Crawler bulldozer is a kind of earth-moving machinery capable of excavating, transporting and disposing of rock and soil. It has a wide range of uses in open-pit mines. For example, it is used to build dumps, level automobile dumps, pile up scattered ore, level work flats and construction sites. It is also used for auxiliary work and also for main mining work. For example: stripping and mining of placer deposits, pulling and boosting of scrapers and rock ploughs, and cooperating with other earth-moving machinery to reduce the height of cutting steps when there is no transportation mining method.
The crawler crawler bulldozer (crawler tractor, also called crawler bulldozer) was successfully developed by American Benjamin Holt in 1904. It was formed by installing a human-lifting bulldozer in front of the crawler tractor. The power at that time was a steam engine. Later, the crawler-type crawler bulldozer driven by gasoline power and gasoline engine was successfully developed, and the bulldozer blade was also developed from manual lifting to wire rope lifting.
