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Zasnova dvosmernega usklajeno delujočega dvostopenjskega teleskopskega hidravličnega valja
Mikuletić, Jan, Mikuletić, Jan (Author), Majdič, Franc (Mentor) More about this mentor... This link opens in a new window

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Abstract
Notranje vodenje hidravličnih cevi znotraj teleskopske nihajne roke predstavlja težavno in zamudno montažo, močno podraži stroške izdelave komponent in pogosto zahteva izvajanje servisnih storitev na omenjenem sklopu. Z nadomestitvijo starega sistema notranjega vodenja in povezovalne verige z dvosmerno delujočim dvostopenjskim teleskopskim hidravličnim valjem bi omogočili enostavnejšo povezavo notranjih hidravličnih cevi in se znebili opisanih težav. Magistrska naloga vsebuje pregled literature o že obstoječih rešitvah, zasnovo in izdelavo hidravličnega valja (HV), teoretične preračune, analize ter izvedbo meritev na izdelanem prototipnem HV. Valj deluje pričakovano usklajeno, pri manjših pretokih dosega teoretične hitrosti delovnega giba, ne dosega pa željene vlečne sile. Izmerjena vlečna sila znaša 21,4 kN, kar je dobrih 7 kN manj od teoretično izračunane sile povratnega giba.

Language:Slovenian
Keywords:hidravlični valji, teleskopski hidravlični valji, žerjavi, padci tlaka, mobilno hidravlična dvigala
Work type:Master's thesis/paper (mb22)
Tipology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Year:2019
Publisher:[J. Mikuletič]
Number of pages:XXII, 62 str.
UDC:621.226:658.512.2(043.2)
COBISS.SI-ID:16486939 Link is opened in a new window
Views:321
Downloads:180
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Secondary language

Language:English
Title:Development of double acting two-stage telescopic hydraulic cylinder
Abstract:
Internal guiding of hydraulic hoses within telescopic boom arm presents difficult and time-consuming installation, significantly increases costs of manufacturing components and frequently requires demanding maintenance. By replacing the curent inner hose guiding and construction chain with double acting two-stage telescopic hydraulic cylinder, we would enable easier connection of the inner hydraulic hoses and eliminate the described problems. The master thesis contains an overview of existing solutions and patents, development and construction of hydraulic cylinder, theoretical calculations, analyses and measurements on the constructed prototype. Hydraulic cylinder works synchronously correctly. At lower oil flows it reaches the theoretical speed of working movement, but it does not reach the desired pulling force. The measured pulling force is 21,4 kN, which is approximately 7 kN less than the theoretically calculated force of reverse movement.

Keywords:hydraulic cylinders, telescopic hydraulic cylinders, cranes, pressure drops, mobile hydraulic cranes

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