Method for installing tail shaft on 10,000DWT roll-on-roll-off ship as well as dedicated roller tool

Abstract

The invention provides a method for installing a tail shaft on a 10,000DWT roll-on-roll-off ship as well as a dedicated roller tool. The method comprises the following steps: threading the tail shaft of the roll-on-roll-off ship in a tail shaft tube equipped with a front bearing, a middle bearing and a rear bearing in a safe and rapid manner. The dedicated roller tool comprises haff fasteners, a support and a roller, wherein one end of the support is mounted on one haff fastener via threads, and the roller is mounted at the other end thereof. By achieving the safe and rapid installation of the tail shaft on the 10,000DWT roll-on-roll-off ship, the invention can shorten the installation period; meanwhile, by using the dedicated roller tool, the invention can facilitate the installation and adjustment of the tail shaft and prevent the components in the tail shaft tube from being damaged.

Description

technical field [0001] The invention relates to a stern shaft installation method and a tool, in particular to a 10,000-ton ro-ro ship stern shaft installation method and a special roller tool. Background technique [0002] At present, the length of the tail shaft of the 10,000-ton ro-ro ship is generally more than 20 meters, and the dead weight is more than 35 tons. The fit clearance of the bearing is only 0.9 mm, and it is very difficult to install the stern shaft with a length of more than 20 meters into the stern shaft tube pre-installed with three bearings, mainly because the front end of the tail shaft crosses the middle bearing and the When there is still a certain distance, due to the weight of the tail shaft itself, the tail shaft bends and sags, causing the front end of the tail shaft to collide with the inner wall of the stern shaft tube and cannot continue to move forward. At this time, the center of gravity of the tail shaft is very close to the tail bearing, an...

AI Technical Summary

Problems solved by technology

[0002] At present, the length of the tail shaft of the 10,000-ton ro-ro ship is generally more than 20 meters, and the dead weight is more than 35 tons. The fit clearance of the bearing is only 0.9 mm, and it is very difficult to install the stern shaft with a length of more than 20 meters into the stern shaft tube pre-installed with three bearings, mainly because the front end of the tail shaft crosses the middle bearing and the When there is still a certain distance, due to the weight of the tail shaft itself, the tail shaft bends and sags, causing the front end of the tail shaft to collide with the inner wall of the stern shaft tube and cannot continue to move forward. At this time, the center of gravity of the tail shaft is very close to the tail bearing, so it cannot move forward. To adjust the angle and center line of the stern shaft outside the stern tube, it must be adjusted at the front end of the stern shaft inside the stern tube, and the wall thickness and length of the common tool lifting beam are affected by the space of the stern tube and the hull engine room. Raised the front end of the tail shaft, so had to be addressed with a new tail shaft installation method and tooling

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