EP0575696B1 - Running gear for railway vehicles - Google Patents
Running gear for railway vehicles Download PDFInfo
- Publication number
- EP0575696B1 EP0575696B1 EP93103628A EP93103628A EP0575696B1 EP 0575696 B1 EP0575696 B1 EP 0575696B1 EP 93103628 A EP93103628 A EP 93103628A EP 93103628 A EP93103628 A EP 93103628A EP 0575696 B1 EP0575696 B1 EP 0575696B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel set
- bogie frame
- bogie
- running mechanism
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
- B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
- B61F5/386—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles fluid actuated
-
- 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
- B61F15/00—Axle-boxes
- B61F15/12—Axle-boxes with roller, needle, or ball bearings
- B61F15/16—Axle-boxes with roller, needle, or ball bearings the axle being slidable or tiltable in the bearings
- B61F15/18—Axle-boxes with roller, needle, or ball bearings the axle being slidable or tiltable in the bearings and having springs opposing such movements
Definitions
- the invention relates to a running gear for rail vehicles with at least six wheel sets, three wheel sets each being connected to a bogie frame via coupling and guide elements, in particular for longitudinal and transverse guidance, and the bogie frames each being rotatable relative to a vehicle frame.
- drives are known in which the middle wheel set of each bogie is provided with a sufficiently large free transverse play with respect to the bogie frame.
- the middle wheel set can adjust freely when traveling in arches with small radii of curvature due to the lack of restoring forces between the wheel set and the bogie frame in the transverse direction.
- the curve running behavior of such rail vehicles then resembles the behavior of rail vehicles with biaxial bogies and a center distance which corresponds to the distance between the two end axes of the biaxial bogies.
- the object of the invention is to provide a drive of the generic type which improves the sheet running ability and minimizes the track load even with large cant deficiency amounts.
- a transversely acting force-controlled actuator is arranged on each side of the middle wheel set between the bogie frame and the wheel set, which is used to adjust the middle wheel set when cornering on an outside of the bow via the control device as a function of a measuring element for detecting the turning angle the bogie frame is adjustable.
- This design makes it possible to shift the middle wheel set into an optimal position for the respective curve travel with regard to the track load and the force distribution between the individual wheel sets. If a rail vehicle equipped in this way travels a curve, the actuators are actuated in the direction of the outside of the curve, so that the center wheel set is moved away from the rail on the inside of the curve.
- the force acting in the actuators and the corresponding path can be adapted within the limits given by the possible relative path between the wheel set and the bogie frame.
- a sensor is arranged as a measuring element between the vehicle frame and the bogie frame and the actuators are adjustable in accordance with the turning angle determined by the sensor.
- the actuators are additionally formed by a set preload for transverse guidance of the wheel set.
- a sensor is arranged on each bogie frame and the actuators can be adjusted jointly via the control device in accordance with the mean value of the two unscrewing angles.
- a simple design is that the actuators are designed as air bellows cylinders.
- the end wheel sets 2 and the center wheel set 3 are coupled to the bogie frame 1 via longitudinal guides 6 and transverse guides 5, which engage the wheel set bearing 4.
- Vertical coupling elements as well as additional equipment (brake, motor, etc.) are not shown in detail for reasons of clarity.
- actuators 7 are additionally connected in parallel on both sides.
- air bellows cylinders have been selected as actuators 7, which are depressurized when driving in a straight line. Compressed air is applied to the inner air bellows cylinder 7 of the wheel set 3 during the arc travel, thereby ensuring the required force or the change in the path of the center wheel set 3 to the outside.
- actuators such as compressed air cylinders and hydraulic cylinders, can also be used instead of the air bellows cylinder 7.
- a control device for controlling the air bellows cylinder 7 by a sensor 8 is shown.
- the turning angle between the bogie frame 1 and an indicated vehicle frame 9 is determined from a distance measurement between the sensor 8 and a measuring surface 12 attached to the vehicle frame 9, taking into account the lever arm to the turning center 13.
- the angle measurement is expediently carried out in the longitudinal direction, since the displaceability between bogie frame 1 and vehicle frame 9 in the longitudinal direction is generally smaller than in the lateral direction.
- FIG. 3 Another embodiment in which the actuators 7 'on the middle wheel set 3 have resilient properties in the transverse direction at the same time and are able to guide the wheel set 3 is shown in FIG. 3.
- the sensor 8 on the leading bogie 1 and the sensor 8 'on the trailing bogie 1' each calculate the turning angle ⁇ or ⁇ 'with respect to the vehicle frame 9.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Platform Screen Doors And Railroad Systems (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Laufwerk für Schienenfahrzeuge mit wenigstens sechs Radsätzen, wobei jeweils drei Radsätze über Kopplungs- und Führungselemente, insbesondere zur Längs- und Querführung, mit einem Drehgestellrahmen verbunden sind und die Drehgestellrahmen jeweils gegenüber einem Fahrzeugrahmen eine Verdrehbarkeit besitzen.The invention relates to a running gear for rail vehicles with at least six wheel sets, three wheel sets each being connected to a bogie frame via coupling and guide elements, in particular for longitudinal and transverse guidance, and the bogie frames each being rotatable relative to a vehicle frame.
Es besteht hierbei das Problem, daß die Kurvengängigkeit von Schienenfahrzeugen mit dreiachsigen Drehgestellen maßgeblich von den Mittelradsätzen der Drehgestelle beeinflußt wird und die mittleren Radsätze bekannter Ausbildungen bei kleinen Kurvenradien dazu neigen, an der Bogeninnenseite anzulaufen. Dadurch entsteht zwischen dem Innenrad und der Schiene eine Querkraft, die den Radsatz zur Bogenaußenseite drückt und in Verbindung mit kegeligen Radprofilen ein entgegen dem Bogendrehsinn gerichtetes Moment erzeugt.There is the problem that the cornering of rail vehicles with three-axle bogies is significantly influenced by the center wheel sets of the bogies and the middle wheel sets of known designs with small curve radii tend to run up on the inside of the curve. This creates a transverse force between the inner wheel and the rail, which presses the wheel set to the outside of the bend and, in conjunction with tapered wheel profiles, generates a torque directed counter to the direction of rotation of the bend.
Dabei bewirken Kraft und Moment - verglichen mit einem Freilauf des mittleren Radsatzes - eine Zunahme des Niveaus der Rad-Schienen-Kräfte an den Endachsen.Force and moment - compared to a freewheeling of the middle wheel set - cause an increase in the level of the wheel-rail forces on the end axles.
Zur Verbesserung des Bogenlaufes von Schienenfahrzeugen mit dreiachsigen Drehgestellen sind Laufwerke bekannt, bei denen der mittlere Radsatz eines jeden Drehgestelles mit einem genügend großen freien Querspiel gegenüber dem Drehgestellrahmen versehen ist. Auf diese Weise kann sich der mittlere Radsatz bei der Fahrt in Bögen mit kleinen Krümmungsradien, bedingt durch das Fehlen von Rückstellkräften zwischen Radsatz und Drehgestellrahmen in Querrichtung, frei einstellen.To improve the curvature of rail vehicles with three-axle bogies, drives are known in which the middle wheel set of each bogie is provided with a sufficiently large free transverse play with respect to the bogie frame. To this The middle wheel set can adjust freely when traveling in arches with small radii of curvature due to the lack of restoring forces between the wheel set and the bogie frame in the transverse direction.
Das Bogenlaufverhalten derartiger Schienenfahrzeuge ähnelt dann dem Verhalten von Schienenfahrzeugen mit zweiachsigen Drehgestellen und einem Achsabstand, der der Entfernung der beiden Endachsen der dreiachsigen Drehgestelle entspricht.The curve running behavior of such rail vehicles then resembles the behavior of rail vehicles with biaxial bogies and a center distance which corresponds to the distance between the two end axes of the biaxial bogies.
Derartige Konstruktionen weisen den Nachteil auf, daß bei Fahrten mit Fliehkraftüberschuß der mittlere Radsatz nicht an der Übertragung der Fliehkräfte des Fahrzeugkastens und des Drehgestellrahmens auf das Gleis teilnimmt und sich somit der auf die Endradsätze der Drehgestelle entfallende Anteil erhöht. Dies kann insbesondere bei schnellen Bogenfahrten zu unzulässig hohen Gleisverschiebungskräften führen.Such constructions have the disadvantage that when traveling with excess centrifugal force, the middle wheel set does not participate in the transmission of the centrifugal forces of the vehicle body and the bogie frame to the track, and thus the proportion attributable to the end wheel sets of the bogies increases. This can lead to impermissibly high track displacement forces, especially when traveling quickly through bends.
Aufgabe der Erfindung ist es, ein Laufwerk der gattungsgemäßen Art zu schaffen, das die Bogenlauffähigkeit verbessert und auch bei größeren Überhöhungsfehlbeträgen die Gleisbelastung minimiert.The object of the invention is to provide a drive of the generic type which improves the sheet running ability and minimizes the track load even with large cant deficiency amounts.
Die Lösung dieser Aufgabe erfolgt erfindungsgemäß dadurch, daß an jeder Seite des mittleren Radsatzes zwischen Drehgestellrahmen und Radsatz ein in Querrichtung wirkendes kraftgeregeltes Stellglied angeordnet ist, das zur Verstellung des mittleren Radsatzes bei Kurvenfahrt an eine Bogenaußenseite über die Steuereinrichtung in Abhängigkeit eines Meßelementes zur Erfassung des Ausdrehwinkels des Drehgestellrahmens einstellbar ist.This object is achieved according to the invention in that a transversely acting force-controlled actuator is arranged on each side of the middle wheel set between the bogie frame and the wheel set, which is used to adjust the middle wheel set when cornering on an outside of the bow via the control device as a function of a measuring element for detecting the turning angle the bogie frame is adjustable.
Durch diese Ausbildung ist es möglich, den mittleren Radsatz in eine für die jeweilige Bogenfahrt bezüglich der Gleisbelastung und der Kraftaufteilung zwischen den einzelnen Radsätzen optimale Stellung zu verschieben. Befährt ein derart ausgerüstetes Schienenfahrzeug einen Bogen, so erfolgt die Betätigung der Stellglieder in Richtung der Bogenaußenseite, so daß der Mittelradsatz von der Schiene an der Bogeninnenseite wegbewegt wird.This design makes it possible to shift the middle wheel set into an optimal position for the respective curve travel with regard to the track load and the force distribution between the individual wheel sets. If a rail vehicle equipped in this way travels a curve, the actuators are actuated in the direction of the outside of the curve, so that the center wheel set is moved away from the rail on the inside of the curve.
Bei einem höheren Fliehkraftüberschuß kann die in den Stellgliedern wirkende Kraft und der entsprechende Weg in den durch den möglichen Relativweg zwischen dem Radsatz und dem Drehgestellrahmen gegebenen Grenzen angepaßt werden.With a higher excess of centrifugal force, the force acting in the actuators and the corresponding path can be adapted within the limits given by the possible relative path between the wheel set and the bogie frame.
Eine vorteilhafte Ausgestaltung wird dadurch geschaffen, daß als Meßelement zwischen Fahrzeugrahmen und Drehgestellrahmen ein Sensor angeordnet ist und die Stellglieder entsprechend dem von dem Sensor ermittelten Ausdrehwinkel einstellbar sind.An advantageous embodiment is created in that a sensor is arranged as a measuring element between the vehicle frame and the bogie frame and the actuators are adjustable in accordance with the turning angle determined by the sensor.
Weiterhin wird vorgeschlagen, daß die Stellglieder zusätzlich durch eine eingestellte Vorspannung zur Querführung des Radsatzes ausgebildet sind.Furthermore, it is proposed that the actuators are additionally formed by a set preload for transverse guidance of the wheel set.
Es ist ferner vorgesehen, daß an jedem Drehgestellrahmen ein Sensor angeordnet ist und die Stellglieder gemeinsam entsprechend dem Mittelwert der beiden Ausdrehwinkel über die Steuervorrichtung einstellbar sind. Der besondere Vorteil dieser Ausbildung liegt darin, daß aus dem mittleren Ausdrehwinkel sehr genau der durchfahrene Bogenradius bestimmt werden kann.It is further provided that a sensor is arranged on each bogie frame and the actuators can be adjusted jointly via the control device in accordance with the mean value of the two unscrewing angles. The particular advantage of this design is that the arc radius traveled can be determined very precisely from the mean turning angle.
Eine einfache Ausbildung besteht darin, daß die Stellglieder als Luftbalgzylinder ausgebildet sind.A simple design is that the actuators are designed as air bellows cylinders.
In den Zeichnungen sind Ausführungsbeispiele der Erfindung schematisch dargestellt. Es zeigen:
- Fig. 1
- einen Drehgestellrahmen mit drei Radsätzen und einer Querfesselung des mittleren Radsatzes mit zugeordneten Stellgliedern,
- Fig. 2
- eine Zuordnung eines Sensors zwischen Fahrzeugrahmen und Drehgestellrahmen,
- Fig. 3
- eine weitere Ausführung eines dreiachsigen Laufwerks mit Stellgliedern zur gleichzeitigen Querführung eines Mittelradsatzes und
- Fig. 4
- eine Anordnung von Sensoren an zwei Drehgestellen und die Aufbereitung der Meßsignale.
- Fig. 1
- a bogie frame with three wheel sets and a transverse attachment of the middle wheel set with assigned actuators,
- Fig. 2
- an assignment of a sensor between the vehicle frame and the bogie frame,
- Fig. 3
- a further version of a three-axis drive with actuators for simultaneous transverse guidance of a center wheel set and
- Fig. 4
- an arrangement of sensors on two bogies and the processing of the measurement signals.
Bei der dargestellten Ausführung gemäß Figur 1 sind die Endradsätze 2 und der Mittelradsatz 3 über Längsführungen 6 und Querführungen 5, die am Radsatzlager 4 angreifen, an den Drehgestellrahmen 1 gekoppelt. Vertikale Kopplungselemente sowie Zusatzausrüstungen (Bremse, Motor, etc.) sind der Übersichtlichkeit wegen nicht näher dargestellt.In the illustrated embodiment according to FIG. 1, the
Am mittleren Radsatz 3 sind den Querführungen 5 an beiden Seiten zusätzlich Stellglieder 7 parallel geschaltet. In der vorliegenden Ausführung wurden Luftbalgzylinder als Stellglieder 7 gewählt, die bei der Fahrt in der Geraden drucklos geschaltet sind. Während der Bogenfahrt wird der innenliegende Luftbalgzylinder 7 des Radsatzes 3 mit Druckluft beaufschlagt und sorgt dadurch für die erforderliche Kraft bzw. die Wegänderung des Mittelradsatzes 3 nach außen.On the middle wheel set 3, the
Selbstverständlich können anstelle des Luftbalgzylinders 7 auch andere Stellglieder, wie Druckluftzylinder und Hydraulikzylinder eingesetzt werden.Of course, other actuators, such as compressed air cylinders and hydraulic cylinders, can also be used instead of the
Gemäß Fig. 2 ist eine Steuereinrichtung zur Ansteuerung der Luftbalgzylinder 7 durch einen Sensor 8 dargestellt. Der Ausdrehwinkel zwischen Drehgestellrahmen 1 und einem angedeuteten Fahrzeugrahmen 9 wird aus einer Abstandsmessung zwischen dem Sensor 8 und einer am Fahrzeugrahmen 9 angebrachten Meßfläche 12 unter Berücksichtigung des Hebelarmes zum Drehzentrum 13 bestimmt.2, a control device for controlling the
Die Winkelmessung erfolgt sinnvollerweise in Längsrichtung, da die Verschiebbarkeit zwischen Drehgestellrahmen 1 und Fahrzeugrahmen 9 in Längsrichtung im allgemeinen kleiner ist als in der lateralen Richtung.The angle measurement is expediently carried out in the longitudinal direction, since the displaceability between
Eine weitere Ausführungsform in der Stellglieder 7' am mittleren Radsatz 3 gleichzeitig in Querrichtung federnde Eigenschaften haben, und in der Lage sind, den Radsatz 3 zu führen, ist in der Fig. 3 dargestellt.Another embodiment in which the actuators 7 'on the
Bei einer Verwendung von Luftbalgzylindern 7' läßt sich dies erreichen, in dem die Zylinder im Grundzustand bereits mit Druckluft beaufschlagt werden und eine nötige Verspannung sicherstellen. Durch das Absenken des Druckes auf der einen Seite bzw. die Erhöhung auf der anderen, wird im Bogen die erforderliche Kraftwirkung für die erforderliche Verstellung erzielt.When using air bellows cylinders 7 ', this can be achieved by already applying compressed air to the cylinders in the basic state and ensuring the necessary bracing. By lowering the pressure on one side or increasing it on the other, the force required for the required adjustment is achieved in the bow.
Gemäß Fig. 4 ist eine Anordnung von zwei Sensoren 8 und 8' hintereinander angeordneter Drehgestellrahmen 1, 1' dargestellt, wobei eine logische Verknüpfung der gebildeten Meßsignale anhand des im Spurkanals stehenden Schienenfahrzeuges zu entnehmen ist.4 shows an arrangement of two
Der Sensor 8 am vorlaufenden Drehgestell 1 sowie der Sensor 8'am nachlaufenden Drehgestell 1'berechnen jeweils den Ausdrehwinkel α bzw. α' bezüglich des Fahrzeugrahmens 9.The
Wegen der Schrägstellung innerhalb des Spurkanals 2 δ s und innerhalb der Querfederung 2δQ weichen die beiden Winkel α und α' von dem Winkel α φ ab, der sich für radial stehende Drehgestelle ergibt:
mit:
- lg:
- Drehgestellabstand
- Rm:
- mittlerer Bogenhalbmesser
und der Ausdrehwinkel des nachlaufenden etwas größer
Weil Δ α und Δ α' etwa gleich groß sind, läßt sich aus der Summe resp. dem Mittelwert der beiden Winkel vorzüglich ein sehr genaues Maß für den durchfahrenden Bogenradius ableiten:
Die Verschaltung der Sensorausgangssignale ist ebenfalls in Fig. 4 dargestellt.Because of the inclination within the
With:
- lg:
- Bogie distance
- Rm:
- medium arc radius
and the turning angle of the trailing slightly larger
Because Δ α and Δ α 'are approximately the same size, the sum of. derive a very precise measure of the arc radius passing through from the mean of the two angles:
The interconnection of the sensor output signals is also shown in FIG. 4.
Durch Summation bzw. Mittelwertbildung 10 werden die beiden Meßsignale zu einer Größe
Claims (5)
- Running mechanism for rail vehicles having at least six wheel sets, wherein three wheel sets, in each case, are connected to a bogie frame by means of coupling and guiding elements, particularly for longitudinal and transverse guidance, and the bogie frames have, in each case, the ability to twist in relation to a vehicle frame, characterized in that there is disposed, on each side of the middle wheel set (3), between the bogie frame (1) and the wheel set (3), a force-regulated adjusting member (7) which acts in the transverse direction and can be adjusted, for the purpose of displacing the middle wheel set (3), when the vehicle is travelling round curves, to the outer side of the bend by means of a control arrangement in dependence upon a measuring element (8) for detecting the turn-out angle of the bogie frame (1).
- Running mechanism according to Claim 1, characterized in that a sensor (8) is disposed, as a measuring element, between the vehicle frame (9) and the bogie frame (1) and the adjusting members (7) can be adjusted according to the turn-out angle detected by the sensor (8).
- Running mechanism according to Claim 1 or 2, characterized in that the adjusting members (7) are additionally formed by an adjusted prestressing system for the transverse guidance of the wheel set (3).
- Running mechanism according to one of Claims 1 to 3, characterized in that a sensor (8, 8') is disposed on each bogie frame (1, 1') and the adjusting members (7, 7') can be jointly adjusted, according to the mean value of the two turn-out angles, by means of the control device.
- Running mechanism according to one of Claims 1 to 4, characterized in that the adjusting members are constructed as air bellows cylinders (7).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4221117A DE4221117A1 (en) | 1992-06-26 | 1992-06-26 | Running gear for rail vehicles |
| DE4221117 | 1992-06-26 | ||
| US08/179,929 US5488910A (en) | 1992-06-26 | 1994-01-11 | Undercarriage for railway car |
| CA002114400A CA2114400C (en) | 1992-06-26 | 1994-01-27 | Undercarriage for railway car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0575696A1 EP0575696A1 (en) | 1993-12-29 |
| EP0575696B1 true EP0575696B1 (en) | 1995-06-21 |
Family
ID=27169691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93103628A Expired - Lifetime EP0575696B1 (en) | 1992-06-26 | 1993-03-06 | Running gear for railway vehicles |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5488910A (en) |
| EP (1) | EP0575696B1 (en) |
| AT (1) | ATE124006T1 (en) |
| CA (1) | CA2114400C (en) |
| DE (2) | DE4221117A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4413805A1 (en) * | 1994-04-20 | 1995-10-26 | Abb Patent Gmbh | Self-steering three-axle drive for a rail vehicle |
| CH690032A5 (en) * | 1994-07-13 | 2000-03-31 | Vevey Technologies Sa | A method of setting the orientation of the steerable wheels in rolling devices of a rolling assembly rail and rolling assembly using this method. |
| ES2232525T3 (en) * | 2000-01-14 | 2005-06-01 | Siemens Ag | ROTATING FRAME OF RAILWAY VEHICLE WITH ACTIVE MANAGEMENT DEVICE. |
| DE102004045529B3 (en) * | 2004-09-20 | 2006-02-16 | Siemens Ag | Bogie rail vehicle travel direction determination procedure for bogie rotation damper control measures rotation angles of both bogies relative to frame |
| AT505488A2 (en) * | 2007-06-19 | 2009-01-15 | Siemens Transportation Systems | METHOD FOR MINIMIZING TIRE LEAKAGE DAMAGE AND PROFILE WEAR OF WHEELS OF A RAIL VEHICLE |
| DE102007054861A1 (en) * | 2007-11-16 | 2009-05-28 | Siemens Ag | Method for limiting the angle between the longitudinal axes of interconnected car bodies |
| US8560151B2 (en) * | 2010-05-11 | 2013-10-15 | Cartasite, Inc. | Dynamic monitoring of mobile railway car undercarriage |
| USD756207S1 (en) | 2014-04-15 | 2016-05-17 | General Electric Company | Center pivot |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR743303A (en) * | 1933-03-27 | |||
| DE1156835B (en) * | 1958-06-14 | 1963-11-07 | Linke Hofmann Busch | Axle control for two-axle vehicles, especially rail vehicles |
| GB1571499A (en) * | 1967-02-03 | 1980-07-16 | British Railways Board | Railway vehicles and bogies |
| DE2259035B2 (en) * | 1972-11-29 | 1979-09-20 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Arrangement for track guidance of wheelsets |
| FR2530567A1 (en) * | 1982-07-26 | 1984-01-27 | Anf Ind | BOGIE WITH AXLES ORIENTABLE FOR RAILWAY VEHICLES |
| FR2573023B1 (en) * | 1984-11-09 | 1988-04-08 | Schneider Jeumont Rail | TRANSVERSE AXLE BOGIE |
| US4679507A (en) * | 1985-12-02 | 1987-07-14 | General Motors Corporation | Three-axle railway truck steering linkage |
| JP2738114B2 (en) * | 1990-03-06 | 1998-04-08 | 住友金属工業株式会社 | Two-axle bogies for railway vehicles |
| DE4140126C2 (en) * | 1991-12-05 | 2001-10-04 | Daimlerchrysler Rail Systems | Running gear for rail vehicles |
-
1992
- 1992-06-26 DE DE4221117A patent/DE4221117A1/en not_active Withdrawn
-
1993
- 1993-03-06 AT AT93103628T patent/ATE124006T1/en not_active IP Right Cessation
- 1993-03-06 EP EP93103628A patent/EP0575696B1/en not_active Expired - Lifetime
- 1993-03-06 DE DE59300280T patent/DE59300280D1/en not_active Expired - Fee Related
-
1994
- 1994-01-11 US US08/179,929 patent/US5488910A/en not_active Expired - Fee Related
- 1994-01-27 CA CA002114400A patent/CA2114400C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2114400A1 (en) | 1995-07-28 |
| ATE124006T1 (en) | 1995-07-15 |
| EP0575696A1 (en) | 1993-12-29 |
| DE4221117A1 (en) | 1994-01-05 |
| DE59300280D1 (en) | 1995-07-27 |
| CA2114400C (en) | 1999-10-19 |
| US5488910A (en) | 1996-02-06 |
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