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EP0194615B1 - Crane girder - Google Patents

Crane girder Download PDF

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Publication number
EP0194615B1
EP0194615B1 EP86103093A EP86103093A EP0194615B1 EP 0194615 B1 EP0194615 B1 EP 0194615B1 EP 86103093 A EP86103093 A EP 86103093A EP 86103093 A EP86103093 A EP 86103093A EP 0194615 B1 EP0194615 B1 EP 0194615B1
Authority
EP
European Patent Office
Prior art keywords
track
trolley
force
tubular member
section
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
Application number
EP86103093A
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German (de)
French (fr)
Other versions
EP0194615A1 (en
Inventor
Horst J. Dr.-Ing. Roos
Rudolf Prof. Dr.-Ing. Neugebauer
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Roos Horst J Dr-Ing
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Individual
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Priority to AT86103093T priority Critical patent/ATE44016T1/en
Publication of EP0194615A1 publication Critical patent/EP0194615A1/en
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Publication of EP0194615B1 publication Critical patent/EP0194615B1/en
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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
    • B66C11/00—Trolleys or crabs, e.g. operating above runways
    • B66C11/02—Trolleys or crabs, e.g. operating above runways with operating gear or operator's cabin suspended, or laterally offset, from runway or track
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C7/00—Runways, tracks or trackways for trolleys or cranes
    • B66C7/08—Constructional features of runway rails or rail mountings

Definitions

  • Cranes of various types are used to lift and transfer loads and also to transport them in a limited area. This can e.g. Overhead cranes, gantry cranes, console cranes, pillar jib cranes and others. What they have in common is a crane girder on which a trolley can be moved on running track profiles by means of a trolley, which trolley is equipped with a lifting mechanism for the load suspension device.
  • a crane girder on which a trolley can be moved on running track profiles by means of a trolley, which trolley is equipped with a lifting mechanism for the load suspension device.
  • crane girders that have a tubular body
  • those crane girders that have three tubular bodies, two of which serve as lower chord girders and one as upper chord girder, which are connected to each other to form a framework and are mutually stiffened.
  • the crane girder and the trolley should have the lowest possible overall height.
  • a crane girder made of a tubular girder is known from DE-U-83 32 842. With him, two L-profiles or two T-profiles are welded onto the tubular body as raceway profiles.
  • the raceway profiles are either arranged symmetrically to the vertical longitudinal center plane of the tubular body or pivoted relative to one another by 180 ° about the longitudinal axis of the tubular body. In both cases, the force lines of action of their raceway surfaces are aligned parallel to one another and thus also parallel to the force line of action of the lifting mechanism and its load-bearing element. Especially when using an angle scraper, this results in considerable moment forces on the angle trolley.
  • raceway profiles are arranged on the tube body in such a way that the line of action of force that passes through the connection point between the raceway profile and the tube wall intersects the tube wall at a certain angle.
  • a crane girder in the form of a box girder with an angular trolley is known, the two track profiles of which are arranged on the box girder in such a way that their lines of action and that of the hoist intersect at one point.
  • the track profiles are arranged at the corners of the box profile. This requires an additional load introduction structure at the upper corner of the box section. It is part of her that the one web plate is pulled up beyond the top chord. On the protruding edge of this web plate, a sloping plate is welded as a track for the angular cat, on which a guide rail is welded again. The sloping plate can only be welded to the outside of the web plate.
  • the invention has for its object to provide a crane girder with angled trolley or trolley, in which the lowest possible stress on the individual parts occurs with the smallest possible height and the lowest possible material and manufacturing costs.
  • a safe lateral guidance of the angular trolley or trolley on the crane girder is also ensured if, for example, larger manufacturing tolerances with regard to the design and, in particular, the arrangement of the track profiles on the crane girder or manufacturing tolerances with regard to the arrangement and alignment of the running wheels on the Angled trolleys or trolleys occur or if, under higher loads or under unfavorable load directions, such as with a very strong side pull of the lifting device, greater elastic deformations on the angled trolley or trolley and / or on the crane girder and consequent displacements of the angled trolley or trolley with respect to the track profiles occur.
  • the crane girder 10 has a tubular body 11, which is welded to both sides with an end plate 12 each.
  • the crane girder 10 is connected via these end disks 12 by means of push knobs and screws (not shown in detail), each with a crane trolley 13, each with a pair of running wheels 14.
  • Two raceway profiles 15 and 16 are welded to the tubular body 11 in its longitudinal direction. They are used to guide an angular trolley 17, which is equipped with a lifting mechanism 18 for a load suspension device, for example in the form of a load hook 19.
  • the angular trolley 17 has a trolley 21 with three running wheels 22 ... 24.
  • the two impellers 22 and 23 are arranged on one side of the undercarriage 21 and the third impeller 24 on the other side of the undercarriage 21 with respect to the central plane of the tubular body 11.
  • the drive 25 of the angular trolley is coupled to the one impeller 23.
  • two running wheels can be arranged on each side.
  • two travel drives can also be present, which are either coupled on the same side of the angular trolley to the running wheels there or which are coupled on different sides of the angular trolley to each of the running wheels present there.
  • the raceway profile 15 is formed by a section steel section with an L-shaped cross section.
  • the vertically oriented profile part or leg 26 of the L-profile in FIG. 2 serves the circular-cyclic impeller 24 as a raceway. His career area is flat.
  • the horizontal or at least approximately tangential to the tubular wall of the tubular body 11 in FIG. 2, the profile part or leg 27 of the L-profile and its welded joint 28 between it and the tubular body 11 is used to transfer the load from the roller 24 to the tubular body 11.
  • the second connection point 29 between the profile part 26 and the tubular body 11 is also designed as a weld seam.
  • the track profile 16 is also formed by a section steel section with an L-shaped cross section.
  • a rail 32 is additionally welded, the flat top of which forms the actual raceway surface for the wheels 22 and 23.
  • the two adjoining side surfaces of the rail 32 serve, if necessary, to guide the two wheels 22 and 23 laterally.
  • they are provided on both end faces with a corresponding tracking means in the form of a wheel flange, the clear distance between which is greater than the width of the rail 32 , wherein in the normal operating position of the angular trolley 17, each of the flanges has a certain clear distance from the rail 32.
  • the raceway profiles 15 and 16 are arranged and aligned on the tubular body 11 such that the surface normal of their raceway surface which passes through the first connection point 28 or 34 intersect at a point 36 which is at least approximately on the resulting force action line 37 of the lifting mechanism 18 is.
  • the raceway profiles 15 and 16 are further arranged and aligned such that these force action lines 38 and 39 of the impeller 24 and the impellers 22 and 23 passing through the common intersection 33 from the connection point 28 and 34, respectively, from the center line, ie the circular line in the Middle between the out senseite and the inside, the pipe wall of the tubular body 11 tangent.
  • the profile part 27 of the track profile 15 and the profile part 33 of the track profile 16 are arranged at least approximately symmetrically and thus centrally with respect to the associated force action line 38 or 39.
  • the two running wheels 22 and 23 and the one running wheel 24 on the undercarriage 21 are arranged such that their normal plane, that is generally the plane of symmetry of their elevation, is at least approximately aligned with the associated force action line 39 and 38, respectively, in the normal operating state.
  • the crane girder 40 has three tubular bodies 41 ... 43, of which the two tubular girders 41 and 42 are arranged next to one another in the horizontal direction and form lower chord supports, whereas the tubular body 43 is arranged at a certain distance above it and acts as a top belt carrier.
  • the three tubular bodies 41 ... 43 are combined by a truss 44 in a conventional design to form the crane girder 40 and thereby also stiffened against one another.
  • a trolley 45 with an approximately trough-shaped elevation is arranged on this crane girder 40.
  • Your undercarriage 46 has a central part 47 and a side part 48 and 49 each.
  • the lifting mechanism 51 is fastened to the central part 47 with a load-bearing element in the form of a hook 52.
  • a raceway profile 53 or 54 is welded to the outer side of the two lower belt supports 41 and 42 facing away from each other.
  • the two raceway profiles 53 and 54 each have a T-shaped cross section.
  • the top of the flange part of the T-profile forms the raceway surface for the wheels 55 and 56, which are mounted on the side parts of the chassis 46 of the trolley 45.
  • the web part 57 or 58 of the T-profile is used to introduce force into the associated lower chord support 41 or 42.
  • These web parts or profile parts are in turn aligned at least approximately tangentially to the tube wall of the associated lower chord support 41 or 42 and at the connection point 59 located in their alignment line or 60 welded to the lower flange 41 or 42.
  • a second connection point 61 or 62 is present between the lower flange support 41 and 42 and the flange profile part of the track profile 53 or 54 facing it.
  • the wheels 55 and 56 which can be moved on these profile parts are at least approximately in alignment with their central plane with the plane of symmetry of the profile parts 57 and 58.
  • This resulting line of action 63 and 64 of the wheels 55 and 56 intersect at a point 65 which in turn is at least approximately on the resulting line of action 66 of the hoist 51 and its load-bearing element 52 is located.
  • This common intersection 65 will generally lie in the elevation symmetry plane of the trolley 45 and the crane girder 40. However, it can also lie outside the plane of symmetry of the crane girder 40 if only the aforementioned basic rules regarding the arrangement and alignment of the track profiles 53 and 54 and the parts of the crane girder 40 and the trolley 45 interacting therewith are observed.
  • Tracking rollers 67 and 68 are arranged on the side parts 48 and 49 of the trolley 45. They form an additional guide for the trolley 45 with respect to the track profiles 53 and 54. A distance which cannot be seen in FIG. 4 is maintained between these track guide rollers 67 and 68 and the associated track profile 53 and 54. This is so large that the track rollers 67 and 68 do not abut the track profiles in normal loading cases of the trolley 45. Conversely, it is so small that, for example, with a stronger side pull of the lifting device 51, the trolley 45 and its wheels 55 and 56 cannot deviate too far from their normal operating position.
  • the wheels 55 and 56 can be arranged in pairs on both sides of the trolley 45. However, as with the angular trolley 17, they can also be arranged in pairs on one side and in the singular number on the other side, the individual impeller then being arranged at least approximately in the middle between the two other impellers arranged in pairs.
  • the traction drive 69 for the trolley 45 is either coupled to an impeller or there are two traction drives which are either coupled to one of the impellers on one side or to an impeller on each of the two sides of the trolley 45.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Leg Units, Guards, And Driving Tracks Of Cranes (AREA)

Abstract

1. Crane girder with the features : - it has a tubular member (11) of annular cross-section, - at least two track sections (15, 16) are welded onto the tubular member (11) in its longitudinal direction, in each case at two connecting places (28, 29) or (34, 35), - an angle trolley (17) is arranged movably on the track sections (15, 16) by means of a carriage (13) with at least three runner wheels (22, 23, 24), - the angle trolley (17) is equiped with a lifting mechanism (18) for a load-receiving element (19), characterized by the features : - both track sections (15, 16) are arranged on the tubular member (11) in such a manner that those surface normals (38, 39) of their track surfaces which pass through the connecting place (28, 34) which is located first in the force introduction direction, between the pertaining track section (15, 16) and the tubular member (11) at a point (36) which is located on the resultant force-action line (37) of the lifting mechanism (18) of the angle trolley (17), - the part-section (27, 33) of the track section (15, 16) which is located between the track surface (26, 31) and the first connecting place (28, 34) is arranged at least approximately centrally to the pertaining force-action line (38, 39).

Description

Zum Anheben und Umsetzen von Lasten und auch zu einer Beförderung in einem begrenzten Förderbereich werden Krane der unterschiedlichsten Art eingesetzt. Das können z.B. Laufkrane, Portalkrane, Konsolkrane, Säulenschwenkkrane und andere sein. Ihnen gemeinsam ist ein Kranträger, an dem an Laufbahnprofilen mittels eines Fahrwerks eine Laufkatze verfahrbar ist, die mit einem Hubwerk für das Lastaufnahmemittel ausgerüstet ist. Je nach dem konstruktiven Aufbau des Kranträgers und der Laufkatze ergeben sich bestimmte Beanspruchungen der Einzelteile und als Folge davon ein bestimmter Werkstoff- und Fertigungsaufwand für die Konstruktionsteile. Das gilt auch für Kranträger, die einen Rohrkörper aufweisen, und auch für solche Kranträger, die drei Rohrkörper aufweisen, von denen zwei als Untergurtträger und einer als Obergurtträger dienen, die zu einem Fachwerk miteinander verbunden und gegenseitig versteift sind. Bei Kranträgern, die innerhalb von Bauwerken wie Fabrikhallen, Lagerhallen und dergleichen eingesetzt sind, kommt noch hinzu, dass der Kranträger und die Laufkatze zusammen eine möglichst geringe Bauhöhe haben sollen.Cranes of various types are used to lift and transfer loads and also to transport them in a limited area. This can e.g. Overhead cranes, gantry cranes, console cranes, pillar jib cranes and others. What they have in common is a crane girder on which a trolley can be moved on running track profiles by means of a trolley, which trolley is equipped with a lifting mechanism for the load suspension device. Depending on the structural design of the crane girder and the trolley, there are certain stresses on the individual parts and, as a result, a certain amount of material and production costs for the structural parts. This also applies to crane girders that have a tubular body, and also to those crane girders that have three tubular bodies, two of which serve as lower chord girders and one as upper chord girder, which are connected to each other to form a framework and are mutually stiffened. In the case of crane girders which are used within structures such as factory halls, warehouses and the like, there is also the fact that the crane girder and the trolley should have the lowest possible overall height.

Ein Kranträger aus einem Rohrträger ist aus der DE-U-83 32 842 bekannt. Bei ihm sind am Rohrkörper zwei L-Profile oder zwei T-Profile als Laufbahnprofile angeschweisst. Die Laufbahnprofile sind entweder symmetrisch zur vertikalen Längsmittelebene des Rohrkörpers oder um 180° um die Längsachse des Rohrkörpers zueinander verschwenkt angeordnet. In beiden Fällen sind die Kraftwirkungslinien ihrer Laufbahnflächen parallel zueinander und damit auch parallel zur Kraftwirkungslinie des Hubwerkes und seines Lastaufnahmeelementes ausgerichtet. Vor allem bei der Verwendung einer Winkelkratze ergeben sich daraus beträchtliche Momentenkräfte an der Winkelkatze. Ausserdem sind die Laufbahnprofile am Rohrkörper so angeordnet, dass die Kraftwirkungslinie, die durch die Verbindungsstelle zwischen dem Laufbahnprofil und der Rohrwand hindurchgeht, die Rohrwand unter einem gewissen Winkel schneidet. Dadurch treten an den Verbindungsstellen Momentenkräfte in der Rohrwand auf, die eine zusätzliche Belastung der Rohrwand bedeuten, was eine entsprechend verstärkte Rohrwand erforderlich macht.A crane girder made of a tubular girder is known from DE-U-83 32 842. With him, two L-profiles or two T-profiles are welded onto the tubular body as raceway profiles. The raceway profiles are either arranged symmetrically to the vertical longitudinal center plane of the tubular body or pivoted relative to one another by 180 ° about the longitudinal axis of the tubular body. In both cases, the force lines of action of their raceway surfaces are aligned parallel to one another and thus also parallel to the force line of action of the lifting mechanism and its load-bearing element. Especially when using an angle scraper, this results in considerable moment forces on the angle trolley. In addition, the raceway profiles are arranged on the tube body in such a way that the line of action of force that passes through the connection point between the raceway profile and the tube wall intersects the tube wall at a certain angle. As a result, momentary forces occur in the pipe wall at the connection points, which mean an additional load on the pipe wall, which necessitates a correspondingly reinforced pipe wall.

Aus der DE-B-1 130 130 ist ein Kranträger in Form eines Kastenträgers mit einer Winkelkatze bekannt, deren beide Laufbahnprofile am Kastenträger so angeordnet sind, dass ihre Kraftwirkungslinien und diejenige des Hubwerkes einander in einem Punkt schneiden. Dabei sind aber die Laufbahnprofile an den Ecken des Kastenprofils angeordnet. Dafür ist an der oberen Ecke des Kastenprofils eine zusätzliche Lasteinleitungskonstruktion erforderlich. Zu ihr gehört, dass das eine Stegblech über den Obergurt hinaus hochgezogen ist. Auf den überstehenden Rand dieses Stegbleches ist als Laufbahn für die Winkelkatze ein schrägliegendes Blech aufgeschweisst, auf dem nochmals eine Führungsschiene aufgeschweisst ist. Das schrägliegende Blech kann nur auf der Aussenseite des Stegbleches mit diesem verschweisst werden. Dadurch entsteht eine hochbelastete Schweissnaht, die sehr sorgfältig ausgeführt und geprüft werden muss. Durch das aufgesetzte Schrägblech entsteht am Stegblech ein Fehlhebel für die Kraftwirkungslinie, die im Inneren des Kastenträgers die zusätzliche Anordnung von Beulsteifen und Schottblechen erfordert. Das macht die Gesamtkonstruktion schwer und teuer und damit unwirtschaftilich. Durch die Lastkräfte der Winkelkatze wird ausserdem das Stegblech an der Schweissstelle mit dem Obergurt auf Biegung beansprucht. Das ist eine Belastungsart, die für die Schweissnaht zwischen Stegblech und Obergurt sehr ungünstig ist. Deshalb muss auch diese Schweissnaht in einer besonderen Schweissqualität ausgeführt und als solche geprüft werden.From DE-B-1 130 130 a crane girder in the form of a box girder with an angular trolley is known, the two track profiles of which are arranged on the box girder in such a way that their lines of action and that of the hoist intersect at one point. However, the track profiles are arranged at the corners of the box profile. This requires an additional load introduction structure at the upper corner of the box section. It is part of her that the one web plate is pulled up beyond the top chord. On the protruding edge of this web plate, a sloping plate is welded as a track for the angular cat, on which a guide rail is welded again. The sloping plate can only be welded to the outside of the web plate. This creates a highly stressed weld, which must be carried out and checked very carefully. Due to the attached sloping plate, a false lever for the line of action occurs on the web plate, which requires the additional arrangement of buckling stiffeners and bulkhead plates inside the box girder. This makes the overall construction difficult and expensive and therefore uneconomical. Due to the load forces of the angular trolley, the web plate at the welding point with the top chord is also subjected to bending. This is a type of load that is very unfavorable for the weld seam between the web plate and the top flange. For this reason, this weld seam must also be of a special welding quality and tested as such.

Der Erfindung liegt die Aufgabe zugrunde, einen Kranträger mit Winkelkatze oder Laufkatze zu schaffen, bei dem bei möglichst geringer Bauhöhe und möglichst geringem Werkstoff- und Fertigungsaufwand eine möglichst geringe Beanspruchung der Einzelteile auftritt.The invention has for its object to provide a crane girder with angled trolley or trolley, in which the lowest possible stress on the individual parts occurs with the smallest possible height and the lowest possible material and manufacturing costs.

Diese Aufgabe wird durch einen Kranträger mit den im Anspruch 1 oder Anspruch 2 angegebenen Merkmalen gelöst.This object is achieved by a crane girder with the features specified in claim 1 or claim 2.

Dadurch, dass die Kraftwirkungslinien der Laufträger an der Winkelkatze oder Laufkatze und diejenige des Hubwerks einander in einem Punkt schneiden, wobei die Kraftwirkungslinien durch die Verbindungsstelle zwischen den Laufbahnprofilen und dem betreffenden Rohrkörper hindurchgehen, und dadurch, dass auch die Laufbahnprofile selbst nach diesen Kraftwirkungslinien ausgerichtet sind, ergibt sich insbesondere an dieser Verbindungsstelle eine Krafteinleitung vom Laufbahnprofil in den Rohrkörper, die weitgehend frei von Seitenkräften und/oder von Momenten ist. Dadurch und dadurch, dass die vom gemeinsamen Schnittpunkt der Kraftwirkungslinien aus durch die erste Verbindungsstelle zwischen dem Laufbahnprofil und der Rohrwand hindurchgehende Kraftwirkungslinie auf die Kreislinie in der Mitte zwischen der Aussenseite und der Innenseite der Rohrwand des Rohrkörpers gerichtet ist und diese Kreislinie tangiert, werden örtliche Krempelmomente des Rohrkörpers vermieden, die zu ihrer Aufnahme einen grösseren Rohrquerschnitt erfordern würden, damit die zulässigen Beanspruchungen an den kritischen Stellen nicht überschritten werden. Durch diesen Verlauf der Kraftwirkungslinien treten auch in der Winkelkatze oder Laufkatze verhältnismässig einfache Bealstungsfälle auf, die mit verhältnismässig geringem Werkstoff- und Fertigungsaufwand bei geringer Beanspruchung der Einzelteile beherrscht werden können.Characterized in that the lines of action of the running beams on the angular trolley or trolley and those of the hoist intersect at one point, the lines of force passing through the connection point between the track profiles and the relevant tubular body, and in that the track profiles themselves are aligned according to these lines of force , In particular at this junction there is an introduction of force from the track profile into the tubular body, which is largely free of lateral forces and / or moments. Due to the fact that the force action line passing from the common intersection of the force action lines through the first connection point between the raceway profile and the pipe wall is directed towards the circular line in the middle between the outside and the inside of the pipe wall of the pipe body and this circle affects, local carding moments become of the pipe body avoided, which would require a larger pipe cross-section to accommodate them, so that the permissible stresses at the critical points are not exceeded. As a result of this course of the lines of action of force, relatively simple cases of stress occur in the angular trolley or trolley, which can be managed with relatively little material and production expenditure and with low stress on the individual parts.

Bei dem Kranträger aus drei Rohrkörpern, von denen zwei als Untergurt und einer als Obergurt dienen, kann der Verlauf der Kraftwirkungslinien unter Beibehaltung dieser Grundregeln leicht an besondere Anforderungen angepasst werden, wobei auch die aufgrund der geometrischen Gestalt des gesamten Kranträgers auftretenden Belastungen in der Fachwerkkonstruktion mit den übrigen Beanspruchungen optimiert werden können.With the crane girder made of three tubular bodies, two of which serve as the lower chord and one as the upper chord, the course of the force action lines can be easily adapted to special requirements while maintaining these basic rules, the loads occurring in the framework construction due to the geometric shape of the entire crane girder can also be optimized with the other stresses.

Bei einer Ausgestaltung des Kranträgers nach Anspruch 3 wird eine sichere Seitenführung der Winkelkatze oder Laufkatze am Kranträger auch dann gewährleistet, wenn etwa grössere Fertigungstoleranzen hinsichtlich der Ausbildung und vor allem der Anordnung der Laufbahnprofile am Kranträger oder auch Fertigungstoleranzen hinsichtlich der Anordnung und Ausrichtung der Laufräder an der Winkelkatze oder Laufkatze auftreten oder wenn bei höheren Belastungen oder bei ungünstigen Belastungsrichtungen, wie beispielsweise bei einem sehr starken Seitenzug der Hubeinrichtung, stärkere elastische Verformungen an der Winkelkatze oder Laufkatze und/oder am Kranträger und dadurch bedingte Verlagerungen der Winkelkatze oder Laufkatze gegenüber den Laufbahnprofilen auftreten.In one embodiment of the crane girder according to claim 3, a safe lateral guidance of the angular trolley or trolley on the crane girder is also ensured if, for example, larger manufacturing tolerances with regard to the design and, in particular, the arrangement of the track profiles on the crane girder or manufacturing tolerances with regard to the arrangement and alignment of the running wheels on the Angled trolleys or trolleys occur or if, under higher loads or under unfavorable load directions, such as with a very strong side pull of the lifting device, greater elastic deformations on the angled trolley or trolley and / or on the crane girder and consequent displacements of the angled trolley or trolley with respect to the track profiles occur.

Im folgenden wird die Erfindung anhand zweier in den Zeichnungen dargestellter Ausführungsbeispiele näher erläutert. Es zeigen:

  • Fig. 1 Eine Stirnansicht eines Laufkrans mit einem Kranträger gemäss der Erfindung bei abgenommener Winkelkatze,
  • Fig. 2 eine in grösserem Massstab und teilweise geschnitten dargestellte Stirnansicht des Kranträgers von Fig. 1 mit zugehöriger Winkelkatze;
  • Fig. 3 eine Seitenansicht der Winkelkatze von Fig. 2;
  • Fig. 4 eine teilweise geschnitten dargestellte Stirnansicht einer anderen Ausführungsform eines Kranträgers gemäss der Erfindung mit zugehöriger Laufkatze.
The invention is explained in more detail below with reference to two exemplary embodiments shown in the drawings. Show it:
  • 1 is a front view of a traveling crane with a crane girder according to the invention with the angular trolley removed,
  • FIG. 2 shows a front view of the crane girder of FIG. 1 with the associated angular trolley on a larger scale and partially in section;
  • Fig. 3 is a side view of the angular cat of Fig. 2;
  • Fig. 4 is a partially sectioned front view of another embodiment of a crane girder according to the invention with an associated trolley.

Bei dem aus Fig. 1 bis 3 ersichtlichen Ausführungsbeispiel eines Laufkranes weist der Kranträger 10 einen Rohrkörper 11 auf, der an beiden Seiten mit je einer Endscheibe 12 verschweisst ist. Über diese Endscheiben 12 ist der Kranträger 10 mittels im einzelnen nicht dargestellter Schubknaggen und Schrauben mit je einem Kranfahrwerk 13 mit je einem Paar Laufräder 14 verbunden. Am Rohrkörper 11 sind in seiner Längsrichtung zwei Laufbahnprofile 15 und 16 angeschweisst. Sie dienen der Führung einer Winkelkatze 17, die mit einem Hubwerk 18 für ein Lastaufnahmemittel, beispielsweise in Form eines Lasthakens 19, ausgerüstet ist.In the embodiment of a traveling crane shown in FIGS. 1 to 3, the crane girder 10 has a tubular body 11, which is welded to both sides with an end plate 12 each. The crane girder 10 is connected via these end disks 12 by means of push knobs and screws (not shown in detail), each with a crane trolley 13, each with a pair of running wheels 14. Two raceway profiles 15 and 16 are welded to the tubular body 11 in its longitudinal direction. They are used to guide an angular trolley 17, which is equipped with a lifting mechanism 18 for a load suspension device, for example in the form of a load hook 19.

Die Winkelkatze 17 hat ein Fahrwerk 21 mit drei Laufrädern 22...24. Die beiden Laufräder 22 und 23 sind auf der einen Seite des Fahrwerks 21 und das dritte Laufrad 24 an der anderen Seite des Fahrwerks 21 in Bezug auf die Mittelebene des Rohrkörpers 11 angeordnet. Mit dem einen Laufrad 23 ist der Fahrantrieb 25 der Winkelkatze gekoppelt. Je nach den Anforderungen an die Winkelkatze 17 können auf jeder Seite zwei Laufräder angeordnet sein. Ebenso können auch zwei Fahrantriebe vorhanden sein, die entweder auf der gleichen Seite der Winkelkatze mit den dort vorhandenen Laufrädern gekoppelt sind oder die auf verschiedenen Seiten der Winkelkatze mit je einem der dort vorhandenen Laufräder gekoppelt sind.The angular trolley 17 has a trolley 21 with three running wheels 22 ... 24. The two impellers 22 and 23 are arranged on one side of the undercarriage 21 and the third impeller 24 on the other side of the undercarriage 21 with respect to the central plane of the tubular body 11. The drive 25 of the angular trolley is coupled to the one impeller 23. Depending on the requirements for the angular trolley 17, two running wheels can be arranged on each side. Likewise, two travel drives can also be present, which are either coupled on the same side of the angular trolley to the running wheels there or which are coupled on different sides of the angular trolley to each of the running wheels present there.

Wie aus Fig. 2 ersichtlich ist, wird das Laufbahnprofil 15 durch einen Profilstahlabschnitt mit L-förmigem Querschnitt gebildet. Der in Fig. 2 lotrecht ausgerichtete Profilteil oder Schenkel 26 des L-Profils dient dem kreiszyklindrischen Laufrad 24 als Laufbahn. Seine Laufbahnfläche ist eben. Der in Fig. 2 waagerecht und zugleich zumindest annähernd tangential zur Rohrwand des Rohrkörpers 11 ausgerichtete Profilteil oder Schenkel 27 des L-Profils und seine als Schweissnaht ausgeführte Verbindungsstelle 28 zwischen ihm und dem Rohrkörper 11 dient der Lasteinleitung von der Laufrolle 24 auf den Rohrkörper 11. Die zweite Verbindungsstelle 29 zwischen dem Profilteil 26 und dem Rohrkörper 11 ist ebenfalls als Schweissnaht ausgeführt. Das Laufbahnprofil 16 wird ebenfalls durch einen Profilstahlabschnitt mit L-förmigen Querschnitt gebildet. Auf seinem schräg geneigten Profilteil 31 ist zusätzlich eine Schiene 32 aufgeschweisst, deren ebene Oberseite die eigentliche Laufbahnfläche für die Laufräder 22 und 23 bildet. Die beiden daran anschliessenden Seitenflächen der Schiene 32 dienen im Bedarfsfalle der seitlichen Führung der beiden Laufräder 22 und 23. Sie sind dafür auf beiden Stirnseiten mit einem entsprechenden Spurführungsmittel in Form von je einem Spurkranz versehen, deren lichter Abstand grösser als die Breite der Schiene 32 ist, wobei in der normalen Betriebsstellung der Winkelkatze 17 jeder der Spurkränze einen gewissen lichten Abstand von der Schiene 32 hat. Lediglich bei grösseren Fertigungstoleranzen und/oder bei grösserem Seitenzug des Lasthakens 19 soll die Seitenführung durch die Spurkränze und die Schiene 32 als Sicherung wirksam werden. Anstelle der Spurkränze können auch Spurführungsrollen eingesetzt werden. Der unterhalb der Schiene 32 gelegene und wiederum zumindest annähernd tangential zur Rohrwand des Rohrkörpers 11 ausgerichtete Profilteil 33 und seine als Schweissnaht ausgeführte Verbindungsstelle 34 zwischen ihm und dem Rohrkörper 11 dient der Lasteinleitung von den Laufrollen 22 und 23 in den Rohrkörper 11. Über die zweite Verbindungsstelle des Laufbahnprofils 16 zwischen seinem Profilteil 31 und dem Rohrkörper 11 werden etwa auftretende Seitenführungskräfte der Laufräder 22 und 23 auf den Rohrkörper 11 übertragen.As can be seen from Fig. 2, the raceway profile 15 is formed by a section steel section with an L-shaped cross section. The vertically oriented profile part or leg 26 of the L-profile in FIG. 2 serves the circular-cyclic impeller 24 as a raceway. His career area is flat. The horizontal or at least approximately tangential to the tubular wall of the tubular body 11 in FIG. 2, the profile part or leg 27 of the L-profile and its welded joint 28 between it and the tubular body 11 is used to transfer the load from the roller 24 to the tubular body 11. The second connection point 29 between the profile part 26 and the tubular body 11 is also designed as a weld seam. The track profile 16 is also formed by a section steel section with an L-shaped cross section. On its obliquely inclined profile part 31, a rail 32 is additionally welded, the flat top of which forms the actual raceway surface for the wheels 22 and 23. The two adjoining side surfaces of the rail 32 serve, if necessary, to guide the two wheels 22 and 23 laterally. For this purpose, they are provided on both end faces with a corresponding tracking means in the form of a wheel flange, the clear distance between which is greater than the width of the rail 32 , wherein in the normal operating position of the angular trolley 17, each of the flanges has a certain clear distance from the rail 32. Only in the case of larger manufacturing tolerances and / or in the event of a larger side pull of the load hook 19 should the lateral guidance by the wheel flanges and the rail 32 act as a securing means. Instead of the wheel flanges, track guidance rollers can also be used. The profile part 33 located below the rail 32 and again oriented at least approximately tangentially to the tube wall of the tube body 11 and its connection point 34 designed as a weld seam between it and the tube body 11 is used to transfer the load from the rollers 22 and 23 into the tube body 11. Via the second connection point of the raceway profile 16 between its profile part 31 and the tubular body 11 any cornering forces of the impellers 22 and 23 that occur are transmitted to the tubular body 11.

Die Laufbahnprofile 15 und 16 sind am Rohrkörper 11 so angeordnet und ausgerichtet, dass diejenige Flächennormale ihrer Laufbahnfläche, die durch die erste Verbindungsstelle 28 bzw. 34 hindurchgeht, sich in einem Punkt 36 schneiden, der zumindest annähernd auf der resultierenden Kraftwirkungslinie 37 des Hubwerks 18 gelegen ist. Die Laufbahnprofile 15 und 16 sind weiterhin so angeordnet und ausgerichtet, dass diese durch den gemeinsamen Schnittpunkt 33 hindurchgehenden Kraftwirkungslinien 38 und 39 des Laufrades 24 bzw. der Laufräder 22 und 23 von der Verbindungsstelle 28 bzw. 34 aus die Mittellinie, d.h. die Kreislinie in der Mitte zwischen der Aussenseite und der Innenseite, der Rohrwand des Rohrkörpers 11 tangiert. Darüber hinaus sind der Profilteil 27 des Laufbahnprofils 15 und der Profilteil 33 des Laufbahnprofils 16 zumindest annähernd symmetrisch und damit mittig in Bezug auf die zugehörige Kraftwirkungslinie 38 oder 39 angeordnet. An der Winkelkatze 17 sind die beiden Laufräder 22 und 23 und das eine Laufrad 24 am Fahrwerk 21 so angeordnet, dass im normalen Betriebszustand ihre Mittelebene, das ist im allgemeinen die Symmetrieebene ihres Aufrisses, zumindest annähernd mit der zugehörigen Kraftwirkungslinie 39 bzw. 38 fluchten. Dadurch ist gewährleistet, dass die Krafteinleitung vom Hubwerk 18 in den Rohrkörper 11 in der Symmetrieebene der Profilteile 27 und 33 durch die Verbindungsstelle 28 bzw. 34 hindurch tangential auf die Rohrwand des Rohrkörpers 11 erfolgt, so dass an der Verbindungsstelle praktisch keine Krempelmomente wirken, die eine Beulwirkung auf die Rohrwand des Rohrkörpers 11 ausüben könnten. Auch die übrigen Teile des Fahrwerks 21 sind dadurch einfachen Belastungsfällen ausgesetzt, die leicht zu erfassen sind und die sich durch entsprechend einfache Konstruktionen mit verhältnismässig geringem Werkstoffaufwand unter Einhaltung der zulässigen Beanspruchungen der Konstruktionsteile zuverlässig aufnehmen lassen. Daneben hat die Einhaltung dieser Regeln zusammen mit dem Rohrkörper 11 eine denkbar geringe Bauhöhe hat, wie aus Fig. 2 ohne weiteres hervorgeht, die im allgemeinen geringer ist als die vergleichbarer herkömmlicher Krane.The raceway profiles 15 and 16 are arranged and aligned on the tubular body 11 such that the surface normal of their raceway surface which passes through the first connection point 28 or 34 intersect at a point 36 which is at least approximately on the resulting force action line 37 of the lifting mechanism 18 is. The raceway profiles 15 and 16 are further arranged and aligned such that these force action lines 38 and 39 of the impeller 24 and the impellers 22 and 23 passing through the common intersection 33 from the connection point 28 and 34, respectively, from the center line, ie the circular line in the Middle between the out senseite and the inside, the pipe wall of the tubular body 11 tangent. In addition, the profile part 27 of the track profile 15 and the profile part 33 of the track profile 16 are arranged at least approximately symmetrically and thus centrally with respect to the associated force action line 38 or 39. On the angular trolley 17, the two running wheels 22 and 23 and the one running wheel 24 on the undercarriage 21 are arranged such that their normal plane, that is generally the plane of symmetry of their elevation, is at least approximately aligned with the associated force action line 39 and 38, respectively, in the normal operating state. This ensures that the force is introduced from the lifting mechanism 18 into the tubular body 11 in the plane of symmetry of the profile parts 27 and 33 through the connection point 28 and 34 tangentially onto the tube wall of the tubular body 11, so that practically no carding moments act at the connecting point could have a buckling effect on the tube wall of the tube body 11. The other parts of the undercarriage 21 are therefore also exposed to simple load cases which are easy to grasp and which can be reliably accommodated by correspondingly simple constructions with relatively little material expenditure while observing the permissible stresses on the construction parts. In addition, compliance with these rules together with the tubular body 11 has a conceivably low overall height, as is readily apparent from FIG. 2, which is generally lower than that of comparable conventional cranes.

Bei der aus Fig. 4 ersichtlichen Ausführungsform weist der Kranträger 40 drei Rohrkörper 41...43 auf, von denen die beiden Rohrträger 41 und 42 in der Waagereichten nebeneinander angeordnet sind und Untergurtträger bilden, wohingehen der Rohrkörper 43 in einem gewissen Abstand darüber angerodnet ist und als Obergurtträger wirkt. Die drei Rohrkörper 41... 43 sind durch ein Fachwerk 44 in herkömmlicher Ausbildung miteinander zu dem Kranträger 40 vereinigt und dadurch auch gegenseitig versteift.In the embodiment shown in FIG. 4, the crane girder 40 has three tubular bodies 41 ... 43, of which the two tubular girders 41 and 42 are arranged next to one another in the horizontal direction and form lower chord supports, whereas the tubular body 43 is arranged at a certain distance above it and acts as a top belt carrier. The three tubular bodies 41 ... 43 are combined by a truss 44 in a conventional design to form the crane girder 40 and thereby also stiffened against one another.

An diesem Kranträger 40 ist eine Laufkatze 45 mit etwa wannenförmigem Aufriss angeordnet. Ihr Fahrwerk 46 weist einen Mittelteil 47 und je ein Seitenteil 48 und 49 auf. Am Mittelteil 47 ist das Hubwerk 51 mit einem Lastaufnahmeelement in Form eines Hakens 52 befestigt.A trolley 45 with an approximately trough-shaped elevation is arranged on this crane girder 40. Your undercarriage 46 has a central part 47 and a side part 48 and 49 each. The lifting mechanism 51 is fastened to the central part 47 with a load-bearing element in the form of a hook 52.

An der voneinander abgekehrten Aussenseite der beiden Untergurtträger 41 und 42 ist je ein Laufbahnprofil 53 bzw. 54 angeschweisst. Die beiden Laufbahnprofile 53 und 54 haben je einen T-förmigen Querschnitt. Die Oberseite des Flanschteils des T-Profils bildet die Laufbahnfläche für die Laufräder 55 bzw. 56 die an den Seitenteilen des Fahrwerks 46 der Laufkatze 45 gelagert sind. Der Stegteil 57 bzw. 58 des T-Profils dient der Krafteinleitung in den zugehörigen Untergurtträger 41 bzw. 42. Diese Stegteile oder Profilteile sind wiederum zumindest annähernd tangential zur Rohrwand des zugehörigen Untergurtträgers 41 bzw. 42 ausgerichtet und an der in ihrer Fluchtlinie gelegenen Verbindungsstelle 59 bzw. 60 mit dem Untergurtträger 41 bzw. 42 verschweisst. Jeweils eine zweite Verbindungsstelle 61 bzw. 62 ist zwischen dem Untergurtträger 41 und 42 und dem ihm zugekehrten Flansch-Profilteil des Laufbahnprofils 53 bzw. 54 vorhanden. Die auf diesen Profilteilen verfahrbaren Laufräder 55 und 56 fluchten mit ihrer Mittelebene zumindest annähernd mit der Symmetrieebene der Profilteile 57 und 58. Diese resultierende Kraftwirkungslinie 63 bzw. 64 der Laufräder 55 und 56 schneiden sich in einem Punkt 65 der wiederum zumindest annähernd auf der resultierenden Kraftwirkungslinie 66 des Hubwerks 51 und seines Lastaufnahmeelementes 52 gelegen ist. Dieser gemeinsame Schnittpunkt 65 wird im allgemeinen in der Aufriss-Symmetriebene der Laufkatze 45 und des Kranträgers 40 liegen. Er kann aber auch ausserhalb der Symmetrieebene des Kranträgers 40 liegen, wenn nur die zuvor genannten Grundregeln über die Anordnung und Ausrichtung der Laufbahnprofile 53 und 54 und der damit zusammenwirkenden Teile des Kranträgers 40 und der Laufkatze 45 eingehalten werden.A raceway profile 53 or 54 is welded to the outer side of the two lower belt supports 41 and 42 facing away from each other. The two raceway profiles 53 and 54 each have a T-shaped cross section. The top of the flange part of the T-profile forms the raceway surface for the wheels 55 and 56, which are mounted on the side parts of the chassis 46 of the trolley 45. The web part 57 or 58 of the T-profile is used to introduce force into the associated lower chord support 41 or 42. These web parts or profile parts are in turn aligned at least approximately tangentially to the tube wall of the associated lower chord support 41 or 42 and at the connection point 59 located in their alignment line or 60 welded to the lower flange 41 or 42. In each case a second connection point 61 or 62 is present between the lower flange support 41 and 42 and the flange profile part of the track profile 53 or 54 facing it. The wheels 55 and 56 which can be moved on these profile parts are at least approximately in alignment with their central plane with the plane of symmetry of the profile parts 57 and 58. This resulting line of action 63 and 64 of the wheels 55 and 56 intersect at a point 65 which in turn is at least approximately on the resulting line of action 66 of the hoist 51 and its load-bearing element 52 is located. This common intersection 65 will generally lie in the elevation symmetry plane of the trolley 45 and the crane girder 40. However, it can also lie outside the plane of symmetry of the crane girder 40 if only the aforementioned basic rules regarding the arrangement and alignment of the track profiles 53 and 54 and the parts of the crane girder 40 and the trolley 45 interacting therewith are observed.

An den Seitenteilen 48 und 49 der Laufkatze 45 sind Spurführungsrollen 67 bzw. 68 angeordnet. Sie bilden eine zusätzliche Führung der Laufkatze 45 gegenüber den Laufbahnprofilen 53 und 54. Zwischen diesen Spurführungsrollen 67 und 68 und dem zugehörigen Laufbahnprofil 53 bzw. 54 ist ein in Fig. 4 nicht erkennbarer Abstand eingehalten. Dieser ist so gross, dass bei normalen Belastungsfällen der Laufkatze 45 die Spurführungsrollen 67 und 68 an den Laufbahnprofilen nicht anliegen. Er ist umgekehrt aber so klein, dass beispielsweise bei einem stärkeren Seitenzug der Hubvorrichtung 51 die Laufkatze 45 und ihre Laufräder 55 und 56 nicht allzu weit von ihrer normalen Betriebsstellung abweichen können.Tracking rollers 67 and 68 are arranged on the side parts 48 and 49 of the trolley 45. They form an additional guide for the trolley 45 with respect to the track profiles 53 and 54. A distance which cannot be seen in FIG. 4 is maintained between these track guide rollers 67 and 68 and the associated track profile 53 and 54. This is so large that the track rollers 67 and 68 do not abut the track profiles in normal loading cases of the trolley 45. Conversely, it is so small that, for example, with a stronger side pull of the lifting device 51, the trolley 45 and its wheels 55 and 56 cannot deviate too far from their normal operating position.

Die Laufräder 55 und 56 können zu beiden Seiten der Laufkatze 45 paarweise angeordnet sein. Sie können jedoch auch, wie bei der Winkelkatze 17, auf der einen Seite paarweise und auf der anderen Seite in der Einzahl angeordnet sein, wobei das einzelne Laufrad dann zumindest annähernd in der Mitte zwischen den beiden paarig angeordneten anderen Laufrädern angeordnet sein sollte. Der Fahrantrieb 69 für die Laufkatze 45 ist entweder mit einem Laufrad gekoppelt oder es sind zwei Fahrantriebe vorhanden die entweder mit je einem der Laufräder auf der einen Seite oder mit je einem Laufrad auf jeder der beiden Seiten der Laufkatze 45 gekoppelt sind.The wheels 55 and 56 can be arranged in pairs on both sides of the trolley 45. However, as with the angular trolley 17, they can also be arranged in pairs on one side and in the singular number on the other side, the individual impeller then being arranged at least approximately in the middle between the two other impellers arranged in pairs. The traction drive 69 for the trolley 45 is either coupled to an impeller or there are two traction drives which are either coupled to one of the impellers on one side or to an impeller on each of the two sides of the trolley 45.

Claims (3)

1. Crane girder with the features:
- it has a tubular member (11) of annular cross-section,
- at least two track sections (15, 16) are welded onto the tubular member (11) in its longitudinal direction, in each case at two connecting places (28, 29) or (34, 35),
- an angle trolley (17) is arranged movably on the track sections (15, 16) by means of a carriage (13) with at least three runner wheels (22, 23, 24),
- the angle trolley (17) is equipped with a lifting mechanism (18) for a load-receiving element (19),

characterised by the features:
- both track sections (15, 16) are arranged on the tubular member (11) in such a manner that those surface normals (38, 39) of their track surfaces which pass through the connecting place (28, 34) which is located first in the force introduction direction, between the pertaining track section (15,16) and the tubular member (11), intersect outside the tubular member (11) at a point (36) which is located on the resultant force-action line (37) of the lifting mechanism (18) of the angle trolley (17),
- the part-section (27, 33) of the track section (15, 16) which is located between the track surface (26, 31) and the first connecting place (28, 34) is arranged at least approximately centrally to the pertaining force-action line (38, 39).
- each of the track sections (15, 16) is so constructed and is so arranged on the tubular member (11), that the force-action line (38, 39) which starts from the common intersection point (36) of the force-action lines (37, 38, 39) and passes through the first connecting place (28, 34), is tangential to the circular line in the middle between the outside and the inside of the tubular wall of the tubular member (11 ),
- the runner wheels (22...24) of the carriage (21 ) are so arranged on the angle trolley (17) that their median plane is at least approximately in alignment with the force-action line (38, 39).
2. Crane girder with the features:
- it has three tubular members (41...43) of annular cross section,
- whereof two tubular members (41, 42) are arranged horizontally adjacent to one another, as lower flange carriers, and
- whereof the third tubular member (43) is arranged thereover as an upper flange carrier,
- the three tubular members (41...43) are interconnected so as to form a framework (44) and are mutually reinforced,
- in each case a track section (53) or (54) is welded onto one of each of the two lower flange carriers (41, 42), in the longitudinal direction thereof, on the side facing away from one another in each case, at two connecting places (59, 61 ) or (60, 62) in each case,
- a travelling trolley (45) is arranged movably on the two track sections (53, 54) by means of a carriage (46) with at least three runner wheels (55,56),
- the travelling trolley (45) is equipped with a lifting mechanism (51 ) for a load-reaceiving element (52),

characterised by the features:
- each of the two track profiles (53, 54) is arranged on the pertaining lower flange carrier (41, 42) in such a manner that those surface normals (63, 64) of its track surfaces which pass through the connecting place (59, 60) which is located first in the force introduction direction, between the track section (53, 54) and the pertaining lower flange carrier (41, 42), intersect outside the two lower flange carriers (41, 42) at a point (65) which is located on the resultant force-action line (66) of the lifting mechanism (51 ) of the travelling trolley (45),
- the part-section (57, 58) of the track section (53, 54) which is located between the track surface and the first connecting place (59, 60) is arranged at least approximately centrally to this force-action line (63, 64),
- each of the two track sections (53, 54) is so constructed and is so arranged on the pertaining lower flange carrier (41, 42) that the force-action line (63, 64) which starts from the common intersection point (65) of the force-action lines (63, 64) and passes through the first connecting place (59, 60) is tangential to the circular line in the middle between the outside and the inside of the tubular wall of the pertaining lower flange carrier (41,42),
- the runner wheels (55, 56) of the carriage (46) are so arranged on the travelling trolley (45) that their median plane is at least approximately in alignment with the pertaining force-action line (63,64).
3. Crane girder according to claim 1 or 2, characterised by the features:
- track guide means are present between the angle trolley (17) or the travelling trolley (45) and the tubular member (11, 41, 42),
- they are preferably constituted by wheel flanges on at least one of the runner wheels (22, 23) of the angle trolley (17) or of the travelling trolley, and by guide rails (32) with lateral guide surfaces on the tubular member (11), or
- by track guide rollers (67, 68) which are mounted rotatably on the angle trolley or travelling trolley (45), and by guide surfaces on the tubular member or on a part connected thereto, in particular on the track sections (53, 54).
EP86103093A 1985-03-12 1986-03-07 Crane girder Expired EP0194615B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103093T ATE44016T1 (en) 1985-03-12 1986-03-07 CRANE BEAM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3508749 1985-03-12
DE19853508749 DE3508749A1 (en) 1985-03-12 1985-03-12 CRANE CARRIERS

Publications (2)

Publication Number Publication Date
EP0194615A1 EP0194615A1 (en) 1986-09-17
EP0194615B1 true EP0194615B1 (en) 1989-06-14

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EP86103093A Expired EP0194615B1 (en) 1985-03-12 1986-03-07 Crane girder

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JP (1) JPS61263595A (en)
AT (1) ATE44016T1 (en)
DE (1) DE3508749A1 (en)

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RU2240275C2 (en) * 2000-07-19 2004-11-20 Пензенская государственная архитектурно-строительная академия Rail-and-beam structure
RU2191154C2 (en) * 2000-07-19 2002-10-20 Пензенская государственная архитектурно-строительная академия Rail-and-beam structure
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Publication number Publication date
EP0194615A1 (en) 1986-09-17
ATE44016T1 (en) 1989-06-15
JPS61263595A (en) 1986-11-21
DE3508749A1 (en) 1986-09-18

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