Trade.Information

Details of Ascensori rotary

For how much already in III the century a.C. they were in use elevators and freight elevators primiti to you set in action to you manually, with the aid of animals or to means of norie, as it can be stated in the reperti of the Colosseo or the history of the Reggia of Caserta, odierno the elevator is one conquest of XIX the century. The first types of elevator were, in kind, command by means of one machine to you to vapor, directly or to means of a hydraulic commando.

To the beginning of XIX the century, in Europe the use of hydraulic ascensori for industrial employment is diffused. In these systems, the cabin was mounted on a piston in steel that finished in an embedded cylinder to the ground. The water came pushed in the cylinder in conditions of high pressure and caught up the piston, provoking the raising of the cabin, than then it came down for effect of the gravity. In we, today, the word ' ascensore' evokes ascensori palaces, pianerottoli but the today they make very more. As an example they raise boats, ships or they serve for the city transport.

The larger elevator for ships of the world is found to Strépy-Thieu, in 30 western Belgium and has been inaugurated past August. The weight of the bridge is of 300.000 tons (tour the hung Eiffel 7000 tons), the thickness of the varied reinforced concrete from 2 m., to the periphery, 3,8 in the tower centers them. It can raise for 73,15 m. barges until 2000 long 112 m., wide tons 12 m. with a draught of 4,15 m.; in order to make this it uses 144 cables of which solos 32 with motor. The raising speed is of 20 cm/sec.

An other example of elevator for ships is Falkir-Wheel that connects the Union canal to the Forth & Clyde canal, in Scozia, between Edimburgo and Glasgow, concurring navigation between the Atlantic and the North Sea. The elevator is moved from a pump that sets in action 10 hydraulic motors connects you to a system of 3 bearings in correspondence of the three holes, everyone has a diameter of 4 m and contains three series of rotary cylinders that they make it sopportare the cargo in all the directions. Of the three rings that compose it one it is a wheel bite that allows to transmit the movement. A system of sensors allows that the level of the 37,5 water does not oscillate or less i more milimeter; in order to move a structure of 1800 tons 20 are sufficient Kw. The elevator is constructed with 7000 m3 of concrete and 2000 of steel.