1. Labor-saving principle;
2. Eliminate invalid treatment;
3. Improve operational flexibility;
4. Rational use of machinery;
5. The principle of continuity;
6. Keep the logistics balanced and smooth;
7. The principle of unitization of containers;
8. personification principle;
9. To improve the comprehensive effect, the rationalization of loading and unloading in logistics mainly includes the selection, rational configuration and use of loading and unloading machinery and equipment, and the rationalization of loading and unloading, so as to reduce the number of loading and unloading as much as possible to save logistics costs and obtain better economic benefits.
Loading and unloading means: "Loading and unloading goods by manpower or machinery at the designated place." "Handling" means: "In the same place, the horizontal movement of goods is the main logistics operation.
Loading and unloading is an activity to change the storage and support state of "objects", which mainly refers to the movement of objects in the up and down direction. Handling is an activity to change the spatial position of "objects", which mainly refers to the lateral or oblique movement of objects. Usually loading and unloading are used together.
Significance of loading and unloading:
The loading and unloading operation has a heavy workload, complicated methods, unbalanced operation and high safety requirements. But it is an indispensable link in logistics activities, which is of great significance to the development and efficiency of logistics.
Loading and unloading plays a connecting role in logistics activities. Loading and unloading operations must be carried out in all links of logistics and between different links of the same link. It is the loading and unloading activities that connect all stages of logistics and make it a continuous flow process. In the logistics of production enterprises, loading and unloading becomes the link between production processes, which is a continuous operation process from the preparation of loading and unloading of raw materials and equipment to the loading and unloading of products.
Handling plays an important role in logistics cost. In logistics activities, loading and unloading operations are constantly appearing and repeating, and their frequency is higher than other logistics activities. Moreover, every loading and unloading activity wastes a long time, so it often becomes the key to determine the logistics speed. Loading and unloading activities also consume a lot of human activities, so the proportion of loading and unloading expenses in logistics costs is also high.