A method for hoisting split-type rudder propeller guide tube

Abstract

The invention relates to the technical field of ship construction, and particularly discloses a split-typerudder-propeller nozzlehoisting method. The method includes the steps of preparing a toolingbracket, fixing a nozzle on the bracket, welding ship hanging weights on a ship outer plate, integrally hoisting the nozzle and the bracket ontank-shaped trolleys on the surface of a building berth, integrally moving the nozzle to the position below a tugboat well, integrally hoisting the nozzle and the bracket intoa shaft hole of a rudder propeller through a chain block, and conducting installation and positioning. Before the hoisting, operation is completed in advance to make the rudder-propellernozzle and the center of equipment as centered as possible, and the workload of adjusting the shaft hole to center is reduced after the nozzle is hoisted by the chain block; the hoisting operation is simple, efficient and safe, and the workload which originally is completed in four hourscan be completed in two hours.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a method for hoisting a split rudder propeller duct. Background technique [0002] In the process of shipbuilding industry, because the diameter of the guide tube of the tugboat rudder propeller is larger than that of the trunk well, the part of the guide tube cannot be hoisted from the opening of the deck trunk well, so the guide tube must be hoisted by the crane to the bottom of the rudder propeller well. Install. The shape of the diversion tube is special. For safety considerations, it should be laid down at an angle of 90° and placed on the ground stably. Then weld 6 hanging codes on the outer plate of the tugboat (front, back, left, and right positions of the surrounding well), gradually pull them up with a chain hoist, and then slowly adjust the center of the diversion tube to face the center of the surrounding well (the gap between the two sides is only 5mm after cen...

AI Technical Summary

Problems solved by technology

Then weld 6 hanging codes on the outer plate of the tugboat (front, back, left, and right positions of the surrounding well), gradually pull them up with a chain hoist, and then slowly adjust the center of the diversion tube to face the center of the surrounding well (the gap between the two sides is only 5mm after centering) left and right), and pull the rudder paddles to the inside of the casing little by little to complete the positioning; however, in the prior art method, it is necessary to use multiple hand chain hoists to jointly position the draft tube, and the actual operation process should be based on the deviation of the draft tube , to adjust the chain hoist in the corresponding area, the whole positioning process takes a lot of labor and time

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