Cylindrical Gears with Increased Contact Area – Proposal of Application in Watercrafts Power Transmission Systems

2015 ◽  
Vol 236 ◽  
pp. 26-30 ◽  
Author(s):  
Michał Batsch ◽  
Tadeusz Markowski ◽  
Wojciech Homik
Keyword(s):  
Power Transmission ◽  
Point Contact ◽  
Surface Strength ◽  
Hertz Theory ◽  
Cylindrical Gears ◽  
Position Errors ◽  
Power Transmission Systems ◽  
Involute Gears ◽  
Maximum Contact ◽  
Two Bodies

Paper presents the method for obtaining maximum contact pressure of Novikov gears. Described surface strength calculation method is based on Hertz theory of two bodies being in point contact. What’s more the influence of gear position errors on maximum contact stresses has been presented. Also the comparison of Hertz stresses for Novikov and involute gears has been made.

Power Transmission Efficiencies and Friction Coefficients at Teeth of Novikov-Wildhaber and Involute Gears

1985 ◽  
Vol 107 (1) ◽  
pp. 74-81 ◽  
Author(s):  
A. Ishibashi ◽  
H. Yoshino
Keyword(s):  
Power Transmission ◽  
Gear Ratio ◽  
Experimental Results ◽  
New Techniques ◽  
Friction Coefficients ◽  
Cylindrical Gears ◽  
High Speeds ◽  
Involute Gears ◽  
Low Speeds ◽  
The Difference

New equations have been derived to calculate the power transmission efficiencies, at the meshing teeth, of two kinds of representative cylindrical gears, Novikov-Wildhaber and involute gears. The efficiencies could be calculated from the equations and the friction coefficients obtained by simple experiments with test rollers. In order to show clearly the difference in the power transmission efficiencies of the two kinds of gears, the authors designed and made two interesting gear pairs with a small number of pinion teeth (Z1 = 3) and with a high gear ratio (Z2/Z1 = 9) by applying new techniques developed by them. The effects of gear speed, tooth load, type of lubricant, etc. upon the power transmission efficiencies were clarified using two interesting techniques to measure the efficiency. The experimental results indicated that the efficiency of the Novikov-Wildhaber gears was appreciably higher at high speeds, while it was lower than the involute gears at the start of rotation and also at low speeds.

Continuous Power Quality Monitoring For Power Transmission Systems

2020 ◽  
Author(s):  
Carlos. A. Duque ◽  
Leandro Manso Rodrigues Silva ◽  
Guilherme Marcio Soares ◽  
Ildemar C. Deckman ◽  
Jose Luiz R. Pereira ◽  
...  
Keyword(s):  
Power Quality ◽  
Power Transmission ◽  
Quality Monitoring ◽  
Transmission Systems ◽  
Power Quality Monitoring ◽  
Power Transmission Systems ◽  
Continuous Power
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