Truck mounted crane (also known as truck mounted crane or crane truck) is a special engineering vehicle based on the modification of Class II vehicle chassis, integrating hydraulic crane, cargo container and safety protection system, specifically used for the integrated operation of 3-50 ton cargo lifting and transportation. Its core positioning is a "mobile lifting and transportation platform", with the core advantage of "one vehicle for two purposes, synchronous lifting and transportation", without the need to separately dispatch cranes and trucks, greatly reducing the operation cycle,