Mobile port Hoppers are large-sized equipment, one of its important components being the Bogies that ensure its mobility. As indispensable equipment in port bulk cargo handling operations, the function of a port Hopper is to efficiently and safely transfer bulk cargo from a ship or other means of transport to the shore yard, or reverse loading from yard to means of transport. The design and manufacture of the Hopper need to give full consideration to the characteristics of the bulk cargo such as type, particle size, density, etc., as well as the operating environment and efficiency requirements of the harbour.

A typical harbour Hopper mainly consists of a Hopper body, support or bogies, suspension device, unloading mechanism, dustproof device and so on. The Hopper body is usually a closed container, which is used to carry bulk cargo; the bracket is responsible for supporting the whole Hopper and connecting with the crane and other equipment; the suspension device is used to hang the Hopper on the crane; the unloading mechanism controls the opening and closing of the Hopper to realise the unloading of bulk cargo; and the dust prevention device is used to reduce the dust flying during the unloading process, to protect the environment and the operating personnel. Harbour Hoppers are widely used in loading and unloading various bulk cargoes such as coal, ore, grain, cement, etc. In modern harbours, Hoppers are usually used for loading and unloading of bulk cargoes. In modern ports, Hoppers are usually used in conjunction with automated loading and unloading systems to achieve efficient and intelligent operations.