Height operation refers to the operation at a height above 2 meters (including 2 meters) of the base level of the fall height, which is likely to fall. High-altitude working machinery is a special equipment to meet the needs of high-altitude work, which can lift operators, tools, materials, etc. to the designated position through the operation platform to complete the installation and maintenance operations, while ensuring the safety of operators. As a kind of high-altitude working machinery, high-altitude working platform is gradually replacing traditional high-altitude working equipment such as scaffolding and hanging baskets with its characteristics of economy, safety and efficiency. There are more types of high-altitude working machinery, and according to the nature of the chassis, it can be divided into two categories: high-altitude working platform and high-altitude working vehicle:

            (1) high-altitude working vehicle: the working device of high-altitude working vehicle is connected with the chassis of the car, which is generally modified by the second-class car chassis, so the cost is more expensive than the high-altitude working platform, and its advantage is that the movement is more fast and convenient and can be used in long-distance maneuvering. At present, it is mainly used in electrical maintenance, highway, shipbuilding, construction, garden and so on.

             (2) Aerial work platform: aerial work platform does not have a car chassis, is an independent operating device, if you need to work long distance, it is placed on the car transport. According to the chassis power division, aerial work can be divided into self-walking, mobile, fixed, if further subdivided according to the lifting structure, the current market is common, straight arm type, curved arm type, shear fork type, aluminum alloy mast type, frame type of these several types of aerial work platform.

             The application scenarios of aerial work platforms are wider, which is the mainstream trend. It is not necessary to consider the restrictive factors such as chassis stability and load capacity. Compared with aerial work vehicle, aerial work platform has greater flexibility in lifting structure and driving power. Compared with the aerial work vehicle, the aerial work platform does not have to consider the stability and carrying capacity of the vehicle chassis in the design and production, so it has greater flexibility in the driving structure, lifting power and other aspects, and can adapt to the needs of a large number of operating occasions. The application field of aerial work vehicle is mainly in the direction of electric power, garden, etc., but the aerial work platform covers many fields such as construction, large equipment maintenance, indoor and outdoor work, warehousing and logistics.

           Due to its excellent safety and excellent work efficiency, the aerial work platform is widely used in building construction as a substitute for scaffolding, but there are many areas that can also use the aerial work platform, which can achieve the dual purpose of ensuring safety and improving work efficiency.

           However, aerial work platforms can be used not only in construction, but also in some fields similar to aerospace, municipal livelihood, aerial work services and so on. Such as fire pipe installation, maintenance and cleaning of building exterior walls, large-scale equipment manufacturing and overhaul, supermarkets and warehousing logistics, in addition to these, aerial work platform can also be widely used in national defense, ports, airports, power, communications, landscape and other departments, and can also be designed according to specific application conditions customized products.