Patent ID: 6241037
Filing Date: 2001-06-05
Classification: B60K,B62D

Abstract:
A device for a differential gear for vehicles comprising a vehicle drive (32, 210) capable of driving the vehicle and a turnable wheel (18, 212) capable of changing a direction of the vehicle, which differential gear (26) comprises an input drive shaft (24, 128, 146), two output shafts (28, 30) connected to the vehicle drive (32, 210), at least one hydraulic pump (34, 90, 125, 152, 154) which is drivably connected to the vehicle drive which is disposed between an engine (20) of the vehicle and the two output shafts (28, 30) and capable of producing a hydraulic flow, and at least one hydraulic motor (70) communicating with the hydraulic pump and arranged to the differential gear (26), capable of achieving a difference in rotational speed between the output shafts, characterized by said turnable wheel (18, 212) connected to a device (48, 156, 158, 214) for transferring a steering deflection of the turnable wheel (32, 210) to a regulating mechanism (46, 94) of said pump and by a transmission (36, 129) which is connected to the vehicle drive at the output of or after a gear box (22, 132) to drive said pump (34, 90, 125, 152, 154) to obtain direct proportionality between the pump speed and a propulsion velocity of the vehicle, such that the output shafts (28, 30) are driven with a rotational speed difference which matches a curve radii of the turnable wheel (18, 212) and the propulsion velocity of the vehicle.