The most widely documented use is the Israeli Defence Forces' (IDF) militarized Caterpillar D9, for earth moving, clearing terrain obstacles, opening routes, and detonating explosive charges. Dozer blades may be mounted on main battle tanks to clear antitank obstacles or mines, and dig improvised shelters.Īn armored IDF Caterpillar D9 bulldozer used by Israel Defense Forcesīulldozers employed for combat-engineering roles are often fitted with armor to protect the driver from firearms and debris, enabling bulldozers to operate in combat zones. Dozer blades with a reinforced center section for pushing are known as "bull blades".ĭozer blades are added to combat engineering vehicles and other military equipment, such as artillery tractors such as the Type 73 or M8 Tractor, to clear battlefield obstacles and prepare firing positions. 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. ![]() Sometimes, a bulldozer is used to push or pull another piece of earth-moving equipment known as a " scraper" to increase productivity. All can be lifted, some, with additional hydraulic cylinders, can be tilted to vary the angle up to one side. It is typically used for pushing large rocks, as at a quarry.īlades can be fitted straight across the frame, or at an angle.
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