& nbsp; crane plays a very important role in all aspects of our life in this era of rapid industrialization. Especially in the construction industry, it has solved our past manpower work and accomplished tasks that could not be accomplished in the past.

& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; recalling the past construction, people only built high-rise houses through artificial wooden ladders. However, because the height of artificial wooden ladder is stipulated, too high will pose a threat to the safety of construction personnel. Since the crane came into being, cranes have to be used in every building construction. With modern crane height adjustable, no matter how high the building is, it will not bring safety hazards to the construction personnel.

& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; therefore, the crane in the modern construction industry has played an improved role in material handling, and has reached the level of automation and mechanization of production. Cranes make great contributions to human production and progress everywhere.