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概述自从1888年Alton J.Shaw,在Miwaukee,城设计安装了第一台利用电动机驱动的桥式起重机以来,经过几十年之后其主要结构基本上没有什么变化,特别在传动方面,都是采用电动机驱动、齿轮减速和电气控制。在1926年,曾经有人在供病人使用的电梯上,采取液压传动取得成功,初步显示了液压传动的优越性。主要表现在可以无级变速、运动平稳、噪音小等几方面。到1938年,为了要设计简单紧凑和无级变速的桥式起重机,有人考虑在桥式起重机上利用液压传动,并进行了
Overview Alton J. Shaw, since 1888, designed and installed the first motorized overhead traveling crane in the city of Miwaukee, with little or no change in the main structure after decades, especially in the area of transmission Motor drive, gear reduction and electrical control. In 1926, some people used to take the hydraulic transmission on the elevator for patients to make a success, which initially showed the superiority of hydraulic transmission. The main performance can be continuously variable speed, smooth movement, noise and other aspects. By 1938, in order to design a bridge crane with a simple, compact and continuously variable speed, some people considered the hydraulic transmission on the overhead traveling crane and carried out