| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mobile lifting magnet working machine capable of effectively performing low-speed operation of an engine as a noise insulation countermeasures and a fuel consumption reduction countermeasures while preventing the operation on the working machine side from being extremely delayed or stopped. <P>SOLUTION: The mobile lifting magnet working machine comprises a voltage control circuit which is connected between a generator and a lifting magnet to variably control the output voltage to the lifting magnet, and a control means which boosts the voltage of the generator when the engine speed is in a medium/low speed range, and controls the voltage control circuit so that the output voltage to the lifting magnet is increased proportional to the engine speed in a low engine speed range, and the output voltage is constant in a medium engine speed range. The mobile lifting magnet working machine further comprises a current detection means to detect the current in the generator, and a regulation means 50 to regulate the control by the control means when the current detected by the current detection means is equal to or greater than a predetermined value. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
