Analiza hidravličnega sistema zgrabljalnika s pobiralno enoto

Rakun, Andrej (author), Majdič, Franc (mentor)

V magistrskem delu je obravnavan problem tlačnih izgub, katerih rezultat je segrevanje hidravličnega olja. Posledica pregrevanja olja je slabše delovanje hidravličnega sistema in krajša uporabna doba hidravličnih sestavin. Delo zajema analizo delovanja stroja, hidravličnega sistema in vgrajenih hidravličnih sestavin, analitični preračun tlačnih izgub pri treh različnih pretokih, izvedbo meritev tlakov in pretokov pri delovnih obremenitvah ter analitični preračun padcev tlaka pri dejanskih pretokih. Hidravlični sistem ima nekaj kritičnih mest, kjer so tlačne izgube velike in bi bila potrebna menjava hidravličnih sestavin. Odstopanje med izmerjenimi in preračunanimi vrednostmi ni veliko. Glavna razlika med izmerjenimi in preračunanimi vrednostmi tlačnih izgub nastane pri toku kapljevine skozi modularni hidravlični blok.

• Language: Slovenian
• Keywords: hidravlika, zgrabljalniki, tlačne izgube, merjenje pretoka, segrevanje olja, hidravlična shema
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [A. Rakun]
• Year: 2019
• Number of pages: XXIII, 102 str.
• PID: 20.500.12556/RUL-109378
• UDC: 621.22:631.353.2(043.2)
• COBISS.SI-ID: 16844315
• Publication date in RUL: 31.08.2019

Secondary language

• Language: English
• Title: Hydraulic system analysis of the pick - up rake

Abstract

The master thesis discusses about the problem of pressure losses of hydraulic systems, which results in the heating of hydraulic oil. Oil overheating results in poor performance of the hydraulic system and shorter useful period of the hydraulic components. The work covers the analysis of the machine operation, the hydraulic system and the installed hydraulic comonents, the analytical calculation of pressure losses at three different flows, the implementation of measurements of pressures and flows at workloads, and the analytical calculation of pressure drops at actual flows. The hydraulic system has some critical points where the pressure losses are relatively high. There is not much variation between measured and calculated values. The main difference between the measured and the calculated values of the pressure loss is the flow of liquid through the modular hydraulic block.

• Keywords: hydraulic, rake, pressure losses, flow measurement, oil heating, hydraulic circuit