Japan Bulldozer

A bulldozer is a crawler outfitted with a competent metal plate (known as a blade) used to push a large amount of soil, sand, rubble, or other such material throughout construction or modification process and normally equipped at the rear with a claw-like device (known as a ripper) to loosen densely concrete materials. Bulldozers can be found on a wide range of sites like mines and quarries, military bases, heavy industry factories, engineering projects and farms. The term "bulldozer" properly submits only to a tractor built-in with a dozer blade. But the traditional definition has been modified with the constant changes in the times and technology, we have witnessed major modifications in the machine ever since its first use but the versatility has been increasing after every form of modification, the core of the machine although remains the same and would do so forever.

History: The first bulldozers were modified from Holt farm tractors that were used to plough fields, a young farmer named James Cummings and a draftsman named J. Earl McLeod made the first designs for the bulldozer since 1923. By the 1920s, tracked vehicles became common, mainly the Caterpillar 60, Rubber-tired vehicles used in 1940s. To dig canals, raise earth dams, a more new improvement is the outfitting of bulldozers with GPS technology such as produced by Topcon Positioning Systems. The Bulldozers contained the automatic transmission such as the early Euclid C-6 and TC-12 or Model C Tournadozer, blade movement controlled by hydraulic cylinders or electric motors cable winch/brake, and automatic grade control.

Description: Most often bulldozers are large and powerful tracked heavy equipment, Bulldozers have transmission systems designed to take advantage of the track system and provide the excellent tractive force. The bulldozer's primary tools are the blade and the ripper. Because of these properties, bulldozers are often used in road building, construction, mining, forestry, land clearing, infrastructure development, and any other projects needed 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, articulated steering system.

Blade: The bulldozer blade is a heavy metal plate on the front of the tractor, used to push objects, and shove sand, soil and refuse. Dozer blades usually come in 3 ways 1. A straight blade ("S blade") which is short and has no sided curve and no side wings and can be used for fine grading. 2. A universal blade ("U blade") which is tall and much curved, and has large side wings to carry more material. 3. An "S-U" (semi-U) mixture blade which is shorter has less arcuation and short side wings. This blade is normally used for pushing piles of large rocks, such as at a quarry.

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), the ripper shank is fitted with a changeable tungsten steel alloy tip. A stump buster is used to split a tree stump. A bulldozer with a stump buster is used for land clearing operations and probably has a brush rake blade.

Modifications: In an angle dozer the blade can be pushed forward at one end to make it easier to push material away to the side. The original earthmoving bulldozers are still irreplaceable as their tasks are concentrated in deforestation. The original bulldozer includes making it smaller to let it operate in small work areas where movement is limited, such as in mining and to be used in the city limits without any size issues. The modern bulldozers are not only modified to be more compact but the manufacturers are also focused on finding methods of making them compact yet extremely efficient and powerful.

The Japanese Touch to the giant !!: Major Japanese manufacturers dealing in a compact and advance bulldozers are KOMATSU {D65ex}, HITACHI {zw30}, MITSUBISHI. There many more Japanese manufacturers dealing in the best of its kind heavy/compact bulldozers.

Komatsu Bulldozer

Mitsubishi Bulldozer