Drive device for an industrial truck
A drive device for an industrial truck includes a pivoted bolster rotatable around a vertical axis (V), two drive wheels ( 4, 5 ) mounted on the pivoted bolster and a device located axially between the drive wheels ( 4, 5 ) to generate a differential action between the drive wheels ( 4, 5 ). A vertically oriented motor ( 6 ) can be provided above the drive wheels ( 4, 5 ) and a mechanical differential ( 7 ) can be coupled with the motor ( 6 ) and the drive wheels ( 4, 5 ). Alternatively, each drive wheel ( 4 or 5 ) can be coupled with its own motor ( 8 or 9 ). Alternatively still, a double rotor electric motor ( 10 ) having two rotors ( 10 c , 10 d ) and a common stator ( 10 b ) can be located between the drive wheels ( 4 or 5 ) and coupled with a neighboring drive wheel ( 4 or 5 ).
1 . A drive device for an industrial truck, comprising:
a pivoted bolster rotatable around a vertical axis;
two drive wheels mounted on the pivoted bolster parallel and in mirror symmetry with respect to the vertical axis; and
a device located axially between the drive wheels to generate a differential action between the drive wheels,
wherein each drive wheel is coupled with its own motor.
2 . The drive device as claimed in claim 1 , wherein downstream of each motor is an integrated reducing gearset.
3 . The drive device as claimed in claim 1 , including a brake integrated into each motor.
4 . The drive device as claimed in claim 2 , including a brake integrated into each motor.
5 . The drive device as claimed in claim 1 , wherein at least one motor is an electric motor.
6 . The drive device as claimed in claim 5 , wherein at least one motor is a three-phase motor.
7 . The drive device as claimed in claim 1 , wherein at least one motor is a wheel hub motor.