EP2055665A1 - Procédé de montage d'une flèche de grue - Google Patents

Procédé de montage d'une flèche de grue Download PDF

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Publication number
EP2055665A1
EP2055665A1 EP08016227A EP08016227A EP2055665A1 EP 2055665 A1 EP2055665 A1 EP 2055665A1 EP 08016227 A EP08016227 A EP 08016227A EP 08016227 A EP08016227 A EP 08016227A EP 2055665 A1 EP2055665 A1 EP 2055665A1
Authority
EP
European Patent Office
Prior art keywords
boom
luffing jib
main boom
jib
auxiliary
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.)
Granted
Application number
EP08016227A
Other languages
German (de)
English (en)
Other versions
EP2055665B1 (fr
Inventor
Hans-Dieter Dipl.-Ing. Willim
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.)
Liebherr Werk Ehingen GmbH
Original Assignee
Liebherr Werk Ehingen GmbH
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 Liebherr Werk Ehingen GmbH filed Critical Liebherr Werk Ehingen GmbH
Publication of EP2055665A1 publication Critical patent/EP2055665A1/fr
Application granted granted Critical
Publication of EP2055665B1 publication Critical patent/EP2055665B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66C23/82—Luffing gear
    • 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
    • B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads

Definitions

  • the invention relates to a method for erecting a telescopic boom main boom of a vehicle crane with a luffing jib, which is guyed over guy brackets and guy rods, and with a spatial boom bracing.
  • luffing jibs are mounted in such cases on the telescopic boom.
  • the luffing jibs can reach very long lengths, even exceeding the length of the main jib itself by far.
  • Such luffing jibs may consist of a luffing tip or a fixed tip.
  • the telescopic boom is connected to the telescopic boom extensions and the adapter pieces.
  • the spatial bracing is mounted, but not yet tense. It can also be an eccentric attachment of the guy rods at the outer end of the main boom according to the DE 20 2004 017 771 U1 respectively.
  • the foot piece of the luffing jib and the guy brackets are attached to the main boom.
  • the guying rods are placed on the luffing jib and connected to the end of the head piece of the luffing jib and a guy jib.
  • the foot piece of the luffing jib, the guy brackets and the guy rods together form a transport unit.
  • an element is provided, which is connectable to the end of the foot piece of the luffing jib. Since the connection between the guy rods and the foot piece is required to disassemble the entire boom, this connection is available when re-fitting and thus does not need to be made again.
  • the foot piece of the luffing jib is connected to the assembled luffing jib in the upper bolting points.
  • connection of the guy rod is separated with the foot of the luffing jib again and made the normal connection from the A-block to Wippspitzenende with the guy rods.
  • the telescopic boom of the main boom has not yet extended to operating length.
  • the telescoped main boom is erected in a steep position, with the outer end of the luffing jib resting on the ground on the carriage.
  • the luffing jib can pivot about the articulation points on the main boom.
  • the moment caused by the luffing jib is kept low and advantageously reduces the bearing friction in the telescope.
  • the outer end of the boom system is free and has no storage. All guidance of the long boom system is provided by the main boom.
  • the main boom is telescoped to the desired length.
  • the boom shot to be telescoped is to be bolted to the telescopic cylinder.
  • the respective telescopic sections are bolted wherein the connection of the Ausschubzylinders is solved with the telescopic shots.
  • the spatial bracing is tensioned.
  • the boom system now reaches its maximum load.
  • the largest load for the smallest telescopic profile occurs during assembly of the jib in about horizontal position.
  • the entire footweight of the luffing jib (plus the jib brackets, telescopic boom extension and corresponding adapters) with the large lever arm (eg length of the telescopic boom extension plus corresponding adapters and the foot piece of the jib) rests on the cross section of the smallest telescopic section. Even if this is retracted, it still forms the weakest link in the main boom. By this weakest link the maximum allowable lengths of the boom system, especially the length of the luffing jib are limited by the forces and moments occurring during this assembly process.
  • the object of the invention is therefore to provide a method for erecting a crane jib, which is developed such that comparatively larger boom systems can be mounted and erected.
  • this object is achieved by a method with the central Aufricht Kunststoffen of claim 1.
  • the previously known method according to the invention is now changed to the effect that the main boom is braced before connecting to the luffing jib by means of the spatial bracing.
  • This step relieves the smallest telescope shot, since the tension on this cross-section is significantly reduced by the bracing.
  • the smallest telescope shot is relieved, which in turn means that comparatively longer boom systems can be erected without increasing the Teleskopschußqueriteses.
  • the spatial bracing can be mounted and tensioned to connect the isolated leg of the luffing jib with the luffing jib, wherein the luffing jib is movably mounted on one or more cars.
  • the main boom can be charged higher by the strained spatial bracing.
  • the main boom is made steep and telescoped out after solving the spatial bracing to the desired length.
  • the main boom is not so heavily loaded, so that in this position, the spatial bracing can be solved again.
  • the hinged end of the luffing jib is raised with and the outer end of the luffing jib rolls freely on the at least one cart.
  • the maximum erectile boom length is often limited by the performance of the at least one luffing cylinder.
  • the erection of boom systems An assembly process that does not fall under the guidelines for operating cranes. Overload monitoring systems are not active during the month.
  • an auxiliary crane is used which assists the erection of the main boom by means of the luffing cylinder provided for this purpose. During the erection process, the auxiliary crane inserts a further lifting force into the boom system at a defined point. As a result, the at least one luffing cylinder of the crane to be mounted is relieved.
  • the auxiliary crane is struck on at least one bollard arranged on the main boom.
  • the bollard is designed in its shape so that an automatic unhooking and hanging the stop side is possible.
  • an auxiliary rope is connected to the hoist rope during erection, which runs off an auxiliary winch and is acted upon by this with a defined train.
  • the crane boom 10 according to the embodiment shown here consists of a telescopic boom 12, a telescopic boom extension 14 and an adapter piece 16, which together form the main boom 18, and an attached luffing jib 20, which includes a removable foot 22.
  • the luffing jib 20 is first completely assembled without the foot piece 22, wherein the head piece of the luffing jib 20 rests on a carriage 24.
  • the spatial bracing 26 is mounted but not yet tensioned.
  • the foot 22 and the jib 28, 30 are attached to the main boom 18.
  • the bracing rods 32 between the brace 30 and the end of the foot are already present. They are deposited on the luffing jib.
  • a connection is made between the guideways belonging to the transport unit and the outer end of the jib (header).
  • the foot 22 of the luffing jib 20 is connected to the assembled luffing jib 20 in the upper bolting points 34 (see FIGS FIG. 5 ).
  • a connection between the guy block 30 and the foot piece 22 of the luffing jib is produced via the guy rods 32.
  • the guy brackets 28 and 30 can be tilted.
  • the foot piece 22 is raised until the foot piece 22 of the luffing jib can be connected to the preassembled luffing jib 20 in the lower bolting points.
  • the spatial bracing 26 is tensioned before the main load during the closing of the jib boom 20 acts on the main boom 18. By clamping the spatial bracing of the main boom of the smallest cross-section of the main boom is relieved.
  • a rocking cylinder 36 is initially provided. In order to support this luffing cylinder, it is assisted during erecting of the main jib 18 by an auxiliary crane not shown here (see lifting force in the direction of the arrow F according to FIGS FIGS. 7 and 8 ).
  • the recorded load is displayed here.
  • the driver of the auxiliary crane brings in accordance with its display in the crane cab a force lying in defined areas in the boom 18 of the main crane during the righting and depositing operation.
  • the utilization of the luffing cylinder is displayed, in part also monitored and kept within the permissible range. The procedure specified here by erecting the crane is reversed while the crane is being stored.
  • a common control can coordinate the movement of the lifting cylinder 36 on the one hand and the stroke of the auxiliary crane, not shown here, on the other hand.
  • the pressure of the rocker cylinder 36 of the main crane is advantageously displayed.
  • the pressure is also monitored against a specified limit (only when the boom system is removed).
  • the crane operator swings the luffing jib off to regain guidance and relief over the carriage at the top of the luffing jib.
  • the crane operator tilts the main boom until the movement is stopped by the overload monitoring of the luffing cylinder.
  • the rope on the hook of the auxiliary crane on a special bollard 50 which corresponds to the FIGS. 14 and 15 is laterally disposed on a telescopic boom extension 14 of the main boom, hooked.
  • the special bollard 50 may be arranged on both sides of the telescopic boom extension 14.
  • the cross section of the smallest telescopic section in the main boom can also be relieved.
  • clamping rods 33 are arranged, which are connected to the head of the lance boom 20.
  • FIG. 9 Main boom 18 has reached its upright position. In this position, the spatial bracing 26 can be released again. Subsequently, the telescopic boom 12 of the main boom 18 is telescoped out, until it reaches its desired length, as in FIG. 10 is shown. After appropriate Verbolzen the individual telescopic sections of the telescopic boom 12, the spatial bracing 26 is stretched again.
  • FIGS. 12 and 13 Based on FIGS. 12 and 13 is shown schematically, which advantages are that the telescopic cylinder is extended only in the upright position.
  • the forces and moments acting here on the telescopic boom 12 are substantially lower (cf. FIG. 13 ) as in a Austeleskopieren in a horizontal position (see. FIG. 12 ).
  • G1, G2, G3 and G4 respectively, the effective weight forces of the individual components attached to the telescopic boom are indicated.
  • the luffing jib 20 is thus erected only after appropriate Austeleskopieren the main boom 18 and after appropriate spatial bracing of the main boom 18, wherein the upright position in FIG. 11 is shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP08016227A 2007-10-29 2008-09-15 Procédé de montage d'une flèche de grue Active EP2055665B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007051540 2007-10-29
DE102007056289A DE102007056289B4 (de) 2007-10-29 2007-11-22 Verfahren zum Aufrichten eines Kranauslegers

Publications (2)

Publication Number Publication Date
EP2055665A1 true EP2055665A1 (fr) 2009-05-06
EP2055665B1 EP2055665B1 (fr) 2010-11-10

Family

ID=40490361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08016227A Active EP2055665B1 (fr) 2007-10-29 2008-09-15 Procédé de montage d'une flèche de grue

Country Status (5)

Country Link
US (1) US9371215B2 (fr)
EP (1) EP2055665B1 (fr)
JP (1) JP5675041B2 (fr)
CN (1) CN101423179B (fr)
DE (2) DE102007056289B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2223882A3 (fr) * 2009-02-26 2010-11-24 Terex Demag GmbH Procédé et dispositif destinés au montage et au démontage d'un dispositif supplémentaire sur la flèche principale d'une grue mobile
US10138096B2 (en) 2014-08-20 2018-11-27 Liebherr-Werk Ehingen Gmbh Automatic erection of a crane
US20220194754A1 (en) * 2020-12-22 2022-06-23 Tadano Demag Gmbh Mobile crane with a luffing main boom and with an additional boom system

Families Citing this family (23)

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DE102009020338B4 (de) * 2009-05-07 2011-07-21 Manitowoc Crane Group France Sas Teleskopkran mit selbstmontierbarer Abspanneinrichtung und Montageverfahren für eine Abspanneinrichtung
DE102010020016B4 (de) 2010-05-10 2021-04-29 Liebherr-Werk Ehingen Gmbh Kran und Verfahren zum Aufrichten des Krans
DE102010046403B4 (de) * 2010-09-23 2016-06-02 Liebherr-Werk Ehingen Gmbh Verfahren zum Rangieren und Verfahren eines Fahrzeugkrans
DE102011122812A1 (de) * 2011-05-09 2012-11-15 Liebherr-Werk Ehingen Gmbh Verfahren zur Montage eines Mobilkrans sowie Mobilkran
CN102491197A (zh) * 2011-12-29 2012-06-13 郑州新大方重工科技有限公司 利用重力实现伸缩的吊臂及含有该吊臂的起重机
CN102815630A (zh) * 2012-09-07 2012-12-12 上海三一科技有限公司 一种辅助起臂装置及履带起重机
CN102897677B (zh) * 2012-09-24 2014-11-19 三一重工股份有限公司 起重机副臂自拆装装置及方法、起重机
US9206021B2 (en) * 2012-09-26 2015-12-08 Kobelco Cranes Co., Ltd. Crane and crane assembling method
DE102012022621B4 (de) * 2012-11-19 2014-11-20 Liebherr-Werk Ehingen Gmbh Vorrichtung zum Aufwippen eines Kranauslegersystems
DE102013015311B4 (de) * 2013-09-16 2020-07-09 Liebherr-Werk Ehingen Gmbh Verfahren zum Aufrichten und/oder Ablegen eines langen Auslegersystems
DE102015001619B4 (de) * 2015-02-09 2021-03-04 Liebherr-Werk Ehingen Gmbh Auslegersystem für einen Mobilkran sowie Mobilkran
DE102015002626A1 (de) * 2015-03-03 2016-09-08 Liebherr-Werk Ehingen Gmbh Teleskopausleger eines Krans und Verfahren zu seiner Abspannung, sowie zum Aufrichten von Teleskopverlängerungen
JP6787033B2 (ja) * 2016-10-19 2020-11-18 コベルコ建機株式会社 クレーンの組み立て時におけるマストの後傾作業の方法
JP6562049B2 (ja) 2017-08-18 2019-08-21 コベルコ建機株式会社 リンク格納装置、およびリンク格納方法
JP6638718B2 (ja) * 2017-12-18 2020-01-29 コベルコ建機株式会社 クレーン立組方法
DE102018114832A1 (de) * 2018-06-20 2019-12-24 Liebherr-Werk Ehingen Gmbh Großkran mit Ausleger
DE102018116575A1 (de) * 2018-07-09 2020-01-09 Terex Global Gmbh Stütze für den hinteren Abspannstrang eines Teleskopkrans
CN109264582A (zh) * 2018-12-05 2019-01-25 中联重科股份有限公司 起重机的起重臂控制方法、装置及起重机
JP7126981B2 (ja) * 2019-03-29 2022-08-29 住友重機械建機クレーン株式会社 クレーン
CN110436359B (zh) * 2019-08-16 2024-02-23 上海市机电设计研究院有限公司 用于吊装风电预制砼塔筒的转角变径施工平台
DE102020129454B4 (de) 2020-11-09 2023-08-17 Tadano Demag Gmbh Fahrzeugkran mit einem Auslegersystem
US11884520B2 (en) * 2020-12-21 2024-01-30 National Oilwell Varco, L.P. Mobile tower crane systems and methods
DE102021106745A1 (de) * 2021-03-19 2022-09-22 Liebherr-Werk Nenzing Gmbh Hebezeug mit einer Vorrichtung zum Unterstützen oder vollautomatischen Durchführen eines Aufricht- und/oder Ablegevorgangs eines Auslegersystems sowie entsprechendes Verfahren

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DE202004017771U1 (de) 2004-11-16 2006-03-23 Liebherr-Werk Ehingen Gmbh Kranausleger
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US3968884A (en) * 1974-12-20 1976-07-13 Harnischfeger Corporation Storage means for jib for telescopic boom of mobile crane
JPH10316366A (ja) * 1997-05-21 1998-12-02 Tadano Ltd ラフィングジブ組み立て方法
JP2002255478A (ja) * 2001-02-23 2002-09-11 Hitachi Constr Mach Co Ltd ラッフィングジブクレーン及びその組立方法
DE20218971U1 (de) * 2002-12-06 2004-04-08 Liebherr-Werk Ehingen Gmbh Mobilkran mit langen Auslegern
DE202004017771U1 (de) 2004-11-16 2006-03-23 Liebherr-Werk Ehingen Gmbh Kranausleger
DE102005049606A1 (de) * 2005-10-17 2007-04-19 Liebherr-Werk Ehingen Gmbh Fahrzeugkran mit Zusatzausleger und Verfahren zur Demontage des Zusatzauslegers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2223882A3 (fr) * 2009-02-26 2010-11-24 Terex Demag GmbH Procédé et dispositif destinés au montage et au démontage d'un dispositif supplémentaire sur la flèche principale d'une grue mobile
US10138096B2 (en) 2014-08-20 2018-11-27 Liebherr-Werk Ehingen Gmbh Automatic erection of a crane
US20220194754A1 (en) * 2020-12-22 2022-06-23 Tadano Demag Gmbh Mobile crane with a luffing main boom and with an additional boom system
US11884521B2 (en) * 2020-12-22 2024-01-30 Tadano Demag Gmbh Mobile crane with a luffing main boom and with an additional boom system

Also Published As

Publication number Publication date
EP2055665B1 (fr) 2010-11-10
JP5675041B2 (ja) 2015-02-25
JP2009107842A (ja) 2009-05-21
US9371215B2 (en) 2016-06-21
DE502008001753D1 (de) 2010-12-23
CN101423179A (zh) 2009-05-06
DE102007056289A1 (de) 2009-04-30
DE102007056289B4 (de) 2009-06-04
US20090127219A1 (en) 2009-05-21
CN101423179B (zh) 2012-01-11

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