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A self-elevating offshore platform hoisting gearbox

A technology for offshore platforms and gearboxes, which is applied to portable lifting devices, belts/chains/gears, transmission boxes, etc., can solve the problems of large radial size and limited carrying capacity, and achieve large transmission ratio, high carrying capacity, and power Stable and reliable effect

Active Publication Date: 2022-03-08
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A self-elevating offshore platform hoisting gearbox
  • A self-elevating offshore platform hoisting gearbox

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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

A self-elevating offshore platform lifting gearbox of the present invention belongs to the technical field of offshore platforms, and includes a two-stage NGW planetary gear train, a four-stage fixed-axis diversion and confluence transmission gear train, a climbing gear shaft, and a gearbox housing. The power is provided by The input of the first sun gear shaft is decelerated by the two-stage NGW planetary gear system and the four-stage fixed-axis split flow confluence gear system, and then output through the climbing gear shaft. The output pinion meshes with the rack and pinion on the pile leg, and multiple lifting gearboxes At the same time, the lifting work of the self-elevating offshore platform is completed. The present invention adopts the combination form of two-stage NGW planetary gear train and four-stage fixed-shaft diversion-flow confluence transmission gear train. While ensuring the transmission ratio, it has compact structure, large transmission ratio, high bearing capacity, high stability, and large stable output torque. , 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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Patent Type & Authority Patents(China)
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