Podizna rampa sa Scott-Russell mehanizmom

undergraduate thesis

• Title (english): Scott-Russell based lifting ramp
• Author: Karlo Bilas
• Mentor: Matija Hoić (mentor)
• Committee member: Neven Pavković (predsjednik povjerenstva)
• Committee member: Matija Hoić (član povjerenstva)
• Committee member: Stanko Škec (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

Zadatak ovog završnog rada je konstrukcija podizne rampe za podizanje industrijskog vozila s teretom između dvije razine industrijskog pogona, koja se mora temeljiti na Scott-Russell mehanizmu. Pri tome su neki od zahtjeva bili da se teret i vozilo nesmiju naginjati, da kompaktnost konstrukcije bude što bolja odnosno da zauzima što je moguće manji ugradbeni prostor i u konačnici da pogonska sila bude što manja. Pri odabiru i optimiranju pogonskog sustava težilo se također i da pogonska sila bude što ujednačenija kako bi i brzina podizanja bila relativno konstantna.
Kroz prvi dio rada provedena je analiza postojećih rješenja i radnih principa podiznih rampi, kako bi se definirala optimalna varijanta rampe za zadane projektne parametre. Nakon toga u drugom dijelu rada analizirani su odabrani pogonski sustavi rampe, s ciljem dobivanja odgovarajućih vrijednosti opterećenja s obzirom na dimenzije i ostala konstrukcijska ograničenja, te je na kraju proveden analitički proračun svih kritičnih dijelova konstrukcije i te su u konačnici generirani CAD modeli sa pripadajućom tehničkom dokumentacijom u programskom paketu SOLIDWORKS.

Abstract (english)

The task of this thesis is the design of a lift ramp for lifting an industrial vehicle with cargo between two levels of industrial facility, which must be based on the Scott-Russell mechanism. In doing so, some of the requirements were needed to be satisfied. Firstly the cargo and the vehicle were not allowed to be tilted. Secondly the compactness of the construction was needed to be as good as possible in order to occupy as small a pit mounting space as possible and ultimately to make the propulsion force as small as possible. When selecting and optimising the propulsion system, the aim was to make the propulsion force as uniform as it could to make the lifting speed relatively constant.
In the first part of the thesis, an analysis of the existing solutions and operating principles of lifting ramps was carried out, in order to define the optimal solution for the given project parameters. After that, the selected ramp propulsion systems were analyzed in the second part of the thesis, with the aim of obtaining the appropriate load values with respect to dimensions and other structural limitations.
Finally the analytical calculation of all critical parts of the construction was carried out. In the end, a CAD models with the corresponding technical documentation in the SOLIDWORKS software package were ultimately generated.

• Keywords: Podizna rampa; Scott-Russell mehanizam; industrijski pogon; nosiva platforma; pogonski sustavi
• Keywords (english): Lifting ramp; lift table; Scott-Russell mechanism; level differences
• Language: croatian
• URN:NBN: urn:nbn:hr:235:335688
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-09-25 12:07:37