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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.
61

Návrh obráběcího stroje typu desková horizontální vyvrtávačka / The design of plate horizontal boring mill

Vondrák, Pavel January 2011 (has links)
This master's thesis describes a design of horizontal boring mills. The first part is dedicated to description of the various types of these machines and their accessories. There are also described drives and linear guideways. There is a list of plate horizontal boring mills of Czech and foreign producers. The second part of this thesis deals with designing of comlete machine's bed and its slides (X-axis). Casting of the bed and its slides are designed for universal machining to the use of rolling or hydrostatic guideways. The drive of X-axis is also designed and it works in master/slave mode. The final result of this master's thesis is a 3D model of the machine in two variants, with hydrostatic and rolling quideways. Machining drawings of the bed for both variants are attached to this thesis.
62

Chlazení datového centra / Cooling of Data Center

Ostrezi, Jakub January 2011 (has links)
The aim of this work is to design data center placed into an ISO container used for transportation. Maximization of the space efficiency and minimization of the running costs are primary. This work also contains a measurement of data center electronic parts power consumption, a computational fluid dynamics model, a simulation of external thermal gains and a 3D model with basic technical drawings.
63

Návrh posuvové skříně osy X / Design of feed box X axis

Imrich, David January 2011 (has links)
The subject of this thesis is design of feed box for axis x of portal milling machine center FRP 300 from production of TOS Kuřim-OS, a.s. Thesis contains recherche in application field of rack and pinion drives for machine tools feed mechanisms, possible design solutions of given task and elaborate of the most appropriate solution. Thesis further includes calculations, 3D model and drawings of selected parts.
64

konstrukční návrh stroje pro řezání laserem a plasmou / Design of machines for laser and plasma cutting

Fryčová, Martina January 2012 (has links)
The aim of the thesis is the design machines for laser cutting and plasma workspace 2.0 x1, 8 meters. The work described technology laser cutting and plasma and the resulting demands on the machine. Longer work includes a search of design solutions, then the actual design, including the necessary calculations and drawings.
65

Návrh systému pohonu elevátoru skladovacího systému LogiMat / Design of the elevator drive for storage system LogiMat

Dosedla, Milan January 2012 (has links)
This diploma thesis deals with the design of the new elevator drive for storage system Logimat. Diploma is focused to design a new drive for a load up to 1200 kg and to adapt the elevator frame to the new drive design. In the first part is done research for suitable drive systems. There are followed by design and stress analysis. The second part deals with appropriate roller chain parameters calculation and the power output of electric motors.
66

Posuvná a zvedací plošina / Sliding and Lifting Platform

Kučo, Stanislav January 2014 (has links)
This thesis describes a project of a mobile stage device that will be used for a concert tour of Lucie. The first part characterizes the given task and expounds description and function of the device itself. The second part focuses on the design concept of supporting frames. This is followed by design and calculation of all mechanisms, actuators and construction of individual moving parts of a sliding and lifting platform. The last part verifies stability of the whole construction in accordance with appropriate standards. The thesis also contains technical documentation, which is to be found in appendix.
67

Návrh migrace části ICT infrastruktury do datového centra / Design of Part of ICT Infrastructure Migration to the Data Center

Kočíbová, Iveta January 2016 (has links)
This Master Thesis deals with the design of part of ICT infrastructure migration of two sites of the international company to the external data center. It analyzes the current status of company ICT, describes the virtualization infrastructure and its operational costs. Main part of the Thesis describes a possible solution of migration of virtualization infrastructure to external data center by using project management tools and methods. Finally, the Thesis summarizes project benefits for the company.
68

Simulátor čístícího stroje česlí / Simulator of Trash Rack Cleaning Machine

Boďa, Michal January 2017 (has links)
This diploma thesis deals with the realization of a simulator for a trash-rack cleaning machines in small hydroelectric power stations. This thesis contains adequate research about a trash-rack cleaning mashines. This diploma thesis is focused on detailed description of the hardware and software part of the created simulator and describes the realization of a control system, which verified the functionality of the simulator.
69

Electric bicycle rack for an urban environment : A bicycle rack that caters for the needs for electric bicycles in today’s society

Pålsson, Susanne January 2020 (has links)
More and more people commute to work, travel and use the electric bicycle as a daily means of transport. The need for bicycle racks, adapted for electric bicycles is growing and the demands on bicycle racks are higher than for bicycle racks for ordinary bicycles. This as they are very expensive to buy. On behalf of NOLA Industries, a bicycle rack for electric bicycles will be designed. The bicycle rack must also meet the need to recharge the batteries while the bicycle is parked and meet all found requirements from all stakeholders, which were collected during the project. The project is carried out by one student from Luleå University of Technology, who is studying M.Sc. in industrial design with a focus on product development. The project was carried out in Luleå with NOLA at a distance in Stockholm. The aim of the project was to come up with an idea for a bicycle rack that is suitable for public environments and that also fits into NOLA’s existing product range. At the beginning of the project, the time was planned using a Gantt scheme. The process used was CDIO consisting of four different phases. After the planning was completed, a benchmarking was made of how the situation looked and how the electric bicycles in today’s society work. The theory section was planned and introduced with a description of the line of technical design. The chapter was then followed up with relevant theory for the project. In order to find out what users think of existing bicycle racks and what were the desires for future bicycle racks, a survey was sent out. The work continued with several different information collection methods which were then followed up with creative work in the design phase. The final work included CAD models and renderings from keyshot of the finished concept. The final concept meets stakeholder requirements for an electric bike rack. It fulfill the need to be able to recharge the electric bike’s battery and to lock the electric bike in several points. The roof and the bicycle racks are equipped with led lighting, counteracting vandalism and theft of the electric bicycles. The roof also protects the electric bicycles against weather conditions.
70

Optimizing warehouse transportation : A simulation study of racking and slotting configurations

Johansson, Filip, Engblom, Erik January 2019 (has links)
Background Warehouse efficiency has gained a lot of attention in the recent years where racking layout and slotting of the SKUs are essential. The efficiency can be measured in the total traveling distance that occur in the warehouse. Two of the most central racking layout and slotting policies are the fishbone layout and ABC class-based slotting. These policies offer many new advantages for the traveling distance compared to others.   Objectives The purpose of this paper is to investigate how a combination of a fishbone layout and ABC class-based slotting affects the total traveling distance relative to a traditional layout with random slotting. This will then be analyzed in order to investigate to what degree it can be implemented depending on the situation a company has.   Methods The study was carried out as a simulation study, simulating the forklift traveling distance between four different warehouse layout and slotting configurations. This simulation was done by gathering of information in the form of observations, interviews, measuring and data from the EDI system of the company. The simulation was made in excel and featured eight possible scenarios depending on different events which could occur in the warehouse. The data in the study were then analyzed through a one-way ANOVA test, Scheffe’s post hoc test and t-Tests.   Results The result of the study shows that the different events which can occur in the warehouse is affected by a change in layout and slotting configurations. With the implementation of new layout and slotting configurations it is also shown that the forklift traveling distance in the warehouse can be reduced. The result also shows that the isolation of the effects that the respective layout or slotting policies provides reduces the forklift traveling distance individually as well as a combination would do.   Conclusions The conclusion is that the Fishbone layout with ABC class-based slotting is the optimal solution considering the reduction in traveling distance in a warehouse. When considering the implementation process and the potential benefits with the configurations, a general company is recommended to consider what amount of resources they are willing to invest before they carry out the implementation.   Delimitations This paper is delimited to the total travelling distance that occur in a warehouse because of the time restriction. The study will not examine the intangible part of a warehouse which means that the WMS- system will not be addressed. The paper will not create an investment calculus for the proposed solution. / Bakgrund Lagereffektivitet är ett område som dem senaste år fått mycket uppmärksamhet där layout av ställage och sortering av inventarier är väsentliga begrepp. Ett lagers effektivitet kan mätas i den totala transportsträckan som förekommer i ett lager. Två av de mest centrala principer för layout av ställage och sortering av inventarier är fiskbens-layouten och ABC klassbaserad sortering. Dessa principer erbjuder nya fördelar för den totala transportsträckan jämfört med de gamla.   Syfte. Syftet med denna studie är att undersöka hur en kombination av fiskben-layout och en ABC-klassbaserad sortering kan påverka den totala körsträckan för truckar gentemot en traditionell layout med slumpmässig lagersortering. Resultatet kommer därefter analyseras och undersökas hur det kan implementeras för andra organisationer med olika förutsättningar   Metod Tillvägagången för denna studie var att göra en simuleringsstudie som skall simulera den totala transportsträcka som sker i ett lager. Fyra olika konfigurationer av ställage-layout och sorterings-policys simulerades. Denna simulering skapades genom införskaffandet av information i form utav observationer, intervjuer, mätningar av lager och data från företagets EDI-system. Simuleringen gjordes i Excel med innehåll av åtta olika scenarion beroende på olika händelser som kan uppstå i ett lager. Resultaten i studien blir därefter analyserad genom de olika dataanalyseringstesterna, ANOVA: en faktor, Scheffes post hoc test och därefter genom t-Tester.   Resultat Resultatet av studien visar hur de olika händelser som kan uppstå i ett lager förändras beroende på konfiguration av ställage-layout och sortering-policy. Vid implementering av ny ställage-layout och sorteringskonfiguration framstår det att transportsträckan kan reduceras. Resultatet visar också att en isolering av effekterna de olika konfigurationerna ger bidrar precis som en kombination, till reducerad transportsträcka.   Slutsatser Slutsatsen av denna studie är att fiskbens-layout i kombination med ABC klassbaserad sortering är den optimala lösningen med avseende på att minska den totala transportsträckan i ett lager. När implementeringsprocessen and de potentiella fördelarna med konfigurationerna övervägs rekommenderas ett generellt företag att överväga vilke resurer de är villiga att spendera innan de implementerar en ny lösning.   Avgränsningar Denna studie är avgränsat till den totala transportsträcka som sker inom ett lager. Detta på grund av den tidsgräns som existerar. Studien kommer inte undersöka den immateriella delen av ett lager. Detta betyder att lagerhantering systemet inte kommer undersökas. Investeringskalkyler kommer inte att göras för den lösning som föreslås.

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