A stern shaft disassembly tool and a stern shaft disassembly method

Abstract

The invention relates to a stern shaft disassembly tool and a stern shaft disassembly method. The stern shaft disassembly tool includes a pull rod, a protective sleeve and two lifting snap rings; the pull rod includes a pull rod body and pull rods fixedly arranged at both ends of the pull rod body Lifting ears; the tie rod body is detachably fixed and penetrated in the stern shaft flange hole of the stern shaft to be disassembled, and a lifting snap ring is hingedly fixed at both ends of the tie rod body, which can be applied to the lifting snap ring. The stern shaft is then pulled out from the stern shaft bearing, and the stern shaft disassembly tool is used to fix the stern shaft with good stability, which can avoid the possibility of looseness and potential safety hazards when using the stern shaft. At the same time, it avoids the damage to the surface of the stern shaft and affects the use of the stern shaft; in addition, the setting of the protective sleeve avoids the rigid contact between the tie rod body and the flange hole of the stern shaft, Damage to the stern shaft flange hole is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of ship maintenance, in particular to a stern shaft disassembly tool and a stern shaft disassembly method. Background technique [0002] The basic task of the ship's shafting is to transmit the power of the main engine to the propeller, and at the same time, to transmit the axial thrust generated by the rotation of the propeller to the hull, so as to promote the movement of the ship. Please refer to figure 1 , figure 1 It is a schematic diagram of the ship shafting structure. As shown in the figure, the ship shafting generally includes a main engine 2, a thrust shaft 3, a thrust bearing (not shown), an intermediate shaft 4, a stern shaft 5, a stern shaft bearing 6 and a propeller 7. The front end of the thrust shaft 3 is connected with the main engine 2, and its rear end is fixed with a thrust shaft flange 31, and is connected with the intermediate shaft 4 through the thrust shaft flange 31. The propeller...

AI Technical Summary

Problems solved by technology

[0004] For the stern shaft of a large ship, the weight of the stern shaft reaches nearly a hundred tons. Since the material of the contact surface between the stern shaft and the stern shaft bearing is tin alloy, the material is relatively soft. During the pull-out process of the stern shaft, due to the The contact friction between the bearings and the inertial impact on the stern shaft caused by the tied cloth tape when pulling will cause damage to the contact surface between the stern shaft and the stern shaft bearing

In addition, fiber slings can be used to bind the surface of the stern shaft in order to prevent the surface of the stern shaft from being worn by the binding tape. However, since the surface of the stern shaft is relatively smooth, when the axial tension reaches a certain level, there is a risk of axial sliding

[0005] During the binding and pulling process, it is easy to contact with the corners of the flange of the stern shaft and the corners of the connecting bolts, etc. during the binding and pulling process, and the binding cloth is easy to be cut by the sharp corners, resulting in quality accidents

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