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Jack-up offshore platform lifting gear box

An offshore platform and gear box technology, applied in portable lifting devices, belts/chains/gears, transmission boxes, etc., can solve the problems of limited bearing capacity and large radial size, and achieve high bearing capacity, large transmission ratio, power Stable and reliable effect

Active Publication Date: 2019-06-21
CHONGQING UNIV
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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a lifting gearbox for a self-elevating offshore platform to solve the problems of limited load-carrying capacity and large radial dimension of the lifting gearbox under the requirements of the same strength and power, so as to ensure Under the premise of high speed ratio and transmission efficiency, the transmission is stable, reliable and compact

Method used

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  • Jack-up offshore platform lifting gear box
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  • Jack-up offshore platform lifting gear box

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Embodiment Construction

[0020] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0021] Depend on figure 1 It can be seen that the present invention includes a two-stage NGW planetary gear train, a four-stage fixed-axis split flow confluence drive train, a climbing gear shaft 23 and a gearbox housing, wherein the ring gear 43 of the two-stage NGW planetary gear train and the gear box housing are One-piece structure, which can be used as a box section of the gearbox shell, forms a closed box with the gearbox end cover 3, the bearing end covers 25, 28, 30 and other box sections 26, 31, 32, 34, 39 Gearbox housing, wherein: the two-stage NGW planetary gear train consists of the first-stage sun gear shaft 1, the first-stage planetary gear 5, the first-st...

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Abstract

The invention relates to a jack-up offshore platform lifting gear box, and belongs to the technical field of offshore platforms. The jack-up offshore platform lifting gear box comprises a two-stage NGW planetary gear train, a four-stage fixed shaft flow dividing and combining transmission gear train, a climbing gear shaft, and a gearbox shell, power is input by a first solar axle, decelerated by the two-stage NGW planetary gear train and the four-stage fixed shaft flow dividing and combining transmission gear train, and then output by the climbing gear shaft, output pinions mesh with gear racks on pile legs, and the multiple lifting gear boxes work simultaneously to complete the lifting work of a jack-up offshore platform. According to the jack-up offshore platform lifting gear box, a modeof combining the two-stage NGW planetary gear train and the four-stage fixed shaft flow dividing and combining transmission gear train is adopted, the transmission ratio is guaranteed, meanwhile, thestructure is compact, the transmission ratio is high, the bearing capacity and the stability are high, the stable output torque is large, and the reduction ratio reaches 2218.56:1.

Description

technical field [0001] The invention belongs to the technical field of ocean platforms, and relates to a gear transmission mechanism used for lifting and lowering the ocean platform, in particular to a lifting gear box for a self-elevating ocean platform. Background technique [0002] With the gradual depletion of land resources, the center of gravity of resource exploitation has gradually shifted to the far sea, and offshore platforms play an important role as supporting facilities. The jack-up offshore platform has the advantages of flexible operation, less consumables, low construction cost, and good mobility, so it has become an important engineering equipment for the development of offshore oil and gas resources. The lifting gearbox is the key and core part of the jack-up offshore platform, but the working environment of the jack-up offshore platform is harsh and the working conditions are complicated. Long, large safety factor and other characteristics. At present, w...

Claims

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Application Information

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IPC IPC(8): F16H37/04F16H57/02F16H57/023F16H57/08F16H55/17E02B17/08
Inventor 宋朝省李帅朱才朝刘怀举杜雪松
Owner CHONGQING UNIV
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