Varnostna zavora za profil železniške tračnice

Repar, Tadej (author), Duhovnik, Jožef (mentor)

V nalogi smo obravnavali varnostno zavoro vozička, ki se mora v primeru pretrga vlečne vrvi zadržati na mestu. Naloge smo se lotili teoretično z dobro poznanimi silami na strmini in jo nadgradili z reševanjem konkretnega problema. Prikazali smo poznane in v praksi uporabljene rešitve za zaviranje dvigal ter jih uporabili kot osnovo za iskanje konstrukcijske rešitve varnostne zavore vozička. Reševanja smo se lotili metodično in ob koncu pripravili predlog rešitve. Končni koncept smo ovrednotili z metodo končnih elementov, s katero smo pri podanih obremenitvah izračunali varnostni faktor konstrukcije \nu = 2,95, ter prikazali vpliv različnih dejavnikov na potrebno silo zaviranja.

• Language: Slovenian
• Keywords: varnostna zavora, železniška tračnica, zagozda, sile na strmini, dvigala, metoda končnih elementov
• Work type: Master's thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-95553
• Publication date in RUL: 20.09.2017

Secondary language

• Language: English
• Title: Rail profile safety gear

Abstract

This thesis describes a railway car safety gear which should keep the car in place in the event that the tow cable breaks. We started by providing a theoretical description of the well-known forces on inclined planes and then proposed a solution for the problem at hand. We described well-established approaches related to elevator safety breaks and used them as the foundation of our search for a suitable railway car safety gear solution. The search was conducted methodically resulting a proposal of a solution. The final concept was evaluated with a finite element analysis, which was used to calculate the safety factor of the design \nu = 2,95, and we also demonstrated the influence of various factors on the braking force.

• Keywords: safety gear, rail profile, wedge, forces on an inclined plane, elevators, finite element analysis