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Tower Crane Equipment Characteristics
2024-01-31
The boom form of tower crane is divided into horizontal type and strut type. When the boom is horizontal, the trolley runs along the horizontal boom to luff, and the luffing motion is balanced. The boom is longer, but the dead weight of the boom is larger. When the boom is a pressing rod type, the luffing mechanism tractions the boom up and down to luff, and the luffing motion is not as stable as the horizontal type, but its own weight is small.
The lifting capacity of the tower crane varies with the range. The product of the lifting weight and the amplitude is called the load moment, which is the main technical parameter of this crane. Through the slewing mechanism and slewing support, the tower crane has a large lifting height, large inertial mass of slewing and walking, so it needs to have good speed regulation performance, especially the lifting mechanism requires fast light load, slow heavy load, and easy installation. Bit fretting. In addition to resistance speed regulation, eddy current brakes, frequency modulation, pole-changing, thyristor and electromechanical combination are often used for speed regulation.
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