| 摘要 |
A four wheeled vehicle supporting a ground probing radar antenna 52 has an aluminium alloy square plate 10 and four wheel mountings 14 supported by four pairs of equal-length arms 18,20. The arms as seen in plan are arranged in a square. One arm 18 in any pair extends lengthwise of the vehicle from an anchorage 30 on the vehicle to a mounting 14 and the other 20 extends transversely of the vehicle from an anchorage 32 on the vehicle to the mounting 14. Each mounting carries a buffer 36 which on upward movement presses against one of two spring arms 38 carried by mountings 42, one arm being locked in its mounting. The vehicle has an overcover 70 and an undercover 72. In a modification pneumatic spring units instead of arms 38 control vertical wheel motion.
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