DE10241652B4 - Bogie frame for three-axle bogies - Google Patents

Abstract

Bogie frame for triaxial bogies, consisting of side rails, cross beams, a center beam and head beams, characterized in that the cross beams (2 and 2 ') are bent downwards so that the main brake rods are arranged above the top straps of the cross beams (2 and 2') that the brake carriers (7 and 7 'or 8 and 9) are arranged between the cross members (2 or 2') and the head carriers (6 or 6 ') and releasably connected to them, that the brake carriers (7 or 7 ', 8 and 9) can have different designs and that the bogie frame has no cross-sectional weakening in the form of openings for brake components.

Description

The invention relates to a universally applicable bogie frame for three-axle bogies, which can accommodate various brake systems.

In heavy rail freight transport, such as the transport of iron ores and steel products, the railway authorities are trying to increase transport capacity by using wagons with more than four axles. Frequently, three-axle bogies are used.

The number of three-axle bogies in use is very low compared to biaxial bogies. Nevertheless, different types are on the market, for example DE 27 27 336 A1 a three-axle bogie for railway vehicles with a frame composed of welded components and an H-shaped support. This is characterized by the combination of a frame consisting of two half main ribs and a H-shaped middle turntable in which the fifth wheel is connected to the half ribs by combined joints, shafts and bone joints.

First and foremost, three-axle steering axle bogies DB-BA 710 to 716 of Deutsche Bahn are known. These have trapezoid or parabolic springs and a frame made of bent and welded sheets. Furthermore, heavy construction types are used in factory sheds and in railway cranes.

These bogies are either by very complex constructions to satisfy special conditions of use, such as cranes or powered bogies of locomotives, characterized or they are only in a brake variant, such as the bogies DB-BA 710-716 available.

A particular problem with three-axle bogies and the associated car bodies is the placement and design of the brake system. Wagons with three-axle bogies are generally intended for goods with a very high specific weight.

Thus, these cars do not require a long loading length, but still use the permissible wheelset loads. At the same time the bogie with three wheelsets is relatively long. The result remains under the car body very little space for the installation of the brake cylinder, the brake lever and the brake pull rod with slack adjuster. In the bogie itself, the space for the installation of the brake are not very cheap.

Since the middle wheel set must be located below the fulcrum and support point of the car body, extensive structures, consisting of two bogie cross members and a centrally located additional long beam for receiving the rotating pan are required. The tie rods of the brake linkage must be passed through these components or around them.

For the above reasons, constructions have been created which have a large number of openings through load-bearing parts for the brake cable rods, with all negative consequences for the fatigue strength of the frame. This was then only to be ensured by massive Ausgurtung these cutouts and by particularly high production quality in the necessary welding.

In the DE 10 23 067 B discloses a pad brake for particular rail vehicles, which has such shortcomings.

As a result, the bogie frames associated with the prior art are expensive to manufacture and expensive to maintain, as is the case with bogies DB-BA 710-761.

Due to these problems, there is no solution for a bogie with integrated brake cylinder for these types of DB, although this would be very advantageous for the car construction, especially for short cars with three-axle bogies.

Three-axle bogies with built-in pneumatic brake system are known only for special bogies of cranes, construction machinery or locomotives. But then the execution of the brake is kept very simplified, so that additional maintenance costs incurred by the necessary repositioning or readjustment of the brake linkage in case of wear of the brake pad soles.

It would therefore be desirable to have available a bogie of the type in question that is prepared for cost-effective production for different applications or easily adaptable.

The invention is therefore based on the object to provide a bogie frame, which allows the installation of various braking solutions with and without pneumatic brake system and doing without changes to the supporting structure, especially without breakthroughs in the supporting parts, manages. Only the attachment of different brackets is permitted.

The solution of the problem is specified in the characterizing part of the main claim 1. Advantageous embodiments are described in the subordinate claims.

According to the invention, a bogie frame, which solves the formulated problem, has the following features:
The lateral long beams are double T-beams, as are the two cross beams.

However, these are deeply cranked immediately after their connection to the Seitenlangträger. The center girder for the turntable is in turn bent upwards and rests on the two low-lying cross members. The two Seitenlangträger are connected at the ends of the bogie by a respective head carrier made of curved rolled section.

Due to the strong drawn down cross member, the Hauptbremszugstangen can now be arranged above the upper chords of these two carriers. Breakthroughs through these are not required.

The brake components are suspended from brake carriers. These are releasably secured in the area above the Endradsätzen respectively to the associated cross member and head carrier. The brake carriers exert no influence on the load-bearing structure of the bogie frame and can easily be replaced depending on the brake system to be carried out. Only in the middle part are brake hanger bearings directly welded to the center girder. But even here different variants are possible without changing the static structure. If the bogie to be equipped with a pneumatic braking force generation, only an additional brake cylinder carrier needs to be installed. Since all horizontal levers can be mounted above the cranked cross member, no statically relevant changes are necessary.

Reference to an exemplary embodiment, the invention will be explained in more detail below. These are drawings that show the following:

1 Bogie frame in plan view,

2 Cross section through the bogie frame,

3 Bogie frame with conventional brake system,

4 Bogie frame with built-in brake cylinder.

The reference symbols used mean:

LIST OF REFERENCE NUMBERS

1, 1 '

Side sills,

2, 2 '

Crossbeam,

4

Center support,

5

Rotary pan,

6, 6 '

Head carrier,

7, 7 '

Brake support,

8th

Brake support,

9

Brake support,

10

Brake cylinder,

11

Bracket for lever guide,

12

Holder for lever guide.

According to 1 are between the two side girders 1 and 1' crossbeam 2 and 2 ' arranged on which the center carrier 4 with the turntable 5 supported.

The completion of the bogie frame is the head carrier 6 and 6 ' ,

Furthermore, the two are with the cross member 2 respectively. 2 ' and the head carrier 6 respectively. 6 ' bolted brake carrier 7 and 7 ' indicated here for an equipment in which the brake cylinder is arranged in the car body.

2 , A cross section through the bogie frame according to the invention, in particular shows the offset of the cross member 2 respectively. 2 ' immediately after its connection to the side girders 1 and 1' , The center carrier 4 take the turntable 5 on. He is advantageously durchgekröpft upward and based on the two under cranked cross member 2 and 2 ' from.

The 3 and 4 show design variants for the two possible brake variants, namely with conventional brake system ( 3 ) or with built-in bogie brake cylinder 10 ( 4 ).

In the variant with conventional brake system are the two screwed in brake carrier 7 and 7 ' essentially identical.

In contrast, come with the variant with built-in brake cylinder 10 differently designed brake carrier 8th and 9 for use. The brake cylinder carrier is firmly connected to the bogie frame by welding. The latter carries at appropriate places, preferably on the upper chords of the cross member 2 and 2 ' , Bracket 11 and 12 for the lever guides of the brake system.

Further changes to the bogie frame are not necessary for the different brake installation.

In an analogous manner, the installation of a disc brake system is also possible in the presented bogie frame according to the invention.

Claims (6)

Bogie frame for three-axle bogies, consisting of side girders, cross girders, a center girder and head girders, characterized in that the transverse girders ( 2 and 2 ' ) are bent down so much that the main brake pull rods above the upper chords of the cross member ( 2 and 2 ' ) are arranged, that the brake carrier ( 7 and 7 ' respectively. 8th and 9 ) between the cross members ( 2 respectively. 2 ' ) and the headrests ( 6 respectively. 6 ' ) are arranged and detachably connected to these, that the brake carrier ( 7 respectively. 7 ' . 8th and 9 ) may have different types and that the bogie frame has no cross-sectional weakenings in the form of openings for brake components. Bogie frame for three-axle bogies according to claim 1, characterized in that the cross members ( 2 and 2 ' ) between the two side girders ( 1 and 1' ), wherein the cranking area immediately after connection to the side 1 and 1' ), that the middle carrier ( 4 ), which is upturned and the rotary pan ( 5 ), on the cross members ( 2 and 2 ' ) supports two headrests ( 6 and 6 ' ) form the conclusion of the bogie frame and that each a brake carrier ( 7 . 7 ' . 8th or 9 ) between the cross members ( 2 respectively. 2 ' ) and the headrests ( 6 respectively. 6 ' ) is arranged and screwed with these. Bogie frame for three-axle bogies according to claim 1, characterized in that the brake carrier ( 7 and 7 ' ) are identical in terms of equipment with arranged in the car body brake cylinder. Bogie frame for three-axle bogies according to claim 1, characterized in that the brake carrier ( 8th and 9 ) equipped with brake cylinders arranged in the bogie ( 10 ) are designed differently. Bogie frame for three-axle bogies according to claim 1, characterized in that the brake cylinder carrier is connected by welding firmly to the bogie frame. Bogie frame for three-axle bogies according to claim 1, characterized in that on the upper chords of the cross member ( 2 and 2 ' ) Brackets ( 11 and 12 ) are located for the lever guides the brake system.

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