Lifting machinery used in bridge construction can be generally divided into light and small lifting equipment, bridge type lifting machinery, jib type crane and cable type crane according to their structure and performance. Light and small lifting equipment such as: jack, pneumatic hoist, electric hoist, balance hoist (also known as balance hoist), hoist and so on. Bridge type cranes, such as beam cranes. Boom type cranes such as fixed rotary crane, tower crane, truck crane, tire crane, crawler crane and so on. Cable cranes, such as lifts.