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2018 Skyjack SJ1056 Image
Stock Number: EQC012374
Make: Skyjack
Model: SJ1056
Year: 2018
2018 Skyjack SJ1056 Details
2015 Terex CTT 121A-5 TS16 Image
Stock Number: 600017
Make: Terex
Model: CTT 121A-5 TS16
Year: 2015
2015 Terex CTT 121A-5 TS16 Details
2007 Potain HDT80 Image
Stock Number: 600194
Make: Potain
Model: HDT80
Year: 2007
2007 Potain HDT80 Details
2013 Hyundai 110D-7E Image
Stock Number: EQU010604
Make: Hyundai
Model: 110D-7E
Year: 2013
2013 Hyundai 110D-7E Details
2012 Miller Big Blue 400D Image
Stock Number: 231276
Make: Miller
Model: Big Blue 400D
Year: 2012
2012 Miller Big Blue 400D Details
2008 Combilift C12000SL Image
Stock Number: EQU008108
Make: Combilift
Model: C12000SL
Year: 2008
2008 Combilift C12000SL Details
 
Terex Tower Cranes

Terex Tower Cranes

Early Crane Evolution
The very first recorded concept or type of a crane was used by the early Egyptians over 4000 years ago. This apparatus was referred to as a shaduf and was used to transport water. The crane was made out of a long pivoting beam which 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 in the first century were powered by humans or by animals that were moving on a wheel or a treadmill. The crane consisted of a wooden long beam that was called a boom. The boom was attached to a base that 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 which lifted the weight and was attached to a pulley at the top of the boom.

Cranes were used extensively throughout the Middle Ages to make the enormous cathedrals in Europe. These devices were also designed to unload and load ships within major ports. Over time, major developments in crane design evolved. For example, a horizontal boom was added to and became known as the jib. This boom addition allowed cranes to have the ability to pivot, therefore really increasing the range of motion for the machinery. Following the 16th century, cranes had incorporated two treadmills on each side of a rotating housing which held the boom.

Cranes used 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, electric motors as well as IC or internal combustion engines emerged. Cranes also became designed out of cast iron and steel as opposed to wood. The new designs proved longer lasting and more efficient. They could obviously run longer also with their new power sources and therefore carry out bigger tasks in less time.

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