I. What lubricants are used in reducers?
1. Horizontal cycloidal reducer is lubricated by oil pool under normal conditions. The oil surface height can be maintained in the middle of the oil window. Cyclic lubrication can be used when the working conditions are bad and the ambient temperature is high.
2. Cycloidal pinwheel reducer is usually lubricated with 40 or 50 mechanical oil at room temperature. In order to improve the performance of the reducer and prolong the service life of the cycloidal pinwheel reducer, 70 or 90 extreme pressure gear oil is recommended. Lubrication oil should also be reconsidered when working at high and low temperatures.

1. Daily Maintenance and Fault Diagnosis of Concrete Mixing Station

1.1 Daily Maintenance and Fault Diagnosis of Mixing Main Building

The most important component of concrete mixing station is mixing main building. Therefore, in order to maintain the mixing station, it is necessary to maintain the main mixing building, that is, the main mixing machine, powder weighing, admixture weighing, water weighing, sand and gravel buffer hopper and inclined motor.

The planetary gear reducer matched with the Spearman mixer reducer was found to be damaged when it was used for more than nine months, which resulted in the failure of its normal use. The reducer model is YNF1110, transmission ratio is 500 and assembly type is V11. The YP250M-4 motor matched before the damage of the reducer works continuously in one direction for 25 K W, 1450 r/min, nominal transmission ratio i=500, 24 hours, ambient temperature is room temperature, and the working medium of the mixer is liquid or semi-liquid. In this paper, the causes of gear shaft damage of reducer are analyzed.

1 Physical and chemical examination