| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic control device for braking which can effectively reduce the braking distance of a vehicle by the automatic braking control independent from a braking operation, and is suitable for the automatic braking control even with a factor of increasing the braking distance such as a slip of a braked wheel during the braking operation. SOLUTION: A control unit 26 actuates auxiliary brakes 32 and 32 provided on right and left wheels via a brake valve unit 31 when the slip of rear wheels (driving wheels) is detected. The brake valve unit 31 comprises a pressure reducing valve 70, a non-return valve 71, an accumulator 69, two solenoid valves 73 and 74, and a pressure sensor 75, and a hydraulic pressure source is formed of the accumulator 69 for accumulating the pressure oil fed from a pump 28 for cargo handling operation. When the slip is detected, one set of the solenoid valves 73 and 74 are opening/closing-controlled by the control unit 26 so that the detected hydraulic pressure by the pressure sensor 75 is the set value.
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