1. Crane machines (single beam cranes, electric hoist cranes) should be scrapped when the number of broken wires exceed 10%, the rope is rusted or the surface is worn up to 40%, and there are dead bends and structural deformation of the rope core. If the broken wire or abrasion is less than the scrap standard, the bearing capacity should be reduced proportionally, when it is manually driven, K = 4.5; when it is mechanically driven, K = 5 ～ 6.2. Wire ropes of crane machines should be with a safety factor of K = 3.5, specifications should conform to the requirements of the construction plan ...
1. The operation direction and the running direction of each mechanism of the single beam crane should meet the design requirements;2. Start the motors of each mechanism separately, the operation should be normal, and measure the no-load current;3. The operation of each safety protection device and brake should be accurate and reliable;4. Electrical equipment such as power distribution panels, cabinets, motors, controllers, etc., should work normally;5. Each operation and lifting mechanism should travel at least three times along the whole track, and there should be no abnormal phenomena;6. Th ...
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