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来源:百度知道 编辑:UC知道 时间:2024/05/15 14:26:45

Crane
In a certain range of vertical lifting and carrying heavy loads more action level of lifting appliances. Or the cable car. Belong material handling machinery. Crane's work is characterized by intermittent movement so that the work cycle in a reclaimer, migration, Unloading such action is the turn of the corresponding bodies.

Ancient Chinese Irrigation ? the orange-boom crane is the prototype. 14th century, human and animal resources in Western Europe driven by a rotating crane jib type. The early 19th century, a bridge crane; crane worn as a major axis, Sling Gear and other manufacturers started using metal materials, and began using hydraulic drive. The late 19th century, steam-driven crane driven by the gradual replacement of the hydraulic crane. 20 era of the 20th century, due to rapid industrial development of internal combustion engine and electric industries. engine for electrical power plants or the crane shape.

Including crane hoisting