EP1321425B1 - Flèche télescopique pour grue mobile - Google Patents

Flèche télescopique pour grue mobile Download PDF

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Publication number
EP1321425B1
EP1321425B1 EP02026316A EP02026316A EP1321425B1 EP 1321425 B1 EP1321425 B1 EP 1321425B1 EP 02026316 A EP02026316 A EP 02026316A EP 02026316 A EP02026316 A EP 02026316A EP 1321425 B1 EP1321425 B1 EP 1321425B1
Authority
EP
European Patent Office
Prior art keywords
profile part
telescopic
shell segments
upper profile
segment
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 - Lifetime
Application number
EP02026316A
Other languages
German (de)
English (en)
Other versions
EP1321425A1 (fr
Inventor
Franz Paschke
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
Grove US LLC
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 Grove US LLC filed Critical Grove US LLC
Priority to EP04024391A priority Critical patent/EP1496006A3/fr
Publication of EP1321425A1 publication Critical patent/EP1321425A1/fr
Application granted granted Critical
Publication of EP1321425B1 publication Critical patent/EP1321425B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a telescopic boom for a vehicle crane of the type specified in the preamble of claim 1.
  • Such telescopic boom perform in the loaded state at its front end a lifting work.
  • the boom is exposed to a bending load in the two main axes; There is tension at the top of the boom, while compressive stresses occur at the bottom of the boom.
  • lateral forces and off-center loads also occur a horizontal bending and torsions.
  • Such a cross-section can be built most easily if everywhere the maximum stresses are equal and close to the allowable stress. In the event that equally large forces occur from different directions, these requirements are met for example in thin-walled circular tubes or in a square truss. For example, if a cross-section is more highly loaded in the vertical direction than in the horizontal, an optimal round cross-section becomes an ellipse and an optimal square cross-section becomes a rectangular framework, in both cases the cross-sections are higher than they are wide.
  • a telescopic boom as described in the introduction, is known, for example, from EP 0 499 208 B1.
  • the cross section of this telescopic boom consists of an upper profile part, which has a semi-box-shaped configuration, and one with the free Legs welded lower profile part, which is designed completely round as half shell.
  • completely round bottom profile parts have good load initiation and stability properties, they are not sufficient in terms of rigidity on rectangular trusses zoom. It is often necessary to incorporate additional stability-enhancing elements, such as welded-in Beulst Shape, or make the cross-section a little thicker, which adversely affects the overall weight of the boom.
  • German utility model no. 94 02 692 describes a boom profile with a substantially semi-box-shaped upper portion and a rounded portion connected to the upper portion, wherein the lower portion has at least one flat wall portion. With this design is to be attempted to produce both a sufficient buckling rigidity and a sufficient load resistance to bending. Thus, a flat plate segment (wall section) is inserted into the lower profile cross section.
  • the lower part consists of new flat strips which are arranged at an obtuse angle to each other. These strips form the plate segments of the lower profile part. They are all formed as a flat plate segments, which in turn have the disadvantages with respect to the buckling stiffness.
  • a telescopic boom out in which the articulation piece and / or at least one telescopic section consists of profiles, each of which has a lower round and an upper semi-box-shaped part whose oppositely directed legs are welded together.
  • the upper profile part has the shape of an isosceles trapezium without a longer baseline in such a way that the legs of the profile parts abut each other to form an angle which is smaller than 180 ° on the profile inner sides. This should give an even better dent resistance.
  • the lower profile part must reach far above the center of gravity of a shot upwards.
  • increasing the material of a neutral zone is not an advantage for a weight-optimized boom.
  • a telescopic boom for a vehicle crane of the type specified in the preamble of claim 1 in which the upper profile part is semi-box-shaped and the lower profile part of several, adjacent shell segments consists, each having an outwardly curved shape , in particular a circular arc shape, have.
  • a telescopic boom according to the preamble of claim 1 is known from US 6,108,985.
  • the invention has for its object to provide a telescopic boom of the type specified, in which the above-mentioned disadvantages do not occur.
  • a telescopic boom is to be proposed, which has an even further Beulsteifmaschine and is therefore particularly suitable for extreme loads such as in Wippspitzen compassion, with guyed systems or steep boom position.
  • the advantages achieved by the invention are based inter alia on the fact that the upper profile part of the base part and / or at least one telescopic part has a plurality of shell segments abutting one another at obtuse angles, which have an outwardly curved shape.
  • the kinks between the individual, outwardly curved shell segments act like idealized stiffeners. This is for the Wippspitzen plante, but also in prestressed and / or guyed cantilever systems ("Mega-Lift") of great advantage, since now both the upper profile part and the lower profile part can be loaded on pressure. Since - unlike the telescopic arms of the prior art - carries the entire upper shell cross section, increases in the profile of the telescopic boom according to the invention, the rigidity while minimizing the weight.
  • the upper and the lower profile part run at their leg ends in a straight shape, so that they can be welded together at their adjoining, straight leg ends. This results in an optimum introduction of force from the upper profile part to the lower profile part and vice versa depending on the type of load.
  • the base part according to the invention and / or at least one shot of a telescopic boom welding remains between the lower profile part and the upper profile part in the region of the neutral zone, since the curved, with obtuse angles abutting shell segments in the entire upper profile part a higher level of Cause bending stiffness.
  • the upper profile part with its lower sheet thickness can be correspondingly placed lower on the lower profile parts, that is, it is now possible to provide the weld between the upper profile part and the lower profile part in the region of the neutral zone.
  • a twisting of the telescope parts with each other as a result of torsion is greatly reduced in the cross-sectional shape according to the invention with preferably four or six folds in the upper part and the lower part.
  • An upper profile part with a cross section having a plurality of outwardly curved shell segments is advantageous when pressure acting on clamping forces on the upper profile part.
  • the outwardly curved shell segments are interrupted by a straight segment.
  • a total of sliders must be supported.
  • the sliders can be omitted at this point.
  • Such sliders are in the range of blunt angles contiguous, curved shell segments.
  • the slider lengths in the direction of the boom axis can be optimized by varying the width of the straight segment, so that a larger boom length is possible with the same length in the inserted state.
  • the figures show a cross section through a part of a telescopic boom, which may be the rotatable and pivotally mounted base part or an extendable telescope part.
  • telescoping and extendable telescopic parts on the one hand and the rotatable and pivotally mounted base part on the other hand have the illustrated cross-sectional shape.
  • the telescopic parts with very small distances from each other in the base part can be boxed, because for the reasons explained above on stiffening agents, such as welded Beulsteifen, waived and thin wall thicknesses can be used. This creates a stable, lightweight telescopic boom.
  • Figure 1 generally indicated by the reference numeral 10 part of a telescopic boom, so either base or at least one telescopic part, consists of an upper profile part 12 and a lower profile part 14.
  • the free leg ends of the two profile parts 12, 14 run in a straight shape 12a, 14a and are welded together at the ends of these straight portions 12a, 14a.
  • the respective welding joints are indicated by the reference numeral 16. They are in the neutral zone of the base part or telescopic part, that is, the upper profile part 12 and the lower profile part 14 have approximately the same vertical height. This embodiment is not claimed and therefore does not belong to the invention.
  • the lower profile part is - in a similar manner as in the telescopic boom according to DE 196 24 312 C2 - formed by three outwardly curved shell segments 14b, 14c, 14d, each having the shape of a circular arc, but with different circular radii have.
  • the upper profile portion 12 consists of three outwardly curved shell segments 12b, 12c, 12d, which also have circular arc shape, each having different circular radii.
  • the two lower shell segments 12b, 12d extend into the straight parts 12a, which are welded to the straight parts 14a of the lower profile part 14.
  • all the shell segments 12b, 14b, 12c, 14c and 12d, 14d form obtuse angles with each other or with the adjoining, straight parts 12a. This also applies to the lower shell segments 14a, 14b, 14c and 14d.
  • FIG. 2 shows the cross-sectional shape of a slightly modified embodiment of a base part and / or at least one profile part that differs from the cross-sectional shape according to FIG. 1 only in that a straight shell segment 12e is inserted into the upper profile part 12.
  • This straight shell segment 12e replaces a part of the upper segment 12c in the embodiment according to FIG. 1 and runs horizontally both in the illustration according to FIG. 2 and in the use of such a telescopic arm.
  • the short segment 12e is adjoined in each case by a short segment 12f or 12g, which in turn - as in the embodiment according to FIG. 1 - merge into the lateral elements 12b, 12d.
  • straight segments can be provided between the outwardly curved shell segments (12b, 12f) and (12g and 12d).
  • the number of curved shell segments in the upper profile part 12 is not limited to three, but two, four, or five outwardly curved shell segments may be used.
  • FIG. 3 shows a variant according to the invention of the cross-sectional shape according to FIG. 2, in which a more outwardly curved shell segment 12g ', 12f' is provided in the right and left upper corner of the upper profile part 12, which tangential into the central straight shell segment 12e on the one side and into a less strongly outwardly curved shell segment 12b ', 12d' on the other side passes.

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

Claims (6)

  1. Flèche télescopique pour grue mobile
    a) comportant un élément de base à charger pouvant tourner et pivoter,
    b) dans laquelle sont montés plusieurs éléments télescopiques coulissants et extensibles,
    c) l'élément de base et/ou au moins un élément télescopique comportant une partie profilée supérieure (12) et une partie profilée inférieure (14) et
    d) la partie profilée inférieure (14) étant constituée de plusieurs segments de coque (14b, 14c, 14d) adjacents les uns aux autres
    e) qui présentent chacun une forme courbée vers l'extérieur,
    f) la partie profilée supérieure (12) comportant plusieurs segments de coque (12b, 12d, 12f, 12g) courbés vers l'extérieur, mis bout à bout suivant des angles obtus,
    caractérisée en ce que
    g) les segments de coque (12b, 12b', 12d, 12d', 12f, 12f', 12g, 12g') courbés sont séparés les uns des autres dans la partie profilée supérieure (12) par au moins un segment droit (12e) central, sur chaque côté, à la suite du segment droit central (12e) étant prévu un segment de coque (12g', 12f') plus fortement courbé vers l'extérieur, qui se prolonge tangentiellement par le segment de coque droit central (12e) sur un côté et par un segment de coque (12b', 12d') moins fortement courbé vers l'extérieur, sur l'autre côté.
  2. Flèche télescopique selon la revendication 1, caractérisée en ce que la partie profilée inférieure (14) et la partie profilée supérieure (12) se terminent, à leurs extrémités de branche, par une forme droite (12a, 14a) et sont soudées entre elles à leurs extrémités de branche (12a, 14a) droites, adjacentes l'une à l'autre.
  3. Flèche télescopique selon la revendication 2, caractérisée en ce que les oints soudés (16) se trouvent dans la région de la zone neutre de l'élément de base et/ou d'au moins un élément télescopique.
  4. Flèche télescopique selon l'une des revendications 1 à 3, caractérisée en ce que les segments de coque (12b', 12f', 12g', 12d' ; 14b', 14c', 14d') sont réalisés au moins en partie en forme d'arc de cercle.
  5. Flèche télescopique selon l'une des revendications 1 à 4, caractérisée en ce qu'au moins certains des segments de coque (12b', 12f', 12g', 12d' ; 14b, 14c, 14d) courbés de la partie profilée supérieure (12) et/ou de la partie profilée inférieure (14) présentent une forme en arc de cercle avec différents rayons.
  6. Flèche télescopique selon l'une des revendications 1 à 5, caractérisée en ce que les segments de coque courbés se prolongent les uns les autres tangentiellement.
EP02026316A 2001-12-12 2002-11-21 Flèche télescopique pour grue mobile Expired - Lifetime EP1321425B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04024391A EP1496006A3 (fr) 2001-12-12 2002-11-21 Flèche télescopique pour grue mobile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20120121U 2001-12-12
DE20120121U DE20120121U1 (de) 2001-12-12 2001-12-12 Teleskopausleger für einen Fahrzeugkran

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP04024391A Division EP1496006A3 (fr) 2001-12-12 2002-11-21 Flèche télescopique pour grue mobile

Publications (2)

Publication Number Publication Date
EP1321425A1 EP1321425A1 (fr) 2003-06-25
EP1321425B1 true EP1321425B1 (fr) 2006-12-20

Family

ID=7965065

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02026316A Expired - Lifetime EP1321425B1 (fr) 2001-12-12 2002-11-21 Flèche télescopique pour grue mobile
EP04024391A Withdrawn EP1496006A3 (fr) 2001-12-12 2002-11-21 Flèche télescopique pour grue mobile

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04024391A Withdrawn EP1496006A3 (fr) 2001-12-12 2002-11-21 Flèche télescopique pour grue mobile

Country Status (8)

Country Link
US (1) US6978907B2 (fr)
EP (2) EP1321425B1 (fr)
JP (1) JP2003201088A (fr)
KR (1) KR100893929B1 (fr)
CN (1) CN1319846C (fr)
CA (1) CA2413969C (fr)
DE (2) DE20120121U1 (fr)
ES (1) ES2273961T3 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10315989B4 (de) 2003-04-08 2007-10-25 Grove U.S. Llc Spannsystem für einen Mobil-Teleskopkran
JP2005112514A (ja) * 2003-10-06 2005-04-28 Tadano Ltd 伸縮ブーム
EP1741663B1 (fr) 2005-07-07 2010-12-01 Grove U.S. LLC Section de poutre supérieure pour grues télescopiques
DE102006014573B3 (de) * 2006-03-29 2007-07-19 Manitowoc Crane Group France SAS, Teleskopkran-Auslegerteil mit schwächer und stärker gekrümmten Querschnittssegmenten im oberen Profilteil und im unteren Profilteil
ES2362387T3 (es) * 2007-09-05 2011-07-04 Palfinger Ag Forma del perfil para un brazo de grúa.
DE102008032976B4 (de) 2007-09-12 2018-02-22 Manitowoc Crane Group France Sas Teleskopkran-Auslegerteil
JP2010176277A (ja) * 2009-01-28 2010-08-12 Sanyo Electric Co Ltd データ転送システム
US9290363B2 (en) 2011-07-21 2016-03-22 Manitowoc Crane Companies, Llc Tailor welded panel beam for construction machine and method of manufacturing
KR101626791B1 (ko) * 2014-09-26 2016-06-02 한국고벨(주) 크레인 거더 및 거더 제작용 지그
DE202016003525U1 (de) * 2016-06-03 2016-06-23 Liebherr-Werk Ehingen Gmbh Teleskopprofil mit variabel verlaufendem Stoß
DE102017208031A1 (de) * 2017-05-12 2018-11-15 Putzmeister Engineering Gmbh Gekröpfter Auslegerarm mit veränderlichem Querschnitt für mobile Betonpumpen
JP7272028B2 (ja) * 2019-03-19 2023-05-12 株式会社タダノ ブームの構造
SI26016B (sl) * 2020-06-19 2024-05-31 Tajfun Liv, Proizvodnja In Razvoj D.O.O. Nosilni sklop teleskopskega kraka pri mobilnem hidravličnem dvigalu in mobilno hidravlično dvigalo, obsegajoče tovrsten sklop

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108985A (en) * 1997-09-18 2000-08-29 Grove, U.S.L.L.C. Slide mount for telescopic parts

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Publication number Priority date Publication date Assignee Title
US3516553A (en) * 1968-09-25 1970-06-23 Tel E Lect Boom construction
JPS62113193A (ja) * 1985-11-13 1987-05-25 株式会社日立製作所 記憶回路
ATE123743T1 (de) * 1991-02-11 1995-06-15 Liebherr Werk Ehingen Teleskopausleger für fahrzeugkrane o.dgl.
JP2580596Y2 (ja) * 1992-03-27 1998-09-10 新明和工業株式会社 多角形断面を有する多段式伸縮ブーム
JP2575542Y2 (ja) * 1993-04-21 1998-07-02 住友建機株式会社 ブーム
DE4344795A1 (de) * 1993-12-28 1995-06-29 Liebherr Werk Ehingen Fahrbarer Kran mit einem Teleskopausleger
DE9402692U1 (de) * 1994-02-18 1994-04-14 Ec Engineering + Consulting Spezialmaschinen Gmbh, 89079 Ulm Auslegerprofil
DE19624312C2 (de) * 1996-06-18 2000-05-31 Grove Us Llc Teleskopausleger für Fahrzeugkrane
JP2000143163A (ja) * 1998-11-16 2000-05-23 Yutani Heavy Ind Ltd 作業機の伸縮ブーム
DE20004016U1 (de) * 2000-03-03 2001-07-12 Liebherr-Werk Ehingen Gmbh, 89584 Ehingen Teleskopausleger für Krane, vorzugsweise Fahrzeugkrane

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108985A (en) * 1997-09-18 2000-08-29 Grove, U.S.L.L.C. Slide mount for telescopic parts

Also Published As

Publication number Publication date
CA2413969A1 (fr) 2003-06-12
EP1321425A1 (fr) 2003-06-25
EP1496006A2 (fr) 2005-01-12
KR20030048361A (ko) 2003-06-19
CA2413969C (fr) 2009-02-24
CN1319846C (zh) 2007-06-06
US20030106871A1 (en) 2003-06-12
DE50209002D1 (de) 2007-02-01
DE20120121U1 (de) 2002-03-07
JP2003201088A (ja) 2003-07-15
EP1496006A3 (fr) 2005-02-02
ES2273961T3 (es) 2007-05-16
KR100893929B1 (ko) 2009-04-21
US6978907B2 (en) 2005-12-27
CN1436716A (zh) 2003-08-20

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