EP2524849A1 - Railway crane - Google Patents

Railway crane Download PDF

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Publication number
EP2524849A1
EP2524849A1 EP12167487A EP12167487A EP2524849A1 EP 2524849 A1 EP2524849 A1 EP 2524849A1 EP 12167487 A EP12167487 A EP 12167487A EP 12167487 A EP12167487 A EP 12167487A EP 2524849 A1 EP2524849 A1 EP 2524849A1
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EP
European Patent Office
Prior art keywords
drive
rail vehicle
undercarriage
vehicle according
cylinders
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
EP12167487A
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German (de)
French (fr)
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EP2524849B1 (en
EP2524849A8 (en
Inventor
Walter Köllner
Klaus Wintersig
Christian Fleck
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KIROW ARDELT GmbH
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KIROW ARDELT GmbH
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Publication of EP2524849A1 publication Critical patent/EP2524849A1/en
Publication of EP2524849A8 publication Critical patent/EP2524849A8/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
    • B61D15/02—Breakdown cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00—Types of bogies
    • B61F3/02—Types of bogies with more than one axle
    • B61F3/08—Types of bogies with more than one axle without driven axles or wheels
    • B61F3/10—Types of bogies with more than one axle without driven axles or wheels with three or more axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/36—Arrangements for equalising or adjusting the load on wheels or springs, e.g. yokes

Definitions

  • the present invention relates to a rail vehicle, in particular for receiving a crane, in particular a railway crane, with an undercarriage, which is supported at its two longitudinal ends by a respective drive with at least one axis.
  • the drives can be fixed or at least rotatable about an axis and / or slidably connected to the undercarriage.
  • railway vehicles of the aforesaid kind in particular rail vehicles for receiving a crane, which are also referred to as railway cranes, are well known. From the publication DE 42 37 948 C2 For example, such a railway crane is known. Also from the publication DE 10 2005 027 596 A1 is a railway crane known.
  • the basic structure of such a rail vehicle has a chassis which carries an undercarriage.
  • the chassis includes at least two drive units, each with at least one axis.
  • the drive units are positively connected mechanically to the undercarriage.
  • This linkage in certain cases, the compensation of a transverse inclination of the rail vehicle is possible. If several axes of a drive unit are mechanically combined in a frame (bogie), a rotational movement about the vertical axis (z) is possible at the point of articulation of this drive unit on the undercarriage.
  • the object of the present invention is, inter alia, to develop a rail vehicle of the aforementioned type so that cranes with high variability are possible, which in particular concerns compliance with the permissible axle loads (when traveling by train) and the permissible wheel riot forces (in crane operation).
  • the coupling of the center drive on the hydraulic cylinder unit allows different modes, since a change in the supporting forces on the control of the hydraulic cylinder unit is possible.
  • the hydraulic cylinder unit has at least one support cylinder and at least two roll cylinders.
  • support cylinders are provided, which run obliquely to each other.
  • the roll cylinders and the support cylinders are coupled to the center drive and the undercarriage such that relative movement between the center drive and the undercarriage across the longitudinal direction (i.e., direction of travel) of the rail vehicle is possible. More preferably, they are coupled so that the middle drive can rotate relative to the undercarriage about an axis extending in the longitudinal direction.
  • Such an arrangement of the individual cylinders allows a high degree of flexibility to be achieved.
  • the trackability of such a rail vehicle remains the same as in a rail vehicle that has no center drive. If the rail vehicle is equipped with a tilt compensation, so can with the help of this arrangement of support cylinder and roll cylinder the function of tilt compensation continue to be ensured, which is also advantageous.
  • each cylinder (roll cylinder, support cylinder) is associated with a pressure accumulator.
  • the spring action of the middle drive can be adapted to the spring behavior of the entire vehicle.
  • the entire support force is divided between the support and roll cylinder. Due to the special geometric arrangement of the cylinder in conjunction with the associated accumulators influence on the roll behavior of the entire vehicle is possible.
  • a central drive has a total of four axes, wherein a hydraulic cylinder unit with preferably two roll cylinders and two support cylinders is provided for every two axes. Each of these cylinders is assigned a pressure accumulator.
  • This embodiment has proven to be particularly advantageous and allows in particular cranes with very high possible payloads.
  • the weight of such a central drive can be partially used as a stable safety mass in supported crane operation.
  • the dead weight of the entire rail vehicle is distributed on train to many axes, with a compensation of the axle loads while maintaining the previous parameters of derailment safety and the curvature remains possible.
  • the middle drive is coupled to the undercarriage in the longitudinal direction (x) via a mechanical coupling rod.
  • the two roll cylinders are arranged in the two outer longitudinal regions and the at least one support cylinder in a central region.
  • the at least one support cylinder is arranged in the longitudinal direction between the two outer roll cylinders. If two support cylinders are provided, they lie with respect to a longitudinal center plane mirror-symmetrical to one another, wherein they preferably extend obliquely to this longitudinal center plane.
  • the hydraulic cylinder unit has at least one hydraulic pump.
  • the support cylinders and the roll cylinders of the hydraulic cylinder unit are each equipped with at least one pressure sensor, wherein the pressure sensors are connected to a control unit.
  • a rail vehicle is shown schematically and designated by the reference numeral 10.
  • the railway vehicle 10 is a railway crane 11 in the following embodiment. It should be noted, however, that the present invention could be applied not only to railway cranes but also to other railway vehicles.
  • the basic structure of such a railway crane 11 is known per se from the prior art, so that it should be discussed only briefly.
  • the railway crane 11 essentially consists of an undercarriage 12 and an uppercarriage 14.
  • the undercarriage 12 can be moved by means of chassis 16 on rails 18.
  • a boom 20 is articulated, which extends parallel to the longitudinal direction L of the upper carriage 14.
  • the boom 20 can be telescoped in its longitudinal direction be and is compared to the superstructure 14 about an axis y *, which is perpendicular to the longitudinal axis of the upper carriage, pivotally mounted.
  • a counterweight 22 is provided on an opposite end of the boom 20, wherein the counterweight 22 relative to the superstructure 14 about a vertical axis pivotally and / or about its longitudinal axis by means of a telescoping device 23 can be displaced.
  • support arms 24 may be attached, which should allow for crane operation support against the ground.
  • the rail vehicle 10 has, as already mentioned, landing gears 16 which are grouped into a plurality of drive units 30, 32 and 36.
  • the two drive units 30, 32 at the two longitudinal end regions of the undercarriage 12 each comprise two axles and are connected via a common bogie 33 (FIG. Fig. 2 ) connected to the undercarriage 12.
  • a common bogie 33 (FIG. Fig. 2 ) connected to the undercarriage 12.
  • connection between a bogie 33 carrying the two drive units 30, 32 and the undercarriage 12 permits rotational movement about a vertical axis z * and to a lesser extent about the crane longitudinal axis (x) and about an axis y transverse to the track , All three translatory degrees of freedom (displacements in the x, y and z directions) are mechanically determined with this connection.
  • Fig. 1 belongs to the chassis 16 and a so-called center drive 34, which here includes two drive units 36, each with two axes 37.
  • the middle drive 34 is arranged symmetrically to the vertical axis z, so that the distances to a center plane M, which extends through the vertical axis z and perpendicular to the longitudinal axis x, are the same.
  • the rail vehicle 10 thus has a total of six drive units 30, 32, 36, each with two axes, so that the rail vehicle 10 has a total of twelve axes.
  • Fig. 2 the undercarriage 12 is shown together with the chassis 16, wherein the superstructure 14 has been omitted for clarity.
  • an axis 37 of a drive unit 36 of the middle drive 34 can be seen.
  • the drive unit 36 is supported in the vertical direction via two support cylinders 40.
  • the two hydraulically operating support cylinders 40 are each mounted with their cylinder side on the upper carriage 14 and with its rod side on the drive 36.
  • the arrangement of the two support cylinders 40 is seen in the longitudinal direction V-shaped to the longitudinal center plane M.
  • roll cylinder 46 In addition to this support cylinder pair 40, as is apparent from Fig. 3 very good results, two more hydraulically operating cylinder 46 are provided, which are referred to as roll cylinder 46 below.
  • the two roll cylinders 46 are also arranged symmetrically with respect to the center plane M and also extend V-shaped, wherein the angle of inclination with respect to a vertical axis is less than in the support cylinders 40th
  • Fig. 3 shows further that the two roll cylinders 46 are also mounted with their cylinder part on the undercarriage 12 and with its rod part on the chassis 36.
  • the attachment of the support cylinder 40 and the Rolling cylinder 46 on the undercarriage 12 takes place approximately in the same plane, while the attachment of the support cylinder 40 on the chassis 36 is slightly deeper than the attachment of the roll cylinder 46 on the chassis 36.
  • the attachment of the support cylinder 40 and roll cylinder 46 on the undercarriage 12 and the chassis 36th is stored, so that in each case a rotational movement about an axis parallel to the longitudinal axis x is possible, at least to a small extent.
  • chassis 36 can move in the y-direction, which is especially important when cornering.
  • chassis 36 can be tilted relative to the undercarriage 12 about an axis (x) parallel to the longitudinal axis L, so that, for example, a roll compensation is possible.
  • the chassis 36 is connected to the undercarriage 12 via a mechanical coupling rod 42.
  • the support of a chassis 36 of the middle drive 34 thus takes place in the vertical direction (z) and in the transverse direction (y) alone on the support cylinder 40 and the roll cylinder 46, but not via other mechanical positive connections.
  • two support cylinders 40 and two roll cylinders 46 are provided per drive unit 36 of the middle drive 34, which are located between the two axles 37 of a drive unit 36.
  • the hydraulic system includes various pumps, with in Fig. 4 a pump is shown and designated by the reference numeral 101.
  • the oil supply of the hydraulic system of the center drive can also be taken over by other pumps of the entire hydraulic system alternatively or in summary.
  • the hydraulic pump shown here can be used in other operating situations for other functionalities.
  • Fig. 4 designated by the reference numeral 102. Furthermore, the hydraulic circuit is equipped with a pressure filter (reference numeral 103).
  • the support cylinders 40 and the roll cylinders 46 are acted upon according to the respective operating situation (eg crane travel, crane operation without support, crane operation with supports) with a predetermined pressure. This pressure is adjusted via the electrically controlled proportional pressure control valves associated with the respective cylinders.
  • the support cylinders are denoted by the reference numeral 105 and the associated proportional pressure control valves by the reference numeral 104, further the roll cylinders 46 are denoted by the reference numeral 110 and the proportional pressure control valves associated with these cylinders with the reference numeral 109.
  • the proportional pressure control valves 104 and 110 are driven with a certain electric current proportional to this current, the corresponding pressure is set in these valves.
  • the corresponding setpoints for these currents are stored in the electronic control or are generated in this.
  • the possibility of subjecting the support cylinders 105 and the roll cylinders 110 to different pressures may influence the roll behavior of the overall system in connection with their different force-action directions.
  • the caged pressure from the cylinders to the tank can be relieved with appropriate electrical control if necessary.
  • the associated proportional pressure control valves 104 and 109 must not be electrically driven, so they must be in the through state.
  • the support cylinders 40 and the rolling cylinders 46 must therefore apply tensile forces in order to at least partially raise the drive 36 located underneath.
  • the cylinders 105 and 110 are to be subjected to pressure on the rod side. This pressurization is carried out in the same manner as previously described for the piston side, but it is switched between the piston and rod side.
  • the support cylinders 105 associated changeover valves are designated by the reference numeral 108, the valves corresponding to the rolling cylinders with the reference numeral 113.
  • Rod side however, no accumulators are provided here, they are not required for the relevant operating conditions here.
  • any support force adjustment in the given work area is possible.
  • the applied support force - here at least on the piston side - be kept almost constant in the respective operating state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Jib Cranes (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The rail vehicle (10) has drive unit (30) provided at two longitudinal ends of undercarriage (12). A hydraulic cylinder unit (40) is connected with central drive and undercarriage, so that hydraulic cylinder units are supported by the central drive in vertical direction. A hydraulic pump is provided in hydraulic cylinder units.

Description

Die vorliegende Erfindung betrifft ein Schienenfahrzeug, insbesondere zur Aufnahme eines Krans, insbesondere eines Eisenbahnkrans, mit einem Unterwagen, der an seinen beiden Längsenden von jeweils einem Laufwerk mit zumindest einer Achse abgestützt ist. Die Laufwerke können dabei fest oder zumindest um eine Achse drehbar und/oder verschiebbar mit dem Unterwagen verbunden sein.The present invention relates to a rail vehicle, in particular for receiving a crane, in particular a railway crane, with an undercarriage, which is supported at its two longitudinal ends by a respective drive with at least one axis. The drives can be fixed or at least rotatable about an axis and / or slidably connected to the undercarriage.

Schienenfahrzeuge der vorgenannten Art, insbesondere Schienenfahrzeuge zur Aufnahme eines Krans, die auch als Eisenbahnkrane bezeichnet werden, sind allgemein bekannt. Aus der Druckschrift DE 42 37 948 C2 ist beispielsweise ein solcher Eisenbahnkran bekannt. Auch aus der Druckschrift DE 10 2005 027 596 A1 ist ein Eisenbahnkran bekannt.Railway vehicles of the aforesaid kind, in particular rail vehicles for receiving a crane, which are also referred to as railway cranes, are well known. From the publication DE 42 37 948 C2 For example, such a railway crane is known. Also from the publication DE 10 2005 027 596 A1 is a railway crane known.

Der Grundaufbau eines solchen Schienenfahrzeuges weist ein Fahrwerk auf, welches einen Unterwagen trägt. Das Fahrwerk umfasst mindestens zwei Laufwerkseinheiten mit jeweils mindestens einer Achse. Die Laufwerkseinheiten sind formschlüssig mechanisch mit dem Unterwagen verbunden. Über diese Anlenkung ist in bestimmten Fällen auch der Ausgleich einer Querneigung des Schienenfahrzeuges möglich. Sind mehrere Achsen einer Laufwerkseinheit in einem Rahmen mechanisch zusammengefasst (Drehgestell), so ist im Anlenkpunkt dieser Laufwerkseinheit am Unterwagen eine Drehbewegung um die vertikale Achse (z) möglich.The basic structure of such a rail vehicle has a chassis which carries an undercarriage. The chassis includes at least two drive units, each with at least one axis. The drive units are positively connected mechanically to the undercarriage. About this linkage in certain cases, the compensation of a transverse inclination of the rail vehicle is possible. If several axes of a drive unit are mechanically combined in a frame (bogie), a rotational movement about the vertical axis (z) is possible at the point of articulation of this drive unit on the undercarriage.

Probleme bei der Entwicklung solcher Eisenbahnkrane, die insbesondere für sehr große Lasten ausgelegt sind, stellen die Schienenbelastung einerseits und die Kurvengängigkeit andererseits dar.Problems in the development of such railway cranes, which are designed especially for very large loads, represent the rail load on the one hand and the turnability on the other hand.

Die Aufgabe der vorliegenden Erfindung besteht deshalb unter anderem darin, ein Schienenfahrzeug der vorgenannten Art so weiterzubilden, dass Krane mit hoher Variabilität möglich werden, was insbesondere die Einhaltung der zulässigen Achslasten (bei Zugfahrt) und der zulässigen Rad-Aufstandskräfte (im Kranbetrieb) betrifft.The object of the present invention is, inter alia, to develop a rail vehicle of the aforementioned type so that cranes with high variability are possible, which in particular concerns compliance with the permissible axle loads (when traveling by train) and the permissible wheel riot forces (in crane operation).

Diese Aufgabe wird von dem eingangs genannten Schienenfahrzeug dadurch gelöst, dass zumindest ein Mittellaufwerk und eine Hydraulikzylinder-Einheit vorgesehen werden, wobei die Hydraulikzylinder-Einheit einerseits mit dem Mittellaufwerk und andererseits mit dem Unterwagen verbunden ist, so dass das Mittellaufwerk den Unterwagen in vertikaler Richtung alleine über die Hydraulikzylinder-Einheit abstützt.This object is achieved by the rail vehicle mentioned above in that at least one central drive and a hydraulic cylinder unit are provided, wherein the hydraulic cylinder unit is connected on the one hand to the central drive and on the other hand to the undercarriage, so that the central drive the lower carriage in the vertical direction alone supported by the hydraulic cylinder unit.

Das Vorsehen zumindest eines weiteren Laufwerks in der Mitte (in Längsrichtung gesehen) des Unterwagens ermöglicht eine insgesamt größere Tragkraft, ohne die einzelne zulässige Radlast zu überschreiten. Durch die Kopplung über eine Hydraulikzylinder-Einheit lässt sich eine sehr geringe Bauhöhe gegenüber rein mechanischen Verbindungen erreichen, so dass das Schienenfahrzeug selbst auch bei vergrößertem Kranaufbau innerhalb der zulässigen Bauhöhen bleiben kann.The provision of at least one further drive in the center (seen in the longitudinal direction) of the undercarriage allows an overall greater load capacity, without exceeding the single permissible wheel load. By coupling via a hydraulic cylinder unit can be a very low height compared to purely mechanical connections achieve, so that the rail vehicle itself can remain within the allowable heights even with larger crane body.

Darüber hinaus ermöglicht die Kopplung des Mittellaufwerks über die Hydraulikzylinder-Einheit unterschiedliche Modi, da eine Veränderung der Stützkräfte über die Ansteuerung der Hydraulikzylinder-Einheit möglich wird.In addition, the coupling of the center drive on the hydraulic cylinder unit allows different modes, since a change in the supporting forces on the control of the hydraulic cylinder unit is possible.

Damit lassen sich beispielsweise aktiv die Rad-Aufstandskräfte des Mittellaufwerks anpassen.This can be used, for example, to actively adjust the wheel contact forces of the middle drive.

In einer bevorzugten Weiterbildung weist die Hydraulikzylinder-Einheit zumindest einen Abstützzylinder und zumindest zwei Wankzylinder auf. Vorzugsweise sind Abstützzylinder vorgesehen, die schräg zueinander verlaufen.In a preferred development, the hydraulic cylinder unit has at least one support cylinder and at least two roll cylinders. Preferably, support cylinders are provided, which run obliquely to each other.

Insbesondere sind Wankzylinder und Abstützzylinder so mit dem Mittellaufwerk und dem Unterwagen gekoppelt, dass eine Relativbewegung zwischen Mittellaufwerk und Unterwagen quer zur Längsrichtung (d.h. Fahrtrichtung) des Schienenfahrzeugs möglich ist. Weiter bevorzugt sind sie so gekoppelt, dass das Mittellaufwerk sich relativ zu dem Unterwagen um eine in Längsrichtung verlaufende Achse verdrehen kann.In particular, the roll cylinders and the support cylinders are coupled to the center drive and the undercarriage such that relative movement between the center drive and the undercarriage across the longitudinal direction (i.e., direction of travel) of the rail vehicle is possible. More preferably, they are coupled so that the middle drive can rotate relative to the undercarriage about an axis extending in the longitudinal direction.

Durch eine derartige Anordnung der einzelnen Zylinder lässt sich eine hohe Flexibilität erreichen. Insbesondere bleibt die Kurvengängigkeit eines solchen Schienenfahrzeugs genau so wie bei einem Schienenfahrzeug, das über kein Mittellaufwerk verfügt. Ist das Schienenfahrzeug mit einem Neigungsausgleich ausgerüstet, so kann mit Hilfe dieser Anordnung von Abstützzylinder und Wankzylinder die Funktion des Neigungsausgleichs weiterhin gewährleistet werden, was ebenfalls vorteilhaft ist.Such an arrangement of the individual cylinders allows a high degree of flexibility to be achieved. In particular, the trackability of such a rail vehicle remains the same as in a rail vehicle that has no center drive. If the rail vehicle is equipped with a tilt compensation, so can with the help of this arrangement of support cylinder and roll cylinder the function of tilt compensation continue to be ensured, which is also advantageous.

In der bevorzugten Weiterbildung ist jedem Zylinder (Wankzylinder, Abstützzylinder) ein Druckspeicher zugeordnet. Damit kann die Federwirkung des Mittellaufwerkes dem Federverhalten des Gesamtfahrzeuges angepasst werden.In the preferred embodiment, each cylinder (roll cylinder, support cylinder) is associated with a pressure accumulator. Thus, the spring action of the middle drive can be adapted to the spring behavior of the entire vehicle.

In der bevorzugten Weiterbildung wird die gesamte Stützkraft auf die Abstütz- und Wankzylinder aufgeteilt. Durch die spezielle geometrische Anordnung der Zylinder in Verbindung mit den zugeordneten Druckspeichern wird eine Einflussnahme auf das Wankverhalten des Gesamtfahrzeuges möglich.In the preferred embodiment, the entire support force is divided between the support and roll cylinder. Due to the special geometric arrangement of the cylinder in conjunction with the associated accumulators influence on the roll behavior of the entire vehicle is possible.

Das heißt mit anderen Worten, dass hier ein Mittellaufwerk über insgesamt vier Achsen verfügt, wobei für jeweils zwei Achsen eine Hydraulikzylinder-Einheit mit vorzugsweise zwei Wankzylindern und zwei Abstützzylindern vorgesehen ist. Diesen Zylindern ist jeweils ein Druckspeicher zugeordnet.In other words, this means that a central drive has a total of four axes, wherein a hydraulic cylinder unit with preferably two roll cylinders and two support cylinders is provided for every two axes. Each of these cylinders is assigned a pressure accumulator.

Diese Ausgestaltung hat sich als besonders vorteilhaft herausgestellt und ermöglicht insbesondere Krane mit sehr hohen möglichen Traglasten. Darüber hinaus lässt sich das Eigengewicht eines solchen Mittellaufwerks teilweise als standsicherheits-wirksame Masse bei abgestütztem Kranbetrieb nutzen. Zudem wird das Eigengewicht des gesamten Schienenfahrzeugs bei Zugfahrt auf sehr viele Achsen verteilt, wobei ein Ausgleich der Achslasten unter Einhaltung der bisherigen Parameter der Entgleisungssicherheit und der Kurvenläufigkeit möglich bleibt.This embodiment has proven to be particularly advantageous and allows in particular cranes with very high possible payloads. In addition, the weight of such a central drive can be partially used as a stable safety mass in supported crane operation. In addition, the dead weight of the entire rail vehicle is distributed on train to many axes, with a compensation of the axle loads while maintaining the previous parameters of derailment safety and the curvature remains possible.

Bei einer bevorzugten Weiterbildung ist das Mittellaufwerk mit dem Unterwagen in Längsrichtung (x) über eine mechanische Koppelstange gekoppelt.In a preferred embodiment, the middle drive is coupled to the undercarriage in the longitudinal direction (x) via a mechanical coupling rod.

Der Vorteil dieser Maßnahme ist darin zu sehen, dass die vertikale Abstützung des Unterwagens weiterhin alleine über die Hydraulikzylinder-Einheit erreicht wird, während eine Abstützung in Längsrichtung über die mechanische Koppelstange erfolgt. Die Hydraulikzylinder-Einheit muss folglich keine großen Kräfte in Längsrichtung aufnehmen.The advantage of this measure is the fact that the vertical support of the undercarriage is still achieved alone on the hydraulic cylinder unit, while a support in the longitudinal direction on the mechanical Coupling rod done. Consequently, the hydraulic cylinder unit does not have to absorb large forces in the longitudinal direction.

In einer bevorzugten Weiterbildung sind die beiden Wankzylinder in den beiden äußeren Längsbereichen und der zumindest eine Abstützzylinder in einem mittleren Bereich angeordnet.In a preferred development, the two roll cylinders are arranged in the two outer longitudinal regions and the at least one support cylinder in a central region.

Das bedeutet mit anderen Worten, dass der zumindest eine Abstützzylinder in Längsrichtung gesehen zwischen den beiden außen liegenden Wankzylindern angeordnet ist. Sind zwei Abstützzylinder vorgesehen, so liegen sie bezüglich einer Längsmittelebene spiegelsymmetrisch zueinander, wobei sie bevorzugt schräg zu dieser Längsmittelebene verlaufen.In other words, this means that the at least one support cylinder is arranged in the longitudinal direction between the two outer roll cylinders. If two support cylinders are provided, they lie with respect to a longitudinal center plane mirror-symmetrical to one another, wherein they preferably extend obliquely to this longitudinal center plane.

Diese spezielle Anordnung der Wank- und Stützzylinder ermöglicht eine ausreichende relative Beweglichkeit zwischen Mittellaufwerk und Unterwagen.This special arrangement of the roll and support cylinder allows sufficient relative mobility between the center drive and undercarriage.

In einer bevorzugten Weiterbildung weist die Hydraulikzylinder-Einheit zumindest eine Hydraulikpumpe auf.In a preferred development, the hydraulic cylinder unit has at least one hydraulic pump.

In einer bevorzugten Weiterbildung sind die Abstützzylinder und die Wankzylinder der Hydraulikzylinder-Einheit jeweils mit zumindest einem Drucksensor ausgestattet, wobei die Drucksensoren mit einer Steuerungseinheit verbunden sind.In a preferred development, the support cylinders and the roll cylinders of the hydraulic cylinder unit are each equipped with at least one pressure sensor, wherein the pressure sensors are connected to a control unit.

Weitere Vorteile und Ausgestaltungen der Erfindung ergeben sich aus der Beschreibung und der beiliegenden Zeichnung.Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained not only in the combination specified in each case, but also in other combinations or alone, without departing from the scope of the present invention.

Die Erfindung wird nun anhand eines Ausführungsbeispiels unter Bezugnahme auf die Figuren näher beschrieben. Dabei zeigen:

Fig. 1
verschiedene schematische Ansichten eines Schienenfahrzeugs mit Kranaufbau;
Fig. 2
mehrere schematische Ansichten eines erfindungsgemäßen Schienenfahrzeugs;
Fig. 3
eine schematische Querschnittsansicht eines Mittellaufwerks des in Fig. 2 gezeigten Schienenfahrzeugs; und
Fig. 4
eine schematische Darstellung des Hydraulikkreislaufs.
The invention will now be described with reference to an embodiment with reference to the figures. Showing:
Fig. 1
various schematic views of a rail vehicle with crane structure;
Fig. 2
several schematic views of a rail vehicle according to the invention;
Fig. 3
a schematic cross-sectional view of a central drive of the in Fig. 2 shown rail vehicle; and
Fig. 4
a schematic representation of the hydraulic circuit.

In Fig. 1 ist ein Schienenfahrzeug schematisch dargestellt und mit dem Bezugszeichen 10 gekennzeichnet. Bei dem Schienenfahrzeug 10 handelt es sich in dem nachfolgenden Ausführungsbeispiel um einen Eisenbahnkran 11. Es sei jedoch darauf hingewiesen, dass die vorliegende Erfindung nicht nur bei Eisenbahnkranen, sondern auch bei anderen Schienenfahrzeugen eingesetzt werden könnte.In Fig. 1 a rail vehicle is shown schematically and designated by the reference numeral 10. The railway vehicle 10 is a railway crane 11 in the following embodiment. It should be noted, however, that the present invention could be applied not only to railway cranes but also to other railway vehicles.

Der grundsätzliche Aufbau eines solchen Eisenbahnkrans 11 ist an sich aus dem Stand der Technik bekannt, so dass nur kurz darauf eingegangen werden soll. Der Eisenbahnkran 11 besteht im Wesentlichen aus einem Unterwagen 12 und einem Oberwagen 14. Der Unterwagen 12 ist über Fahrwerke 16 auf Schienen 18 verfahrbar. Auf dem Unterwagen 12 ist über eine vertikale und senkrecht zum Unterwagen 12 ausgerichtete Achse H der Oberwagen 14 schwenkbar gelagert. Auf dem Oberwagen 14 ist ein Ausleger 20 angelenkt, der sich parallel zur Längsrichtung L des Oberwagens 14 erstreckt. Der Ausleger 20 kann in seiner Längsrichtung teleskopierbar sein und ist gegenüber dem Oberwagen 14 um eine Achse y*, die senkrecht zur Längsachse des Oberwagens verläuft, schwenkbar angeordnet. Ferner ist an einem dem Ausleger 20 gegenüberliegenden Ende des Oberwagens ein Gegengewicht 22 vorgesehen, wobei das Gegengewicht 22 gegenüber dem Oberwagen 14 um eine vertikale Achse schwenkbar und/oder um dessen Längsachse mittels einer Teleskopiereinrichtung 23 verschiebbar sein kann. An den Längsseiten des Unterwagens 12 können Abstützarme 24 angebracht sein, die bei Kranbetrieb eine Abstützung gegenüber dem Boden ermöglichen sollen.The basic structure of such a railway crane 11 is known per se from the prior art, so that it should be discussed only briefly. The railway crane 11 essentially consists of an undercarriage 12 and an uppercarriage 14. The undercarriage 12 can be moved by means of chassis 16 on rails 18. On the undercarriage 12 of a vertical and perpendicular to the undercarriage 12 aligned axis H of the upper carriage 14 is pivotally mounted. On the upper carriage 14, a boom 20 is articulated, which extends parallel to the longitudinal direction L of the upper carriage 14. The boom 20 can be telescoped in its longitudinal direction be and is compared to the superstructure 14 about an axis y *, which is perpendicular to the longitudinal axis of the upper carriage, pivotally mounted. Further, a counterweight 22 is provided on an opposite end of the boom 20, wherein the counterweight 22 relative to the superstructure 14 about a vertical axis pivotally and / or about its longitudinal axis by means of a telescoping device 23 can be displaced. On the longitudinal sides of the undercarriage 12 support arms 24 may be attached, which should allow for crane operation support against the ground.

Das Schienenfahrzeug 10 weist, wie bereits erwähnt, Fahrwerke 16 auf, die sich in mehrere Laufwerkseinheiten 30, 32 und 36 gruppieren. Die beiden Laufwerkseinheiten 30, 32 an den beiden Längsendbereichen des Unterwagens 12 umfassen jeweils zwei Achsen und sind über ein gemeinsames Drehgestell 33 (Fig. 2) mit dem Unterwagen 12 verbunden. Das heißt mit anderen Worten, dass die beiden Laufwerkseinheiten 30, 32 im vorderen Längsbereich des Unterwagens 12 über ein Drehgestell 33 mit diesem verbunden sind, und dass auch die im hinteren Längsabschnitt des Unterwagens 12 vorgesehenen beiden Laufwerkseinheiten 30, 32 über ein Drehgestell 33 mit dem Unterwagen 12 verbunden sind. Die Abstützung des Unterwagens 12 an diesen Laufwerkseinheiten 30, 32 erfolgt in vertikaler Richtung formschlüssig, stabil und mechanisch. Auch in horizontaler Richtung ist eine formschlüssige mechanische Verbindung vorgesehen. Die Verbindung zwischen einem die beiden Laufwerkseinheiten 30, 32 tragenden Drehgestell 33 und dem Unterwagen 12 erlaubt eine Drehbewegung um eine vertikale Achse z* und in geringem Maße um die Kran-Längsachse (x) und um eine Achse y, die in Querrichtung zum Gleis verläuft. Alle drei translatorischen Freiheitsgrade (Verschiebungen in x-, y- und z-Richtung) sind mit dieser Verbindung mechanisch festgelegt.The rail vehicle 10 has, as already mentioned, landing gears 16 which are grouped into a plurality of drive units 30, 32 and 36. The two drive units 30, 32 at the two longitudinal end regions of the undercarriage 12 each comprise two axles and are connected via a common bogie 33 (FIG. Fig. 2 ) connected to the undercarriage 12. In other words, that the two drive units 30, 32 in the front longitudinal region of the undercarriage 12 via a bogie 33 are connected thereto, and that also provided in the rear longitudinal portion of the undercarriage 12 two drive units 30, 32 via a bogie 33 with the Undercarriage 12 are connected. The support of the undercarriage 12 to these drive units 30, 32 takes place in the vertical direction positively, stably and mechanically. Also in the horizontal direction a positive mechanical connection is provided. The connection between a bogie 33 carrying the two drive units 30, 32 and the undercarriage 12 permits rotational movement about a vertical axis z * and to a lesser extent about the crane longitudinal axis (x) and about an axis y transverse to the track , All three translatory degrees of freedom (displacements in the x, y and z directions) are mechanically determined with this connection.

Wie sich aus Fig. 1 deutlich ergibt, gehört zu dem Fahrwerk 16 auch ein so genanntes Mittellaufwerk 34, das hier zwei Laufwerkseinheiten 36 mit jeweils zwei Achsen 37 umfasst. Das Mittellaufwerk 34 ist symmetrisch zur Hochachse z angeordnet, so dass die Abstände zu einer Mittelebene M, die durch die Hochachse z und senkrecht zu der Längsachse x verläuft, gleich sind.As it turned out Fig. 1 clearly results, belongs to the chassis 16 and a so-called center drive 34, which here includes two drive units 36, each with two axes 37. The middle drive 34 is arranged symmetrically to the vertical axis z, so that the distances to a center plane M, which extends through the vertical axis z and perpendicular to the longitudinal axis x, are the same.

Insgesamt verfügt das Schienenfahrzeug 10 hier somit über insgesamt sechs Laufwerkseinheiten 30, 32, 36 mit jeweils zwei Achsen, so dass das Schienenfahrzeug 10 insgesamt zwölf Achsen besitzt. Im Vergleich zu den bisher bekannten Schienenfahrzeugen, insbesondere Eisenbahnkranen, sind das vier zusätzliche Achsen, die in einem mittleren Bereich des Unterwagens 12 vorgesehen sind.Overall, the rail vehicle 10 thus has a total of six drive units 30, 32, 36, each with two axes, so that the rail vehicle 10 has a total of twelve axes. In comparison to the previously known rail vehicles, in particular railway cranes, these are four additional axles which are provided in a middle region of the undercarriage 12.

Mit Bezug auf die Fig. 2 und 3 soll nun nachfolgend auf den besonderen Aufbau des Mittellaufwerks 34, und dort insbesondere auf die Lagerung einer Laufwerkseinheit 36, eingegangen werden.With reference to the Fig. 2 and 3 will now be discussed below on the particular structure of the center drive 34, and there in particular the storage of a drive unit 36.

In Fig. 2 ist der Unterwagen 12 zusammen mit den Fahrwerken 16 dargestellt, wobei der Oberwagen 14 aus Übersichtlichkeitsgründen weggelassen wurde. In der in Fig. 2 oben dargestellten Schnittansicht ist eine Achse 37 einer Laufwerkseinheit 36 des Mittellaufwerks 34 zu erkennen. Die Laufwerkseinheit 36 ist dabei in vertikaler Richtung über zwei Abstützzylinder 40 abgestützt. Die beiden hydraulisch arbeitenden Abstützzylinder 40 sind jeweils mit ihrer Zylinderseite am Oberwagen 14 und mit ihrer Stangenseite am Laufwerk 36 angebracht. Die Anordnung der beiden Abstützzylinder 40 ist in Längsrichtung gesehen V-förmig zu der in Längsrichtung verlaufenden Mittelebene M. Die vertikale Abstützung des Unterwagens 12 an diesem Laufwerk 36 erfolgt über diese Abstützzylinder 40.In Fig. 2 the undercarriage 12 is shown together with the chassis 16, wherein the superstructure 14 has been omitted for clarity. In the in Fig. 2 As shown in the sectional view above, an axis 37 of a drive unit 36 of the middle drive 34 can be seen. The drive unit 36 is supported in the vertical direction via two support cylinders 40. The two hydraulically operating support cylinders 40 are each mounted with their cylinder side on the upper carriage 14 and with its rod side on the drive 36. The arrangement of the two support cylinders 40 is seen in the longitudinal direction V-shaped to the longitudinal center plane M. The vertical support of the undercarriage 12 on this drive 36 via this support cylinder 40th

Zusätzlich zu diesem Abstützzylinder-Paar 40 sind, wie sich aus Fig. 3 sehr gut ergibt, zwei weitere hydraulisch arbeitende Zylinder 46 vorgesehen, die nachfolgend als Wankzylinder 46 bezeichnet werden. Die beiden Wankzylinder 46 sind bezüglich der Mittelebene M ebenfalls symmetrisch angeordnet und verlaufen ebenfalls V-förmig, wobei der Neigungswinkel gegenüber einer senkrechten Achse geringer ist als bei den Abstützzylindern 40.In addition to this support cylinder pair 40, as is apparent from Fig. 3 very good results, two more hydraulically operating cylinder 46 are provided, which are referred to as roll cylinder 46 below. The two roll cylinders 46 are also arranged symmetrically with respect to the center plane M and also extend V-shaped, wherein the angle of inclination with respect to a vertical axis is less than in the support cylinders 40th

Fig. 3 lässt ferner erkennen, dass die beiden Wankzylinder 46 ebenfalls mit ihrem Zylinderteil an dem Unterwagen 12 und mit ihrem Stangenteil an dem Fahrwerk 36 angebracht sind. Die Anbringung der Abstützzylinder 40 und der Wankzylinder 46 am Unterwagen 12 erfolgt in etwa in der gleichen Ebene, während die Anbringung der Abstützzylinder 40 am Fahrwerk 36 etwas tiefer erfolgt als die Anbringung der Wankzylinder 46 am Fahrwerk 36. Die Anbringung der Abstützzylinder 40 und Wankzylinder 46 am Unterwagen 12 und am Fahrwerk 36 erfolgt gelagert, so dass jeweils eine Drehbewegung um eine Achse parallel zur Längsachse x möglich ist, zumindest in geringem Umfang. Fig. 3 shows further that the two roll cylinders 46 are also mounted with their cylinder part on the undercarriage 12 and with its rod part on the chassis 36. The attachment of the support cylinder 40 and the Rolling cylinder 46 on the undercarriage 12 takes place approximately in the same plane, while the attachment of the support cylinder 40 on the chassis 36 is slightly deeper than the attachment of the roll cylinder 46 on the chassis 36. The attachment of the support cylinder 40 and roll cylinder 46 on the undercarriage 12 and the chassis 36th is stored, so that in each case a rotational movement about an axis parallel to the longitudinal axis x is possible, at least to a small extent.

Die gewählte Anordnungsgeometrie der beiden Abstützzylinder 40 und der beiden Wankzylinder 46 sowie die gelagerte Anbringung an Unterwagen 12 bzw. Fahrwerk 36 ermöglicht, dass sich das Fahrwerk 36 in y-Richtung verlagern kann, was gerade bei Kurvenfahrten von großer Bedeutung ist. Darüber hinaus kann das Fahrwerk 36 gegenüber dem Unterwagen 12 um eine Achse (x) parallel zur Längsachse L gekippt werden, so dass beispielsweise ein Wankausgleich möglich ist. In Längsrichtung ist das Fahrwerk 36 mit dem Unterwagen 12 über eine mechanische Koppelstange 42 verbunden.The selected arrangement geometry of the two support cylinders 40 and the two rolling cylinders 46 and the mounted mounting on undercarriage 12 or chassis 36 allows that the chassis 36 can move in the y-direction, which is especially important when cornering. In addition, the chassis 36 can be tilted relative to the undercarriage 12 about an axis (x) parallel to the longitudinal axis L, so that, for example, a roll compensation is possible. In the longitudinal direction, the chassis 36 is connected to the undercarriage 12 via a mechanical coupling rod 42.

Die Abstützung eines Fahrwerks 36 des Mittellaufwerks 34 erfolgt somit in vertikaler Richtung (z) und in Querrichtung (y) alleine über die Abstützzylinder 40 und die Wankzylinder 46, nicht aber über andere mechanische formschlüssige Verbindungen. Die Abstützung des Fahrwerks 36 in Längsrichtung erfolgt über die mechanische Koppelstange 42.The support of a chassis 36 of the middle drive 34 thus takes place in the vertical direction (z) and in the transverse direction (y) alone on the support cylinder 40 and the roll cylinder 46, but not via other mechanical positive connections. The support of the chassis 36 in the longitudinal direction via the mechanical coupling rod 42nd

Wie sich aus Fig. 2 und 3 weiter ergibt, sind hier zwei Abstützzylinder 40 und zwei Wankzylinder 46 pro Laufwerkseinheit 36 des Mittellaufwerks 34 vorgesehen, die sich zwischen den zwei Achsen 37 einer Laufwerkseinheit 36 befinden.As it turned out Fig. 2 and 3 further, two support cylinders 40 and two roll cylinders 46 are provided per drive unit 36 of the middle drive 34, which are located between the two axles 37 of a drive unit 36.

Der zur Steuerung der Abstütz- und Wankzylinder erforderliche Hydraulikkreislauf soll nun anhand der in Fig. 4 gezeigten Abbildung näher erläutert werden, wobei aus Übersichtlichkeitsgründen in Fig. 4 lediglich ein Fahrwerk 36 gezeigt sind. Es versteht sich, dass das andere Fahrwerk in gleicher Weise angesteuert bzw. betrieben wird.The required for controlling the jacking and rolling cylinder hydraulic circuit is now based on the in Fig. 4 are shown in more detail, for clarity in Fig. 4 only one chassis 36 are shown. It is understood that the other suspension is driven or operated in the same way.

Das hydraulische System umfasst verschiedene Pumpen, wobei in Fig. 4 eine Pumpe dargestellt und mit dem Bezugszeichen 101 gekennzeichnet ist. Die Ölversorgung des hydraulischen Systems des Mittenlaufwerkes kann auch von anderen Pumpen des gesamten Hydrauliksystems alternativ oder summarisch übernommen werden. Ebenfalls kann die hier aufgezeigte Hydraulikpumpe in anderen Betriebssituationen für andere Funktionalitäten mit benutzt werden.The hydraulic system includes various pumps, with in Fig. 4 a pump is shown and designated by the reference numeral 101. The oil supply of the hydraulic system of the center drive can also be taken over by other pumps of the entire hydraulic system alternatively or in summary. Likewise, the hydraulic pump shown here can be used in other operating situations for other functionalities.

Zur Absicherung des maximalen Druckes sind Druckbegrenzungsventile vorgesehen, in Fig. 4 mit dem Bezugszeichen 102 gekennzeichnet. Weiterhin ist der Hydraulikkreis mit einem Druckfilter (Bezugszeichen 103) ausgestattet.To secure the maximum pressure pressure relief valves are provided in Fig. 4 designated by the reference numeral 102. Furthermore, the hydraulic circuit is equipped with a pressure filter (reference numeral 103).

Die Abstützzylinder 40 und die Wankzylinder 46 werden entsprechend der jeweiligen Betriebssituation (z.B. Kranfahrt, Kranbetrieb ohne Abstützung, Kranbetrieb mit Abstützungen) mit einem vorgegebenen Druck beaufschlagt. Dieser Druck wird über die elektrisch angesteuerten Proportional-Druck-Regelventile eingestellt, die den jeweiligen Zylindern zugeordnet sind. In Fig. 4 sind die Abstützzylinder mit dem Bezugszeichen 105 und die dazugehörigen Proportional-Druck-Regelventile mit dem Bezugszeichen 104 gekennzeichnet, des weiteren sind die Wankzylinder 46 mit dem Bezugszeichen 110 und die diesen Zylindern zugeordneten Proportional-Druck-Regelventile mit dem Bezugszeichen109 gekennzeichnet.The support cylinders 40 and the roll cylinders 46 are acted upon according to the respective operating situation (eg crane travel, crane operation without support, crane operation with supports) with a predetermined pressure. This pressure is adjusted via the electrically controlled proportional pressure control valves associated with the respective cylinders. In Fig. 4 the support cylinders are denoted by the reference numeral 105 and the associated proportional pressure control valves by the reference numeral 104, further the roll cylinders 46 are denoted by the reference numeral 110 and the proportional pressure control valves associated with these cylinders with the reference numeral 109.

Die Proportional-Druck-Regelventile 104 bzw. 110 werden mit einem bestimmten elektrischen Strom angesteuert, proportional zu diesem Strom wird der entsprechende Druck in diesen Ventilen eingestellt. Die entsprechenden Sollwerte für diese Ströme sind in der elektronischen Steuerung hinterlegt bzw. werden in dieser generiert.The proportional pressure control valves 104 and 110 are driven with a certain electric current proportional to this current, the corresponding pressure is set in these valves. The corresponding setpoints for these currents are stored in the electronic control or are generated in this.

Wenn der vorgegebene Druck in den Zylindern erreicht ist, wird dieser über die elektrisch angesteuerten Wege-Sitz-Ventile in den Zylindern und den daran angeschlossenen Druckspeichern eingeschlossen. Der jeweilige Zylinder-Kreislauf wird quasi von der Kranhydraulik abgesperrt. Die zu den Stützzylindern 105 zugehörigen Wege-Sitz-Ventile sind mit dem Bezugszeichen 106 gekennzeichnet, die Druckspeicher für die Stützzylinder mit dem Bezugszeichen 107. Entsprechend sind die zu den Wankzylindern 110 gehörenden Wege-Sitz-Ventile mit dem Bezugszeichen 111 und die Druckspeicher mit dem Bezugszeichen 112 gekennzeichnet.When the predetermined pressure in the cylinders is reached, it is trapped via the electrically controlled directional control valves in the cylinders and the pressure accumulators connected thereto. The respective cylinder cycle is virtually blocked off by the crane hydraulics. The associated with the support cylinders 105 way-seat valves are designated by the reference numeral 106, the pressure accumulator for the support cylinder with the reference numeral 107. Accordingly, belonging to the rolling cylinders 110 way-seat valves with the reference numeral 111 and the pressure accumulator with the Reference numeral 112 marked.

Über die Druckspeicher 107 bzw. 112 wird erreicht, dass auch bei auftretenden Zylinderhüben (z.B. aus Fahrschwingungen) der eingestellte Druck nahezu konstant gehalten werden kann.It is achieved via the pressure accumulators 107 and 112 that even when cylinder strokes occur (for example due to driving vibrations), the set pressure can be kept almost constant.

Über die Möglichkeit, die Stützzylinder 105 und die Wankzylinder 110 mit unterschiedlichen Drücken zu beaufschlagen, kann im Zusammenhang mit ihren unterschiedlichen Kraft-Wirkungsrichtungen das Wankverhalten des Gesamtsystems beeinflusst werden.The possibility of subjecting the support cylinders 105 and the roll cylinders 110 to different pressures may influence the roll behavior of the overall system in connection with their different force-action directions.

Über die Wege-Sitz-Ventile 106 bzw. 111 an den Zylindern kann bei entsprechender elektrischer Ansteuerung gegebenenfalls der eingesperrte Druck aus den Zylindern zum Tank hin entlastet werden. Dazu müssen die zugehörigen Proportional-Druck-Regelventile 104 bzw. 109 elektrisch nicht angesteuert sein, sie müssen sich also im Durchgangszustand befinden.About the way-seat valves 106 and 111 to the cylinders, the caged pressure from the cylinders to the tank can be relieved with appropriate electrical control if necessary. For this purpose, the associated proportional pressure control valves 104 and 109 must not be electrically driven, so they must be in the through state.

Für bestimmte Betriebszustände kann es erforderlich sein, eine Stützkraft einzustellen, die kleiner als das Eigengewicht des jeweiligen Laufwerkes ist. Die Abstützzylinder 40 bzw. die Wankzylinder 46 müssen also Zugkräfte aufbringen, um das darunter befindliche Laufwerk 36 zumindest teilweise anzuheben. Dazu sind die Zylinder 105 bzw. 110 stangenseitig mit Druck zu beaufschlagen. Diese Druckbeaufschlagung erfolgt in gleicher Weise wie zuvor für die Kolbenseite beschrieben, es wird jedoch zwischen Kolben- und Stangenseite umgeschaltet. Die den Abstützzylindern 105 zugeordneten Umschaltventile sind mit dem Bezugszeichen 108 gekennzeichnet, die den Wankzylindern zugehörigen Ventile mit dem Bezugszeichen 113. Stangenseitig sind hier jedoch keine Druckspeicher vorgesehen, sie sind für die relevanten Betriebszustände hier auch nicht erforderlich.For certain operating conditions, it may be necessary to set a support force that is smaller than the weight of the respective drive. The support cylinders 40 and the rolling cylinders 46 must therefore apply tensile forces in order to at least partially raise the drive 36 located underneath. For this purpose, the cylinders 105 and 110 are to be subjected to pressure on the rod side. This pressurization is carried out in the same manner as previously described for the piston side, but it is switched between the piston and rod side. The support cylinders 105 associated changeover valves are designated by the reference numeral 108, the valves corresponding to the rolling cylinders with the reference numeral 113. Rod side, however, no accumulators are provided here, they are not required for the relevant operating conditions here.

Mit dem aufgezeigten System ist jede Stützkrafteinstellung im vorgegebenen Arbeitsbereich möglich. Über die Druckspeicher kann die aufgebrachte Stützkraft - hier zumindest auf der Kolbenseite - im jeweiligen Betriebszustand nahezu konstant gehalten werden.With the system shown, any support force adjustment in the given work area is possible. About the accumulator, the applied support force - here at least on the piston side - be kept almost constant in the respective operating state.

Claims (12)

Schienenfahrzeug, insbesondere zur Aufnahme eines Krans, mit einem Unterwagen (12), der an seinen beiden Längsenden von jeweils einer Laufwerkseinheit (30) mit zumindest einer Achse abgestützt ist, gekennzeichnet durch zumindest ein Mittellaufwerk (34), und
eine Hydraulikzylinder-Einheit (40, 46), die einerseits mit dem Mittellaufwerk (34) und andererseits mit dem Unterwagen (12) verbunden ist, so dass das Mittellaufwerk (34) den Unterwagen (12) in vertikaler Richtung allein über die Hydraulikzylinder-Einheit (40, 46) abstützt.Rail vehicle, in particular for receiving a crane, with an undercarriage (12) which is supported at its two longitudinal ends by a respective drive unit (30) with at least one axle, characterized by at least one middle drive (34), and
a hydraulic cylinder unit (40, 46) which is connected on the one hand to the central drive (34) and on the other hand to the undercarriage (12), so that the middle drive (34) the lower carriage (12) in the vertical direction alone via the hydraulic cylinder unit (40, 46) is supported. Schienenfahrzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Hydraulikzylinder-Einheit (40, 46) zumindest einen Abstützzylinder (40) und zumindest zwei Wankzylinder (46) aufweist.Rail vehicle according to claim 1, characterized in that the hydraulic cylinder unit (40, 46) has at least one support cylinder (40) and at least two roll cylinders (46). Schienenfahrzeug nach Anspruch 2, dadurch gekennzeichnet, dass zwei Abstützzylinder (40) vorgesehen sind, die schräg zueinander angeordnet sind.Rail vehicle according to claim 2, characterized in that two support cylinders (40) are provided, which are arranged obliquely to each other. Schienenfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Mittellaufwerk (34) zwei Laufwerke (36) aufweist.Rail vehicle according to one of the preceding claims, characterized in that the middle drive (34) has two drives (36). Schienenfahrzeug nach Anspruch 4, dadurch gekennzeichnet, dass jedes Laufwerk zwei Achsen aufweist.Rail vehicle according to claim 4, characterized in that each drive has two axes. Schienenfahrzeug nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass jedem Laufwerk (36) des Mittellaufwerkes (34) eine Hydraulikzylinder-Einheit (40, 46) zugeordnet ist.Rail vehicle according to claim 4 or 5, characterized in that each drive (36) of the central drive (34) is associated with a hydraulic cylinder unit (40, 46). Schienenfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Mittellaufwerk (34) mit dem Unterwagen (12) in Längsrichtung über eine mechanische Koppelstange (42) und vertikal und in Querrichtung über eine hydraulische Schwinge gekoppelt ist, die durch die Hydraulikzylinder-Einheit (40, 46) bereitgestellt ist.Rail vehicle according to one of the preceding claims, characterized in that the middle drive (34) is coupled to the undercarriage (12) in the longitudinal direction via a mechanical coupling rod (42) and vertically and in the transverse direction via a hydraulic rocker, which by the hydraulic cylinder unit ( 40, 46). Schienenfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die beiden Wankzylinder (46) in den beiden äußeren Längsbereichen angeordnet sind, und dass der zumindest eine Abstützzylinder (40) in einem mittleren Bereich angeordnet ist.Rail vehicle according to one of the preceding claims, characterized in that the two roll cylinders (46) are arranged in the two outer longitudinal regions, and that the at least one support cylinder (40) is arranged in a central region. Schienenfahrzeug nach Anspruch 8, dadurch gekennzeichnet, dass die Wankzylinder und der zumindest eine Abstützzylinder (40) so mit dem Mittellaufwerk und dem Unterwagen gekoppelt sind, dass eine Relativbewegung zwischen Mittellaufwerk und Unterwagen quer zur Längsrichtung, Fahrtrichtung, des Schienenfahrzeugs möglich ist.Rail vehicle according to claim 8, characterized in that the roll cylinders and the at least one support cylinder (40) are coupled to the center drive and the undercarriage that a relative movement between the center drive and undercarriage transverse to the longitudinal direction, direction of travel of the rail vehicle is possible. Schienenfahrzeug nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Wankzylinder (46) und der zumindest eine Abstützzylinder (40) so mit dem Mittellaufwerk und dem Unterwagen gekoppelt sind, dass das Mittellaufwerk sich relativ zu dem Unterwagen um eine in Längsrichtung verlaufende Achse verdrehen kann.Rail vehicle according to claim 8 or 9, characterized in that the roll cylinder (46) and the at least one support cylinder (40) are coupled to the central drive and the undercarriage that the center drive can rotate relative to the undercarriage about a longitudinal axis , Schienenfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Hydraulikzylinder-Einheit zumindest eine Hydraulikpumpe (101) aufweist.Rail vehicle according to one of the preceding claims, characterized in that the hydraulic cylinder unit has at least one hydraulic pump (101). Schienenfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeder Abstützzylinder (40) und Wankzylinder (46) jeweils direkt mit einem Kolbenspeicher (107, 112) verbunden ist.Rail vehicle according to one of the preceding claims, characterized in that each support cylinder (40) and roll cylinder (46) is in each case directly connected to a piston accumulator (107, 112).
EP12167487.3A 2011-05-17 2012-05-10 Railway crane Not-in-force EP2524849B1 (en)

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DE4237948C2 (en) 1992-11-06 1994-08-18 Mannesmann Ag Crane, especially railroad crane
EP1078838A1 (en) * 1999-08-25 2001-02-28 Atecs Mannesmann AG Running gear for a rail vehicle transporting loads
DE102005027596A1 (en) 2005-06-14 2006-12-28 Meinhard Stulz Railway crane has extension arm fixed to its upper carriage which holds pivotable adaptor to take different tools

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EP2524849B1 (en) 2016-02-03
EP2524849A8 (en) 2013-02-27
CN102785672A (en) 2012-11-21
DE102011101803A1 (en) 2013-04-04
HK1174879A1 (en) 2013-06-21
DE102011101803B4 (en) 2014-11-20
CN102785672B (en) 2016-08-17

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