Terex Tower Cranes
Early Crane Evolution
More than 4000 years ago, early Egyptians created the very first recorded kind of a crane. The original apparatus was referred to as a shaduf and was initially utilized to transport water. The crane was made out of a long pivoting beam that balanced on a vertical support. On one end a bucket was connected and on the other end of the beam, a heavy weight was attached.
Cranes that were built during the first century were powered by animals or by humans that were moving on a wheel or a treadmill. The crane consisted of a wooden long beam which was known as a boom. The boom was attached to a base which rotates. The wheel or the treadmill was a power-driven operation which had a drum with a rope that wrapped around it. This rope also had a hook that was connected to a pulley at the top of the boom and carried the weight.
Cranes were utilized extensively throughout the Middle Ages to build the enormous cathedrals in Europe. These devices were also used to load and unload ships within major ports. Eventually, major developments in crane design evolved. For example, a horizontal boom was added to and was referred to as the jib. This boom addition enabled cranes to have the ability to pivot, thus really increasing the machine's range of motion. Following the 16th century, each side of a rotating housing which held the boom incorporated two treadmills.
Cranes utilized animals and humans for power until the mid-19th century. This all changes rapidly when steam engines were developed. At the turn of the century, Internal combustion or IC engines as well as electric motors emerged. Moreover, cranes became designed out of steel and cast iron rather than wood. The new designs proved longer lasting and more efficient. They can obviously run longer as well with their new power sources and therefore complete bigger tasks in less time.
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