L68A1 Mast SectionThe preparation of the tower crane's top lifting and adding section
the tower crane's top lifting and adding section is an important work in the use of the tower crane, is also a stage with frequent accidents. To ensure the smooth operation of the tower crane's lifting and jointing, we should make full preparations for the lifting and jointing work, and master the matters needing attention during and after the construction. The preparation work before the construction tower crane rises:
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(1) according to the request of heightening the construction tower crane body, prepare the standard section to be added, then arrange it along the boom direction. (2) lifting and adding section operators enter their posts according to their respective duties. (3) check whether the hydraulic system is working normally, hydraulic oil pressure should meet the requirements, Piston Rod expansion and contraction smooth, no jam phenomenon. (4) check the condition of jacking beam and hanging board. (5) adjust the clearance between the guide wheel of the jacking sleeve and the main chord of the tower body to meet the requirements. (6) according to the specifications, hoist a standard section to be added to the introduction of the beam, and then hoist a standard section, mobile amplitude trolley to find balance, locking the slewing mechanism.
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