The article discusses the issues of quantitative assessment of the internal resistance of oil in sliding bearings of the new designed two-line four-stage gearbox intended for use in transmission mechanisms of machines and devices. Based on the analysis of possible kinematic diagrams of the new constructive solution of reducer, it was determined that the directions of rotation of the driving and intermediate shafts coincide with the directions of rotation of block gears mounted on sliding bearings. In this case, the resistance in the sliding bearings becomes a useful driving force, which becomes a useful factor characterizing the internal driving force of the oil. This improves the reliability of the mechanism, as well as significantly reduce the energy consumption of the mechanical transmission. Based on the results of calculations, it was determined that the efficiency factor of the new constructive solution of a four-stage reducer is about 5% higher than in classic reducers.
Since in the new constructive solution of the gearbox the rotation direction of the sliding bearings and the rotation of the shafts coincide, the mutual displacement of the oil layers in the clearances of the sliding bearings, the partial contact of the roughness of the surfaces in contact with each other, and the displacement forces associated with the viscosity of the oil have a positive effect on the movement shafts and the efficiency factor of the mechanical system.
Anahtar Kelimeler: multistage gear box, sliding bearings, driving force, efficiency, angular velocity, resistance force
|
