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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Development of asphalt removing tool for a tandem roller / Utveckling av ett verktyg för att ta bort asfalt på tandemvältar

Thorwaldsson, Henrik January 2014 (has links)
This master thesis have been done to come up with different concepts that could solve problems that is connected to vibrations in tandem rollers. The main problem is that the vibrations makes it harder to remove asphalt with the built in scraper, creating an uneven contact with the drum and the scraper. The new concepts should improve the machines ability to remove asphalt and decrease the amount of maintenance that is needed. To understand what the new tool needs to do some functional analyses have been done. To create new concepts the triz method have been used. The different concept was evaluated with a pugh matrix and swot. In the final part the focus is on how the best concept could become better. The final concept locks the scraper geometrically so it moves the same way as the drum. This makes it so it always are at the same distance to the drum. / Den här uppsatsen handlar om olika koncept som kan lösa problem som är kopplade till vibrationer från tandem vältar. Huvudproblemet som har varit i fokus är att vibrationerna från valsen försvårar möjligheten att ta bort asfalt med den inbyggda skrapan. Detta ger en ojämn kontakt mellan skrapan och valsen. De nya koncepten borde förbättra maskinen förmåga att ta bort asfalt och minska det nödvändiga underhållet. För att förstå vad det nya verktyget behöver göra har det gjort funktionsanalyser. För att genera nya koncepts har verktyget triz använts. De olika konceptet har utvärderats med en pugh matris och swot metoden. Sista delen av arbetet handlar om hur den bästa konceptet kan bli bättre. The slutgiltiga förslaget går ut på att man låser skrapa geometriskt så att den rör sig på samma sätt som valsen. Detta gör att den alltid håller sig på samma avstånd till valsen.
2

Design lehkého tandemového válce s elektrickým pohonem / Design of Light Tandem Roller

Paška, Tomáš January 2021 (has links)
The master thesis deals with the design of a light tandem roller with an electric drive. The final design of the machine is designed in regard to the knowledge from design and technical analysis and the shortcomings of current rollers. The purpose of this work is to design a tandem roller which will respect the ergonomic requirements of the operator.
3

Design tandemového válce / Design of Tandem Roller

Otruba, Radim January 2015 (has links)
The thesis deals with the design of the tandem roller with autonomous control. The proposal takes into account the technical nature of the machine and conceptual image of construction equipment intended for compaction work . To solve this problem the basic characteristic elements of autonomous means have been defined and subsequently applied to the proposal. An ergonomic aspect when operating and servicing the machine also has been taken into account. The final draft has been prepared and described in the practical part.

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