Tschanz drive
The Tschanz drive or Oerlikon single-axle drive is a fully sprung single-axle drive for electric locomotives named after its inventor Otto Tschanz or after the Oerlikon machine factory . The drive could not prevail against the cheaper and lighter Buchli drive .
construction
The Tschanz drive is a fully sprung drive, which means that the motors are housed in the sprung part of the locomotive and are therefore less exposed to the bumps and blows of the rails, but also that the forces on the rails from the wheelsets are lower because less unsprung weight is directly associated with these.
The traction motor is firmly mounted in the locomotive box and connected to a single-stage gear drive that extends down next to the wheelset. A cardan shaft transfers the power from this gearbox to the drive axle . The PTO shaft on the SBB Fb 2/5 runs through the hollow shaft of the gear wheel and the hollow axle of the drive wheel set, with which it is connected on the opposite side of the vehicle.
The drive was simplified in the version of the SBB Ae 4/8 . The cardan shaft was shorter than that of the SBB Fb 2/5 and flanged directly to the wheel disc of the drive axle behind the gear , which therefore did not have to be made hollow.
Because of the additional gear ratio, the Tschanz drive was heavier than the Buchli drive and could therefore not prevail.
Vehicles with Tschanz drive
| country | Railway company | model series | number | Construction year | Manufacturer | Axis formula | commitment | image |
|---|---|---|---|---|---|---|---|---|
 Switzerland
|
SBB | Fb 2/5 | 1 | 1918 | SLM , BBC | 1 '(1Bo) 1' | Test locomotive - one wheel set with Buchli drive, one wheel set with Tschanz drive with a hollow shaft, third wheel set without drive |
|
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Switzerland
|
BTB | BCe 2/5 | 2 | 1921 | SIG , SLM, MFO | B + (1'2 ') | Railcar for three-phase current 750 V 40 Hz |
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Switzerland
|
SBB | Ae 4/8 | 1 | 1922 | SLM, BBC | (1'Bo1 ') (1'Bo1') | Test locomotive - one half of the vehicle has a Tschanz drive without a hollow shaft, the other half with a Buchli drive |
|
 France
|
PLM | 242 BE 1 | 1 | 1925 | Batignolles-Châtillon , MFO | (2'Bo) (Bo2 ') | Test locomotive for 1500 V direct current |
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France
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PLM | 262 AU | 4th | 1929-1930 | Batignolles-Châtillon, MFO | (2'Co) (Co2 ') | Locomotives for the north ramp of the Mont-Cenis railway |
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Patents
- Patent US1311928 : Driving mechanism for railway vehicles with electric motors rigidly mounted on spring-supported frames. Registered on November 25, 1916 , published on August 5, 1919 , inventor: Otto Tschanz.
- Patent CH72442 : Drive device on railway vehicles with motors firmly mounted on the spring-loaded frame. Registered on May 16, 1916 , inventor: Otto Tschanz.
- Patent FR484430 : Mécanisme moteur pour véhicules de chemins de fer, avec moteurs électriques rigidement fixés au chassis mounted sur ressorts de suspension. Registered on October 3, 1917 , inventor: Otto Tschanz.
literature
- K. Sachs: Electric full-line locomotives . Julius Springer, Berlin 1928, p. 308-309 (footnote).
- Electrification of the Gotthard Railway . In: Schweizerische Bauzeitung . tape 69/70 , no. 7 , 1917, pp. 83 , doi : 10.5169 / seals-33931 .
Individual evidence
- ↑ a b Engelbert Wist: The locomotive drives with single-phase alternating current: An investigation into the relationships between motor dimensioning, gear arrangement and limit power in single-phase full-rail locomotives . Springer, 1925, ISBN 978-3-662-33183-5 , pp. 61 ( Google Book ).