Bulldozer

The term "bulldozer, refers to a tracked tractor fitted with a dozer blade. It is a heavy, driver-operated machine for clearing and grading lands. The tracks gives bulldozer excellent ground hold and mobility through very rough terrain. Came into existence in early 20th century it has now undergone many modifications suiting to the requirements of the big infrastructural projects.

Mechanical Operations
Tractor, blade and rippers are the main parts of the bulldozer. Tractor is controlled by control joystick, monitor panel, and pedals. Through blade it shaves the uneven ground and carries the shaven soil along with it. While shaving, it levels and tighten the ground with its own weight. Ripper on the other hand scratches the ground. Ripper can shave big rocks and hard grounds also which the blade is unable to do. Depending on the nature of the work dozer blades comes in three varieties :

• Straight Blade
• Universal Blade
• Combination of straight and universal blade.

Applications
Bulldozer is the primary machinery for doing major construction works. The size, weight and the technology used by it has made it applicable for various fields which can be summed as :

• Land leveling
• Digging of canals
• Raising earth dams
• Scaling of the construction sites
• Mining industry
• Road construction
• Military bases
• Heavy industries
• Large governmental projects