| 摘要 |
PURPOSE:To readily carry out compensation of direction of machine which is done after steering operation by rotation by equipping a working machine with a third controlling means of automatically returning a speed change gear to a traveling speed before speed reduction after a set time from speed reduction operation by a first or a second controlling means. CONSTITUTION:A little before a machine reaches a levee side, a speed reduction switch 26 attached to an operation lever is pushed to carry out ON operation. Consequently, a timer 23 is started, change operation of a relay switch 24 is done and a stepless speed changer 25 is handled to a lowest speed position by voltage from a potentiometer 13. Then, when a set time elapses, the relay switch 24 is operated and changed to the potentiometer 13 side of a change lever 11 and the stepless speed changer is automatically returned and handled to a traveling speed corresponding to a handling position of the speed change lever 11. |
