Patent ID: 7267634
Filing Date: 2007-09-11
Classification: B60W,F16H,Y10T

Abstract:
1. A drive device for a working vehicle having a transmission comprising a forward running stage that is selected by engagement of a forward clutch and a reverse running stage that is selected by engagement of a reverse clutch, in which a motive power of an engine is transmitted to a drive wheel through the selected forward running stage or reverse running stage, the drive device comprising: control means that outputs a reverse running command in accordance with operation of a control unit; brake means that decreases a vehicle speed; braking force control means that controls a braking force of the brake means; and forward/reverse clutch control means that controls respective engagement/disengagement actions of the forward clutch and the reverse clutch, wherein if the reverse running command is output from the control means while the vehicle is running forward, the braking force control means controls the braking force of the brake means such that the vehicle speed is diminished through a first prescribed speed to a second prescribed speed and the forward/reverse clutch control means disengages the forward clutch, when the vehicle speed has reached the first prescribed speed, the reverse clutch is put in a slipping action condition, and after the vehicle speed has reached the second prescribed speed, the reverse clutch is gradually engaged.