According to the form of chassis, there are two kinds of tyre crane and automobile crane.The latter's lifting operations Tyre crane.

Tyre crane Part of the body is installed on the chassis of the car. The body is long and has the driving performance of a heavy truck.Its advantages are: compared with auto crane wheel base wide, good stability, short body, small bending radius, can work within the scope of 360 °.However, it has higher requirements on the road surface when driving, and its speed is slower than the car type, which is not suitable for working on the soft and muddy ground.An arm - rotating crane using a wheel - like chassis.It consists of two parts: getting on and getting off.The truck is a lifting operation part, equipped with moving arm, lifting mechanism, amplitude changing mechanism, balance weight and turntable, etc.Get off for supporting and walking parts.The connection between the upper and lower vehicles is supported by rotary support.When lifting weight, the supporting leg should be lowered, the supporting surface should be enlarged, and the fuselage should be leveled to ensure the stability of the crane.