US 7,066,095 B2 · Railway undercarriage with a radially adjustable wheel axles

Abstract

A rail vehicle undercarriage comprises a load bearing implement 1 in the form of the bogie frame of a two-axle bogie, wherein the load bearing implement 1 is supported on two wheel pairs 4, 4; 4, 4 by means of spring elements 2. One respective steering rod 9 that extends in the running direction of the wheels is provided per wheel 4, wherein said steering rods are coupled to the wheel carrier 3 adjacent to the corresponding wheel 4 with one end and to the load bearing implement with their other end in coupling points 8, 10. The wheel pairs can be turned relative to the load bearing Implement. In order to achieve a turning movement of the wheel pairs towards a curve-radial adjustment which depends on the curve radius of the currently used track, the respective steering rods 9 are directly coupled to the load bearing implement 1 in coupling points 10. In addition, the coupling points 10 of the steering rods 9 of at least one wheel pair 4, 4 are, referred to the plane defined by the contact points 6 between the wheels 4 and the rails 7, situated above the coupling points 8 of the steering rods 9 on the corresponding wheel carrier 3 when the steering rods 9 point toward the central region between two wheel pairs in the running direction of the wheels.

Claims17

Dependent claims

A rail vehicle undercarriage with at least one load bearing implement that is supported by means of at least one spring element on at least one of two associated wheel pairs that are arranged behind one another in the running direction, and with one steering rod per wheel which extends approximately in the running direction of the respective wheel, one end of each respective steering rod being connected to a corresponding wheel carrier at a coupling point adjacent to the wheel and the other end of each respective steering rod being coupled to the load bearing implement, the wheel pairs being turnable relative to the load bearing implement, wherein the respective steering rods are directly coupled to the load bearing implement at coupling points, which are either

a) above the coupling points of the steering rods on the respective wheel carrier if the steering rods are situated within an intermediate space between the associated wheel pairs in the running direction of the wheels or
b) underneath the coupling points of the steering rods on the respective wheel carrier if the steering rods are situated outside the intermediate space between the associated wheel pairs in the running direction of the wheels,
in order to achieve centrifugal force induced, automatic, curve radial adjustment of the wheel pairs on negotiating curves.

A rail vehicle comprising:

an undercarriage comprising:
a load bearing implement;
a first wheel pair comprising two wheels, each wheel having a wheel carrier movably connected to the load bearing implement so that the first wheel pair can pivot relative to the load bearing implement;
two first steering rods extending approximately in the running direction of the wheels, each first steering rod having a first end connected to a corresponding wheel carrier adjacent to the respective wheel at a first coupling point and a second end coupled to the load bearing implement at a second coupling point so that the position of the second end is fixed in relation to the load bearing implement;
a second wheel pair arranged behind the first wheel pair in a running direction and comprising two wheels, each wheel having a wheel carrier movably connected to the load bearing implement so that the second wheel pair can pivot relative to the load bearing implement;
and
two second steering rods extending approximately in the running direction of the wheels, each second steering rod having a first end connected to a corresponding wheel carrier adjacent to the respective wheel at a first coupling point and a second end coupled to the load bearing implement at a second coupling point so that the position of the second end is fixed in relation to the load bearing implement;
wherein the higher of the first and second coupling points of both the first and the second steering rods is located nearest a central point located between the first and second wheel pairs.

5 more elements

Dependencies are inferred from the claim text.

Railway undercarriage with a radially adjustable wheel axles

Life of this patent

Railway undercarriage with a radially adjustable wheel axles

Life of this patent

Abstract

Claims17