EP0688902A1 - Continuous measuring method of the resistance to lateral displacement of a railway track - Google Patents
Continuous measuring method of the resistance to lateral displacement of a railway track Download PDFInfo
- Publication number
- EP0688902A1 EP0688902A1 EP95890093A EP95890093A EP0688902A1 EP 0688902 A1 EP0688902 A1 EP 0688902A1 EP 95890093 A EP95890093 A EP 95890093A EP 95890093 A EP95890093 A EP 95890093A EP 0688902 A1 EP0688902 A1 EP 0688902A1
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- Prior art keywords
- track
- vibration
- vibration exciter
- transverse displacement
- displacement resistance
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B35/00—Applications of measuring apparatus or devices for track-building purposes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/16—Guiding or measuring means, e.g. for alignment, canting, stepwise propagation
Definitions
- the invention relates to a method for the continuous measurement of the transverse displacement resistance of a track, the track being set into horizontal vibrations running transverse to the longitudinal direction of the track with the aid of a vibration exciter, and to a measuring device and a track stabilizer for carrying out the method.
- a continuously movable track construction machine in which a track tamping machine is connected to a stabilizing or vibrating unit arranged on its own machine frame.
- the latter can also be designed to be movable independently and can be used independently of other track construction machines.
- this - also known as a dynamic track stabilizer the track stability and thus above all the lateral resistance of a track with a loose ballast bed loosened as a result of tamping or the like can be improved considerably by the artificially self-resulting ballast bed compaction due to the traffic load in a relatively large period of time anticipating a single work passage.
- both rails are gripped by rolling tools of the stabilization unit and the track grating is set into horizontal vibrations running transversely to the machine longitudinal direction by means of a hydraulically actuated vibration exciter.
- the quality of the ballast bed compaction can be derived from the size of the transverse displacement resistance (QVW), which determines the lateral positional stability of the Track determined.
- QVW transverse displacement resistance
- This QVW is usually measured separately from the use of track construction machines. For example, an article in the magazine "Transport International", June 1981, pages 3-6, describes such a measurement, which is carried out on individual sleepers of a track. The respective rail fastening means are first removed and the end face of a sleeper is exposed, after which the measuring device consisting of a hydraulic cylinder is attached to the sleeper head and the sleeper is slightly shifted in its longitudinal direction. Based on the force acting on the threshold and the displacement, conclusions are drawn about the QVW. This type of measurement requires a lot of work and can only be used on a random basis.
- the object of the present invention is to create a method of the type described in the introduction, in which the measurement results enable a reliable statement about the transverse displacement resistance without impairing the track position.
- This object is achieved according to the invention with a method of the generic type in that the power required for the operation of the vibration exciter is registered as a measured value correlating to the transverse displacement resistance.
- This process step is based on the knowledge that the power to be applied by the vibration exciter for the track oscillation or the energy transferred into the track is related to the transverse displacement resistance counteracting the track oscillation. If, for example, factors influencing the vibration power, such as vibration frequency, vibration amplitude and static load, are kept constant, the power required for the vibration exciter can be directly applied to the QVW be inferred.
- This process has the particular economic advantage that a QVW measurement can be carried out without an additional process step, even in conjunction with track stabilization, for artificially anticipating the initial setting of a track. In connection with the track stabilization that concludes the track position correction work, there is a reliable and documentable statement regarding the transverse shifting resistance that relates to the entire track section and that is advantageous in terms of the importance of the transverse shifting resistance for safety.
- a machine 1 shown in FIG. 1, referred to as a track stabilizer, has an elongated machine frame 2, which is supported on rails 4 of a track 5 via rail carriages 3.
- a travel drive 6 is assigned to each rail bogie 3, while a further hydrodynamic travel drive 7 is provided for the transfer run. All the drives of the machine 1 are acted upon by a central energy supply device 8 and a hydraulic unit 9 of a hydraulic system 10.
- Cabins arranged at the end contain operating and control devices 11 both for the forward movement of the machine 1 and for the use of two in the middle between the rail carriages 3 the oscillating or stabilizing units 12 connected to the machine frame 2 and arranged one behind the other in the longitudinal direction of the track.
- flanged wheels 13 and pivotable roller plates 14 These have tools consisting of flanged wheels 13 and pivotable roller plates 14.
- the flanged rollers 13 can be pressed against the inside of the rails 4 in the transverse direction of the track by means of spreading drives (not shown in more detail) and can be subjected to approximately horizontal vibrations running transversely to the machine longitudinal direction by means of their own vibration exciter 21 connected to the vibration unit 12.
- Vertical height adjustment drives 15 articulated on the machine frame 2 and designed as hydraulic cylinders serve to transmit a static load onto the track 5.
- the track lowering which can be achieved in connection with the track vibration is controlled by means of a leveling reference system 16 which, as a measuring basis, a wire chord 17 stretched between the rail carriages 3 has 4 per rail.
- a height-adjustable sensing element 18 designed as a flanged roller is guided between the two vibrating units 12 on the track 5 and carries, per rail 4, a height sensor 19 which interacts with the respective wire chord 17.
- Each vibration unit 12 is assigned a measuring device 20, for example designed as an acceleration sensor, in order to thereby detect the vibration amplitudes generated by the vibration exciter 21.
- Another measuring device 22 is used to detect the oscillation frequency of the vibration exciter 21.
- Each height adjustment drive 15 is assigned a pressure transmitter 23 for detecting the static load acting on the track 5.
- a further pressure transmitter 24 is in each case between a hydraulic pump 25 (FIG. 2) and the vibration exciter 21 for detecting the operating pressure which acts on the vibration exciter 21 intended.
- Additional measuring devices 26, 27 are used to record the speed of travel or working speed of the machine 1 or to determine the distance traveled. All measuring devices and pressure transmitters are connected to a computing unit 28 and a recording device 29.
- the already mentioned pressure transmitter 24 is shown in the hydraulic circuit diagram according to FIG. 2 and is provided for detecting the operating pressure between the hydraulic pump 25 and the vibration exciter 21 which can be acted upon by a hydraulic motor 30.
- Fig. 3 the structure of the measuring device for determining the transverse displacement resistance is shown schematically.
- the lateral acceleration a [m / s2] is detected by the measuring device 20.
- the oscillation amplitude xitude is finally fed to the computing unit 28 via the double integration.
- F denotes the oscillation frequency, which is also fed to the computing unit 28.
- the static load F v is determined separately for both the left and the right height adjustment drive 15.
- the pressure transmitter 24 the operating or filling pressure p p required to act on the vibration exciter 21 is passed on to the computing unit 28.
- the path covered by the machine 1 with respect to a fixed point is registered by the measuring device 27, so that the transverse displacement resistance determined can in each case be assigned precisely to the track sections.
- the action on the transverse displacement resistance which is dependent on the right of way speed can be registered or taken into account.
- the value In order that the influence on the QVW due to a fluctuating vertical load or static load (during the use of a track stabilizer to lower the track 5 into the desired position) is eliminated, the value must still be standardized, for example, to 100 kN vertical load (QVW100).
- the adjustment angle of the hydraulic pump is not changed to maintain a constant stroke volume.
- the absolute value of the QVW can be measured.
- the qualitative behavior of the QVW can be measured in any case during the stabilization process (lowering the track to the desired position).
- the QVW measurement can optionally be carried out together with a controlled lowering of the track 5 to the desired target position (track stabilization) or in a separate test run, in which the Track 5 that has already been stabilized is not lowered under a correspondingly minimal loading of the height adjustment drives 15, but is only set in horizontal transverse vibrations.
- other energy systems for example electrical energy, can also be used to act on the vibration exciter 21.
- the change in current is to be used as the measured value correlating to the QVW.
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur kontinuierlichen Messung des Querverschiebewiderstandes eines Gleises, wobei das Gleis mit Hilfe eines Schwingungserregers in horizontale, quer zur Gleislängsrichtung verlaufende Schwingungen versetzt wird, sowie eine Meßvorrichtung und einen Gleisstabilisator zur Durchführung des Verfahrens.The invention relates to a method for the continuous measurement of the transverse displacement resistance of a track, the track being set into horizontal vibrations running transverse to the longitudinal direction of the track with the aid of a vibration exciter, and to a measuring device and a track stabilizer for carrying out the method.
Es ist gemäß AT 380 280 B bereits eine kontinuierlich verfahrbare Gleisbaumaschine bekannt, bei der eine Gleisstopfmaschine mit einem auf einem eigenen Maschinenrahmen angeordneten Stabilisations- bzw. Schwingaggregat verbunden ist. Letzteres kann auch selbständig verfahrbar ausgebildet werden und unabhängig von anderen Gleisbaumaschinen zum Einsatz kommen. Mit dieser - auch als dynamischer Gleisstabilisator bezeichneten - Gleisbaumaschine ist die Lagefestigkeit und damit vor allem der Querverschiebewiderstand eines Gleises mit einer infolge einer Unterstopfung oder dergleichen gelockerten Schotterbettung erheblich verbesserbar, indem die durch die Verkehrsbelastung in einem relativ großem Zeitraum sich von selbst ergebende Schotterbettverdichtung künstlich in einer einzigen Arbeitsdurchfahrt vorweggenommen wird. Zu diesem Zweck werden beide Schienen durch Rollwerkzeuge des Stabilisationsaggregates erfaßt und der Gleisrost mittels eines hydraulisch beaufschlagbaren Schwingungserregers in horizontale, quer zur Maschinenlängsrichtung verlaufende Schwingungen versetzt.According to AT 380 280 B, a continuously movable track construction machine is already known, in which a track tamping machine is connected to a stabilizing or vibrating unit arranged on its own machine frame. The latter can also be designed to be movable independently and can be used independently of other track construction machines. With this - also known as a dynamic track stabilizer - the track stability and thus above all the lateral resistance of a track with a loose ballast bed loosened as a result of tamping or the like can be improved considerably by the artificially self-resulting ballast bed compaction due to the traffic load in a relatively large period of time anticipating a single work passage. For this purpose, both rails are gripped by rolling tools of the stabilization unit and the track grating is set into horizontal vibrations running transversely to the machine longitudinal direction by means of a hydraulically actuated vibration exciter.
Gleichzeitig wird durch am Maschinenrahmen befestigte, vertikale Antriebe eine statische Auflast auf das Stabilisationsaggregat bzw. das Gleis aufgebracht und dieses in die Schotterbettung gleichsam eingerieben, wodurch diese verdichtet und das Gleis entsprechend in eine Soll-Lage abgesenkt wird. Daraus resultiert neben einer dauerhaften und gleichmäßig elastischen Schotterbettung auch eine Erhöhung des durch die Reibung zwischen Schwelle und Schotter bestimmten Querverschiebewiderstandes.At the same time, vertical drives attached to the machine frame apply a static load to the stabilization unit or the track and, as it were, rub it into the ballast bedding, thereby compacting it and lowering the track accordingly to a desired position. In addition to permanent and evenly elastic ballast bedding, this also results in an increase in the lateral displacement resistance determined by the friction between the sleeper and ballast.
Die Qualität der Schotterbettverdichtung läßt sich aus der Größe des Querverschiebewiderstandes (QVW) ableiten, der die seitliche Lagestabilität des Gleises bestimmt. Die Messung dieses QVW erfolgt üblicherweise getrennt vom Einsatz der Gleisbaumaschinen. Ein Artikel in der Zeitschrift "Transport International", Juni 1981, Seiten 3-6, beschreibt beispielsweise eine solche Messung, die an einzelnen Schwellen eines Gleises vorgenommen wird. Dabei werden zunächst die jeweiligen Schienenbefestigungsmittel entfernt und die Stirnseite einer Schwelle freigelegt, wonach die aus einem Hydraulikzylinder bestehende Meßeinrichtung an den Schwellenkopf angesetzt und die Schwelle in ihrer Längsrichtung geringfügig verschoben wird. Aufgrund der auf die Schwelle einwirkenden Kraft und des Verschiebeweges werden Rückschlüsse auf den QVW gezogen. Diese Art der Messung erfordert beträchtlichen Arbeitsaufwand und kann überdies nur stichprobenweise eingesetzt werden.The quality of the ballast bed compaction can be derived from the size of the transverse displacement resistance (QVW), which determines the lateral positional stability of the Track determined. This QVW is usually measured separately from the use of track construction machines. For example, an article in the magazine "Transport International", June 1981, pages 3-6, describes such a measurement, which is carried out on individual sleepers of a track. The respective rail fastening means are first removed and the end face of a sleeper is exposed, after which the measuring device consisting of a hydraulic cylinder is attached to the sleeper head and the sleeper is slightly shifted in its longitudinal direction. Based on the force acting on the threshold and the displacement, conclusions are drawn about the QVW. This type of measurement requires a lot of work and can only be used on a random basis.
Schließlich ist es noch durch die US 5 127 333 bekannt, eine Meßvorrichtung zur Messung der Schwingungsamplitude des Stabilisationsaggregates vorzusehen, um damit auf den Querverschiebewiderstand rückschließen zu können.Finally, it is also known from US Pat. No. 5,127,333 to provide a measuring device for measuring the oscillation amplitude of the stabilization unit in order to be able to draw conclusions about the transverse displacement resistance.
Die Aufgabe der vorliegenden Erfindung liegt nun in der Schaffung eines Verfahrens der eingangs beschriebenen Art, bei dem die Meßergebnisse ohne Beeinträchtigung der Gleislage eine zuverlässige Aussage über den Querverschiebewiderstand ermöglichen.The object of the present invention is to create a method of the type described in the introduction, in which the measurement results enable a reliable statement about the transverse displacement resistance without impairing the track position.
Diese Aufgabe wird erfindungsgemäß mit einem Verfahren der gattungsgemäßen Art dadurch gelöst, daß die für den Betrieb des Schwingungserregers erforderliche Leistung als zum Querverschiebewiderstand korrelierender Meßwert registriert wird.This object is achieved according to the invention with a method of the generic type in that the power required for the operation of the vibration exciter is registered as a measured value correlating to the transverse displacement resistance.
Diesem Verfahrensschritt liegt die Erkenntnis zugrunde, daß die durch den Schwingungserreger für die Gleisschwingung aufzubringende Leistung bzw. in das Gleis übertragene Energie in Zusammenhang mit dem der Gleisschwingung entgegenwirkenden Querverschiebewiderstand steht. Werden beispielsweise die Schwingleistung beeinflussende Faktoren, wie Schwingfrequenz, Schwingamplitude und statische Auflast, konstant gehalten, kann aus der für den Schwingungserreger erforderlichen Leistung direkt auf den QVW rückgeschlossen werden. Dieses Verfahren hat den wirtschaftlich besonderen Vorteil, daß eine QVW-Messung ohne einen zusätzlichen Verfahrensschritt auch in Verbindung mit einer Gleisstabilisation zur künstlichen Vorwegnahme der Anfangssetzungen eines Gleises durchführbar ist. Damit liegt in Verbindung mit der die Gleislagekorrekturarbeiten abschließenden Gleisstabilisation eine den gesamten Gleisabschnitt betreffende zuverlässige und - in Hinsicht auf die Bedeutung des Querverschiebewiderstandes für die Sicherheit in vorteilhafter Weise - dokumentierbare Aussage über den Querverschiebewiderstand vor.This process step is based on the knowledge that the power to be applied by the vibration exciter for the track oscillation or the energy transferred into the track is related to the transverse displacement resistance counteracting the track oscillation. If, for example, factors influencing the vibration power, such as vibration frequency, vibration amplitude and static load, are kept constant, the power required for the vibration exciter can be directly applied to the QVW be inferred. This process has the particular economic advantage that a QVW measurement can be carried out without an additional process step, even in conjunction with track stabilization, for artificially anticipating the initial setting of a track. In connection with the track stabilization that concludes the track position correction work, there is a reliable and documentable statement regarding the transverse shifting resistance that relates to the entire track section and that is advantageous in terms of the importance of the transverse shifting resistance for safety.
Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous developments of the invention result from the subclaims.
Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher beschrieben.The invention is described in more detail below with reference to an embodiment shown in the drawing.
Es zeigen:
- Fig. 1 eine Seitenansicht einer als Gleisstabilisator bekannten Gleisbaumaschine zur Ermittlung des Querverschiebewiderstandes in Verbindung mit einer kontrollierten Gleisabsenkung,
- Fig. 2 einen Teil eines Schaltplanes für das Hydrauliksystem zur Beaufschlagung des Schwingungserregers, und
- Fig. 3 eine vereinfachte Schemazeichnung bezüglich verschiedener Meßvorrichtungen zur Ermittlung des Querverschiebewiderstandes.
- 1 is a side view of a track construction machine known as a track stabilizer for determining the transverse displacement resistance in connection with a controlled track lowering,
- Fig. 2 shows a part of a circuit diagram for the hydraulic system for acting on the vibration exciter, and
- Fig. 3 is a simplified schematic drawing with respect to various measuring devices for determining the transverse displacement resistance.
Eine in Fig. 1 dargestellte, als Gleisstabilisator bezeichnete Maschine 1 weist einen langgestreckten Maschinenrahmen 2 auf, der sich über Schienenfahrwerke 3 auf Schienen 4 eines Gleises 5 abstützt. Für die kontinuierliche Arbeitsvorfahrt der als Regelfahrzeug ausgebildeten Maschine 1 ist jedem Schienenfahrwerk 3 ein Fahrantrieb 6 zugeordnet, während ein weiterer hydrodynamischer Fahrantrieb 7 für die Überstellfahrt vorgesehen ist. Die Beaufschlagung sämtlicher Antriebe der Maschine 1 erfolgt durch eine zentrale Energieversorgungseinrichtung 8 und ein Hydraulikaggregat 9 eines Hydrauliksystems 10. Endseitig angeordnete Fahrkabinen beinhalten Bedienungs- und Steuereinrichtungen 11 sowohl für die Vorfahrt der Maschine 1 als auch für den Arbeitseinsatz von zwei mittig zwischen den Schienenfahrwerken 3 mit dem Maschinenrahmen 2 verbundenen und in Gleislängsrichtung hintereinander angeordneten Schwing- bzw. Stabilisationsaggregaten 12. Diese weisen aus Spurkranzrollen 13 und verschwenkbaren Rollentellern 14 bestehende Werkzeuge auf. Die Spurkranzrollen 13 sind über nicht näher dargestellte Spreizantriebe in Gleisquerrichtung an die Innenseiten der Schienen 4 anpreßbar und mittels eines eigenen, mit dem Schwingaggregat 12 verbundenen Schwingungserregers 21 mit etwa horizontalen, quer zur Maschinenlängsrichtung verlaufenden Schwingungen beaufschlagbar. Vertikale, am Maschinenrahmen 2 angelenkte und als Hydraulikzylinder ausgebildete Höhenverstellantriebe 15 dienen zur Übertragung einer statischen Auflast auf das Gleis 5. Die damit in Verbindung mit der Gleisschwingung erzielbare Gleisabsenkung wird anhand eines Nivellierbezugsystems 16 gesteuert, welche als Meßbasis eine zwischen den Schienenfahrwerken 3 gespannte Drahtsehne 17 pro Schiene 4 aufweist. Ein höhenverstellbares, als Spurkranzrolle ausgebildetes Tastorgan 18 wird zwischen den beiden Schwingaggregaten 12 auf dem Gleis 5 geführt und trägt je Schiene 4 einen mit der jeweiligen Drahtsehne 17 zusammenwirkenden Höhenmeßfühler 19.A machine 1 shown in FIG. 1, referred to as a track stabilizer, has an
Jedem Schwingaggregat 12 ist eine beispielsweise als Beschleunigungsaufnehmer ausgebildete Meßvorrichtung 20 zugeordnet, um damit die vom Schwingungserreger 21 erzeugten Schwingamplituden zu erfassen. Eine weitere Meßvorrichtung 22 dient zum Erfassen der Schwingfrequenz des Schwingungserregers 21. Jedem Höhenverstellantrieb 15 ist ein Druckgeber 23 zum Erfassen der auf das Gleis 5 einwirkenden statischen Auflast zugeordnet. Ein weiterer Druckgeber 24 ist jeweils zwischen einer Hydraulikpumpe 25 (Fig. 2) und dem Schwingungserreger 21 zur Erfassung des zur Beaufschlagung des Schwingungserregers 21 dienenden Betriebsdruckes vorgesehen. Weitere Meßvorrichtungen 26,27 dienen zum Erfassen der Vorfahrt- bzw. Arbeitsgeschwindigkeit der Maschine 1 bzw. zur Ermittlung der zurückgelegten Wegstrecke. Sämtliche Meßvorrichtungen und Druckgeber sind mit einer Recheneinheit 28 und einer Aufzeichnungseinrichtung 29 verbunden.Each
Im Hydraulik-Schaltplan gemäß Fig. 2 ist der bereits erwähnte Druckgeber 24 dargestellt, der zur Erfassung des Betriebsdruckes zwischen der Hydraulikpumpe 25 und dem durch einen Hydromotor 30 beaufschlagbaren Schwingungserreger 21 vorgesehen ist.The already mentioned
In Fig. 3 ist der Aufbau der Meßeinrichtung zur Ermittlung des Querverschiebewiderstandes schematisch dargestellt. Durch die Meßvorrichtung 20 wird die Querbeschleunigung a [m/s²] erfaßt. Über die doppelte Integration wird schließlich die Schwingamplitude x₀ der Recheneinheit 28 zugeführt. Mit f ist die Schwingfrequenz bezeichnet, die ebenfalls der Recheneinheit 28 zugeführt wird. Die statische Auflast Fv wird sowohl für den linken als auch den rechten Höhenverstellantrieb 15 gesondert ermittelt. Mit dem Druckgeber 24 wird der zur Beaufschlagung des Schwingungserregers 21 erforderliche Betriebs- oder Fülldruck pp an die Recheneinheit 28 weitergegeben. Durch die Meßvorrichtung 27 wird der von der Maschine 1 in bezug auf einen Festpunkt zurückgelegte Weg registriert, so daß der ermittelte Querverschiebewiderstand jeweils den Gleisabschnitten örtlich genau zugeordnet werden kann. Mit der von der Meßvorrichtung 26 erfaßten Geschwindigkeit der Maschine 1 kann die von der Vorfahrtgeschwindigkeit abhängige Einwirkung auf den Querverschiebewiderstand registriert bzw. berücksichtigt werden.In Fig. 3, the structure of the measuring device for determining the transverse displacement resistance is shown schematically. The lateral acceleration a [m / s²] is detected by the
Für den im folgenden angeführten theoretischen Hintergrund zur Ermittlung des Querverschiebewiderstandes QVW werden folgende Symbole verwendet:
- µ
- Reibwert Schotterbett, Schwelle
- dt
- Zeitdifferential
- dW
- Energiedifferential
- f
- Schwingfrequenz
- Fv
- statische Auflast bzw. Vertikalkraft
- k₀
- Koeffizient
- kv
- Koeffizient
- k'₀
- Koeffizient
- k'v
- Koeffizient
- np
Drehzahl Schwingaggregat 12- Pab
- abgeführte Leistung
- PDGS
- Schwingleistung des Schwingaggregates 12
- Pg
- Schwingleistung Gleisrost und Schotter
- pp
- Betriebsdruck zur Beaufschlagung des Schwingungserregers 21
- Pr
- Reibleistung
- Prot
- Rotationsleistungsanteil
- Pzu
- zugeführte Leistung
- Qp
Förderleistung Hydraulikpumpe 25- QVW
- Querverschiebewiderstand
- QVW₁₀₀
- normierter Querverschiebewiderstand (Auflast 100kN)
- t
- Zeit
- Vp
- Füllvolumen der Hydraulikpumpe 25
- x₀
- Schwingamplitude des Schwingaggregates 12
- kN
- Kilonewton
- µ
- Coefficient of friction ballast bed, threshold
- German
- Time differential
- dW
- Energy differential
- f
- Vibration frequency
- F v
- static load or vertical force
- k₀
- coefficient
- k v
- coefficient
- k'₀
- coefficient
- k ' v
- coefficient
- n p
-
Vibration unit speed 12 - P down
- dissipated performance
- P DGS
- Vibration performance of the
vibration unit 12 - P g
- Vibration performance track grate and ballast
- p p
- Operating pressure to apply
vibration exciter 21 - P r
- Friction power
- P red
- Rotational power share
- P to
- supplied power
- Q p
- Delivery rate
hydraulic pump 25 - QVW
- Lateral displacement resistance
- QVW₁₀₀
- standardized transverse displacement resistance (load 100kN)
- t
- time
- V p
- Filling volume of the
hydraulic pump 25 - x₀
- Vibration amplitude of the
vibration unit 12 - kN
- Kilonewtons
Zur Erläuterung des theoretischen Hintergrundes für die Ermittlung des Querverschiebewiderstandes werden folgende Gleichungen angeführt:The following equations are given to explain the theoretical background for the determination of the transverse displacement resistance:
In das Gleis 5 übertragene Reibleistung (Pr):
Zugeführte Leistung (Pzu):
Konstante abgeführte Leistung (Pab):
Die QVW-Beziehung ergibt sich aus folgendem Leistungsgleichgewicht:
Damit der Einfluß auf den QVW durch eine (während des Arbeitseinsatzes eines Gleisstabilisators zur Absenkung des Gleises 5 in die Soll-Lage) schwankende Vertikalbelastung bzw. statische Auflast wegfällt, muß der Wert noch z.B. auf 100kN vertikale Auflast (QVW₁₀₀) normiert werden. Der Verstellwinkel der Hydraulikpumpe wird zur Aufrechterhaltung eines konstanten Hubvolumens nicht verändert. (Alternativ wäre auch eine Änderung des Hubvolumens möglich; in diesem Fall müßte allerdings die Änderung erfaßt und in die Leistungsmessung miteinbezogen werden.)
Bei konstanten Werten für die Schwingamplitude x₀, die Schwingfrequenz f und die statische Auflast Fv ergibt sich folgende Beziehung:
Wie den Gleichungen zu entnehmen ist, läßt sich prinzipiell sogar der Absolutwert des QVW messen. Darüber hinaus läßt sich in jedem Fall das qualitative Verhalten des QVW während des Stabilisiervorganges (Gleisabsenkung in die Soll-Lage) messen.As can be seen from the equations, in principle the absolute value of the QVW can be measured. In addition, the qualitative behavior of the QVW can be measured in any case during the stabilization process (lowering the track to the desired position).
Die QVW-Messung kann wahlweise gemeinsam mit einer kontrollierten Absenkung des Gleises 5 in die gewünschte Soll-Lage (Gleisstabilisation) oder aber auch in einer eigenen Meßfahrt durchgeführt werden, bei der das bereits stabilisierte Gleis 5 unter entsprechend minimaler Beaufschlagung der Höhenverstellantriebe 15 nicht abgesenkt, sondern lediglich in horizontale Querschwingungen versetzt wird. Selbstverständlich sind anstelle des beschriebenen Hydrauliksystems auch andere Energiesysteme, beispielsweise elektrische Energie, zur Beaufschlagung des Schwingungserregers 21 einsetzbar. In diesem Fall ist dann die Stromänderung als zum QVW korrelierender Meßwert heranzuziehen.The QVW measurement can optionally be carried out together with a controlled lowering of the track 5 to the desired target position (track stabilization) or in a separate test run, in which the Track 5 that has already been stabilized is not lowered under a correspondingly minimal loading of the height adjustment drives 15, but is only set in horizontal transverse vibrations. Of course, instead of the hydraulic system described, other energy systems, for example electrical energy, can also be used to act on the
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AT120394 | 1994-06-17 | ||
AT1203/94 | 1994-06-17 | ||
AT120394 | 1994-06-17 |
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EP95890093A Expired - Lifetime EP0688902B1 (en) | 1994-06-17 | 1995-05-12 | Continuous measuring method of the resistance to lateral displacement of a railway track |
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US (1) | US5591915A (en) |
EP (1) | EP0688902B1 (en) |
JP (1) | JP3660716B2 (en) |
CN (1) | CN1088133C (en) |
AT (1) | ATE184935T1 (en) |
AU (1) | AU687185B2 (en) |
CA (1) | CA2151993C (en) |
CZ (1) | CZ283590B6 (en) |
DE (1) | DE59506872D1 (en) |
ES (1) | ES2139175T3 (en) |
PL (1) | PL176678B1 (en) |
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AT518195A1 (en) * | 2016-01-26 | 2017-08-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Method for compacting the ballast bed of a track and tamping unit |
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- 1995-05-12 ES ES95890093T patent/ES2139175T3/en not_active Expired - Lifetime
- 1995-05-12 DE DE59506872T patent/DE59506872D1/en not_active Expired - Lifetime
- 1995-05-12 EP EP95890093A patent/EP0688902B1/en not_active Expired - Lifetime
- 1995-06-02 US US08/458,264 patent/US5591915A/en not_active Expired - Lifetime
- 1995-06-09 CZ CZ951510A patent/CZ283590B6/en not_active IP Right Cessation
- 1995-06-09 PL PL95309068A patent/PL176678B1/en not_active IP Right Cessation
- 1995-06-14 RU RU95110059A patent/RU2105836C1/en not_active IP Right Cessation
- 1995-06-14 SK SK791-95A patent/SK282733B6/en not_active IP Right Cessation
- 1995-06-16 CN CN95107014A patent/CN1088133C/en not_active Expired - Fee Related
- 1995-06-16 JP JP15001195A patent/JP3660716B2/en not_active Expired - Fee Related
- 1995-06-16 CA CA002151993A patent/CA2151993C/en not_active Expired - Fee Related
- 1995-06-16 AU AU21747/95A patent/AU687185B2/en not_active Ceased
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Also Published As
Publication number | Publication date |
---|---|
SK79195A3 (en) | 1996-01-10 |
AU2174795A (en) | 1996-01-04 |
JPH082413A (en) | 1996-01-09 |
ES2139175T3 (en) | 2000-02-01 |
CA2151993A1 (en) | 1995-12-18 |
CN1114994A (en) | 1996-01-17 |
CN1088133C (en) | 2002-07-24 |
ATE184935T1 (en) | 1999-10-15 |
SK282733B6 (en) | 2002-11-06 |
JP3660716B2 (en) | 2005-06-15 |
RU2105836C1 (en) | 1998-02-27 |
CZ283590B6 (en) | 1998-05-13 |
PL309068A1 (en) | 1995-12-27 |
US5591915A (en) | 1997-01-07 |
AU687185B2 (en) | 1998-02-19 |
CZ151095A3 (en) | 1996-01-17 |
DE59506872D1 (en) | 1999-10-28 |
EP0688902B1 (en) | 1999-09-22 |
CA2151993C (en) | 2004-12-14 |
PL176678B1 (en) | 1999-07-30 |
RU95110059A (en) | 1997-05-27 |
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