EP2210853A2 - Système de verrouillage pour bras de grue télescopique doté d'une unité de verrouillage déplaçable - Google Patents

Système de verrouillage pour bras de grue télescopique doté d'une unité de verrouillage déplaçable Download PDF

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Publication number
EP2210853A2
EP2210853A2 EP09176745A EP09176745A EP2210853A2 EP 2210853 A2 EP2210853 A2 EP 2210853A2 EP 09176745 A EP09176745 A EP 09176745A EP 09176745 A EP09176745 A EP 09176745A EP 2210853 A2 EP2210853 A2 EP 2210853A2
Authority
EP
European Patent Office
Prior art keywords
locking
telescoping cylinder
locking unit
telescopic
locking system
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
EP09176745A
Other languages
German (de)
English (en)
Other versions
EP2210853B1 (fr
EP2210853A3 (fr
Inventor
Johannes Schürmann
Dieter Stührwoldt
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.)
Manitowoc Crane Group France SAS
Original Assignee
Manitowoc Crane Group France SAS
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 Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP2210853A2 publication Critical patent/EP2210853A2/fr
Publication of EP2210853A3 publication Critical patent/EP2210853A3/fr
Application granted granted Critical
Publication of EP2210853B1 publication Critical patent/EP2210853B1/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
    • B66C23/64—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

Definitions

  • the invention relates to a locking system for a telescopic crane boom, in particular for a mobile crane.
  • a telescoping cylinder for the method is provided a plurality of telescopic parts, which has a locking unit.
  • This locking unit in turn serves to produce a lock between the telescoping cylinder and one of the telescopic parts that is about to extend or retract.
  • the present invention relates to a telescopic boom in which a telescoping cylinder extends and locks boom parts.
  • Modern mobile cranes are used to lift increasingly heavy loads at ever-increasing heights.
  • the claim of users to use a high-performance mobile crane with as little dead weight as possible in order to save on logistics costs is increasing.
  • the aim is to get a mobile crane with the highest possible load on as few axles within the permissible axle loads, which on the one hand has a favorable effect on the maneuverability and on the other lowering on the total cost of the crane.
  • the telescopic boom is a core element of the mobile crane; It determines maximum lifting height and carrying capacity.
  • the boom length is determined by the number and length of the individual telescope parts.
  • the individual telescope parts must keep an overlap in the extended state, so that the frictional connection perpendicular to the boom direction is ensured with each other.
  • the traction in the boom direction is achieved by the locking of the telescopes. Due to the design, the telescopic parts in the retracted state can not be completely retracted into each other. At the front end are to stiffen the telescopic parts collar parts that survive outside. Furthermore, the locking points for the telelocking are arranged longitudinally in front of each other. Thus, the telescoping cylinder can be locked with a telescopic part, so a path in the longitudinal direction of the boom must be covered to bring the locking unit at a height with the telescope to be locked.
  • the telescoping cylinder must be extended together with the locking unit for each telescopic part according to a piece and thereby loses part of its total stroke. Therefore, taking into account the total stroke of the telescopic cylinder, the front telescopic parts can not be extended as far as the rear ones. This results in an unnecessarily large overlap of the front telescopic parts in the extended state and an associated loss of boom overall length.
  • the locking unit is arranged longitudinally displaceable on the telescoping cylinder.
  • the position of the telescoping cylinder and the position of the locking unit which always caused each other according to the prior art, are decoupled from each other.
  • this can be achieved without a movement of the telescoping cylinder or even against a movement of the telescoping cylinder in a different direction
  • Approach locking point by the locking device which significantly increases the functionality and greatly reduced or eliminated restrictions on the operation or mode of operation.
  • the path that the locking unit can travel or the location that the locking unit can reach is no longer limited by the movability of the telescoping cylinder or its arrangement freedom.
  • additional Teleskopierweg won or length can be saved on the telescoping cylinder, which in turn saves overall boom weight and thus optimizes the crane as a whole.
  • the locking unit in a fixable manner on the telescopic cylinder, in particular fixable in any position. It can also be designed as a second stage on the telescoping cylinder or arranged on a second stage of the telescoping cylinder.
  • at least one length measuring device or a length transmitter is provided, which can detect the position of locking unit and telescoping cylinder, in particular the relative position of the two or their absolute positions. According to the invention and especially with such a configuration can then, after the correct position of the locking unit found and this was locked with the corresponding telescope, for example, a seat valve is closed and fixed with the cylinder stage of the locking unit. Then the steel construction lock to the next telescopic part can be solved, and the telescoping cylinder can extend the just engaged with the locking unit engaged telescope part, the full stroke of the telescoping cylinder is available.
  • Moving the locking unit in particular the second stage of Teleskopierzylinders with the locking unit thereon, is carried out according to an embodiment of the invention in the powerless unlocked state of Teleskopierzylinders, and accordingly only small forces are required for moving, from the hydraulic supply from the cylinder bushing for extending can be applied when the locking unit - according to a variant according to the invention - can be moved by hydraulic loading on Teleskopierzylinder.
  • a hydraulic circuit can be provided, which controls an actuation and / or fixation of the displaceable locking unit in conjunction with the extension hydraulics of the telescoping cylinder.
  • the retraction is then preferably by a releasable connection to the ring side of Teleskopierzylinders.
  • the locking unit is displaceable according to an embodiment by a distance on the telescoping cylinder, which corresponds to at least the distance of all telescopic boom unlockings in the retracted state of the boom.
  • a distance on the telescoping cylinder which corresponds to at least the distance of all telescopic boom unlockings in the retracted state of the boom.
  • FIG. 1 In a schematic longitudinal sectional view, there is shown a telescopic boom which comprises a main body 11 and four extendable telescopic parts 1 to 4.
  • the base body 11 In the base body 11 is the telescopic cylinder 10.
  • the locking unit 21 On the outer cylinder tube of the telescoping cylinder 10 runs the locking unit 21, which consists of a second cylinder stage 6 and the cylinder lock 5.
  • the second cylinder stage 6 is located above the outer tube 8 of the telescoping cylinder 10, which is shown separately here.
  • the actuation 7 for the steel construction lock 9 is arranged on the telescoping cylinder 10, which locks the individual telescope parts to one another when they have been brought into an operating state.
  • exporting takes place-in particular automatically-in the order described below:
  • All telescopic parts 1 to 4 are initially retracted and locked together (Stahlbauverrieglung 9). Now moves the second stage 6 in the foot of the telescope 4 and is there in the door provided for locking (recess) locked. The steel construction lock 9 to the telescope 3 is released, and the telescoping cylinder 10 moves with the telescope 4 maximum, to lock it there with the telescope 3. Then the cylinder lock 5 is released and the telescoping cylinder 10 completely retracted. Now the second cylinder stage 6 is retracted so far, until the foot piece is reached by the telescope 3 to lock there. In this way, all telescope parts 1 to 4 can be extended one after the other.
  • the extendable length of the telescopic part 4 is thanks to sliding locking unit 21 equal to the length Tges.
  • the length would be shortened by ⁇ T4, whereas in the present invention an extension of the entire boom in the extended state may take place by the sum of all illustrated ⁇ ST.
  • the locking unit 21 can be made so far displaced that the stroke of the telescoping cylinder 10 no longer has to correspond to the mobile way of the telescope part. In this case, telescoping cylinder 10 and locking unit 21 share the total stroke of a telescopic part 1 to 4, and thus the total length of the telescoping cylinder 10 can be significantly shortened.
  • the second stage of Teleskopierzylinders 20 from the cylinder tube 26, which is the outer cylinder tube encloses the actual telescoping cylinder 20.
  • the oil volumes 30 and 31 are based on the ring 32 fixedly connected to (or part of) the telescoping cylinder 20.
  • the cylinder feedthrough 35 serves to hydraulically supply the valve unit 28. From here, the supply is switched as required to the cylinder lock 25, the steel construction lock 29 or second cylinder stage 26 in order to displace the entire locking unit 21. To push out in the direction of travel, the load-facing side of the ring 31 is connected to the relieved ring side 27 of the Teleskopierzylinders 20. Furthermore, the load side 30 is connected to the pressurized cylinder duct 35. A pilot-operated check valve 22 prevents the unwanted retraction of the locking unit 21.
  • the load-side annular space 30 of the locking unit 21 is connected to the unloaded cylinder duct 35. Furthermore, the load-facing annular space 31 is connected to the pressurized side 27 of the telescoping cylinder 20 and thereby the pilot-operated check valve 22 is opened.
EP09176745.9A 2009-01-27 2009-11-23 Système de verrouillage pour bras de grue télescopique doté d'une unité de verrouillage déplaçable Active EP2210853B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910006292 DE102009006292B4 (de) 2009-01-27 2009-01-27 Verriegelungssystem für Teleskopkranausleger mit verschiebbarer Verriegelungseinheit

Publications (3)

Publication Number Publication Date
EP2210853A2 true EP2210853A2 (fr) 2010-07-28
EP2210853A3 EP2210853A3 (fr) 2011-06-08
EP2210853B1 EP2210853B1 (fr) 2016-01-27

Family

ID=42184070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09176745.9A Active EP2210853B1 (fr) 2009-01-27 2009-11-23 Système de verrouillage pour bras de grue télescopique doté d'une unité de verrouillage déplaçable

Country Status (7)

Country Link
US (1) US9085443B2 (fr)
EP (1) EP2210853B1 (fr)
JP (1) JP5190046B2 (fr)
KR (1) KR101278122B1 (fr)
CN (1) CN101786578B (fr)
CA (1) CA2686361C (fr)
DE (1) DE102009006292B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102602810A (zh) * 2012-03-26 2012-07-25 中联重科股份有限公司 一种伸缩臂架的控制设备、方法、系统及工程机械设备
EP3597584A1 (fr) * 2018-07-20 2020-01-22 Manitowoc Crane Group France SAS Dispositif de verrouillage de flèche télescopique

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102180415B (zh) * 2011-05-19 2013-04-03 三一汽车起重机械有限公司 一种伸缩臂及包括该伸缩臂的工程机械
CN102849631B (zh) * 2011-06-29 2015-12-16 三一汽车起重机械有限公司 一种单缸插销式伸缩臂应急收臂方法及装置
DE102013011173B4 (de) * 2013-07-04 2019-05-23 Liebherr-Werk Ehingen Gmbh Verfahren zur Montage eines Krans sowie Anlenkschuss, Teleskopausleger und Kran
JP6223071B2 (ja) * 2013-08-30 2017-11-01 株式会社タダノ クレーン装置のブーム伸縮機構
KR101715122B1 (ko) * 2015-02-03 2017-03-14 한국생산기술연구원 안전핀이 구비된 크레인 헤드
KR101787370B1 (ko) 2015-02-03 2017-10-20 한국생산기술연구원 사이드 핀이 구비된 크레인 헤드
WO2017189439A1 (fr) 2016-04-25 2017-11-02 Manitowoc Crane Companies, Llc Grue dotée d'un mécanisme de verrouillage rotatif
US11111115B2 (en) 2017-03-02 2021-09-07 Maniitowoc Crane Companies, LLC Wear pad with insert for telescoping boom assembly
WO2019062680A1 (fr) * 2017-09-30 2019-04-04 陈奕松 Dispositif de verrouillage pour flèche télescopique, flèche télescopique, grue, et procédé de verrouillage d'extension/de rétraction de celle-ci
EP3578500B1 (fr) 2018-06-04 2022-07-20 Manitowoc Crane Companies, LLC Flèche télescopique à extension rotative et système de verrouillage
CN113677615B (zh) * 2019-04-04 2024-04-09 株式会社多田野 作业机
CN113896121A (zh) * 2021-10-08 2022-01-07 徐州重型机械有限公司 起重机插销式伸缩系统和起重机
CN116253258B (zh) * 2023-05-12 2023-10-03 四川川运重工机械有限公司 随车起重机吊臂结构以及随车起重机

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US4327533A (en) * 1980-08-13 1982-05-04 Kidde, Inc. Crane boom extending, retracting and cooperative latching arrangement
DE9013210U1 (fr) * 1990-09-18 1991-01-03 Liebherr-Werk Ehingen Gmbh, 7930 Ehingen, De
DE4344795A1 (de) * 1993-12-28 1995-06-29 Liebherr Werk Ehingen Fahrbarer Kran mit einem Teleskopausleger
JP4421685B2 (ja) 1997-02-25 2010-02-24 株式会社タダノ 作業機の制御装置
DE29824453U1 (de) * 1997-05-28 2001-03-01 Mannesmann Ag Kran mit einem Teleskopausleger
DE19824671C2 (de) * 1997-05-28 2002-09-19 Mannesmann Ag Kran mit einem Teleskopausleger
EP1072554B1 (fr) * 1999-07-30 2004-03-17 Liebherr-Werk Ehingen GmbH Grue à flèche téléscopique
DE20003355U1 (de) * 1999-07-30 2000-08-10 Liebherr Werk Ehingen Kran mit einem Teleskopausleger
DE10142847C1 (de) 2001-08-29 2002-11-21 Demag Mobile Cranes Gmbh & Co Teleskopausleger
US6601719B2 (en) * 2001-09-21 2003-08-05 Link-Belt Construction Equipment Co., L.P., Lllp Locking and latching system for a telescoping boom
DE10223449B4 (de) * 2002-05-23 2005-03-24 Terex-Demag Gmbh & Co. Kg Teleskopiersystem mit ankoppelbarer Teleskopiereinrichtung
CN1418805A (zh) * 2002-11-13 2003-05-21 徐州重型机械厂 单伸缩油缸自动控制多节臂伸缩装置
CN2587835Y (zh) * 2002-11-20 2003-11-26 徐州重型机械厂 内部互锁自动伸缩式“u”形起重臂
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102602810A (zh) * 2012-03-26 2012-07-25 中联重科股份有限公司 一种伸缩臂架的控制设备、方法、系统及工程机械设备
EP3597584A1 (fr) * 2018-07-20 2020-01-22 Manitowoc Crane Group France SAS Dispositif de verrouillage de flèche télescopique
US11629034B2 (en) 2018-07-20 2023-04-18 Manitowoc Crane Group France Sas Crane telescope locking device

Also Published As

Publication number Publication date
JP2010173855A (ja) 2010-08-12
CN101786578A (zh) 2010-07-28
EP2210853B1 (fr) 2016-01-27
EP2210853A3 (fr) 2011-06-08
KR101278122B1 (ko) 2013-06-24
CA2686361A1 (fr) 2010-07-27
US9085443B2 (en) 2015-07-21
JP5190046B2 (ja) 2013-04-24
DE102009006292B4 (de) 2015-03-26
US20100187194A1 (en) 2010-07-29
DE102009006292A1 (de) 2010-08-12
CN101786578B (zh) 2014-12-24
CA2686361C (fr) 2014-11-25
KR20100087652A (ko) 2010-08-05

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