Denna rapport presenterar hur en konstruktionsuppgift av ett automatiserat hybrid värmesystem har genomförts. Två värmekällor skulle inkluderas i systemet, primärkällan var en fastbränslepanna på 30 kW. Och som sekundärvärmekälla ett solfångarsystem med totalt tio solfångarmoduler. Värmesystemet skulle värma en bostad, en maskinverkstad samt ett maskingarage. Temperaturregleringen skulle styras med hjälp av automatik. För att inhämta data på de befintliga byggnader som var berörda av projektet gjordes fysiska mätresultat på plats, studier av ritningar, litteratur, internet källor samt samråd med den externa handledaren.Detta gav i slutändan ett system som är uppdelat i två olika delsystem. Ett system med en fastbränslepanna, och ett system med solfångarmoduler. Den uppvärmda median lagras i fyra ackumulatortankar, varje enskild ackumulatortank har olika volym och väljes med hjälp av automatik. Automatiken sköts av en så kallad PLC, som står för Programmable Logic Controller (Eng.). Denna PLC styr hela systemets elektriska utrustning, vilket innefattar pumpar, reglerventiler, avstängningsventiler och temperatur inhämtning från sensorer. Som presentations metod av resultatet valdes att använda ritningar som kan hittas som större bilagor i denna rapport. Samtliga formler som har använts för att dimensionera systemet återfinns under teori avsnittet, med kortfattade kommentarer. Vissa moment har fler än en lösning, vilket ställer krav på att även klara av att göra analyser av olika lösningar samtidigt ta i beaktande den externa handledarens önskemål.

<p>This degree project has been performed with Mega Teknik AB in Landskrona. The project has resulted in a workplace for the cable installers of Mega Teknik. The workplace contains a workbench and a cart.</p><p>The first stage in this project was to make an analysis of the current workplace to identify the needs the installers had.</p><p>The different principle construction proposals of how the workbench would look like and which functions it would have was made during brainstorming, in groups and alone. These proposals were compared against each other using a functional analysis that has been put up to get the principle construction that fulfilled most points in this analysis.</p><p>The proposal chose for further work was a cart and a bench with a module intends, the table got a formulation that creates a better reach for the installers.</p><p>This proposal was generated in Catia V5 to get a better overview of the suggested proposal.</p><p>During the primary structure phase drawings over all the products were made and the components were chosen. </p><p>Calculations were made and the product got the dimension required. </p><p>The final step was to build a full scaled model. The cart was sent to a company and the other parts were made in the university’s workshop by the student with help from others when needed. </p><p>The chosen components were bought and installed. </p><p>The project resulted in a fully functioning prototype and a complete series of drawings in order to produce the workplace.</p><p>In the conclusion discussion about future work and pros and cons with the chosen product were made.</p>

<p>In the report we have investigated four high-rise buildings with the intentions to find out witch parts are prefabricated and what relation can be found between structural design, prefabrication and the logistics. </p><p>After the investigation we noticed that the grad of prefabrication in each one of the projects is good in relation to what purpose the building have and the given background. During the report we found that layout – structural design – prefabrication – logistics is an order that we think can make the production of the building more effective if followed. We believe that the prefabrication of high-rise buildings have potential to grow and get more optimized in the future.</p>

<p>Examensarbetet har haft som syfte att få fram en färdig konceptlösning för att på ett effektivt sätt </p><p>kunna frakta kabeltrummor i stål med en ytterdiameter på fyra meter i en container </p><p>med endast 2.58 meters dörröppning, genom att göra kabeltrumman delbar. En lösning som </p><p>väl i drift utgör en betydande ekonomisk fördel för uppdragsgivaren. </p><p>Examensarbetet har resulterat i ett koncept som innebär att uteslutande</p><p>skruvförband används för att kunna dela och montera en kabeltrumma. Vi har under</p><p>arbetet konstaterat att vår lösning inte innebär försämrade hållfasthetsegenskaper.</p><p>Förutom konstruktionsfasen har arbetet även innefattat framtagande av en packplan</p><p>för container med standardiserade mått samt en monteringsanvisning.</p>

No description available.

<p>This degree project was conducted in collaboration with Husqvarna AB, the headquarters</p><p>of which are located in Jönköping. The aim was to further develop the filler cap found on</p><p>more or less the whole of the company’s range of chain saws, in order to make it more</p><p>user friendly.</p><p>The present filler cap is not easy to open and close, especially when wearing gloves, and</p><p>under difficult conditions, which creates problems and prolongs filling time.</p><p>On the basis of market surveys, different prototypes and tests, we have created an</p><p>ergonomically improved cap of a new shape, which can be moved in the axial direction,</p><p>thus making filling easier.</p>

No description available.

Det ständigt ökande trycket på minskande utsläpp och effektivare energianvändning driver utvecklingen av Scanias produkter. För att varakonkurrenskraftiga på marknaden behöver man leverera lastbilar med högre kvalitet och lägre bränsleförbrukning, det vill säga sänka transportkostnaderna förkunden. Ett steg i detta är att utveckla komponenter i fordonet som är optimerade iförsta hand med avseende på hållfasthet men även mot vikt och pris. En betydande andel av lastbilens komponenter är plåtfästen som ofta underprioriteras i produktutvecklingen. Examensarbetet fokuserade därför på att utveckla metoder för konstruktion av plåtfästen. En metod för att förbättra konstruktionerna är att arbeta med simuleringsdriven konstruktion. Simuleringsdriven konstruktion innebär att man inför simuleringar tidigt i konstruktionsprocessen och låter dessa bestämma utformningen av komponenten. Simuleringarna kan bestå av FEM-beräkningar så som egenfrekvensanalys och frekvensresponsanalys. Genom att iterativt arbeta med simuleringsdriven konstruktion kan man erhålla kortare ledtider och lägre produktionskostnader samt robustare och lättare komponenter. Scania eftersträvar att simuleringsdriven konstruktion ska vara ett standardiserat arbetssätt för konstruktörer. Examensarbetet har resulterat i en metodbeskrivning för konstruktörer som fokuserar på ämnet simuleringsdriven konstruktion. Metodbeskrivningen innefattar stora delar av konstruktionsprocessen och beskriver metoder och integrerade verktyg i CATIA V5 som är nödvändiga för att arbeta med simuleringsdriven konstruktion. För att metodbeskrivningen skulle testas samt få en pedagogisk följd konstruerades ett plåtfäste till en laddluftrörsinstallation från ett verklighetsbaserat problem på Scania. Med hjälp av metodbeskrivningen erhölls ett optimerat plåtfäste med avseende på hållfasthet, vikt och pris. Iterationsprocessen för det optimerade plåtfästet presenteras i metodbeskrivningen. / The ever increasing pressure on reducing emissions and improving energy efficiency is driving the development of the products at Scania. To be competitive in the market the company needs to deliver trucks with higher quality and lower fuel consumption in order to reduce transportation costs for the customer. One step in this is to develop vehicle components that are optimized primarily for strength but also towards weight and price. A significant portion of the truck's components are sheet metal brackets and these are often not prioritized in the product development. This thesis focuses on developing methods for the design of sheet metal brackets. Simulation driven design is a method for improving the components. Simulationdriven design implies that simulations are introduced early in the design process and the simulations determine the design of the component. The simulations may consist of FEM calculations such as natural frequency analysis and frequency response analysis. By iteratively work with simulation driven design the company can achieve shorter lead times and lower production costs as well as lighter and more robust components. Scania strives to make simulation driven design as the standardized approach for designers. This thesis has resulted in a guideline for designers who focus on the subject simulation driven design. The guideline includes most parts of the construction process and discloses methods and integrated tools in CATIA V5 that are necessary when developing sheet metal brackets with simulation driven design. For testing as well as getting an educational structure for the guideline, a sheetmetal bracket from a reality-based problem was constructed. By using the guideline an optimized sheet metal bracket, in terms of strength, weight and price,was obtained. The iteration process of the optimized sheet metal bracket is presented in the guideline.

This thesis has been carried out in collaboration with the IT Company MPQ consulting AB in Halmstad. The task we were assigned by MPQ concerned the development of a scooter that can be used year round. We have with the companydeveloped the criteria and requirements for the product in which the goal is toproduce a primary solution that meets the set criteria and fall within the project'sboundaries. The project involves a wide range of different design methods for idea generationand idea development. The project also addresses engineering methods such asprinciple and primary engineering. Occurringmethods in the project include FredyOlsson principle and primary engineering in cooperation with SVID's - Swedishindustrial design process, etc. The final solution will be presented in the form of sketches, CAD models withassociated drawings and a rendering from the program Keyshot.

This thesis was performed at Vendig AB which is a company that develops and sells products such as belt scrapers for conveyor. The thesis is divided into two parts, one part where it´s investigated which tension force is required to tighten Vendig AB´s scraper Hampus against the belt in a correct way. The second part is called mechanical design and here a new and more compact tension device is developed. Field studies has been conducted at a couple of Vendig AB´s costumers to get a knowledge base about how Vendig AB´s products are used, how they function and the environment they operate in. During one of the field studies the force between the scraper and the belt was measured. The result from the measurements, together with a report from LKAB [1], were evaluated and summarized in a table. The required force was recalculated for all different version of the scraper. After the tension force had been investigated the old tension device was evaluated and a requirement specification for a new was compiled in collaboration with Vendig AB´s group of technology. A number of concepts where then developed using the concept generator tool SCAMPER. One concept conformed very well to the requirement specification and was further developed. The concept was dimensioned by simulations in CAD, and basic drawings were made. The design solutions where discussed with suppliers and the design was updated. Finally a prototype was ordered to test and evaluate the concept. The tests revealed shortcomings in the prototype which has been evaluated and solutions has been discussed.