2 (en) 1975-05-22
DE2138923C3 (en) 1976-01-08

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Legal Events

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