Common problems and solutions of RV reducer
1. Worm gear wear. The worm wheel is generally made of tin bronze, and the matched worm material is hardened with 45 steel to HRC4555, or 40Cr hardened HRC5055, and then ground to a roughness Ra0.8μm by a worm grinder. The reducer wears very slowly during normal operation, and some reducers can be used for more than 10 years. If the wear rate is fast, it is necessary to consider whether the selection is accurate, whether it is overloaded, and the material of the worm gear, assembly quality, or utilization environment.
The use of lubricants and additives. Worm gear reducers generally use 220# gear oil. For reducers with heavy loads, frequent starts, and poor utilization environments, some lubricant additives can be used to make the gear oil still adhere to the gear surface when the reducer is stopped. Protective film to avoid heavy load, low speed, high torque and direct contact between metals when starting. Additives contain seal ring regulator and anti-leakage agent to keep the seal ring soft and elastic and effectively reduce lubricating oil leakage. Worm gear reducer
2. Worm bearing is damaged. When a failure occurs, even if the gearbox is well sealed, it is often found that the gear oil in the reducer is emulsified, and the bearings are rusted, corroded, and damaged. This is because the condensed water and water produced by the gear oil temperature rise and cool down after the reducer has been running for a period of time. Of course, it is also closely related to the bearing quality and assembly process. Establish a lubrication maintenance system. The reducer can be maintained according to the "five fixed" principle of lubrication work, so that every reducer has a responsible person to inspect it on schedule, and it is found that the temperature rise is obvious. If the temperature exceeds 40℃ or the oil temperature exceeds 80℃, the quality of the oil will decrease or decrease. If more copper powder is found in the oil and abnormal noise is generated, the utilization should be stopped immediately, and the fault should be eliminated and the lubricant should be replaced. When refueling, pay attention to the amount of oil to ensure that the reducer is accurately lubricated.
Third, the transmission pinion helical gear is worn. Generally, it is produced on the reducer installed vertically, which is closely related to the amount of lubricating oil added and the oil type. When installed vertically, it is easy to cause insufficient lubricating oil. When the reducer stops running, the transmission gear oil between the motor and the reducer is lost, and the gears cannot get the proper lubrication protection. When the reducer is started, the gears are not effectively lubricated, causing mechanical wear and even damage.
The choice of RV reducer installation location. If the location permits, try not to use a vertical installation. In the vertical installation, the amount of lubricant added is much more than that of the water safety installation, which is likely to cause the reducer to heat up and leak oil.
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