ISO 7451:2007规定了一种估算液压挖掘机或反铲装载机的锄头式或抓斗式铲斗通常能容纳的物料量的方法。体积评估基于铲斗的内部尺寸和铲斗顶部的代表性体积。 该方法采用将桶中物料的复杂形状划分为简单几何形状的技术。 这种评估方法旨在提供一种比较铲斗容量的常规方法。它不用于定义真正的容量。

ISO 7451:2007 specifies a method for estimating the volume of materials which a hoe-type or grab-type bucket of a hydraulic excavator or backhoe loader can normally contain. The volume assessments are based on the internal dimensions of the bucket and on the representative volumes at the top of the bucket. The method employs the technique of dividing the complex shape of the material in the bucket into simple geometric shapes. This method of assessment is intended to provide a conventional means of comparing bucket capacities. It is not intended to be used to define true capacities.