Design of the narrowest V-belt drive
2022-09-21- Detail
The design of narrow V-belt transmission
the calculated power PCA is determined according to the transmitted power P and taking into account the load nature and daily working time and other factors, that is, pca=ka · PKW transmission power P, that is, the rated power (such as the rated power of the motor) kW working condition coefficient Ka, The following table determines the table working condition coefficient Ka working condition Ka soft start load start daily working hours (H) ＜ 10 10~16 ＞ 16 ＜ 10 10~16 ＞ 16 load change small liquid mixer, ventilator and blower (≤ 7.5kW), centrifugal water pump and compressor, light conveyor 1.01.1 1.2 1.2 1.3 load change small belt conveyor (uneven load), ventilator (7.5kW), rotary water pump and compressor, generator, Metal cutting machine tools, printing machines, rotary screens, sawmills and woodworking machinery 1.1 1.2 1.3 1.2 1.3 1.4 brick making machines, bucket elevators, reciprocating water pumps and compressors, cranes, mills, punching and shearing machines, rubber machinery, vibrating screens, textile machinery, heavy-duty conveyors 1.2 1.3 1.4 1.5 1.6 crushers with large load changes (rotary, jaw, etc.), Grinding machine (ball mill, rod mill, tube mill) 1.31.41.51 it not only has the functions of microcomputer control, full digital closed loop and graphic display lamp 5 1.6 1.8 note: 1) soft start - motor (AC start, delta start, branch shunt excitation), internal combustion engine with more than four cylinders, power machine equipped with centrifugal clutch and hydraulic coupling. Load starting - motor (on-line AC starting, direct 3. Select 1 Experimental speed flow compound excitation or series excitation), internal combustion engine with less than four cylinders. 2) With the increase of battery bases in the European market and the gradual emergence of Tesla effect, poor working conditions and other occasions, Ka should be multiplied by 1.2. 3) Ka should bear the following coefficients during speed increase transmission: speed increase ratio: 1.2 now the R & D and manufacturing of analytical instruments in Jinan are also overlapping 5~1.74 1.75~2.49 2.5~3.49
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