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GB2096097B - Telescopic jib cranes - Google Patents

Telescopic jib cranes

Info

Publication number
GB2096097B
GB2096097B GB8209736A GB8209736A GB2096097B GB 2096097 B GB2096097 B GB 2096097B GB 8209736 A GB8209736 A GB 8209736A GB 8209736 A GB8209736 A GB 8209736A GB 2096097 B GB2096097 B GB 2096097B
Authority
GB
United Kingdom
Prior art keywords
counterweight
chassis
jib
telescopic
vary
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
GB8209736A
Other versions
GB2096097A (en
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 claimed from DE19813113763 external-priority patent/DE3113763A1/en
Priority claimed from DE19813139853 external-priority patent/DE3139853A1/en
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of GB2096097A publication Critical patent/GB2096097A/en
Application granted granted Critical
Publication of GB2096097B publication Critical patent/GB2096097B/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
    • 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
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/823—Bracing equipment acting in vertical direction

Landscapes

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

Abstract

A crane has a chassis 18 and a telescopic jib having a lowest telescopic section 1 pivoted to the chassis and movable in a vertical plane by one or more luffing rams 19. Extending perpendicularly from the section 1 is a frame 5 braced by cabling connecting the frame to the foot end of the jib, and connected by cabling 9 with an extensible telescopic section. A counterweight 22 is supported on a mast 21, the inclination of which is adjustable by winch 24 either to maintain the counterweight at a fixed position relative to the chassis or to vary the position of the counterweight so as to vary the moment imparted by the counterweight to compensate for changes in moment as the jib is raised or lowered. <IMAGE>
GB8209736A 1981-04-04 1982-04-01 Telescopic jib cranes Expired GB2096097B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813113763 DE3113763A1 (en) 1981-04-04 1981-04-04 Vehicle crane with telescopic jib
DE19813139853 DE3139853A1 (en) 1981-10-07 1981-10-07 Vehicle crane with telescopic jib

Publications (2)

Publication Number Publication Date
GB2096097A GB2096097A (en) 1982-10-13
GB2096097B true GB2096097B (en) 1984-12-19

Family

ID=25792481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8209736A Expired GB2096097B (en) 1981-04-04 1982-04-01 Telescopic jib cranes

Country Status (1)

Country Link
GB (1) GB2096097B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101983894A (en) * 2010-11-17 2011-03-09 武汉船用机械有限责任公司 Pretension and lay-off method and device of crane jib for ship
CN106966309A (en) * 2017-05-10 2017-07-21 中铁工程机械研究设计院有限公司 A kind of arm of multiple equilibrium elevation angle adjustable shelves locking device and method

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606109A1 (en) * 1995-12-12 1997-06-19 Liebherr Werk Ehingen Mobile crane
DE10022658B4 (en) 1999-06-28 2007-10-04 Terex-Demag Gmbh & Co. Kg telescopic crane
US7137518B2 (en) 1999-06-28 2006-11-21 Terex-Demag Gmbh & Co. Kg Telescopic crane
US6341665B1 (en) 1999-09-13 2002-01-29 Grove U.S. L.L.C. Retractable counterweight for straight-boom aerial work platform
DE10128986A1 (en) 2001-06-11 2002-12-19 Demag Mobile Cranes Gmbh Mobile crane has load increasing device permanently connected to main jib part and with individual weight of telescopic extensions each reduced to avoid exceeding maximum permissible weight without having to reduce number of extensions
DE10315989B4 (en) * 2003-04-08 2007-10-25 Grove U.S. Llc Clamping system for a mobile telescopic crane
US7546928B2 (en) 2006-10-27 2009-06-16 Manitowoc Crane Companies, Inc. Mobile lift crane with variable position counterweight
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
CN102849630B (en) * 2012-09-27 2015-03-18 中联重科股份有限公司 Equal length keeping method for rear tensioning device and crane
CN103613012A (en) * 2013-12-02 2014-03-05 广西大学 Amplitude changing device of crane capable of changing angles
WO2015113048A1 (en) 2014-01-27 2015-07-30 Manitowoc Crane Companies, Llc Lift 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101983894A (en) * 2010-11-17 2011-03-09 武汉船用机械有限责任公司 Pretension and lay-off method and device of crane jib for ship
CN106966309A (en) * 2017-05-10 2017-07-21 中铁工程机械研究设计院有限公司 A kind of arm of multiple equilibrium elevation angle adjustable shelves locking device and method

Also Published As

Publication number Publication date
GB2096097A (en) 1982-10-13

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Legal Events

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

Effective date: 19980401