L46A1 Mast Sectionpaid attention to in the installation of tower crane
1. When all the installation workers are in place, they must wear safety helmets and safety belts.
2. The safety alert area shall be effectively cordoned off and supervised by a specially assigned person. Non operating personnel shall not enter the installation site.
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3. The installation must be carried out in the daytime, and the meteorological conditions must meet the installation requirements. In case of severe weather such as strong wind and thunderstorm, the installation shall not be carried out.
4. After the installation of the base section, check whether the rail clamp is firmly clamped, whether the degree pull rod and diagonal brace are installed completely and accurately, the position deviation between the base section and the base frame is within the allowable range, the installation of the core weight is correct, the bolts and pins are complete, and the pre tightening force meets the requirements.
5. For the installation of standard section, jacking jacket and rotary platform, check whether the model of standard section is correct, whether the alignment of jacking jacket and standard section meets the requirements, whether the direction of the introduced trolley is correct, whether the connecting bolts are firm and reliable, and whether the bolt pre tightening force meets the requirements.
6. After the installation of the cab and tower cap device, check whether the connecting bolts are firm and firm, whether the pre tightening force meets the requirements, and whether the relative value of the horizontal deviation of the return point of the track contact of the underframe traveling trolley is not greater than 1 / 1000 of the design gauge, and the longitudinal absolute deviation is not greater than 1 / 1000 of the design gauge, and the vertical deviation of the tower body is not greater than 3 / 1000.
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7. After the installation of hanging wall and balance wall, check whether the connection parts are tight and reliable, whether the connection pin shaft is free of movement, and whether the fastening meets the technical requirements. Guardrails and fences shall be installed completely, pull rods or cables shall be installed correctly, stress shall be average, fastening shall meet technical requirements, and balance iron shall be installed correctly, firmly and reliably.
8. After the completion of the above installation, the hoisting, luffing, slewing and traveling mechanisms shall be put into trial operation. The operation of each working mechanism shall be balanced without abnormal noise, with sharp control, reliable braking, and sensitive and reliable actions in response to the safety maintenance and installation.
9. Therefore, after the installation of the device, the lifting test and tower crane operation test will be carried out.
10. Only when the test results are normal can the tower crane be confirmed to be installed.
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