EP0941959B1 - Crane hoist unit - Google Patents

Crane hoist unit Download PDF

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Publication number
EP0941959B1
EP0941959B1 EP98890071A EP98890071A EP0941959B1 EP 0941959 B1 EP0941959 B1 EP 0941959B1 EP 98890071 A EP98890071 A EP 98890071A EP 98890071 A EP98890071 A EP 98890071A EP 0941959 B1 EP0941959 B1 EP 0941959B1
Authority
EP
European Patent Office
Prior art keywords
cable
load
strands
bearing means
crane hoist
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98890071A
Other languages
German (de)
French (fr)
Other versions
EP0941959A1 (en
Inventor
Andreas Dipl.-Ing. Lackner
Hubert Dipl.-Ing. Strasser
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.)
Voith Werke Ing A Fritz Voith GmbH and Co KG
Original Assignee
Voith Werke Ing A Fritz Voith GmbH and Co KG
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 Voith Werke Ing A Fritz Voith GmbH and Co KG filed Critical Voith Werke Ing A Fritz Voith GmbH and Co KG
Priority to EP98890071A priority Critical patent/EP0941959B1/en
Priority to AT98890071T priority patent/ATE267138T1/en
Priority to DE59811423T priority patent/DE59811423D1/en
Publication of EP0941959A1 publication Critical patent/EP0941959A1/en
Application granted granted Critical
Publication of EP0941959B1 publication Critical patent/EP0941959B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/04Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads

Definitions

  • the invention relates to a crane hoist as described in the preamble of claim 1.
  • the invention is therefore based on the object of a hoist of the type described to create a relatively low-cost yet functionally reliable load stabilization against pendulum movements.
  • the invention solves this problem by the reproduced in the characterizing part of claim 1 Features, which makes it a technically very simple, in the actual lifting device integrated load stabilization comes, with the necessary cable drain devices or rope drive devices without difficulty on a trolley or the like. can be accommodated, and this load stabilization ensures up to a maximum acceleration the immediate subsequent movement of the load depending on the crane movement.
  • the acceleration limit can be set from the hoist data, such as the rope arrangement and the maximum necessary Lift height, so that when designing the hoist on the respective Considered requirements and, for example, the size of the drain triangle accordingly the desired lifting height and acceleration limit values can be selected.
  • two cable drives are with Three rope strands each are provided, the load suspension means a common crossbar or the like.
  • the rope stabilization can also be used when using a traverse, as it occurs, for example, in magnetic crane systems, whereby the rope stabilization, the distance from each other is selected according to the requirements of the traverse, one Pendulum securing of the traverse results in which securing is independent of the center of gravity the combination of traverse and load comes into effect and also a twisting of the Traverse around a vertical axis prevented.
  • Crane hoist comprises three rope strands 2, 3, 4, who carry a load suspension device 5, for example a crane hook 6, at the load-side end.
  • the three rope strands 2, 3, 4 are wound on a common rope drum 7, the two outer rope strands 3, 4 from the rope drum via pulleys 8, 9 to the load handling device 5 lead, the middle rope strand 2, however, directly down from the rope drum 7 leads.
  • the drain points 10, 11, 12 of the rope strands 2, 3, 4 from the rope drum 7 or the deflection rollers 8, 9 form an equilateral triangle D and the center lines of the Rope strands 2, 3, 4 define a three-sided pyramid P, which points downwards, whose tip S on the vertical line of gravity L of the load handling device 5 and approximately in the The height of its focus is.
  • This three-strand guide of the cable drive 1 results in a particularly simple manner Functionally reliable load stabilization against undesired pendulum movements, so that during conveyor movements a crane system equipped with such a cable drive 1 in any Direction the load hanging on the load handler immediately follows the driving movements, as long as certain acceleration limits are not exceeded.
  • all three rope strands 2, 3, 4 are from the rope drum 7 via deflection rollers 8, 9, 15 to the load suspension device 5 to larger Allow rope migration at low slip angles.
  • the cable strands 2, 3, 4 can also each over two deflection pulleys lined up in series, for example only the middle rope strand leads over two deflection rollers 17, 18 arranged in series (Fig. 3) or all three strands of rope via respective pulleys 17, 18; 8, 19; 9, 20 lead down to the load handling device 5 and in each case the drainage points of the last deflection rollers define the drain triangle.
  • the two rope drives 1, 21 are wound on a common cable drum 7, with which a parallel operation of the two cable drives 1, 21 takes place and the crossbar is raised parallel to itself and is lowered.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The run-out positions (10,11,12) of the cable strands (2,3,4) from the drums (7) or rollers (9) form an equilateral triangle (D) and the centre lines of the downwardly guided cable strands determine a three-sided pyramid (P) with its point (S) directed downwards. The point of the pyramid lies on the vertical gravity line (L) of the load accommodation device (6) and preferably in the height area of its centre of gravity.

Description

Die Erfindung bezieht sich auf ein Kranhubwerk wie im Oberbegriff des Anspruches 1 beschrieben.The invention relates to a crane hoist as described in the preamble of claim 1.

Aus der DE-C 240 627 ist ein derartiges Kranhubwerk schon bekannt, das zwecks Vermeidung des Pendelns der Last beim Hebevorgang, bei diesem Kranhubwerk wird ein ein Lastorgan tragender Rahmen durch zumindest 3 nach oben auseinander laufende Seilstränge zur Durchführung einer Hubbwegung verfahren, wobei die Seilstränge über Umlenkrollen einer gemeinsam betriebenen Seilhaspel zugeführt werden oder jedem Seilstrang eine angetriebenen Haspel zugeordnet ist. Nachteilig ist bei dieser Ausführung ein hoher mechanischer Aufwand um jeden der Seilstränge über eine Umlenkrolle der Seilhaspel zuzuführen bzw eine aufwendige Antriebssteuerung.From DE-C 240 627 is a Such a crane hoist is already known, in order to prevent the load from swinging during the lifting process, in this crane hoist a frame carrying a load element is lifted upwards by at least 3 move diverging rope strands to perform a stroke movement, whereby the rope strands are fed via pulleys to a jointly operated rope reel or a driven reel is assigned to each rope strand. A disadvantage of this version a high mechanical effort around each of the rope strands via a pulley to feed the cable reel or a complex drive control.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Hubwerk der eingangs geschilderten Art zu schaffen, das eine verhältnismäßig aufwandsarme und doch funktionssichere Laststabilisierung gegen Pendelbewegungen mit sich bringt.The invention is therefore based on the object of a hoist of the type described to create a relatively low-cost yet functionally reliable load stabilization against pendulum movements.

Die Erfindung löst diese Aufgabe durch die im Kennzeichenteil des Anspruches 1 wiedergegebenen Merkmalen, wodurch es zu einer technisch sehr einfachen, in die eigentliche Hubeinrichtung integrierten Laststabilisierung kommt, wobei sich die dazu erforderlichen Seilablaufeinrichtungen bzw. Seiltriebeinrichtungen ohne Schwierigkeiten auf einer Laufkatze od. dgl. unterbringen lassen, und diese Laststabilisierung gewährleistet bis zu einer maximalen Beschleunigung die unmittelbare Folgebewegung der Last in Abhängigkeit von der Kran-Fahrbewegung. Bei Überschreiten des Beschleunigungsgrenzwertes reichen dann die Stabilisierungskräfte durch die Seilstränge zwar nicht mehr aus und die Last könnte durch eine Lokkerung zumindest eines Seilstranges zu pendeln beginnen, doch läßt sich der Beschleunigungsgrenzwert aus den Hubwerksdaten, wie der Seilstranganordnung und der maximal notwendigen Hubhöhe, ermitteln, so daß bei der Auslegung des Hubwerkes auf die jeweiligen Erfordernissen Rücksicht genommen und beispielsweise die Größe des Ablaufdreieckes entsprechend der gewünschten Hubhöhe und Beschleunigungsgrenzwerte gewählt werden kann.The invention solves this problem by the reproduced in the characterizing part of claim 1 Features, which makes it a technically very simple, in the actual lifting device integrated load stabilization comes, with the necessary cable drain devices or rope drive devices without difficulty on a trolley or the like. can be accommodated, and this load stabilization ensures up to a maximum acceleration the immediate subsequent movement of the load depending on the crane movement. If the acceleration limit is exceeded, the stabilizing forces are sufficient through the rope strands no longer and the load could be due to a locomotive at least one rope strand begin to oscillate, but the acceleration limit can be set from the hoist data, such as the rope arrangement and the maximum necessary Lift height, so that when designing the hoist on the respective Considered requirements and, for example, the size of the drain triangle accordingly the desired lifting height and acceleration limit values can be selected.

Von Vorteil ist auch eine Weiterbildung nach Anspruch 2, wodurch auch auf die hängende Last selbst eine stabilisierende Wirkung ausgeübt und ein Pendeln der Last um das Lastaufnahmemittel erschwert wird. Also advantageous is a further development according to claim 2, which also applies to the hanging load itself has a stabilizing effect and a swinging of the load around the load handler is difficult.

Nach einer zusätzlichen Weiterbildung der Erfindung gemäß Anspruch 3, sind zwei Seiltriebe mit jeweils drei Seilsträngen vorgesehen , deren Lastaufnahmemittel eine gemeinsame Traverse od. dgl. aufweisen. Damit läßt sich die Seilstabilisierung auch beim Einsatz einer Traverse, wie sie beispielsweise bei Magnetkrananlagen vorkommt, einsetzen, wobei die Seilstabilisierungen, deren Abstand voneinander nach den Erfordernissen der Traverse gewählt wird, eine Pendelsicherung der Traverse ergeben, welche Sicherung unabhängig vom Lastschwerpunkt der Kombination aus Traverse und Last voll zur Wirkung kommt und auch ein Verdrehen der Traverse um eine Vertikalachse verhindert.According to an additional development of the invention according to claim 3, two cable drives are with Three rope strands each are provided, the load suspension means a common crossbar or the like. This means that the rope stabilization can also be used when using a traverse, as it occurs, for example, in magnetic crane systems, whereby the rope stabilization, the distance from each other is selected according to the requirements of the traverse, one Pendulum securing of the traverse results in which securing is independent of the center of gravity the combination of traverse and load comes into effect and also a twisting of the Traverse around a vertical axis prevented.

Vorteilhaft sind auch Weiterbildungen gemäß den Ansprüchen 4 und 5, wodurch auf rationelle Weise ein zu sich paralleles Heben und Senken der Traverse erreicht wird, sind für die Seilstränge beider Seiltriebe hingegen jeweils eigene, für sich antreibbare Seiltrommeln vorgesehen, kann bei der Hubbewegung auch für eine Schrägstellung der Traverse oder eine ähnliche zusätzliche Hubbewegung gesorgt werden.Further developments are also advantageous according to claims 4 and 5, which leads to rational How a parallel lifting and lowering of the traverse is achieved is for the Rope strands of both rope drives, on the other hand, each have their own drivable rope drums, can also be used for an inclined position of the traverse or a similar additional lifting movement can be provided.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise veranschaulicht, und zwar zeigen

Fig. 1
ein erfindungsgemäßes Kranhubwerk in einem Funktionsschema;
Fig. 2 bis 4
Ausführungsbeispiele eines Kranhubwerkes, gemäß dem Stand der Technik;
Fig. 5
eine andere Ausbildung des erfindungsgemäßen Kranhubwerkes in schematischer Darstellung;
The subject matter of the invention is illustrated in the drawing, for example, and shows
Fig. 1
an inventive crane hoist in a functional diagram;
2 to 4
Embodiments of a crane hoist, according to the prior art;
Fig. 5
another embodiment of the crane hoist according to the invention in a schematic representation;

Ein Seiltrieb eines in der Figur 1 nicht weiter dargestellten erfindungsgemäßen Kranhubwerkes umfaßt drei Seilstränge 2, 3, 4, die am lastseitigen Ende ein Lastaufnahmemittel 5, beispielsweise eine Kranhaken 6 tragen. Die drei Seilstränge 2, 3, 4 sind auf einer gemeinsamen Seiltrommel 7 gewickelt, wobei die beiden äußeren Seilstränge 3, 4 von der Seiltrommel über Umlenkrollen 8, 9 zum Lastaufnahmemittel 5 führen, der mittlere Seilstrang 2 hingegen direkt von der Seiltrommel 7 abwärts führt. Die Ablaufstellen 10, 11, 12 der Seilstränge 2, 3, 4 von der Seiltrommel 7 bzw. den Umlenkrollen 8, 9 bilden ein möglichst gleichseitiges Dreieck D und die Mittellinien der Seilstränge 2, 3, 4 bestimmen eine mit der Spitze abwärts gerichtete dreiseitige Pyramide P, deren Spitze S auf der vertikalen Schwerlinie L des Lastaufnahmemittels 5 und etwa in der Höhe dessen Schwerpunktes liegt.A cable drive of a not shown in Figure 1 Crane hoist according to the invention comprises three rope strands 2, 3, 4, who carry a load suspension device 5, for example a crane hook 6, at the load-side end. The three rope strands 2, 3, 4 are wound on a common rope drum 7, the two outer rope strands 3, 4 from the rope drum via pulleys 8, 9 to the load handling device 5 lead, the middle rope strand 2, however, directly down from the rope drum 7 leads. The drain points 10, 11, 12 of the rope strands 2, 3, 4 from the rope drum 7 or the deflection rollers 8, 9 form an equilateral triangle D and the center lines of the Rope strands 2, 3, 4 define a three-sided pyramid P, which points downwards, whose tip S on the vertical line of gravity L of the load handling device 5 and approximately in the The height of its focus is.

Durch diese Dreistrangführung des Seiltriebes 1 ergibt sich auf besonders einfache Weise eine funktionssichere Laststabilisierung gegen unerwünschte Pendelbewegungen, so daß bei Förderbewegungen einer mit einem solchen Seiltrieb 1 ausgestatteten Krananlage in beliebiger Richtung die am Lastaufnahmemittel hängende Last den Fahrbewegungen unmittelbar nachfolgt, so lange bestimmte Beschleunigungsgrenzwerte nicht überschritten werden.This three-strand guide of the cable drive 1 results in a particularly simple manner Functionally reliable load stabilization against undesired pendulum movements, so that during conveyor movements a crane system equipped with such a cable drive 1 in any Direction the load hanging on the load handler immediately follows the driving movements, as long as certain acceleration limits are not exceeded.

Bei der Hubbewegung des Seiltriebes 1 entstehen durch das Auf- bzw. Abwickeln der Seilstränge von der Seiltrommel 7 axial ausgerichtete Seilwanderungen w, die zu entsprechenden Ablenkungen der Seilstränge (strichpunktierte Lage) führen. Um dabei die Schräglaufwinkel α bezüglich den Umlenkrollen 8, 9 möglichst gering zu halten, sind die Umlenkrollen 8, 9 entsprechend weit von der Seiltrommel entfernt. Außerdem sind sie gelenkig gelagert, wobei die Lagerung 13, 14 eine Schwenkbewegung um eine zur Seiltrommelachse T normale Schwenkachse A ermöglichen, so daß es unabhängig von der Hubhöhe stets zu einem exakten Seilablauf über die Umlenkrollen kommt.During the lifting movement of the cable drive 1 arise from the winding or unwinding Ropes from the rope drum 7 axially aligned rope walks w to corresponding Deflect the rope strands (dash-dotted position). To do the Skew angle α with respect to the deflection rollers 8, 9 are to be kept as small as possible the deflection rollers 8, 9 correspondingly far from the cable drum. Also are they are articulated, the bearing 13, 14 a pivoting movement to one Rope drum axis T allow normal pivot axis A, so that it is independent of the lifting height always leads to an exact cable run over the pulleys.

Beim Ausführungsbeispiel gemäß Fig. 2 sind alle drei Seilstränge 2, 3, 4 von der Seiltrommel 7 über Umlenkrollen 8, 9, 15 zum Lastaufnahmemittel 5 geführt, um größere Seilwanderungen bei geringen Schräglaufwinkeln zuzulassen. Hier wird das obere Ablaufdreieck D durch die Ablaufstellen 11, 12 und 16 der Seilstränge von den Umlenkrollen 8, 9, 15 bestimmt.In the embodiment shown in FIG. 2, all three rope strands 2, 3, 4 are from the rope drum 7 via deflection rollers 8, 9, 15 to the load suspension device 5 to larger Allow rope migration at low slip angles. Here is the top drain triangle D through the drainage points 11, 12 and 16 of the rope strands from the deflection rollers 8, 9, 15 determined.

Wie in Fig. 3 und 4 gemäß dem Stand der Technik veranschaulicht, können die Seilstränge 2, 3, 4 auch jeweils über zwei hintereinandergereihte Umlenkrollen geführt sein, wobei beispielsweise nur der mittlere Seilstrang über zwei hintereinandergereihte Umlenkrollen 17, 18 führt (Fig. 3) oder alle drei Seilstränge über jeweils hintereinandergereihte Umlenkrollen 17, 18; 8, 19; 9, 20 abwärts zum Lastaufnahmemittel 5 führen und dabei jeweils die Ablaufstellen der letzten Umlenkrollen das Ablaufdreieck definieren.As illustrated in FIGS. 3 and 4 in accordance with the prior art, the cable strands 2, 3, 4 can also each over two deflection pulleys lined up in series, for example only the middle rope strand leads over two deflection rollers 17, 18 arranged in series (Fig. 3) or all three strands of rope via respective pulleys 17, 18; 8, 19; 9, 20 lead down to the load handling device 5 and in each case the drainage points of the last deflection rollers define the drain triangle.

Bei dem erfindungsgemäßen Ausführungsbeispiel nach Fig. 5 sind zwei Seiltriebe 1, 21 mit jeweils drei Seilsträngen 2, 3, 4; 22, 23, 24 vorgesehen, deren Lastaufnahmemittel 5, 25 eine gemeinsame Traverse 26 aufweisen, wie das beispielsweise bei Magnetkränen der Fall ist, um auch für solche Traversen eine Pendelsicherung zu erreichen. Die beiden Seiltriebe 1, 21 sind auf einer gemeinsamen Seiltrommel 7 gewickelt, womit ein Parallelbetrieb der beiden Seiltriebe 1, 21 erfolgt und die Traverse zu sich parallel gehoben und gesenkt wird. Es ist aber auch möglich, die Seiltrommel 7 in zwei Teiltrommeln zu teilen und diese mit jeweils einem eigenen Antrieb auszustatten, so daß die Seiltriebe 1, 21 unterschiedlich betätigt werden können und auch eine Schrägstellung der Traverse zu erreichen ist.5 are two cable drives 1, 21, each with three Ropes 2, 3, 4; 22, 23, 24 provided, the load suspension means 5, 25 a common Traverse 26 have, as is the case for example with magnetic cranes is to achieve a pendulum protection for such trusses. The two rope drives 1, 21 are wound on a common cable drum 7, with which a parallel operation of the two cable drives 1, 21 takes place and the crossbar is raised parallel to itself and is lowered. However, it is also possible to divide the cable drum 7 into two partial drums and to equip them with their own drives, so that the cable drives 1, 21st can be operated differently and also incline the crossbar to achieve.

Claims (5)

  1. Crane hoist unit with at least one cable drive (1) and a load-bearing means (5) which can be attached to the cable drive, which cable drive (1) has three cable strands (2, 3, 4) which are guided downwards towards the load-bearing means (5) by mutually spaced cable unreeling devices, preferably cable reels (7), pulley blocks (8, 9) or similar, the unreeling points (10, 11, 12) of the cable strands (2, 3, 4) from the cable unreeling devices forming an essentially equilateral triangle (D) and the mid-lines of the downwardly guided cable strands (2, 3, 4) define an essentially regular pyramid (P) with a downwardly directed apex (S), the three cable strands (2, 3, 4) being reeled on a common cable reel (7) or on three coaxial, individual cable reels drivingly linked to one another with a view to achieving identical cable speeds, and the two outer cable strands (3, 4) run from the cable reels (7) to the load-bearing means (5) via articulatingly mounted pulley blocks (8, 9), characterised in that the middle cable strand (2) runs directly down from the cable reel (7) to the load-bearing means (5).
  2. Crane hoist unit as claimed in claim 1, characterised in that the apex (S) of the pyramid (P) lies on the vertical gravity line (L) of the load-bearing means (6) and preferably at a height on a level with its centre of gravity.
  3. Crane hoist unit as claimed in claim 1 or 2, characterised in that two cable drives (1, 21) are provided, each with three cable strands (2, 3, 4; 22, 23, 24), the load-bearing means (5, 25) of which have a common crossbeam (26) or similar.
  4. Crane hoist unit as claimed in claim 3, characterised in that the cable strands (2, 3, 4; 22, 23, 24) of the two cable drives (1, 21) are wound on a common cable reel (7).
  5. Crane hoist unit as claimed in claim 3, characterised in that separate individually driveable cable reels are provided for the cable strands (2, 3, 4; 22, 23, 24) of both cable drives (1, 21).
EP98890071A 1998-03-13 1998-03-13 Crane hoist unit Expired - Lifetime EP0941959B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98890071A EP0941959B1 (en) 1998-03-13 1998-03-13 Crane hoist unit
AT98890071T ATE267138T1 (en) 1998-03-13 1998-03-13 CRANE HOIST
DE59811423T DE59811423D1 (en) 1998-03-13 1998-03-13 Hoist

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98890071A EP0941959B1 (en) 1998-03-13 1998-03-13 Crane hoist unit

Publications (2)

Publication Number Publication Date
EP0941959A1 EP0941959A1 (en) 1999-09-15
EP0941959B1 true EP0941959B1 (en) 2004-05-19

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ID=8237153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98890071A Expired - Lifetime EP0941959B1 (en) 1998-03-13 1998-03-13 Crane hoist unit

Country Status (3)

Country Link
EP (1) EP0941959B1 (en)
AT (1) ATE267138T1 (en)
DE (1) DE59811423D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2703332A1 (en) 2012-08-30 2014-03-05 Scheffer Krantechnik GmbH Crane hoist

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10135034C1 (en) * 2001-07-18 2002-10-31 Demag Cranes & Components Gmbh Lifting gear with a cable arrangement for the suspension of slinging means, in particular for a traveling crane with a crab
CN104444772A (en) * 2014-11-03 2015-03-25 无锡市百顺机械厂 Lifting tool
CN104444770A (en) * 2014-11-03 2015-03-25 无锡市百顺机械厂 Lifting tool
CN110451405A (en) * 2019-06-28 2019-11-15 佳力机械股份有限公司 Crane loop chain only shakes device and loop chain lifting equipment
CN114380224B (en) * 2022-01-10 2024-04-26 浙江经典建设有限公司 Hoisting device for building

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Publication number Priority date Publication date Assignee Title
DE240627C (en) *
US2805781A (en) * 1955-01-24 1957-09-10 Arthur L Senn Load stabilized crane
GB1002758A (en) * 1962-11-20 1965-08-25 C H Wheeler Mfg Co Anti-pendulation device for jig cranes
US3107791A (en) * 1962-11-26 1963-10-22 Lake Shore Inc Load handling apparatus
FR2164504B1 (en) * 1971-12-23 1976-06-04 Casteran Jean
DE3717890A1 (en) * 1987-05-27 1988-12-15 Weingarten Gunter Swell-following apparatus
DE4126508A1 (en) * 1991-08-07 1993-02-11 Mannesmann Ag Double winch crane for backlash-free lifting and cross travel - has ropes over diverter-sheaves on crab to lifting device to operate both cross travel and lift load

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2703332A1 (en) 2012-08-30 2014-03-05 Scheffer Krantechnik GmbH Crane hoist

Also Published As

Publication number Publication date
DE59811423D1 (en) 2004-06-24
ATE267138T1 (en) 2004-06-15
EP0941959A1 (en) 1999-09-15

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