L68A1 Mast Section Explain how the lifting capacity of tower crane changes with the amplitude as required
The lifting capacity of the tower crane varies with the amplitude. The product of lifting capacity and amplitude is called load moment, which is the main technical parameter of the tower crane. Through the slewing mechanism and slewing bearing, the lifting height of tower crane is large, and the inertia mass of slewing and traveling is large, so it needs to have good speed regulation performance, especially the lifting mechanism needs to be able to light load fast, heavy load slow, installation in place micro motion. In addition to resistance speed regulation, eddy current brake, frequency modulation, pole changing, thyristor and electromechanical combination are often used for speed regulation.
L68A1 Mast Section：
http://www.towercranesupply.com/product/l68a1-mast-section-for-tower-crane-masts
In order to ensure the orderly progress of safety production, the tower crane has good safety devices, such as lifting capacity, amplitude, height, load moment and other limiting devices, as well as travel limit switch, tower top signal light, anemometer, windproof rail clamping device, ladder protection ring, walkway guardrail, etc. The cab shall be comfortable, easy to operate, with good vision and complete communication equipment
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L68A1 Mast Section：
http://www.towercranesupply.com/product/l68a1-mast-section-for-tower-crane-masts
