| 摘要 |
A device for active steering of a truck provided with a power steering arrangement (50) includes a steering wheel gear (10) of differential type for transmitting to an output shaft (34) both a steering wheel angle deflection from an input shaft and a steering angle deflection which is superimposed on the steering wheel angle deflection by a positioning device. The transmission of the steering wheel angle deflection in the steering wheel gear (10) is catered for by a gear step (a, b, c, d) to gear down the steering wheel angle deflection to the output shaft (34), with a ratio such that the truck can be steered manually in the event of failure of the power steering (50).
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