美国的海军工程师们,正在研制一种自动操纵的全向汽车。当试验完全成功时,这种汽车能在一艘航空母舰的大型甲板上,方便自如地搬运重型物体,其基本原理是车轮的设计能使汽车向任何方向移动且不滑动。 这项新的车轮设计,早在70年代初曾首创于瑞典,即在每个车轮轮毂四周,都安装了6个自由转动的锥形辊轴。随着1只车轮转动,辊轴 U.S. naval engineers are working on a fully automated steering car. When the test was completely successful, the car was able to carry heavy objects easily and comfortably on a large deck of an aircraft carrier. The rationale was that the wheel was designed to allow the car to move in any direction without slippage. The new wheel design, pioneered in Sweden as early as the early 1970s, installed six free-wheeling conical rollers around each wheel hub. With one wheel turning, the roller shaft