The utility model is mainly used to balance the internal and external air pressure of the reducer, that is, ventilation.When the reducer works outdoors or continuously, the temperature is too high, and the lubricant in the reducing agent evaporates into gas.Of course, it will expand.In order to avoid damage to the oil proof or the connection of the reducer, the plug at the position of the planetary reducer must be replaced before use to ensure that the gas in the gearbox is discharged. When the planetary reducer works at high temperature or for a long time, a large amount of heat is generated through the meshing of internal friction gears, and the temperature can reach about 8°C.The high-temperature part of the generated heat is transferred to the lubricating oil, and part of the generated heat is radiated into the air.As the inside of the planetary reducer is a space with good sealing performance, when the lubricating oil and air are heated, the internal pressure increases.The reducer oil seal fails due to external force applied to the seal.Seriously delayed oil, due to excessive leakage of lubricating oil, effective lubrication cannot be guaranteed inside, resulting in dry grinding of gear bearings of the reducer, shifting of gear bearings due to high temperature, which seriously affects the service life of the machine. Therefore, before the planetary reducer is usually used, the exhaust cover should be installed at a high position to balance the internal and external pressure, and avoid excessive internal pressure and oil seal failure.It is worth noting that under different conditions, different installation methods and different types of ventilation hoods have different requirements.Sometimes, the choice of installation method or hood type can be wrong, and often injection hoods.
