Installation method of ship single shafting without setting front bearing of stern shaft tube

An installation method and a technology for stern tubes, which are applied to ship parts, ship construction, transportation and packaging, etc., can solve problems such as the difficulty of shafting installation accuracy, and achieve the effects of improving installation efficiency, ensuring accuracy, and ensuring safety in use

Active Publication Date: 2010-06-09
JIANGNAN SHIPYARD GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the installation process of this type of shafting, it is very difficult to control the influence of hull deformation and ensure the installation accuracy of the shafting

Method used

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  • Installation method of ship single shafting without setting front bearing of stern shaft tube
  • Installation method of ship single shafting without setting front bearing of stern shaft tube
  • Installation method of ship single shafting without setting front bearing of stern shaft tube

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Embodiment Construction

[0026] Below in conjunction with the accompanying drawings, the present invention will be described in detail by taking a single-shaft installation method of a liquefied gas carrier with a volume of 22,000 cubic meters as an example.

[0027] The single shaft system of the liquefied gas carrier is as figure 1 As shown, it includes a propeller 1, an intermediate shaft 6 and a stern shaft 3 connected by a hydraulic coupling 5, and a stern tube rear bearing 2 and an intermediate bearing 4. Due to the positioning of the middle bearing of the shafting of the ship, it is impossible to follow the conventional shafting installation method with the front and rear bearings of the stern tube. Therefore, during the shafting installation process, how to control the influence of the hull deformation and ensure the installation accuracy of the shafting There is a certain degree of difficulty. For this reason, the present invention firstly determines the position of the stern tube bearing mo...

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Abstract

The invention discloses an installation method of ship single shafting without setting a front bearing of a stern shaft tube, mainly comprising the following steps of: determining the position of a boring hole of a bearing installing hole by using a tail datum point and a head datum point on a shafting central line as datum and adopting an illumination method; positioning a middle bearing by using the central point of a bearing installing hole at the front end of the stern shaft tube and the central point of the bearing installing hole at the back end as the datum and adopting the illumination method; and hoisting a stern shaft, a central shaft and a main machine and then connecting the central shaft with the stern shaft into single shafting. The invention initially positions the central bearing through adopting the illumination method twice to ensure that the installation precision of the ship single shafting without setting the front bearing of the stern shaft tube is effectively controlled, and can enhance the installation efficiency, ensure the installation precision of the shafting and accord with the requirements of the ship design, and the shafting installed by the installation method can run more stably so as to ensure the using safety of the bearing and the main machine.

Description

technical field [0001] The invention relates to a method for installing a ship's shafting system, in particular to a method for installing a ship's single shafting system without a stern tube front bearing. Background technique [0002] At present, the shafting widely used in various large cargo ships is usually arranged with a stern tube rear bearing, a front bearing and an intermediate bearing to support the stern shaft and the intermediate shaft. The precision control of the shafting installation is realized by positioning the front and rear bearings of the stern tube by the shafting cable and locating the positions of the intermediate bearing and the main engine by the load method. The concrete steps of this method are as follows: [0003] ① Measure the position of the shafting center line on the berth, and use drawing wire and lighting method to accurately locate the front and rear bearings of the stern tube based on it; [0004] ② After the ship is launched, adjust t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B9/00
Inventor 董三国徐昶川马杰刘果
Owner JIANGNAN SHIPYARD GRP CO LTD
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