A construction crane is generally a
lifting machine that works with a set of pulleys and cables. For the
construction industry, the construction crane is a valuable asset
because it is capable of lifting heavy weight loads and different
kinds of materials. The modern day construction cranes are big in
size, have different lifting capacities and can reach hundreds of
meters in height. For example, for the construction of a skyscraper,
usually a tower crane is used that can reach heights up to 800
meters. The construction crane uses pulleys and cable system for
creating a mechanical advantage which is vital for lifting heavy
loads and materials. The winders, ropes, cables, and the basic level
pulley system are the main parts of any construction crane. There are
different construction crane models on the market, and each one is
used for a specific lifting task. The most popular construction
cranes are the tower cranes, vehicle mounted cranes, rough terrain
cranes, crawler cranes, aerial cranes and other crane types.
Tower crane
This construction crane is
generally used for the construction of big-sized structures, such as
skyscrapers, bridges, water dams etc. The tower crane was originally
developed and designed in Europe, and today it is widely used all
over the world. This construction crane can reach heights up to
several hundred meters,
and have lifting capacity of 20 tons. The
tower cranes are mounted on the ground during the construction
process. A strong concrete pads are used for holding the crane stable
during the lifting operations.
Vehicle Mounted Crane
Because the
cranes that are used on the construction sites are generally mounted
on the ground, some projects require a construction crane that can be
easily moved from one location to another. The vehicle mounted crane,
as the name suggest, is a crane attached on a special vehicle for
easy movements around the job site. These construction cranes are
very popular because they can travel on highways and other major
regional roads. Therefore, no additional equipment is needed when the
crane needs to be transported from one location to another. For
increased stability, this construction crane uses outriggers when
lifting heavy loads.
Rough Terrain Crane
The rough terrain
crane is another construction crane that is mounted on a
undercarriage with rubber tires. It is designed especially to be used
for off road applications and other job sites with limited access.
Crawler Crane
The crawler crane is a
type of mobile crane that is mounted on a chassis with tracks instead
of rubber tires. Unlike the rough terrain crane, this construction
crane don't use outriggers for stability, and has lifting capacity
ranging from 35 to 3500 tons. Although it is a mobile crane, the
crawler crane needs to be dismantled into smaller pieces when need to
be transported from one location to another.
Aerial Crane
This construction crane
is also known as sky crane because it is generally a helicopter that
is capable to lift and move heavy loads or construction materials.
These cranes are generally used when other crane models are not
suitable for work.
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