Transmission system for hydraulically propulsed vehicle with a slewing upper body and with a hydrostatic piston engine with position feedback

摘要

Transfer system comprises an upper carriage rotating on a lower carriage which contains a hydrostatic piston machine for driving the vehicle and a first emitting and/or receiving device. A second emitting and/or receiving device is arranged in the upper carriage to communicate in wireless manner with the first emitting and/or receiving device. Preferred Features: The hydrostatic piston machine has a housing (15, 16) and a rotating cylinder drum (18). An electrically conducting winding (36) is arranged in the piston machine in the housing. A permanent magnetic body is fixed to the cylinder drum so that a magnetic field is produced when the drum is rotated.