Double-layered quay crane for loading and unloading containers

Abstract

The invention discloses a double-layered quay crane for loading and unloading containers. The double-layered quay crane comprises a portal type supporting leg, main walking girders and a hoisting trolley, wherein the portal type supporting leg is provided with the two main walking girders; a walking rail is arranged on the inner side of each main walking girder; the hoisting trolley is arranged on the walking rails; two transfer vehicle walking girders, which are parallel to the main walking girders, are arranged just below the main walking girders; the inner sides of the two transfer vehicle walking girders are provided with walking rails with baffles; a transfer vehicle is arranged on the walking rails with the baffles. According to the double-layered quay crane disclosed by the invention, the transfer vehicle walking girders are arranged below the main walking girders and the transfer vehicle is arranged on the transfer vehicle walking girders, so that the transfer vehicle is responsible for transferring the containers and the hoisting trolley is only responsible for hoisting the containers; in a process of transferring a container by the transfer vehicle, the hoisting trolley finishes the hoisting work of another container, so that the loading and unloading efficiency of the containers is improved; when the double-layered quay crane is used for loading and unloading the containers, the efficiency is improved by 50% compared with that of traditional quay cranes.

Description

technical field [0001] The invention relates to a double-deck quay bridge used for loading and unloading containers, which belongs to the field of engineering machinery. Background technique [0002] In the prior art, the quay cranes in ports all adopt the structural form of a walking track and a lifting trolley (such as Figure 6 ). Taking ship unloading as an example, the lifting trolley must first lift the container on the ship, then transport the container from one end of the running track to the other end of the running track, and then unload the container to the truck waiting under the quay bridge. After the container is unloaded, the lifting trolley returns to the original road to lift the next container (loading is the reverse process of unloading). All the work is done by one lifting trolley, so the loading and unloading efficiency of the container is very low, but as the cargo ship As the number of containers continues to increase, more and more containers are loa...

AI Technical Summary

Problems solved by technology

Taking ship unloading as an example, the lifting trolley must first lift the container on the ship, then transport the container from one end of the running track to the other end of the running track, and then unload the container to the truck waiting under the quay bridge. After the container is unloaded, the lifting trolley returns to the original road to lift the next container (loading is the reverse process of unloading). All the work is done by one lifting trolley, so the loading and unloading efficiency of the container is very low, but as the cargo ship With the continuous increase of cargo ships, more and more containers are loaded on cargo ships, and there are higher requirements for the loading and unloading efficiency of port containers, while traditional quay bridges have gradually been unable to meet people's needs.

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