A slewing device for an offshore platform crane

Abstract

A slewer of an ocean platform crane comprises a bearing device, a rotating body and a driving device. The bearing device comprises a supporting ring body and fixing pieces which are installed on the outer side of the supporting ring body. The rotating body comprises an annular sleeve and two supporting arms; the annular sleeve is vertically installed at the top of the supporting ring body; first reinforcing rib plates are arranged between the inner sleeve wall and the outer sleeve wall of the annular sleeve and vertically distributed with an inner sleeve as the axis in a central symmetry mode; the two supporting arms are connected to the two sides of the annular sleeve correspondingly and are parallel to each other; the rear end of each supporting arm is of a triangular column structure; the outer side faces of the two triangular column structures are parallel to each other; and the supporting arms and the annular sleeve are of an integrated structure. The driving device is installed on the outer side of the bottom of the rotating body and used for driving the rotating body to move rotationally with the supporting ring body as a rotating shaft. The slewer of the ocean platform crane can effectively disperse the stress effect and is higher in overall strength and bearing capacity and more balanced and stable in stress.

Description

technical field [0001] The invention relates to the technical field of offshore platform hoisting, in particular to a slewing device of an offshore platform crane. Background technique [0002] With the development of offshore wind power and oil exploration industries, the demand for offshore platform cranes is increasing, and in the ocean's windy and wave environment and the particularity of large-scale operations, the requirements for the structure of offshore platform cranes are gradually increasing. Increase. [0003] The slewing device of the existing offshore platform crane is installed on the base of the crane by means of a slewing platform, and a pile hole with enough space needs to be opened in the center so that the pile legs can pass through it, so as to save space. , but due to the existence of the large-diameter pile hole in the center of the slewing platform, the overall strength and bearing capacity of the slewing platform will often be greatly reduced; and i...

AI Technical Summary

Problems solved by technology

[0003] The slewing device of the existing offshore platform crane is installed on the base of the crane by means of a slewing platform, and a pile hole with enough space needs to be opened in the center so that the pile legs can pass through it, so as to save space. , but due to the existence of the large-diameter pile hole in the center of the slewing platform, the overall strength and bearing capacity of the slewing platform will often be greatly reduced; and it is usually set on the slewing platform in the form of a support frame to realize the support for the tripod and the boom , but the space between the support frame and the slewing platform is often wasted, and the support frame often has the problem of unbalanced force during the rotation movement, which will affect the service life of the slewing device and the rotation stability is low

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