Reducer knowledge

1.The reducer is a driving force transmission mechanism that uses a gear speed converter to reduce the rotational speed of the motor to the required rotational speed and obtain a large torque.

2. There are many types of reducers. According to the type of transmission system, they can be divided into gear reducers, worm reducers, planetary reducers and reducers composed of them; according to the proportional series of the transmission system, they can be divided into single reducers. Pole and multi-level reducer; according to the shape of the gear, it can be divided into cylindrical gear reducer, cone gear reducer and cone-cylinder gear reducer; according to the structure of the transmission system, it can be divided into expanded type, separated type and same tooth type. Embedded reducer.

3. The gears adopt two methods: oil pool lubrication and circulation system lubrication.

4. Lubricating oil should be maintained and replaced regularly. When a newly installed reducer is first used, it must be replaced with new oil after 10 to half months of operation. After that, the quality of the oil should be checked regularly (2-3 months). If it is found that it does not meet the requirements, it should be replaced immediately. Generally, the oil should be changed at least once every six months.

What are the reasons for crevice corrosion and shedding of reducer gears?

answer:

a. Materials, strength and shortcomings. The material of the gear does not meet the requirements; the key factor affecting the contact fatigue limit of the gear is the low strength after heat treatment, which cannot ensure the required contact fatigue limit of the gear. In addition, defects on the tooth surface or inside are also one of the reasons for insufficient contact fatigue limit.

b. Gear accuracy is weak. The gear processing and installation accuracy does not meet the requirements, such as poor gearing accuracy and poor movement accuracy. There are also cases where the center distance determination error of the housing of arc gears is very large.

c. The lubricating oil does not meet the regulations. The type of lubricating oil used is wrong. The viscosity of the finished oil is low and the lubrication properties are weak.

d. The oil volume is too high. If the amount of oil is too high, the temperature of the oil will be high, which will reduce the viscosity of the lubricating oil, destroy the lubrication properties, and reduce the working thickness of the floating oil.