ES378784A1 - Telescopic jibs - Google Patents

Telescopic jibs

Info

Publication number
ES378784A1
ES378784A1 ES378784A ES378784A ES378784A1 ES 378784 A1 ES378784 A1 ES 378784A1 ES 378784 A ES378784 A ES 378784A ES 378784 A ES378784 A ES 378784A ES 378784 A1 ES378784 A1 ES 378784A1
Authority
ES
Spain
Prior art keywords
section
sections
catches
rear end
bolt
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
ES378784A
Other languages
Spanish (es)
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.)
PPM SA
Potain Poclain Materiel PPM SA
Original Assignee
PPM SA
Potain Poclain Materiel PPM 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 PPM SA, Potain Poclain Materiel PPM SA filed Critical PPM SA
Publication of ES378784A1 publication Critical patent/ES378784A1/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
    • B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

This invention relates to a locking device for a telescopic jib constituted by at least three sections and by a motive member connected between the first and second sections, and comprising at least one bolt capable of integrating the second and third sections in their relative end positions, wherein this bolt is arranged on the rear end of the third section and may be selectively inserted into at least three catches, said catches being respectively unitary with the rear end of the second section, with an element unitary with the first section and with the front end of the second section, whilst the second catch is arranged near the front end of the first section.
ES378784A 1969-04-21 1970-04-18 Telescopic jibs Expired ES378784A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6912472A FR2041329A5 (en) 1969-04-21 1969-04-21

Publications (1)

Publication Number Publication Date
ES378784A1 true ES378784A1 (en) 1972-07-16

Family

ID=9032778

Family Applications (1)

Application Number Title Priority Date Filing Date
ES378784A Expired ES378784A1 (en) 1969-04-21 1970-04-18 Telescopic jibs

Country Status (6)

Country Link
US (1) US3670465A (en)
JP (1) JPS492061B1 (en)
DE (1) DE2018820A1 (en)
ES (1) ES378784A1 (en)
FR (1) FR2041329A5 (en)
GB (1) GB1283831A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863407A (en) * 1971-02-13 1975-02-04 Gottwald Kg Leo Telescopic crane jib
US3738075A (en) * 1971-06-16 1973-06-12 Nat Crane Corp Extendible boom with latch means for extension and retraction
GB1437526A (en) * 1972-10-09 1976-05-26 Int Harvester Co Extensible jib crane
US3958376A (en) * 1974-02-15 1976-05-25 Zip Up, Inc. Extendible tower structure
DE2519558C2 (en) * 1975-05-02 1977-05-12 Orenstein & Koppel Ag TELESCOPIC BOOM WITH HYDRAULIC ACTUATION
US4036372A (en) * 1975-12-15 1977-07-19 Clark Equipment Company Extension and retraction means for the telescopic boom assembly of a crane
GB1594096A (en) * 1976-11-11 1981-07-30 Coles Cranes Ltd Telescopic booms
FI802255A (en) * 1979-07-25 1981-01-26 Coles Cranes Ltd BOM FOER LYFTKRAN
US4327533A (en) * 1980-08-13 1982-05-04 Kidde, Inc. Crane boom extending, retracting and cooperative latching arrangement
US4433515A (en) * 1981-11-04 1984-02-28 Kidde, Inc. Remotely operable latch and locking pin for a multi-section boom including a manual fly section
US4688690A (en) * 1986-03-07 1987-08-25 Harnischfeger Corporation Method and apparatus for extending fly section of crane boom
GB8605798D0 (en) * 1986-03-10 1986-04-16 King Trailer Ltd Draw bar
DE19811813B4 (en) * 1998-03-18 2005-11-24 Grove U.S. LLC (n.d.Ges.d.Staates Delaware) Lateral boom interlock
US6538064B2 (en) * 2000-06-06 2003-03-25 Kuraray Co., Ltd. Method for producing ethylene-vinyl alcohol copolymer resin composition
DE10048224B4 (en) * 2000-09-21 2005-06-02 Terex-Demag Gmbh & Co. Kg Locking unit for a telescopic boom of a crane

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE376494A (en) * 1931-01-14
DE723535C (en) * 1934-09-19 1942-08-06 Gertrud Rascher Geb Triemer Mast with several telescopic mast sections
US2173095A (en) * 1938-04-14 1939-09-19 Collins Radio Co Telescoping vertical radiator and method of erecting the same
US2589080A (en) * 1949-11-05 1952-03-11 Star Drilling Machine Company Power-operated telescoping mast and braces
US2685353A (en) * 1950-11-13 1954-08-03 Us Army Telescopic structure
US2819803A (en) * 1954-10-12 1958-01-14 Leo B Obenchain Boom for cranes
US2920725A (en) * 1955-08-08 1960-01-12 Reynolds Metals Co Portable collapsible derricks
US3088543A (en) * 1960-04-16 1963-05-07 Kloeckner Humboldt Deutz Ag Extensible multi-section supporting structures
FR1430168A (en) * 1964-11-26 1966-03-04 Hydraulically extendable telescopic column
US3296757A (en) * 1965-06-23 1967-01-10 Louis N Goodman Equipment mast arrangement
US3398645A (en) * 1966-11-30 1968-08-27 Nat Crane Corp Multiple extension apparatus

Also Published As

Publication number Publication date
GB1283831A (en) 1972-08-02
FR2041329A5 (en) 1971-01-29
DE2018820A1 (en) 1970-11-05
JPS492061B1 (en) 1974-01-18
US3670465A (en) 1972-06-20

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