Mounting precision control method for stern door hinges

Abstract

The invention discloses a mounting precision control method for stern door hinges. The mounting precision control method comprises the steps: A, preparation work before mounting is conducted; B, a ground sample datum line is scribed on the horizontal ground according to theoretical data of a drawing; C, a stern door is hoisted to the designated position, specifically, the stern door is hoisted onto a pier position on one side of the datum line through a crane; D, horizontal measuring points of the stern door are selected; E, the precision of a theoretical centerline is examined, and transversecenterline positioning lines of the hinges are scribed; F, horizontal direction mounting lines of the hinges are scribed; G, machining is conducted, and a dummy shaft and a short sleeve are mounted;H, the longitudinal direction of the dummy shaft is adjusted; I, the transverse central positions of hinge seat plates are adjusted; J, hinge seat fixing spacers are mounted; K, adjusting spacers aremeasured and prepared; L, the adjusting spacers are subjected to point welding; M, drilling, tapping and hinge seat fixing are conducted; N, hinge seats are mounted; O, the adjusting spacers are welded; and P, the dummy shaft is dismounted, and hinge pin shafts are mounted. The mounting precision control method is suitable for mounting of the two or more sets of hinges of the stern door, a hatch cover and a gang plank, a mounting method is simple, and the precision is high.

Description

technical field [0001] The invention belongs to the technical field of ships, in particular to a method for controlling the installation accuracy of a stern door hinge. Background technique [0002] Large ships are usually equipped with 1-2 high-speed small boats as working boats, which are used to make up for the inability of large ships to perform tasks in shallow water areas. The traditional dinghy retracting device is generally operated by a crane, which is not only slow, but also not safe enough, so the stern slide technology emerged as the times require. The stern slide technology first appeared in foreign countries. At present, only a small number of domestic companies have this technology, which is mainly used in military ships and official ships with high functional requirements. [0003] Military ships and public service ships are generally long in structure and heavy in weight. There are hinges designed between the stern door, springboard and hull, and the weight...

AI Technical Summary

Problems solved by technology

[0006] The advantage of the present invention is that it overcomes the cumulative influence of the errors in the production, installation and welding of components in the past on the installation of the stern door hinge, and the risk that the dummy shaft cannot be disassembled due to the interference of the dummy shaft inserted into the hinge ear plate due to post-welding cooling. In order to solve the deficiencies, a method for controlling the installation accuracy of stern door hinges is provided. This method is suitable for the installation of two or more sets of hinges for small, medium and large stern doors, hatch covers, and springboards with regular shapes. The installation method is simple and the accuracy is higher. easy to guarantee

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