履带式自行铲运机与轮式铲运机相比,尽管它的接地比压低、附着牵引力大、作业场地适应性强,但铲运斗宽度受履带总成限制,斗容量较小。履带半挂式自行铲运机的铲运斗宽度则不受履带总成宽度的限制,可以发挥履带铲运机的长处。这种机型有单发动和双发动机两种型式。本文介绍双发动机履带半挂式自行铲运机。 Compared with the wheel scraper, crawler type self-powered scrapers have a low grounding ratio, a large traction force, and a strong adaptability to the work site. However, the width of the bucket is limited by the track assembly and the bucket capacity is small. The width of the bucket of the crawler semi-mounted self-scraper is not limited by the width of the crawler assembly, and can exert the advantages of the crawler scraper. This model has a single launch and dual engine two types. This article describes the double-engine crawler semi-mounted self-propelled scraper.