L68B2 Mast Section Safety precautions in tower crane lifting operations
safety precautions in tower crane lifting operations 1 for the safety of tower crane lifting operations, the tower crane lifting should be under unified command, jack-up operation to be through the project department of Yang Lixin, Yu Baolan, Li Ping, the original vibration of four people at the same time signed approval, led by Yang Lixin jack-up. Check whether the hydraulic oil and hydraulic system is clean, no dust, powder, metal debris and other impurities. The maximum value of the hydraulic pressure gauge shall not exceed the allowable value. 4 check the clearance between the roller and the tower before jacking up, then relax the cable, its length is slightly larger than the height of jacking up. 5 lift operation must have a dedicated command, non-operational personnel shall not on the tower crane. 6 when lifting, must maintain a balanced state, strictly prohibited turning. At the end of the jack-up, the bolt must be lowered to the original position and fixed. 8 No jacking shall be carried out when the wind force is above grade 4.
L68B2 Mast Section
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