EP0857635B1 - Bogie of a railway vehicle and method of manufacturing the same - Google Patents

Abstract

For connection of the transverse beams (3,4) to the longitudinal beams, a tubular section of each transverse beam with the two web plates and upper boom forms an intersection. The web plates have a cut-out(30) originating from the upper edge of the web plate and corresponding to the external diameter of the tubular section, and the upper boom has a break. The transverse beam consists of two outer tubular sections(15) and a centre axially displaced section(16), with the outer section and centre sections intersecting along generatrix.

Description

The invention relates to a bogie of a rail vehicle, its frame consists of two cranked side rails in box construction and consists of two tubular cross members and wherein the longitudinal member each of upper chord, lower chord, inner and outer web plate is made.

Bogies with such frames can be found both in trailers as well as in towing vehicles - where they have a motor and a wear mostly outrageous gear - use. They are too suitable for bogies with tilting technology. For all applications Today, small dimensions, low weight and highest Stiffness required for a long service life.

The small dimensions are not just the entire bogie but to a much greater degree of its scope, because it has many elements to record: the drive in the case of Motor bogies, possibly the additional modules the tilting technology; Feather pillows, shock absorbers, roll stabilizers, Brakes (often also rail brakes) and their To accommodate actuators.

For these requirements, the connection zone of side members and cross member, which usually coincides with a bend, especially vulnerable. There occur voltage spikes in the side member on, reinforced even by registered by the cross member moments, of which the inner web plate take up a higher proportion must as the outer. But especially in this zone of highest tension is also the accessibility when welding and thus the quality of the welds critical.

Generic bogies are described in EP 189 382 A2, EP 287 161 A1 and EP 387 744 A2. All these publications show a frame according to the preamble, the first is intended for tilting technology.

It is therefore an object of the invention, the frame of a bogie improve so that it meets all these requirements, with the lowest possible production costs.

According to the invention this is achieved by the characterizing features of claim 1.

So it is not as before the cross member between upper and Bottom flange welded to the web plates, but also with the Upper chord. As a result, the tension zone of the longitudinal member is not from Crossmember weakened and the introduction of force from the cross member to the side member via a much longer intersection line, which also runs in three dimensions. The intersection line is a prerequisite for a weld. The upper strap is due to the connection with the cross member in the pressure zone even more stiffened, which increases its buckling strength. On top of that comes the much better accessibility and so achievable higher quality of the welds.

In a preferred embodiment, the tubular Cross member made of two outer pieces of pipe and a middle off-set pipe section, wherein the outer pipe sections and the middle pipe section to cut each other by generatrix (Claim 2). By the transfer, together with the special Connection with the upper flange of the longitudinal member may be the cross section the cross-tube forming tubes increases and thus The stiffness can be further increased without leaving room for the extra Lose assemblies. Even more: their accommodation is facilitated by the offset. So can a Radscheibenbremse and optionally the drive motor on the middle Tube piece better supported. By the intersection Generating along is also the force and torque transmission secured between the staggered pieces of pipe.

These benefits are further increased when the axle offset the middle pipe section opposite the outer pipe sections upwards or backwards, so that the distances of the middle pipe sections in the direction of travel greater than that of the outer Pipe pieces are (claim 3). There is room for support the pivot and / or the tilting mechanism won.

Finally, it is advantageous if the ends of the outer Pipe pieces and the inner pipe section are closed (Claim 4). This not only increases the strength, but also better corrosion protection and cleaning possible.

a) Das innere Stegblech wird auf den Querträger aufgefädelt und sodann innen und aussen mit diesem verschweißt,

b) Das äussere Stegblech wird auf den Querträger aufgefädelt und sodann mit diesem verschweißt,

c) Die beiden an den Querträger anschließenden Teile des Obergurtes werden angelegt und mit den Stegblechen und dem Querträger verschweißt,

d) Der Untergurt wird mit den Stegblechen verschweißt.

The invention also relates to a method for welding the tubular cross member of a bogie with the box-shaped longitudinal members, which consists in the following steps (claim 5):

a) The inner web plate is threaded onto the cross member and then welded inside and outside with this,

b) The outer web plate is threaded onto the cross member and then welded to this,

c) The two adjoining the cross member parts of the upper flange are created and welded to the web plates and the cross member,

d) The bottom flange is welded to the web plates.

Characterized in that according to step a) first welded the inner web plate is, a counter weld is possible. That's the way it is taken into account the fact that the cross member in the inner Web plate enters a larger torque than in the outer. Because the, upper belt interrupted by the cross member and welded first, the weld is also from accessible inside.

Preferably, the process is conducted so that in step a) only the outer tube pieces welded to a side member and only after completion of the side members this over the middle pipe section are connected (claim 6). That's simplified the manipulation during welding and gives a higher Accuracy of the finished frame.

In development and under utilization of the inventive Procedures opened up possibilities, the welding connection becomes of inner web plate and cross member and upper strap and cross member made from inside and outside (claim 7). So the welds can be formed there the strongest become where the forces are greatest.

Fig.1:

Eine Draufsicht auf den Rahmen des erfindungsgemäßen Drehgestelles,

Fig.2:

Eine Seitenansicht desselben Rahmens,

Fig.3:

Eine Ansicht desselben Rahmens nach III in Fig.2, wobei die Längsträger weggelassen sind,

Fig.4:

Detail IV der Figur 2 im Mittenschnitt, vergrößert,

Fig.5:

Schnitt nach V-V in Fig.4, und

Fig.6:

Schnitt nach VI-VI in Fig.4.

In the following the invention will be described and explained with reference to figures. They show:

Fig.1:

A top view of the frame of the bogie according to the invention,

Figure 2:

A side view of the same frame,

Figure 3:

A view of the same frame according to III in Figure 2, wherein the side members are omitted,

Figure 4:

Detail IV of Figure 2 in the middle section, enlarged,

Figure 5:

Section after VV in Figure 4, and

Figure 6:

Section according to VI-VI in Fig.4.

In Figures 1 and 2, the two side members are summarily denoted by 1 and 2 and the two cross members 3 and 4. Since both are essentially the same, the following is just more of the side members 1 and the cross member 3 described. Of the Side member 1 is double cranked, with a low-lying Middle part 5 on both sides rising parts 6 and to this connect again high-lying end parts 7. These parts 5,6,7 go over each other over cranks.

The side member 1 consists (Figure 6) of several, a box forming sheets: a top flange 8 in the middle part 5 with a continuation 9 in the ascending part 6, a vertical one inner web plate 10, a vertical outer web plate 11th and a lower flange 12. In the area of the connection of the cross member 3 can still a reinforcing plate 13 (Figure 4) are provided his.

The cross member 3 connects the two side members 1.2. He insists from a central pipe section 16 and on both sides subsequent outer pipe sections 15. The pipe sections 15,16 are offset from each other and penetrate each other longitudinally Generating 17. The horizontal and vertical misalignment is designated with 21 and such that the center distance 23 of the middle pipe sections 16 of the cross member 3.4 is greater than that Center distance 22 of the outer pipe sections 15. At the intersection the pipe sections 15,16 along the generatrix 17 is the one or other piece of pipe cut out along the generatrix and along the generatrix 17 from the outside and optionally also welded from the inside to the other. The beveled ones improve Ends of the central pipe section 16, the accessibility. The ends of the pipe sections 15,16 in the region of this compound can by means of welded lid pieces 18,19 hermetically be closed.

The outer tube piece 15 forms at its outer end a Tube head 20 which is welded to the longitudinal member 1. To penetrates the tube head 20 both web plates 10,11 and the Upper flange 8.9, which is interrupted at the point of penetration is. The penetration is thus in the pressure zone of the bending beam shifted to thinking side members. Both to the Side members 1,2 as well as to the cross member 3,4 are a Vielzahi welded by ears, brackets and other connecting parts. These are not designated in detail.

Now, the assembly of the frame with reference to the figures 4,5 and 6 described, the specifics of the invention Welding process become clear. The web plates 10,11 are level, but according to the side view (Figure 2) tailored Sheets with circular cutouts 30, attached to the Top 31 of the web plates are open. In this circular Cutouts 30 fit the tube heads 20 of the cross member 3,4. First the inner web plate 10 is pushed over the tube head 20 and then welded all around inside and outside (Figure 5). So arise the inner (32) and the outer (33) welding bead. Possibly is still a reinforcing plate 13 in the weld included. Then, the outer web plate 11 on the Tube head 20 pushed and also welded, the resulting Welding beads 34, 35 can be seen in FIG.

Now the Obergurtbleche 8.9 are welded. Because of the circular Section 30 is open to the upper edge 31, the Top strap cut from the tube head 20. At this intersection on the one hand the upper flange 8 and on the other hand the continuation of the upper belt 9. For connection to the web plates 10, 11, the welds 36, 37 (FIG. 6) are laid. thereupon becomes the connection of Obergurtbleche 8.9 with the pipe head 20th welded, inside and out. This results in FIG. 4 visible welds 38,39 along generators of the Tube head 20 run. Since the lower flange 12 is not mounted yet is, the internal weld beads 38 can be placed become. This creates a particularly rigid three-dimensional Connection between side member 1 and cross member 3. Finally is still the lower flange 12 welded. Since the lower chord 12 the web plates 10,11 projecting laterally, are the two Welding welds 41,42 easily from the outside.

In this way, the two side members 1,2 can be independent welded together from each other with the outer pipe sections of the cross member 3 be, with the manipulation relatively simple is. Only then are the two side members 1,2 together connected by the middle pipe section 16 with the two outer Pipe pieces 15, which already welded to their side members are, in turn, welded. This happens by connection along the generatrix 17 and then by Welding the cover pieces 18,19. This way will total a very stiff and light frame made that then suitable for bogies of various types is.

Claims (7)

1. Bogie of a rail vehicle, the frame of which consists of two angle-bent longitudinal carriers (1, 2) of box-like construction and of two tubular transverse carriers (3, 4), wherein the longitudinal carriers each consist of an upper boom (8), lower boom (12), inner and outer web plates (10, 11), wherein for connection of the transverse carriers (3, 4) to the longitudinal carriers (1, 2) in each case a tubular part (20) of the transverse carrier (3, 4) forms an intersection with the two web plates (10, 11), for which purpose the web plates (10, 11) has [sic] cutouts (30) starting from the upper edge (31) and corresponding to the outer diameter of the tubular part (20), characterised in that the tubular part (20) also forms an intersection with the upper boom (8, 9) for which purpose there is an interruption in the upper boom (8, 9).
2. Bogie as claimed in claim 1, characterised in that the tubular transverse carrier (3, 4) consists of two outer tubular pieces (15) and a middle axially-offset tubular piece (16), wherein the outer tubular pieces (15) and the middle tubular piece (16) intersect along the generatrix (17).
3. Bogie as claimed in claim 2, characterised in that the axial offset arrangement (21) of the middle tubular piece (16) with respect to the outer tubular pieces (15) is upwards forwards or rearwards so that the spaces (23) between the middle tubular pieces (16) in the travel direction are greater than the spaces (22) between the outer tubular pieces (15).
4. Bogie as claimed in claim 3, characterised in that the ends of the middle tubular piece (16) are closed by cover pieces (18).
5. Process for welding the tubular transverse carriers (3, 4) of a bogie to the box-like longitudinal carriers (1, 2), wherein the bogie has the features of claim 1, characterised by the sequence of working steps:

   a) The inner web plate (10) is pushed onto the transverse carrier (3; 20) and then welded thereto on the inside and outside (32, 33),

   b) The outer web plate (11) is pushed onto the transverse carrier (3; 20) and then welded thereto on the inside and outside (34, 35),

   c) The two parts of the upper boom (8, 9) which adjoin the transverse carrier (3) are positioned and welded to the web plates (10, 11) and the transverse carrier (3; 20),

   d) The lower boom (12) is welded to the web plates (10, 11).
6. Process as claimed in claim 5, characterised in that in step a) only the outer tubular pieces (15) are welded to a longitudinal carrier (1, 2) and only after the longitudinal carriers are finished are they connected via the middle tubular piece (16).
7. Process as claimed in claim 5, characterised in that the welding connections of the inner web plate (10) and of the transverse carrier (3; 20) and of the upper boom (8, 9) and the transverse carrier (3; 20) are carried out from the inside and outside (32, 33, 38, 39).

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