ATLET A-Ergo, Service Manual

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D Drriiv ve e u un niit t / / D De es siig gn n a an nd d ffu un nc cttiio on n / / IIn nttrro od du uc cttiio on n 5 5..3 3
ATLET SERVICE MANUAL A-ERGO ATLET SERVICE MANUAL A-ERGO
SMA-Ergo_05_2004A.fm SMA-Ergo_05_2004A.fm
Edition 2004A Edition 2004A
5 5 Drive Drive unit unit
Design and function Design and function
Introduction Introduction
The drive unit is The drive unit is mounted in an assembly containing the brake, drive motor, gearbox and mounted in an assembly containing the brake, drive motor, gearbox and
drive wheel. The steering servo motor is mounted on the same motor bed. drive wheel. The steering servo motor is mounted on the same motor bed.
For technical data regarding component parts, see section 1. For technical data regarding component parts, see section 1.
Drive motor Drive motor
The drive motor on A-ERGO The drive motor on A-ERGO is a brushless three-phase induction motor is a brushless three-phase induction motor. A pulse sensor . A pulse sensor
is enclosed in the is enclosed in the bearing on the non-driving end of bearing on the non-driving end of the motor, which provides speed the motor, which provides speed
feedback to the drive r feedback to the drive regulator egulator, see section 10. , see section 10.
The motor is mounted directly on the gearbox and the The motor is mounted directly on the gearbox and the power transmission takes place via power transmission takes place via
a gear wheel individually adapted to a gear wheel individually adapted to each gearbox. each gearbox.
Gearbox Gearbox
The gearbox is adapted to provide the best gear ratio over the speed range of the drive The gearbox is adapted to provide the best gear ratio over the speed range of the drive
motor.
motor.
The drive motor and drive wheel are mounted on the gearbox. The drive motor and drive wheel are mounted on the gearbox.
The gearbox is mounted on the truck chassis. A gear ring bearing is mounted on the The gearbox is mounted on the truck chassis. A gear ring bearing is mounted on the
gearbox. The steering servo motor drives the gear r
gearbox. The steering servo motor drives the gear ring bearing and in this way ing bearing and in this way turns the turns the
gearbox and drive wheel in the required direction when the truck is steered. gearbox and drive wheel in the required direction when the truck is steered.
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