苏联明伏特赫茨,开始广泛推荐一种带有活动底部的铲运机,铲运斗容量加大到10m~3,可提高生产率30～35％,而不需增加牵引机械的拖力。目前又制造一种构造独特并加大斗容量的铲运斗,利用斜铲土壤的原理,以减少铲运斗满载所需要的牵引力。这种铲运机与普通铲运机不同,刀片不与运动方向垂直,而是成W形(图1)。 The Soviet Union’s Ming Vethetz began to widely recommend a scraper with movable bottom. The capacity of the shovel bucket is increased to 10m~3, which can increase the productivity by 30 to 35% without increasing the drag force of the traction machinery. At present, a shovel bucket with a unique structure and a large bucket capacity is also manufactured, and the principle of the shovel shovel soil is utilized to reduce the traction required for the full load of the bucket bucket. This type of scraper is different from ordinary scrapers in that the blades are not perpendicular to the direction of movement, but are shaped like a W (Figure 1).