The chain bucket dredger uses a dredging bucket mounted on two parallel steel cables to excavate sediment, and uses a chain wheel and steel cable at the top of the bucket tower to pull the dredging bucket for excavation and unloading. This type of ship is suitable for excavating harder soil. The grab dredger uses a large grab to directly grab sediment, suitable for excavating harder soil or salvaging underwater objects.

Dredgers mainly handle soft materials such as silt and silt, which usually contain high moisture and viscosity. The sand dredger mainly deals with hard substances such as sand and soil, which are relatively dry and loose. There are significant differences between sand dredgers and dredgers in terms of ship type design, working principles, applicable scenarios, and operating objects. These differences make them play irreplaceable roles in specific engineering fields.

Dredgers mainly use various types of dredging machinery for operations, such as grab buckets, suction pipes, etc. Through excavation, vertical lifting, and horizontal transportation, they excavate silt or sediment underwater and transport it to the designated destination. The sand dredger drives the excavator bucket to load materials through a power device, and cooperates with screening devices, lifting devices, and conveying devices to screen and clean the excavated sand for continued use or sale.

With the continuous progress of technology and the increasing demand for environmental protection, dredgers are also constantly developing towards intelligence and environmental protection. Future dredgers will pay more attention to energy conservation, emission reduction, and ecological protection, adopting more efficient and environmentally friendly excavation technologies and treatment equipment. Meanwhile, with the continuous application of technologies such as artificial intelligence and big data, the intelligence level of dredgers will also continue to improve, achieving more precise and efficient operations.

In the vast ocean and vast rivers and lakes, there is an unknown yet crucial role - the dredger. It is not only a powerful assistant in water construction, but also a key force in river dredging, port expansion and other projects. This article will take you in depth to understand the working principle, types, and applications of dredgers in modern engineering.