There are many types of fixed way, depending on the selection of derrick and the upper lifting point: for 6mm steel derricks and lifting point embedded bar welding; using the flat iron and lifting point Angle to M6 bolt connection; Angle is used as the boom and the upper lifting Angle steel connection, etc.

Derrick connection with dragon framework, according to the derrick material can be respectively adopt colligation, peg and nailed, such as flat iron and Angle steel bars with wooden keel available two wood screw.