Development and Application of the Special Tools for the Cleaning of Screw Fittings

The isolating switch is a device of isolating voltage in order to ensure the safety of the maintenance work of high voltage apparatus and equipment. It is installed by bolts on the mounting rack of electric equipment. The isolating switch is exposed outdoors and always affected by wind, rain, dust and so on, resulting in corrosion, sludge attachment and irregular thread shape of the isolating switch bolt, which influences the smoothness of screwing isolating switch bolts, and causes inconvenient disassembly and assembly. Therefore, it is necessary to regularly clean, and coat them with grease. The current cleaning method of isolating switch bolts is to disassemble all isolating switch bolts, put them into the box or the bucket with cleaner, and brush the isolating switch bolts manually. There is only one containing space inside the box or bucket, so the bolts of different models inside are mixed and disorderly, and therefore the sorting time is long. Besides, operators need to put hands into the cleaner while stirring and cleaning the isolating switch bolts, which is troublesome and easy to damage the operators' arms. In order to solve the above technical problems, this paper provides a cleaning tank of isolating switch bolts with orderly screw placement, shorter cleaning operation time, and easy and safe operation.