| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydraulic pump control system of an industrial vehicle that controls a flow rate so as to discharge a necessary amount of oil from a hydraulic pump to a brake control circuit, thereby achieving energy saving. <P>SOLUTION: The hydraulic pump control system for an industrial vehicle that controls brake by hydraulic oil discharged from a hydraulic pump includes: accumulators 33, 34 that accumulate hydraulic oil for brake control; and an unloader valve 10 having a first valve 15 that is switched for accumulating the hydraulic oil in the accumulators 33, 34 when the pressure in the accumulators 33, 34 is a predetermined value or lower, and returning the hydraulic oil to a tank 2 when the pressure in the accumulators 33, 34 reaches the predetermined value. The hydraulic pump includes a variable displacement pump 5 for controlling a tilt angle by using a primary-side pressure of the switched first valve 15 of the unloader valve 10 as a load sensing pressure. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
