EP2536653A1 - Luffing-jib tower crane - Google Patents

Luffing-jib tower crane

Info

Publication number
EP2536653A1
EP2536653A1 EP11704726A EP11704726A EP2536653A1 EP 2536653 A1 EP2536653 A1 EP 2536653A1 EP 11704726 A EP11704726 A EP 11704726A EP 11704726 A EP11704726 A EP 11704726A EP 2536653 A1 EP2536653 A1 EP 2536653A1
Authority
EP
European Patent Office
Prior art keywords
angle value
boom
angle
luffing
tower crane
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.)
Granted
Application number
EP11704726A
Other languages
German (de)
French (fr)
Other versions
EP2536653B1 (en
Inventor
Andreas Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wolffkran Holding AG
Original Assignee
Wolffkran Holding 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 Holding AG filed Critical Wolffkran Holding AG
Publication of EP2536653A1 publication Critical patent/EP2536653A1/en
Application granted granted Critical
Publication of EP2536653B1 publication Critical patent/EP2536653B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear
    • 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
    • B66C23/88—Safety gear

Definitions

  • the invention relates to a luffing jib tower crane in which the boom is held by a Wippseil.
  • Tower cranes comprise a crane base from which a tower extends upwards. At an upper portion of the tower, a boom and possibly a counter-jib is attached.
  • a boom is connected to the tower via a joint, so that the angle of the boom can be changed to the horizontal plane.
  • the boom is held by a Wippseil whose length can be changed by the rocker rope on a
  • Rope reel of a retractor is reeled or unwound.
  • Resistance value is converted by means of electronic data processing in the boom angle.
  • the measured current cantilever angle can be used to calculate the current load on the crane for each crane.
  • the determination of the projection is particularly important because the mathematical
  • Maximum value may not exceed, otherwise there is a risk that the crane overturned.
  • Discharge and load is exceeded when the measurement of the boom angle due to a device error is faulty.
  • the invention is based on the object, a jib tower crane for
  • the measurement according to the invention of the length of the unwound part of the seesaw cable makes it possible to calculate a second angle value, which corresponds to the minimum angle of the boom to the horizontal plane for a certain length of the seesaw cable.
  • a second angle value which corresponds to the minimum angle of the boom to the horizontal plane for a certain length of the seesaw cable.
  • For the real angle of the boom may possibly be greater than this second angle value with corresponding winches that push the boom inwards (upwards).
  • the comparison of the two angle values makes it possible to detect deviations. Just as the angle values can be determined continuously, they can also be compared continuously. Will one
  • Deviation detected there is inevitably a fault, which must be eliminated.
  • the sensor attached to the boom may be faulty or other components required for the determination of the two angle values may be defective. If the first angle value is greater than the second angle value, another cause that may be considered is that slack rope has formed due to strong wind.
  • the determination of the first angle value is completely independent of the determination of the second angle value, so that disturbances in the components responsible for the Determination of one angle value are required, for determining the other angle value can not influence.
  • the invention proves to be particularly advantageous when the measuring device has a second sensor which measures the rotation of the cable drum of the retraction unit during unwinding and winding.
  • a particularly advantageous embodiment of the invention provides that, when a deviation of the two angle values is detected during the unwinding of the seesaw, the drive of the retracting is switched off.
  • a further particularly advantageous embodiment of the invention provides that, in the case of a deviation of the first angle value from the second angle value, the seesaw cable is wound up until the second angle value coincides with the first angle value

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

A luffing-jib tower crane, comprising a tower and a jib which is connected to the tower via a joint and is held by a luffing cable, wherein the length of the luffing cable can be changed by a drawing-in unit, by the luffing cable being wound onto or unwound from a cable drum of the drawing-in unit, wherein the angle of the jib with respect to the horizontal plane is measured by a first sensor which is attached to the jib (first angular value), wherein a measuring device measures the length of the unwound part of the luffing cable, from which length the minimum angle of the jib with respect to the horizontal plane (second angular value) can be calculated, and the first angular value can be compared with the second angular value.

Description

Wippausleger-Turmkran  Luffing jib tower crane
Die Erfindung betrifft einen Wippausleger-Turmkran, bei dem der Ausleger von einem Wippseil gehalten wird. The invention relates to a luffing jib tower crane in which the boom is held by a Wippseil.
Turmkrane umfassen eine Kranbasis, von der ausgehend sich ein Turm nach oben erstreckt. An einem oberen Abschnitt des Turms ist ein Ausleger und möglicherweise ein Gegenausleger angebracht. Bei Wippausleger-Turmkranen ist ein Ausleger über ein Gelenk mit dem Turm verbunden, so dass der Winkel des Auslegers zur horizontalen Ebene veränderbar ist. Bei der Bauform von Wippausleger-Turmkranen, auf die sich die vorliegende Erfindung bezieht, wird der Ausleger von einem Wippseil gehalten, dessen Länge verändert werden kann, indem das Wippseil auf eine Tower cranes comprise a crane base from which a tower extends upwards. At an upper portion of the tower, a boom and possibly a counter-jib is attached. In luffing jib tower cranes, a boom is connected to the tower via a joint, so that the angle of the boom can be changed to the horizontal plane. In the design of luffing jib tower cranes, to which the present invention relates, the boom is held by a Wippseil whose length can be changed by the rocker rope on a
Seiltrommel eines Einziehwerks aufgespult oder abgespult wird. Rope reel of a retractor is reeled or unwound.
Bei Wippausleger-Turmkranen ist es bekannt, die Winkel des Auslegers gegen die horizontale Ebene (Auslegerwinkel) mit einem an dem Ausleger angebrachten Sensor zu messen. Die Funktionsweise eines solchen Sensors kann beispielsweise darin bestehen, dass ein aufgrund der Schwerkraft vertikal nach unten hängendes Pendel auf einen veränderlichen elektrischen Widerstand wirkt, dessen With luffing jib tower cranes, it is known to measure the angle of the boom against the horizontal plane (boom angle) with a sensor attached to the boom. The functioning of such a sensor can be, for example, that a pendulum suspended vertically downwards due to gravity acts on a variable electrical resistance whose
Widerstandswert mittels elektronischer Datenverarbeitung in den Auslegerwinkel umgerechnet wird. Resistance value is converted by means of electronic data processing in the boom angle.
Der gemessene aktuelle Auslegerwinkel kann dazu verwendet werden, für den jeweiligen Kran die aktuelle Ausladung der Last zu errechnen. Die Bestimmung der Ausladung ist insbesondere deshalb von Bedeutung, weil das mathematische The measured current cantilever angle can be used to calculate the current load on the crane for each crane. The determination of the projection is particularly important because the mathematical
Produkt aus Ausladung und Last einen für den jeweiligen Kran spezifischen Product of reach and load a specific for each crane
Maximalwert nicht überschreiten darf, da anderenfalls die Gefahr besteht, dass der Kran umstürzt. Maximum value may not exceed, otherwise there is a risk that the crane overturned.
Bei bekannten Wippausleger-Turmdrehkranen besteht das Risiko, dass Wind so stark und in solcher Richtung gegen den Ausleger bläst, dass die durch den Wind verursachte Kraft, die den Ausleger in Richtung Turm (nach innen) drückt größer ist als der Schwerkraftanteil, der den Ausleger vom Turm weg (nach außen) zieht. Wird in einer solchen Situation das Wippseil verlängert, indem es von der Seiltrommel des In known luffing jib tower cranes there is a risk that wind will blow against the boom so much and in such a direction that the force exerted by the wind, which pushes the boom in the direction of the tower (inwards), is greater than the gravity portion of the boom away from the tower (outwards). If, in such a situation, the seesaw cable is extended by being removed from the cable drum of the
BESTÄTIGUNGSKOPIE Einziehwerks abgespult wird, bewegt sich der Ausleger nicht nach außen, d.h. der Auslegerwinkel verkleinert sich nicht. Es bildet sich Schlaffseil. Lässt der Wind zu einem späteren Zeitpunkt nach, kann der Ausleger nach außen fallen, bis ihn das sich straffende Wippseil abrupt festhält. Die dabei entstehenden Erschütterungen können zu schweren Beschädigungen und Unfällen führen. CONFIRMATION COPY Uncoiler is unwound, the boom does not move outwards, ie the boom angle does not shrink. It forms slack rope. If the wind slows down at a later time, the boom can fall outwards until the tightening seesaw rope stops abruptly. The resulting vibrations can lead to serious damage and accidents.
Bei bekannten Wippausleger-Turmkranen besteht darüber hinaus trotz der beschriebenen Messung des Auslegerwinkels mittels eines am Ausleger In addition, in known luffing jib tower cranes, despite the described measurement of the boom angle by means of a boom
angebrachten Sensors das Risiko, dass der Maximalwert für das Produkt aus attached sensor the risk that the maximum value for the product out
Ausladung und Last überschritten wird, wenn die Messung des Auslegerwinkels wegen eines Gerätesfehlers fehlerhaft ist. Discharge and load is exceeded when the measurement of the boom angle due to a device error is faulty.
Der Erfindung liegt die Aufgabe zugrunde, einen Wippausleger-Turmkran zur The invention is based on the object, a jib tower crane for
Verfügung zu stellen, bei dem die beschriebenen Risiken vermieden werden. To avoid the risks described above.
Diese Aufgabe wird durch einen Wippausleger-Turmkran mit den im Patentanspruch 1 bezeichneten Merkmalen gelöst. Weitere Ausführungsformen sind Gegenstand der Unteransprüche oder nachfolgend beschrieben. This object is achieved by a luffing jib tower crane with the features specified in claim 1. Further embodiments are the subject matter of the subclaims or described below.
Die erfindungsgemäße Messung der Länge des abgespulten Teils des Wippseils ermöglicht die Berechnung eines zweiten Winkelwerts, der dem bei einer bestimmten Länge des Wippseils minimalen Winkel des Auslegers zur horizontalen Ebene entspricht. Denn der reale Winkel des Auslegers kann bei entsprechenden Winden, die den Ausleger nach innen (nach oben) drücken, möglicherweise größer sein als dieser zweite Winkelwert. Der Vergleich der beiden Winkelwerte ermöglicht die Feststellung von Abweichungen. Ebenso wie die Winkelwerte kontinuierlich ermittelt werden können, können sie auch kontinuierlich verglichen werden. Wird eine The measurement according to the invention of the length of the unwound part of the seesaw cable makes it possible to calculate a second angle value, which corresponds to the minimum angle of the boom to the horizontal plane for a certain length of the seesaw cable. For the real angle of the boom may possibly be greater than this second angle value with corresponding winches that push the boom inwards (upwards). The comparison of the two angle values makes it possible to detect deviations. Just as the angle values can be determined continuously, they can also be compared continuously. Will one
Abweichung festgestellt, liegt zwangsläufig eine Störung vor, die beseitigt werden muss. So kann der am Ausleger angebrachte Sensor fehlerhaft sein oder sonstige für die Bestimmung der beiden Winkelwerte erforderliche Komponenten defekt sein. Ist der erste Winkelwert größer als der zweite Winkelwert, so kommt als weitere Ursache in Betracht, dass sich aufgrund starken Windes Schlaffseil gebildet hat. Die Bestimmung des ersten Winkelwerts ist völlig unabhängig von der Bestimmung des zweiten Winkelwerts, so dass Störungen in den Komponenten, die für die Bestimmung des einen Winkelwerts erforderlich sind, für Bestimmung des anderen Winkelwerts nicht beeinflussen können. Deviation detected, there is inevitably a fault, which must be eliminated. Thus, the sensor attached to the boom may be faulty or other components required for the determination of the two angle values may be defective. If the first angle value is greater than the second angle value, another cause that may be considered is that slack rope has formed due to strong wind. The determination of the first angle value is completely independent of the determination of the second angle value, so that disturbances in the components responsible for the Determination of one angle value are required, for determining the other angle value can not influence.
Als besonders vorteilhaft erweist sich die Erfindung, wenn die Messvorrichtung einen zweiten Sensor aufweist, der die Drehung der Seiltrommel des Einziehwerks beim Abspulen und Aufspulen misst. The invention proves to be particularly advantageous when the measuring device has a second sensor which measures the rotation of the cable drum of the retraction unit during unwinding and winding.
Eine besonders vorteilhafte Ausführungsform der Erfindung sieht vor, dass, wenn während des Abspulens des Wippseils eine Abweichung der beiden Winkelwerte festgestellt wird, der Antrieb des Einziehwerks abgeschaltet wird. A particularly advantageous embodiment of the invention provides that, when a deviation of the two angle values is detected during the unwinding of the seesaw, the drive of the retracting is switched off.
Eine weitere besonders vorteilhafte Ausführungsform der Erfindung sieht vor, dass bei Abweichung des ersten Winkelwerts vom zweiten Winkelwert das Wippseil so weit aufgespult wird, bis der zweite Winkelwert mit dem ersten Winkelwert A further particularly advantageous embodiment of the invention provides that, in the case of a deviation of the first angle value from the second angle value, the seesaw cable is wound up until the second angle value coincides with the first angle value
übereinstimmt. Bei dieser Ausführungsform wird ermöglicht, ein Schlaffseil, das sich bereits gebildet hat, weil Wind den Ausleger nach innen (nach oben) drückt, wieder zu beseitigen, in dem das Wippseil auf die Länge verkürzt wird, die dem realen Auslegerwinkel entspricht. Auf diese Weise wird ausgeschlossen, dass der Ausleger, wenn der Wind nachlässt, nach außen (nach unten) fällt und abrupt vom Wippseil festgehalten wird. Auf diese Weise werden gefährliche Erschütterungen verhindert. matches. In this embodiment, it is possible to eliminate a slack rope that has already been formed, because wind pushes the boom inwards (upwards), in which the seesaw rope is shortened to the length corresponding to the real boom angle. In this way, it is excluded that the boom, when the wind subsides, falls outwards (downwards) and is abruptly held by the seesaw rope. In this way dangerous shocks are prevented.

Claims

Patentansprüche claims
1. Wippausleger-Turmkran, umfassend einen Turm und einen über ein Gelenk mit dem Turm verbundenen Ausleger, der von einem Wippseil gehalten wird, wobei die Länge des Wippseils durch ein Einziehwerk verändert werden kann, indem das Wippseil auf eine Seiltrommel des Einziehwerks aufgespult oder abgespult wird, wobei der Winkel des Auslegers zur horizontalen Ebene durch einen am Ausleger angebrachten ersten Sensor gemessen wird (erster Winkelwert), 1. luffing jib tower crane, comprising a tower and a boom connected to the tower boom, which is held by a Wippseil, the length of the whipping rope can be changed by a retractor by the Wippseil wound on a cable drum of the retractor or unwound with the angle of the cantilever being measured to the horizontal plane by a first sensor attached to the cantilever (first angle value),
dadurch gekennzeichnet, dass characterized in that
eine Messvorrichtung die Länge des abgespulten Teils des Wippseils misst, aus der der minimale Winkel des Auslegers zur horizontalen Ebene (zweiter Winkelwert) errechnet werden kann, und der erste Winkelwert mit dem zweiten Winkelwert verglichen werden kann. a measuring device measures the length of the unwound part of the seesaw, from which the minimum angle of the boom to the horizontal plane (second angle value) can be calculated, and the first angle value can be compared with the second angle value.
2. Wippausleger-Turmkran nach Anspruch 1 , dadurch gekennzeichnet, dass die Messvorrichtung einen zweiten Sensor aufweist, der die Drehung der Seiltrommel des Einziehwerks beim Abspulen und Aufspulen misst. 2. luffing jib tower crane according to claim 1, characterized in that the measuring device comprises a second sensor which measures the rotation of the cable drum of the retraction during unwinding and winding.
3. Wippausleger-Turmkran nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass bei Abweichung des ersten Winkelwerts vom zweiten 3. luffing jib tower crane according to one of the preceding claims, characterized in that at deviation of the first angle value of the second
Winkelwert der Antrieb des Einziehwerks abgeschaltet wird. Angle value of the drive of the retractor is switched off.
4. Wippausleger-Turmkran nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass bei Abweichung des ersten Winkelwerts vom zweiten 4. luffing jib tower crane according to one of claims 1 or 2, characterized in that at deviation of the first angle value of the second
Winkelwert das Wippseil so weit aufgespult wird, bis der zweite Winkelwert mit dem ersten Winkelwert übereinstimmt. Angle value, the seesaw rope is wound up until the second angle value coincides with the first angle value.
EP11704726.6A 2010-02-16 2011-02-16 Luffing-jib tower crane Active EP2536653B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010008155A DE102010008155B4 (en) 2010-02-16 2010-02-16 Luffing jib tower crane
PCT/EP2011/000742 WO2011101133A1 (en) 2010-02-16 2011-02-16 Luffing-jib tower crane

Publications (2)

Publication Number Publication Date
EP2536653A1 true EP2536653A1 (en) 2012-12-26
EP2536653B1 EP2536653B1 (en) 2013-07-24

Family

ID=43927756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11704726.6A Active EP2536653B1 (en) 2010-02-16 2011-02-16 Luffing-jib tower crane

Country Status (10)

Country Link
US (1) US8955702B2 (en)
EP (1) EP2536653B1 (en)
AU (1) AU2011217550B2 (en)
BR (1) BR112012020590B1 (en)
CA (1) CA2789924C (en)
DE (1) DE102010008155B4 (en)
ES (1) ES2431628T3 (en)
RU (1) RU2521445C2 (en)
SG (1) SG183348A1 (en)
WO (1) WO2011101133A1 (en)

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DE102012010759A1 (en) 2012-05-31 2013-12-05 Wolffkran Holding Ag Electrohydraulic device for adjusting a boom
JP6121663B2 (en) 2012-07-10 2017-04-26 株式会社タダノ Work vehicle
FR3071489A1 (en) * 2017-09-28 2019-03-29 Manitowoc Crane Group France METHOD FOR SECURING A CRANE ARROW CRANE AND ASSOCIATED CRANE

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Also Published As

Publication number Publication date
DE102010008155A1 (en) 2011-08-18
RU2012138301A (en) 2014-03-27
ES2431628T3 (en) 2013-11-27
WO2011101133A1 (en) 2011-08-25
DE102010008155B4 (en) 2013-02-28
EP2536653B1 (en) 2013-07-24
BR112012020590A2 (en) 2016-07-19
US20130062301A1 (en) 2013-03-14
AU2011217550B2 (en) 2014-08-21
RU2521445C2 (en) 2014-06-27
AU2011217550A1 (en) 2012-09-06
BR112012020590B1 (en) 2020-06-16
CA2789924A1 (en) 2011-08-25
US8955702B2 (en) 2015-02-17
CA2789924C (en) 2015-04-14
SG183348A1 (en) 2012-09-27

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