Author:Ruby     Posted in:2014-8-19

The development of hositing machine has a long history.

10 years B.C,the Roman architect,called Victo Lu Weiss,describes a hoisting mahcine in its construction manual.There are a masts,the peak of which is a pulley,and a winch at the position of masts fixed to lift heavy weights.Some hoisting machine has two masts crossing a herringbone,which can lift good to lateral movement.But,the disadvantage are the amplitude smally and operation hardly.

In 15th century,as Italian invented the jib type crane,this problem is resolved.This crane equipted with a jib,top of which is a pulley, not only can lift,but also rotate.It was not until the 18th century,all kinds of crane used by human are based on the power of human or animals.There is limit in lifting capacity,using area and working efficiency.

In mid and late 18th century,the British Watt improved and invented the steam engine,which provides the dynamic conditions for hoisting machinery.In 1805,the Greenland engineers Lennie built the first steam crane for the London dock.In 1846,the British Armstrong put Newcastle dock a steam crane instead of hydraulic crane.

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