The life and work of most people in no way is connected with the construction. However, with the word crane, we clearly imagine a large construction with an indispensable upsurge. Of course, people are well aware that any construction cannot do without this lifting mechanism. And sometimes the most curious, most often children, are wondering how builders without a crane did before. After all, from the lessons of history, we know about the grandiose buildings of antiquity.
Naturally, in ancient times there were also various devices, with the help of which work was carried out to raise cargo to height. As the researchers suggest, the first lifting mechanisms were a system of levers, rollers and an inclined plane. Later, the rope was included in this design, and it was their plexus that became an analogue of the current cables and steel ropes. This design was installed on the wall erected, raising it higher.
Ancient Greek builders have significantly improved this mechanism, connecting several ropes or ropes into its work. Such a system greatly simplified the lift of ores from mines, and other construction work, as this reduced the need for muscular force. After all improvements and thanks to the use of electricity, we now have electric tali. By the way, this lifting mechanism currently has the widest application, however, to a lesser extent in construction.
Electric tali is most used for work under a canopy, or in premises, for example, in factory workshops. Modern electric waists have a lot of advantages. This is a compact device where, practically, all the components of the elements are mounted in one case. Tal moves along the monorail track, and for control they are equipped with a suspension remote control, so that all control is made from the floor. Thus, one employee carries a large amount of cargo using only pressing several buttons on the remote control. Therefore, now without electric tali it is impossible to imagine normal work in the workshops of factories, and in large warehouses.