WO2008009399A1 - Use of a bush in the connection of tower elements of a tower crane - Google Patents

Use of a bush in the connection of tower elements of a tower crane Download PDF

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Publication number
WO2008009399A1
WO2008009399A1 PCT/EP2007/006287 EP2007006287W WO2008009399A1 WO 2008009399 A1 WO2008009399 A1 WO 2008009399A1 EP 2007006287 W EP2007006287 W EP 2007006287W WO 2008009399 A1 WO2008009399 A1 WO 2008009399A1
Authority
WO
WIPO (PCT)
Prior art keywords
tower
elements
pin
openings
tower crane
Prior art date
Application number
PCT/EP2007/006287
Other languages
German (de)
French (fr)
Inventor
Reinald Geissler
Original Assignee
Wolffkran Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wolffkran Ag filed Critical Wolffkran Ag
Priority to AT07786089T priority Critical patent/ATE476392T1/en
Priority to EP07786089A priority patent/EP2041018B1/en
Priority to DE502007004661T priority patent/DE502007004661D1/en
Publication of WO2008009399A1 publication Critical patent/WO2008009399A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—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
    • B66C23/286—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 with locking devices

Definitions

  • the invention relates to the use of a socket in the connection of tower filempnt.pn a tower crane.
  • Tower cranes comprise a crane base from which a tower extends upwards. At an upper portion of the tower usually a boom and possibly a counter-jib is attached. Tower cranes are known for example from the patent DE 35 10 116 C2.
  • the tower of a tower crane usually comprises several tower elements (also referred to as "tower shots") .
  • the tower elements can be 4.5m long and 2.5t heavy, for example is thereby made possible that the ends of the corner posts of the tower elements each have pins or sleeves for pin receptacle, which can be inserted into one another during assembly.
  • the pins and the sleeves for receiving the pins can thereby aligned with one another, continuous and substantially cylindrical, In each case a substantially cylindrical bolt is fitted in.
  • a tower element can only have sleeves at its one end and only pins at the other end.
  • the openings (bores) in the spigots and pods of the tower elements may become larger (beat) over time due to the strong forces acting on them and the constantly changing stress, until finally the permissible tolerance limit is reached.
  • the invention has for its object to connect tower elements with different sized holes and thereby avoid the disadvantages of the known solutions.
  • Claim 4 relates to a tower crane, in which a socket is used according to claim 1. Further embodiments are the subject matter of the subclaims or described below.
  • the bushing preferably has as inner diameter (within the tolerance limits) the diameter of the openings in the sleeves of one tower element (with the smaller holes) and as outer diameter the diameter of the openings in the pins of the other tower element (with the larger openings).
  • the bushing is preferably made of a high quality material, most advantageously of the same material as the bolt used, preferably high quality steel such as alloy 42 CrMo 4.
  • the sleeve preferably has at one end to an outwardly projecting collar against which Moving too far into the hole insures. The bush is pushed into the pin with the larger opening.
  • the socket can be removed again after years, it can be knocked out by means of a simple tool.
  • the turrets of the turret are always at the top, while the sleeves are located at the bottom and are pushed over the pins of the bottom tower element.
  • the invention also provides a method of repairing a worn opening in the journal of a tower element of a tower crane, in which the opening in the journal is drilled so as to obtain a cylindrical shape of increased diameter, and then a bush in the Opening is pushed, whose inner diameter corresponds to the original inner diameter of the opening.
  • the solution according to the invention has the advantage that welding is completely eliminated.
  • Figure 1 shows the cross section through a portion of pin and sleeve of two interconnected tower elements.
  • the sleeve 1 is shown a corner post of a tower element, which is pushed over the pin 2 of another tower element.
  • the cylindrical opening 3 in the pin 2 has a larger diameter than the openings 4a, 4b in the sleeve 1.
  • a cylindrical bushing 5 is inserted, whose outer diameter corresponds to the diameter of the opening 3 of the pin 2 and whose Inner diameter of the openings 4a, 4b of the sleeve 1 corresponds.
  • the bush 5 has on the side of the opening 4 a circumferential collar 6.

Abstract

The invention relates to the use of a bush in the connection of tower elements of a tower crane. Whereas, hitherto, holes punched in the tower elements have had to be repaired in a complicated manner by being welded shut and re-drilled, the use of the bush according to the invention permits rapid repair in situ. By this means, the tower crane is ready for use again within a very short period of time, since the individual elements do not have to be brought first to a special workshop in which the repair work is undertaken.

Description

Verwendung einer Buchse bei der Verbindung von Turmelementen eines Use of a socket in the connection of tower elements of a
Turmkranstower crane
Die Erfindung betrifft die Verwendung einer Buchse bei der Verbindung von Turm- filempnt.pn eines Turmkrans.The invention relates to the use of a socket in the connection of tower filempnt.pn a tower crane.
Turmkrane umfassen eine Kranbasis, von der ausgehend sich ein Turm nach oben erstreckt. An einem oberen Abschnitt des Turms ist üblicherweise ein Ausleger und möglicherweise ein Gegenausleger angebracht. Turmkrane sind zum Beispiel aus der Patentschrift DE 35 10 116 C2 bekannt.Tower cranes comprise a crane base from which a tower extends upwards. At an upper portion of the tower usually a boom and possibly a counter-jib is attached. Tower cranes are known for example from the patent DE 35 10 116 C2.
Der Turm eines Turmkranes umfasst üblicherweise mehrere Turmelemente (auch als „Turmschüsse" bezeichnet). Die Turmelemente können beispielsweise 4,5m lang und 2,5t schwer sein. Die vertikal verlaufenden Eckstiele der Turmelemente werden formschlüssig aufeinander gesetzt und lösbar mittels Bolzen verbunden. Diese Bolzenverbindung wird dadurch ermöglicht, dass die Enden der Eckstiele der Turmelemente jeweils Zapfen bzw. Hülsen zur Zapfenaufnahme aufweisen, die bei der Montage ineinander gesteckt werden können. Die Zapfen und die Hülsen zur Aufnahme der Zapfen können dabei mit zueinander ausgerichteten, durchgehenden und im wesentlichen zylindrischen, durchmessergleichen Öffnungen versehen sein, in die jeweils ein im wesentlichen zylindrischer Bolzen eingepasst wird. Ein Turmelement kann an seinem einen Ende nur Hülsen und an dem anderen Ende nur Zapfen aufweisen.The tower of a tower crane usually comprises several tower elements (also referred to as "tower shots") .The tower elements can be 4.5m long and 2.5t heavy, for example is thereby made possible that the ends of the corner posts of the tower elements each have pins or sleeves for pin receptacle, which can be inserted into one another during assembly.The pins and the sleeves for receiving the pins can thereby aligned with one another, continuous and substantially cylindrical, In each case a substantially cylindrical bolt is fitted in. A tower element can only have sleeves at its one end and only pins at the other end.
Die Öffnungen (Bohrungen) in den Zapfen und Hülsen der Turmelemente werden durch die starken Kräfte, die auf sie wirken, und die ständig wechselnde Beanspruchung im Laufe der Zeit möglicherweise größer (schlagen aus), bis schließlich die zulässige Toleranzgrenze erreicht wird.The openings (bores) in the spigots and pods of the tower elements may become larger (beat) over time due to the strong forces acting on them and the constantly changing stress, until finally the permissible tolerance limit is reached.
DE 23 51 177 A1 zeigt eine Turmschussverbindung, bei der die Bolzen zweiteilig ausgebildet sind und sich aus einem Kern mit konischer Mantelfläche und einer äußeren, längsgeschlitzten Hülse mit konischer Bohrung zusammensetzen. Die äußere Hülse wird von dem Kern radial nach außen gedrückt und soll so auch bei ausgeschlagenen Bohrungen festen Sitz gewährleisten. Diese Lösung ist jedoch nur für leichte und gleichmäßige Vergrößerungen der Bohrungen geeignet. Im Falle stärkerer Vergrößerungen der Öffnungen (Bohrungen) ist es bekannt, die Öffnungen in den Eckstielen zuzuschweißen und neu zu bohren. Dies hat jedoch den Nachteil, dass es sehr zeitaufwändig ist, insbesondere, da es sich bei Bohren und Schweißen um völlig verschiedene Tätigkeiten handelt, die von verschiedenen Fachleuten ausgeführt werden. Bekannt ist weiterhin, die ausgeschlagenen Öffnungen auszubohren, also die Öffnungen zu vergrößern, mit der Folge, dass es Turmelemente mit verschieden großen Öffnungen (Bohrungen) gibt. Die Öffnungen von Turmelementen können jedoch auch von vorneherein unterschiedlich groß sein, weil sie beispielsweise zu unterschiedlichen Generationen von Turmelementen gehören. Zur Verbindung solcher Turmelemente mit verschieden großen Bohrungen ist es bekannt, ein Adapter-Turmelement vorzuhalten, dessen eines Ende mit den Turmelementen mit den kleineren Bohrungen und des anderes Ende mit den Turmelementen mit den größeren Bohrungen zusammenpasst. Diese Lösung hat jedoch insbesondere den Nachteil, dass sie erheblichen logistischen Aufwand erfordert, damit das A- dapter-Turmelement dorthin gelang, wo es gebraucht wird.DE 23 51 177 A1 shows a tower connection, in which the bolts are formed in two parts and composed of a core with a conical lateral surface and an outer, longitudinally slotted sleeve with a conical bore. The outer sleeve is pressed by the core radially outward and should thus ensure tight fit even with knocked holes. However, this solution is only suitable for slight and uniform enlargement of the holes. In the case of stronger enlargements of the openings (holes), it is known to weld the openings in the corner stems and re-drill. However, this has the disadvantage that it is very time-consuming, in particular, since drilling and welding are completely different activities carried out by different experts. It is also known to drill out the knocked-out openings, ie to enlarge the openings, with the result that there are tower elements with openings of different sizes (bores). However, the openings of tower elements can also be of different size from the outset because they belong, for example, to different generations of tower elements. For connecting such tower elements with different sized holes, it is known vorzuhalten an adapter tower element, which matches one end with the tower elements with the smaller holes and the other end with the tower elements with the larger holes. However, this solution has the particular disadvantage that it requires considerable logistical effort, so that the adapters tower element succeeded where it is needed.
Der Erfindung liegt die Aufgabe zugrunde, Turmelemente mit verschieden großen Bohrungen zu verbinden und dabei die Nachteile der bekannten Lösungen zu vermeiden.The invention has for its object to connect tower elements with different sized holes and thereby avoid the disadvantages of the known solutions.
Diese Aufgabe wird durch die Verwendung einer Buchse mit den im Patentanspruch 1 bezeichneten Merkmalen gelöst. Patentanspruch 4 betrifft einen Turmkran, bei dem eine Buchse nach Patentanspruch 1 verwendet wird. Weitere Ausführungsformen sind Gegenstand der Unteransprüche oder nachfolgend beschrieben.This object is achieved by the use of a socket having the features designated in claim 1. Claim 4 relates to a tower crane, in which a socket is used according to claim 1. Further embodiments are the subject matter of the subclaims or described below.
Die Buchse hat vorzugsweise als Innendurchmesser (innerhalb der Toleranzgrenzen) den Durchmesser der Öffnungen in den Hülsen des einen Turmelements (mit den kleineren Bohrungen) und als Außendurchmesser den Durchmesser der Öffnungen in den Zapfen des anderen Turmelements (mit den größeren Öffnungen). Die Buchse besteht vorzugsweise aus einem hochwertigen Material, ganz besonders vorteilhafterweise aus dem gleichen Material wie die verwendeten Bolzen, vorzugsweise hochwertigem Stahl wie beispielsweise legiertem 42 CrMo 4. Die Buchse weist bevorzugt an einem Ende einen nach außen überstehenden Bund auf, der sie gegen ein Verschieben zu weit in die Bohrung hineinsichert. Die Buchse wird in den Zapfen mit der größeren Öffnung hineingeschoben.The bushing preferably has as inner diameter (within the tolerance limits) the diameter of the openings in the sleeves of one tower element (with the smaller holes) and as outer diameter the diameter of the openings in the pins of the other tower element (with the larger openings). The bushing is preferably made of a high quality material, most advantageously of the same material as the bolt used, preferably high quality steel such as alloy 42 CrMo 4. The sleeve preferably has at one end to an outwardly projecting collar against which Moving too far into the hole insures. The bush is pushed into the pin with the larger opening.
Die Buchse lässt sich auch nach Jahren wieder ausbauen, sie kann mittels eines einfachen Werkzeugs ausgeschlagen werden. Die Zapfsn des Turrrieiernents sind immer oben, während die Hülsen unten angeordnet sind und über die Zapfen des unteren Turmelementes geschoben werden.The socket can be removed again after years, it can be knocked out by means of a simple tool. The turrets of the turret are always at the top, while the sleeves are located at the bottom and are pushed over the pins of the bottom tower element.
Mit der Erfindung wird auch ein Verfahren zur Reparatur einer ausgeschlagenen Öffnung in dem Zapfen eines Turmelements eines Turmkrans zur Verfügung gestellt, bei dem die Öffnung in dem Zapfen aufgebohrt wird, so dass sie eine zylindrische Form mit vergrößertem Durchmesser erhält, und anschließend eine Buchse in die Öffnung geschoben wird, deren Innendurchmesser dem ursprünglichen Innendurchmesser der Öffnung entspricht. Die erfindungsgemäße Lösung hat den Vorteil, dass das Schweißen völlig entfällt.The invention also provides a method of repairing a worn opening in the journal of a tower element of a tower crane, in which the opening in the journal is drilled so as to obtain a cylindrical shape of increased diameter, and then a bush in the Opening is pushed, whose inner diameter corresponds to the original inner diameter of the opening. The solution according to the invention has the advantage that welding is completely eliminated.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben:An embodiment of the invention is illustrated in the drawing and will be described in more detail below:
Figur 1 zeigt den Querschnitt durch einen Abschnitt von Zapfen und Hülse zweier miteinander verbundener Turmelemente.Figure 1 shows the cross section through a portion of pin and sleeve of two interconnected tower elements.
In Figur 1 ist die Hülse 1 eines Eckstiels eines Turmelements dargestellt, die über den Zapfen 2 eines anderen Turmelements geschoben ist. Die zylindrische Öffnung 3 in dem Zapfen 2 hat einen größeren Durchmesser als die Öffnungen 4a, 4b in der Hülse 1. In die Öffnung 3 des Zapfens 2 ist eine zylindrische Buchse 5 eingeschoben, deren Außendurchmesser dem Durchmesser der Öffnung 3 des Zapfens 2 entspricht und deren Innendurchmesser den Öffnungen 4a, 4b der Hülse 1 entspricht. Die Buchse 5 weist auf der Seite der Öffnung 4a einen umlaufenden Bund 6 auf. In Figure 1, the sleeve 1 is shown a corner post of a tower element, which is pushed over the pin 2 of another tower element. The cylindrical opening 3 in the pin 2 has a larger diameter than the openings 4a, 4b in the sleeve 1. In the opening 3 of the pin 2, a cylindrical bushing 5 is inserted, whose outer diameter corresponds to the diameter of the opening 3 of the pin 2 and whose Inner diameter of the openings 4a, 4b of the sleeve 1 corresponds. The bush 5 has on the side of the opening 4 a circumferential collar 6.

Claims

Patentansprüche claims
1. Verwendung einer zylindrischen Buchse zur Verkleinerung der Öffnungen in den Zapfen eines Turmelementes eines Turmkrans, dadurch gekennzeichnet, dass de: Innendurchmesser der Buchse dem Durchmesser der Öffnungen in den Hülsen eines anderen Turmelementes des Turmkrans entspricht.1. Use of a cylindrical sleeve for reducing the openings in the journal of a tower element of a tower crane, characterized in that de: inner diameter of the bush corresponds to the diameter of the openings in the sleeves of another tower element of the tower crane.
2. Verwendung einer zylindrischen Buchse nach Anspruch 1 , dadurch gekennzeichnet, dass die Buchse aus demselben Material besteht wie der Zapfen.2. Use of a cylindrical bushing according to claim 1, characterized in that the bushing consists of the same material as the pin.
3. Turmkran umfassend mindestens zwei Turmelemente, die in der Weise miteinander verbunden sind, dass vertikal verlaufende Eckstiele der Turmelemente jeweils Zapfen bzw. Hülsen zur Zapfenaufnahme aufweisen, die ineinander gesteckt und lösbar mittels durch zylindrische Öffnungen in den Zapfen bzw. die Hülse eingeschobene Verbindungsbolzen verbunden sind, wobei in mindestens einen Zapfen eine Buchse eingeschoben ist, die den Durchmesser der Öffnung in dem Zapfen verkleinert, dadurch gekennzeichnet, dass der Innendurchmesser der Buchse dem Durchmesser der Öffnungen in den Hülsen eines anderen Turmelementes des Turmkrans entspricht.3. Tower crane comprising at least two tower elements which are connected to each other in such a way that vertically extending corner posts of the tower elements each have pins or sleeves for pin receiving, which are inserted into one another and releasably connected by means of cylindrical openings in the pin or the sleeve inserted connecting bolt are, wherein in at least one pin a bushing is inserted, which reduces the diameter of the opening in the pin, characterized in that the inner diameter of the bush corresponds to the diameter of the openings in the sleeves of another tower element of the tower crane.
4. Turmkran nach Anspruch 3, dadurch gekennzeichnet, dass die Buchse aus demselben Material besteht wie der Zapfen. 4. tower crane according to claim 3, characterized in that the bushing consists of the same material as the pin.
PCT/EP2007/006287 2006-07-18 2007-07-16 Use of a bush in the connection of tower elements of a tower crane WO2008009399A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT07786089T ATE476392T1 (en) 2006-07-18 2007-07-16 USE OF A BUSHING IN CONNECTING TOWER ELEMENTS OF A TOWER CRANE
EP07786089A EP2041018B1 (en) 2006-07-18 2007-07-16 Use of a bush in the correction of tower elements of a tower crane
DE502007004661T DE502007004661D1 (en) 2006-07-18 2007-07-16 USE A JACK IN THE CONNECTION OF TOWER ELEMENTS OF A TOWER CRANE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006033594.5 2006-07-18
DE102006033594A DE102006033594B3 (en) 2006-07-18 2006-07-18 Use of a socket in the connection of tower elements of a tower crane

Publications (1)

Publication Number Publication Date
WO2008009399A1 true WO2008009399A1 (en) 2008-01-24

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Application Number Title Priority Date Filing Date
PCT/EP2007/006287 WO2008009399A1 (en) 2006-07-18 2007-07-16 Use of a bush in the connection of tower elements of a tower crane

Country Status (4)

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EP (1) EP2041018B1 (en)
AT (1) ATE476392T1 (en)
DE (2) DE102006033594B3 (en)
WO (1) WO2008009399A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023134115A1 (en) * 2022-01-13 2023-07-20 中联重科建筑起重机械有限责任公司 Mast section device and tower crane

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1169226A (en) * 1966-02-01 1969-10-29 Richier Sa Improvements in or relating to Towers or Beams
DE2351177A1 (en) * 1973-10-11 1975-04-24 Liebherr Hans Dr Ing E H TOWER JOINT
SU887440A1 (en) * 1979-11-02 1981-12-07 Механический Завод Управления Капитального Ремонта Ленгорисполкома Device for matching three-dimensional tower crane sections
EP0530114A1 (en) * 1991-08-30 1993-03-03 Potain Dismountable assembly device for metallic framework elements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1169226A (en) * 1966-02-01 1969-10-29 Richier Sa Improvements in or relating to Towers or Beams
DE2351177A1 (en) * 1973-10-11 1975-04-24 Liebherr Hans Dr Ing E H TOWER JOINT
SU887440A1 (en) * 1979-11-02 1981-12-07 Механический Завод Управления Капитального Ремонта Ленгорисполкома Device for matching three-dimensional tower crane sections
EP0530114A1 (en) * 1991-08-30 1993-03-03 Potain Dismountable assembly device for metallic framework elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023134115A1 (en) * 2022-01-13 2023-07-20 中联重科建筑起重机械有限责任公司 Mast section device and tower crane

Also Published As

Publication number Publication date
ATE476392T1 (en) 2010-08-15
EP2041018B1 (en) 2010-08-04
EP2041018A1 (en) 2009-04-01
DE102006033594B3 (en) 2008-01-24
DE502007004661D1 (en) 2010-09-16

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