| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic device of a hydraulic brake for a truck in a working train for a track capable of restricting movement of the truck by rapidly operating the brake when a hose transmitting oil pressure between a working vehicle and the truck is cut and the oil pressure is lost. SOLUTION: A hydraulic unit 5 is mounted on the working vehicle 1 of the working train for the track connecting the truck 3 to the working vehicle 1 through a connecting device 4. The hydraulic unit 5 and a hydraulic pipe passage 7 of a brake device 10 for braking wheels provided on the truck 3 are connected through a hydraulic hose 6, and an opening and closing valve 8 is provided between the hydraulic hose 6 and the hydraulic pipe passage 7. COPYRIGHT: (C)2009,JPO&INPIT
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