EP1321425A1 - Flèche télescopique pour grue mobile - Google Patents

Flèche télescopique pour grue mobile Download PDF

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Publication number
EP1321425A1
EP1321425A1 EP02026316A EP02026316A EP1321425A1 EP 1321425 A1 EP1321425 A1 EP 1321425A1 EP 02026316 A EP02026316 A EP 02026316A EP 02026316 A EP02026316 A EP 02026316A EP 1321425 A1 EP1321425 A1 EP 1321425A1
Authority
EP
European Patent Office
Prior art keywords
profile part
telescopic boom
curved
shell segments
telescopic
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
EP02026316A
Other languages
German (de)
English (en)
Other versions
EP1321425B1 (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 mobile crane in the preamble of Claim 1 specified genus.
  • Such telescopic booms lead to a load at their front end Lifting work out.
  • the boom is subjected to a bending load in the two main axes exposed; There is tension at the top of the boom, while at the bottom of the boom compressive stresses occur. Through side forces and off-center loads there is also a horizontal bend and torsion.
  • a telescopic boom as described in the introduction, is for example from EP 0 499 208 B1 known.
  • the cross section of this telescopic boom consists of an upper one Profile part, which has a semi-box-shaped design, and one with its free Legs welded lower profile part, which is completely round as a half-shell.
  • Such completely round lower profile parts have good load introduction and Stability properties, however, are not sufficient for rectangular trusses in terms of rigidity approach. It is often necessary to add additional elements that promote stability, such as welded dent strips, to install or to make the cross section a little thicker what has a negative impact on the total weight of the boom.
  • a boom profile for cranes and crane vehicles is known from EP 0 668 238 A1, at which the two upper leg sections of the lower profile, which with the legs of the upper profile are welded as straight strips are formed.
  • the rest of the bottom Profile part has a curved shell shape.
  • This straight strips of strip form kinks in the profile cross-section at their edges. Due to these kinks, the load properties of such a profile approach back to those with a rectangular framework; the rigidity can be increased.
  • the disadvantage of such profile designs is that in particular by used straight strips the load sharing and stability properties that for curved profiles are particularly advantageous, get worse. Again additional stiffeners or thicker material thicknesses required, which is the total weight of the Outrigger disadvantageously increased.
  • German utility model no. 94 02 692 describes a cantilever profile with an im essential semi-box-shaped upper section and one with the upper section connected rounded section, in which the lower section at least one flat Has wall section. This design is intended to try both sufficient buckling stiffness as well as sufficient load resistance against bending manufacture. So there is a flat plate segment (wall section) in the lower Profile cross section used.
  • a telescopic boom emerges, 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 half-box-shaped part, the opposing legs are welded together.
  • the upper profile part has the Shape of an isosceles trapezoid without a longer base line in such a way that the Legs of the profile parts meet to form an angle on the Inside of the profile is smaller than 180 °. This should achieve an even better dent resistance become. To do this, however, the lower profile part must be well above the center of gravity of a shot reach up. A neutral zone has an increase in material weight-optimized boom is not an advantage.
  • DE 196 24 312 C2 describes a telescopic boom for a mobile crane specified in the preamble of claim 1 genus, in which the upper profile part is semi-box-shaped and the lower profile part consists of several, adjoining Shell segments, each of which has an outwardly curved shape, in particular have a circular arc shape. This should make the good load introduction and Stability properties of curved profiles with the higher rigidity of a Rectangular framework are combined, so that such a telescopic boom is particularly easy can be built.
  • the invention has for its object a telescopic boom of the type specified to create, in which the disadvantages mentioned above do not occur.
  • a Telescopic boom are proposed, which has an even greater buckling stiffness and therefore especially for extreme loads such as in luffing jib operation, with guyed Systems or when the boom is steep.
  • the advantages achieved with the invention are based on the fact that the upper profile part of the Base part and / or at least one telescopic part by several, at obtuse angles abutting shell segments is formed, which has an outwardly curved shape to have.
  • the kinks act between the individual ones that are curved outwards Shell segments such as idealized buckling stiffeners. This is for the luffing tip operation, however, too in the case of pre-tensioned and / or tensioned boom systems ("Mega-Lift") of great size Advantage, since both the upper profile part and the lower profile part are now under pressure can be. Because - unlike the telescopic booms according to the prior art - the entire cross-section of the upper shell increases with the profile of the telescopic boom according to the invention the rigidity while minimizing the weight.
  • the shape of the upper profile part is larger Discharge surfaces provided in the upper shell, which are the forces exerted by the subsequent inner telescopic part on the upper shell of the outer telescopic part or Base part act, can absorb.
  • the upper profile part of the telescopic boom according to the present invention consists of at least two curved shell segments.
  • the number of to use Shell segments depend on the one hand on the desired shape of the boom and on the other hand depending on the load cases that occur.
  • the upper and the lower profile part run on them Leg ends in a straight shape so that they are adjacent to each other, straight Leg ends can be welded together. This results in an optimal one Force transmission from the upper profile part to the lower profile part and vice versa depending on the type of load.
  • the base part and / or at least one shot of a Telescopic boom remains the weld joint between the lower profile part and the upper Profile part in the area of the neutral zone, since the curved, with obtuse angles abutting shell segments in the entire upper profile part a higher level the bending stiffness.
  • the upper profile part with its lower sheet thickness can accordingly lower to the lower profile parts, that is, it is now possible the weld joint between the upper profile part and lower profile part in the area of neutral zone.
  • a twisting of the telescope parts with each other as a result of torsion is in the Cross-sectional shape according to the invention with preferably four or six kinks in the Upper part and the lower part greatly reduced.
  • An upper profile part with a cross section of several, outwardly curved Shell segments are advantageous if compressive forces are exerted on the upper ones during guy operation Profile part act. With predominant bending stress around both main axes According to a preferred embodiment, tensile forces in the upper profile part are provided, that in the upper profile part the outwardly curved shell segments of one, two or several straight segments can be interrupted. This will make it more even Stress distribution reached and an ovalization of the cross section below Bending stress around the main axis is reduced.
  • a continuously curved, upper profile part in the area of the Force transmission especially when the following telescopic part is supported by the foot piece, as a whole be supported by sliders.
  • the sliders at this point are omitted.
  • Such sliders are in the area with obtuse angles adjacent to each other, curved shell segments.
  • the Slider lengths in the direction of the boom axis can be varied by varying the width of the straight segment can be optimized so that with the same length when inserted a larger boom length is possible.
  • the figures show a cross section through part of a telescopic boom, whereby it is around the rotating and swiveling base part or around an extendable telescopic part can act.
  • Telescopic boom i.e. either a base part or at least one telescopic part
  • Telescopic boom i.e. either a base part or at least one telescopic part
  • the free leg ends of the Both profile parts 12, 14 end in a straight shape 12a, 14a and are at the ends these straight regions 12a, 14a are welded together.
  • the respective welding shocks are indicated by reference numeral 16. They are in the neutral zone of the base part or telescopic part, i.e. the upper profile part 12 and the lower profile part 14 have approximately that same vertical height.
  • the lower profile part is - similar to the telescopic boom according to the DE 196 24 312 C2 - formed by three outwardly curved shell segments 14b, 14c, 14d, which each have the shape of a circular arc, but with different circular radii.
  • the upper profile part 12 consists of three outwardly curved Shell segments 12b, 12c, 12d, which are also circular arcs, each with a different shape Have circular radii.
  • the two lower shell segments 12b, 12d run into the straight parts 12a, which with the straight parts 14a of the lower profile part 14 are welded.
  • all the shell segments 12b, 14b, 12c, 14c and 12d, 14d form obtuse angles with each other or with the subsequent straight parts 12a. This also applies to the lower ones Shell segments 14a, 14b, 14c and 14d.
  • FIG. 2 shows the cross-sectional shape of a somewhat modified embodiment of a Base part and / or at least one profile part, which differ from the cross-sectional shape according to the figure 1 only differs in that in the upper profile part 12 a straight shell segment 12e is inserted.
  • This straight shell segment 12e replaces part of the upper segment 12c in the embodiment according to FIG. 1 and runs both in the representation according to FIG. 2 as well as horizontally when using such a telescopic boom.
  • the straight segment 12e are each followed by a short segment 12f or 12g, which in turn - similar to in the embodiment according to FIG. 1 - merge into the lateral elements 12b, 12d.
  • the number of curved shell segments in the upper profile part 12 is also not as in The embodiments shown, limited to three, but it can also be two, four or five outwardly curved shell segments can be used.
  • Figure 3 shows a variant of the cross-sectional shape of Figure 2, in which in the right and left upper corner of the upper profile part 12 each have a more outward curve Shell segment 12g ', 12f' is provided, which is tangential to the central straight Shell segment 12e on one side and in a less curved outward Shell segment 12b ', 12d' merges on the other side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
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 true EP1321425A1 (fr) 2003-06-25
EP1321425B1 EP1321425B1 (fr) 2006-12-20

Family

ID=7965065

Family Applications (2)

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

Family Applications Before (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) EP1496006A3 (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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1741663A1 (fr) 2005-07-07 2007-01-10 Grove U.S. LLC section de poutre supérieure pour grues télescopiques

Families Citing this family (12)

* 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
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
KR101543047B1 (ko) * 2007-09-05 2015-08-10 팔핑게르 에이지 크레인용 크레인 붐, 크레인용 집 시스템, 크레인, 및 다용도 차량
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0499208A2 (fr) * 1991-02-11 1992-08-19 LIEBHERR-WERK EHINGEN GmbH Flèche télescopique pour grues mobiles ou analogue
DE4344795A1 (de) * 1993-12-28 1995-06-29 Liebherr Werk Ehingen Fahrbarer Kran mit einem Teleskopausleger
EP0668238A1 (fr) * 1994-02-18 1995-08-23 EC Engineering + Consulting Spezialmaschinen GmbH Profil de flèche
DE19624312A1 (de) * 1996-06-18 1998-01-08 Kidde Ind Inc Teleskopausleger für Fahrzeugkrane
DE20004016U1 (de) * 2000-03-03 2001-07-12 Liebherr-Werk Ehingen Gmbh, 89584 Ehingen Teleskopausleger für Krane, vorzugsweise Fahrzeugkrane

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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
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
DE19741202C5 (de) * 1997-09-18 2005-04-07 Grove U.S. LLC (n.d.Ges.d.Staates Delaware) Gleitlager für Teleskopteile
JP2000143163A (ja) * 1998-11-16 2000-05-23 Yutani Heavy Ind Ltd 作業機の伸縮ブーム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0499208A2 (fr) * 1991-02-11 1992-08-19 LIEBHERR-WERK EHINGEN GmbH Flèche télescopique pour grues mobiles ou analogue
DE4344795A1 (de) * 1993-12-28 1995-06-29 Liebherr Werk Ehingen Fahrbarer Kran mit einem Teleskopausleger
EP0668238A1 (fr) * 1994-02-18 1995-08-23 EC Engineering + Consulting Spezialmaschinen GmbH Profil de flèche
DE19624312A1 (de) * 1996-06-18 1998-01-08 Kidde Ind Inc Teleskopausleger für Fahrzeugkrane
DE20004016U1 (de) * 2000-03-03 2001-07-12 Liebherr-Werk Ehingen Gmbh, 89584 Ehingen Teleskopausleger für Krane, vorzugsweise Fahrzeugkrane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1741663A1 (fr) 2005-07-07 2007-01-10 Grove U.S. LLC section de poutre supérieure pour grues télescopiques

Also Published As

Publication number Publication date
CA2413969A1 (fr) 2003-06-12
CN1436716A (zh) 2003-08-20
JP2003201088A (ja) 2003-07-15
KR100893929B1 (ko) 2009-04-21
US6978907B2 (en) 2005-12-27
DE50209002D1 (de) 2007-02-01
CA2413969C (fr) 2009-02-24
KR20030048361A (ko) 2003-06-19
ES2273961T3 (es) 2007-05-16
EP1321425B1 (fr) 2006-12-20
DE20120121U1 (de) 2002-03-07
CN1319846C (zh) 2007-06-06
EP1496006A3 (fr) 2005-02-02
US20030106871A1 (en) 2003-06-12
EP1496006A2 (fr) 2005-01-12

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