Folding arm hydraulic crane

Abstract

A folding arm hydraulic crane comprises a base; the base is provided with a swing mechanism for controlling the rotation of the crane; the upper part of the base is connected with a tower body through fasteners; the top of the tower body is hinged with a luffing lazy arm; the head of the luffing lazy arm is hinged to a folding arm; the folding lazy arm is provided with a hinge seat; the hinge seat is fixed with a lifting winch; and the lifting winch is connected with a hook through a wire rope. The folding arm hydraulic crane also includes a luffing oil cylinder; the luffing lazy arm is provided inside with a hinge support; one end of the luffing oil cylinder is connected with the tower body, and the other end of the luffing oil cylinder is connected with the hinge support; and a folding oil cylinder is located between the hinge support and the hinge seat. The folding lazy arm occupies small space, and is flexible and reliable for usage. During working, the folding lazy arm is expanded to lift distant goods; and the folding lazy arm is folded when the working stops, so as to greatly reduce the ship space needed by the crane.

Description

technical field [0001] The invention relates to the technical field of hoisting equipment, in particular to a folding-arm hydraulic crane. Background technique [0002] A marine crane is a large deck machinery on a ship, and it is a device for loading and unloading cargo on a ship. [0003] Tugboats and fishing boats in the ship market, because the ships themselves are not very large, will occupy a large part of the hull space when installing ordinary marine cranes. Some tugboats and fishing boats cannot install ordinary marine cranes at all due to space constraints. Contents of the invention [0004] Aiming at the above-mentioned shortcomings in the existing production technology, the applicant provides a folding arm hydraulic crane with a reasonable structure, so that it occupies a small space, has a light structure, and is easy to install and use. [0005] The technical scheme adopted in the present invention is as follows: [0006] A folding-arm hydraulic crane, comp...

AI Technical Summary

Problems solved by technology

[0003] Tugboats and fishing boats in the ship market, because the ships themselves are not very large, will occupy a large part of the hull space when installing ordinary marine cranes. Some tugboats and fishing boats cannot install ordinary marine cranes at all due to space constraints.

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