|
|
Oscillators RC for higher frequency range
Polách, Petr ; Petržela, Jiří (referee) ; Dostál, Tomáš (advisor)
This thesis deals with RC oscillators applicable in higher frequency ranges with the use of modern active elements. For individual function blocks (conveyor, current feedback amplifier, operational transconductance amplifier, voltage feedback amplifier) suitable models are suggested for the circuit simulator PSpice covering their characteristics on various levels, from an ideal one up to the full description of parasitic effects. On the basis of the study of recommended literature and company documentation various oscillator connections of the ranks 2 and 3 are suggested. By analysis through computer (PSpice, SNAP) the fulfilment of oscillation conditions, onset of oscillations were verified and by means of suitable simulations the effects of the impact on the parasitic characteristics of active elements was examined. Finally there are two oscillator connections stated and verified by simulations with the possibility of electronic retuning.
|
|
|
Presentation pavilion of WANEMI, a.s. paper-mill in Zábřeh
Wicherek, Štěpán ; Svoboda, Jiří (referee) ; Zemánková, Helena (advisor)
The multi-purpose exhibition hall and office building with the facilities is located in front of the manufacturing estate, situated in a green belt near the main access road. The height of the main office building helps to create a point of reference for the entire plant. A unique textile – lateral facade - STAMISOL FT 381 – is divided into basic, regular, quadratic segments. The textile facade is made to evoke a paper sheet. The exhibition pavilion is acros from the Office tower. The idea was to pick up on old industrial building design. Bringing the architecture into harmony with nature was also a key point of the design. Using a rough CORTEN steel construction parts in tree – shaped design was a purpose. The connecting tunnels are here to remind on old industrial conveyors. The office building rises out of ground wave in which all facilities, storage areas, waste managment units, and stuff parking lots are located. Ground wave also screens out the storage and facilities A lagoon serves as a integrating element for all building stuctures.
|
|
|
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.
|
|
|
Innovation of the bucket elevator
Hála, Ondřej ; Frýza, Josef (referee) ; Brandejs, Jan (advisor)
The bachelor thesis deals with the innovation of the bucket elevator. The thesis is focused on design modification of the elevator in the areas where the transported material is settled. Settled material causes decay and subsequent contamination of the fresh material. Main purpose of this paper is to propose design solution to improve cleaning of the feed boot of the bucket elevator. The next innovation deals with the modification of the marking system and efficient series of the elevators.
|
|
|
Design of lift positional table
Hájek, Ondřej ; Malášek, Jiří (referee) ; Pokorný, Přemysl (advisor)
This bachelor´s thesis describes the design of a lift positional table for overcome the height difference between the two roller tracks. Weight of the load is 550 kg and height difference of roller tracks is 2000 mm. The aim is to suggest the type of power lifting, power lifting functional calculation, functional calculation of the driver tray pallets and determining the main dimensions of the lifting table. The Appendix contains technical drawings of the lifting table and the table frame.
|
|
|
Driven roller conveyor
Pokorný, Pavel ; Kašpárek, Jaroslav (referee) ; Pokorný, Přemysl (advisor)
The thesis describes design of driven roller conveyor for transport products on Euro pallets of a total maximum weight of 600kg. The design includes determination of the respective sizes, capacities and strength, as well as design of a support frame and final strength control in the most affected areas. The thesis also contains documentation with drawings of complete conveyor, section of the conveyor and last section of the conveyor.
|
|
|
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.
|
|
|
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.
|
|
|
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.
|
|
|
Design of lift positional table
Bartel, Jindřich ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
Bachelor thesis deals with the design of lift positional table with pallet feeder for transporting loads weighing 1500 kg. The main scopes of the thesis are functional calculations lifting actuator, pallet feeder actuator and determining the main dimensions of lift table. Appendix contains the plan of lift and table frame.
|
guest ::
