EP2697108B1 - Torque support and bogie for a rail vehicle - Google Patents

Description

The invention relates to a bogie, in particular for a rail vehicle provided with a drive, for example for a locomotive.

Such a bogie is eg from the WO 2009/007049 A1 . EP 1 804 363 A1 , or DE 1 155 464 B known.

Such a bogie has a bogie frame. The frame carries one or more wheelsets. Each wheelset includes wheels, a final drive with a wheelset and a gearbox housing. At least one of the wheelsets is in a drive connection with a drive motor of the rail vehicle. In this drive connection a transmission is usually arranged.

So usually come in metro rail vehicles, ie in rail transport with maximum operating speeds of 80 to 110 km / h, single-stage helical gear for transmitting the drive power from the drive motor to the wheels used. The invention is particularly suitable for such rail vehicles. Due to different maximum operating speeds, which are generally between 80 km / h and 110 km / h, and various engine concepts, the transmission ratios usually vary conventionally between 6.3 and 7.7. This leads to the necessity that, depending on the translation desired by the operator, which is selected according to the intended maximum operating speed, a transmission has to be selected from a multiplicity of stored or offered transmissions of various sizes and installed in the rail vehicle. The manufacturers of such rail vehicle transmissions therefore usually offer different transmissions of different sizes, in which the use of identical parts for the various transmission sizes is extremely limited.

Since such transmissions must be supported against the drive torque of the drive motor with regard to their installation position, in particular in the bogie of the rail vehicle, torque supports are provided. These allow an articulated support of the gearbox on the bogie. Depending on the size of the gearbox used and the bogie and the mounting position, different distances must be bridged by the torque arms. Thus, a variety of different torque supports of different lengths and designs must be stocked. When originally made torque supports a separate tool is required for each embodiment. All this increases the manufacturing and storage costs for both new gearboxes as well as for the torque arms and replacement parts. This is disadvantageous if, as a result of guarantee commitments, the products of the various components have to be kept in stock for a possibly necessary replacement over the years. The increased variety is particularly disadvantageous in innovations, since each individual version must be adapted according to the new technology. This in turn leads to increased development costs.

The present invention has for its object to provide a torque arm and a bogie for a rail vehicle, which avoids the disadvantages of the prior art. In particular, a torque arm is to be specified, which can be easily adapted to different connections of the wheelset to the bogie and allows different lengths and angles mounting positions. At the same time, the variety of components and the development and production costs are to be reduced.

The object of the invention is achieved by a bogie for a rail vehicle according to the independent claim. In the dependent claims particularly advantageous and expedient embodiments of the invention are given.

An inventive bogie for a rail vehicle comprises a bogie frame with at least one wheelset, comprising two wheels, a final drive, a wheelset and a Radsatzgetriebegehäuse. Furthermore, a torque arm for articulated mutual support of the wheelset is provided on the bogie or bogie frame. The torque arm comprises a rod, at both ends of which a receiving head is arranged. In this case, the receiving head on a bearing for receiving a bolt, which serves to support the respective element.

The rod is inventively designed at least in the region of its two ends as a sleeve. In this case, the bearing has a bush, which is arranged in the radial direction of the bolt between the bolt and the receiving head and is supported on at least one further bearing element on the receiving head. The sleeve has in this case on its outer circumference on a belly-shaped portion in the manner of a spherical cap.

By means of the invention, different installation situations of the transmission can be realized relative to the bogie. Thus, adjustments to the desired installation situation by adjusting the length of the rod can be done by this is cut to length according to the embodiment and then provided with the receiving heads, which are connected for example by friction welding to the rod. Thus, the same recording heads can always be used for different embodiments, without the need for each torque arm as in the prior art own original form is needed. As a result, the variety of components of the torque arms and the development costs, manufacturing costs and storage costs are significantly reduced. The same applies to associated wheelset, which are generally seen downstream of the transmission in the power transmission direction from the drive motor to the wheels.

The invention will now be explained by way of example with reference to embodiments and the accompanying figures.

Figur 1

ein Drehgestell mit drei Radsätzen in einer perspektivischen Darstellung.

Figur 2

eine Drehmomentenstütze in einer Draufsicht und einem Axialschnitt durch dessen Längsachse gemäß dem Stand der Technik.

Figur 3

eine erfindungsgemäße Drehmomentenstütze ebenfalls in einer Draufsicht sowie einem Querschnitt durch die Längsachse.

Show it:

FIG. 1

a bogie with three wheelsets in a perspective view.

FIG. 2

a torque arm in a plan view and an axial section through its longitudinal axis according to the prior art.

FIG. 3

an inventive torque arm also in a plan view and a cross section through the longitudinal axis.

This in FIG. 1 shown bogie is intended for a locomotive. It consists of three sets of wheels 2, 3, 4. Each wheel set 2, 3, 4 comprises two wheels 2.1, 2.2, 3.1, 3.2 and 4.1, 4.2, also axles 2.3, 3.3 and 4.3, a final drive 2.4, 3.4, 4.4 and each one Radsatzgetriebegehäuse 8.1, 8.2, 8.3. It also recognizes four springs 5. These are connected between the bogie and the locomotive frame, not shown, also springs 6, which are connected between a bogie frame 15 and the respective wheelset shaft 2.3, 3.3 and 4.3.

The illustrated components are received by the bogie frame 15. In the present case, the wheel set transmission 2.4, 3.4, 4.4 are each articulated with a torque support 1 on the bogie frame 15. The torque arm 1 serves to receive the drive motor, not shown, via a likewise not shown gear of the rail vehicle to the final drives 2.4, 3.4, 4.4 transmitted drive torque. Of course, the transmission via the torque supports according to the invention, for example, on the bogie frame 15 could be supported articulated.

In FIG. 2 is such a torque arm 1, as has become known in the art, shown. This is produced by prototyping, for example casting or forging, and comprises a fork-key-shaped rod 10 which integrally forms at its two ends 10.1 a receiving head 12.1, 12.2, in which a bearing 13.1, 13.2 is provided for receiving a respective bolt 14.1, 14.2 , The bolts 14.1, 14.2 are barrel-shaped, in order to transmit an optimal recording of transverse and bending moments from the transmission to the bogie. However, the barrel shape requires higher manufacturing costs due to the manufacturing tolerances.

A disadvantage of these torque arms, however, is that for different connection lengths, that is for different distances between two longitudinal axes of the two bolts 14.1, and 14.2 always a new torque arm and thus a new cast or forging to produce this is necessary. This is associated with high development, manufacturing and storage costs, if a variety of different embodiments of such torque arms must be offered.

In FIG. 3 an inventive torque arm 1 is shown. As described above, the same components are provided with the same reference numerals.

The rod 10 of the torque arm 1 according to the invention is presently designed as a sleeve throughout. Here, the sleeve is of circular shape, but other cross-sectional shapes would be conceivable. However, this could also consist of solid material and have only in the region of the two ends 10.1, 10.2 corresponding sleeve-shaped protrusions.

In the present case, the receiving heads 12.1, 12.2 each comprise a connecting pin 11.1, 11.2, wherein the connecting pins have an inner shape of the rod 10 in the region of the ends 10.1 and 10.2 complementary outer shape. Of course, it would be conceivable that the connecting pins 11.1 and 11.2 are designed such that they are placed on the rod 10. For this purpose, the connecting pins 11.1, 11.2 would be provided with an inner recess which has substantially the same inner diameter as the outer diameter of the ends 10.1 and 10.2 of the rod 10.

In order to produce a torque support 1 according to the invention, the length of the rod 10 is adjusted accordingly in dependence on the required connection length of the rod 10. Thereafter, the two connecting pins 11.1, 11.2 are inserted into the rod 10 or placed on this and, for example, cohesively, inextricably linked, for example by friction welding. Of course, other, in particular positive and positive joining methods are possible.

In the present case, the bolts 14.1, 14.2 of cylindrical shape. Of course, other cross-sectional shapes, in particular polygons would be conceivable. In order to enable a recording of transverse and bending moments, sockets are 17.1, 17.2 provided. These each include on the outer surface of a belly and enclose bolts 14.1, 14.2 in the circumferential direction. The bushes 17.1, 17.2 are used in the bearing 13.1, 13.2. Each bushing 17.1, 17.2 is supported via the belly, which has a substantially spherical outer shape by means of a further bearing element, for example a rubber element in the bearing 13.1, 13.2. Also, further bearing elements for supporting the bushes 17.1, 17.2 on the receiving head 12.1, 12.2 are conceivable. By inventively running bushing 17.1, 17.2 now cylindrical bolts can be used, which significantly reduces the manufacturing cost. In addition, by providing in the diameter of smaller bolts 14.1, 14.2 and corresponding to the inner diameter of smaller bushes 17.1, 17.2 with substantially constant connection length of the bolts 14.1, 14.2 mutually angular positions are compensated (see the dashed lines in the plan view of FIG. 3 ). As a result, with torque supports of the same connection lengths and use in the diameter of different bolts 14.1, 14.2 even small changes in angle during assembly of the torque arms, for example, before commissioning of the rail vehicle in different arrangements of gears and bogies are compensated without a new torque arm must be made. Thus, depending on the translation desired by the operator for different transmission sizes, the same connection lengths can be used.

Another advantage of the cylindrical bolts 14.1, 14.2 is that they could be connected by means of a press fit with the gearset housing 8.1, 8.2, 8.3 and / or the bogie instead of screw. For this purpose, the bolts 14.1, 14.2 and the associated receptacles of the bolts 14.1, 14.2 on the bogie or Radsatzgetriebegehäuse 8.1, 8.2, 8.3 could be provided with tolerances for a press fit accordingly. An additional screw (screw 19) could then serve only to prevent rotation. This must then in Generally do not serve as high demands on the skill, as is the case with screw in the art, so that the production costs can be significantly reduced. An anti-rotation would of course also form-fitting possible, in which case the bolts 14.1, 14.2 and the associated recordings are carried out accordingly.

Since the design of the bolts 14.1, 14.2 is completely flexible, it is for example possible to provide different receiving heads 12.1, 12.2 per torque-supported. For example, the transmission-side receiving head 14.1 could be designed such that it has a bolt 14.1 of a different diameter than the bogie-side receiving head 15.2 associated bolt 14.2. Of course, at least one of the two bolts 14.1, 14.2 could be cylindrical and the other barrel-shaped. For this purpose, appropriately trained different recording heads 15.1, 15.2 would be necessary. Likewise, the ends 10.1, 10.2 of the rod 10 as well as the connecting pins 11.1, 11.2 could be designed correspondingly differently with one and the same torque support.

The torque supports according to the invention have the advantage that they can be pre-assembled at the manufacturer or supplier of the wheelset and / or bogies. So they can be fixed there already at the delivery of the bogie there only with the bogie end. However, they could also be connected only to the wheelset housing 8.1, 8.2, 8.3 at its delivery or only be connected after mounting the former in the bogie with both elements. In any case, a particularly flexible mounting of the torque arms according to the invention is possible, whereby the manufacturing and assembly costs of such a torque arm can be significantly reduced.

LIST OF REFERENCE NUMBERS

1

torque arm

2

wheelset

2.1, 2.2

wheel

2.3

axle

2.4

Radsatzgetriebe

3

wheelset

3.1, 3.2

wheel

3.3

axle

3.4

Radsatzgetriebe

4

wheelset

4.1, 4.2

wheel

4.3

axle

4.4

Radsatzgetriebe

5

feathers

6

frame

7.1, 7.2

sockets

8.1, 8.2, 8.3

Radsatzgetriebegehäuse

9

Anlenkturm

10

Rod

10.1, 10.2

end up

11.1, 11.2

connection thread

12.1, 12.2

Up head

13.1, 13.2

camp

14.1, 14.2

bolt

15

bogie frame

16

axle

17.1, 17.2

Rifle

18.1, 18.2

bearing element

19

screw

Claims (4)

1. A bogie for a rail vehicle, comprising

   1.1 a bogie frame (15);

   1.2 at least one wheel set (2, 4), having two wheels (2.2, 3.1, 3.2, 4.2), a final drive (3), an axle (16) and a final drive housing (8);

   1.3 a torque support for the mutual articulated support of the final drive (3) on the bogie or on the bogie frame (15);
   characterized by the following features:

   1.4 the receiver head (12.1, 12.2) comprises a bearing (13.1, 13.2) with a cylindrical bolt (14.1, 14.2) which is used for support on the respective element, wherein

   1.5 the rod (10) is arranged as a sleeve at least in the region of its two ends (10.1, 10.2);

   1.6 the bearing (13.1, 13.2) comprises a socket (17.1, 17.2) which is arranged in the radial direction of the bolt (14.1, 14.2) between the bolt (14.1, 14.2) and the receiver head (12.1, 12.2) and is supported on the receiver head (12.1, 12.2) via at least one further bearing element (18.1, 18.2);

   1.7 the socket (17.1, 17.2) comprises a bulbous section in the manner of a universal ball joint on its outer circumference, wherein

   1.8 the bolts (14.1, 14.2) have a circular cross-sectional shape at least in the region of their support in the bearing (13.1, 13.2), and

   1.9 the bolts (14.1, 14.2) can be connected to the final drive housing (8.1, 8.2, 8.3) and/or the bogie (3) by means of a press fit, wherein

   1.10 an anti-twisting element is associated with the bolt (14.1, 14.2).
2. A bogie for a rail vehicle according to claim 1, characterized in that the receiver head (12.1, 12.2) comprises a connection pin (11.1, 11.2) which can be placed on or inserted into the rod (10) in the end region of the rod (10).
3. A bogie for a rail vehicle according to one of the claims 1 or 2, characterized in that the connection pin (11.1, 11.2) has a circular external form and the rod (10) has a complementary cross-sectional shape at least in the region of its ends (10.1, 10.2).
4. A bogie for a rail vehicle according to one of the claims 1 to 3, characterized in that the socket (17.1, 17.2) and the at least one bearing (18.1, 18.2) form an integral rubber-metal element.

Images