Hoisting of high-rise derrick mast

Precautions for high-rise derrick mast hoisting:

1. Do not lift if the load is overloaded or the weight of the lifted object is unclear;

2. Do not lift if the command signal is not clear;

3. Unstable or unbalanced binding and hanging may cause sliding and no lifting;

4. Do not lift when there are people or floating objects on the lifted object;

5. Do not hoist when the structure or parts have defects or damages that affect safe operation;

6. Do not lift embedded objects with unclear tension;

7. Do not lift when the workplace is dim and the site, the object to be lifted and the command signal cannot be seen clearly;

8. Do not lift when there is no pad between the edges and corners of the object to be lifted and the binding wire;

9. Do not lift the load when it is pulled askew;

10. The crane safety device is incomplete, and the crane will not be lifted if it is not reliable;

11. Local operation is not allowed if there are high-voltage lines;

12. Operation cannot be carried out in rainy and windy days.