| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To eliminate a starting shock when starting to travel again by operating a main speed change lever after stopping by operating a parking brake, in a hydraulic drive vehicle in which a hydraulic variable speed device is used for a power transmission system. <P>SOLUTION: This speed-change controller is configured to change the output revolutions of the hydraulic variable-speed drive 1 by an actuator 3, which is operated responding to the speed-change position of a speed-change operation tool 4. A control means A is provided to turn on the parking brake from the operation of the parking brake operation tool 5 and to turn off the parking brake from manual operation to a neutral position of the speed-change operation tool 4 by operating the actuator 3 to change the hydraulic variable-speed drive 1 to a speed-change neutral state. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
