| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lever operational reaction force controller of a construction machine capable of allowing an operator to feel the operational reaction force of an operation lever not only during the tilting operation of the operation lever but also during the returning operation to the neutral position. <P>SOLUTION: The lever operational reaction force controller of the construction machine includes a reaction force mechanism 30 having an acceleration reaction force imparting unit for imparting the operational reaction force to an operation lever 6 according to the operational hydraulic pressure to be supplied when the operation lever 6 is tiled from the neutral position, and a deceleration reaction force imparting unit for imparting the operational reaction force to the operation lever 6 according to the operational hydraulic pressure to be supplied when returning the operation lever 6 from the tilted state to the neutral position, a turning state detection means 90 for detecting whether an upper turning body 104 is during acceleration or during deceleration, and a controller 9 for controlling an operational pressure changing means 8 based on the result of detection so that the operational hydraulic pressure is supplied to the acceleration reaction force imparting unit when the upper turning body 104 is during acceleration, and the operational hydraulic pressure is supplied to the deceleration reaction force imparting unit when the upper turning body 104 is during deceleration. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
