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Metallurgical overhead cranes technical standards

Oct 19, 2018
In addition to meeting the regulatory specifications and standards for general-purpose overhead cranes, it is necessary to retrofit the original overhead cranes to meet the metallurgical overhead cranes technical requirements:
1. It is usually used for metallurgical lifting special motor. When the ambient temperature exceeds 40 °C, should use the H-class insulated motor.
2. The metallurgical overhead cranes are equipped with two sets of independent brake double brakee
3. The metallurgical hoist must be equipped with a weight limiter;
4. Metallurgical overhead cranes are equipped with double limiters with different types of lifting positions, which are generally combined with heavy hammer type and rotary type, and should control different breaking devices, usually lifting cranes with a height greater than 20m, and should be as needed to Install a lower limit position limiter;
5. Adopt thyristor stator voltage regulation and eddy current brakes, energy brakes and thyristor power supply, as well as DC unit power supply speed control and other lifting mechanisms, may cause overspeed due to speed regulation and 20t or more for lifting molten metal. 
6. Universal overhead cranes must have overspeed protection.
metallurgical overhead cranes