EP0412519A1 - Tower crane - Google Patents

Tower crane Download PDF

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Publication number
EP0412519A1
EP0412519A1 EP90115197A EP90115197A EP0412519A1 EP 0412519 A1 EP0412519 A1 EP 0412519A1 EP 90115197 A EP90115197 A EP 90115197A EP 90115197 A EP90115197 A EP 90115197A EP 0412519 A1 EP0412519 A1 EP 0412519A1
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EP
European Patent Office
Prior art keywords
elements
tower
tower crane
longitudinal bars
frame
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Granted
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EP90115197A
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German (de)
French (fr)
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EP0412519B1 (en
Inventor
Gerhard Prof. Dr.-Ing. Wagner
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MAN GHH Logistics GmbH
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MAN GHH Logistics GmbH
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    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/28—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
    • B66C23/283—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements

Definitions

  • the invention relates to a tower crane, the tower frame of which is composed of a plurality of tower elements arranged one above the other, releasably connected to one another, each of which has an approximately equilateral polygonal cross section and consists of vertical longitudinal bars and transverse or / and diagonal bars running transversely thereto.
  • the tower frame of conventional tower cranes consists of tower elements arranged one above the other, each of which is designed as a spatial frame with a polygonal cross section.
  • the spatial frame of each tower element has vertical longitudinal bars arranged in the polygon corners, which are firmly welded to the longitudinal bars of the adjacent polygon corners via transverse and / or diagonal bars.
  • the opposite ends of the longitudinal bars of tower elements arranged one above the other are operatively releasably connected to one another by screwing or bolting.
  • the tower elements of conventional tower cranes require comparatively high production costs. Since the relatively large spatial frame of the tower elements may only have relatively small tolerances, great gauges are required for the assembly, and the coupling elements arranged on the spatial frame for the connection of the tower elements must be machined with narrow tolerances. In addition, the weld seams are in three-dimensional space and are difficult to access for welding machines. The large dimensions of the tower elements make transportation much more difficult.
  • the tower elements consist of several, separate, flat frame elements, each with at least two longitudinal bars and that the longitudinal bars of adjacent frame elements in pairs in the area of the polygon corners which run and are connected with their ends to an intermediate element arranged between adjacent tower elements and common to the frame elements, but are detachably connected.
  • the tower elements of such a tower crane are thus operationally broken down into flat, rigid frame elements and are only connected to a spatial frame when the tower crane is erected by the connection with the intermediate elements arranged between the tower elements.
  • the flat frame elements can be manufactured more easily, since smaller assembly gauges which can be adjusted in the plane could be used and the longitudinal bars, cross bars and diagonal bars of the flat frame elements can also be welded without problems in automatic welding machines.
  • the longitudinal bars run in pairs in the polygon corners, this does not double the weight and the cost of materials, since the wall thickness of the vertical longitudinal bars designed as profile bars or tubes can be reduced. The effort required to weld the crossbars and diagonal bars is not increased compared to conventional tower cranes.
  • the longitudinal bars running next to one another in the region of the polygon corners are arranged mirror-symmetrically to the sectional plane bisecting the intermediate angle between adjacent frame elements. This configuration is comparatively stiff, since the vertical longitudinal bars can be arranged comparatively far outside in relation to the cost of materials.
  • a point-symmetrical variant lies in each case one of the two longitudinal bars of adjacent frame elements running next to one another in the region of the polygon corner in the plane of the frame element of the respective other longitudinal bar.
  • matching tower cross sections can be achieved with conventional tower cranes, so that existing, conventional climbing mechanisms can be used for the assembly of the crane.
  • the intermediate element should absorb torsional forces of the individual longitudinal bars on the one hand, but also torsional forces of the entire tower frame. It is expediently designed as a plate, disc or flat frame. Such intermediate elements are so flat that they can be easily connected to the longitudinal rods using the coupling elements provided anyway for the torsionally rigid connection of longitudinal rods arranged one above the other.
  • the coupling elements can be pins with a form-fitting profile, for example a square profile, which can be inserted into corresponding openings in the longitudinal bars and locked there, for example by means of bolt connections.
  • the pin can be attached to the intermediate elements in a torsionally rigid manner, for example welded on, and can engage on both sides of the intermediate element in the complementarily shaped interior of the longitudinal rods designed as tubular profiles. It goes without saying that the pin can be divided and welded to the intermediate element on both sides, or else can be continuous and penetrate the intermediate element. In a variant, the pin can also only protrude from one of the two adjacent ends of longitudinal rods arranged one above the other and for torsionally rigid coupling through a complementary opening of the intermediate element into a likewise complementary opening in the end of the intervene adjacent longitudinal bar.
  • tabs can be provided on the adjacent ends of the longitudinal rods, by means of which at least two screw bolts arranged next to one another are screwed together through the intermediate element.
  • any internals in the tower frame are connected to one another by simple plug connections or the like.
  • the intermediate elements can have access openings, and the tower elements are each assigned to conductors which are loosely suspended at their upper ends via a hook connection, with a plug-in coupling part being expediently provided for fixing the lower end of the conductor, which part has a complementary coupling part at the upper end of the one below Head interacts.
  • At least one of the intermediate elements can be designed as an adapter for connecting a structural unit of the crane to the tower element formed by the flat frame elements. This not only facilitates the connection of the lowest tower element to the crane base, but also the connection of the boom pivot bearing, etc.
  • the adapter also enables transitions to conventional, i.e. Tower elements designed as a spatial frame, so that tower elements according to the invention can optionally be used in the exchange of conventional tower elements in existing conventional tower cranes.
  • the tower elements 1 show a section of a tower frame of a tower crane which is composed of tower elements 1 arranged one above the other.
  • the tower elements 1 are formed by flat frame elements 3, which are arranged in vertical planes corresponding to an equilateral polygon, here a square.
  • Each frame element 3 has two longitudinal bars 5 arranged in the region of the polygon corners, which are connected by horizontally running transverse bars 7 and diagonally extending diagonal bars 9.
  • the rods 5, 7 and 9 are rigidly welded together.
  • the longitudinal bars 5 of adjacent frame elements 3 run parallel next to one another in the region of the polygon corners and are connected with their ends in a torsionally rigid manner to intermediate elements 11, which are each arranged between two tower elements 3 arranged one above the other for absorbing transverse shear forces of the tower frame.
  • the one another Adjacent ends of longitudinal rods 5 arranged one above the other are also coupled to one another in a manner which is explained in more detail below in a manner resistant to pulling and shearing.
  • the connection of the frame elements 3 to one another and to the intermediate element 11 is designed to be detachable for the assembly and disassembly of the crane.
  • the longitudinal bars 5 are connected to one another in the transverse direction only in the region of their ends via the intermediate elements 11.
  • the tower frame is assembled at the installation location from flat roof elements and flat intermediate elements 11, in particular in the form of a disc or flat frame.
  • the flat frame elements 3 only have a comparatively small transport volume and can also be welded together using comparatively simple gauges with narrow tolerances by means of welding robots or the like.
  • the number of vertical longitudinal bars is doubled compared to conventional tower elements, the cost of materials does not increase twice, since the wall thickness of the longitudinal bars 5 can be reduced for a desired strength. Since longitudinal bars arranged one above the other are coupled only in the area of their ends, the assembly effort of the crane increases only insignificantly.
  • Fig. 3 shows a variant of the polygonal arrangement of the frame elements 3, in which one of the two longitudinal bars 5 running side by side in the area of the polygon corner lies in the plane of the frame element of the respective other longitudinal bar 5.
  • the cross section of the tower element 3 corresponds to that of conventional tower elements, so that existing climbing works can be used for the assembly of the crane.
  • FIG. 4 shows an embodiment of the torsionally rigid coupling connection between longitudinal bars 5 arranged one above the other and the intermediate element 11.
  • a coupling pin 15 is seated in an opening 14 of the intermediate element 11.
  • the coupling pin 15 is welded to the intermediate element 11 and projects on both sides of the intermediate element 11 with pin sections 17 .
  • the longitudinal bars 5, which are expediently profiled tubes, have complementary openings 19 at the mutually facing ends and are plugged onto the pin sections 17.
  • Cross bolts 21 ensure a torsionally rigid and both tensile and shear-resistant connection of the longitudinal bars 5 to one another and to the intermediate element 11.
  • the pin sections 17 and the openings 19 can have a positive-locking profile, for example a square profile.
  • the pin sections 17 do not have to be connected to one another in one piece. They can also be manufactured separately from one another and welded onto opposite sides of the intermediate element.
  • FIG. 5 shows a variant in which several, here two, screw tabs 23 are welded to the ends of longitudinal rods 5 which are arranged one above the other.
  • the screw tabs 23 of the longitudinal rods 5 are aligned in pairs opposite each other and take screw bolts 25 through the fitting holes 27 of the Intermediate element 11 occur and connect the longitudinal rods 5 arranged one above the other in a torsionally rigid manner as well as in a tensile and shear-resistant manner to one another and also torsionally rigid with the intermediate element 11.
  • FIG. 6 shows a variant of the coupling connection from FIG. 4, in which a pin 28 is welded to the end of one of the two longitudinal rods 5, preferably the upper end of the respective lower longitudinal rod 5, which extends through a fitting opening 29 of the intermediate element 11 engages in a complementary opening 31 of the other, here the upper longitudinal rod 5.
  • a transversely running locking bolt 33 connects the two longitudinal rods 5 to one another in a tensile and shear-resistant manner and also torsionally rigid.
  • the pin 28 has a cross-sectional shape and connects the two longitudinal bars 5 to the intermediate element 11 in a torsionally rigid manner via the precisely fitting opening 29.
  • the intermediate elements 11 have access openings 35 for the ascent in the tower frame.
  • a conductor provided for this purpose (FIG. 7) consists of conductor segments 37 with a length adapted to the longitudinal bars 5.
  • the conductor segments 37 have hooks 39 at their upper end, with which they are suspended from the intermediate elements 11.
  • the conductor segments 37 are coupled via plug-in couplings 41 to the upper end of the conductor segment 37 arranged below them.
  • a ladder of this type can also be quickly assembled and disassembled without a screw connection.
  • a variant of an intermediate element which is only set up on one of its sides for the torsionally rigid connection with longitudinal bars of frame elements 3, is not shown.
  • the intermediate element is adapted to other functions or constructions, so that it can be used as an end piece or as an adapter for connection to tower elements and / or other construction units of conventional cranes.
  • such adapters for connecting conventional i.e. be used as a spatial frame with tower elements equipped with only one longitudinal bar per polygon corner. In this way, conventional cranes can be retrofitted with the tower elements explained above.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The tower crane has a tower frame composed of several tower elements (1) arranged one above the other and detachably connected to one another. The tower elements (1) have a roughly equilateral polygonal cross-section and consist of vertical longitudinal members (5) and cross and/or diagonal members (7, 9) running transversely thereto. The tower elements (1) consist of several, separate, flat frame elements with in each case at least two longitudinal members (5). The longitudinal members of adjacent frame elements (3) run in pairs next to one another in the area of the polygon corners and are each attached with their ends in a torsionally rigid but detachable manner to an intermediate element (11) arranged between adjacent tower elements (1) and common to the frame elements (3). Tower elements of this type are simpler to manufacture and take up less space during transport. <IMAGE>

Description

Die Erfindung betrifft einen Turmdrehkran, dessen Turmrahmen aus mehreren übereinander angeordneten, lösbar miteinander verbundenen Turmelementen zusammen­gesetzt ist, von denen jedes einen etwa gleichseitig polygonalen Querschnitt hat und aus vertikalen Längs­stäben und quer dazu verlaufenden Quer- oder/und Diago­nalstäben besteht.The invention relates to a tower crane, the tower frame of which is composed of a plurality of tower elements arranged one above the other, releasably connected to one another, each of which has an approximately equilateral polygonal cross section and consists of vertical longitudinal bars and transverse or / and diagonal bars running transversely thereto.

Der Turmrahmen herkömmlicher Turmdrehkrane besteht aus übereinander angeordneten Turmelementen, von denen jedes als räumlicher Rahmen mit polygonalem Querschnitt ausgebildet ist. Der räumliche Rahmen jedes Turmelements hat in den Polygonecken angeordnete, vertikale Längsstä­be, die über Quer- und/oder Diagonalstabe fest mit den Längsstäben der benachbarten Polygonecken verschweißt sind. Die einander gegenüberliegenden Enden der Längs­stäbe übereinander angeordneter Turmelemente sind durch Verschraubung oder Verbolzung betriebsmäßig lösbar miteinander verbunden.The tower frame of conventional tower cranes consists of tower elements arranged one above the other, each of which is designed as a spatial frame with a polygonal cross section. The spatial frame of each tower element has vertical longitudinal bars arranged in the polygon corners, which are firmly welded to the longitudinal bars of the adjacent polygon corners via transverse and / or diagonal bars. The opposite ends of the longitudinal bars of tower elements arranged one above the other are operatively releasably connected to one another by screwing or bolting.

Die Turmelemente herkömmlicher Turmdrehkrane erfordern vergleichsweise hohen Fertigungsaufwand. Da die relativ großen räumlichen Rahmen der Turmelemente nur verhältnis­mäßig geringe Toleranzen haben dürfen, sind große Lehren für den Zusammenbau erforderlich, und die an dem räumlichen Rahmen für die Verbindung der Turmelemente angeordneten Kupplungselemente müssen mit engen Toleran­zen bearbeitet werden. Darüberhinaus liegen die Schweiß­nähte im dreidimensionalen Raum und sind für Schweiß­automaten nur schwer zugänglich. Die großen Abmessungen der Turmelemente erschweren den Transport wesentlich.The tower elements of conventional tower cranes require comparatively high production costs. Since the relatively large spatial frame of the tower elements may only have relatively small tolerances, great gauges are required for the assembly, and the coupling elements arranged on the spatial frame for the connection of the tower elements must be machined with narrow tolerances. In addition, the weld seams are in three-dimensional space and are difficult to access for welding machines. The large dimensions of the tower elements make transportation much more difficult.

Es ist weiterhin bekannt, die Turmelemente in mehrere miteinander verschraubte Teile aufzulösen. Hierdurch wird zwar das Transportvolumen verringert, doch geht dies zu Lasten eines erheblich erhöhten Fertigungsauf­wands und eines erheblich erhöhten Montageaufwands. Die im Bereich ihrer Quer- oder Diagonalstäbe auftrennbaren Turmelemente erfordern an den Trennstellen eine Vielzahl verschraubbarer Paßverbindungen. Konstruktionen dieser Art werden deshalb nur bei sehr langen Transportwegen, wie zum Beispiel beim Schiffstransport, eingesetzt. Beim betriebsmäßigen Transport von Baustelle zu Baustelle hingegen werden die Turmelemente nicht aufgelost.It is also known to dissolve the tower elements into several parts screwed together. Although the transport volume is reduced as a result, this is at the expense of a considerably increased production effort and a considerably increased assembly effort. The tower elements that can be separated in the area of their transverse or diagonal bars require a large number of screw-fit connections at the separation points. Constructions of this type are therefore only used for very long transport routes, such as ship transport. On the other hand, the tower elements are not dismantled during operational transport from construction site to construction site.

Es ist Aufgabe der Erfindung, einen Turmdrehkran mit einem in Turmelemente auflösbaren Turmrahmen zu schaffen, dessen Turmelemente einerseits vergleichsweise geringes Transportvolumen haben und sich andererseits mit relativ kleinem Fertigungsaufwand herstellen lassen.It is an object of the invention to provide a tower crane with a tower frame that can be broken down into tower elements, the tower elements of which on the one hand have a comparatively small transport volume and on the other hand can be manufactured with relatively little manufacturing effort.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Turmelemente aus mehreren, gesonderten, ebenen Rahmenelementen mit jeweils wenigstens zwei Längsstäben bestehen und daß die Längsstäbe benachbarter Rahmenele­mente im Bereich der Polygonecken paarweise nebeneinan­ der verlaufen und mit ihren Enden jeweils an ein zwi­schen benachbarten Turmelementen angeordnetes, den Rahmenelementen gemeinsames Zwischenelement drehsteif, jedoch lösbar angeschlossen sind.This object is achieved in that the tower elements consist of several, separate, flat frame elements, each with at least two longitudinal bars and that the longitudinal bars of adjacent frame elements in pairs in the area of the polygon corners which run and are connected with their ends to an intermediate element arranged between adjacent tower elements and common to the frame elements, but are detachably connected.

Die Turmelemente eines solchen Turmdrehkrans sind damit betriebsmäßig in ebene, für sich steife Rahmenelemente aufgelöst und werden erst beim Aufstellen des Turmdreh­krans durch die Verbindung mit den zwischen den Turmele­menten angeordneten Zwischenelementen zu einem räumli­chen Rahmen verbunden. Die ebenen Rahmenelemente lassen sich einfacher herstellen, da kleinere, in der Ebene justierende Montagelehren verwendet werden könnten und die Längsstäbe, Querstäbe und Diagonalstäbe der ebenen Rahmenelemente problemlos auch in Schweißautomaten geschweißt werden können. Zwar verlaufen bei dem erfin­dungsgemäßen Turmdrehkran in den Polygonecken die Längsstäbe paarweise nebeneinander, jedoch wird hier­durch das Gewicht und der Materialaufwand nicht verdop­pelt, da die Wandstärke der als Profilstangen oder Rohre ausgebildeten vertikalen Längsstäbe verringert werden kann. Der Aufwand an Schweißarbeiten zum Verbin­den der Querstäbe und Diagonalstäbe wird, verglichen mit herkömmlichen Turmdrehkranen, nicht erhöht.The tower elements of such a tower crane are thus operationally broken down into flat, rigid frame elements and are only connected to a spatial frame when the tower crane is erected by the connection with the intermediate elements arranged between the tower elements. The flat frame elements can be manufactured more easily, since smaller assembly gauges which can be adjusted in the plane could be used and the longitudinal bars, cross bars and diagonal bars of the flat frame elements can also be welded without problems in automatic welding machines. Although in the tower crane according to the invention the longitudinal bars run in pairs in the polygon corners, this does not double the weight and the cost of materials, since the wall thickness of the vertical longitudinal bars designed as profile bars or tubes can be reduced. The effort required to weld the crossbars and diagonal bars is not increased compared to conventional tower cranes.

In einer ersten Ausführungsform sind die im Bereich der Polygonecken nebeneinander verlaufenden Längsstäbe spiegelsymmetrisch zu der den Zwischenwinkel zwischen benachbarten Rahmenelementen halbierenden Schnittebene angeordnet. Diese Ausgestaltung ist vergleichsweise steif, da die vertikalen Längsstäbe bezogen auf den Materialaufwand vergleichsweise weit außen angeordnet werden können.In a first embodiment, the longitudinal bars running next to one another in the region of the polygon corners are arranged mirror-symmetrically to the sectional plane bisecting the intermediate angle between adjacent frame elements. This configuration is comparatively stiff, since the vertical longitudinal bars can be arranged comparatively far outside in relation to the cost of materials.

In einer punktsymmetrischen Variante liegt jeweils einer der beiden im Bereich der Polygonecke nebeneinan­der verlaufenden Längsstäbe benachbarter Rahmenelemente in der Ebene des Rahmenelements des jeweils anderen Längsstabs. In dieser Variante lassen sich mit herkömm­lichen Turmdrehkranen übereinstimmende Turmquerschnitte erzielen, so daß für die Montage des Krans bereits vorhandene, herkömmliche Kletterwerke eingesetzt werden können.A point-symmetrical variant lies in each case one of the two longitudinal bars of adjacent frame elements running next to one another in the region of the polygon corner in the plane of the frame element of the respective other longitudinal bar. In this variant, matching tower cross sections can be achieved with conventional tower cranes, so that existing, conventional climbing mechanisms can be used for the assembly of the crane.

Das Zwischenelement soll einerseits Verwindungskräfte der einzelnen Längsstäbe aber auch Verwindungskräfte des gesamten Turmrahmens aufnehmen. Es ist zweckmäßiger­weise als Platte, Scheibe oder ebener Rahmen ausgebildet. Derartige Zwischenelemente sind so flach, daß sie problemlos unter Ausnutzung der für die drehsteife Verbindung übereinander angeordneter Längsstäbe ohnehin vorgesehenen Kupplungselemente drehsteif an die Längs­stäbe angeschlossen werden kann. Bei den Kupplungsele­menten kann es sich um Zapfen mit Formschlußprofil, beispielsweise Vierkantprofil handeln, die in entspre­chende Öffnungen der Längsstäbe einsteckbar und dort beispielsweise mittels Bolzenverbindungen verriegelbar sind. Der Zapfen kann an dem Zwischenelemente drehsteif befestigt, beispielsweise angeschweißt, sein und beider­seits von dem Zwischenelement in den komplementär geformten Innenraum der als Rohrprofile ausgebildeten Längsstäbe eingreifen. Es versteht sich, daß der Zapfen geteilt und beiderseits an dem Zwischenelement ange­schweißt sein kann, oder aber durchgehend ausgebildet sein kann und das Zwischenelement durchsetzt. In einer Variante kann der Zapfen auch lediglich von einem der beiden benachbarten Enden übereinander angeordneter Längsstäbe abstehen und zur drehsteifen Kupplung durch eine komplementäre Öffnung des Zwischenelements hindurch in eine ebenfalls komplementäre Öffnung in dem Ende des benachbarten Längsstabs eingreifen. Alternativ können aber zur drehsteifen Verbindung der Enden übereinander angeordneter Längsstäbe und des Zwischenelements an den benachbarten Enden der Längsstäbe Laschen vorgesehen sein, durch die wenigstens zwei nebeneinander angeordne­te Schraubbolzen durch das Zwischenelement hindurch miteinander verschraubt sind.The intermediate element should absorb torsional forces of the individual longitudinal bars on the one hand, but also torsional forces of the entire tower frame. It is expediently designed as a plate, disc or flat frame. Such intermediate elements are so flat that they can be easily connected to the longitudinal rods using the coupling elements provided anyway for the torsionally rigid connection of longitudinal rods arranged one above the other. The coupling elements can be pins with a form-fitting profile, for example a square profile, which can be inserted into corresponding openings in the longitudinal bars and locked there, for example by means of bolt connections. The pin can be attached to the intermediate elements in a torsionally rigid manner, for example welded on, and can engage on both sides of the intermediate element in the complementarily shaped interior of the longitudinal rods designed as tubular profiles. It goes without saying that the pin can be divided and welded to the intermediate element on both sides, or else can be continuous and penetrate the intermediate element. In a variant, the pin can also only protrude from one of the two adjacent ends of longitudinal rods arranged one above the other and for torsionally rigid coupling through a complementary opening of the intermediate element into a likewise complementary opening in the end of the intervene adjacent longitudinal bar. Alternatively, for the torsionally rigid connection of the ends of longitudinal rods arranged one above the other and the intermediate element, tabs can be provided on the adjacent ends of the longitudinal rods, by means of which at least two screw bolts arranged next to one another are screwed together through the intermediate element.

In einer bevorzugten Ausgestaltung sind auch eventuelle Einbauten in den Turmrahmen durch einfache Steckverbin­dungen oder dergleichen miteinander verbunden. Beispiels­weise können die Zwischenelemente Durchstiegsöffnungen haben, und den Turmelementen sind jeweils Leitern zugeordnet, die mit ihren oberen Enden über eine Haken­verbindung lose aufgehängt sind, wobei zur Fixierung des unteren Leiterendes zweckmäßigerweise ein Steckkupp­lungsteil vorgesehen ist, das mit einem komplementären Kupplungsteil am oberen Ende der darunter angeordneten Leiter zusammenwirkt.In a preferred embodiment, any internals in the tower frame are connected to one another by simple plug connections or the like. For example, the intermediate elements can have access openings, and the tower elements are each assigned to conductors which are loosely suspended at their upper ends via a hook connection, with a plug-in coupling part being expediently provided for fixing the lower end of the conductor, which part has a complementary coupling part at the upper end of the one below Head interacts.

Wenigstens eines der Zwischenelemente kann als Adapter zum Anschließen einer Konstruktionseinheit des Krans an das durch die ebenen Rahmenelemente gebildete Turmele­ment ausgebildet sein. Dies erleichtert nicht nur das An­schließen des untersten Turmelements an die Kranbasis, sondern auch das Anschließen des Ausleger-Drehlagers usw.. Der Adapter ermöglicht aber auch Übergänge zu herkömmlichen, d.h. als räumlicher Rahmen ausgebildeten Turmelementen, so daß gegebenenfalls erfindungsgemäße Turmelemente bei bereits vorhandenen herkömmlichen Turmdrehkranen im Austausch herkömmlicher Turmelemente eingesetzt werden können.At least one of the intermediate elements can be designed as an adapter for connecting a structural unit of the crane to the tower element formed by the flat frame elements. This not only facilitates the connection of the lowest tower element to the crane base, but also the connection of the boom pivot bearing, etc. The adapter also enables transitions to conventional, i.e. Tower elements designed as a spatial frame, so that tower elements according to the invention can optionally be used in the exchange of conventional tower elements in existing conventional tower cranes.

Im folgenden wird die Erfindung anhand einer Zeichnung näher erläutert. Hierbei zeigt:

  • Fig. 1 eine perspektivische Ansicht eines Teils dem Turmrahmens eines Turmdrehkrans gemäß der Er­findung;
  • Fig. 2 eine schematische Querschnittsansicht des Turm­elements nach Fig. 1;
  • Fig. 3 eine schematische Querschnittsansicht einer Variante des Turmelements;
  • Fig. 4 bis 6 Schnittansichten von Kupplungsverbindungen ­zwischen benachbarten Enden übereinander ange­ordneter Längsstäbe mit zwischen den Turmele­menten angeordneten Zwischenelementen und
  • Fig. 7 eine schematische Schnittansicht des Turmrah­mens des Drehkrans mit darin aufgehängter Auf­stiegsleiter.
The invention is explained in more detail below with reference to a drawing. Here shows:
  • Figure 1 is a perspective view of part of the tower frame of a tower crane according to the invention.
  • FIG. 2 shows a schematic cross-sectional view of the tower element according to FIG. 1;
  • 3 shows a schematic cross-sectional view of a variant of the tower element;
  • 4 to 6 are sectional views of coupling connections between adjacent ends of longitudinal rods arranged one above the other with intermediate elements and arranged between the tower elements
  • Fig. 7 is a schematic sectional view of the tower frame of the slewing crane with a ladder suspended therein.

Fig. 1 zeigt einen Ausschnitt eines aus übereinander angeordneten Turmelementen 1 zusammengesetzten Turmrah­mens eines Turmdrehkrans. Die Turmelemente 1 sind durch ebene Rahmenelemente 3 gebildet, die in vertikalen Ebenen entsprechend einem gleichseitigen Polygon, hier einem Viereck, angeordnet sind. Jedes Rahmenelement 3 hat zwei im Bereich der Polygonecken angeordnete Längs­stäbe 5, die durch horizontal verlaufende Querstäbe 7 und schräg verlaufende Diagonalstäbe 9 verbunden sind. Die Stäbe 5, 7 und 9 sind steif miteinander verschweißt. Die Längsstäbe 5 benachbarter Rahmenelemente 3 verlaufen im Bereich der Polygonecken parallel nebeneinander und sind mit ihren Enden drehsteif an Zwischenelemente 11 angeschlossen, die jeweils zwischen zwei übereinander angeordneten Turmelementen 3 zur Aufnahme von Querschub­kräften des Turmrahmens angeordnet sind. Die einander benachbarten Enden übereinander angeordneter Längsstäbe 5 sind darüberhinaus in nachstehend noch näher erläuter­ter Weise zug- und schubfest miteinander gekuppelt. Die Verbindung der Rahmenelemente 3 untereinander und zum Zwischenelement 11 ist für die Montage und Demontage des Krans lösbar gestaltet. Die Längsstäbe 5 sind ausschließlich im Bereich ihrer Enden über die Zwischen­elemente 11 in Querrichtung miteinander verbunden.1 shows a section of a tower frame of a tower crane which is composed of tower elements 1 arranged one above the other. The tower elements 1 are formed by flat frame elements 3, which are arranged in vertical planes corresponding to an equilateral polygon, here a square. Each frame element 3 has two longitudinal bars 5 arranged in the region of the polygon corners, which are connected by horizontally running transverse bars 7 and diagonally extending diagonal bars 9. The rods 5, 7 and 9 are rigidly welded together. The longitudinal bars 5 of adjacent frame elements 3 run parallel next to one another in the region of the polygon corners and are connected with their ends in a torsionally rigid manner to intermediate elements 11, which are each arranged between two tower elements 3 arranged one above the other for absorbing transverse shear forces of the tower frame. The one another Adjacent ends of longitudinal rods 5 arranged one above the other are also coupled to one another in a manner which is explained in more detail below in a manner resistant to pulling and shearing. The connection of the frame elements 3 to one another and to the intermediate element 11 is designed to be detachable for the assembly and disassembly of the crane. The longitudinal bars 5 are connected to one another in the transverse direction only in the region of their ends via the intermediate elements 11.

Anders als Turmelemente herkömmlicher Turmdrehkrane wird der Turmrahmen am Montageort aus ebenen Rabmenele­menten und ebenen, insbesondere als Scheibe oder ebener Rahmen ausgebildeten Zwischenelementen 11 zusammengebaut. Die ebenen Rahmenelemente 3 haben nur ein vergleichs­weise geringes Transportvolumen und lassen sich mit vergleichsweise einfachen Lehren bei engen Toleranzen auch mittels Schweißroboter oder dergleichen zusammen­schweißen. Obwohl gegenüber herkömmlichen Turmelementen die Anzahl der vertikalen Längsstäbe verdoppelt wird, steigt der Materialaufwand nicht um das Doppelte an, da die Wandstärke der Längsstäbe 5 für eine gewünschte Festigkeit verringert werden kann. Da übereinander angeordnete Längsstäbe ausschließlich im Bereich ihrer Enden gekuppelt sind, nimmt der Montageaufwand des Krans nur unwesentlich zu.Unlike tower elements of conventional tower cranes, the tower frame is assembled at the installation location from flat roof elements and flat intermediate elements 11, in particular in the form of a disc or flat frame. The flat frame elements 3 only have a comparatively small transport volume and can also be welded together using comparatively simple gauges with narrow tolerances by means of welding robots or the like. Although the number of vertical longitudinal bars is doubled compared to conventional tower elements, the cost of materials does not increase twice, since the wall thickness of the longitudinal bars 5 can be reduced for a desired strength. Since longitudinal bars arranged one above the other are coupled only in the area of their ends, the assembly effort of the crane increases only insignificantly.

Bei dem Turmdrehkran der Fig. 1 sind, wie am besten Fig. 2 zeigt, die im Bereich der Polygonecken nebenein­ander verlaufenden Längsstäbe 5 spiegelsymmetrisch zu der den Zwischenwinkel zwischen benachbarten Rahmenele­menten 3 halbierenden Schnittebene 13 angeordnet. Dies hat den Vorteil, daß, bezogen auf den Materialaufwand, eine vergleichsweise hohe Steifigkeit erreicht wird. Im Gegensatz dazu zeigt Fig. 3 eine Variante der polygona­len Anordnungsweise der Rahmenelemente 3, bei welcher jeweils einer der beiden im Bereich der Polygonecke nebeneinander verlaufenden Längsstäbe 5 in der Ebene des Rahmenelements des jeweils anderen Längsstabs 5 liegt. In dieser Variante entspricht der Querschnitt des Turmelements 3 demjenigen herkömmlicher Turmelemente, so daß für die Montage des Krans bereits vorhandene Kletterwerke eingesetzt werden können.In the tower crane of FIG. 1, as best shown in FIG. 2, the longitudinal bars 5 running side by side in the area of the polygon corners are arranged mirror-symmetrically to the sectional plane 13 bisecting the intermediate angle between adjacent frame elements 3. This has the advantage that, based on the cost of materials, a comparatively high rigidity is achieved. In contrast, Fig. 3 shows a variant of the polygonal arrangement of the frame elements 3, in which one of the two longitudinal bars 5 running side by side in the area of the polygon corner lies in the plane of the frame element of the respective other longitudinal bar 5. In this variant, the cross section of the tower element 3 corresponds to that of conventional tower elements, so that existing climbing works can be used for the assembly of the crane.

Fig. 4 zeigt eine Ausgestaltung der drehsteifen Kupp­lungsverbindung zwischen übereinander angeordneten Längsstäben 5 und dem Zwischenelement 11. In einer Öffnung 14 des Zwischenelements 11 sitzt ein Kupplungs­zapfen 15. Der Kupplungszapfen 15 ist an dem Zwischen­element 11 festgeschweißt und steht beiderseits des Zwischenelements 11 mit Zapfenabschnitten 17 vor. Die Längsstäbe 5, bei welchen es sich zweckmäßigerweise um Profilrohre handelt, haben an den einander zugewandten Enden komplementäre Öffnungen 19 und sind auf die Zapfenabschnitte 17 aufgesteckt. Querbolzen 21 sorgen für eine drehsteife und sowohl zug- als auch schubfeste Verbindung der Längsstäbe 5 miteinander als auch zum Zwischenelement 11. Die Zapfenabschnitte 17 und die Öffnungen 19 können Formschlußprofil, beispielsweise Viereckprofil, haben. Darüberhinaus müssen die Zapfen­abschnitte 17 nicht einteilig miteinander verbunden sein. Sie können auch gesondert voneinander gefertigt und auf gegenüberliegenden Seiten des Zwischenelements angeschweißt werden.4 shows an embodiment of the torsionally rigid coupling connection between longitudinal bars 5 arranged one above the other and the intermediate element 11. A coupling pin 15 is seated in an opening 14 of the intermediate element 11. The coupling pin 15 is welded to the intermediate element 11 and projects on both sides of the intermediate element 11 with pin sections 17 . The longitudinal bars 5, which are expediently profiled tubes, have complementary openings 19 at the mutually facing ends and are plugged onto the pin sections 17. Cross bolts 21 ensure a torsionally rigid and both tensile and shear-resistant connection of the longitudinal bars 5 to one another and to the intermediate element 11. The pin sections 17 and the openings 19 can have a positive-locking profile, for example a square profile. In addition, the pin sections 17 do not have to be connected to one another in one piece. They can also be manufactured separately from one another and welded onto opposite sides of the intermediate element.

Fig. 5 zeigt eine Variante, bei welcher an den einander benachbarten Enden übereinander angeordneter Längsstäbe 5 jeweils mehrere, hier zwei, Schraublaschen 23 ange­schweißt sind. Die Schraublaschen 23 der Längsstäbe 5 liegen sich paarweise fluchtend gegenüber und nehmen Schraubbolzen 25 auf, die durch Paßbohrungen 27 des Zwischenelements 11 treten und die übereinander angeord­neten Längsstäbe 5 drehsteif wie auch zug- und schubfest miteinander als auch drehsteif mit dem Zwischenelement 11 verbinden.FIG. 5 shows a variant in which several, here two, screw tabs 23 are welded to the ends of longitudinal rods 5 which are arranged one above the other. The screw tabs 23 of the longitudinal rods 5 are aligned in pairs opposite each other and take screw bolts 25 through the fitting holes 27 of the Intermediate element 11 occur and connect the longitudinal rods 5 arranged one above the other in a torsionally rigid manner as well as in a tensile and shear-resistant manner to one another and also torsionally rigid with the intermediate element 11.

Fig. 6 zeigt eine Variante der Kupplungsverbindung aus Fig. 4, bei welcher am Ende eines der beiden übereinan­der angeordneten Längsstäbe 5, vorzugsweise dem oberen Ende des jeweils unteren Längsstabs 5, ein Zapfen 28 angeschweißt ist, der durch eine Paßöffnung 29 des Zwischenelements 11 hindurch in eine komplementäre Öffnung 31 des anderen, hier des oberen Längsstabs 5, eingreift. Ein quer dazu verlaufender Riegelbolzen 33 verbindet die beiden Längsstäbe 5 zug- und schubfest als auch drehsteif miteinander. Der Zapfen 28 hat Formquerschnitt und verbindet die beiden Längsstäbe 5 über die paßgenaue Öffnung 29 drehsteif mit dem Zwischen­element 11.FIG. 6 shows a variant of the coupling connection from FIG. 4, in which a pin 28 is welded to the end of one of the two longitudinal rods 5, preferably the upper end of the respective lower longitudinal rod 5, which extends through a fitting opening 29 of the intermediate element 11 engages in a complementary opening 31 of the other, here the upper longitudinal rod 5. A transversely running locking bolt 33 connects the two longitudinal rods 5 to one another in a tensile and shear-resistant manner and also torsionally rigid. The pin 28 has a cross-sectional shape and connects the two longitudinal bars 5 to the intermediate element 11 in a torsionally rigid manner via the precisely fitting opening 29.

Die vorstehenden Kupplungsverbindungen ermöglichen eine einfache und rasche Steckmontage der Rahmenelemente 3 und der Zwischenelemente 11.The above coupling connections enable the frame elements 3 and the intermediate elements 11 to be easily and quickly plugged in.

Die Zwischenelemente 11 haben Durchstiegsöffnungen 35 für den Aufstieg in dem Turmrahmen. Eine hierfür vorge­sehene Leiter (Fig. 7) besteht aus Leitersegmenten 37 mit einer den Längsstäben 5 angepaßten Länge. Die Leitersegmente 37 haben an ihrem oberen Ende Haken 39, mit welchen sie an den Zwischenelementen 11 aufgehängt sind. An ihren unteren Enden sind die Leitersegmente 37 über Steckkupplungen 41 mit dem oberen Ende des jeweils darunter angeordneten Leitersegments 37 gekuppelt. Eine Leiter dieser Art läßt sich ohne Schraubverbindung ebenfalls rasch montieren und demontieren.The intermediate elements 11 have access openings 35 for the ascent in the tower frame. A conductor provided for this purpose (FIG. 7) consists of conductor segments 37 with a length adapted to the longitudinal bars 5. The conductor segments 37 have hooks 39 at their upper end, with which they are suspended from the intermediate elements 11. At their lower ends, the conductor segments 37 are coupled via plug-in couplings 41 to the upper end of the conductor segment 37 arranged below them. A ladder of this type can also be quickly assembled and disassembled without a screw connection.

Nicht näher dargestellt ist eine Variante eines Zwischen­elements, welches lediglich auf einer seiner Seiten für die drehsteife Verbindung mit Längsstäben von Rahmenele­menten 3 eingerichtet ist. Auf seiner anderen Seite ist das Zwischenelement anderen Funktionen oder Konstruktio­nen angepaßt, so daß es als Endstück oder als Adapter für den Anschluß an Turmelemente und/oder sonstige Konstruktionseinheiten herkömmlicher Krane verwendet werden kann. Insbesondere können derartige Adapter zum Anschließen herkömmlicher, d.h. als räumlicher Rahmen mit lediglich jeweils einem Längsstab pro Polygoneck ausgerüsteter Turmelemente ausgenutzt werden. Auf diese Weise lassen sich herkömmliche Kräne mit vorstehend erläuterten Turmelementen nachrüsten.A variant of an intermediate element, which is only set up on one of its sides for the torsionally rigid connection with longitudinal bars of frame elements 3, is not shown. On the other hand, the intermediate element is adapted to other functions or constructions, so that it can be used as an end piece or as an adapter for connection to tower elements and / or other construction units of conventional cranes. In particular, such adapters for connecting conventional, i.e. be used as a spatial frame with tower elements equipped with only one longitudinal bar per polygon corner. In this way, conventional cranes can be retrofitted with the tower elements explained above.

Claims (12)

1. Turmdrehkran, dessen Turmrahmen aus mehreren überein­ander angeordneten, lösbar miteinander verbundenen Turmelementen (1) zusammengesetzt ist, von denen jedes einen etwa gleichseitig polygonalen Querschnitt hat und aus vertikalen Längsstäben (5) und quer dazu verlaufenden Quer- oder/und Diagonalstäben (7, 9) besteht,
dadurch gekennzeichnet, daß
die Turmelemente (1) aus mehreren, gesonderten, ebenen Rahmenelementen (3) mit jeweils wenigstens zwei Längsstäben (5) bestehen und daß die Längsstäbe benachbarter Rahmenelemente (3) im Bereich der Polygonecken paarweise nebeneinander verlaufen und mit ihren Enden jeweils an ein zwischen benachbarten Turmelementen (1) angeordnetes, den Rahmenelementen (3) gemeinsames Zwischenelement (11) drehsteif jedoch lösbar angeschlossen sind.1. tower crane, the tower frame of which is composed of a plurality of tower elements (1) which are detachably connected to one another, each of which has an approximately equilateral polygonal cross-section and vertical longitudinal bars (5) and transverse or / and diagonal bars (7, 9) there is
characterized in that
the tower elements (1) consist of several, separate, flat frame elements (3) each with at least two longitudinal bars (5) and that the longitudinal bars of adjacent frame elements (3) run in pairs in the area of the polygon corners and their ends each on an adjacent tower elements (1) arranged, the frame elements (3) common intermediate element (11) but connected releasably. 2. Turmdrehkran nach Anspruch 1, dadurch gekennzeichnet, daß die im Bereich der Polygonecken nebeneinander verlaufenden Längsstäbe (5) spiegelsymmetrisch zu der den Zwischenwinkel zwischen benachbarten Rahmen­elementen (3) halbierenden Schnittebene (13) angeord­net sind.2. Tower crane according to claim 1, characterized in that the longitudinal bars (5) which run side by side in the region of the polygon corners are arranged mirror-symmetrically to the cutting plane (13) bisecting the intermediate angle between adjacent frame elements (3). 3. Turmdrehkran nach Anspruch 1, dadurch gekennzeichnet, daß jeweils einer der beiden im Bereich einer Polygon­ecke nebeneinander verlaufenden Längsstäbe (5) benachbarter Rahmenelemente (3) in der Ebene des Rahmenelements (3) des jeweils anderen Längsstabs (5) liegt.3. Tower crane according to claim 1, characterized in that in each case one of the two longitudinal bars (5) of adjacent frame elements (3) extending in the area of a polygon corner in the plane of the Frame element (3) of the other longitudinal bar (5) is located. 4. Turmdrehkran nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Zwischenelement (11) als Platte oder ebener Rahmen ausgebildet ist.4. Tower crane according to one of claims 1 to 3, characterized in that the intermediate element (11) is designed as a plate or flat frame. 5. Turmdrehkran nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die in den Polygonecken paarweise nebeneinander verlaufenden Längsstäbe (5) ausschließlich im Bereich des Zwischenelements (11) , mit Kupplungselementen (17; 25; 27) für die Einlei­tung oder/und Übertragung von Kranlastkomponenten versehen sind.5. Tower crane according to one of claims 1 to 4, characterized in that the longitudinal bars (5) running in pairs in the polygon corners in the area of the intermediate element (11), with coupling elements (17; 25; 27) for the introduction or / and Transfer of crane load components are provided. 6. Turmdrehkran nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Enden übereinander angeordneter Längsstäbe (5) benachbarter Turmelemente (1) durch Kupplungselemente (17; 25; 27) lösbar miteinander verbunden sind, die die Enden der Längs­stäbe (5) zugleich drehsteif in deren Längsachse mit dem Zwischenelement (11) verbinden.6. Tower crane according to one of claims 1 to 5, characterized in that the ends of superimposed longitudinal bars (5) of adjacent tower elements (1) by coupling elements (17; 25; 27) are detachably connected to each other, which the ends of the longitudinal bars (5) at the same time connect torsionally rigid in the longitudinal axis to the intermediate element (11). 7. Turmdrehkran nach Anspruch 6, dadurch gekennzeichnet, daß auf beiden Seiten von dem Zwischenelement (11) Zapfen (17), insbesondere Zapfen mit einem Formschluß­profil abstehen, die zur drehsteifen Kupplung mit den Längsstäben in komplementäre Öffnungen (19) in den Enden der Längsstäbe (5) eingesteckt und durch lösbare Riegelbolzen (21) zug- und schubfest verrie­gelt sind.7. tower crane according to claim 6, characterized in that on both sides of the intermediate element (11) pins (17), in particular pins with a form-locking profile, which for torsionally rigid coupling with the longitudinal bars in complementary openings (19) in the ends of the longitudinal bars (5) are inserted and locked in a pull-and-push-resistant manner by releasable locking bolts (21). 8. Turmdrehkran nach Anspruch 6, dadurch gekennzeichnet, daß von einem der beiden benachbarten Enden überein­ander angeordneter Längsstäbe (5) ein Zapfen (27) mit Formschlußprofil absteht, der zur drehsteifen Kupplung durch eine komplementäre Öffnung (29) des Zwischenelements (11) hindurch in eine ebenfalls komplementäre Öffnung (31) in dem anderen Ende eingesteckt und durch einen Riegelbolzen (33) zug- und schubfest verriegelt ist.8. tower crane according to claim 6, characterized in that from one of the two adjacent ends of superimposed longitudinal rods (5) a pin (27) protrudes with positive locking profile, which is inserted for torsionally rigid coupling through a complementary opening (29) of the intermediate element (11) into a likewise complementary opening (31) in the other end and locked in a pull-and-push-resistant manner by a locking bolt (33). 9. Turmdrehkran nach Anspruch 6, dadurch gekennzeichnet, daß die benachbarten Enden übereinander angeordneter Längsstäbe (5) Laschen (23) tragen, die durch wenig­stens zwei nebeneinander angeordnete Schrauben (25) durch das Zwischenelement (11) hindurch miteinander verschraubt sind.9. tower crane according to claim 6, characterized in that the adjacent ends of superimposed longitudinal rods (5) carry tabs (23) which are screwed together by at least two screws (25) arranged side by side through the intermediate element (11). 10. Turmdrehkran nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Zwischenelemente (11) eine Durchstiegsöffnung (35) haben und daß den Turmelementen (1) jeweils Leitern (37) zugeordnet sind, die mit ihrem oberen Ende über eine Hakenver­bindung (39) lose aufgehängt sind.10. Tower crane according to one of claims 1 to 9, characterized in that the intermediate elements (11) have a passage opening (35) and that the tower elements (1) are each assigned conductors (37) which are connected at their upper end via a hook connection ( 39) are loosely hung. 11. Turmdrehkran nach Anspruch 10, dadurch gekennzeich­net, daß die Leitern (37) zur Fixierung ihres unteren Endes ein Steckkupplungsteil (39) aufweisen.11. Tower crane according to claim 10, characterized in that the conductors (37) have a plug-in coupling part (39) for fixing their lower end. 12. Turmdrehkran nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß wenigstens eines der Zwischenelemente (11) als Adapter zum Anschließen einer Konstruktionseinheit des Krans an das Turmele­ment (1) ausgebildet ist.12. Tower crane according to one of claims 1 to 11, characterized in that at least one of the intermediate elements (11) is designed as an adapter for connecting a structural unit of the crane to the tower element (1).
EP90115197A 1989-08-10 1990-08-07 Tower crane Expired - Lifetime EP0412519B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3926488 1989-08-10
DE3926488A DE3926488A1 (en) 1989-08-10 1989-08-10 TOWER TURNING CRANE

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EP0412519B1 EP0412519B1 (en) 1994-11-09

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Cited By (2)

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CN106044586A (en) * 2016-08-02 2016-10-26 郑州科润机电工程有限公司 Combined type frame section applied to fast assembling and disassembling of large tower crane
CN111747317A (en) * 2020-05-22 2020-10-09 中建三局集团有限公司 Self-elevating tower crane heightening and angle transformation conversion section and use method thereof

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CN114671358B (en) * 2022-03-03 2024-05-24 中核华兴达丰机械工程有限公司 Tower crane attachment, installation and disassembly lifting device

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FR1467093A (en) * 1965-11-15 1967-01-27 Richier Sa Improvement in the bonding of metal structural elements
US3395501A (en) * 1966-01-03 1968-08-06 Harsco Corp Hoist tower
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CN106044586A (en) * 2016-08-02 2016-10-26 郑州科润机电工程有限公司 Combined type frame section applied to fast assembling and disassembling of large tower crane
CN111747317A (en) * 2020-05-22 2020-10-09 中建三局集团有限公司 Self-elevating tower crane heightening and angle transformation conversion section and use method thereof

Also Published As

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DE59007679D1 (en) 1994-12-15
CA2016651A1 (en) 1991-02-10
DE3926488A1 (en) 1991-02-14
EP0412519B1 (en) 1994-11-09

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