| 摘要 |
PURPOSE:To make it possible to keep stable travelling for a working machine, always even on uneven surfaces or inclined surfaces, by tilting the working machine to the ascending inclined surface side with respect to a travelling device body. CONSTITUTION:A comparator 15 receives a detecting signal from an inclination detector 14 for detecting the inclined angle of a travelling device body 2 with respect to the horizontal surface and a detecting signal from a potentiometer 13 for detecting the inclined angle of a working machine 1 with respect to the travelling machine body 2, and delivers a deviation signal in accordance with these two detecting signals to an amplifier 16. The amplifier 16 transforms the signal into a voltage signal and delivers the latter to a drive motor 11 which therefore rotates, through a transmission unit 17, the working machine 1 which is fixed to a swingable shaft 9, in the direction in opposite to the inclined direction of the travelling device body 2 so that the working machine 1 is made perpendicular for positioning the gravitational center G of the working machine 1 on the swingable shaft 9. The output from the amplifier 16 to the motor 11 ceases when the deviation of the detecting signal of the potentiometer 13 with respect to the detecting signal of the inclination detector 14 becomes zero, so that the operation of the machine is stopped. |
