Method for disassembling bolt working on marine equipment

Abstract

The invention provides a method for disassembling a bolt working on marine equipment, which comprises a socket spanner, the socket spanner comprises a connecting rod and a socket, one end of the connecting rod is provided with a connecting plug, one end of the socket is provided with an inner hexagonal groove, the other end of the socket is provided with an inserting port for inserting the connecting plug, and the inserting port is communicated with the inner hexagonal groove. The method comprises the following steps that a hexagonal head of the bolt to be disassembled is cleaned, and paint skin and rust are removed; the socket is sleeved on the hexagonal head of the bolt to be disassembled; a welding rod extends into the socket from the inserting port of the socket, and a surfacing column is formed at the hexagonal head of the bolt to be disassembled through surfacing by using the welding rod; after waiting for a period of time, water is injected into the socket so as to cool the surfacing column and the bolt to be disassembled; and the connecting plug of the connecting rod is inserted into the inserting port of the socket, and the bolt to be disassembled is disassembled. The problem that in the prior art, bolts working on the ocean equipment are difficult to disassemble quickly, efficiently and smoothly is solved.

Description

technical field [0001] The invention belongs to the technical field of equipment maintenance, and in particular relates to a method for dismounting bolts working on marine equipment. Background technique [0002] With the development of my country's economy and science and technology, my country's ships and other marine equipment have increased rapidly, especially due to the needs of national defense security, a large number of ships have joined the service team in recent years. Then the maintenance work of marine equipment will increase a lot. If any equipment is to be maintained, the most basic work is to first remove the hexagonal bolts that fix it. Because these devices work in the marine environment for a long time, the bolts are prone to corrosion. Once the bolts are corroded, disassembly with a conventional wrench is either extremely inefficient or extremely difficult. A little carelessness may cause the bolts to break in the screw holes. Once such a situation occur...

AI Technical Summary

Problems solved by technology

If the bolts are seized at the scene, the normal dismounting torque cannot make them loose, so it is necessary to increase the booster rod, but due to space constraints, sometimes it cannot be increased, and even if the booster rod is added, the disassembly torque is not well controlled, which may easily lead to The bolt breaks; the second is to use a hammer to hit the hexagonal head of the bolt vigorously, and the bolt is loosened by vibration, but it is often limited by the space, and at the same time, it is easy to damage the marine equipment with a hammer; the third is to use a heated This method can cause the bolts to expand with heat and contract with cold. This method can not only eliminate the influence of the small space and compact structure on the disassembly of the bolts, but also reduce the influence of the corrosion of the hexagonal head of the bolts on the disassembly caused by the high-salinity environment in the sea, and can also prevent disassembly due to excessive torque. However, the existing methods for heating bolts are one is to use oxygen-acetylene wind welding or blowtorch, and the other is to use a high-frequency heater. The area heated by oxygen-acetylene wind welding or blowtorch is relatively large, which is difficult Accurately heat the bolt body directly, sometimes the external temperature is already high, but because the bolt is inside and there is a gap between the body and the heat transfer effect is poor, resulting in a huge temperature difference between the bolt and the body, and there may be parts inside the equipment that cannot withstand high temperatures , such as sealing rings and other material parts that are not resistant to high temperatures, if this heating method is used, the above-mentioned parts may be directly damaged; for the commonly used 5mm-50mm bolts, the high-frequency heater needs an output power of about 30kw. The price is about 15,000 yuan, which is relatively expensive, and the power of a 30kw high-frequency heater will have a greater impact on the power grid of small and medium-sized ships and other offshore facilities.

[0004] Therefore, in marine equipment such as ships with a small space and a compact installation structure, it is difficult for the above methods to quickly, efficiently and smoothly disassemble the bolts working on the marine equipment.

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