Railway rolling stock – Trucks – Bogie
Patent
1998-10-14
2000-10-17
Avila, Stephen
Railway rolling stock
Trucks
Bogie
105164, 1051991, B61F 300
Patent
active
061315206
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention concerns a rail vehicle having at least one inclinable superstructure with one current collector. Such a vehicle is described in European Patent No. 485,273 A1. According to this known case, the superstructure is supported on two bogies each having a pendulum carrier and a spring system. When turning, the superstructure can be inclined by an angle of inclination .alpha. with respect to the travel path (top edge of the track). Angle of inclination .alpha. thus also includes the inclination of the pendulum carrier with respect to the travel path, which is defined as roll angle .beta.. Roll angle .beta., which describes the spring deflection of the superstructure, also depends on the centrifugal force that occurs in turning. Simultaneously with the inclination of the superstructure by its angle of inclination .alpha., the current collector is retracted against the inclination of the superstructure, taking into account the angle of inclination .alpha.. Roll angle .beta. is not taken into account in the guidance of the current collector, so there may be great deviations, possibly even inadmissable deviations from the middle position of the current collector relative to the plane of the contact wire or to the structure clearance of the superstructure, especially with traction vehicles that have a soft spring suspension for comfort.
Another rail vehicle with an inclinable superstructure is described in German Patent No. 32 32 153 C2. A current collector is arranged on the roof of the superstructure and is joined with an articulation to a column attached to the bogie. The current collector is thus held in a certain position in relation to the bogie. The column, which runs mostly inside the superstructure, passes through the roof of the superstructure. Again in this case, roll angle .beta. is not taken into account in guiding the current collector.
SUMMARY OF THE INVENTION
The object of the present invention is a rail vehicle with an inclinable superstructure, where the current collector can be aligned approximately centrally with the contact wire even in turning.
The rail vehicle according to the present invention includes at least one superstructure which can be inclined by an angle of inclination .alpha. and is supported on at least one undercarriage, with at least one current collector arranged on its roof. The current collector can be retracted against the inclination of the superstructure by an adjustment angle .gamma.. According to the present invention, adjustment angle .gamma. is formed by the difference between angle of inclination .alpha. and roll angle .beta..
With such a rail vehicle, roll angle .beta. is taken into account in guiding the current collector. The manipulated variable for the current collector is thus no longer only angle of inclination .alpha., but also adjustment angle .gamma., which is formed by the difference between angle of inclination .alpha. and roll angle .beta.. This ensures that, regardless of the type of spring suspension of the vehicle or the type of undercarriage and regardless of the centrifugal forces and crosswind effects, the current collector is always aligned approximately centrally with the contact wire when the superstructure is inclined. Due to the more accurate alignment of the current collector with the plane of the contact wire, the contact quality is improved in current collection, and wear on the drag strip of the current collector is reduced.
BRIEF DESCRIPTION OF THE DRAWINGS
Additional advantages and details of the present invention are further described below in conjunction with the drawings.
FIG. 1 is a cross-sectional view taken through a first embodiment of a vehicle constructed according to the principles of the invention, showing also the area of the undercarriage;
FIG. 2 is a cross-sectional view similar to that of FIG. 1, illustrating a second embodiment of the vehicle;
FIG. 3 is a side view of a first embodiment of a mechanical adjusting device for a current collector;
FIG. 4 is a side view of
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Avila Stephen
Olson Lars A.
Siemens Aktiengesellschaft
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