The Exciting World of Bulldozers

Learning some basics

about Crawlers &



Lucy Bartlett

Powerful crawler equipment with a blade is called a bulldozer.
Even though any heavy engineering vehicle is known by the term
“bulldozer”, practically the term refers only to a tractor with
dozer blade.

Earlier tractors were used to plough the fields and the first
bulldozer was adapted from this tractor. During the First World
War a bulldozer was used as an armored tank because of its
versatility in grounds which were soft.

A big thick metal plate is fixed on the front of the bulldozers
for use in earthmoving jobs, raising dams and digging canals. As
the tractor advances, the blade in front removes layers of soil.
To move coal in the coalmines, to move large boulders or cut
tree stumps, various specialized blades are used. Earlier, the
driver used to sit on top of the bulldozers, which lacked a
cabin. When powered down bulldozers were introduced in the
1930’s it became the excavation equipment preferred by
contractors. Find more info at

When equipment was needed to execute large-scale earth works,
several bigger models were manufactured by various engineering
firms. These machines were noisy, large and powerful and that’s
where it got its name “bulldozer”.

More powerful engines, better tracks, more reliable drive
tracks, raised cabins and instead of the usual cable
operations, hydraulic arms were some of the important
improvements included in the bulldozer development.

More precise blade manipulation was made possible by hydraulic
systems. To loosen soils which were rocky, or for pavement
bread-up, a ripper claw was also added to bulldozers.

Throughout the world, these durable and tough machines are used
by construction units of the military, they are also the
preferred equipment for civil construction. Some of the other
uses of bulldozers include demolition of enemy structures and
clearing mines.

The tracks on the bulldozers give good hold on ground and easy
mobility over rough terrain. In order to prevent it sinking in
muddy or sandy ground, the wide tracks help the distribution of
the weight of the bulldozer over large area. The torque divider
in the bulldozer converts its power into ability to drag.

The power of the bulldozer can be gauged by its ability to tow
tanks weighing around seventy tons. Areas of obstacles such as
shrubbery, and burnt vehicles can be cleared easily.

Over time, bulldozers have been further modified to become a
new machine capable of working in various ways which was not
possible with the original bulldozer, for instance a hydraulic
arm and a large bucket, which can be raised or lowered to scoop
earth and load it into trucks.

About The Author: Lucy Bartlett is a proud contributing author.
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