L68B2 Mast Section Tower crane installation process
1. Preparations before installation
A. understand the site layout and soil conditions, and clean up the surrounding obstacles.
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B. determine the parking position of the crane according to the layout of the building.
C. prepare for lifting mechanical sleepers, wooden wedges and sufficient lead wires, sleepers, lifting steel wire ropes, rope buckles and other common tools.
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2. Installation of underframe
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A. fasten the underframe on the foundation and level it with anchor bolt pressing plate, etc.
B. install the standard section. The hoisting standard section is on the underframe (pay attention to the direction of the climbing claw is parallel to the building).
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Connect the standard section and the base of the underframe with high-strength bolts (each set of high-strength bolts is one bolt, two washers and two nuts). Lift and connect another standard section to the lower standard section. The pre tightening force of high-strength bolt is 35.5t, and the pre tightening torque is 2000N. M. Measure the perpendicularity of the installed two standard sections to the underframe plane。
