Stern tube stern shaft pulling-out method

Abstract

The invention discloses a stern tube stern shaft pulling-out method, a stern shaft is inserted into a stern tube, one end of the stern shaft is connected with a propeller, the other end of the stern shaft is connected with a main engine through an intermediate shaft, and the intermediate shaft is installed on an intermediate bearing base; the method comprises the following steps: temporarily suspending an intermediate shaft detached from an intermediate bearing in the air; detaching the intermediate bearing from the base, and then sinking the intermediate shaft into the base; and pulling the stern shaft out of the stern tube and moved out of the cabin from the opening in the side of the cabin. The intermediate shaft is placed in the base of the intermediate bearing base nearby, the intermediate shaft does not need to be transferred to other areas of a cabin, a large number of manpower and material resources are saved, the time for pulling out the stern shaft is shortened, the construction efficiency of a ship is improved, meanwhile, the risk that the intermediate shaft falls off cannot occur, and the construction safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of ship building, in particular to a method for extracting a stern tube and stern shaft. Background technique [0002] At present, most of the power systems of large ocean-going ships use a low-speed main engine to connect the intermediate bearing, the stern shaft and the fixed-pitch propeller. When installing the stern shaft, the stern shaft must be passed through the stern tube from the engine room, and when it needs to be removed When removing the stern shaft, the stern shaft must be pulled out from the engine room. Before removing the stern shaft, the intermediate shaft connected with the stern shaft must be removed first. [0003] At present, after the intermediate shaft is removed, the intermediate shaft is first lifted by a hoisting crane, and then transferred to the bottom of the fixed lifting eye plate in the engine room, and the intermediate shaft is connected with the lifting eye plate through a s...

AI Technical Summary

Problems solved by technology

[0004] On large ships, the weight of the intermediate shaft is often more than ten tons, and it is time-consuming and wasteful to lift the intermediate shaft and then transfer it to other positions; and because the space in the engine room itself is relatively small, there is no area for placing the intermediate shaft separately, so the stern shaft Before pulling out, the intermediate shaft needs to be half-hanged in the air all the time, there is a certain danger, once it falls, serious casualties will occur

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