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Sometimes, a bulldozer is used to push or pull another piece of earth-moving equipment known as a "scraper" to increase productivity. The towed Fresno Scraper , invented in 1883 by James Porteous , was the first design to enable this to be done economically, removing the soil from an area being cut and depositing where needed as fill .
Some examples of armoured civilian heavy equipment are the IDF Caterpillar D9, American D7 TPK, Canadian D6 armoured bulldozer, cranes, graders, excavators, and M35 2-1/2 ton cargo truck. Militarized heavy equipment may also take on the form of traditional civilian equipment designed and built to unique military specifications.
The M9 armored combat earthmover (ACE) is a highly mobile armored tracked vehicle that provides combat engineer support to frontline forces. Fielded by the United States Marine Corps, and the United States Army, its tasks include eliminating enemy obstacles, maintenance and repair of roads and supply routes, and construction of fighting positions.
The D575A-2 SD Super Dozer was the second version of the D575A, going into production alongside the D575A-2 SR Super Ripper beginning in 1995. [3] The D575A-2 SD Super Dozer is an 1,150 horsepower (860 kW), 143,300 kilograms (315,900 lb) dedicated dozer with no ripper. The D575A-2 SD Super Dozer was superseded by the D575A-3 SD Super Dozer.
The D9 is a series of heavy tracked-type tractors, carried on continuous tracks and usually used as bulldozers. The series began in 1954 with a prototype tractor called the D9X. Ten D9X prototype models were built in 1954. In 1955, the 286 hp (213 kW) D9 was introduced to compete against the more powerful Euclid TC-12.
It is also used to transport, deploy, and evacuate armored personnel carriers, self-propelled artillery, armored bulldozers, and other heavy vehicles and equipment. The current U.S. Army vehicle used in this role is an Oshkosh-built M1070 tractor unit in A0 and A1 configurations which is coupled to a DRS Technologies M1000 semi-trailer. [1]
CAT D10N at work in Rishon LeZion, Israel. Among modern tractors, the High Drive (elevated sprocket) design was unique to Caterpillar products. The concept originated in 1914 with Caterpillar predecessor C. L. Best Tractor's 30 Humpback; [citation needed] this tractor was discontinued a year later, and the only other tractor to use the concept until the D10's introduction was the Cletrac Model ...
Heavy equipment usually comprises five equipment systems: the implement, traction, structure, power train, and control/information. Heavy equipment has been used since at least the 1st century BC, when the ancient Roman engineer Vitruvius described a crane powered by human or animal labor in De architectura.
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