Laboratory Device Detecting the Magnitude of the Static Friction Coefficient of Brake Lining

• Autorzy: Hrabovský Leopold , Hrbáč Roman

Identyfikatory

DOI

10.12913/22998624/134283

• Języki publikacji: EN

Abstrakty

EN

The paper describes the design of laboratory equipment, which was created for verification and determination of the value of the static coefficient of friction in the contact surfaces of the brake lining and the brake drum of the drum brake with external shoes by experimental procedure. Suppliers of brake linings state values of the friction coefficients which correspond to different operating temperatures, but do not state the values of the friction coefficient of the respective brake lining with regard to the state of contamination of the contact surfaces. In practice, brake contact surfaces are exposed to moisture, dust, lubricants and oils, and these weather and operational influences significantly affect the value of the coefficient of friction. The results of laboratory tests performed with two types of brake linings (commonly used in practice) (fabric, hardened rubber) show that the coefficient of friction of a given brake lining is strongly influenced by the state of contamination of the contact surfaces.

Słowa kluczowe

EN

friction coefficient; brake lining; dual-caliper drum brake

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2021
• Tom: Vol. 15, no 2
• Strony: 191--197
• Opis fizyczny: Bibliogr. 22 poz., fig., tab.

Twórcy

autor

Hrabovský Leopold

• VSB - Technical University of Ostrava, Faculty of Mechanical Engineering, Institute of Transport, 17. listopadu 2172/15, 708 00 Ostrava - Poruba, Czech Republic

• https://orcid.org/0000-0003-3700-8041

autor

Hrbáč Roman

• VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Electrical Engineering, 17. listopadu 2172/15, 708 00 Ostrava - Poruba, Czech Republic

• https://orcid.org/0000-0003-3161-063X

Bibliografia

• 1. Mádr V., Knejzlik J., Kopečný J., Novotný I. Fyzikální měření [Physical measurements]. (In Czech), SNTL Praha 1991.
• 2. Durna A., Fries J., Hrabovský L., Slíva A., Žarnovsky J. Research and development of laser engraving and material cutting machine from 3D printer. Management Systems in Production Engineering. 2019,28(1):47-52.
• 3. Fedorko G., Molnár V., Blaho P., Gasparik J., Zitrický V. Failure analysis of cyclic damage to a railway rail. A case study. Engineering Failure Analysis. 2020,116.
• 4. Hrabovský L., Borovský D. Laboratory Device for Checking the Functionality of the Elevator Rope Sensors. Management Systems in Production Engineering. 2020,29(1):59-64.
• 5. Hrabovský L., Dluhoš D. Calibration of transducers and of a coil compression spring constant on the testing equipment simulating the process of a pallet positioning in a rack cell. Open Engineering. 2019,9(1):631-640.
• 6. Hrabovský L., Koščák P. Detection and Change of Tension Forces Operating on Elevator Hoist Ropes. IOP Conference Series: Materials Science and Engineering. 2019,603(5):1-9.
• 7. Kuľka J., Mantič M., Kopas M., Faltinová E. Assessing the need for rope replacement in crane lifting equipment after change of crane operational parameters: Advances in science and technology Research journal. 2017,11(2):226-230.
• 8. Mantič M., Kuľka J., Kopas M., Faltinová E., Hrabovský L. Limit states of steel supporting structure for bridge cranes. Scientific Journal of Silesian University of Technology. Series Transport. 2020,108:141-158.
• 9. Mantič M., Kuľka J., Kopas M., Faltinová E., Petroci J. Special device for continuous deceleration of freight cableway trucks. Scientific Journal of Silesian University of Technology-Series Transport. 2016,91:89-97.
• 10. Michalik P., Dobranský J., Hrabovský L., Petruš M. Assessment of the manufacturing possibility of thin-walled robotic portals for conveyance workplaces. Advances in Science and Technology. Research Journal. 2018,12(1): 338-345.
• 11. Fries J., Hapla T., Neumann T. Optimum parameters of mining machines for specific conditions. In: International Multidisciplinary Scientific GeoConference SGEM, Sofia 2014, 435-442.
• 12. Brzdové obložení. Available at: www.sittech.cz/brzdove-oblozeni (in Czech) (Access: 17.04.2020).
• 13. MBL 5820. Available at: www.sittech.cz/mbl-5820 (in Czech) (Access: 07.01.2021).
• 14. MBL 6800. Available at: www.sittech.cz/mbl-6800 (in Czech) (Access: 07.01.2021).
• 15. MBL 9850. Available at: www.sittech.cz/wbl-9850 (in Czech) (Access: 07.01.2021).
• 16. Brzdové pásy. Available at: https://gambitgl.pl/cz/ produkty/brzdove-oblozeni/brzdove-pasy.html (in Czech) (Access: 17.12.2019).
• 17. Brzdy. Available at: https://bmc-tech.cz/c236-brzdy (in Czech) (Access: 08.01.20209).
• 18. Bubnová brzda s nastavitelným brzdným momentem. Available at: www.ktr.com/cz/produkty/ elektrohydraulicke-celistove-brzdy/ktr-stop-tb-t (in Czech) (Access: 17.04.2020).
• 19. Kotoučová brzda s nastavitelným brzdným momentem. Available at: https://www.ktr.com/cz/ produkty/elektrohydraulicke-celistove-brzdy/ktrstop-tb-s (in Czech) (Access: 17.04.2020).
• 20. Brake Lining. Available at: www.chinagrtech.com/ friction-material/brake-lining/ (Access: 26.01.2021).
• 21. SNH 507-606 CN.Available at: https://e-shop.exvalos. cz/snh-507-606-cn/ (in Czech) (Access: 18.07.2016).
• 22. Single point snímače. Available at: www.hbm.cz/kat- egorie/snimace-a-elektronika-pro-konstrukci-vah/single-point-snimace/ (in Czech) (Access: 23.09.2011).

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).