汽车起重机俗称汽车吊,是一种自行式全迥转、起重机构安装在汽车底盘上的起重机械。它具有行驶速度高、机动灵活、起重性能良好等特点,很适合建筑施工现场使用。汽车起重机一般分为四种类型:机械传动和操纵(Q型)、全液压传动和伸缩臂式(QY型)、起重各工作机构由多台电动机驱动(QD型)以及全液压随车吊(Y D型)。型号字母后面标有数字,表示额定起重吨位。汽车吊根据起重量的不同, Automobile cranes are commonly known as automobile cranes, which are self-propelled full-twist cranes and lifting mechanisms that are mounted on the chassis of a vehicle. It has features such as high speed, flexibility, and good lifting performance, which is very suitable for construction site use. Truck cranes are generally divided into four types: mechanical transmission and control (Q type), full hydraulic transmission and telescopic arm type (QY type), lifting each working mechanism driven by multiple motors (QD type) and full hydraulic truck crane (YD type). The type letter is followed by a number indicating the rated lifting tonnage. According to the weight of the car crane,