EP3319898B1 - Grue à tour - Google Patents

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Publication number
EP3319898B1
EP3319898B1 EP16735995.9A EP16735995A EP3319898B1 EP 3319898 B1 EP3319898 B1 EP 3319898B1 EP 16735995 A EP16735995 A EP 16735995A EP 3319898 B1 EP3319898 B1 EP 3319898B1
Authority
EP
European Patent Office
Prior art keywords
counterweight
counter
counterweights
jib
tower crane
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.)
Active
Application number
EP16735995.9A
Other languages
German (de)
English (en)
Other versions
EP3319898A1 (fr
Inventor
Thomas Herse
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 Biberach GmbH
Original Assignee
Liebherr Werk Biberach 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 Biberach GmbH filed Critical Liebherr Werk Biberach GmbH
Publication of EP3319898A1 publication Critical patent/EP3319898A1/fr
Application granted granted Critical
Publication of EP3319898B1 publication Critical patent/EP3319898B1/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
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • 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
    • B66C23/16—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 with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements

Definitions

  • the invention relates to a tower crane with a crane tower and a boom and counter boom mounted thereon.
  • the ballasting of the counter jib on tower cranes, especially revolving tower cranes, is well known.
  • the counterweights for a trolley jib are usually suspended vertically in an opening provided for this purpose.
  • the counterweights only carry their own weight and transfer this to the steel structure of the counter jib. In order to install the counterweights safely, they must be accessible from both sides.
  • the opening mentioned is formed, for example, by a rectangular recess in the steel construction of the counter boom.
  • the placement of the counter elements within this opening means that they are completely framed by the steel construction of the counter boom.
  • the disadvantage of the known construction with fixed ballast suspension points is the lack of flexibility in the installation of different ballast elements or an existing Limitations on the number of ballast elements that can be used. This makes it difficult to adjust the ballasting to the boom length.
  • the frame-like ballast support always leads to a constant counter jib length, which is defined by the steel construction itself. This limitation is particularly disadvantageous with short jib lengths, since a shortening of the counter jib would also be desirable here. Shorter jib lengths of the counter jib mean advantages when not in use "turning into the wind”. In addition, a short counter jib length would also be advantageous when transporting cranes, especially when transporting containers.
  • the JP-H11 165985 A discloses a counterweight which comprises a bracket with which it is mounted on another counterweight, wherein the counterweight is attached to the other counterweights and the vehicle frame by means of a tension connection.
  • the JP H03 18089 U shows a counterweight that can be supported by means of a bracket on a corresponding bearing point of the crane.
  • the counterweight also has connecting means in the form of a strap to create a tensile connection between the counterweight and the crane.
  • the present invention aims to provide a suitable solution for a flexible counter boom with configurable length.
  • a tower crane is proposed in which, among other things, the length of the counter jib is defined by the number of counterweights accommodated.
  • the counterweights are no longer suspended in an opening provided for this purpose, but at least one counterweight is attached to the free end of the counter jib. All other counterweights are preferably attached directly or indirectly to this first counterweight.
  • the resulting length of the ballasted counter jib is determined by the number of attached counterweights.
  • the boom used can be a trolley boom with counter boom.
  • Short boom lengths require a reduced number of counterweights, which means that the counter boom length can also be reduced.
  • a short counter boom length is particularly advantageous when "turning into the wind" when the crane is not in operation or in confined construction site conditions.
  • long boom lengths a long counter boom length is also achieved due to the large number of counterweights required, which is advantageous for the economic dimensioning of the slewing gear, as it results in a more even load on the slewing ring.
  • This flexible arrangement of the counterweights also opens up new possibilities in the design and dimensioning of the individual ballast elements themselves. For example, different ballast element sizes can be used in this context to achieve greater flexibility in adjusting the boom length. By designing individual counterweights in a certain way, the resulting wind area of the ballasted counter boom can be deliberately varied, and in particular enlarged.
  • only one counterweight is directly connected or can be connected to the steel structure of the counter boom. All other counterballast elements are mounted on this counterweight, preferably suspended from it. Accordingly, all other ballast elements are self-supporting, i.e. they are only connected to each other and not to the steel structure of the boom.
  • the first counterweight mounted directly on the steel structure therefore not only carries its own weight, but also the sum of the other counterweights.
  • the counterweights are stacked or suspended one behind the other in the counter boom direction, in particular they are suspended one behind the other in a vertical installation position.
  • the individual counterweights can be attached to one another or the first counterweight can be attached to the crane itself by means of at least one cantilevered bracket, in particular in the form of a lug, on the ballast element.
  • the bracket or lug protrudes from a surface of the counterweight that is transverse to the longitudinal axis of the boom in the direction of the counter boom and is used to support the counterweight on a suitable bearing point of the steel structure or a counterweight in front, preferably on a horizontal support surface.
  • the counterweights are placed from above on the front ballast element or the crane structure via this bracket or lug.
  • the tension protection is provided by a suitable connecting means, preferably by at least one tension strap or at least one rigid hook.
  • a corresponding fastening rod which runs transversely to the boom direction, in particular in the horizontal direction, serves as a counter element for the tension protection.
  • the bearing point of the counterweights is formed by a depression in the upper side of the elements, with the horizontal bottom surface of the depression serving as the bearing point in a particularly preferred manner.
  • the bracket(s) or lug(s) of the ballast element located behind it can be placed from above onto the bottom surface of the depression.
  • the recess extends through the entire top of the counterweight in the counter boom direction.
  • the recesses are aligned one behind the other, which advantageously creates a continuous channel on the top of the ballast elements.
  • This channel can ideally be used as a walkway, making the ballast elements easily accessible for assembly purposes.
  • the fastening rods for the tension connections can also be used as railings for the walkway.
  • the new design of the counter jib does not require fixed fixing points for most of the ballast elements and therefore offers more design freedom with regard to the shape and dimensioning of the counterweights.
  • the counterweights can all be identical or at least some of the counterweights can have different shapes.
  • Counterweights with variable thickness or strength offer greater flexibility when it comes to ballasting.
  • the variable shape can also influence the resulting wind attack area of the counter jib.
  • the wind attack area can be artificially increased by using very thick counterweights.
  • one or more counterweights can be at least partially enclosed with a steel frame.
  • the steel frame not only fulfills a load-bearing function, but also serves as protection during transport or assembly. It is also conceivable that the steel frame serves as permanent formwork during the manufacture of the counterweights.
  • the invention also relates to a single counterweight for ballasting a counter jib of a tower crane according to the present invention.
  • the counterweight comprises at least one cantilevered bracket, in particular in the form of at least one lug, in order to support the counterweight on a horizontal bearing point.
  • at least one connecting means is provided for establishing a tensile connection.
  • the connecting means is designed in the form of a lug or a rigid hook.
  • the counterweight can comprise a suitable counter element for receiving the lug or the rigid hook of an adjacent counterweight, preferably in the form of a fastening rod.
  • the counterweight has a bearing point for supporting the cantilevered brackets of an adjacent counterweight.
  • the bearing point is formed by a depression in the top of the ballast, whereby this depression preferably extends continuously on the surface through the counterweight in the assembly position in the direction of the boom.
  • the ballast element is equipped with a frame-like enclosure, which is preferably made of steel.
  • the frame construction can have a load-bearing function as well as a protective function against any transport or assembly damage. At the same time, this frame construction can also serve as permanent formwork when producing the counterweight.
  • the counterweight can also be designed without a lug if the other components, such as the hook, etc. are designed accordingly.
  • the inventive idea of the present application is that the counterweights (counterweights) for moment compensation of the tower crane are designed to be self-supporting for the maximum possible counterweight ballasting.
  • the number of ballasted counterweights 10, 11 allows the length of the counter jib 100 to be optimally adapted to the equipped boom length of the tower crane.
  • short boom lengths receive a short counter jib due to the small number of counterweights 10, 11 required, which is advantageous for the out-of-service state, especially with regard to the "turning into the wind" function, as well as in confined construction site conditions.
  • Long boom lengths have a long counter boom length due to the high number of counterweights required, which is advantageous for the economical dimensioning of the slewing gear.
  • the Figure 1 shows the counterweight 10, 11 according to the invention in a rear view. In this vertical installation position, it is mounted from behind to the steel structure or a front counterweight.
  • the first 10 and all other counterweights 11 are identical according to Figure 1
  • the counterweights 10, 11 have a hexagonal basic shape. Of course, the counterweights can also have any other basic shape within the scope of the invention.
  • Two lugs 30 and two pull tabs 20 are available as fastening means for mounting on the steel structure or a front counterweight 10, 11 (see Figure 2 ). In the vertical position of the elements 10, 11 shown, the two lugs 30 preferably protrude parallel to one another on the left and right sides in the upper third of the front. Similarly, two pull tabs 20 extend parallel to one another, each perpendicular to the base, to the front, with one pull tab 20 mounted on the right and left side near the upper edge. In addition, the pull tabs 20 are pivotally connected to the counterweight 10, 11.
  • each counterweight 10, 11 also includes a suitable bearing point so that the lugs 30 can be placed from above on the horizontal bearing surface.
  • This bearing surface is formed by a continuous recess 13 in the upper side 12, as is shown for example in Figure 1
  • the recess is continuous in the longitudinal direction, whereby the upper side 12 forms a rectangular channel running in the longitudinal direction of the boom, the horizontal bottom surface of which serves as a bearing point for receiving the lugs 30.
  • the lugs of the counterweight 11 located behind them are marked with the reference symbol 30'.
  • a fastening rod 21 runs along the upper edge of the recess 13, transverse to the direction of the boom. The pull tabs 20' of the adjacent counterweights 11 can be hooked onto this fastening rod 21.
  • a particular advantage of this arrangement is that there are no predetermined fixed points for the different counterweights 11 on the steel structure of the counter boom 100.
  • the counterweights 10, 11 have different basic shapes, but in particular differ in terms of their thickness, i.e. the thickness in the boom direction. This allows a particularly flexible configuration of the counterweight.
  • the rearmost counterweight 11 is particularly long in order to deliberately increase the resulting wind attack area of the counter boom 100.
  • the counterweights 10, 11 can also be used across crane types, since the fixed point to the steel structure 100 can be standardized.
  • the multiple use is advantageous for flexible use within rental pools and creates economies of scale in production.
  • a fixed horizontal safety hook 23 can also be used according to Figure 3 be used.
  • the counterweights 10, 11 can be designed with a supporting steel frame 14 that runs around the circumference of the counterweight 10, 11. Only the top 12 is left out.
  • the steel frame 14 not only fulfills a supporting function but also serves to protect against transport and assembly damage.
  • the steel frame can already serve as permanent formwork during the manufacture of the counterweights 10, 11.

Landscapes

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

Claims (11)

  1. Grue à tour avec une tour de grue et une flèche montée sur celle-ci ainsi qu'une contre-flèche (100),
    la longueur de la contre-flèche (100) étant définie par le nombre de contrepoids (10, 11) reçus,
    caractérisée en ce que
    au moins un contrepoids (10, 11) comprend au moins une console en porte-à-faux, notamment sous la forme d'au moins un taquet (30), afin de supporter le contrepoids (11) sur un point de support correspondant de la construction en acier de la contre-flèche (100) ou d'un autre contrepoids (10, 11), et dans lequel l'au moins un contrepoids (11) comprend en outre au moins un moyen de liaison, notamment au moins une patte (20) ou au moins un crochet rigide, pour établir une liaison de traction avec la construction en acier ou l'autre contrepoids (10, 11), et
    au moins une tige de fixation est prévue sur la construction en acier ou l'autre contrepoids (11) en tant que contre-élément pour l'au moins un moyen de liaison sous la forme d'une tige (21, 101) s'étendant transversalement à la direction de la flèche.
  2. Grue à tour selon la revendication 1, caractérisée en ce qu'un premier contrepoids (10) est monté ou peut être monté à l'extrémité libre de la construction en acier de la contre-flèche (100), notamment peut être accroché à celle-ci, et tous les autres contrepoids (11) sont reliés ou peuvent être reliés directement au premier contrepoids (10) ou entre eux.
  3. Grue à tour selon la revendication 2, caractérisée en ce qu'au moins deux éléments de contre-lest (10, 11) sont montés ou peuvent être montés les uns derrière les autres dans la direction de la contre-flèche.
  4. Grue à tour selon l'une quelconque des revendications précédentes, caractérisée en ce que le point de support d'au moins un contrepoids est formé par un renfoncement (13) du côté supérieur du lest (12), le renfoncement (13) s'étendant de préférence en continu à travers le contrepoids (10, 11) dans la direction de la flèche.
  5. Grue à tour selon la revendication 4, caractérisée en ce que, dans le cas d'un agencement de plusieurs contrepoids (10, 11) les uns derrière les autres, une passerelle continue est formée par les renfoncements (13).
  6. Grue à tour selon l'une quelconque des revendications précédentes, caractérisée en ce que les contrepoids (10, 11) sont identiques ou en ce qu'au moins une partie des contrepoids est de conception différente, ceux-ci se distinguant notamment par leur épaisseur et/ou leur circonférence et/ou leur forme de base et/ou le type de matériau utilisé.
  7. Grue à tour selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un des contrepoids (10, 11) est au moins partiellement entouré d'un cadre en acier (14).
  8. Contrepoids pour le lestage d'une contre-flèche (100) d'une grue à tour, notamment d'une grue à tour selon l'une quelconque des revendications 1 à 7, dans lequel le contrepoids (10, 11) comprend au moins une console en porte-à-faux, notamment sous la forme d'au moins un taquet (30), afin de supporter le contrepoids sur un point de support horizontal, caractérisé en ce que le contrepoids prévoit au moins un moyen de liaison sous la forme d'au moins une patte (20) ou d'au moins un crochet rigide pour établir une liaison de traction avec un contre-élément adapté, de préférence une tige de fixation (21, 101),
    le contrepoids (10, 11) comprend un point de support pour le support de la console en porte-à-faux d'un autre contrepoids, et
    le point de support est formé par un renfoncement (13) sur le côté supérieur du lest (12) et le renfoncement s'étend de préférence dans la position de montage dans la direction de la flèche en continu sur le côté supérieur à travers le contrepoids.
  9. Contrepoids selon la revendication 8 précédente, caractérisé en ce qu'il est prévu une enceinte (14) de type cadre de la circonférence de l'élément de lest, de préférence une enceinte de type cadre en acier.
  10. Contrepoids selon l'une quelconque des revendications 8 ou 9, caractérisé en ce que le cadre en acier (14) est conçu de manière à pouvoir également exercer un effet porteur.
  11. Contrepoids selon l'une quelconque des revendications 8 à 10 précédentes, caractérisé en ce que le contrepoids (10, 11) est réalisé sans taquet (30).
EP16735995.9A 2015-07-06 2016-07-06 Grue à tour Active EP3319898B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015008771.1A DE102015008771A1 (de) 2015-07-06 2015-07-06 Turmkran
PCT/EP2016/001162 WO2017005365A1 (fr) 2015-07-06 2016-07-06 Grue à tour

Publications (2)

Publication Number Publication Date
EP3319898A1 EP3319898A1 (fr) 2018-05-16
EP3319898B1 true EP3319898B1 (fr) 2024-06-19

Family

ID=56368923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16735995.9A Active EP3319898B1 (fr) 2015-07-06 2016-07-06 Grue à tour

Country Status (5)

Country Link
US (1) US10843908B2 (fr)
EP (1) EP3319898B1 (fr)
CN (1) CN108025897B (fr)
DE (1) DE102015008771A1 (fr)
WO (1) WO2017005365A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10850952B2 (en) * 2017-07-21 2020-12-01 Brandt Industries Canada Ltd. Pipelayer with quick attach counterweights
CN110077970A (zh) * 2019-05-06 2019-08-02 徐工集团工程机械股份有限公司建设机械分公司 一种组合平衡重结构及其履带式起重机
US12459791B2 (en) 2023-06-09 2025-11-04 Caterpillar Inc. Lifting eyes for counterweights

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003785A (en) * 1958-10-20 1961-10-10 Deere & Co Weights and weight-mounting means for tractors and the like
US3032352A (en) * 1958-11-03 1962-05-01 Int Harvester Co Tractor vehicle weighting means
DE1680702C3 (de) * 1966-03-09 1975-06-19 Xaver Fendt & Co, 8952 Marktoberdorf Zusatzgewicht zur Belastung einer Achse eines Fahrzeuges, insbesondere eines landwirtschaftlich nutzbaren Fahrzeuges
US4344716A (en) * 1980-12-08 1982-08-17 Fmc Corporation Beam joining apparatus
JPH0318089A (ja) * 1989-06-15 1991-01-25 Tdk Corp 抵抗体ペースト、厚膜抵抗体層、配線基板および配線基板の製造方法
JPH0318089U (fr) 1989-07-04 1991-02-22
JP3245709B2 (ja) 1997-12-02 2002-01-15 日本車輌製造株式会社 建設機械
ITMI20031503A1 (it) 2003-07-22 2005-01-23 San Marco Internat S R L Gru a torre con braccio e controbraccio senza tiranti di sostegno
JP2006062789A (ja) 2004-08-25 2006-03-09 Kobelco Cranes Co Ltd クレーンのカウンタウェイト自力着脱装置
ITTO20040695A1 (it) * 2004-10-08 2005-01-08 Gru Dalbe Srl Deflettore frangivento per gru e gru utilizzante detto deflettore
FR2899217B1 (fr) * 2006-03-30 2008-09-12 Potain Soc Par Actions Simplif "ensemble constitue d'une contre-fleche et de son lest, pour grue a tour"
CN201071272Y (zh) * 2007-06-23 2008-06-11 徐州重型机械有限公司 自顶式平衡重安装装置
CN201553565U (zh) * 2009-05-08 2010-08-18 哈尔滨东建机械制造有限公司 低温塔式起重机
KR20120042115A (ko) 2010-10-22 2012-05-03 박정원 타워 크레인
US20120153605A1 (en) * 2010-12-20 2012-06-21 Caterpillar Inc. Counterweight system
DE102011118926B3 (de) 2011-11-21 2013-05-16 Wolffkran Holding Ag Gegengewichtsfixierung
CN104030175A (zh) 2014-05-12 2014-09-10 江苏大通重工有限公司 小型塔式起重机械斜后拉杆连接装置
CN104444860B (zh) * 2014-12-11 2016-10-05 徐州重型机械有限公司 一种挂接装置、平衡重装置和挂接方法

Also Published As

Publication number Publication date
EP3319898A1 (fr) 2018-05-16
CN108025897B (zh) 2020-09-29
US10843908B2 (en) 2020-11-24
WO2017005365A1 (fr) 2017-01-12
CN108025897A (zh) 2018-05-11
US20180273353A1 (en) 2018-09-27
DE102015008771A1 (de) 2017-01-12

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