Development of Bulldozer

Mechanical Crawler Dozers by the Americans Benjamin Holt successfully developed in 1904, it was installed in front of human promotion crawler tractors earth-moving equipment to form, when the driving force is the steam engine, and later successfully developed from natural gas powered and gasoline-driven crawler dozer, dozer blade also enhance the development of rope from a manpower increase. It is also one of the founders Benjamin Holt Caterpillar (Caterpillar Inc.) Company, 1925 Holt Manufacturing Company and C.LBest Tractor Co. merged to form Caterpillar Tractor Co. to become the world's first Mechanical Bulldozer Supplier The manufacturer, and in 1931 the first batch of successful downline 60 bulldozer diesel engines.

As technology advances, the current high driven bulldozers power has been used in all diesel engines, dozer blade and ripper all lift by the hydraulic cylinder. In addition to crawler tractors bulldozers, there are tire-type tractors, it appears a decade later than the crawler tractor around. Since the track-type tractor has good adhesion properties, it can play a greater traction, so at home and abroad, the variety and quantity of their products far exceeds tire bulldozer. Internationally, Caterpillar is the world's largest construction machinery manufacturing company, the production of crawler tractors are large, medium and small total of nine series D3-D11, the largest D11RCD, diesel engine flywheel power of 634kw.