Elevator for engineering and working method thereof

The invention relates to an engineering lifter and a working method thereof.The engineering lifter comprises a rack, the rack comprises a vertical lifting guide rail, a driving structure and a lifting platform, and a supporting assembly is arranged on the lifting platform. According to the supporting assembly, the long and thin object is placed in the annular supporting body of the supporting assembly, then the annular supporting body only needs to be converted from the compressed state to the unfolded state, and the long and thin object in the supporting assembly can be protected through the stability of the annular supporting body in the unfolded state so as to be prevented from inclining towards the two sides. In addition, when the supporting assembly is in the unfolded state, the annular supporting body at the top position can be fixedly connected to the guide rail on the side portion through a locking structure such as a fastener, and therefore stable supporting of the supporting assembly in the unfolded