| Bulldozer History | | | | maker, and success off the assembly line in 1931, the |
| Crawler Bulldozer (track-type tractor, also called | | | | first with a diesel engine, 60 bulldozers. As technology |
| crawler dozer) is by an American Benjamin Holt in | | | | advances, the current momentum bulldozers have |
| 1904, successfully developed, which is installed in the | | | | been used in all diesel engines, earth moving shovel |
| track-type tractor in front of manpower to enhance | | | | knife and loosen the soil by a hydraulic cylinder to |
| the formation of the earth-moving equipment was the | | | | upgrade all devices. In addition to track-type tractor |
| driving force is the steam engine, has followed the | | | | bulldozer, there are tire-type bulldozer, its appearance |
| successful development of power-driven by natural | | | | a decade later than the track-type tractor around. |
| gas, and gasoline engine-powered track-type tractors, | | | | |
| bulldozers Blade also enhance the development of | | | | The three bulldozer manufacturers, representing the |
| wire rope from a manpower increase. Benjamin Holt is | | | | world's highest level of track-type bulldozer. Several |
| also the U.S. Caterpillar (Caterpillar Inc.) Co-founder in | | | | other foreign bulldozer manufacturer John Deere, |
| 1925 5Holt manufacturing company and CL, Best | | | | Case, New Holland and Deruisita, its relatively high level |
| Tractor Co. merge to form Caterpillar Tractor Co. to | | | | of production technology. |
| become the world's first earth-moving equipment | | | | |