A cabin and a boom are installed above the cage, after which the climber is used. Above it, a team of experts installs the first section of the tower, around which a cage called the 'climber' is equipped. But engineers came up with an elegant solution, the construction of buildings begins with the manufacture of cranes, which are erected in the immediate vicinity of the future structure.įirst, the hoist's foundation is laid in the form of massive concrete slabs. After these and other parts are manufactured, they need to be put together, which seems an insoluble problem due to the size of the future mechanism. A massive screw or slewing ring helps the crane rotate around its axis. The boom is equipped with a huge ballast in terms of its size and power, which allow the crane to remain stable. The tower is made of four racks fixed with diagonal beams. It should be also noted that when creating cranes of all types, rolled sections are also used, such as angles, channels and beams. They are loaded into a huge machine that systematically cuts the main components of the crane. The life of every hoist begins with the steel for the manufacture of cranes: massive metal plates. Of course, this impression is wrong, because one of the stages of building a tower crane involves laying a solid foundation. Their elongated bodies with boom-shaped arms resemble giant puppets that seem likely to collapse under the slightest breeze. The giant figures of tower cranes have become, it would seem, an obligatory attribute of every city. Huge tower mechanisms, with which modern builders erect futuristic skyscrapers, small cantilever cranes for operation in workshops, floating cranes, essential in the oil industry. The variety of shapes and sizes of modern cranes is directly related to their application. With the Industrial Revolution, wooden mechanisms were replaced with metal for the manufacture of cranes: cast iron, iron, and finally steel. Because it's perfect!'įor centuries, cranes were made of wood. According to science, this mechanism was not used in any of the cultures before the Greeks, but after, for almost 25 centuries, the crane was the main technology in construction.

The scientist doles out the compliments: 'The lift crane is one of the main technological inventions of ancient Greek civilisation. to lower them onto their exact place in the wall.

Studying the ruins of the Greek Isthmia and Corinth, Pierattini found that, during construction, ancient builders used a specific combination of ropes and levers, a mechanism with which they were able to lift stone blocks. However, last summer, University of Notre Dame Assistant Professor of Architecture Alessandro Pierattini made the startling statement that, apparently, cranes began their victory march across the world's construction sites much earlier, from 700BC to 650 BC. Until recently, it was believed that the building crane was invented and used by Greek architects beginning in 515 BC.

Movealong crabe components