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QTZ250(7030) tower crane

The large-scale mining equipment produced by Nantong Pioneer Machinery Co., Ltd. is widely used in various industries such as cement, steel, power plants, metallurgy, etc., with users all over the country.

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  • Product Description
  • ModelQTZ250(70304) Tower crane, lifting moment is 250tm.
    Tower crane: the boom of tower crane is divided into horizontal type and pressure bar type. When the boom is horizontal, the load car runs along the horizontal boom with variable amplitude, and the variable amplitude movement is balanced. The boom is longer, but the boom weight is larger. When the boom is of pressure bar type, the luffing mechanism traction arm pitched and luffing, and the luffing movement is not as smooth as the horizontal type, but its dead weight is smaller. The lifting weight of a tower crane varies with amplitude. The product of lifting weight and amplitude is called load moment, which is the main technical parameter of this crane. Through the slewing mechanism and slewing bearing, the lifting height of the tower crane is large, and the inertial mass of rotation and walking is large, so it is necessary to have good speed regulation performance. In particular, the lifting mechanism requires fast light load, slow heavy load, and fretting in place. Generally in addition to the use of resistance speed regulation, but also often use eddy current brake, frequency modulation, pole change, silicon controlled and mechanical and electrical combination of speed regulation.

Mining machinery refers to the machinery directly used in mineral mining and enrichment operations, including mining machinery and mineral processing machinery. The working principle and structure of prospecting machinery are mostly the same or similar to mining machinery, and it is also a kind of mining machinery in a broad sense. A large number of cranes, conveyors, ventilators and drainage machinery are also used in mining operations. Mining machinery and mineral processing equipment usually include ball mills, magnetic separators, SF flotation machines, XJK flotation machines, spiral classifiers, high-frequency screens, pendulum feeders, trough feeders, spiral chutes, dryers, Mixing barrels, shakers, thickeners, tailings recovery machines, bucket elevators, rotary kilns, etc.

Keyword:

Valve equipment | Homogenizing warehouse and unloading equipment

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Huaxia Heavy Industry

Mainly engaged in the production and sales of tower cranes, lifts and related accessories.

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