1. Preparation and implementation before idle storage 1. Comprehensive inspection and cleaning: Before shutting down, conduct a comprehensive inspection of the reducer and sizing machine, clean the oil stains, flying particles and other debris on the surface and inside of the machine, and ensure that the surroundings of the heat sink, cooling fan and respirator are clean and free of blockage. 2. Lubricating system treatment: Drain the old lubricating oil inside the reducer, and use special cleaning agent to carefully flush the inside of the gear box. After cleaning, apply a thick layer of anti-rust grease (such as Vaseline or special anti-rust grease) on the exposed metal surface (such as the shaft extension end) to prevent rust. 3. Sealing and protection: Check and confirm the condition of the oil seal. If stored for 4-6 months, the oil seal lip may stick to the shaft or lose elasticity. It is recommended to replace the oil seal directly. Make sure the vents are not covered by paint, and use anti-rust primer and topcoat to repair any damage to the paint film on the housing. 4. Storage environment control: Store the reducer in a dry, well-ventilated place away from direct sunlight. Control environmental temperature and humidity Read More

Mainly reflected in the following aspects: 1. Tension control imbalance, causing physical damage to the yarn. The speed ratio of the reducer directly determines the output torque and speed of the motor. If the speed ratio matching is unreasonable, it will lead to deviations in the tension control during the weaving beam winding or pulling process. Excessive tension: It will cause the warp yarn to be over-stretched during unwinding, dipping or winding, resulting in excessive yarn elongation, damaged yarn strength, and increased end-breakage rate in subsequent weaving processes. Tension is too small or unstable: it will cause the yarn to relax and not be wound tightly, and even the yarns will shift, twist, and cluster due to insufficient tension during splitting, resulting in serious defects such as bundling and inversion. 2. The tension between the wet zone and the dry zone is out of balance, aggravating hairiness and breakage. The sizing process is divided into a wet zone and a dry zone, and each zone has different tension requirements. If the speed ratio of the reducer cannot accurately match the transmission of each process section, this balance will be destroyed. Excessive tension in the wet area: Yarns are prone to plastic elongation under high temperature and wet conditions. Read More

1. Traditional listening and appearance preliminary judgment methods: When the equipment is running or has just stopped, preliminary fault location can be carried out through the senses: 1. Screwdriver listening method: After stopping, put the screwdriver tip against different parts of the reducer casing and put your ear close to the screwdriver handle to listen. If the upper part of the gear box is loud, the gear needs to be inspected; if the bearing seat is loud, the bearings need to be checked; if the whole vibrates evenly, the installation or resonance needs to be checked. 2. Abnormal sound identification: Continuous 'buzzing' sound: mostly caused by gear wear, tooth surface gluing or excessive clearance. Sharp 'squeaking' sound or 'rustling' sound: It is most likely that the bearing is short of oil and the raceway or rolling element is worn. Intermittent 'clang' banging sound: It may be that the gear teeth are broken or the connecting parts (bolts, key pins) are loose, and the machine needs to be stopped immediately. 'Gurgling' sound: Insufficient lubricating oil or deterioration of oil quality leads to dry friction. 2. The vibration and spectrum analysis positioning method uses professional instruments such as vibration pens and spectrum analyzers for digital diagnosis: 1. Read More

1. Preparation and external inspection before disassembly. Before formal disassembly, it is necessary to cut off the power supply and wait for the reducer to cool to room temperature. Observe the appearance of the reducer, check whether there are cracks and deformations in the casing, whether the connection parts are loose, and whether there are traces of oil leakage in the casing seams, shaft extension end or oil drain port. 2. The key operations during the disassembly process are oil draining and cleaning: place an oil catch basin at the bottom, unscrew the oil drain plug and drain the gear oil. If you plan to reuse it, you need to filter impurities first and clean the oil near the oil drain port. Open the cover smoothly: Loosen and remove the fixing bolts of the upper cover (or side cover) in diagonal order. Use a jack screw or a copper rod to gently separate the upper cover and the base. Violent prying is strictly prohibited to avoid deformation of the joint surface and subsequent oil leakage. Position marking: Before taking out the transmission components, be sure to carefully observe and mark the meshing positions of the driving wheel, driven wheel and worm gear to provide a basis for subsequent accurate reassembly. Standard Disassembly: Use a puller or special tool to disassemble the bearing and Read More

Root cause one: lubricant failure or improper filling. If the lubricating oil is not replaced for a long time, it will deteriorate, the viscosity will decrease, and an effective lubricating layer will not be formed. Dry friction of the gears will generate a lot of heat. At the same time, the transmission resistance will increase, and the power loss will increase sharply. Too much oil will lead to poor internal heat dissipation and excessive pressure, while too little oil will aggravate friction and heat. Solution: Replace with new special gear oil and fill it quantitatively according to the standard scale. Root cause two: gears and bearings wear and age. After the equipment has been used for a long time, the gears wear, the bearing clearance becomes larger, the transmission accuracy decreases, and the running resistance increases. Not only does the body heat up, but the power transmission is insufficient, and the force cannot be exerted. If there is slight wear, the clearance can be adjusted and lubrication added. If the wear is serious, the gear bearing assembly needs to be replaced. Root cause three: long-term overload work. Frequent jamming and overfeeding put the reducer in an overload state for a long time, the internal load exceeds the standard, the temperature rises rapidly, and the transmission efficiency drops significantly. Long-term overloading will accelerate the accessories Read More

The following is an in-depth analysis and corresponding prevention strategies: 1. Cause analysis: The material quality and heat treatment process of the spindle or reducer shaft directly determine its fatigue resistance. If the selected materials are unreasonable (such as internal defects such as pores and inclusions), or the heat treatment is not in place (such as surface hardness not up to standard and core toughness poor), the fatigue resistance of the shaft will be greatly reduced. For example, some cast spindles are loose inside, like 'roasted steamed buns', and are prone to fatigue cracks under alternating stress; while some shafts are not surface treated after quenching and tempering, resulting in surface hardness far lower than the design requirements, accelerating early fatigue fracture. 2. Prevention strategy: Upgrade materials and forming processes: Prioritize the use of high-strength alloy steels (such as 42CrMo, 18CrNiMo7-6, etc.), and use full forging processes instead of castings. Forging can refine metal grains, tighten the structure, eliminate internal pores, and greatly improve toughness and impact resistance. Optimize heat treatment process Read More