| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a parking brake device of a tractor-trailer combination vehicle with reduced consumption of working fluid. Ž<P>SOLUTION: This parking brake device of a tractor-trailer combination vehicle includes a standard chamber 14 for actuating a service brake of a trailer, a trailer control valve 12 for gradually reducing a pressure of compressed air supplied to the standard chamber 14 from an air reservoir 10 together with increase of a control pressure supplied to a control port 12A, and a limiting quick release valve 20 for supplying the compressed air stored in the air reservoir 10 to the control port 12A of the trailer control valve 12 as it is when a hand control valve 22 is switched to a traveling position, and supplying the compressed air stored in the air reservoir 10 to the control port 12A of the trailer control valve 12 while a pressure is being reduced at a predetermined decompression rate when the hand control valve 22 is switched to a parking position. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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