Daimler Chrysler Ag

Markus Koch

Frank Hentschel

Rolf Krouzilek

Ulrich Hachmann

Wolfgang-Dieter Richter

Andreas Daberkow

Norbert Ott

G&uuml;nther Himmelstein

This invention relates to a method on a truck for railway vehicles to measure the curvature of a track and a method for configuring the steering orientation of an axle of a rail truck as a function of the curvature of the track, which axle is rotationally fastened to a truck frame. The curvature of the track is determined by dividing a yaw rate by a translation rate, and the wheels are oriented on the basis of a setpoint steering angle (&ggr; ) which is calculated by multiplying the track curvature (&khgr;) by one-half the distance between the two axles of the truck.

Method for curve recognition and axle alignment in rail vehicles

A method for the drive coordination of a rail-guided vehicle with individual-wheel drive traveling on straight track, including the steps of determining a differential speed (&Dgr;n) of opposite track wheels and a control value (&Dgr;M) by a controller as a function of a set point, whereby the set point is ideally zero and the frequency and the damping of the control value (&Dgr;M) can be dynamically adjusted by controller parameters. The invention further comprises a method for the drive coordination of a rail-guided vehicle with individual-wheel drive, in particular when the vehicle is traveling over curves, in which at least one axle is fastened so that it can rotate with respect to the underbody, whereby the angular position (&ggr; ) of the axle with respect to the underbody is regulated so that the track wheels are tangential to the rail by setting the angular position (&ggr; ) of the axle by means of the torque set points (M M ) of the individual wheel drives. This invention further comprises a combination of the two methods described above, whereby the axle is fixed by arresting means as a function of the radius of the curve.

Method for drive coordination of rail-guided vehicles with individual-wheel drive

A truck for a railway vehicle has a truck frame with four individual wheels, which are mounted so that they can rotate around horizontal axles, and whereby one wheel pair is driven. To be able to negotiate tight curves with minimal wear, maximum safety and low construction costs, and to be able to achieve higher speeds on straight segments of track, the driven wheel pair can be steered radially with respect to the curve around a common vertical axis as a function of a setpoint determined by a sensor system, while the non-driven individual wheels are combined into a self-steering individual wheel module so that they can each pivot around their own vertical axes, and can be coupled together so that they are synchronized by means of a steering device.

Running gear for rail vehicles

Growing community of inventors

Schwabach, Germany

Markus Koch