https://doi.org/10.46793/TIL2025.181D

RESISTANCES IN ELEVATOR TRANSMISSION SYSTEMS AND THE METHOD FOR THEIR DETERMINATION

Authors:

Abstract: The paper defines an experimental procedure for determiningthe efficiency coefficient of elevator facilities depending on the relative load of the cabin in operational conditions. Theexperiment was carried out on a passenger elevator with a rated load of 320 kg and a lifting height of 28 m. An analysis of the resistance in vertical lifting devices was performed, the most significant of which occur and are especially pronouncedin worm gear reducers and on the guiding system of the cabin and counterweight, where the type of guiding elements also has an influence.A particular problem is expressed due to the changing state of the contact surfaces (between the guide rails and the guide shoes) duringexploitation and the eccentric loading of the cabin. Also, the paper analysed the obtained measurement results to determine the dependenceof the efficiency coefficient of the facility concerning the relative load of the cabin.

Keywords: electric elevators, guide rails and driving mechanism resistances, efficiency determination

Pages: 181-188

The paper is available at the following link:

REFERENCES:

1. Qiao, S., Peng, Z., Zhang, J., Jin, L., 2023,Parameter Calibration and System Design of Material Lifting System for Inclined Shaft Construction, Applied Sciences, 13(9909). https://doi.org/10.3390/app 13179909
2. Al-Kodmany, K., 2015,Tall Buildings and Elevators: A Review of Recent Technological Advances,Buildings, 5, pp. 1070-1104. https://doi.org/10.3390/ buildings5031070
3. Bangash, M.Y.H., Bangash, T., 2007,Lifts, elevators, escalators and moving walkways/ travelators, 1st ed., Taylor & Francis group, London, United Kingdom, pp. 158-182.
4. Afonin, V. I., Makarov, L. N., Kruglikov, O. V., Rodionov R. V., 2010,Power Efficiency of Gearless Elevator Drive, Russian Electrical Engineering, 81(8), pp. 432–435. https://doi.org/10.3103/ S1068371210080067
5. Radosavljević, S. Z., Stojanović, B. Ž.,Skulić, A. D., 2018,Determination of Power Losses in Worm Gear Reducer, IOP Conference Series: Materials Science and Engineering, The 10th International Symposium Machine and Industrial Design in Mechanical Engineering (KOD 2018), 393. https://doi.org/ 10.1088/1757-899X/393/1/012050
6. Skulić, A., Stojanović, B.,Radosavljević, S., Veličković S., 2019,Experimental Determination of Worm Gearing Efficiency, Applied Engineering Letters: Journal of Engineering and Applied Sciences, 4(4), pp. 115-119. https://doi.org/10.18485/aeletters.2019.4.4.2
7. Miltenović, A., Tica, M., Banić, M., Miltenović, Đ., 2020,Prediction of temperature distribution in the worm gear meshing,Facta Universitatis, 18(2), pp. 329-339,https://doi.org/10.22190/FUME180120016M
8. Miltenović, Đ., Banić, M., Miltenović, A., 2010,Effect of lubricants on efficiency coefficient of worm gear transmitters, Proceedings of the 6th International Symposium about Forming and Design in Mechanical Engineering, pp. 163 -166.
9. Melnikov, P., Schegoleva, S., 2019,Methods of increasing the efficiency of the worm gear, International Conference on Modern Trends in Manufacturing Technologies and Equipment: Mechanical Engineering and Materials Science,https://doi.org/ 10.1051/matecconf/201929800001
10. Tamboli, N. B.,Todkar, A. S., 2015,Modeling, Design, Development, Testing & Analysis of Dual Worm Self Locking System for Improved Transmission Efficiency & Deceleration Locking Property, International Journal of Innovations in Engineering Research and Technology 2(12).
11. Vladić, J., Šostakov, R.,Brkljač, N., Ličen, H.,Živanić, D., 2002 – 2004, Research and development of electrically powered passenger elevators (in serbian), Project of the Ministry of Science and Technological Development, MIS 3.03.3214.B.
12. European Standard EN 81-20: 2020E: Safety rules for the construction and installation of lifts - Lifts for the transport of persons and goods - Part 20: Passenger and goods passenger lifts, Brussels, Belgium.
13. European Standard EN 81-50: 2020E: Safety rules for the construction and installation of lifts - Examinations and tests - Part 50: Design rules, calculations, examinations and tests of lift components, Brussels, Belgium.
14. Stawinoga, R., 1998,The Efficiency of Elevator Hoistway Equipment, Elevator Technology, 9, pp. 254-264.
15. Al-Kodmany, K., 2023, Elevator Technology Improvements: A Snapshot. Encyclopedia, 3, pp. 530-548,https://doi.org/10.3390/encyclopedia3020038
16. Zhang, X., Li, H., Meng, G., 2008,Effect of Friction on the Slide Guide in an Elevator System, Journal of Physics: Conference Series, 96,https://doi:10.1088/ 1742-6596/96/1/012074
17. Franzen, C. F., Englert, Th., 1972,Der Aufzugbau,Friedr. Vieweg + Sohn Verlag, Braunschweig, Germany.