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Bucket elevator
Chromek, Jiří ; Škopán, Miroslav (referee) ; Jonák, Martin (advisor)
This bechalor thesis deals with design of vertical bucket elevator and formulate its technical report. Transported material is grain. The thesis is divided into several chapters, the first of which deals with a general description of the elevator, its structural design and drive. This theoretical part also build capacity calculations. In conclusion, the proposal is verified by checking the shaft to bend and twist.
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Bucket elevators
Žák, Zdeněk ; Jonák, Martin (referee) ; Malášek, Jiří (advisor)
This bachelor thesis deals with the transport equipment using as the main transport element buckets. To specify this is a device type of elevator, conveyor, digger and excavator, including companies producing these devices. Further work is focused on theoretical and technical approach to calculate where the theoretical part of the thesis deals with the mathematical expression shape layers and logarithmic spiral and in the technical part calculations required to design and determine the parameters of devices. The last section is an overview of transported materials.
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Bucket elevator
Havlena, Tomáš ; Pokorný, Přemysl (referee) ; Jonák, Martin (advisor)
The aim of this bachelor‘s thesis is the design of the bucket elevator for transporting grain according to the assignment. The first chapter is a brief literature review which deals with the construction of the elevator. The second chapter is drawn capacitance calculation and design of the drive. In the last part, there is a control of the individual components. The work includes drawing documentacion.
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Centrifugal bucket hoist
Caletka, Tomáš ; Kašpárek, Jaroslav (referee) ; Jonák, Martin (advisor)
This bachelor thesis deals with an engineering design of a centrifugal bucket elevator with transport height 6.5 metres and transport performance 40 000 kilograms per hour. The thesis focuses especially on a functional calculation of the elevator thanks to which a gear motor, band and bucket are chosen. This is followed by an analysis of a constructional solution with a strength check of a drive shaft and parallel keys as well as a calculation of a service life of bearings. Technical documentation according to the task is attached to the thesis.
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Centrifugal bucket hoist
Kotačka, Petr ; Malášek, Jiří (referee) ; Jonák, Martin (advisor)
This bachelor thesis deals with bucket elevator design for transport of dry, loose and non abrasive materials according to given parameters. In the introductory chapter a short search describes the concept of suggested solution. Functional calculation, designs and checks of individual proposed equipment elements are stated in the other chapters. In the design requirements for centrifugal bucket discharge as well as miscellaneous way of filling are preferred. Appropriate drawing documentation is enclosed with this thesis.
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Bucket elevator for transporting glass shards
Kopecký, Michal ; Malášek, Jiří (referee) ; Škopán, Miroslav (advisor)
This bachelor's thesis deals with the functional design of a bucket elevator for transporting glass shards with a lifting height of 10 meters and a nominal transport capacity of 60 tons per hour. The research part provides a brief introduction to the issues of bucket elevators and the current market for such elevators. In the subsequent sections, functional calculations are performed, and the selection of individual components is made. Lastly, the strength calculation of the drive shaft and sealing rings, as well as the bearing life assessment, are conducted. The thesis includes accompanying drawing documentation.
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The design of Pelton turbine for given parameters
Pavlíček, Tomáš ; Veselý, Jindřich (referee) ; Haluza, Miloslav (advisor)
The aim of this bachelor's thesis is to create a project of a small Pelton’s turbine for laboratory use, focusing on the design of nozzle and blade. Designing these two parts included beam measuring, calculating the losses in the piping and finding the working point of the pump. In its first part this thesis reviews the history, the operating principle and the main parts of the Pelton’s turbine. The next part includes finding the appropriate shape of nozzle and measuring the beam, followed by the calculation of lossy coefficient and efficiency of the nozzle from the measured values. The third part is dedicated to calculation of losses in the piping and finding the working point of the pump. In the last part, blade is designed.
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Design Optimization of Bucket Conveyors
Jonák, Martin ; Svěrák, Tomáš (referee) ; Zegzulka, Jiří (referee) ; Malášek, Jiří (advisor)
This thesis deals with a study of methods sufficient to describe the behavior of bulk materials (homogeneous and non-homogeneous) during their transport by bucket elevators in the application focused on the optimization of the bucket shape and also on the optimization of operating parameters of whole elevator. More specifically, this thesis is based on the studying and creating analytical and numerical computational models which are used for description of flows and deformations especially of particulate materials. Firstly, the thesis is focused on the process of discharging the bucket – the relationship among the shape of the surface of a particulate material and geometry, position and movement of the bucket. The beginning and way of discharge of the bucket will be determined. Secondly, the thesis includes the overall computational model of a bucket elevator which is based on discrete element method and presented in the case study. The goal is to determine the limits of some classical physical and mathematical descriptions.
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Bucket elevator
Karlík, Petr ; Malášek, Jiří (referee) ; Jonák, Martin (advisor)
This bachelor thesis deals with the functional design of the bucket elevator for the vertical transport of coke. The research section contains a brief introduction to the bucket elevator problematics. Other sections deal with the functional analysis comprising gravity discharge control. Engineering design of elevator's components is further focused mainly on the drive shaft control. To this thesis are attached appropriate drawings.
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Bucket elevators
Cajzl, Štěpán ; Jonák, Martin (referee) ; Malášek, Jiří (advisor)
The aim of this research thesis is to provide an overview of manufacturers that are using buckets for transportation or acquisition of material and the equipment of these manufactures. It is the bucket conveyors, bucket wheel excavators and bucket chain excavators. The next part of this thesis focuses on the theoretical approach towards the calculation when the shape of the surface of the particular material forms a logarithmic spiral. Within the technical part of the calculation this thesis focuses on forms of calculation of individual parts of the elevator. The last part is an overview of transportation materials and their characteristics.
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