EP1090875B1 - Teleskopsausleger für Krane - Google Patents
Teleskopsausleger für Krane Download PDFInfo
- Publication number
- EP1090875B1 EP1090875B1 EP00250333A EP00250333A EP1090875B1 EP 1090875 B1 EP1090875 B1 EP 1090875B1 EP 00250333 A EP00250333 A EP 00250333A EP 00250333 A EP00250333 A EP 00250333A EP 1090875 B1 EP1090875 B1 EP 1090875B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boom
- telescopic boom
- shell
- wall thickness
- lower shell
- 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
Links
Images
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
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Definitions
- the invention relates to a telescopic boom for cranes, in particular mobile cranes with a main boom that telescopes one basic box and several into it retractable telescopic shots.
- a telescopic boom of the type mentioned is for example from the DE 197 11 975 A1 known.
- This consists of a basic box and several telescopic sections extendable and retractable.
- the basic set and the telescopic sections consist of profiles, each of which has an upper shell and has a lower shell, the opposing legs together are welded.
- the nominal wall thickness of the upper shell is usually less than that of the lower shell. But there are also versions where both shells are one have the same nominal wall thickness.
- nominal wall thickness has been chosen to make it clear that the fluctuations in wall thickness resulting from the manufacturing process of the sheets disregard here both in the transverse and in the longitudinal direction.
- the nominal wall thickness of both shells is both in the transverse and in the longitudinal direction seen constant, with the size varying according to the area of greatest stress directed.
- the design of the wall thickness for this area of greatest stress also significantly determines the weight of the boom.
- Another The determining size is the desired boom length, which also means that required number of shots to be telescoped is determined.
- the maximum axle load is prescribed, so that by the weight of the boom the limits of the load capacity and very quickly Stroke height are reached.
- a telescopic boom for cranes is known from EP 0 117 774 A1, in which the boom a main boom, a basic box and several, telescopically in and out retractable telescopic shots.
- the telescopic sections are rectangular in cross section and consist of sandwich panels.
- the plates comprise two of each other spaced thin sheets, the space between them with a foam or a Plastic mass are filled.
- a metallic composite material is disclosed in DE 44 26 627 A1, which consists of a porous metal core and cover layers made of solid metal.
- such composites are two spaced apart Aluminum and steel sheets deals, the space between them from a metal foam is filled out.
- the field of application is generally technical applications, the improved strength and rigidity properties with a low weight should have.
- the technical problem underlying the invention is one To improve telescopic boom of the type mentioned in that at the same Limit conditions for the lifting height and the maximum permissible axle load a higher Load capacity is possible.
- a telescopic boom for cranes the one Main boom, a basic box and several telescopically retractable and extendable Shots.
- the basic box and the telescopic sections consist of profiles from each of which has an upper and a lower shell. The against each other Legs of the shell are welded together, with the nominal wall thickness of the upper Shell is at most equal to or smaller than that of the lower shell.
- At least one section seen in cross-section, a shell has two spaced apart ones thin sheets with a gap. The gap is partly or entirely with filled in a metal foam.
- metal foam has turned out to be a cheap filler.
- An aluminum-metal foam is preferred used.
- This sandwich construction has the advantage that the weight of the Boom can be lowered drastically without sacrificing rigidity and Dent resistance. The manufacturing effort to manufacture such a boom is Although higher, it is more than made up for by the increased payload.
- the advantage of sandwich construction can be increased if the shell is in Transverse direction has a nominal wall thickness adapted to the load. This has the advantage of having the most stressed areas with the required wall thickness can provide, but the other less stressed Areas with a thinner wall.
- the principle of designing carrier elements in sandwich construction is not only on the basic box and the telescopic shots, but also on the Inner shot head attachable box-like extensions applicable.
- the weight distribution in the head area of outrigger arms is particularly important, since this largely determines the usable load.
- the application of the sandwich construction is independent of Cross-sectional profile of the shots. Whether the shot is rectangular, ovaloid, oval in cross section or round, doesn't matter.
- FIG 1 is a cross section of a trained according to the invention telescopic shot 3 of a telescopic boom 1 ( Figure 3) shown.
- the Shot 3 shown consists of an upper half-box-shaped Shell 4 and a U-shaped lower shell 5.
- the against each other directed legs are each with a longitudinal weld 6, 7 connected.
- the lower shell 5 is of sandwich construction manufactured.
- the detail X in Figure 2 shows the details.
- the sandwich construction is characterized by two outer thin sheets 8,8 ', one Have a distance of 9 to each other.
- the space between the two sheets 8,8 ' can be empty or partially or fully filled. In this embodiment the space is filled with a metal foam 10.
- An aluminum metal foam is preferred used. Because the metal foam is a very low specific Has own weight and the enclosing sheets 8,8 'in thickness is a Unit surface element of a shell 5 produced in a sandwich construction overall lighter than one made from solid sheet.
- Figure 3 shows a longitudinal view of a telescopic boom 1 with a basic box 2 and for the sake of simplicity with only one telescoping shot 3.
- a telescopic boom has several telescopic shots.
- the areas with local force application are deliberately highlighted Service. These are the upper bearing 11 (Fh) and the lower one Bearing point 12 (Fv) and on the other hand the locking points 13.1, 13.2, 13.3.
- FIG. 4 now shows how such a region can be specifically reinforced, if the sandwich construction is used. This is done on the highly stressed Place the filling with metal foam 10 interrupted or removed and instead a solid piece of material 14 used. The connection is made via weld seams 15, 15 '. Alternatively, it is also possible to leave the filling with metal foam 10 instead of to reinforce the outer sheets 8,8 'in thickness. This possibility is indicated by dashed lines.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
- Figur 1
- im Querschnitt einen erfindungsgemäß ausgebildeten Schuß eines Teleskopauslegers
- Figur 2
- das Detail X in Figur 1
- Figur 3
- in einer Längsansicht Bereiche mit lokal großer Krafteinleitung
- Figur 4
- im Längsschnitt Beispiel einer Verstärkung
Claims (10)
- Teleskopausleger für Krane mit einem Hauptausleger ( 1 ), der einen Grundkasten (2) und mehrere darin teleskopartig ein- und ausfahrbare Schüsse (3) aufweist, wobei:der Grundkasten (2) und die Teleskopschüsse (3) aus Profilen bestehen, von denen jedes eine obere (4) und eine untere Schale (5) aufweist, deren gegeneinander gerichtete Schenkel miteinander verschweißt sind,die Nominalwanddicke der oberen Schale (4) höchstens gleich oder kleiner ist als die der unteren Schale (5) und mindestens ein Abschnitt einer Schale (5) im Querschnitt gesehen zwei im Abstand (9) voneinander außenliegende dünne Bleche (8, 8') mit einem Zwischenraum aufweist, undder Zwischenraum teilweise oder ganz mit einem Metallschaum (10) ausgefüllt ist.
- Teleskopausleger nach Anspruch 1,
dadurch gekennzeichnet, dass der Metallschaum ein Aluminium-Metallschaum (10) ist. - Teleskopausleger nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die untere Schale (5) in Sandwich-Bauweise hergestellt ist. - Teleskopausleger nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die untere Schale (5) im spannungs- und beulgefährdeten Scheitelbereich eine Nominalwanddicke aufweist, die über den Krümmungsbereich hinweg bis zum geraden Stegbereich kontinuierlich oder diskontinuierlich bis auf eine erforderliche Mindestwanddicke abnimmt. - Teleskopausleger nach Anspruch 3 oder 4,
dadurch gekennzeichnet, dass die untere Schale (5) U-förmig und der Scheitelbereich der unteren Schale (5) als horizontaler Steg ausgebildet ist. - Teleskopausleger nach einem der Ansprüche 1 - 5,
dadurch gekennzeichnet, dass die obere Schale (4) im spannungsgefährdeten Bereich eine Nominalwanddicke aufweist, die größer ist als in den übrigen Bereichen. - Teleskopausleger nach einem der Ansprüche 1 - 6,
dadurch gekennzeichnet, dass alle Abschnitte des Teleskopauslegers (1), die in Sandwich-Bauweise ausgeführt sind und im Bereich großer lokaler Krafteinwirkungen liegen, eine Verstärkung aufweisen. - Teleskopausleger nach Anspruch 7,
dadurch gekennzeichnet, dass in dem hochbeanspruchten Bereich der Zwischenraum mit Vollmaterial (14) ausgefüllt ist. - Teleskopausleger nach Anspruch 7 oder 8,
dadurch gekennzeichnet, dass in dem hochbeanspruchten Bereich die außenliegenden dünnen Bleche (8, 8') eine größere Dicke aufweisen. - Teleskopausleger nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass der Teleskopausleger (1) Teil eines Fahrzeugkranes ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19948830A DE19948830B4 (de) | 1999-10-06 | 1999-10-06 | Teleskopausleger für Krane |
DE19948830 | 1999-10-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1090875A1 EP1090875A1 (de) | 2001-04-11 |
EP1090875B1 true EP1090875B1 (de) | 2004-01-14 |
Family
ID=7925164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00250333A Expired - Lifetime EP1090875B1 (de) | 1999-10-06 | 2000-10-06 | Teleskopsausleger für Krane |
Country Status (5)
Country | Link |
---|---|
US (1) | US6516962B1 (de) |
EP (1) | EP1090875B1 (de) |
JP (1) | JP2001130872A (de) |
AT (1) | ATE257808T1 (de) |
DE (2) | DE19948830B4 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104555761A (zh) * | 2013-10-11 | 2015-04-29 | 西法股份公司 | 用于起重机的辅助装置和包括所述辅助装置的起重机 |
RU210349U1 (ru) * | 2021-12-30 | 2022-04-08 | Акционерное Общество "Клинцовский автокрановый завод" | Стрела подъёмного крана |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7667100B2 (en) * | 2001-08-31 | 2010-02-23 | Dow Agrosciences Llc | Nucleic acid compositions conferring herbicide resistance |
DE10211481A1 (de) * | 2002-03-15 | 2003-10-02 | Teupen Maschbau Gmbh | Selbstfahrendes Arbeitsfahrzeug |
CN101035950B (zh) * | 2004-08-20 | 2013-03-06 | 罗兰路线维护股份有限公司 | 长铁轨吊起及运送*** |
FR2912391B1 (fr) | 2007-02-12 | 2009-12-25 | Manitou Bf | "dispositif telescopique de manutention" |
DE202009009143U1 (de) * | 2009-07-07 | 2009-09-03 | Terex Demag Gmbh | Teleskopausleger für Krane, insbesondere Fahrzeugkrane |
DE202010006624U1 (de) | 2010-05-10 | 2010-08-05 | Manitowoc Crane Group France Sas | Kranausleger, insbesondere Mobilkranausleger, mit vorgespannten Zugelementen |
US8678210B1 (en) * | 2010-11-17 | 2014-03-25 | Link-Belt Construction Equipment Co., L.P., Lllp | Telescoping boom assembly with base section having primary shell and secondary formed shell |
US9290363B2 (en) | 2011-07-21 | 2016-03-22 | Manitowoc Crane Companies, Llc | Tailor welded panel beam for construction machine and method of manufacturing |
DE102011081061A1 (de) * | 2011-08-17 | 2013-02-21 | Sgl Carbon Se | Kranbrücke, insbesondere für einen Laufkran |
DE102012101905A1 (de) * | 2012-03-07 | 2013-09-12 | Ruthmann Gmbh & Co. Kg | Selbstfahrende Hubarbeitsbühne |
FI126628B (fi) * | 2013-04-11 | 2017-03-15 | Bronto Skylift Oy Ab | Puomi ja henkilönostin |
DE202016003525U1 (de) * | 2016-06-03 | 2016-06-23 | Liebherr-Werk Ehingen Gmbh | Teleskopprofil mit variabel verlaufendem Stoß |
US10894699B2 (en) * | 2017-08-31 | 2021-01-19 | Stellar Industries, Inc. | Lightweight crane |
DE102017127973A1 (de) * | 2017-11-27 | 2019-05-29 | Liebherr-Werk Ehingen Gmbh | Teleskopausleger für einen Kran und Kran mit einem entsprechenden Teleskopausleger |
CN108033369B (zh) * | 2017-11-29 | 2020-05-08 | 太原重工股份有限公司 | 伸缩臂和包括这种伸缩臂的起重机 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3748807A (en) * | 1971-10-12 | 1973-07-31 | Kidde & Co Walter | Adjustable and replaceable lateral guides for telescopic crane boom |
US3958377A (en) * | 1974-06-25 | 1976-05-25 | Milner Jr Edwin Earl | Lightweight high strength boom construction |
US4016688A (en) * | 1975-05-27 | 1977-04-12 | Fmc Corporation | Extensible crane boom structure |
US4003168A (en) * | 1975-06-27 | 1977-01-18 | Walter Kidde & Company, Inc. | Crane boom of trapezoidal boom sections having reinforcing rings |
US4168008A (en) * | 1978-02-23 | 1979-09-18 | Granryd Tod G | Telescopic crane boom having corrugated boom sections |
US4337601A (en) * | 1980-04-24 | 1982-07-06 | Harnischfeger Corporation | High-strength light-weight boom section for telescopic crane boom |
FR2539729A1 (fr) * | 1983-01-21 | 1984-07-27 | Creusot Loire | Fleche telescopique de grue |
NO172697C (no) * | 1989-07-17 | 1993-08-25 | Norsk Hydro As | Fremgangsmaate ved fremstilling av partikkelforsterket metallskum og resulterende produkt |
DE4426627C2 (de) * | 1993-07-29 | 1997-09-25 | Fraunhofer Ges Forschung | Verfahren zur Herstellung eines metallischen Verbundwerkstoffes |
DE19711975B4 (de) * | 1997-03-12 | 2006-09-07 | Terex-Demag Gmbh & Co. Kg | Teleskopausleger für Fahrzeugkrane |
DE19755355C2 (de) * | 1997-12-12 | 1999-12-23 | Grove Us Llc | Teleskopauslegerlagerung mit Prägungen |
DE19829829A1 (de) * | 1998-07-03 | 2000-01-13 | Grove Us Llc Shady Grove | Verbundwerkstoff-Teleskopteil und -ausleger |
-
1999
- 1999-10-06 DE DE19948830A patent/DE19948830B4/de not_active Expired - Fee Related
-
2000
- 2000-10-06 DE DE50005012T patent/DE50005012D1/de not_active Expired - Lifetime
- 2000-10-06 AT AT00250333T patent/ATE257808T1/de not_active IP Right Cessation
- 2000-10-06 JP JP2000306926A patent/JP2001130872A/ja active Pending
- 2000-10-06 EP EP00250333A patent/EP1090875B1/de not_active Expired - Lifetime
- 2000-10-06 US US09/680,691 patent/US6516962B1/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104555761A (zh) * | 2013-10-11 | 2015-04-29 | 西法股份公司 | 用于起重机的辅助装置和包括所述辅助装置的起重机 |
RU210349U1 (ru) * | 2021-12-30 | 2022-04-08 | Акционерное Общество "Клинцовский автокрановый завод" | Стрела подъёмного крана |
Also Published As
Publication number | Publication date |
---|---|
JP2001130872A (ja) | 2001-05-15 |
ATE257808T1 (de) | 2004-01-15 |
US6516962B1 (en) | 2003-02-11 |
EP1090875A1 (de) | 2001-04-11 |
DE19948830B4 (de) | 2005-11-24 |
DE50005012D1 (de) | 2004-02-19 |
DE19948830A1 (de) | 2001-04-19 |
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