Traktorski priključak za branje lješnjaka

master's thesis

• Title (english): Tractor operated device for harvesting hazelnut
• Author: Marcel Gojak
• Mentor: Dragan Žeželj (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

Ručna berba lješnjaka je vrlo iscrpljujući posao koji zahtjeva veliki broj radnika kako bi učinkovitost u radu bila što veća. Kako bi se smanjio izrazito visoki broj radnih sati berača u voćnjacima relativno velikih površina, primjenjuju se razni oblici i načini mehanizacije u berbi lješnjaka, kao i u njihovom skladištenju i sušenju.
U ovom diplomskom radu, napravljeno je detaljno istraživanje i vrednovanje postojećih uređaja za berbu lješnjaka koji se mogu pronaći na današnjem tržištu, razlaganje pojedinih funkcija berbe te dodavanje odgovarajućih mogućnosti rješenja svakom problemu. Slijedi izrada koncepata koji su detaljno opisani i vrednovani prema odgovarajućim kriterijima uz pripadajuće težinske faktore. Za odabrani koncept, izrađen je kontrolni proračun te naposljetku, računalni 3D model s pripadajućom tehničkom dokumentacijom.

Abstract (english)

Hand-picking of hazelnuts is a very difficult job and it is labour-intensive if maximum efficiency is to be achieved. In order to reduce the extremely high number of hours pickers work in orchards of relatively large areas, various forms and methods of mechanization are used n the hazelnut harvesting, storage and drying.
In this master's thesis, a detailed research and evaluation of existing devices for harvesting hazelnuts that can be found on the market are made individual harvesting functions are analysed and appropriate solutions to each problem are proposed. Furthermore, the proposed concepts are described in detail and evaluated according to appropriate criteria with the corresponding weighting factors. A control calculation is made for the selected concept and, finally, a computer 3D model with related technical documentation is developed.

• Keywords: lijeska; lješnjak; berba; vibracije; traktorski priključak; laki materijali
• Keywords (english): hazel; hazelnut; harvest; oscillations; tractor attachment; lightweight materials
• Language: croatian
• URN:NBN: urn:nbn:hr:235:498160
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-07-07 10:53:46