A construction method of a gear box for a self-elevating platform lifting system

Abstract

The invention discloses a method for constructing a gear box of a self-elevating platform lifting system. In the method, the gear box is divided into two groups for construction, and the two groups are respectively a gear box main body group and a gear box side cover group. Specifically, it includes the following steps: Step 1, constructing the gearbox main body assembly and the gearbox side cover assembly respectively; Step 2, merging the gearbox main body assembly and the gearbox side cover assembly after construction. Utilizing the method in the present invention to construct the gear box of the jack-up platform lifting mechanism overcomes the construction problems of high welding requirements, narrow space and closed construction of the gear box of the jack-up platform lifting mechanism. The optimized installation sequence and bevel arrangement realize the constructability of the platform gearbox segments and ensure the weldability of the internal components of the gearbox.

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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