GB1500580A - Telescopic boom - Google Patents

Telescopic boom

Info

Publication number
GB1500580A
GB1500580A GB26830/75A GB2683075A GB1500580A GB 1500580 A GB1500580 A GB 1500580A GB 26830/75 A GB26830/75 A GB 26830/75A GB 2683075 A GB2683075 A GB 2683075A GB 1500580 A GB1500580 A GB 1500580A
Authority
GB
United Kingdom
Prior art keywords
section
mid
fly
ram
plunger
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
GB26830/75A
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.)
Kidde Inc
Original Assignee
Walter Kidde and Co Inc
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 Walter Kidde and Co Inc filed Critical Walter Kidde and Co Inc
Publication of GB1500580A publication Critical patent/GB1500580A/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
    • 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
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32467—Telescoping members
    • Y10T403/32516—Remotely actuated

Landscapes

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

Abstract

1500580 Telescopic booms WALTER KIDDE & CO Inc 24 June 1975 [26 July 1974] 26830/75 Heading B8H A four-section telescopic boom comprises a manual fly-section 22, an outer mid-section 21, an inner-mid-section 20 and a base section 23. A ram 24 has its rod attached at 26 to the base section 23 while its cylinder is attached at 25 to the inner mid-section 20 and supports a latch mechanism 63 with a spring-loaded plunger 69 arranged to co-operate with a latch plate 97 mounted on the fly-section 22. The plunger 69 can be manually extended and retracted by a wrench 95 passed through openings 96 in the boom sections as illustrated in Fig. 10. A manual locking pin 100 is used at 101 to couple the flysection 22 and the outer mid-section 21 so that extension of a ram 27, whose rod is connected to the outer mid-section 21 at 29 and whose cylinder is connected to the inner mid-section 20 at 28, jointly extends the fly section 22 and the outer mid-section 21, the plunger 69 engaging the plate 97 as shown in Fig. 11. The pin 100 can now be removed from the position 101 so that retraction of the ram 27 returns the outer mid-section 21 to its collapsed position, the latch mechanism 63 holding the fly-section 22 in its extended position, Fig. 12 (not shown). The pin 100 can now be inserted at 102 to lock the fly section 22 to the outer mid-section 21. The plunger 69 is now retracted by use of the wrench 95 whereupon extention of the ram 27 extends the outer mid-section 21, (with the fly section 22 in its extended position), with respect to the inner mid-section 20, Figs. 13 to 15 (not shown).
GB26830/75A 1974-07-26 1975-06-24 Telescopic boom Expired GB1500580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US492265A US3921819A (en) 1974-07-26 1974-07-26 Boom latch mechanism

Publications (1)

Publication Number Publication Date
GB1500580A true GB1500580A (en) 1978-02-08

Family

ID=23955611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26830/75A Expired GB1500580A (en) 1974-07-26 1975-06-24 Telescopic boom

Country Status (13)

Country Link
US (1) US3921819A (en)
JP (1) JPS5624710Y2 (en)
BE (1) BE830788A (en)
BR (1) BR7504763A (en)
CA (1) CA1023307A (en)
DE (1) DE2528129C2 (en)
ES (1) ES438294A1 (en)
FR (1) FR2279656A1 (en)
GB (1) GB1500580A (en)
IT (1) IT1033913B (en)
NL (1) NL179803C (en)
PL (1) PL117432B1 (en)
ZA (1) ZA753335B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187434A (en) * 1986-03-07 1987-09-09 Harnischfeger Corp Telescopic crane boom and method of operation thereof

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926292A1 (en) * 1979-06-29 1981-01-08 Harnischfeger Gmbh PARTICULARLY MOBILE TELESCOPIC BOOM CRANE
US4396126A (en) * 1980-11-24 1983-08-02 Harnischfeger Corporation Telescoping crane boom
US4514939A (en) * 1981-08-17 1985-05-07 Fmc Corporation Extensible boom with manual section stored in base
US4592474A (en) * 1981-08-17 1986-06-03 Fmc Corporation Coupling and latching mechanism for extensible boom
US4492311A (en) * 1981-08-17 1985-01-08 Fmc Corporation Coupling and latching mechanism for extensible boom
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
US4664272A (en) * 1981-11-05 1987-05-12 Kidde, Inc. Telescoping crane boom with locking and indicator means
US4635805A (en) * 1981-11-05 1987-01-13 Kidde, Inc. Crane boom locking pin insertion indicator and actuator means
FR2523565B1 (en) * 1982-03-19 1985-12-06 Ppm Sa TELESCOPIC BOOM WITH AN EXTENSION
US4585132A (en) * 1984-09-10 1986-04-29 Fmc Corporation Extensible boom with manual section stored in base
US5609261A (en) * 1995-09-19 1997-03-11 Hydra Tech, Inc. Pivotable boom rest and latch
DE19631547B4 (en) * 1996-07-24 2004-05-06 Terex-Demag Gmbh & Co. Kg Telescopic boom, especially for stationary or mobile cranes
DE19811813B4 (en) 1998-03-18 2005-11-24 Grove U.S. LLC (n.d.Ges.d.Staates Delaware) Lateral boom interlock
DE19826924A1 (en) * 1998-06-17 1999-12-23 Grove Us Llc Boom fixation with adjusting cylinder
DE10022373B4 (en) * 2000-05-08 2005-11-24 Grove U.S. Llc Locking and operating unit for side arm lock
DE10048224B4 (en) * 2000-09-21 2005-06-02 Terex-Demag Gmbh & Co. Kg Locking unit for a telescopic boom of a crane
US7370904B2 (en) * 2006-03-21 2008-05-13 Mcneilus Truck And Manufacturing, Inc. Covering device for a vehicle container
DE102007052954B3 (en) * 2007-10-31 2009-07-09 Terex Demag Gmbh Crane with telescopic boom
DE102009009944B4 (en) * 2009-02-20 2011-02-24 Terex-Demag Gmbh Securing and bolting unit
CN103016742B (en) * 2013-01-04 2015-04-22 四川日机密封件股份有限公司 High-pressure-resistant mechanical sealing device
CN103738864B (en) * 2013-12-19 2016-01-20 三一汽车起重机械有限公司 Crane arm and hoisting crane
JP7445394B2 (en) * 2018-06-04 2024-03-07 マニタウォック クレイン カンパニーズ， エルエルシー Telescopic boom with rotary extension and locking system
JP7416055B2 (en) * 2019-04-04 2024-01-17 株式会社タダノ work equipment
JP2023066029A (en) * 2021-10-28 2023-05-15 株式会社タダノ work machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961837A (en) * 1956-09-28 1960-11-29 Delong Corp Supporting leg assembly for marine platform
US3243052A (en) * 1965-04-08 1966-03-29 Grove Mfg Co Telescopic crane boom with longitudinally extending cylinder connector
US3474833A (en) * 1966-08-26 1969-10-28 Armed Forces Equipment Dev Cor Telescoping tube assembly
US3398645A (en) * 1966-11-30 1968-08-27 Nat Crane Corp Multiple extension apparatus
CH476625A (en) * 1967-12-22 1969-08-15 Warner Swasey Co Telescopic, hydraulically extendable loading boom for a crane, and method for operating the loading boom
US3795321A (en) * 1972-05-18 1974-03-05 Harnischfeger Corp Telescoping crane boom
US3842985A (en) * 1972-12-15 1974-10-22 Harnischfeger Corp Means for extending and retracting crane boom section

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187434A (en) * 1986-03-07 1987-09-09 Harnischfeger Corp Telescopic crane boom and method of operation thereof

Also Published As

Publication number Publication date
ES438294A1 (en) 1977-02-01
AU8147375A (en) 1976-11-25
BR7504763A (en) 1976-07-06
IT1033913B (en) 1979-08-10
ZA753335B (en) 1976-04-28
FR2279656A1 (en) 1976-02-20
JPS5117972U (en) 1976-02-09
JPS5624710Y2 (en) 1981-06-10
DE2528129A1 (en) 1976-02-05
NL7507319A (en) 1976-01-28
US3921819A (en) 1975-11-25
CA1023307A (en) 1977-12-27
NL179803C (en) 1986-11-17
PL117432B1 (en) 1981-08-31
BE830788A (en) 1975-12-29
DE2528129C2 (en) 1986-10-30
FR2279656B1 (en) 1980-04-18
NL179803B (en) 1986-06-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee