EP1496006A2 - Teleskopausleger für einen Fahrzeugkran - Google Patents
Teleskopausleger für einen Fahrzeugkran Download PDFInfo
- Publication number
- EP1496006A2 EP1496006A2 EP04024391A EP04024391A EP1496006A2 EP 1496006 A2 EP1496006 A2 EP 1496006A2 EP 04024391 A EP04024391 A EP 04024391A EP 04024391 A EP04024391 A EP 04024391A EP 1496006 A2 EP1496006 A2 EP 1496006A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile part
- telescopic boom
- shell segments
- telescopic
- boom according
- 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.)
- Withdrawn
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
- 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 in the preamble of Claim 1 genus specified.
- the boom is doing a bending load in the two main axes exposed; at the top of the boom there is tension, while at the bottom of the cantilever compressive stresses occur.
- By lateral forces and off-center loads also occur a horizontal bending and torsions.
- Such a cross section can then be built most easily, if everywhere the maximum Voltages are equal and close to the permissible voltage. In the case that same large forces from different directions occur, these are prerequisites for example, in thin-walled circular tubes or in a square Truss fulfilled.
- a cross section for example, higher loaded in the vertical direction As in the horizontal, so is an optimal round cross-section to an ellipse and a optimal square cross section is a rectangular framework, in both cases the Cross sections are higher than they are wide.
- 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 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.
- Such completely round bottom profile parts have indeed good load introduction and Stability properties, but are not sufficient in terms of rigidity on rectangular trusses approach. It is often necessary, additional stability-promoting elements, such as welded-in denture strips, incorporate or make the cross-section a little thicker, which affect the overall weight of the boom.
- German utility model no. 94 02 692 describes a boom profile with an im essential semi-box-shaped upper section and one with the upper section connected rounded portion, wherein the lower portion at least one plane Wall section has.
- This form design should be tried, both a sufficient buckling rigidity as well as a sufficient load resistance against bending manufacture. So it is a flat plate segment (Wandungsabites) in the lower Profile cross section used.
- the Link piece and / or at least one telescopic section consists of profiles, each of which a lower round and an upper semi-box-shaped part, whose against each other directed legs are welded together.
- the upper profile part has the Shape of an isosceles trapezoid without a longer baseline in such a way that the Legs of the profile parts abut each other to form an angle on the Piofilinnenhat is less than 180 °. This should achieve an even better dent resistance become.
- the lower profile part must be far above the center of gravity of a shot to the top.
- a material increase of a neutral zone is at a weight-optimized boom but not beneficial.
- a telescopic boom for a vehicle crane of in the preamble of claim 1 specified genus, wherein the upper profile part 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.
- the invention is based on the object, a telescopic boom of the specified genus to create, in which the above-mentioned disadvantages do not occur.
- a should Telescopic boom are proposed, which has an even increased dent resistance and Therefore, especially for extreme loads such as in luffing operation, at guyed Systems or in a steep boom position is suitable.
- the advantages achieved by the invention are based on the fact that the upper profile part of Base part and / or at least one telescopic part by several, at obtuse angles abutting shell segments is formed having an outwardly curved shape to have.
- the kinks act between the individual curved outwards Shell segments like idealized stiffeners. This is for the luffing tip operation, as well in prestressed and / or guyed boom systems ("Mega-Lift") of large Advantage, since now both the upper profile part and the lower profile part loaded on pressure can be. Since - unlike the telescopic arms of the prior art - the entire shell shell cross-section increases, increases in the profile of the telescopic boom according to the invention, the stiffness while minimizing the weight.
- Introductory surfaces provided in the upper shell which are the forces of the subsequent, inner telescopic part on the upper shell of the outer telescopic part or the Base part act, can record.
- the upper profile part of the telescopic boom according to the present invention consists of at least two curved shell segments.
- the number of used Shell segments depends on the one hand on the desired shape of the boom and on the other hand from the occurring load cases. It may preferably be three, four or more Shell segments are used; in the formation of a shield shape, for example four curved shell segments available.
- the upper and the lower profile part run on their Shank ends in a straight shape, giving them their adjoining, straight Leg ends can be welded together. This results in an optimal Force transmission from the upper profile part to the lower profile part and vice versa in dependence on the type of load.
- the weld remains between the lower profile part and the upper Profile part in the area of the neutral zone, as the curved, with obtuse angles abutting shell segments in the entire upper profile part a higher level cause the bending stiffness.
- the upper profile part with its lower sheet thickness can be placed accordingly lower on the lower profile parts, that is, it will now possible, the weld joint between 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 folds in the Upper part and the lower part greatly reduced.
- An upper profile part with a cross section of a plurality of outwardly curved Tray segments is advantageous when at clamping operation pressure forces on the upper Profile part act.
- With predominant bending stress around both main axes with Tensile forces in the upper profile part is provided according to a preferred embodiment, that in the upper profile part, the outwardly curved shell segments of one, two or several straight segments are interrupted. This will make a more even Voltage distribution achieved and an ovalization of the cross section under Bending stress around the main axis reduced.
- a continuously curved, upper profile part in the area of Force introduction especially at least at boss Asial the following telescope part, total be supported by sliders.
- a straight shell segment By inserting a straight shell segment can the sliders omitted at this point.
- Such sliders are in the area with obtuse angles of adjacent, curved shell segments.
- the Slider lengths in the direction of the boom axis may vary by varying the width of the Straight segment can be optimized so that the same length in the inserted state a larger boom length is possible.
- the figures show a cross section through a part of a telescopic boom, wherein it is around the rotatably and pivotally mounted base part or an extendable telescope part can act.
- the illustrated Have cross-sectional shape This allows the telescopic parts with very small distances from each other in the base part, because of the reasons explained above Stiffening agents, such as welded Beulsteifen, omitted and thin Wall thicknesses can be used. This creates a stable, lighter Telescopic boom.
- Figure 1 indicated generally by the reference numeral 10 part of a Telescopic boom, so either base or at least one telescope part, consists of an upper profile part 12 and a lower profile part 14.
- the free leg ends of two profile parts 12, 14 run in a straight shape 12a, 14a and are at the ends these straight portions 12a, 14a welded together.
- the respective welding joints are indicated by the 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 about the same vertical height.
- the lower profile part is - in a similar manner as in 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 radii.
- the upper profile part 12 consists of three outwardly curved Shell segments 12b, 12c, 12d, which also circular arc shape with each different Circle radii have.
- the two lower shell segments 12b, 12d terminate in the straight parts 12a, which with the straight parts 14 a of the lower profile part 14 are welded.
- all 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 one Tray segments 14a, 14b, 14c and 14d.
- Figure 2 shows the cross-sectional shape of a somewhat modified embodiment of a Base part and / or at least one profile part, which differs from the cross-sectional shape of FIG 1 differs only in that in the upper profile part 12 a straight shell segment 12e is inserted.
- This straight shell segment 12e replaces a part of the upper segment 12c in the embodiment of Figure 1 and extends both in the illustration of Figure 2 as well as the use of such a telescopic boom horizontal.
- To the straight segment 12e are followed by a short segment 12f or 12g, which in turn - similar to in the embodiment of Figure 1 - in the lateral elements 12b, 12d pass.
- straight segments may also be used between the outwardly curved shell segments (12b, 12f) and (12g and 12d) be provided.
- the number of curved shell segments in the upper profile part 12 is not, as in illustrated embodiments, limited to three, but it can also two, four or five outwardly curved shell segments.
- 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 member 12 each have a more outwardly curved Cup segment 12g ', 12f is provided, the tangential in the central straight Cup segment 12e on one side and a less curved outward Shell segment 12b ', 12d'passes on the other side.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
Description
- Fig. 1
- einen Querschnitt durch eine erste Ausführungsform eines Basis- oder Teleskopteils,
- Fig. 2
- einen Querschnitt durch eine leicht modifizierte Ausführungsform, und
- Fig. 3
- einen Querschnitt durch eine leicht abgeänderte Variante der Ausführungsform nach Figur 2.
Claims (10)
- Teleskopausleger für einen Fahrzeugkrana) mit einem dreh- und schwenkbar lagerbaren Basisteil,b) in dem mehrere zusammenschiebbare und ausfahrbare Teleskopteile gelagert sind,c) wobei das Basisteil und/oder mindestens ein Teleskopteil ein oberes Profilteil (12) und ein unteres Profilteil (14) aufweisen undd) das untere Profilteil (14) aus mehreren aneinandergrenzenden Schalensegmenten (14b, 14c, 14d) besteht,e) die jeweils eine nach außen gekrümmte Form aufweisen, dadurch gekennzeichnet, dassf) das obere Profilteil (12) aus mehreren Schalensegmenten (12b, 12c, 12d) besteht,g) die eine nach außen gekrümmte Form haben.
- Teleskopausleger nach Anspruch 1, dadurch gekennzeichnet, dass das obere Profilteil (12) und/oder das untere Profilteil (14) aus mindestens zwei, vorzugsweise drei, vier oder mehr Schalensegmenten (12b, 12c, 12d; 14b, 14c, 14d) besteht.
- Teleskopausleger nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das untere Profilteil (14) und das obere Profilteil (12) an ihren Schenkelenden in eine gerade Form (12a, 14a) auslaufen und an ihren aneinander grenzenden geraden Schenkelenden (12a, 14a) miteinander verschweißt sind.
- Teleskopausleger nach Anspruch 3, dadurch gekennzeichnet, dass sich die Schweißstöße (16) im Bereich der neutralen Zone des Basisteils und/oder mindestens eines Teleskopteils befinden.
- Teleskopausleger nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die gekrümmten Schalensegmente (12b, 12c, 12d; 14b, 14c, 14d) zumindest teilweise kreisbogenförmig ausgebildet sind.
- Teleskopausleger nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die benachbarten gekrümmten Schalensegmente (12b, 12c, 12d; 14b, 14c, 14d) des oberen Profilteils (12) jeweils einen stumpfen Winkel mit einander bilden.
- Teleskopausleger nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zumindest einige der gekrümmten Schalensegmente (12b, 12c, 12d; 14b, 14c, 14d) des oberen Profilteils (12) und/oder des unteren Profilteils (14) eine Kreisbogenform mit unterschiedlichen Radien aufweisen.
- Teleskopausleger nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass im oberen Profilteil (12) die gekrümmten Schalensegmente (12b, 12c, 12d) durch mindestens ein gerades Segment (12e) voneinander getrennt sind.
- Teleskopausleger nach Anspruch 8, dadurch gekennzeichnet, dass ein zentrales, gerades Segment (12e) über ein stärker nach außen gekrümmtes Schalensegment (12g', 12f') in ein weniger stark nach außen gekrümmtes Schalensegment (12b', 12d') übergeht.
- Teleskopausleger nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die gekrümmten Schalensegmente tangential ineinander übergehen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20120121U | 2001-12-12 | ||
DE20120121U DE20120121U1 (de) | 2001-12-12 | 2001-12-12 | Teleskopausleger für einen Fahrzeugkran |
EP02026316A EP1321425B1 (de) | 2001-12-12 | 2002-11-21 | Teleskopausleger für einen Fahrzeugkran |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02026316A Division EP1321425B1 (de) | 2001-12-12 | 2002-11-21 | Teleskopausleger für einen Fahrzeugkran |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1496006A2 true EP1496006A2 (de) | 2005-01-12 |
EP1496006A3 EP1496006A3 (de) | 2005-02-02 |
Family
ID=7965065
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04024391A Withdrawn EP1496006A3 (de) | 2001-12-12 | 2002-11-21 | Teleskopausleger für einen Fahrzeugkran |
EP02026316A Expired - Lifetime EP1321425B1 (de) | 2001-12-12 | 2002-11-21 | Teleskopausleger für einen Fahrzeugkran |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02026316A Expired - Lifetime EP1321425B1 (de) | 2001-12-12 | 2002-11-21 | Teleskopausleger für einen Fahrzeugkran |
Country Status (8)
Country | Link |
---|---|
US (1) | US6978907B2 (de) |
EP (2) | EP1496006A3 (de) |
JP (1) | JP2003201088A (de) |
KR (1) | KR100893929B1 (de) |
CN (1) | CN1319846C (de) |
CA (1) | CA2413969C (de) |
DE (2) | DE20120121U1 (de) |
ES (1) | ES2273961T3 (de) |
Families Citing this family (13)
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 |
ES2357214T3 (es) | 2005-07-07 | 2011-04-20 | Grove U.S. Llc | Sección de banda superior para grúas telescópicas . |
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 (1)
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 |
Family Cites Families (10)
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 |
-
2001
- 2001-12-12 DE DE20120121U patent/DE20120121U1/de not_active Expired - Lifetime
-
2002
- 2002-11-21 ES ES02026316T patent/ES2273961T3/es not_active Expired - Lifetime
- 2002-11-21 EP EP04024391A patent/EP1496006A3/de not_active Withdrawn
- 2002-11-21 DE DE50209002T patent/DE50209002D1/de not_active Expired - Lifetime
- 2002-11-21 EP EP02026316A patent/EP1321425B1/de not_active Expired - Lifetime
- 2002-12-11 CA CA002413969A patent/CA2413969C/en not_active Expired - Fee Related
- 2002-12-12 KR KR1020020079113A patent/KR100893929B1/ko not_active IP Right Cessation
- 2002-12-12 US US10/317,169 patent/US6978907B2/en not_active Expired - Lifetime
- 2002-12-12 JP JP2002360935A patent/JP2003201088A/ja active Pending
- 2002-12-12 CN CNB021542481A patent/CN1319846C/zh not_active Expired - Lifetime
Patent Citations (1)
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 (en) | 2003-06-12 |
CN1436716A (zh) | 2003-08-20 |
EP1321425A1 (de) | 2003-06-25 |
JP2003201088A (ja) | 2003-07-15 |
KR100893929B1 (ko) | 2009-04-21 |
US6978907B2 (en) | 2005-12-27 |
DE50209002D1 (de) | 2007-02-01 |
CA2413969C (en) | 2009-02-24 |
KR20030048361A (ko) | 2003-06-19 |
ES2273961T3 (es) | 2007-05-16 |
EP1321425B1 (de) | 2006-12-20 |
DE20120121U1 (de) | 2002-03-07 |
CN1319846C (zh) | 2007-06-06 |
EP1496006A3 (de) | 2005-02-02 |
US20030106871A1 (en) | 2003-06-12 |
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