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GB1461970A - Cranes - Google Patents

Cranes

Info

Publication number
GB1461970A
GB1461970A GB5393574A GB5393574A GB1461970A GB 1461970 A GB1461970 A GB 1461970A GB 5393574 A GB5393574 A GB 5393574A GB 5393574 A GB5393574 A GB 5393574A GB 1461970 A GB1461970 A GB 1461970A
Authority
GB
United Kingdom
Prior art keywords
counterweight
ram
crane
pin
support
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
GB5393574A
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.)
Case LLC
Original Assignee
JI Case Co
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 JI Case Co filed Critical JI Case Co
Publication of GB1461970A publication Critical patent/GB1461970A/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
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib

Landscapes

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

Abstract

1461970 Crane counterweights J I CASE CO 13 Dec 1974 [22 April 1974] 53935/74 Heading B8B A crane (10), Fig. 1 (not shown), has a counterweight 30 mounted on a telescopic support 20 pivoted on crane base 14 at 26 and maintained horizontal by a pin 50. The counterweight 30 is moved from its retracted position, Fig. 2 (not shown), to its extended, operative position, as shown, by a fluid ram 54. Further, slight, extension of the ram 54 pivots the support 20 upwards to take the weight off the pin 50 which can then be removed whereupon retraction of the ram 54 pivotally lowers the counterweight to the ground as indicated in broken lines.
GB5393574A 1974-04-22 1974-12-13 Cranes Expired GB1461970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US462978A US3924753A (en) 1974-04-22 1974-04-22 Crane counterweight support and means for removing and mounting same

Publications (1)

Publication Number Publication Date
GB1461970A true GB1461970A (en) 1977-01-19

Family

ID=23838449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5393574A Expired GB1461970A (en) 1974-04-22 1974-12-13 Cranes

Country Status (6)

Country Link
US (1) US3924753A (en)
JP (1) JPS5532637B2 (en)
BR (1) BR7410546A (en)
CA (1) CA1013299A (en)
ES (1) ES432799A1 (en)
GB (1) GB1461970A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322094A (en) 1978-07-18 1982-03-30 Jeune Bobard Tractor load
CN111847283A (en) * 2020-08-06 2020-10-30 三一汽车起重机械有限公司 Crane

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU531998B2 (en) * 1978-09-05 1983-09-15 Coles Cranes Ltd. Counterweight removal system
USRE31400E (en) * 1979-02-21 1983-10-04 Mark Industries Self propelled and extensible boom
US4226300A (en) * 1979-02-21 1980-10-07 Mark Industries Self propelled and extensible boom lift
DE2917829A1 (en) * 1979-05-03 1980-11-13 Gottwald Kg Leo VEHICLE CRANE WITH TELESCOPIC BOOM
FR2486050B2 (en) * 1980-07-04 1987-02-27 Buzzichelli Lilian LIFTING APPARATUS COMPRISING AN ARROW AND A COUNTERWEIGHT WITH ADJUSTABLE RESPECTIVE POSITIONS
FR2536733B1 (en) * 1982-11-26 1986-03-07 Mongon Systemes CRANE BOOM WITH VARIABLE RANGE, WITH AUTOMATIC BALANCING DEVICE
GB8430389D0 (en) * 1984-12-01 1985-01-09 Bamford Excavators Ltd Earth moving machine
US4953722A (en) * 1988-11-09 1990-09-04 The Manitowoc Company, Inc. Crane and lift enhancing beam attachment with moveable counterweight
ES2036912B1 (en) * 1991-04-12 1994-01-01 Munarriz Aldaz Alberto TILTING COUNTERWEIGHT SYSTEM FOR DEPLOYABLE CRANES.
ES2054535B1 (en) * 1991-04-12 1995-08-01 Aldaz Alberto Munarriz IMPROVEMENTS IN THE SUBJECT OF THE MAIN PATENT N 9100941 FOR "TILTING COUNTERWEIGHT SYSTEM FOR DEPLOYABLE CRANES".
US5598935A (en) * 1993-03-18 1997-02-04 American Crane Corporation Frame structure for lift crane machinery
US5685563A (en) * 1996-03-19 1997-11-11 Ottestad; Jack B. Counterbalance system for short wheelbase vehicles
US5669517A (en) * 1996-06-11 1997-09-23 Genie Industries, Inc. Articulating boom incorporating a linkage counterweight
US5833268A (en) * 1996-12-06 1998-11-10 Aldrovandi; Louis Counterweight hoisting mechanism
CA2252446C (en) * 1997-10-31 2003-06-10 Grove U.S. L.L.C. Automatic leveling and synchronization system for counterweight removal and installation
US7967158B2 (en) 2006-10-27 2011-06-28 Manitowoc Crane Companies, Llc Mobile lift crane with variable position counterweight
US9278834B2 (en) 2009-08-06 2016-03-08 Manitowoc Crane Group, LLC Lift crane with moveable counterweight
CN102275836A (en) * 2011-06-07 2011-12-14 湖南中联重科专用车有限责任公司 Crane, clump weight loading and unloading mechanism for crane, and clump weight block
US8434787B2 (en) 2011-06-10 2013-05-07 Caterpillar Inc. Counterweight attachment and removal system and machine using same
DE102012006494B4 (en) 2012-03-30 2014-03-13 Manitowoc Crane Group France Sas Mobile crane with decoupling counterweight arrangement
JP6568086B2 (en) 2014-01-27 2019-08-28 マニタウォック クレイン カンパニーズ， エルエルシーＭａｎｉｔｏｗｏｃ Ｃｒａｎｅ Ｃｏｍｐａｎｉｅｓ， Ｌｌｃ Lifting crane with improved movable counterweight
EP3099620A4 (en) 2014-01-27 2017-10-11 Manitowoc Crane Companies, Inc. Height adjustment mechanism for an auxiliary member on a crane

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1020635A (en) * 1963-03-08 1966-02-23 Leavesley Engineering Ltd Counterbalancing mobile cranes
US3375021A (en) * 1966-05-20 1968-03-26 Bucyrus Erie Co Counterweight removal device
SE331969B (en) * 1966-12-22 1971-01-18 Contractors Plant Ltd
US3595410A (en) * 1969-08-18 1971-07-27 Deere & Co Tractor-mounted power assist means for elevating front-end weights
US3777900A (en) * 1971-12-20 1973-12-11 Sam Wallace Co Inc Building crane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322094A (en) 1978-07-18 1982-03-30 Jeune Bobard Tractor load
CN111847283A (en) * 2020-08-06 2020-10-30 三一汽车起重机械有限公司 Crane
CN111847283B (en) * 2020-08-06 2023-08-22 三一汽车起重机械有限公司 Crane

Also Published As

Publication number Publication date
CA1013299A (en) 1977-07-05
BR7410546A (en) 1976-06-22
US3924753A (en) 1975-12-09
JPS50138565A (en) 1975-11-05
ES432799A1 (en) 1976-12-16
JPS5532637B2 (en) 1980-08-26

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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