| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a traveling type hydraulic working machine capable of maintaining excellent complexity, and enhancing the workability and the working efficiency by controlling reduction of the maximum pump torque to correctly grasp the working situation during the composite operation of the traveling and a working actuator. <P>SOLUTION: The correction torque ΔT corresponding to the deviation ΔN of the number of rotation is operated by a correction torque operation unit 83, the torque converter speed ratio e is calculated from the input/output number of rotation of a torque converter 31 by a speed ratio operation unit 84, and a first determination coefficient α corresponding to the speed ratio e and a second determination coefficient β corresponding to the pump pressure are operated by a traveling state determination unit 85 and by a working state determination unit 86, respectively. The first determination coefficient α and the second determination coefficient β, whichever is the smaller, is selected by a selection unit 87. The correction torque ΔT is multiplied by the determination coefficient γ to obtain the correction torque ΔTA by a multiplication unit 88, and the correction torque ΔTA (a negative value) is added to the pump base torque TR by an addition unit 89 to obtain the corrected pump base torque TRA, and the maximum pump absorption torque is controlled to be TRA. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
