Helical gear worm reducer is a kind of transmission machinery with compact structure, large transmission ratio and self-locking function under certain conditions. Moreover, the installation is convenient and the structure is reasonable, which is more and more widely used. It is equipped with a helical gear reducer at the input end of the worm gear reducer. The multi-stage reducer can obtain a very low output speed, which has higher efficiency than a single-stage worm reducer, and has less vibration, noise and energy. low. Let's take a look at some common problems of helical gear worm reducer, so that we can solve it by ourselves.
1. Reducer heats up and leaks oil.
In order to improve efficiency, worm gear reducers generally use non-ferrous metals as worm gears, and worms use harder steel. Because it is a sliding friction transmission, more heat is generated during operation, which causes differences in thermal expansion between the parts of the reducer and the seal, thereby forming gaps on each mating surface. The lubricant fluid becomes thinner due to the increase in temperature and is likely to cause leakage. . There are four main reasons for this situation. One is the unreasonable combination of materials; the other is the poor quality of the meshing friction surface; the third is the incorrect selection of the amount of lubricant added; the fourth is the poor assembly quality and the use environment.
2. Worm gear wear.
The worm gear is generally made of tin bronze. The matched worm material is hardened to 45 HRC4555 or 40Cr HRC5055 and then ground to a roughness Ra0.8μm by a worm grinding machine. Reducers wear slowly during normal operation, and some reducers can be used for more than 10 years. If the wear speed is fast, it is necessary to consider whether the selection is correct, whether it is overloaded, and the material of the worm gear, assembly quality or the use environment.
3. The transmission small helical gear is worn.
It usually occurs on a vertically installed reducer, which is mainly related to the amount of lubricant added and the type of oil. In vertical installation, it is easy to cause insufficient lubricant quantity. 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 mechanically worn or even damaged due to lack of effective lubrication.
4. Worm bearing is damaged.
When a failure occurs, it is often found that the gear oil in the reducer is emulsified, and the bearings are rusted, corroded, and damaged, even if the reduction box is well sealed. This is because the condensate generated after the gear oil temperature rises and cools down after running for a period of time is mixed with water. Of course, it is also closely related to bearing quality and assembly process.
The above are the common problems of helical gear worm reducer shared by helical gear worm gear reducer manufacturers, so that we can solve it by ourselves.
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