The Strength Analysis of Differential Planetary Gears of Gearbox for Concrete Mixer Truck

4th International Conference on Advanced Engineering and Technology

Bae, M.H.^1 ; Bae, T.Y.^2 ; Kim, D.J.^3

Dept. of Aviation Maintenance, Changwon Moonsung University, Changwon city

51410, Korea, Republic of^1

Dept. of Mechatronics, Changwon Moonsung University, Changwon city

51410, Korea, Republic of^2

Dai Ho Hydraulics Co Ltd, Changwon city

51568, Korea, Republic of^3

关键词: Bending stress;    Concrete mixer trucks;    Differential planetary gears;    Planetary Gears;    Reduction ratios;    Simple structures;    Strength analysis;    Strength problem;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/317/1/012010/pdf
DOI  :  10.1088/1757-899X/317/1/012010

来源: IOP

【 摘 要 】

The power train of mixer gearbox for concrete mixer truck includes differential planetary gears to get large reduction ratio for operating mixer a drum and simple structure. The planetary gears are very important part of a mixer gearbox where strength problems namely gear bending stress, gear compressive stress and scoring failure are the main concern. In the present study, calculating specifications of the differential planetary gears and analyzing the gear bending and compressive stresses as well as scoring factor of the differential planetary gears gearbox for an optimal design of the mixer gearbox in respect to cost and reliability are investigated. The analyses of actual gear bending and compressive stresses of the differential planetary gears using Lewes & Hertz equation and verifications of the calculated specifications of the differential planetary gears evaluate the results with the data of allowable bending and compressive stress from the Stress-No. of cycles curves of gears. In addition, we also analyze actual gear scoring factor as well as evaluate the possibility of scoring failure of the differential planetary gear.