EP0499208B2 - Teleskopausleger für Fahrzeugkrane o.dgl. - Google Patents
Teleskopausleger für Fahrzeugkrane o.dgl. Download PDFInfo
- Publication number
- EP0499208B2 EP0499208B2 EP92102268A EP92102268A EP0499208B2 EP 0499208 B2 EP0499208 B2 EP 0499208B2 EP 92102268 A EP92102268 A EP 92102268A EP 92102268 A EP92102268 A EP 92102268A EP 0499208 B2 EP0499208 B2 EP 0499208B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- legs
- section
- sections
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000003351 stiffener Substances 0.000 description 3
- 241000237983 Trochidae Species 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
-
- 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
- B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs
Definitions
- the invention relates to a telescopic boom for mobile cranes, consisting of one on the Vehicle or its superstructure pivoted outer link, in which several telescopically collapsible and extendable Telescopic shots are held, each shot with bearings for the shot carried in this provided and lockable with this shot and wherein a hydraulic pressure medium piston-cylinder unit to extend and retract the individual Shots are provided.
- the individual telescopic shots essentially one box-like profile with the lower straps of the individual shots flat V-shaped profiles or have flat trough-shaped profiles that by angled from a flat middle web part Legs are formed.
- These lower ones Belts are with the edge areas facing down pointing leg of U-shaped profiled parts with rounded corners between their web parts and legs to box-shaped Welded profiles, being in the area of Welded joints additionally stiffening strut-like sheets can be welded.
- the individual telescopic shots are on top of each other the channel-shaped lower chords after the known from DE-PS 21 48 966 pressure distribution ratio stored, being in the area of the upper rounded corners of the box profiles the bearing forces by rolling or shaped accordingly Camp shoes are transferred.
- the lower chord the is mainly loaded by bending forces through its V-shape or the two longitudinal, the gaps forming the channel shape are stiffened and secured against dents.
- Telescopic booms are not only bent, but also on torsion charged. They work in the lower flange trough or V-shaped cross section arranged Bearing elements against rotation. But is the telescopic boom with a luffing needle provided, this is via a rear A-frame or the like guyed by guy ropes so that a Guide in the bearing elements that transmits torsional forces the V-shaped lower chords can be when the moment acting backwards is equal to or greater than that to the front acting and resulting from load and luffing boom weight resulting moment.
- the object of the invention is a telescopic boom to create the type specified at the beginning, which is very rigid and resistant to buckling of his individual shots through a simple and economically producible construction distinguished.
- the profile according to the invention exists based on its horizontal axis from different Profile parts while it's his vertical axis is symmetrical.
- the profile according to the invention is particularly favorably the requirements of a telescopic boom fair.
- the profiles of each A telescopic boom shots are during of the company primarily in its upper area on train and in its lower area Stressed so that the lower area is strong is sensitive to bulging.
- Convention profiles which were either box-shaped or outgoing of a box shape with a lower V-shaped Profile parts were provided, were increased the buckling stiffness inside and / or outside in the profile stiffened sheet welded.
- the profile according to the invention is particularly favorable Way the demands of a telescopic boom fair because the lower one is highly sensitive to bulging Area consists of a round profile, which is much less sensitive to buckling than box-shaped Profiles.
- the sensitivity to buckling of the lower part of the profile increases with the increasing compressive stress, i.e. Towards the lower vertex line.
- the configuration of the lower one is therefore favorable Profile part in the form of a semi-ellipse, because this in the apex area the smallest radius of curvature has and therefore in the area with the greatest compressive stress the least sensitivity to buckling owns.
- the legs of the upper profile part are standing perpendicular to the straight line forming the top chord Bridge part. Because the upper profile part on train is claimed, the risk of buckling is low, so that the straight profile legs are accepted.
- the top shell of each shot can be made be folded in one piece over the entire length, so that there are no welds in the draft zone and especially no transverse welds available.
- the flat upper web part of the upper profile part also for maintenance purposes Expedient, as these can be committed safely can.
- the upper profile part can also be used be sprayed on a rough surface, so that the required sliding security when walking is.
- the piston rod On that of the outer link 1 bordered part is in the joint 4 the piston rod a hydraulic piston-cylinder unit 5 articulated.
- the link piece and the other telescopic ones Shots are in the area with their ends provided collar-like stiffeners 8-10 on which Hydraulic piston cylinder units provided with locking bolts are arranged.
- the innermost telescopic shot is, as from Fig. 1st can be seen at its outer end with a Provide roller head.
- FIG. 2 is the cross section through a Telescopic shot or an outer link of one Telescopic boom that can be seen from a lower semi-elliptical profile part 40 and an upper semi-box-shaped profile part 41, the Legs in a horizontal parting plane welded together by welds 42, 43 are.
- the legs 44,45 of the upper half-box-shaped Profile parts are with the upper web part 46 through curved areas 47, 48 with the bending radius RL connected.
- the lower profile part 40 is through a shell with a semi-elliptical cross-section formed, the profile shape with great approximation an ellipse through the three radii ri, Rmi and Ri can be described.
- the lower part has the shape of a half ellipse, which is the lower constructive Profile shell forms.
- the lower part can for reasons of manufacture by dimension V lengthened at the top, making the dimension H2 the Top shell is shortened accordingly.
- the compressive stress (-) is due to the risk of buckling often the most critical stress thin-walled hollow profiles.
- the greatest bending compressive stress arises from the main load of the boom around the axis X-X (X direction) in lower vertex of radius ri.
- the lateral load or deflection of the Boom around the Y-Y axis (Y direction) in both Direction causes in the profile sidewalls Compressive or tensile stresses, the size of which in Ratio of the distance to the axis of inertia Y-Y results.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Description
einen Teleskopausleger in unterschiedlichen Ausfahrzuständen seiner Teleskopschüsse,
einen Querschnitt durch einen Teleskopschuß bzw. ein äußeres Anlenkstück mit einem aus einem halbkastenförmigen Teil und einem runden Teil zusammengesetztem Profil, und
die zugehörigen Biege-, Biegezug-, Biegedruck- und die zusammengesetzten Beanspruchungen darstellenden Diagramme.
Claims (1)
- Teleskopausleger (2) für Krane, vorzugsweise Fahrzeugkrane, bestehend aus einem auf dem Fahrzeug bzw. dessen Oberwagen schwenkbar gelagerten äußeren Anlenkstück (1), in dem mehrere teleskopartig zusammenschiebbare und ausfahrbare Teleskopschüsse gehaltert sind, wobei jeder Schuß mit Lagerungen für den in diesem geführten Schuß versehen und mit diesem Schuß verriegelbar ist und wobei eine hydraulische Druckmittelkolbenzylinder-Einheit zum Aus- und Einfahren der einzelnen Schüsse vorgesehen ist,
dadurch gekennzeichnet,daß das Anlenkstück (1) und die Schüsse aus Profilen bestehen, von denen jedes in der horizontalen, auf das Fahrzeug geschwenkten Lage einen unteren runden (40) und einen oberen halbkastenförmigen (41) Teil aufweist, und deren gegeneinander gerichtete Schenkel (44, 45) miteinander verschweißt sind,daß der untere Profilteil (40) etwa die Form einer halben Ellipse mit durch den kleinen Radius gebildeten Scheitel besitzt,daß die Schenkel des unteren, runden Profilteils tangential an die geraden Schenkel (44, 45) des oberen Profilteils (41) anschließen unddaß die Schenkel (44, 45) des oberen Profilteils (41) rechtwinkelig zu dem den Obergurt bildenden geraden Stegteil (46) stehen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9218841U DE9218841U1 (de) | 1991-02-11 | 1992-02-11 | Teleskopausleger für Fahrzeugkrane o. dgl. |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9101533 | 1991-02-11 | ||
| DE9101533U | 1991-02-11 | ||
| DE9102552U | 1991-03-04 | ||
| DE9102552U DE9102552U1 (de) | 1991-02-11 | 1991-03-04 | Teleskopausleger für Fahrzeugkrane o.dgl. |
| DE9113981U DE9113981U1 (de) | 1991-11-11 | 1991-11-11 | Teleskopausleger für Fahrzeugkrane o.dgl. |
| DE9113981U | 1991-11-11 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0499208A2 EP0499208A2 (de) | 1992-08-19 |
| EP0499208A3 EP0499208A3 (en) | 1993-05-19 |
| EP0499208B1 EP0499208B1 (de) | 1995-06-14 |
| EP0499208B2 true EP0499208B2 (de) | 2001-10-17 |
Family
ID=27208262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92102268A Expired - Lifetime EP0499208B2 (de) | 1991-02-11 | 1992-02-11 | Teleskopausleger für Fahrzeugkrane o.dgl. |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0499208B2 (de) |
| AT (1) | ATE123743T1 (de) |
| DE (1) | DE59202474D1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2078693A1 (de) | 2008-01-09 | 2009-07-15 | Kobelco Cranes Co., Ltd. | Teleskopischer Ausleger |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4344795A1 (de) * | 1993-12-28 | 1995-06-29 | Liebherr Werk Ehingen | Fahrbarer Kran mit einem Teleskopausleger |
| DE19624312C2 (de) * | 1996-06-18 | 2000-05-31 | Grove Us Llc | Teleskopausleger für Fahrzeugkrane |
| DE19711975B4 (de) * | 1997-03-12 | 2006-09-07 | Terex-Demag Gmbh & Co. Kg | Teleskopausleger für Fahrzeugkrane |
| DE19811813B4 (de) * | 1998-03-18 | 2005-11-24 | Grove U.S. LLC (n.d.Ges.d.Staates Delaware) | Seitliche Auslegerverriegelung |
| US6499612B1 (en) | 2001-07-27 | 2002-12-31 | Link-Belt Construction Equipment Co., L.P., Lllp | Telescoping boom assembly with rounded profile sections and interchangeable wear pads |
| DE20120121U1 (de) * | 2001-12-12 | 2002-03-07 | Grove U.S. LLC, Shady Grove, Pa. | Teleskopausleger für einen Fahrzeugkran |
| JP2006021877A (ja) * | 2004-07-08 | 2006-01-26 | 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 |
| US20180297825A1 (en) * | 2015-10-13 | 2018-10-18 | Tadano Ltd. | Operating machine boom |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1279493A (fr) * | 1960-11-10 | 1961-12-22 | Grue perfectionnée | |
| DE1170134B (de) * | 1962-05-11 | 1964-05-14 | Focke Wulf Ges Mit Beschraenkt | Hoehenverstellbare Arbeitsbuehne |
| US3250182A (en) * | 1963-08-01 | 1966-05-10 | Harold K Nansel | Multiple extension apparatus |
| FR1415329A (fr) * | 1964-12-01 | 1965-10-22 | Ver Flugtechnische Werke | Plate-forme de travail réglable en hauteur |
| DE2148966C3 (de) * | 1971-09-30 | 1978-11-23 | Liebherr-Werk Ehingen Gmbh, 7930 Ehingen | Teleskopausleger, insbesondere für straßenverfahrbare Krane |
| US3842985A (en) * | 1972-12-15 | 1974-10-22 | Harnischfeger Corp | Means for extending and retracting crane boom section |
| US4588347A (en) * | 1981-10-02 | 1986-05-13 | Coles Cranes Limited | Telescopic booms |
| DE3216427A1 (de) * | 1982-05-03 | 1983-11-10 | Heinrich H. Klüssendorf GmbH & Co KG, 1000 Berlin | Einrichtung zur fuehrung zweier axial ineinander beweglicher stangen- oder/und roehrenartiger elemente |
| SE456820B (sv) * | 1984-03-12 | 1988-11-07 | Oesa Ab | Anordning vid teleskoparmar |
| DE3510710A1 (de) * | 1985-03-23 | 1986-10-02 | Fried. Krupp Gmbh, 4300 Essen | Teleskopkran |
| US4688690A (en) * | 1986-03-07 | 1987-08-25 | Harnischfeger Corporation | Method and apparatus for extending fly section of crane boom |
| DE9013210U1 (de) * | 1990-09-18 | 1991-01-03 | Liebherr-Werk Ehingen Gmbh, 7930 Ehingen | Teleskopiersystem mit verringerter Knicklänge des Teleskopierzylinders |
-
1992
- 1992-02-11 EP EP92102268A patent/EP0499208B2/de not_active Expired - Lifetime
- 1992-02-11 DE DE59202474T patent/DE59202474D1/de not_active Expired - Lifetime
- 1992-02-11 AT AT92102268T patent/ATE123743T1/de not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2078693A1 (de) | 2008-01-09 | 2009-07-15 | Kobelco Cranes Co., Ltd. | Teleskopischer Ausleger |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0499208B1 (de) | 1995-06-14 |
| ATE123743T1 (de) | 1995-06-15 |
| EP0499208A3 (en) | 1993-05-19 |
| DE59202474D1 (de) | 1995-07-20 |
| EP0499208A2 (de) | 1992-08-19 |
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