Maintenance method and special maintenance device for ship rudder blade and rudder arm

Abstract

The invention discloses a rudder blade and rudder arm maintaining method and a special maintaining device. The special maintaining device comprises a body piece, a first transverse rod, a second transverse rod and a threaded piece. The maintaining method includes the following steps that (1) the special maintaining device is prepared; (2) a locking bolt in the center of a rudder shaft is taken out, the threaded piece is screwed into a locking screw hole, and screwing and fixing are achieved; (3) the first transverse rod is inserted into the body piece, and the first transverse rod is in the stress state; (4) a fixing nut, a stress arm plate, a bearing and the like of the rudder shaft are removed; (5) when the fixing nut, the stress arm plate, the bearing and the like of the rudder shaft penetrate the body piece to reach the position above the second transverse rod, the second transverse rod is inserted into the body piece, and the second transverse rod is also located in the stress state; and (6) the first transverse rod is taken out, and all maintaining parts are taken out. The rudder blade and rudder arm maintaining method and the special maintaining device have the comprehensive beneficial effects of being simple in structure, low in manufacturing cost, short in maintaining working period, low in cost, high in safety performance and the like.

Description

technical field [0001] The invention relates to the field of ship maintenance, in particular to a maintenance method and a special maintenance device for a rudder blade and a rudder arm. Background technique [0002] Before the rudder system of a steel ship is repaired, maintained or replaced with worn parts, it is usually necessary to disassemble the rudder arm, rudder bearing, rudder post, rudder stock and rudder shaft. The upper part of the rudder system, that is, the part inside the deck on the water surface, must be disassembled and disassembled, provided that the rudder blade and rudder shaft of the underwater part are completely separated. The existing methods all require the ship to enter the dock to retreat, and the bottom mechanism must be fixed, such as: binding the rudder blade at the bottom with a steel cable, and then tightening the steel cable from the stern side of the ship and then binding and fixing it on the stern side. Fasten the rudder shaft first, and ...

AI Technical Summary

Problems solved by technology

The existing methods all require the ship to enter the dock to retreat, and the bottom mechanism must be fixed, such as: binding the rudder blade at the bottom with a steel cable, and then tightening the steel cable from the stern side of the ship and then binding and fixing it on the stern side. Fasten the rudder shaft first, and then carry out the maintenance work on the upper part. This method has a greater risk of slipping, and due to geographical restrictions, it increases the workload of maintenance, is time-consuming, laborious, and inefficient, resulting in prolonged maintenance periods. High impact on work

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