The lifting technology has a long history in our country, such as the construction of the Forbidden City and the Great Wall, the huge cast bells of the ancient clock tower in the past, and the transportation and lifting of hundreds of tons of statues, all of which have condensed the wisdom of the working people in our country. my country's modern starting technology has started late. After the efforts of the majority of science and technology workers and engineering and technical personnel, it has developed greatly. In terms of hanging process and methods, the majority of builders have created many excellent overall crane craft methods, completed a large number of hanging projects, and intelligent control and operation technology have begun to be applied in my country. During the structure, the coordination between multiple continuous hydraulic jacks adopts computer control technology. In recent decades, there have been many types of cranes in my country that have created and perfect hanging methods according to local conditions. The lifting method, multiple cranes combined with the lifting method, translation method, etc. The cable has a history of more than two hundred years in Western countries. The wire rope sleess is crushed. The earliest development was the German Alliance Republic at the time. This technology was mainly used in the aviation industry at that time. Later, some developed countries in Europe and Asia introduced German technology and formed their own national standards. In China, it is known that it has only been widely used and developed in the late last century. In the 1970s, my country's steel wire rope cranes were basically followed by backward artificial insertions and steel wire rope clamping methods. There were no professional factories that produced hangers. They were all processed by the enterprise. And detection methods to control product quality. In the 1980s, the Sifang locomotive and vehicle factory of the Ministry of Railways absorbed advanced foreign technology and technologies, and developed mechanical suppression of the steel cover.
