L46A1 Mast Section the key points to be noticed when using tower crane
(1) After the installation of the tower crane, the overall technical inspection and adjustment shall be carried out, and the crane can be delivered for use only after passing the inspection in stages and the whole machine. Under wireless load, the perpendicularity deviation between the tower body and the ground shall not exceed 4 / 1000.
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(2) The disassembly and assembly personnel shall wear safety protection articles, fasten the safety belt when working at heights, and be familiar with and carefully implement the disassembly and assembly process and operation procedures.
(3) The following personnel must be provided for the disassembly and assembly of tower crane: project leader, safety leader and machinery management personnel with safety production assessment certificate; construction crane installation and disassembly personnel, crane driver, crane signalman, rigger and other special operation personnel with special construction operation qualification certificate.
(4) The track foundation and concrete foundation of the tower crane must pass the design and calculation, and can be used only after passing the acceptance. Side slopes and drainage facilities shall be built around the foundation, and a certain safety distance shall be kept from the foundation pit.
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(5) Before jacking, check the connection of all components of the hydraulic jacking system. It is forbidden to rotate the boom and other operations during jacking.
(6) The metal structure of tower crane, track and reliable shell of all electrical equipment shall be equipped with reliable grounding device, the grounding resistance shall not be greater than 4 Ω, and lightning protection device shall be set.
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