290HC Mast SectionThe load moment is the product of the lifting weight and the amplitude.
how the lifting weight of the lower tower crane varies with the amplitude, in response to your questions. The product of the weight and amplitude of the tower crane is called the load moment, which is the main technical parameter of the crane. Through slewing mechanism and slewing support, the lifting height of tower crane is high, the inertia mass of slewing and walking is large, so it needs good speed regulation performance. In general, besides the resistance speed regulation, Eddy current brake, frequency regulation, pole changing, silicon controlled rectifier and electromechanical combined speed regulation are also used. In order to ensure safety, the tower crane has good safety devices, such as lifting weight, amplitude, height and load moment limiting devices As well as the trip limit switch, tower top signal lights, wind meter, wind clamp rail, climbing ring, such as the aisle fence. The driver's cab should be comfortable, easy to operate, with good view and complete communication equipment.
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