Container crane

Abstract

The invention relates to a container crane. A regular port shoreside container loading bridge, a container gantry crane and the like have the problems that a steel wire rope between a container spreader and a trolley takes up much space, the container spreader is heavy and consumes much energy, the container has poor stability in the air and the like. A new trolley and a new container spreader are provided in the invention to effectively solve the problems and have the advantages of simple structure, economy and practicability, applicability to both large and small containers and detachable container spreaders.

Description

Technical field [0001] The invention relates to a container crane. Background technique [0002] Ordinary container cranes with walking trolleys, such as port quayside container loading and unloading bridges, site container gantry cranes, etc., are mainly composed of crane frames, wire rope drums, trolleys, wire ropes, spreaders, and twist locks. The existing problems: One is that the wire rope between the container spreader and the trolley occupies a lot of space. In some occasions where space is limited, such as on a ship with restricted headroom or when measuring instruments need to be added between the container and the trolley, etc. Cannot be applied; second, the container spreader is very heavy, some weighing about 10 tons, and it does reactive movement back and forth with the container, which wastes mechanical energy and electrical energy, increases the design weight of the crane structure, and increases the cost and cost; Single or four steel wire ropes are used to lift ...

AI Technical Summary

Problems solved by technology

[0002] Ordinary container cranes with walking trolleys, such as container loading and unloading bridges on the shore of ports, container gantry cranes on site, etc., are mainly composed of crane frames, wire rope reels, trolleys, wire ropes, spreaders and twist locks, etc. The existing problems: One is that the wire rope takes up a lot of space between the container spreader and the trolley. In some occasions where the space is limited, such as on a ship with limited headroom or when measuring instruments need to be added between the container and the trolley, It cannot be applied; the second is that the weight of the container spreader is very heavy, some of which weigh about 10 tons, and do reactive movement with the container back and forth, which wastes mechanical energy and electrical energy, and also increases the design weight of the crane structure, increasing the cost and cost; the third is Single or four steel wire ropes are used to lift the spreader and the container at or near the middle of the spreader. The stability of the container in the air is poor, which affects the container alignment, loading and unloading efficiency and safety.

Fourth, its own weight is huge

[0003] On April 23, 2008, the Chinese Patent Office announced the utility model patent "Short container spreader with weighing function", patent number 200720147642, trying to solve the above-mentioned first problem. Add a wing plate on each side, and use the wing plate instead of the wire rope to reduce the lifting height

However, this method reduces the lifting height to a limited extent. At the same time, using the wing plate instead of the steel wire rope reduces the lifting height while increasing the weight of the spreader and increasing the negative effect of the spreader's reactive movement with the container back and forth.

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