Analysis of operation methods of slings in small underground spaces

Basement equipment is usually hoisted directly to the floor through the lifting port using a truck crane, and then transported to the installation location via a flat surface, and directly transported to the basement using a car ramp; equipment above the ground is hoisted into the floor using construction lifts, boom cranes, and truck cranes. , during the actual construction process, if you encounter a very unfavorable situation, you can also consider using the following methods:

(1) In relatively low areas, the 500-ton truck crane type currently on the market can be used for hoisting. Generally, the lifting height can reach 100 meters. Of course, it needs to be specifically determined based on the actual situation on site and the quality of the equipment.

(2) Use traditionalslingHoisting method: mast crane such as one-legged mast, herringbone mast, cable-type mast lifting, etc.This method is not height restricted.Mast crane, the mast is segmented and assembled, which solves the problem of transportation and installation.When hoisting, set up guide ropes to effectively control the shaking of the equipment in the air.

(3) In some special situations, such as the hoisting of equipment on the top floor of a covered factory building, because the car lifting rod cannot be extended to the lifting height, a double-machine lifting steel platform process needs to be used to swim into the equipment.When analyzing the working conditions of the crane when lifting with two machines, the rated load of the crane should be taken as a factor of 80%.