A car crane is a type of crane installed on a regular car chassis or a specially designed car chassis, with a separate driving cab and lifting control room. The advantages of this crane are good maneuverability and quick transfer. The disadvantage is that it requires leg support during work, cannot travel under load, and is not suitable for working on soft or muddy fields. The chassis performance of a car crane is equivalent to that of a heavy-duty truck with the same total vehicle weight, which meets the technical requirements of road vehicles and can therefore travel unobstructed on various roads. This type of crane is generally equipped with two control rooms for getting on and off the vehicle, and the support legs must be extended to maintain stability during operation. The range of lifting capacity is very large, ranging from 8 tons to 1600 tons, and the number of axles on the chassis can range from 2 to 10. It is the most productive and widely used type of crane