同样采用ISO 7457:1997，其中规定了轮式土方机械及其设备和附件在转弯时水平平面图中描述的转弯半径、转弯直径、机器间隙直径以及内外轮胎间隙直径的确定方法。本文件适用于所有类型的可转向轮式土方机械。无论使用哪种类型的转向，它都适用。关键词:土方机械；车削尺寸；轮式机器

Identically adopts ISO 7457:1997, which specifies methods for determining the turning radius, turning diameter, machine clearance diameter, and inside and outside tyre clearance diameters, described in the horizontal plan by a wheeled earth-moving machine with its equipment and attachments when executing a turn. This document is applicable to all types of steerable wheeled earth-moving machinery. It is applicable irrespective of the type of steering used.KEYWORDS: Earth-moving machinery; Turning dimensions; Wheeled machines