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Förbättringsförslag, lastknektar
Örebro University, School of Science and Technology, Örebro University, Sweden.
2014 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Suggestions for Improvement, Cargo Jacks (English)
Abstract [sv]

Örebro svets & hydraulik AB tillverkar lastknektar till Suzuki Garphyttan. På lastknektarna transporteras sedan stora rullar av tråd i stål. Knektarna har visat sig kollapsa efter viss tids användning och behöver därför en förbättrad konstruktion. Höga laster, tuff hantering samt ovarsamma lyft kan vara orsaker till att knektarna kollapsar. Örebro svets är väl införstådda var skadorna uppstår i nuvarande konstruktion och vill därför förstärka denna del och konstruktionen i sin helhet.

Kraven på den nya konstruktionen, förutom att vara mer hållbar, är att befintligt mått mellan benen ska följas och att knekten ska vara staplingsbar vid transport till galvanisering.

Nuvarande knektar har modellerats i CAD-programmet Pro/ENGINEER för att sedan analyseras med Finita Elementmetoden i beräkningsprogrammet ANSYS för att visa var deformation och spänningar uppstår. Efter att ett lösningsförslag tagits fram så visade det sig att maxspänningarna teoretiskt minskat och att spänningarna i kritiska områden minskat betydligt.

Abstract [en]

Örebro svets& hydraulik AB manufactures cargo jacks to Suzuki Garphyttan. The large rolls of wire in steel are then transported on the cargo jacks. The cargo jacks have been shown to collapse after some time of use, and therefore needs an improved design. High loads, rough handling and careless lifting may be reasons why the cargo jack collapses. Örebro svets is well aware where the damage occurs in the current design and would like to strengthen this aspect and the construction as a whole.

The requirements for the new construction, in addition to being more sustainable, are that standardized measures should be followed and that the cargo jack should be stackable for transport to galvanizing.

The cargo jacks have been modeled in CAD software Pro / ENGINEER and then analyzed with Finite Element Method in the FEM calculation software ANSYS to show the deformations and tensions. After a proposed solution has been developed so it turned out that maximum tension theoretically reduced and the tension in the critical areas decreased significantly.

Place, publisher, year, edition, pages
2014. , 31 p.
Keyword [sv]
konstruktion, FEM, lastknekt, svets
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-35587OAI: oai:DiVA.org:oru-35587DiVA: diva2:730906
Subject / course
Mechanical Engineering
Supervisors
Examiners
Available from: 2014-06-30 Created: 2014-06-30 Last updated: 2014-06-30Bibliographically approved

Open Access in DiVA

fulltext(2690 kB)354 downloads
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School of Science and Technology, Örebro University, Sweden
Mechanical Engineering

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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