Pillar jib cranes

This is the name of all cranes applying stretched arm to lift articles. The arm is classified to the pitch and fixed type; the fixed arm means that trolley is equipped to the arm and operated by moving in axial direction or by arms rotation; the pitch arm can make arm pitch up and down and spin to lift loads. The types of cantilever-arm cranes vary from different shapes and purposes; and can be classified into (1) stretched-arm crane, (2) hammer-type crane, (3) wall-inserted crane and (4) level-moved crane.