EP0621229A1 - Flèche télescopique de grue - Google Patents

Flèche télescopique de grue Download PDF

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Publication number
EP0621229A1
EP0621229A1 EP94104662A EP94104662A EP0621229A1 EP 0621229 A1 EP0621229 A1 EP 0621229A1 EP 94104662 A EP94104662 A EP 94104662A EP 94104662 A EP94104662 A EP 94104662A EP 0621229 A1 EP0621229 A1 EP 0621229A1
Authority
EP
European Patent Office
Prior art keywords
telescopic
section
sections
rope
telescopic section
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.)
Ceased
Application number
EP94104662A
Other languages
German (de)
English (en)
Inventor
Gerd Dipl.-Ing. Erdmann
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.)
Grove US LLC
Original Assignee
Fried Krupp AG Hoesch Krupp
Kidde Industries 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 Fried Krupp AG Hoesch Krupp, Kidde Industries Inc filed Critical Fried Krupp AG Hoesch Krupp
Publication of EP0621229A1 publication Critical patent/EP0621229A1/fr
Ceased legal-status Critical Current

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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

Definitions

  • the invention relates to a telescopic boom channel with a boom base body and a plurality of nested telescopic sections that can be extended from it via a hydromechanical telescopic device connected to it.
  • Such telescopic boom cranes are known in various designs.
  • the boom is usually telescoped either fully hydraulically or hydraulically in combination with ropes.
  • a telescopic section operated via a cable is moved synchronously and in the same direction as a hydraulically operated telescopic section.
  • a hydromechanical telescopic system with a basic body, several telescopic parts that can be telescoped from it and a multi-stage hydraulic cylinder arrangement has been proposed, in which the basic body and the first and second telescopic parts and the second to fourth telescopic parts are each kinematically connected to one another by an extension and retracting cable such that the first and second or the third and fourth telescopic part can be extended synchronously.
  • the invention has set itself a further improvement, which is achieved with the idea of lifting a hydraulic telescopic device in one direction for the immediate extension of a telescopic shot and in the other direction - after locking the telescopic shot - for the indirect one use a rope to extend another telescopic shot.
  • a movable telescopic cylinder of the telescopic device with a telescopic section and the telescopic sections with each other and with the base body can be locked in their respective end positions and that a telescopic cable between the foot of the telescopic cylinder and the foot of the second or another telescopic section is guided over a deflection roller at the tip of the previous telescopic section and a return cable between the tip of the movable telescopic cylinder and the foot of the second or further telescopic section is guided via a deflecting roller at the base of the previous telescopic section.
  • the reverse stroke of the telescopic cylinder is used to extend the next telescopic section so that the telescopic cylinder is again in its original position near the boom support after telescoping.
  • the simplest application of the invention results when the telescopic boom crane is designed with two telescopic sections and a single-stage telescopic device.
  • the telescopic boom crane is equipped with three telescopic sections and a two-stage telescopic device acting on the first and second telescopic sections. Then the telescopic rope and the return rope for the third telescopic section are attached to the second movable telescopic cylinder.
  • An alternative application of the invention results in a telescopic boom crane with three telescopic sections and one-stage telescopic device in such a way that a telescopic rope between the telescopic cylinder and the foot of the second telescopic section via a deflection roller at the tip of the first telescopic section and a return cable between the telescopic cylinder and the Foot of the second telescopic shot via a deflection roller at the foot of the first telescopic shot and a second telescopic rope between the tip of the first telescopic shot and the foot of the third telescopic shot via a deflecting roller at the tip of the second telescopic shot and a second return rope between the tip of the first telescopic shot and the foot of the third telescopic section is guided over a deflection roller at the foot of the second telescopic section.
  • the invention can be implemented just as cheaply in a telescopic jib crane with four telescopic sections and a two-stage telescopic device.
  • a first telescopic rope and a return rope for the third telescopic section are then attached to the second movable telescopic cylinder and a second telescopic rope and a return rope for the fourth telescopic section are attached to the second telescopic section and guided over pulleys on the third telescopic section.
  • interlocks between movable telescopic cylinders and the base body and telescopic sections as well as telescopic sections with one another and with the base body are also provided in intermediate positions.
  • the optimal effect of the invention such as improving the load and bending moment curve during telescoping and the load condition after telescoping, can also be achieved for any intermediate positions between telescoping an even number of telescopic sections and for the positions traveled through until these intermediate positions are reached.
  • Telescopic sections 3, 4, 5 and 6 are nested inside one another on a substructure (not shown), for example a rotating device on a chassis, which can be pivoted vertically about a cantilever foot axis 1.
  • the base body 2 contains a one- or two-stage telescopic device whose telescopic piston 7 is connected to it and whose movable telescopic cylinder 8 can be moved hydraulically relative to the telescopic piston 7.
  • the second telescopic cylinder 9 can be moved hydraulically relative to the first telescopic cylinder.
  • a telescopic cable 11 is attached via a deflection roller 10 at the tip of the first telescopic section 3 to the base of the second telescopic section 4.
  • a return cable 12 is guided from the tip of the first telescopic cylinder 8 via a deflection roller 13 at the foot of the first telescopic section 3 to the foot of the second telescopic section. Locks on the telescopic cylinder and telescopic sections allow these to be fixed in any position.
  • the movement sequence shown in FIGS. 1a, b and c can thus be achieved, namely extending the telescopic sections 3 and 4 together from the base body 2 by extending the telescopic cylinder 8, then fixing the first telescopic section 3 and then further extending the second telescopic section 4 by retracting of the telescopic cylinder 8.
  • the telescopic sections 3 and 4 are retracted accordingly in reverse.
  • the telescopic sections 3 and 4 can be moved through Extend the telescopic cylinders 8 and 9 one after the other or in any movement ratio to each other.
  • the third telescopic section 5 is extended via the telescopic cable 11 by retracting the second telescopic section 9.
  • the one-stage design of the telescopic device with four telescopic sections allows the second and third telescopic sections 4 and 5 to be simultaneously extended via the first and a second telescopic cable 11 and 14, which the latter is guided over a deflection roller 15 at the tip of the second telescopic section 4 and to which a return cable 17 is assigned, which is guided over a deflection roller 16 at the foot of the second telescopic section 4.
  • FIGS. 4a, b and c For a boom with four telescopic sections, the embodiment shown in FIGS. 4a, b and c with a two-stage telescopic device is suitable.
  • the third and fourth telescopic sections 5 and 6 are simultaneously extended by retracting the second telescopic cylinder 9 via the first and second telescopic cables 11 and 14.
  • Further applications in other telescopic booms result from a corresponding transfer of the invention to its design.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP94104662A 1993-04-10 1994-03-24 Flèche télescopique de grue Ceased EP0621229A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4311964 1993-04-10
DE4311964A DE4311964A1 (de) 1993-04-10 1993-04-10 Teleskopauslegerkran

Publications (1)

Publication Number Publication Date
EP0621229A1 true EP0621229A1 (fr) 1994-10-26

Family

ID=6485322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104662A Ceased EP0621229A1 (fr) 1993-04-10 1994-03-24 Flèche télescopique de grue

Country Status (4)

Country Link
US (1) US5465855A (fr)
EP (1) EP0621229A1 (fr)
JP (1) JPH06305689A (fr)
DE (1) DE4311964A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0767135A1 (fr) * 1995-10-03 1997-04-09 Autogru Rigo S.p.A. Agencement pour commander et présélectionner l'extension des sections individuelles du mât télescopique d'une grue ou analogue
CN102180414A (zh) * 2011-05-11 2011-09-14 湖南中联重科专用车有限责任公司 起重机及起重机副臂箱型臂的展收方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29806602U1 (de) * 1998-04-09 1999-05-12 BISON stematec Maschinenbau- und Hubarbeitsbühnen Produktionsgesellschaft mbH, 02708 Löbau Teleskopausleger für Hubarbeitsbühnen
KR20020090637A (ko) * 2001-05-29 2002-12-05 박동수 산악지 시공용 크레인
US20030213766A1 (en) * 2002-05-15 2003-11-20 Komatsu Utility Europe S.P.A. Telescopic arm
CN102381642B (zh) * 2011-11-29 2013-04-24 徐州天地重型机械制造有限公司 一种同步伸缩装置
ITMO20120312A1 (it) 2012-12-20 2014-06-20 Cnh Italia Spa Braccio telescopico.
CN103342298B (zh) * 2013-07-08 2015-09-16 徐州重型机械有限公司 一种用于起重机的节臂拆装装置
IT201800004537A1 (it) * 2018-04-16 2019-10-16 Piattaforma aerea
CN109882080A (zh) * 2019-01-29 2019-06-14 青岛达邦钻机有限责任公司 全液压钻车潜孔钻臂实现可伸缩的方法
CN110980555A (zh) * 2019-12-27 2020-04-10 三一汽车起重机械有限公司 一种起重机伸缩臂及起重机
CN112607678A (zh) * 2020-12-30 2021-04-06 徐州徐工随车起重机有限公司 一种高空作业车四节臂伸缩机构
CN113928936A (zh) * 2021-09-30 2022-01-14 中船重工海为郑州高科技有限公司 一种用于高铁线缆敷设的放线臂

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2046652A1 (de) * 1969-10-03 1971-04-15 Eisengiesserei U Maschinenfabr Teleskopausleger
WO1986000607A1 (fr) * 1984-07-09 1986-01-30 Ab Tico Dispositif du genre qui comprend au moins trois parties mobiles coordonnees
EP0446115A1 (fr) * 1990-03-06 1991-09-11 Ppm Societe Anonyme: Vérin multiple, circuit d'alimentation d'un tel vérin, et flèche télescopique faisant application de ce vérin
FR2681649A1 (fr) * 1991-09-24 1993-03-26 Krupp Industrietech Systeme de telescopage hydromecanique, notamment pour grue automobile.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7015460U (de) * 1970-04-24 1970-08-06 Hofmann Maschf Teleskopausleger.
US3809249A (en) * 1972-03-15 1974-05-07 Fulton Industries Telescopic crane boom with chain actuation of fly section
GB1594096A (en) * 1976-11-11 1981-07-30 Coles Cranes Ltd Telescopic booms
US4406375A (en) * 1980-07-02 1983-09-27 Jlg Industries Inc. Telescopic boom construction
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
SU1463707A1 (ru) * 1986-07-23 1989-03-07 Дрогобычский завод автомобильных кранов Телескопическа стрела крана
SU1685859A1 (ru) * 1988-08-31 1991-10-23 Одесское производственное объединение тяжелого краностроения им.Январского восстания Телескопическа стрела грузоподъемного устройства
SU1728123A1 (ru) * 1989-09-25 1992-04-23 Дрогобычский завод автомобильных кранов Телескопическа стрела крана

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2046652A1 (de) * 1969-10-03 1971-04-15 Eisengiesserei U Maschinenfabr Teleskopausleger
WO1986000607A1 (fr) * 1984-07-09 1986-01-30 Ab Tico Dispositif du genre qui comprend au moins trois parties mobiles coordonnees
EP0446115A1 (fr) * 1990-03-06 1991-09-11 Ppm Societe Anonyme: Vérin multiple, circuit d'alimentation d'un tel vérin, et flèche télescopique faisant application de ce vérin
FR2681649A1 (fr) * 1991-09-24 1993-03-26 Krupp Industrietech Systeme de telescopage hydromecanique, notamment pour grue automobile.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0767135A1 (fr) * 1995-10-03 1997-04-09 Autogru Rigo S.p.A. Agencement pour commander et présélectionner l'extension des sections individuelles du mât télescopique d'une grue ou analogue
CN102180414A (zh) * 2011-05-11 2011-09-14 湖南中联重科专用车有限责任公司 起重机及起重机副臂箱型臂的展收方法
CN102180414B (zh) * 2011-05-11 2012-12-05 湖南中联重科专用车有限责任公司 起重机及起重机副臂箱型臂的展收方法

Also Published As

Publication number Publication date
JPH06305689A (ja) 1994-11-01
US5465855A (en) 1995-11-14
DE4311964A1 (de) 1994-10-13

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