The continuous ship unloader includes chain bucket ship unloader, belt ship unloader, screw ship unloader, bucket wheel ship unloader and pneumatic ship unloader. Compared with the bridge grab ship unloader, the continuous ship unloader does not have the repeated process of lifting and trolley walking during the ship unloading process, which has higher mechanical efficiency and can minimize the warehouse clearance. Due to the small mechanical impact and vibration, the service life of the equipment can be improved; Under the same capacity, low energy consumption and light weight can reduce equipment investment and wharf hydraulic investment; In addition, the continuous ship unloader has the advantages of low noise and little environmental pollution.

Of course, because the continuous ship unloader is a special port loading and unloading equipment, its flexibility is poor, and its adaptability to materials with high viscosity, large particle size, high water content, high corrosiveness and grindability is also poor, so it should be carefully selected.

At present, the continuous ship unloader is mainly used in chemical fertilizer, grain, sand and gravel, cement and some coal terminals. Generally, the screw ship unloader is used to unload fertilizer and grain, the chain bucket ship unloader is used to unload sand, and the bucket wheel ship unloader is commonly used to unload coal.

Shiploader is a large-scale bulk cargo machinery used for loading in bulk cargo terminals. The ship loader is usually a continuous loading operation, so it is necessary to have supporting equipment to provide continuous material flow so that the ship loader can load continuously. In terms of technical content and manufacturing difficulty, loaders are not as good as unloaders.