EP2435352B1 - Traveling crane having traveler and hoisting winch - Google Patents

Traveling crane having traveler and hoisting winch Download PDF

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Publication number
EP2435352B1
EP2435352B1 EP10742452A EP10742452A EP2435352B1 EP 2435352 B1 EP2435352 B1 EP 2435352B1 EP 10742452 A EP10742452 A EP 10742452A EP 10742452 A EP10742452 A EP 10742452A EP 2435352 B1 EP2435352 B1 EP 2435352B1
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EP
European Patent Office
Prior art keywords
cable
trolley
winch
drums
rope
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EP10742452A
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German (de)
French (fr)
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EP2435352A1 (en
Inventor
Stefan Noll
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Demag Cranes and Components GmbH
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Demag Cranes and Components GmbH
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Publication of EP2435352A1 publication Critical patent/EP2435352A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B66D1/39—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of axially-movable drums or barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/12—Driving gear incorporating electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/01—General aspects of mobile cranes, overhead travelling cranes, gantry cranes, loading bridges, cranes for building ships on slipways, cranes for foundries or cranes for public works
    • B66C2700/012—Trolleys or runways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0125—Motor operated winches
    • B66D2700/0166—Winches with multiple drums or with drums with multiple parts of different diameter

Definitions

  • the invention relates to an overhead crane with a movable rail on rails longitudinal member along which a trolley in a transverse direction is movable, which comprises exactly two cable winches each having a cable drum, wherein the cable drums each having an axis of rotation which extend transversely to the transverse direction, and wherein the Cable drums are arranged parallel and at a distance next to one another and can be operated in the opposite direction of rotation for lifting and lowering a load.
  • Such overhead cranes are characterized by one or two carriers, which are movable at their ends on trolleys on rails. These rails are arranged for example in halls on the long sides in the ceiling.
  • On or on the longitudinal member is transversely movable to the direction of travel of the longitudinal beam a crane trolley, on which a winch is mounted.
  • winches essentially consist of a cable drum, which is driven by a gear and an electric motor in lifting and lowering.
  • the rope is sheared.
  • an 80/2 winch uses an 8/2 reeving, or a 12/2 reeving uses a 150 ton winch.
  • Such shearing result in that the load hook is designed as a bottom block and in the winch upper bottles in the form of pivotally suspended sheaves are available.
  • an 8/2 reeving a two-reel cable drum with counter-rotating rope grooves is used, from which run the two ends of a rope, which are led over three upper bottles and four sheaves in the area of the lower bottle.
  • the cable drum diameter is increased.
  • a larger cable drum diameter causes a larger transmission output torque.
  • a maximum transmission output torque of a transmission can thus limit the maximum possible load of the winch.
  • the rope is subjected to great stress. This leads to a reduction of the rope life and also the life of the cable drum and all pulleys. Also, a theoretical calculation of the rope life by the existing Seilablenkwinkel that changes along the longitudinal direction of the cable drum, difficult.
  • stage winches are used for raising and lowering curtains and backdrops.
  • the curtains or backdrops are hung over several ropes at several points along the width of a stage.
  • the ropes In order to achieve a uniform lifting and lowering of the curtains and backdrops, the ropes must be synchronously wound or unwound by the winch.
  • winches therefore have juxtaposed winches, which are mounted on a common drum shaft.
  • the drum shaft is in this case driven by one or more electric drive motors via a transmission.
  • the entire winch is arranged on a drum carriage, which is displaceable in the longitudinal direction of the drum axis with respect to a fixed support frame of the winch.
  • This ensures that the respective cable running off the cable drum runs into the deflection roller at approximately right angles to the axis of rotation of the deflection roller.
  • An extension or shortening of the rope length between the rope outlet point of the cable drum and the guide roller thus does not occur, whereby no consequent fluctuation of the lifting and lowering speed occurs.
  • German Auslegeschrift 1 192 381 B describes an overhead crane with a trolley, which comprises four cable winches each having a cable drum. About each of the rope drums a rope is wound up and unwound, which is attached in each case with its free end via a hook on a load-carrying means. The running of the rope drums ropes are each guided over a pulley. So that the cables meet the deflection pulley in a constant rope outlet angle, the migration of the cable outlet points of the cables along the cable drums is compensated by the cable drums being displaced along the axes of rotation supporting them by the corresponding cable forces acting on the cable drums.
  • the European patent application EP 0 571 207 A1 relates to a cable guide device for multilayer winding and unwinding of a rope on a cable drum of a winch.
  • the cable drum is mounted on a carriage. So that the rope outlet point for an orderly winding of the rope remains constant in the region of the guide rollers, the carriage is movable along two rails via rollers relative to a stationary arrangement of guide rollers. The method of carriage is also effected by the rope forces occurring.
  • a traveling crane with a longitudinal member movable on rails, along which a trolley can be moved in a transverse direction
  • the cable drums each have an axis of rotation transverse to the transverse direction
  • the Cable drums are arranged parallel and spaced next to each other and in opposite directions for lifting and lowering a load operable
  • an improved construction achieved by the fact that the two cable drums each have exactly one rope groove and the rope grooves are formed in opposite directions, of the two cable drums exactly one common and on at least one Unterflasche sheared rope up and is unwound, on the trolley a cable winch is arranged, the two winches are arranged on the cable winch and the winch cat about trolleys on a cross member of the trolley in a transverse z u the transverse direction running Seilwindenfahrraum is movable, the winches by means of the cable winch relative to the trolley are moved in such a way that in each
  • the life of the rope and the cable drum or existing on the cable drum rope grooves is increased. Since a maximum permissible cable deflection angle is a factor limiting the length of the cable drum, the length of the cable drum can now be increased without the cable outlet point migration according to the invention and thus the diameter of the cable drum can be reduced. Along with the reduction in diameter is a decrease in the maximum transmission output torque, so that the transmission can be made smaller or a standard transmission can be used for a wider range of payloads within a cable train series. An automatic fixation of the Seilablaufticians by controlling the suspension drives is particularly advantageous.
  • the FIG. 1 shows a view of a crane 1, which can be operated in a hall or outdoors.
  • the overhead crane 1 has a longitudinal member 3 in the usual way, the in FIG. 1 only partially shown with its right end portion.
  • the longitudinal member 3 is movable at its two opposite ends via trolleys 4 on rails 5 in the longitudinal direction L.
  • the rails 5 are mounted on brackets 6 on a wall of a hall, preferably in the area of the ceiling of this hall, or raised by means not shown supports.
  • On the longitudinal member 3 and on the longitudinal member 3 is a trolley 7 along the longitudinal member 3 in a transverse direction Q movable.
  • the transverse direction Q is perpendicular to the longitudinal direction L.
  • the trolley 7 consists essentially of a frame 8, which are movable on trolleys 9 on the longitudinal member 3, and two winches 10.
  • On one of the two winches 10 running rope 11 is a lower block 12th suspended with a load hook 13.
  • the rope 11 is reeved, so that in the region of the trolley 7, not shown, upper bottles are arranged. In the present case, three upper bottles are present, since an 8/1 reeving is provided for two winches 10, ie a 2x8 / 1 reeving.
  • FIG. 2 shows a perspective detail view of FIG. 1 from the area of the trolley 7 and in particular its structure according to the present invention.
  • the Trolley 7 is distinguished from the trolleys known from the prior art by the fact that a further cable winch 15 is provided in order to move the winches 10 not only in the transverse direction Q along the longitudinal member 3 of the trolley 1 but also independently of the longitudinal members. 3 in a Seilwindenfahrcardi S, which extends at right angles to the transverse direction Q and substantially parallel to the longitudinal direction L.
  • the FIG. 2 shows that the overhead crane 1 is a so-called double-girder overhead crane with two parallel and spaced-apart longitudinal members 3.
  • This construction is mainly for overhead cranes 1 for high loads instead.
  • the overhead crane 1 shown here is designed for loads in the range 50 to 200 t.
  • rails 16 are fixed, on which the trolley 7 rolls with their trolleys 9.
  • the running gears 9 are fastened to a rectangular frame 8 of the trolley 7.
  • the frame 8 has two parallel and spaced-apart cross member 8a, on which in turn rails 17 are attached. These rails 17 extend in Seilwindenfahrraum S and thus transversely to the transverse direction Q of the side members 3.
  • the cable winch 15 is movable in Seilwindenfahrcardi S on other trolleys 18.
  • the structure of the cable winch 15 is quite comparable to that of conventional crane trolleys.
  • the two winches 10 are mounted on a cat frame 19 of the cable winch 15, the two winches 10 are mounted.
  • the winches 10 are made in conventional construction essentially of a cable drum 21 which is rotatably mounted about a rotation axis D on the cat frame 19.
  • the axis of rotation D in this case runs parallel to the cable winch driving direction S and substantially horizontally.
  • the axes of rotation D of the two cable drums 21 are arranged in a common vertical plane.
  • the drive of the cable drums 21 takes place via an electric motor 22, which is connected to the cable drum 21 via a gear 23 supported on the cat frame 19.
  • the cable drums 21 are provided with side grooves 24, of which only a portion with the length of the circumference of the side drum 21 is shown schematically.
  • the cable drums 21 are designed as so-called monotone cable drums 21. According to the used 2 x 8/1-Einscherung 21 of the two cable drums only a common cable 11 is wound or unwound. In this case, the cable grooves 24 run in opposite directions. Since the two cable drums 21 each for lifting a load or lowering a load with opposite direction of rotation operated, the rope 11, which runs between the two cable drums 21, in the desired manner up or unwound.
  • FIG. 3 is a plan view of the overhead crane 1 according to the invention from the area of the trolley 7 shown.
  • the mutually spaced and parallel side members 3 of the double-girder overhead traveling crane are clearly visible.
  • the lower trolley 7 and the upper cat 15 form a kind of cross-cat, since the winches 10 by means of the trolley 7 not only in the transverse direction Q along the side members 3 are movable but by means of the cable winch 15 in Seilwindenfahrcardi S. across this.
  • the Seilwindenfahrides S and the transverse direction Q extend substantially horizontally in the vertically spaced-apart planes.
  • FIG. 3 can be seen schematically that along the cable drums 21 rope grooves 24 extend in which the rope 11 is single-layer up and unwound.
  • the cable 11 is almost half unwound from the cable drums 21 and the bottom block 12 with the load hook 13 is in a middle position.
  • the cable outlet points 20 of the cables are in the region of the middle of the cable drums 21. Accordingly, the cable winch 15 is seen on the trolley 7 in Seilwindenfahrcardi S in a central position. If now the bottom block 12 are lowered, the rope outlet points 20 in the direction of the cable winch travel direction S to the right.
  • the entire cable winch 15 with the winches 10 in the FIG. 3 move to the left along the rails 17.
  • the electric motors 22 for the cable drums 21 are so connected to a drive not shown for the chassis 18 via a controller, not shown, that the cable drain point 20 despite wandering the cable grooves 24 along the cable drum 21 at a position with respect to the longitudinal direction of the cable drums 21st remains.
  • FIG. 4 shows a side view of FIG. 3 , Here is particularly good to see that the cable winch 15 is supported on the longitudinal members 3 via the trolley 7.
  • only one strand of rope 11 is shown schematically, although according to the selected reeving 2 x 8/1 a total of 8 rope strands 11 expire.
  • the four cable discharge points 20 were taken together on a cable drum 21 with respect to the longitudinal extent of the cable drum 21 to a cable discharge point 20 in the middle of the four cable discharge points.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)

Description

Die Erfindung betrifft einen Laufkran mit einem an Schienen verfahrbaren Längsträger, an dem entlang eine Laufkatze in einer Querrichtung verfahrbar ist, die genau zwei jeweils eine Seiltrommel aufweisende Seilwinden umfasst, wobei die Seiltrommeln jeweils eine Drehachse aufweisen, die quer zur Querrichtung verlaufen, und wobei die Seiltrommeln parallel und mit Abstand nebeneinander angeordnet und in gegenläufiger Drehrichtung zum Heben und Senken einer Last betreibbar sind.The invention relates to an overhead crane with a movable rail on rails longitudinal member along which a trolley in a transverse direction is movable, which comprises exactly two cable winches each having a cable drum, wherein the cable drums each having an axis of rotation which extend transversely to the transverse direction, and wherein the Cable drums are arranged parallel and at a distance next to one another and can be operated in the opposite direction of rotation for lifting and lowering a load.

Es sind allgemein Laufkrane zum Heben und Senken von Lasten bekannt. Derartige Laufkrane zeichnen sich durch einen oder zwei Träger auf, die an ihren Enden über Fahrwerke auf Schienen verfahrbar sind. Diese Schienen sind beispielsweise in Hallen an deren Längsseiten im Bereich der Decken angeordnet. Auf oder an dem Längsträger ist quer zur Fahrtrichtung des Längsträgers eine Krankatze verfahrbar, auf der eine Seilwinde gelagert ist. Derartige Seilwinden bestehen im Wesentlichen aus einer Seiltrommel, die über ein Getriebe und einen Elektromotor in Hub- und Senkrichtung angetrieben wird. Um mit einer derartigen Seilwinde große Traglasten wie beispielsweise 80 t oder 150 t heben zu können, wird üblicherweise das Seil eingeschert. Dies hat überwiegend wirtschaftliche Gründe, da eine Einscherung gegenüber einer entsprechenden Dimensionierung des Getriebes, die eine Funktion von Seilkraft und Trommeldurchmesser ist, günstiger ist. Üblicherweise wird beispielsweise bei einer 80 t-Seilwinde eine 8/2-Einscherung verwendet oder bei einer 150 t-Seilwinde eine 12/2-Einscherung verwendet. Derartige Einscherungen führen dazu, dass der Lasthaken als Unterflasche ausgebildet ist und im Bereich der Seilwinde Oberflaschen in Form von schwenkbar aufgehängten Seilscheiben vorhanden sind. Bei einer 8/2-Einscherung kommt eine zweirillige Seiltrommel mit gegenläufigen Seilrillen zur Anwendung, von denen die beiden Enden eines Seiles ablaufen, die insgesamt über drei Oberflaschen und vier Seilscheiben im Bereich der Unterflasche geführt werden. Da im Bereich der Unterflasche insgesamt 8 Seilstränge zu- bzw. abgeführt werden und von der Seiltrommel zwei Seilstränge auf- bzw. abgewickelt werden, spricht man von einer 8/2-Einscherung. Eine Verwendung von zwei angetriebenen Seilsträngen einer Seiltrommel die von gegenläufigen Seilrillen ablaufen hat den Vorteil, dass die Unterflasche beim Hub- und Senkvorgang sich nur in Hub- und Senkrichtung bewegt und nicht entlang der Drehachse der Seiltrommel wandert. Die vorbeschriebenen großen Einscherungen von 8/2 oder 12/2 bedingen aber auch entsprechend größere Seillängen. Hierdurch muss eine entsprechend lange Seiltrommel vorgesehen werden bzw. deren Durchmesser größer gewählt werden. Die Länge der Seiltrommel ist jedoch durch den maximal zulässigen Ablenkwinkel quer zur Längsrichtung der Seiltrommel begrenzt. In der Regel wird daher der Seiltrommeldurchmesser vergrößert. Ein größerer Seiltrommeldurchmesser bedingt ein größeres Getriebeabtriebsmoment. Ein maximales Getriebeabtriebsmoment eines Getriebes kann somit die maximal mögliche Traglast der Seilwinde begrenzen. Auch wird bei großen Seilablenkwinkeln das Seil einer großen Beanspruchung ausgesetzt. Dies führt zu einer Verminderung der Seillebensdauer und auch der Lebensdauer der Seiltrommel und sämtlicher Umlenkrollen. Auch wird eine theoretische Berechnung der Seillebensdauer durch den vorhandenen Seilablenkwinkel, der sich entlang der Längsrichtung der Seiltrommel ändert, erschwert.There are generally known overhead cranes for lifting and lowering loads. Such overhead cranes are characterized by one or two carriers, which are movable at their ends on trolleys on rails. These rails are arranged for example in halls on the long sides in the ceiling. On or on the longitudinal member is transversely movable to the direction of travel of the longitudinal beam a crane trolley, on which a winch is mounted. Such winches essentially consist of a cable drum, which is driven by a gear and an electric motor in lifting and lowering. In order to be able to lift large loads such as 80 t or 150 t with such a winch, usually the rope is sheared. This has mainly economic reasons, as a reeving against a corresponding dimensioning of the transmission, which is a function of cable strength and drum diameter, is cheaper. Typically, for example, an 80/2 winch uses an 8/2 reeving, or a 12/2 reeving uses a 150 ton winch. Such shearing result in that the load hook is designed as a bottom block and in the winch upper bottles in the form of pivotally suspended sheaves are available. In an 8/2 reeving, a two-reel cable drum with counter-rotating rope grooves is used, from which run the two ends of a rope, which are led over three upper bottles and four sheaves in the area of the lower bottle. Since in the area of the bottom block a total of 8 cable strands are supplied or removed and two cable strands are wound up or unwound from the cable drum, this is called an 8/2 reeving. The use of two driven cable strands of a cable drum which run off of opposite cable grooves has the advantage that the lower cylinder during lifting and lowering only moved in lifting and lowering direction and does not move along the axis of rotation of the cable drum. The above-described large shearing of 8/2 or 12/2 but also require correspondingly larger pitches. As a result, a correspondingly long cable drum must be provided or their diameter be chosen larger. However, the length of the cable drum is limited by the maximum allowable deflection angle transverse to the longitudinal direction of the cable drum. In general, therefore, the cable drum diameter is increased. A larger cable drum diameter causes a larger transmission output torque. A maximum transmission output torque of a transmission can thus limit the maximum possible load of the winch. Also, in large rope deflection angles, the rope is subjected to great stress. This leads to a reduction of the rope life and also the life of the cable drum and all pulleys. Also, a theoretical calculation of the rope life by the existing Seilablenkwinkel that changes along the longitudinal direction of the cable drum, difficult.

Des Weiteren ist aus dem deutschen Patent DE 101 17 466 B4 eine elektrische Seilwinde zur Verwendung als Bühnenwinde bekannt. Derartige Bühnenwinden werden zum Heben und Senken von Vorhänge und Kulissen verwendet. Üblicher Weise sind die Vorhänge oder Kulissen über mehrere Seile an mehreren Punkten entlang der Breite einer Bühne aufgehängt. Um ein gleichmäßiges Heben und Senken der Vorhänge und Kulissen zu erreichen, müssen die Seile von der Seilwinde synchron auf- bzw. abgewickelt werden. Derartige Seilwinden weisen daher nebeneinander angeordnete Seilwinden auf, die auf einer gemeinsamen Trommelwelle gelagert sind. Die Trommelwelle wird hierbei von einem oder mehreren elektrischen Antriebsmotoren über ein Getriebe angetrieben. Da bei einer Bühne mehrere Vorhänge und Kulissen in Bezug auf die Tiefe der Bühne gesehen mit geringem Abstand hintereinander angeordnet sind, können nicht mehrere Seilwinden hintereinander angeordnet werden, da deren Baubreite zu groß ist. Vielmehr weisen die Seilwinden hierfür je Seil mindestens eine Umlenkrolle auf, um das jeweils horizontal von der Seiltrommel ablaufende Seil in eine Vertikal-Richtung in Richtung der Bühne umzulenken. Diese Umlenkrollen sind ortsfest an einer Traverse angeordnet, die sich an der Seilwinde abstützt. Zusätzlich ist bei dieser Seilwinde vorgesehen, um ein absolut gleichmäßiges Heben und Senken der Vorhänge und Kulissen zu erreichen, dass Verlängerungen und Verkürzungen der Seillänge zwischen den Seilablaufpunkten der Seile von der jeweiligen Seiltrommel und der Umlenkrolle vermieden werden, die durch ein Wandern des Seilablaufpunktes entlang der Seiltrommel auftreten würden. Hierfür ist die gesamte Seilwinde auf einem Trommelschlitten angeordnet, der in Längsrichtung der Trommelachse in Bezug auf einen feststehenden Tragrahmen der Seilwinde verschiebbar ist. Die Verschiebung des Trommelschlittens relativ zu dem Tragrahmen und den Umlenkrollen erfolgt über einen Spindeltrieb in der Weise, dass die Verschiebung des Trommelschlittens synchron mit der Trommeldrehung um eine Verschiebedistanz von etwa einem Seildurchmesser pro Trommeldrehung erfolgt. Hierdurch wird erreicht, dass das jeweilige von der Seiltrommel ablaufende Seil in etwa rechtwinklig zur Drehachse der Umlenkrolle in die Umlenkrolle einläuft. Eine Verlängerung oder Verkürzung der Seillänge zwischen dem Seilablaufpunkt der Seiltrommel und der Umlenkrolle tritt somit nicht auf, wodurch auch keine hierdurch bedingte Schwankung der Hebe- und Senkgeschwindigkeit auftritt.Furthermore, from the German patent DE 101 17 466 B4 an electric winch known for use as a stage winch. Such stage winches are used for raising and lowering curtains and backdrops. Usually, the curtains or backdrops are hung over several ropes at several points along the width of a stage. In order to achieve a uniform lifting and lowering of the curtains and backdrops, the ropes must be synchronously wound or unwound by the winch. Such winches therefore have juxtaposed winches, which are mounted on a common drum shaft. The drum shaft is in this case driven by one or more electric drive motors via a transmission. As seen in a stage several curtains and scenes seen in relation to the depth of the stage with a small distance one behind the other, not several winches can be arranged one behind the other, since their width is too large. Rather, the winches for each rope on at least one pulley, in order to redirect each running horizontally from the cable drum rope in a vertical direction in the direction of the stage. These pulleys are fixedly arranged on a traverse, which is supported on the winch. In addition, this winch is provided to achieve an absolutely uniform lifting and lowering of the curtains and backdrops, that extensions and shortening of the rope length be avoided between the rope outlet points of the ropes of the respective cable drum and the pulley, which would occur by a wandering of the cable drain point along the cable drum. For this purpose, the entire winch is arranged on a drum carriage, which is displaceable in the longitudinal direction of the drum axis with respect to a fixed support frame of the winch. The displacement of the drum carriage relative to the support frame and the deflection rollers via a spindle drive in such a way that the displacement of the drum carriage takes place synchronously with the drum rotation by a displacement distance of about one rope diameter per drum rotation. This ensures that the respective cable running off the cable drum runs into the deflection roller at approximately right angles to the axis of rotation of the deflection roller. An extension or shortening of the rope length between the rope outlet point of the cable drum and the guide roller thus does not occur, whereby no consequent fluctuation of the lifting and lowering speed occurs.

Außerdem ist aus der japanischen Offenlegungsschrift JP 2001-2379 A ein Laufkran mit einer Laufkatze bekannt, die über Rollen auf einem Längsträger des Laufkrans verfahrbar ist. Die Laufkatze trägt in üblicher Weise eine Seilwinde mit einer Seiltrommel. Die Seilwinde und somit deren Seiltrommel ist über weitere Rollen relativ zu der Laufkatze verfahrbar. Hierbei stimmen die Fahrtrichtung der Laufkatze und die Längsrichtung der Seiltrommel überein. Die Verfahrbewegung der Seiltrommel relativ zu der Laufkatze erfolgt über einen Hydraulikzylinder. Über diese zusätzliche Verfahrbarkeit der Seiltrommel relativ zu der Laufkatze soll erreicht werden, dass der Seilablaufpunkt des Seiles in Bezug auf die Längserstreckung der Seiltrommel beim Auf- und Abwickeln des Seiles an einer Stelle bleibt.In addition, from the Japanese Patent Application JP 2001-2379 A an overhead crane with a trolley known, which is movable over rollers on a longitudinal member of the crane. The trolley carries in the usual way a winch with a cable drum. The winch and thus the rope drum is movable over other rollers relative to the trolley. In this case, the direction of travel of the trolley and the longitudinal direction of the cable drum coincide. The movement of the cable drum relative to the trolley via a hydraulic cylinder. About this additional movability of the cable drum relative to the trolley to be achieved that the cable drain point of the rope with respect to the longitudinal extent of the cable drum when winding and unwinding of the rope remains in one place.

Aus der US-Patentschrift US 5 423 438 A ist ein Laufkran mit einer Laufkatze bekannt, die zwei Seilwinden mit jeweils einer Seiltrommel umfasst. Die Seiltrommein sind parallel und zu einander beabstandet angeordnet und gegenläufig drehbar. Von den Seiltrommein sind ein erstes und zweites gemeinsames Seil auf- und abwickelbar. Die zwei Seile sind über eine erste beziehungsweise eine zweite Seilrolle einer Unterflasche eingeschert und laufen mit insgesamt vier Seilsträngen von den Seiltrommeln ab. Die Seilrollen sind in der Unterflasche über parallel zu den Drehachsen der Seiltrommein verlaufende Achsen drehbar gelagert und entlang diesen frei beweglich und verschiebbar. Die beim Auf- und Abwickeln der Seile entlang den Seiltrommeln voneinander weg oder aufeinander zu wandernden Seilablaufpunkte bewirken veränderliche Seitablaufwinkel zwischen den einzelnen Seilsträngen und den Seiltrommein beziehungsweise den Seilrollen. Durch die ablaufenden Seile werden axial wirkende Kräfte in die Seilrollen eingeleitet, die hierdurch selbsttätig den wandernden Seilablaufpunkten nachgeführt werden. Dadurch werden die Seilablaufwinkel vermindert.From the US patent US 5 423 438 A is an overhead crane with a trolley known, comprising two winches, each with a cable drum. The Seiltrommein are arranged parallel to each other and spaced from each other and rotatable in opposite directions. From the Seiltrommein a first and second common rope are wound up and unwound. The two ropes are reeved via a first or a second pulley a Unterflasche and run off with a total of four strands of rope drums. The pulleys are rotatably mounted in the lower block via parallel to the axes of rotation of Seiltrommein extending axes and along these freely movable and movable. The when winding and unwinding the ropes along the rope drums away from each other or to each other to migrate rope drain points cause variable Seitablaufwinkel between the individual strands of rope and the Seiltrommein or the pulleys. By the running ropes axially acting forces are introduced into the pulleys, which are thereby automatically tracked the wandering cable drain points. As a result, the rope outlet angle are reduced.

Die deutsche Auslegeschrift 1 192 381 B beschreibt einen Laufkran mit einer Laufkatze, die vier jeweils eine Seiltrommel aufweisende Seilwinden umfasst. Über jede der Seiltrommeln ist ein Seil auf- und abwickelbar, das jeweils mit seinem freien Ende über einen Haken an einem Lastaufnahmemittel befestigt ist. Die von den Seiltrommeln ablaufenden Seile sind jeweils über eine Umlenkrolle geführt. Damit die Seile in einem konstanten Seilablaufwinkel auf die Umlenkrolle treffen, wird das Wandern der Seilablaufpunkte der Seile entlang der Seiltrommeln ausgeglichen, indem die Seiltrommeln entlang der sie tragenden Drehachsen durch die entsprechend auf die Seiltrommeln wirkenden Seilkräfte verschoben werden.German Auslegeschrift 1 192 381 B describes an overhead crane with a trolley, which comprises four cable winches each having a cable drum. About each of the rope drums a rope is wound up and unwound, which is attached in each case with its free end via a hook on a load-carrying means. The running of the rope drums ropes are each guided over a pulley. So that the cables meet the deflection pulley in a constant rope outlet angle, the migration of the cable outlet points of the cables along the cable drums is compensated by the cable drums being displaced along the axes of rotation supporting them by the corresponding cable forces acting on the cable drums.

Die europäische Patentanmeldung EP 0 571 207 A1 betrifft eine Seilführungsvorrichtung zum mehrlagigen Auf- und Abwickeln eines Seils auf eine Seiltrommel einer Seilwinde. Die Seiltrommel ist auf einem Schlitten befestigt. Damit der Seilablaufpunkt für ein geordnetes Aufwickeln des Seils konstant im Bereich der Führungsrollen verbleibt, ist der Schlitten entlang zweier Schienen über Rollen relativ zu einer ortsfesten Anordnung aus Führungsrollen verfahrbar. Das Verfahren des Schlittens wird ebenfalls durch die auftretenden Seilkräfte bewirkt.The European patent application EP 0 571 207 A1 relates to a cable guide device for multilayer winding and unwinding of a rope on a cable drum of a winch. The cable drum is mounted on a carriage. So that the rope outlet point for an orderly winding of the rope remains constant in the region of the guide rollers, the carriage is movable along two rails via rollers relative to a stationary arrangement of guide rollers. The method of carriage is also effected by the rope forces occurring.

Aus der britischen Patentanmeldung GB 714 071 A ist ein Hafenkran mit einem teleskopierbaren Ausleger und einem hieran aufgehängten teleskopierbaren Mast bekannt. Im Innern des Auslegers ist eine Seilwinde über eine Laufkatze horizontal verfahrbar, dessen Seil durch das Innere des Auslegers beziehungsweise des Masts geführt ist. Damit das von der Seiltrommel der Seilwinde vertikal nach unten ablaufende Seil beim Auf- und Abwickeln trotz des bezüglich der Seiltrommel wandernden Seilablaufpunktes die zentrale Position bezüglich des Masts beibehält, wird dem Wandern des Seilablaufpunktes beziehungsweise des Seils durch entsprechendes Verfahren der Laufkatze entlang des Auslegers entgegengewirkt. Der Erfindung liegt die Aufgabe zu Grunde, einen Laufkran mit einem an Schienen verfahrbaren Längsträger zu schaffen, der eine verbesserte Bauweise aufweist.From the British patent application GB 714 071 A is a port crane with a telescopic boom and a telescopic mast suspended thereon known. In the interior of the boom, a winch on a trolley is moved horizontally, the rope is guided through the interior of the boom or the mast. In order for the cable running downwards from the cable drum of the cable winch to maintain the central position with respect to the mast during winding and unwinding despite the cable drainage point moving with respect to the cable drum, the trolley is counteracted by appropriate movement of the trolley along the boom. The invention is based on the object to provide an overhead crane with a rail movable on the side rail, which has an improved design.

Diese Aufgabe wird durch einen Laufkran mit einem an Schienen verfahrbaren Längsträger mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by an overhead crane with a movable on rails side rail with the features of claim 1.

Erfindungsgemäß wird bei einem Laufkran mit einem an Schienen verfahrbaren Längsträger, an dem entlang eine Laufkatze in einer Querrichtung verfahrbar ist, die genau zwei jeweils eine Seiltrommel aufweisende Seilwinden umfasst, wobei die Seiltrommeln jeweils eine Drehachse aufweisen, die quer zur Querrichtung verlaufen, und wobei die Seiltrommeln parallel und mit Abstand nebeneinander angeordnet und in gegenläufiger Drehrichtung zum Heben und Senken einer Last betreibbar sind, eine verbesserte Bauweise dadurch erreicht, dass die beiden Seiltrommeln jeweils genau eine Seilrille aufweisen und die Seilrillen zueinander gegenläufig ausgebildet sind, von den beiden Seiltrommeln genau ein gemeinsames und über mindestens eine Unterflasche eingeschertes Seil auf- und abwickelbar ist, auf der Laufkatze eine Seilwindenkatze angeordnet ist, die zwei Seilwinden auf der Seilwindenkatze angeordnet sind und die Seilwindenkatze über Fahrwerke auf einem Querträger der Laufkatze in einer quer zu der Querrichtung verlaufenden Seilwindenfahrrichtung verfahrbar ist, wobei die Seilwinden mittels der Seilwindenkatze relativ zu der Laufkatze in der Art verfahrbar sind, dass jeweils ein entlang der entsprechenden Seiltrommel wandernder Seilablaufpunkt des Seils in Bezug auf die Längserstreckung der Seiltrommel an einer Stelle verbleibt, und dass ein Antrieb für die Fahrwerke der Seilwindenkatze über eine Steuerung mit einem Elektroantrieb der Seilwinde in der Art gekoppelt ist, dass der Seilablaufpunkt des Seils in Bezug auf die Längserstreckung der Seiltrommel an einer Stelle verbleibt. Die Lebensdauer des Seils und der Seiltrommel beziehungsweise der auf der Seiltrommel vorhandenen Seilrillen wird erhöht. Da ein maximaler erlaubter Seilablenkwinkel ein die Länge der Seiltrommel begrenzender Faktor ist, kann nun ohne erfindungsgemäße Seilablaufpunktwanderung die Länge der Seiltrommel erhöht werden und somit der Durchmesser der Seiltrommel verringert werden. Einher geht mit der Durchmesserverringerung eine Abnahme des maximalen Getriebeabtriebsmoments, so dass das Getriebe kleiner dimensioniert werden kann beziehungsweise ein Standardgetriebe für einen größeren Bereich von Traglasten innerhalb einer Seilzugbaureihe eingesetzt werden kann. Eine automatische Fixierung des Seilablaufpunkts durch die Ansteuerung der Fahrwerksantriebe ist hierbei besonders vorteilhaft.According to the invention, in a traveling crane with a longitudinal member movable on rails, along which a trolley can be moved in a transverse direction, comprising exactly two cable winches each having a cable drum, wherein the cable drums each have an axis of rotation transverse to the transverse direction, and wherein the Cable drums are arranged parallel and spaced next to each other and in opposite directions for lifting and lowering a load operable, an improved construction achieved by the fact that the two cable drums each have exactly one rope groove and the rope grooves are formed in opposite directions, of the two cable drums exactly one common and on at least one Unterflasche sheared rope up and is unwound, on the trolley a cable winch is arranged, the two winches are arranged on the cable winch and the winch cat about trolleys on a cross member of the trolley in a transverse z u the transverse direction running Seilwindenfahrrichtung is movable, the winches by means of the cable winch relative to the trolley are moved in such a way that in each case along the corresponding cable drum wandering cable drain point of the rope with respect to the longitudinal extent of the cable drum remains at one point, and that Drive for the trolleys of the cable winch is coupled via a controller with an electric drive of the winch in the way that the cable drain point of the rope remains in relation to the longitudinal extent of the cable drum at one point. The life of the rope and the cable drum or existing on the cable drum rope grooves is increased. Since a maximum permissible cable deflection angle is a factor limiting the length of the cable drum, the length of the cable drum can now be increased without the cable outlet point migration according to the invention and thus the diameter of the cable drum can be reduced. Along with the reduction in diameter is a decrease in the maximum transmission output torque, so that the transmission can be made smaller or a standard transmission can be used for a wider range of payloads within a cable train series. An automatic fixation of the Seilablaufpunkts by controlling the suspension drives is particularly advantageous.

Nachfolgend wird die Erfindung anhand eines in einer Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

  • Figur 1 eine Teilansicht eines Laufkrans,
  • Figur 2 eine perspektivische Ansicht von Figur 1 aus dem Bereich einer Laufkatze des Laufkrans,
  • Figur 3 eine Draufsicht auf den Laufkran gemäß Figur 2 und
  • Figur 4 eine Seitenansicht von Figur 3.
The invention will be explained in more detail with reference to an embodiment shown in a drawing. Show it:
  • FIG. 1 a partial view of a crane,
  • FIG. 2 a perspective view of FIG. 1 from the area of a trolley of the crane,
  • FIG. 3 a plan view of the overhead crane according to FIG. 2 and
  • FIG. 4 a side view of FIG. 3 ,

Die Figur 1 zeigt eine Ansicht eines Laufkrans 1, der in einer Halle oder im Freien betrieben werden kann. Der Laufkran 1 weist in üblicher Weise einen Längsträger 3 auf, der in Figur 1 nur abschnittsweise mit seinem rechten Endabschnitt dargestellt ist. Der Längsträger 3 ist an seinen beiden gegenüberliegenden Enden über Fahrwerke 4 auf Schienen 5 in deren Längsrichtung L verfahrbar. In Figur 1 ist nur eine der beiden Schienen 5 dargestellt. Die Schienen 5 sind über Konsolen 6 an einer Wand einer Halle, vorzugsweise im Bereich der Decke dieser Halle, befestigt oder über nicht dargestellte Stützen aufgeständert. Auf dem Längsträger 3 bzw. an dem Längsträger 3 ist eine Laufkatze 7 entlang des Längsträgers 3 in einer Querrichtung Q verfahrbar. Die Querrichtung Q verläuft rechtwinklig zur Längsrichtung L. Die Laufkatze 7 besteht im Wesentlichen aus einem Rahmen 8, der über Fahrwerke 9 an dem Längsträger 3 verfahrbar sind, und zwei Seilwinden 10. An einem von den beiden Seilwinden 10 ablaufenden Seil 11 ist eine Unterflasche 12 mit einem Lasthaken 13 aufgehängt. Das Seil 11 ist eingeschert, so dass im Bereich der Laufkatze 7 nicht dargestellte Oberflaschen angeordnet sind. Im vorliegenden Fall sind drei Oberflaschen vorhanden, da eine 8/1-Einscherung bei zwei Seilwinden 10 also eine 2x8/1-Einscherung vorgesehen ist.The FIG. 1 shows a view of a crane 1, which can be operated in a hall or outdoors. The overhead crane 1 has a longitudinal member 3 in the usual way, the in FIG. 1 only partially shown with its right end portion. The longitudinal member 3 is movable at its two opposite ends via trolleys 4 on rails 5 in the longitudinal direction L. In FIG. 1 only one of the two rails 5 is shown. The rails 5 are mounted on brackets 6 on a wall of a hall, preferably in the area of the ceiling of this hall, or raised by means not shown supports. On the longitudinal member 3 and on the longitudinal member 3 is a trolley 7 along the longitudinal member 3 in a transverse direction Q movable. The transverse direction Q is perpendicular to the longitudinal direction L. The trolley 7 consists essentially of a frame 8, which are movable on trolleys 9 on the longitudinal member 3, and two winches 10. On one of the two winches 10 running rope 11 is a lower block 12th suspended with a load hook 13. The rope 11 is reeved, so that in the region of the trolley 7, not shown, upper bottles are arranged. In the present case, three upper bottles are present, since an 8/1 reeving is provided for two winches 10, ie a 2x8 / 1 reeving.

Die Figur 2 zeigt eine perspektivische Detailansicht von Figur 1 aus dem Bereich der Laufkatze 7 und insbesondere deren Aufbau nach der vorliegenden Erfindung. Die Laufkatze 7 zeichnet sich gegenüber den aus dem Stand der Technik bekannten Laufkatzen dadurch aus, dass eine weitere Seilwindenkatze 15 vorgesehen ist, um die Seilwinden 10 nicht nur in Querrichtung Q entlang des Längsträgers 3 des Laufkrans 1 verfahren zu können sondern auch unabhängig von den Längsträgem 3 in einer Seilwindenfahrrichtung S, die sich rechtwinklig zur Querrichtung Q und im Wesentlichen parallel zur Längsrichtung L erstreckt.The FIG. 2 shows a perspective detail view of FIG. 1 from the area of the trolley 7 and in particular its structure according to the present invention. The Trolley 7 is distinguished from the trolleys known from the prior art by the fact that a further cable winch 15 is provided in order to move the winches 10 not only in the transverse direction Q along the longitudinal member 3 of the trolley 1 but also independently of the longitudinal members. 3 in a Seilwindenfahrrichtung S, which extends at right angles to the transverse direction Q and substantially parallel to the longitudinal direction L.

Die Figur 2 zeigt, dass der Laufkran 1 ein sogenannter Zweiträger-Laufkran mit zwei parallel und mit Abstand zueinander verlaufenden Längsträgem 3 ist. Diese Bauweise findet vorwiegend bei Laufkranen 1 für hohe Traglasten statt. Der hier gezeigte Laufkran 1 ist für Traglasten im Bereich 50 bis 200 t vorgesehen. An der Oberseite 3a der Längsträger 3 sind Schienen 16 befestigt, auf denen die Laufkatze 7 mit ihren Fahrwerken 9 abrollt. Aus Gründen der Übersichtlichkeit ist nur ein Fahrwerk 9 mit jeweils zwei Rädern 9a dargestellt Die Fahrwerke 9 sind an einem rechteckigen Rahmen 8 der Laufkatze 7 befestigt. Der Rahmen 8 weist zwei parallel und mit Abstand zueinander verlaufende Querträger 8a auf, auf denen wiederum Schienen 17 befestigt sind. Diese Schienen 17 verlaufen in Seilwindenfahrrichtung S und somit quer zur Querrichtung Q der Längsträger 3. Auf den Schienen 17 ist über weitere Fahrwerke 18 die Seilwindenkatze 15 in Seilwindenfahrrichtung S verfahrbar. Der Aufbau der Seilwindenkatze 15 ist durchaus vergleichbar mit dem von üblichen Kranlaufkatzen. An einem Katzrahmen 19 der Seilwindenkatze 15 sind die beiden Seilwinden 10 gelagert. Die Seilwinden 10 bestehen in üblicher Bauweise im Wesentlichen aus einer Seiltrommel 21, die um eine Drehachse D drehbar an dem Katzrahmen 19 gelagert ist. Die Drehachse D verläuft hierbei parallel zur Seilwindenfahrrichtung S und im wesentlichen horizontal. Auch sind die Drehachsen D der beiden Seiltrommeln 21 in einer gemeinsamen vertikalen Ebene angeordnet. Der Antrieb der Seiltrommeln 21 erfolgt über einen Elektromotor 22, der über ein sich an dem Katzrahmen 19 abstützendes Getriebe 23 mit der Seiltrommel 21 verbunden ist. Die Seiltrommeln 21 sind mit Seitrillen 24 versehen, von denen schematisch nur ein Abschnitt mit der Länge des Umfangs der Seitrommel 21 dargestellt ist. Die Seiltrommeln 21 sind als sogenannte einrillige Seiltrommeln 21 ausgeführt. Entsprechend der verwendeten 2 x 8/1-Einscherung wird von den beiden Seiltrommeln 21 nur ein gemeinsames Seil 11 auf- bzw. abgewickelt wird. Hierbei verlaufen die Seilrillen 24 gegenläufig. Da die beiden Seiltrommeln 21 jeweils für das Heben einer Last oder das Senken einer Last mit gegenläufiger Drehrichtung betrieben werden, wird das Seil 11, das zwischen den beiden Seiltrommeln 21 abläuft, in gewünschter Weise auf- oder abgewickelt.The FIG. 2 shows that the overhead crane 1 is a so-called double-girder overhead crane with two parallel and spaced-apart longitudinal members 3. This construction is mainly for overhead cranes 1 for high loads instead. The overhead crane 1 shown here is designed for loads in the range 50 to 200 t. On the upper side 3a of the longitudinal members 3 rails 16 are fixed, on which the trolley 7 rolls with their trolleys 9. For reasons of clarity, only one chassis 9 with two wheels 9a is shown. The running gears 9 are fastened to a rectangular frame 8 of the trolley 7. The frame 8 has two parallel and spaced-apart cross member 8a, on which in turn rails 17 are attached. These rails 17 extend in Seilwindenfahrrichtung S and thus transversely to the transverse direction Q of the side members 3. On the rails 17, the cable winch 15 is movable in Seilwindenfahrrichtung S on other trolleys 18. The structure of the cable winch 15 is quite comparable to that of conventional crane trolleys. On a cat frame 19 of the cable winch 15, the two winches 10 are mounted. The winches 10 are made in conventional construction essentially of a cable drum 21 which is rotatably mounted about a rotation axis D on the cat frame 19. The axis of rotation D in this case runs parallel to the cable winch driving direction S and substantially horizontally. Also, the axes of rotation D of the two cable drums 21 are arranged in a common vertical plane. The drive of the cable drums 21 takes place via an electric motor 22, which is connected to the cable drum 21 via a gear 23 supported on the cat frame 19. The cable drums 21 are provided with side grooves 24, of which only a portion with the length of the circumference of the side drum 21 is shown schematically. The cable drums 21 are designed as so-called monotone cable drums 21. According to the used 2 x 8/1-Einscherung 21 of the two cable drums only a common cable 11 is wound or unwound. In this case, the cable grooves 24 run in opposite directions. Since the two cable drums 21 each for lifting a load or lowering a load with opposite direction of rotation operated, the rope 11, which runs between the two cable drums 21, in the desired manner up or unwound.

In der Figur 3 ist eine Draufsicht auf den erfindungsgemäßen Laufkran 1 aus dem Bereich der Laufkatze 7 dargestellt. Die zueinander mit Abstand und parallel verlaufenden Längsträger 3 des Zweiträger-Laufkrans sind klar zu erkennen. Auch wird aus dieser Draufsicht deutlich, dass die untere Laufkatze 7 und die obere Katze 15 eine Art Kreuzkatze ausbilden, da die Seilwinden 10 mittels der Laufkatze 7 nicht nur in Querrichtung Q entlang der Längsträger 3 verfahrbar sind sondern mittels der Seilwindenkatze 15 auch in Seilwindenfahrrichtung S quer hierzu. Hierbei verlaufen die Seilwindenfahrrichtung S und die Querrichtung Q im Wesentlichen in den in Vertikalrichtung voneinander beabstandeten Ebenen horizontal.In the FIG. 3 is a plan view of the overhead crane 1 according to the invention from the area of the trolley 7 shown. The mutually spaced and parallel side members 3 of the double-girder overhead traveling crane are clearly visible. Also, it is clear from this plan view that the lower trolley 7 and the upper cat 15 form a kind of cross-cat, since the winches 10 by means of the trolley 7 not only in the transverse direction Q along the side members 3 are movable but by means of the cable winch 15 in Seilwindenfahrrichtung S. across this. Here, the Seilwindenfahrrichtung S and the transverse direction Q extend substantially horizontally in the vertically spaced-apart planes.

Des Weiteren ist der Figur 3 schematisch zu entnehmen, dass entlang der Seiltrommeln 21 Seilrillen 24 verlaufen, in denen das Seil 11 einlagig auf- und abwickelbar ist.Furthermore, the FIG. 3 can be seen schematically that along the cable drums 21 rope grooves 24 extend in which the rope 11 is single-layer up and unwound.

In der in der Figur 3 gezeigten Darstellung ist das Seil 11 von den Seiltrommeln 21 nahezu halb abgewickelt und die Unterflasche 12 mit dem Lasthaken 13 befindet sich in einer mittleren Stellung. Entsprechend befinden sich die Seilablaufpunkte 20 der Seile im Bereich der Mitte der Seiltrommeln 21. Entsprechend befindet sich die Seilwindenkatze 15 auf der Laufkatze 7 in Seilwindenfahrrichtung S gesehen in einer Mittelstellung. Sollte nun die Unterflasche 12 abgesenkt werden, wandem die Seilablaufpunkte 20 in Richtung der Seilwindenfahrrichtung S nach rechts. Da eine entsprechende Wanderung der Unterflasche 12 und somit eine seitliche Ablenkung der Seile 11 - in Richtung der Drehachsen D der Seiltrommeln 21 gesehen - beim Verlassen der Seilrillen 24 nicht gewünscht ist, wird die gesamte Seilwindenkatze 15 mit den Seilwinden 10 in der Figur 3 nach links entlang der Schienen 17 verfahren. Hierbei sind die Elektromotoren 22 für die Seiltrommeln 21 so mit einem nicht dargestellten Fahrantrieb für die Fahrwerke 18 über eine nicht dargestellte Steuerung verbunden, dass der Seilablaufpunkt 20 trotz Wanderns der Seilrillen 24 entlang der Seiltrommel 21 an einer Stelle in Bezug auf die Längsrichtung der Seiltrommeln 21 verbleibt.In the in the FIG. 3 As shown, the cable 11 is almost half unwound from the cable drums 21 and the bottom block 12 with the load hook 13 is in a middle position. Correspondingly, the cable outlet points 20 of the cables are in the region of the middle of the cable drums 21. Accordingly, the cable winch 15 is seen on the trolley 7 in Seilwindenfahrrichtung S in a central position. If now the bottom block 12 are lowered, the rope outlet points 20 in the direction of the cable winch travel direction S to the right. Since a corresponding migration of the lower block 12 and thus a lateral deflection of the ropes 11 - seen in the direction of the axes of rotation D of the cable drums 21 - when leaving the cable grooves 24 is not desired, the entire cable winch 15 with the winches 10 in the FIG. 3 move to the left along the rails 17. Here, the electric motors 22 for the cable drums 21 are so connected to a drive not shown for the chassis 18 via a controller, not shown, that the cable drain point 20 despite wandering the cable grooves 24 along the cable drum 21 at a position with respect to the longitudinal direction of the cable drums 21st remains.

Die Figur 4 zeigt eine Seitenansicht von Figur 3. Hier ist besonders gut zu erkennen, dass die Seilwindenkatze 15 sich über die Laufkatze 7 auf den Längsträgern 3 abstützt. Außerdem ist schematisch nur ein Seilstrang 11 dargestellt, obwohl entsprechend der gewählten Einscherung 2 x 8/1 insgesamt 8 Seilstränge 11 ablaufen. Somit gibt es insgesamt auch acht an den beiden Seiltrommeln 21. Zur Vereinfachung der Beschreibung der Erfindung wurden die vier Seilablaufpunkte 20 an einer Seiltrommel 21 in Bezug auf die Längserstreckung der Seiltrommel 21 zu einem Seilablaufpunkt 20 in der Mitte der vier Seilablaufpunkte zusammen gefasst.The FIG. 4 shows a side view of FIG. 3 , Here is particularly good to see that the cable winch 15 is supported on the longitudinal members 3 via the trolley 7. In addition, only one strand of rope 11 is shown schematically, although according to the selected reeving 2 x 8/1 a total of 8 rope strands 11 expire. Thus, there are a total of eight at the two cable drums 21. To simplify the description of the invention, the four cable discharge points 20 were taken together on a cable drum 21 with respect to the longitudinal extent of the cable drum 21 to a cable discharge point 20 in the middle of the four cable discharge points.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Laufkranoverhead crane
33
Längsträgerlongitudinal beams
3a3a
Oberseitetop
44
Fahrwerklanding gear
55
Schienerail
66
Konsoleconsole
77
Laufkatzetrolley
88th
Rahmenframe
8a8a
Querträgercrossbeam
99
Fahrwerklanding gear
9a9a
Radwheel
1010
Seilwindewinch
1111
Seileropes
1212
UnterflascheBottom block
1313
Lasthakenload hook
1515
SeilwindenkatzeWinch Cat
1616
Schienerail
1717
Schienerail
1818
Fahrwerklanding gear
18a18a
Radwheel
1919
Katzrahmencrab frame
2020
SeilablaufpunktCable departure point
2121
Seiltrommelcable drum
2222
Elektromotorelectric motor
2323
Getriebetransmission
2424
Seilrillecable groove
DD
Drehachseaxis of rotation
LL
Längsrichtunglongitudinal direction
QQ
Querrichtungtransversely
SS
SeilwindenfahrrichtungWinch travel direction

Claims (1)

  1. Overhead travelling crane (1) having a longitudinal beam (3) able to be displaced on rails (5), along which there can be displaced in a transverse direction (Q) a crane trolley (7) which comprises precisely two cable winches (10) each having a cable drum (21), the cable drums (21) each having an axis of rotation (D) which extends transversely to the transverse direction (Q), and the cable drums (21) being arranged next to one another at a distance and in parallel and being able to be operated in opposite directions of rotation to raise and lower a load, characterised in that the two cable drums (21) each have precisely one cable groove (24) and the cable grooves (24) are of an opposite-handed form to one another, precisely one common cable (11) which is reeved through at least one bottom block (12) can be wound up and unwound by the two cable drums (21), there is arranged on the crane trolley (7) a cable-winch trolley (15), the two cable winches (10) are arranged on the cable-winch trolley (15), and by means of running gear units (18) the cable-winch trolley (15) is displaceable on a transverse beam (8a) of the crane trolley (7) in a direction of travel (S) of the cable winches (10) which extends transversely to the transverse direction (Q), the cable winches (10) being displaceable relative to the crane trolley (7) by means of the cable-winch trolley (15) in such a way that respective wind-off points (20) of the cable (11) remain at one point relative to the longitudinal extent of the cable drums (21), and in that a drive for the running gear units (18) of the cable-winch trolley (15) is coupled via a control system to electric drives (22) of the cable winches (10) in such a way that the wind-off points (20) of the cable (11) remain at a single point relative to the longitudinal extent of the cable drums (21).
EP10742452A 2009-08-06 2010-07-27 Traveling crane having traveler and hoisting winch Active EP2435352B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009036356A DE102009036356A1 (en) 2009-08-06 2009-08-06 overhead crane
PCT/EP2010/060923 WO2011015496A1 (en) 2009-08-06 2010-07-27 Traveling crane having traveler and hoisting winch

Publications (2)

Publication Number Publication Date
EP2435352A1 EP2435352A1 (en) 2012-04-04
EP2435352B1 true EP2435352B1 (en) 2013-03-20

Family

ID=43064918

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Application Number Title Priority Date Filing Date
EP10742452A Active EP2435352B1 (en) 2009-08-06 2010-07-27 Traveling crane having traveler and hoisting winch

Country Status (12)

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US (1) US9016486B2 (en)
EP (1) EP2435352B1 (en)
JP (1) JP5864419B2 (en)
KR (1) KR101715423B1 (en)
CN (1) CN102471042B (en)
AU (1) AU2010280822B2 (en)
BR (1) BRPI1010134B1 (en)
CA (1) CA2769609C (en)
DE (1) DE102009036356A1 (en)
ES (1) ES2414646T3 (en)
RU (1) RU2492134C1 (en)
WO (1) WO2011015496A1 (en)

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CN106395640B (en) * 2016-11-17 2018-04-10 国家电网公司 Transformer loading and unloading bracket

Also Published As

Publication number Publication date
DE102009036356A1 (en) 2011-02-17
CN102471042B (en) 2014-08-27
AU2010280822A1 (en) 2012-02-02
RU2492134C1 (en) 2013-09-10
JP2013500917A (en) 2013-01-10
BRPI1010134A2 (en) 2016-03-15
ES2414646T3 (en) 2013-07-22
CA2769609A1 (en) 2011-02-10
CA2769609C (en) 2017-07-11
EP2435352A1 (en) 2012-04-04
WO2011015496A1 (en) 2011-02-10
CN102471042A (en) 2012-05-23
JP5864419B2 (en) 2016-02-17
US20120193315A1 (en) 2012-08-02
BRPI1010134B1 (en) 2020-09-08
KR20120055494A (en) 2012-05-31
AU2010280822B2 (en) 2014-06-26
US9016486B2 (en) 2015-04-28
KR101715423B1 (en) 2017-03-10

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