Lifting machinery can also be called lifting equipment, industrial, transportation, construction enterprises to achieve the mechanization and automation of the production process, reduce heavy manual labor, improve labor productivity of important tools and equipment, in Our country has a large number of all kinds of lifting equipment. Although the number of lifting equipment used in university laboratories is not large, the lifting tonnage is not large, but because of the low frequency of use of lifting equipment, its maintenance and safe operation is more important.