This paper focuses on the maintenance methods and quality standards for cylindrical gear reducers, proposes key points for disassembly and maintenance control of cylindrical gear reducers, introduces relevant precautions for disassembly and assembly of reducers, and clarifies the methods and experience for bearing replacement, clearance adjustment, and fit clearance measurement.<\/p>\n
\tSpare parts and tool preparation. Before starting work, conduct a comprehensive inspection and verification of all materials and spare parts used in the maintenance to ensure they are in good working order. Perform a comprehensive visual inspection and testing of all maintenance tools. Cable reels, power tools, and lifting tools must all be within their inspection period and pass visual inspection. After passing inspection, transport all tools to the designated location at the maintenance site for on-site preparation. The maintenance site will be managed according to a fixed-position system. Before starting work, complete the site layout, ensure all safety measures are in place, and confirm that the work permit has been processed and the site is ready to begin work. Work schedule handover. The person in charge of the work will explain safety precautions, maintenance quality requirements, and work schedule to the staff before commencing maintenance work at the work site.<\/p>\n
\t1. Remove the outer rings of each bearing (and mark them). Lift out the high-speed, intermediate-speed, and low-speed shafts of the reducer and place them in the maintenance area. Conduct a preliminary inspection of the reducer gears and shafts. No cracks, broken teeth, or missing pieces were found, and the gears were not loose on the shafts.<\/p>\n
\t2. Prioritize inspection of the wear condition of the reducer shaft head skeleton oil seal joint and shaft surface for timely brush plating treatment. The shaft surface wear should be uniform, with wear grooves less than 0.3mm; otherwise, treatment is required. Prioritize inspection of the wear marks on the bearing outer ring of the reducer housing bearing bore, recording the wear condition of the bearing retaining ring and end cover for targeted measurement.<\/p>\n
\t3. Drain the mechanical oil from the reducer and store it in a dedicated oil container. Clean the gearbox with kerosene and conduct a preliminary inspection of the inside of the reducer gearbox (clean up any oil stains on the floor promptly to prevent slipping). Based on any external leaks in the reducer gearbox, mark the points for focused inspection of the internal parts of the gearbox, ensuring there are no cracks or abnormalities. Clean the sealant from the joint surfaces of the upper and lower gearboxes and inspect the sealing surfaces.<\/p>","protected":false},"excerpt":{"rendered":"
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