EP0501204B1 - Bogie for rail vehicles - Google Patents

Abstract

Bogie for rail vehicles, in particular power bogie, having a bogie frame composed of longitudinal and transverse members, having two or more wheel sets (1, 2), the wheel sets (1, 2) being connected to the bogie frame via a primary suspension or a coupling and a primary suspension, and a vehicle body being connected to the bogie frame via a secondary suspension or via a central pin or the like and a secondary suspension, in addition a rigid connecting rod (8, 19, 20, 23) being arranged between at least one of the wheel sets (1, 2), or at least one drive unit (3, 4, 27, 32), connected to a wheel set (1, 2), and/or brake unit and the vehicle body. <IMAGE>

Description

The invention relates to a bogie for rail vehicles according to the features of the preamble of claim 1.

For such bogies, it is desirable that the wheel sets, depending on the longitudinal stiffness of the primary wheel set linkage or suspension, can adjust freely in the track curve.

A large number of solutions are known for such bogies with radially adjustable wheel sets. The majority of these solutions use more or less rigidly articulated coupling mechanisms, which can be arranged between the wheel sets or between them and the vehicle body (DE 31 19 164 C2; WO 90/02068; DE 32 32 289 A1). The mechanical coupling of a wheel set to a drive unit is also known which, owing to the arrangement of the coupling elements, allows the wheel set to be pivoted about an ideal or real pivot point located before or after it in the direction of travel. Furthermore, the indirect mutual support of axle drives in connection with wheel set coupling elements is known (EP 0 072 535 A1).

Because of their versatility, these known solutions are complex to assemble and maintain and require close tolerances to be observed.

Some solutions allow the wheel sets to be largely freely adjusted due to the very low longitudinal stiffness in the primary linkage. However, since this also Transmits traction forces when starting or braking, the forces setting the wheelset are superimposed or compensated. The resulting parallel displacement of the wheel set must be limited due to the installation geometry of the drive and brake, which also results in the limitation of the mutually opposite longitudinal paths of the primary linkage required for setting the wheel set.

If wheel sets are driven by traction motors or transfer gears suspended in the vehicle body via cardan shaft and axle gear, a turning movement of the bogie requires a change in length of the cardan shaft arranged between the car body and bogie (EP 0 072 535).

If a drive torque is transmitted when the bend is running in or out, pull-out forces are required to change the length, which can increase the turning resistance of the bogie by a multiple and, especially with high drive power, hinder or make impossible the free setting of the bogie in the bend.

The invention is therefore based on the object to provide a bogie and in particular a motor bogie in which the traction forces are transmitted in such a way that the setting of the wheelsets is determined only by the forces of the wheel-rail geometry and the bogie frame only functions "Wear" and "Lead" remain. The object of the invention is further to provide such a bogie which is simple to assemble and maintain and does not place the highest demands on the tolerances to be observed.

This object is achieved by the features mentioned in the characterizing part of the main claim. Special Embodiments and developments of the invention are included in the further claims.

According to the invention, a rigid handlebar is arranged between at least one of the wheel sets, or at least one drive unit and / or brake unit connected to the wheel set, and the vehicle body. Advantageously, the handlebar is articulated in wear-free, cardanic elastomer elements, so that the longitudinal forces can be transmitted without constraint.

The drive-side articulation must take place in or as close as possible to the inertia pole of the wheelset or the drive unit, or in its vertical axis of the moment of inertia, in order to avoid the occurrence of parasitic moments when traction forces act on bends, which would result in incorrect setting of the wheelset. If the handlebar attacks at an external point, a parasitic moment arises when the bogie is turned out and traction forces occur at the same time, which leads to a misalignment of the wheel set in the track.

In the case of wheelsets, the linkage to the wheelset can take place via a centrally arranged bearing or via a fork-shaped drawbar articulated on the wheelset bearings. In the case of driven wheel sets, the handlebar can be articulated near the center of gravity of a drive unit which is connected elastically or rigidly to the wheel set.

The wheel sets can be articulated individually or in the form that both wheel sets are coupled to one another within the bogie and there is only one common articulation via the handlebar to the vehicle body.

The coupling of e.g. two wheelsets can be done so that the setting behavior of the individual wheelsets is not affected or a targeted radial setting of both wheelsets, e.g. can be reached via a common central link point.

The articulation according to the invention enables the neutralization of the traction torques which arise when starting or braking, in particular when using Tatz bearing motors or drives supported on both sides in the wheel or on the wheelset shaft. In order not to hinder the turning movements of the wheel sets with the rigidly or transversely elastically mounted drive or braking units, the latter are advantageously suspended on the bogie main cross member via pendulums.

A sufficiently soft design of the lateral characteristics of the common central articulation point, as well as the primary wheelset articulation, allows the wheelsets to avoid lateral disturbances individually without transferring them to a significant extent between the two wheelsets.

If the arrangement of a single central articulation point in conjunction with the longitudinal stiffness of the articulation on the wheelset bearing is not sufficient to achieve a higher speed with stable running, this can be replaced by coupling points or elements that can be moved outwards in pairs. A further increase in the limit speed can be achieved by combining the articulation according to the invention with a coupling frame that connects all wheelset bearings with defined elasticities, which then enables the use of fully sprung hollow shaft drives.

In vehicles with a drive via a cardan shaft on an axle drive, the linkage is arranged parallel to the cardan shaft, the handlebar being of the same length as the cardan shaft between the center of the joint bearing. A change in length when turning the bogie no longer occurs. The torque arm required on the axle drive is expediently integrated into a fork-shaped handlebar; the handlebar connecting two adjacent axle drives is designed analogously.

Fig. 1)

eine schematische Darstellung eines Drehgestells, bei dem die Lenkerstange an einem von zwei Radsätzen angeordnet ist;

Fig. 2)

eine schematische Darstellung eines Drehgestells, bei dem die Lenkerstange an einem, alle Radsatzlager verbindenden Koppelrahmen angeordnet ist;

Fig. 3)

eine schematische Darstellung einer weiteren Ausführung eins Drehgestells, bei dem die Lenkerstange an einem von zwei Radsätzen angeordnet ist;

Fig. 4)

eine schematische Darstellung eines Drehgestells, bei dem an jedem von zwei Radsätzen eine Lenkerstange angeordnet ist;

Fig. 5)

eine schematische Darstellung eines Drehgestells, bei dem die Lenkerstange zwischen einer Konsole und einem mit dem Zentralzapfen verbundenen Mitnehmer angeordnet ist;

Fig. 6)

eine schematische Darstellung eines Drehgestells mit Koppelrahmen, bei dem die Lenkerstange zwischen dem Koppelrahmen und einem mit dem Zentralzapfen verbundenen Mitnehmer angeordnet ist;

Fig. 7)

eine schematische Darstellung einer weiteren Ausführung eines Drehgestells, bei dem die Lenkerstange zwischen einer Konsole und einem mit dem Zentralzapfen verbundenen Mitnehmer angeordnet ist;

Fig. 8)

eine schematische Darstellung eines Drehgestells mit Antrieb über Gelenkwelle und die Anordnung der Lenkerstange an einem Radsatz;

Fig. 9)

eine schematische Darstellung eines Drehgestells mit Antrieb über Gelenkwellen auf beide Radsätze und die Anordnung der Lenkerstange an einem Radsatz;

Fig. 10)

eine Draufsicht auf die Ausführung eines Drehgestells nach Fig. 3;

Fig. 11)

eine Seitenansicht des Drehgestells nach Fig. 10.

The invention is described in more detail below with the aid of a few drawings. Show:

Fig. 1)

is a schematic representation of a bogie, in which the handlebar is arranged on one of two sets of wheels;

Fig. 2)

is a schematic representation of a bogie, in which the handlebar is arranged on a coupling frame connecting all wheelset bearings;

Fig. 3)

is a schematic representation of another embodiment of a bogie, in which the handlebar is arranged on one of two sets of wheels;

Fig. 4)

is a schematic representation of a bogie in which a handlebar is arranged on each of two sets of wheels;

Fig. 5)

is a schematic representation of a bogie, in which the handlebar is arranged between a bracket and a driver connected to the central pin;

Fig. 6)

is a schematic representation of a bogie with coupling frame, in which the handlebar is arranged between the coupling frame and a driver connected to the central pin;

Fig. 7)

is a schematic representation of another embodiment of a bogie, in which the handlebar is arranged between a bracket and a driver connected to the central pin;

Fig. 8)

is a schematic representation of a bogie with drive via propeller shaft and the arrangement of the handlebar on a wheel set;

Fig. 9)

a schematic representation of a bogie with drive via cardan shafts on both wheel sets and the arrangement of the handlebar on a wheel set;

Fig. 10)

a plan view of the execution of a bogie according to Fig. 3;

Fig. 11)

10 shows a side view of the bogie according to FIG. 10.

An inventive bogie according to FIG. 1) consists of two wheel sets 1, 2 with drive units 3, 4 connected to them, which are connected to one another via inwardly directed brackets 5, 6 and a rigid connecting rod 7 for transmitting the traction forces. The handlebar 8 is arranged between the drive unit 3 and the vehicle body (not shown). For stabilization, the drive units 3, 4 are suspended on the bogie frame (not shown) via pendulums 9, 10, 11, 12 articulated on the brackets 5, 6. All articulations are gimbal. This one Drive units shown schematically can also be brake units or combinations of both.

Fig. 2) shows a bogie with coupling frame 13 which connects the wheelset bearings of the two wheelsets 1, 2. The drive units 3, 4 have, in addition to inwardly facing brackets 5, 6, also outwardly facing brackets 17, 18 and, in addition to the pendulums 9, 10, 11, 12 articulated on the inner consoles 5, 6, are also on the outer brackets hinged pendulums 15, 16 connected to the bogie frame (not shown). The coupling frame 13 has, in the area in which the connections to the individual wheelset bearings converge, an upwardly directed link rod 14, to which the handlebar rod 8, which is connected at its other end to the vehicle body (not shown), is articulated.

3) shows two wheel sets 1, 2 with drive units 3, 4 and inwardly facing brackets 5, 6. Here the brackets 5, 6 are articulated to one another on the inside, so that no connecting rod is required to transmit the traction forces. In this embodiment, only two pendulums 9, 11 are provided between the brackets 5, 6 and the bogie frame (not shown). The handlebar 8 is arranged between the drive unit 3 of the wheel set 1 and the vehicle body (not shown).

An embodiment with two separate articulations is shown in Fig. 4). The two wheel sets 1, 2 with drive units 3, 4 and inwardly facing brackets 5, 6, and pendulums 9, 10, 11, 12 between these brackets 5, 6 and the bogie frame (not shown) are not connected to one another. Since transmission of the traction forces between the wheel sets 1, 2 is not possible here, a handlebar 8, 19 is arranged on each of the two drive units and with the Vehicle body (not shown) connected. In bogies, in which only one wheel set is provided with a drive or brake unit, the connection between the two wheel sets and the handlebar on the non-driven or braked wheel set would be omitted, as here.

Fig. 5) shows another arrangement of the handlebar according to the invention. The two wheel sets 1, 2 are each provided with drive units 3, 4 and have inwardly directed brackets 5, 6, on which, as already described, pendulums 9, 10, 11, 12 are articulated and connected to the bogie frame (not shown) are. The two brackets 5, 6 are connected to one another via a connecting rod 7. The handlebar 20 is articulated on one side to the console 5 of the wheel set 1 and on the other side to a driver 21 which is connected to the central pin 22 of the vehicle body.

Another embodiment of a bogie is shown in Fig. 6). Here the bogie is provided with a coupling frame 13 and provided with brackets 5, 6, 17, 18 and pendulums 9, 10, 11, 12, as described above for FIG. 2). The handlebar 20 is articulated in the area of the coupling frame 13 in which the connections to the individual wheelset bearings converge. On its other side, the handlebar 20 is articulated to a driver 21 which is connected to the central pin 22 of the vehicle body.

Fig. 7) again shows a bogie with two wheel sets 1, 2 with drive units 3, 4, which are connected by their inwardly facing brackets 5, 6. The handlebar 20 is articulated here on a bracket 5 and with its other side on the driver 21 of a central pin 22 of the vehicle body. The suspension of the drive units 3, 4 takes place here via a single pendulum 9, which is between one upwards directed extension 23 of the handlebar 20 and the bogie frame (not shown) is arranged.

Fig. 8) shows a bogie from two wheel sets 1, 2, the one wheel set 1 being driven by means of an articulated shaft 24 and an axle drive 27. The handlebar 23 is articulated on the driven wheel set 1 and extends approximately parallel to the propeller shaft 24. The axle drive 27 is surrounded by a fork-shaped extension 28 of the handlebar 23 above and below in the manner of a drawbar, the handlebar 23 being articulated on the axle drive 27 at the top and bottom and in this way integrated the torque support for the axle drive 27. At its other end, the handlebar 23 is hinged to the vehicle body (not shown).

Fig. 9) shows a bogie, like Fig. 8), with the difference that the second wheel set 2 is driven by a further drive shaft 26, which is arranged between the axle drive 27 of the one wheel set 1 and an axle drive 30 of the second wheel set becomes. The handlebar 23 is connected to the axle gear 27 of the first wheel set 1 as described in Fig. 8). Between the axle drive 27 of the first wheel set 1 and the axle drive 30 of the second wheel set 2, a connecting rod 25 for transmitting the traction forces is arranged, this connecting rod 25 also comprising the second axle drive 30 with a fork-shaped extension 29, as in the handlebar 23 in FIG. 8) already executed.

10) and 11) show the design of a bogie according to the schematic representation according to FIG. 3), only one pendulum 9 being provided here. The bogie has two wheel sets 1, 2 with wheels 33, the wheel sets being connected to the bogie frame 37 via wheel set bearings 42 and primary springs 38. Between the bogie frame 37 and the vehicle body (not secondary springs 39 are further arranged. Both wheel sets 1, 2 have drive units, namely Tatzlagermotoren 32 and brake units 31. The Tatzlagermotoren 32 have on their housings in the center of the bogie consoles 5, 6, which are connected via a cardan linkage 34. The second bracket 6 of the second Tatzlagermotor 4 is provided with a gimbal 35 in which a pendulum 9 is articulated. The pendulum 9 is articulated at the other end via a gimbal 36 on the bogie frame 37. Finally, the handlebar 8 is articulated with its one side to the Tatzlagermotor 32 of the one wheel set 1 via a cardan joint 40 and with its other side via a cardan joint 43 to the vehicle body. Traction forces that occur are thus transmitted directly from the wheel sets to the vehicle body via the brackets 5, 6 connecting them or the handlebar 8. This enables the wheel sets to be set only by the forces of the wheel-rail geometry, and the bogie frame only has the "carry" and "guide" functions.

Claims (7)

1. A bogie for rail vehicles, particularly a driven bogies, with a bogie frame consisting of longitudinal and transversal beams, with two or more wheel assemblies, in which the wheel assemblies are connected to the bogie frame via a primary suspension or a coupling and a primary suspension, and in which the bogie frame is connected to a vehicle body via a secondary suspension or via a central pin or the like and a secondary suspension, and in which a rigid control bar (8, 19, 20, 23) is located between at least one of the wheel assemblies (1, 2), or at least one drive unit (3, 4, 27, 32) and/or brake unit connected to a wheel assembly (1, 2) and the vehicle body, characterised in that the control bar (8, 19, 20, 23) is pivotally coupled to the wheel assembly (1, 2), to the drive unit (3, 4, 27, 32) or the brake unit respectively by means of a resilient flexible bearing (40, 43) either at or as near as possible to the point of inertia of a wheel assembly (1, 2), and to the vehicle body, and in that the control bar (8, 19, 20, 23) of the wheel assembly (1, 2), or of the drive unit (3, 4, 27, 32) or the brake unit respectively is positioned in relation to the bogie towards the outside and preferably in the direction of the next adjacent vehicle coupling.
2. A bogie according to claim 1, characterised in that the wheel assemblies (1, 2) or the drive units (3, 4, 27, 32) connected to them include supports (5, 6) facing horizontally into the centre of the bogie and/or pointing from the bogie along the direction of travel and/or one or several connecting bars (7, 13, 25).
3. A bogie according to claim 1, characterised in that at least one pivot (9, 10, 11, 12, 15, 16) is located between the supports (5, 6) or connecting bars (7, 13, 25) and the bogie frame (37) or vehicle body.
4. A bogie according to claim 1, characterised in that the supports (5, 6) or connecting bars (7, 13, 25) of two or more wheel assemblies (1, 2) or, as the case may be, drive units (3, 4, 27, 32) connected to the latter, are connected to one another.
5. A bogie according to claim 2, characterised in that the supports (5, 6) or connecting bars (7, 13, 25) are connected by cardan joints (34).
6. A bogie according to claim 1, characterised in that the control bar (20) is located between a wheel assembly (1, 2) or, as the case may be, a drive unit (3, 4) connected to the latter and the vehicle body's central pin (22) positioned above the bogie.
7. A bogie according to claim 4, characterised in that the control bar (8) is located between, on the one hand, a pivot (9) which is connected to a wheel assembly (1, 2) via a support (5, 6) or connecting bar (7, 13) or via a drive unit (3, 4) connected to said wheel assembly and to the vehicle body, and, on the other hand, a follower (21) which is connected to the vehicle body's central pin (22) positioned above the bogie.

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