Analiza uzroka kvara zupčanika hidrauličke dizalice za utovar-istovar stupova za električne mreže

master's thesis

• Title (english): Failure analysis of a gear of a hydraulic crane for loading-unloading of poles for electrical networks
• Author: Filip Mužević
• Mentor: Suzana Jakovljević (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2024-12-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

Hidrauličke dizalice koriste hidrauličke sustave za prijenos velikih snaga. Cijeli sustav omogućava sigurnost, veću pouzdanost i upravljivost te dugi vijek trajanja pojedinih strojnih elemenata. U ovome radu opisane su vrste i primjena dizalica te njezini dijelovi. Osim toga, opisane su funkcije hidrauličkog sustava kao i njegove komponente, detaljno je opisan rad zupčanika, materijali koji su pogodni za izradu zupčanika te najčešći kvarovi zupčanika.. U eksperimentalnom dijelu rada analiziran je zupčanik koji se nalazi na glavnom stupu hidrauličke dizalice te je u vrlo kratkom vremenskom periodu postao neupotrebljiv i nesiguran za rad. Kako bi se utvrdili razlozi prekomjernog trošenja zupčanika analizirana je mikrostruktura, kemijski sastav te je izmjerena tvrdoća.

Abstract (english)

Hydraulic cranes use hydraulic systems to transmit high power. The entire system ensures safety, greater reliability and maneuverability, as well as a long service life of individual machine components. This paper describes the types and applications of cranes and their parts. In addition, the functions of the hydraulic system as well as its components are described, the operation of gears, the materials that are suitable for manufacturing gears and the most common failures of gears are described in detail. In the experimental part of the paper, the gear located on the main column of the hydraulic crane was analyzed and in a very short period of time became unusable and unsafe for work. In order to determine the reasons for excessive gear wear, its microstructure and chemical composition were analyzed and its hardness was measured.

• Keywords: hidraulički sustav; zupčanik; hidrauličke dizalice; trošenje
• Keywords (english): hydraulic system; gear; hydraulic cranes; wear
• Language: croatian
• URN:NBN: urn:nbn:hr:235:111827
• Study programme: Title: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering, Mechanics and Robotics, Autonomous Systems, Mechatronics and Robotics; Course: Materials Engineering; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka strojarstva (sveučilišni/a magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-11-30 13:11:08