In bridge construction projects, the lifting machinery used can generally be classified into three major categories based on their structure and performance: light and small lifting equipment, bridge-type lifting machinery, and boom-type cranes. Light and small lifting equipment such as jacks, pneumatic hoists, electric hoists, balance hoists (also known as balance hoists), winches, etc. Bridge frame type lifting machinery such as girder cranes, gantry cranes, etc. Boom type cranes such as fixed slewing cranes, tower cranes, truck cranes, tire cranes, crawler cranes, etc.
A multi-action lifting machine that can vertically lift and horizontally transport heavy objects within a certain range. Also known as a crane. It belongs to material handling machinery. The working feature of a crane is intermittent movement, that is, in one working cycle, the corresponding mechanisms for picking up materials, transporting, unloading and other actions work alternately.
