Cranes used for bridge construction can generally be divided into four categories according to their structure and performance, light and small cranes, bridge cranes and cable car cranes. Light and small lifting equipment, such as jacks, pneumatic hoists, electric hoists, balance hoists (also known as balance cranes), hoists, etc. Bridge cranes, such as beam cranes. Boom cranes, such as fixed slewing cranes, cable cranes, such as lifts, tower cranes, truck cranes, tire cranes, crawler cranes, etc. According to the lifting characteristics, it is divided into mobile cranes, tower cranes and mast cranes, and according to the mode of operation, the first type uses a centralized drive, that is, a long drive shaft. The other is driven separately, and the motor drives the two driving wheels. In other words, the driving wheels on both sides are driven by electric motors. According to the structure, cranes are mainly divided into light and small lifting equipment and bridges. Type (bridge type, gantry crane), boom type (self-propelled, tower, gantry, railway, pontoon, mast crane), cable type.
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