Marine knuckle boom crane

Abstract

The invention discloses a marine knuckle boom crane, belongs to the technical field of shipbuilding, and the crane comprises a base, a stand column and a telescopic boom, wherein the telescopic boom is controlled through a first oil cylinder; a hoist engine is arranged at the lower end of the telescopic boom; the extension end of the telescopic boom is provided with a metal shell used for enclosing a electromagnet; a toggle switch electrically connected with the electromagnet is arranged on the metal shell; the switch bar of the toggle switch stretches out of the metal shell, and a switch oil cylinder is connected between the outside of the boom body of the telescopic boom and the switch bar; an inner arm, which is controlled to be folded through a third oil cylinder, is hinged between the top end of the stand column and the telescopic boom; a second oil cylinder, which is used for folding the telescopic boom, is arranged on the inner arm; the two ends of the second oil cylinder are respectively hinged to the two ends of the inner arm, and the bottom end of the stand column is connected with the base through a slewing bearing. By adopting the marine knuckle boom crane, the problem that a current marine crane cannot load and unload small messy ferrous metal objects, can only perform one-way operation, cannot be folded so as to influence the speed of a ship can be solved.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a marine folding-arm crane. Background technique [0002] A marine crane is a machine used for lifting, loading and unloading cargo of ships transported by sea. A marine crane includes a base welded on the deck base of the ship and a column fixed on the base. The top of the column is hinged with a The telescopic boom controlled by the oil cylinder, the lower end of the telescopic boom is equipped with a hoisting winch, the oil cylinder is connected with the pump station installed on the deck through the pipeline, and the motor of the pump station is electrically connected with the crane controller; this kind of machinery has the following Problem: a. It can only load and unload the whole piece, the goods packed in pallets or packed in boxes, but it cannot load and unload small pieces of scattered scrap iron or iron and metal goods without pallets; b . Since the base and the...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a marine folding arm crane, which can solve the problem of the scattered iron and metal goods that cannot be loaded and unloaded by the existing marine cranes and which can only work in one direction and cannot Folding affects the speed of the hull

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