| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device for a plurality of motors and clutches surly executing a sequence of engagement/disengagement of clutches and fixing/ release of 0 tilting amounts of hydraulic motors, and preventing a shift shock and a hydraulic motor load release. SOLUTION: This device is provided with a 0 tilting fixing means fixing a tilting amount of a first hydraulic motor on zero when a designated 0 fixing pressure is inputted, a clutch disengaged when a designated release pressure higher than the 0 fixing pressure is inputted, a hydraulic vehicle speed detection means detecting a vehicle speed from a vehicle speed signal pressure in proportion to the vehicle speed, and a control valve means releasing a command pressure to be outputted as a return pressure connected to a tank until the vehicle speed signal pressure inputted from the hydraulic vehicle speed detection means reaches a designated starting pressure and starting output of the command pressure to the 0 tilting fixing means and the clutch when the vehicle speed signal pressure exceeds a designated value. |
