| 摘要 |
PROBLEM TO BE SOLVED: To provide a leveling valve capable of restricting repetition of unnecessarily supplying and discharging compressed air to/from an air spring by a simple configuration. SOLUTION: This leveling valve 14 comprises a lever 17 rotated in compliance with a variation in height between a frame 11 into which the air spring 13 is installed and an axle 12, a crank 21 having the same rotational center as that of the lever 17 to supply and discharge compressed air selectively against the air spring 13 in compliance with its rotation toward one direction and the other direction, and a torsion spring 22 coaxially arranged at the rotating centers of the lever 17 and the crank 21 to connect these lever 17 and crank 21 in such a way that they can be rotated to each other. COPYRIGHT: (C)2006,JPO&NCIPI
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