Electrically driven lift truck

Details Electrically driven lift truck Electrically driven lift truck

1995-01-10

1997-06-10

Sircus, Brian

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Running-speed control

318799, 318802, B60L 116

Patent

active

056383878

ABSTRACT:
A lift truck has a tractive-power electric motor, an electric motor which actuates a pump for the hydraulic circuits, and batteries which supply the electric motors. In order to obtain a long working life as well as reliability and a high performance, the tractive-power motor or both motors are asynchronous and there are provided devices for sensing the angular positions and angular velocities of the motors and an electronic control unit connected to the sensor devices for controlling the power supplies to the motors in dependence on required velocities for the motors and on the basis of data provided by the sensor devices.

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