Now the aerial construction is also more and more complex, and there are many parts of the aerial site, remote location, space is small, resulting in many normal large aerial work vehicles, such as many car cranes are difficult to expand the legs, even if they can barely get into this small work space, is also unable to normal lifting operations, or let lifting capacity greatly reduced.
In particular, some large shopping malls, large office areas of indoor aerial work, on some car cranes and aerial work vehicles is a great restriction, not only in these areas of work is difficult to carry out normal lifting operations, and even in many times normal access to these work areas are difficult.
The road crane spider crane is a mechanical equipment specifically used for lifting operations on roads. It has a unique spider shaped structure and can stably stand on uneven roads for work.