How to safely operate a crane?

Different ways depending on the installation machine can be divided into
1, truck cranes
Truck crane: the crane mounted on the chassis of the vehicle on the general or special low disk performance is equivalent to the total weight of the same vehicle truck, road vehicles comply with the technical requirements, which can be on the road in all kinds of passage. Such cranes generally available, and get off two control room for Industry required when projecting legs remain stable. From the weight of a large range, from 8 tons to 1,000 tons, the chassis number of axles, from 2 to 10. Is the largest output, the most widely used type of crane.
2, the tire Manual hoist
Lifting part of the installation in a special crane chassis of a pneumatic tire. Combined with an engine on and off, speed is generally not more than 30KM / H, vehicle width is wider, it should not travel long distances on the highway. Has no legs and hoists with lifting function, suitable for For garages, docks, construction sites and other places with limited movement distance hoist operation.
3, rough terrain Hoist equipment
Developed in the 1970s as a crane whose lifting crane tires similar function can also be performed without legs and hoists with lifting. The difference is the form and structure of the chassis chassis structure by a unique brought improved running performance. This crane launch Machines are installed in the chassis, the chassis has two axles and four large diameter off-road tread tires. Four wheel drive wheels and steering wheel are when the muddy uneven transfer station on the site, the four wheels to transmit power, that four-wheel drive, in order to improve road through the muddy ground and uneven And their capacity. When on a flat surface at a faster rate when traveling with only two wheels on the front axle or rear axle drive to reduce energy consumption. Random file of the crane, with said four-wheel drive 4 × 4, 4 × 2 represents 4 there are two axle wheels are wheels. The model for tight  Site operations. Enabling continuous infinitely variable, in the case of road resistance mutation does not turn off the engine, and thus greatly facilitates the driver's operation. The rough terrain cranes can be a performance extended, powerful and flexible tire cranes.
4, all-terrain crane
Is a combined truck cranes and rough terrain cranes characteristics of high-performance products. It can not only transfer as fast as cranes, long distance running, but also to meet in a narrow and bumpy or muddy pitch on the job requirements, namely traveling speed, multi-axle drive, full rotary
To the three steering mode, ground clearance, climbing capacity, can not outrigger hoists and other functions, is a very promising product. But the price is higher, use and maintenance require a higher level.
5, special hoist equipment
To accomplish a specific task and the development of special cranes. For example: for the mechanized implement tactical and technical safeguards used, mounted on armored vehicles in off-road vehicle or lifting wheel rescue vehicle; to deal with road traffic accidents wrecker, etc., fall into this category.