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A working bulldozer from the, on, Hainan, China. A bulldozer is a ( ) equipped with a substantial metal plate (known as a ) used to push large quantities of, sand, rubble, or other such material during or conversion work and typically equipped at the rear with a claw-like device (known as a ) to loosen densely compacted materials. Bulldozers can be found on a wide range of sites, and, military bases, factories, engineering projects and. The term 'bulldozer' correctly refers only to a tractor (usually tracked) fitted with a dozer blade.
A N bulldozer equipped with a single shank ripper. 
Typically, bulldozers are large and powerful tracked heavy equipment. The tracks give them excellent ground holding capability and mobility through very rough terrain.
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Wide tracks help distribute the bulldozer's weight over a large area (decreasing ), thus preventing it from sinking in or ground. Extra wide tracks are known as swamp tracks or LGP (low ground pressure) tracks. Bulldozers have transmission systems designed to take advantage of the track system and provide excellent. Because of these attributes, bulldozers are often used in,,,,, infrastructure development, and any other projects requiring highly mobile, powerful, and stable earth-moving equipment. Another type of bulldozer is the wheeled bulldozer, which generally has four wheels driven by a 4-wheel-drive system and has a hydraulic, system. The blade is mounted forward of the articulation joint, and is hydraulically actuated. The bulldozer's primary tools are the blade and the ripper.
The word 'bulldozer' is sometimes used inaccurately for other similar construction vehicles such as a large. Komatsu bulldozer pushing up to 7m 3 with semi-U tilt dozer The bulldozer is a heavy metal plate on the front of the tractor, used to push objects, and shove, soil,, and sometimes. Dozer blades usually come in three varieties: • A straight blade ('S blade') which is short and has no lateral curve and no side wings and can be used for fine grading. • A universal blade ('U blade') which is tall and very curved, and has large side wings to carry more material.
• An 'S-U' (semi-U) combination blade which is shorter, has less curvature, and smaller side wings. This blade is typically used for pushing piles of large rocks, such as at a quarry. Blades can be fitted straight across the frame, or at an angle, sometimes using additional 'tilt cylinders' to vary the angle while moving. The bottom edge of the blade can be sharpened, e.g.
To cut tree stumps. Sometimes a bulldozer is used to push another piece of earth moving equipment known as a '.
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The towed, invented in 1883 by, was the first design to enable this to be done economically, removing the soil from the and depositing it elsewhere on shallow ground ( fill). Many dozer blades have a reinforced center section with this purpose in mind, and are called 'bull blades'. In military use, dozer blades are fixed on and can optionally be fitted on other vehicles, such as such as the. Dozer blades can also be mounted on, where it can be used to clear antitank obstacles, mines, and dig improvised shelters.
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Combat applications for dozer blades include clearing battlefield obstacles and preparing fire positions. Multi-shank ripper The ripper is the long claw-like device on the back of the bulldozer. Rippers can come as a single (single shank/giant ripper) or in groups of two or more (multi shank rippers). Usually, a single shank is preferred for heavy ripping.
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The ripper shank is fitted with a replaceable tip, referred to as a 'boot'. Ripping rock breaks the ground surface rock or pavement into small rubble easy to handle and transport, which can then be removed so grading can take place. With agricultural ripping, a farmer breaks up rocky or very hard earth (such as hardpan), which is otherwise unploughable, in order to farm it. For example, much of the best land in the wine country consists of old flows.