Construction method for gear case of self-elevating platform lifting system

Abstract

The invention discloses a construction method for a gear case of a self-elevating platform lifting system. According to the method, the gear case is segmented into two assemblies to be constructed, and the two assemblies include a gear case body assembly and a gear case side cover assembly. The method specifically comprises the following steps that firstly, the gear case body assembly and the gear case side cover assembly are constructed; and secondly, the constructed gear case body assembly and the constructed gear case side cover assembly are combined. The method is utilized for constructing the gear case of a self-elevating platform lifting mechanism, and the construction problems that a gear case of a self-elevating platform lifting mechanism is high in welding requirement, and space is narrow and closed are solved; and through reasonable breaking joints of components, the reasonable component division and installing sequence and groove arrangement refining, the segmented constructability of the gear case of a platform is achieved, and weldability of components in the gear case is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of ship and ocean engineering construction, and in particular relates to a construction method of a gear box for a self-elevating platform lifting system. Background technique [0002] Among the various offshore platforms and other marine structures used in the exploration and exploitation of offshore oil and natural gas, jack-up platforms are more suitable for shallow sea areas. It has the advantages of almost continuous operation and high efficiency. Therefore, it has played a huge role in marine exploration and development at home and abroad, especially in the development of offshore oil and natural gas. As a key part of the jack-up platform, the lifting system has always been highly valued in the design and manufacture of the platform, and its performance directly affects the safety and use effect of the platform. [0003] The function of the lifting system is: before the drilling operation of the platf...

AI Technical Summary

Problems solved by technology

In order to achieve the above goals, a gearbox with a large speed ratio and a large load-bearing capacity is required. However, due to the limitation of working conditions and economic costs, the equipment on the offshore platform requires the smaller the volume and the lighter the weight. The production of the box has the characteristics of high welding requirements and narrow space. Therefore, using the conventional segmented construction method will cause some areas to be unable to be assembled and welded. How to solve this problem has become a technical difficulty in the industry.

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