his.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
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
  • html
  • text
  • asciidoc
  • rtf
Design, Verification and Manufacturing of a New Binding System for Crampons
University of Skövde, School of Technology and Society.
University of Skövde, School of Technology and Society.
2013 (English)Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
Abstract [en]

Crampons are a device composed of a framework containing prongs, a front-part binding and a rear-part binding system that are attached to the boots in order to climb through steep walls covered by ice, snow or rocks. Currently, the process to attach the binding system is complicated and time consuming. A new design of the rear-part binding system of the step-in crampon adapted to the current boot is therefore desired to create. The Five-Step Method is implemented to obtain the concept design. The refinement of the concept is then performed and the mechanism is designed based on the action of a spring. This improvement provides a simpler and faster attachment process to the boot and it does not require removing the gloves. The steps for the new fastening and unfastening process are lowered compared to the step-in crampon. The Value Engineering Method is used when establishing the materials and manufacturing process of the components. Chromoly steel AISI 4130 is determined for the most critical components suffering highest stresses. High Density Polyethylene polymer is used for the parts with the lowest demands concerning the stresses they have to bear. These materials stand extremely low temperatures and provide low density and high tensile strength. Commercial elements are used when possible to reduce the costs and simplify the design and assembly process. A CNC milling machine is used to manufacture the steel pieces with simple shape. The moulding process for steels is established for the steel components with more complicated shapes. Injection moulding is determined to produce the polymer parts. A simple and effective process is established for the assembly of the elements, which does not required high ability or specific tools. The design of the assembly provides the opportunity to recycle the materials. The functionality of the attachment mechanism is proved. It is verified that the critical components withstand the stresses created at them according to a security factor of 4. This is concluded accomplishing an analytical analysis and also using the Finite Element Method. The cost of the new product is estimated to be more expensive than the reference step-in crampon. The designed product weights almost the same than the current step-in crampon and it has reduced dimensions for storing it. It includes a security system that avoids the binding system being released even if a high force is applied to the system. It is important to regulate the binding system to the height of the rear-part groove of the boot and to fasten the security system tightly to avoid any clearances between the boot and the crampon. 

Place, publisher, year, edition, pages
2013. , 103 p.
Keyword [en]
crampon, binding, mechanical design
National Category
Other Mechanical Engineering Applied Mechanics
Identifiers
URN: urn:nbn:se:his:diva-8137OAI: oai:DiVA.org:his-8137DiVA: diva2:624866
Subject / course
Mechanical Engineering
Presentation
2013-05-21, G109, Högskolevägen 1, 28 Skövde, 15:45 (English)
Supervisors
Examiners
Available from: 2013-06-12 Created: 2013-06-03 Last updated: 2013-06-12Bibliographically approved

Open Access in DiVA

Design, Verification and Manufacturing of a New Binding System for Crampons(15989 kB)4509 downloads
File information
File name FULLTEXT01.pdfFile size 15989 kBChecksum SHA-512
2422da36f6e5999b270d0e89284f0e80f11a6ecebe246f0e4e644bb627cf5e7bf4ac1063195fe43de5530005ef3332e1904ea035a52e9b5a23cbd5001df728cf
Type fulltextMimetype application/pdf

By organisation
School of Technology and Society
Other Mechanical EngineeringApplied Mechanics

Search outside of DiVA

GoogleGoogle Scholar
Total: 4509 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 156 hits
CiteExportLink to record
Permanent link

Direct link
Cite
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
  • html
  • text
  • asciidoc
  • rtf