Westinghouse-Federantrieb - Westinghouse-Federantrieb
The Westinghouse spring drive ( quill drive ) is a radial and torsionally elastic power transmission ( shaft - coupling ) between the electric traction motors and the drive wheels of an electric locomotive . The construction is named after the Westinghouse company that developed this drive for the New York, New Haven and Hartford Railroad until 1912 .  It is no longer used today because it is technically obsolete.
The Westinghouse spring drive was the first hollow shaft drive . The radially elastic mobility of its two couplers at the ends of hollow shaft enables the vertical springs of the axle relative to the surrounding hollow shaft. The traction motor is fully suspended together with the vehicle body.
Due to the additional torsional flexibility of its two clutches, a jerky torque transmission that z. B. occur when starting and can lead to slipping ( skidding ) of the wheels on the rails, mitigated.
The wheelset shaft is enclosed by a hollow shaft mounted in the vehicle body . The large wheel , which is driven by the pinion of the drive motor, is pressed onto the hollow shaft . Be designed when using a twin engine. The hollow shaft is connected via coil springs with the spokes of the driving wheels , respectively. The claws on the hollow shaft are attached in such a way that when the direction of travel remains the same, the springs are subjected to tension in one wheel and compression in the other.
Further developments of the Westinghouse spring drive:
The following locomotives are equipped with Westinghouse spring drives, among others:
PRR GG1 - drive with two large wheels on the hollow shaft
- Hans-Peter Bärtschi: Electric locomotives from Swiss factories . In: Verkehrshaus der Schweiz (Ed.): Coal, electricity and rails . The railroad conquers Switzerland. Verlag NZZ, Zurich 1998, ISBN 3-85823-715-9 .