目前市场上平板拖车的回转形式大都采用单轴式回转(只有一个回转轴),此平板车拖的优点:结构简单,制造成本低。但缺点也是显而易见的:转弯半径大,轮胎磨损速度较快(特别是大吨位平板拖车)。双向四轴线式平板拖车克服了此类平板拖车的缺点,具有如下优点:(1)转弯半径小;(2)所有轮胎都在误差允许范围内做近似纯滚动,减小轮胎磨损;(3)整车的同辙性好,弯道通过性好,等。 Currently on the market flatbed trailer rotary form mostly single-axis rotary (only a rotary axis), the advantages of this flatbed tow: simple structure, low manufacturing costs. But the downside is also obvious: large turning radius, faster tire wear (especially large tonnage flatbed trailer). Two-way four-axis flatbed trailer to overcome the shortcomings of such flatbed trailer, has the following advantages: (1) small turning radius; (2) all tires in the error range allowed to do almost pure rolling, reducing tire wear; (3) Vehicle with the same rutting, curved through the sex, and so on.