L68A1 Mast SectionTower Crane Operating Safety Requirements and safety devices
(1) tower crane drivers and signaling personnel must be specially trained, issued by the relevant departments of the certificate, and pay attention to the tower crane driver learning tower type and the actual operation of the tower type.
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(2) to carry out the management of the special-designated aircraft, the system of the captain taking responsibility, and the system of strict shift-taking. (3) the newly installed tower crane or the tower crane after the overhaul must carry on the whole machine test run according to the specification requirement. (4) safe distance between tower crane and overhead transmission line. (5) suitable fire fighting equipment should be provided in the driver's compartment. Safety device for Tower Crane (1) Hook Safety Device: safety device to prevent the slings on the hook from slipping automatically from the hook. That is, a pressure spring is installed at the opening of the hook head to seal the opening. The spring can only go down and press open. The hanging rope can not be turned up after being put into the hook head to prevent the hanging rope from falling off automatically. (2) reel safety device: An effective measure to prevent an accident caused by improper winding of a wire rope beyond the reel. Its practice varies, mainly in the drum outside welding a steel cage, limit wire rope only, can move in the drum range. (3) Fixed Foundation: The pit depth is 600mm, concrete is poured on the lime soil, the surface is flat, there are waterproof and earthing protection measures.
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