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Grapple saw for wheel loader
Roguljić, Adam ; Kubín, Martin (referee) ; Kašpárek, Jaroslav (advisor)
The aim of this thesis was to design and construct a claw collector for a pre-selected wheel loader. The loader was chosen based on the basic parameters of the specified machine (engine power, the useable load of the machine, the hydraulic system pressure and weight of the machine). The collector is used for the unloading or loading of wood material, in this case, the raw wood in the form of logs harvested and stored on a freight truck or vice versa. The load capacity of the claw collector is specified at 4500 kg. For the drawing documentation I used the graphic programs based on the CAD platform. Specifically, the program that I have chosen was AutoCAD from the software company Autodesk. I performed a preliminary calculation of strength and stability control of the machine. In addition I also prepared the complete design documentation in the form of drawings which include the detailed shop drawings of individual parts of the machine.
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Conceptual design of bridge crane 8 tonne
Franc, Šimon ; Pokorný, Přemysl (referee) ; Kubín, Martin (advisor)
This bachelor thesis deals with conceptual scheme of a bridge crane with carrying capacity of 8 tons. Intention of this thesis is to scheme out the main specifications and size of this bridge crane. First of all we design and calculate the main bridge girder. Afterwards we calculate and design the cross bars and the travelling wheels. At last the desigh of an electromotor for powering the movement of the bridge crane takes its place.
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Tower crane on the present
Gipka, Ondřej ; Pokorný, Přemysl (referee) ; Kubín, Martin (advisor)
The bachelor thesis deals with the issue of tower cranes nowadays. The thesis classifies tower cranes into groups according to main criteria including contemporary types of tower cranes from the world-known crane manufacturers. The aim of the thesis is to provide a comparison of different types of cranes with respect to key features typical for tower cranes in the particular groups, such as loading capacity, crane jib, load lifting, mobility etc.
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Study of truck trailers for road transport
Mainuš, Jiří ; Jonák, Martin (referee) ; Kubín, Martin (advisor)
This work aims to compare particular configurations of vehicle combinations for transport of unit loads and cargo loads. The main part of this work establishes legislation governing operation of the truck trains; and provides description of construction of the particular configurations of truck trains as well as comparison of these analysed truck trains with regard to selected criteria, especially the carrying capacity.
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Analysis the safety mechanism of the trailers
Pantůček, Michal ; Kubín, Martin (referee) ; Kašpárek, Jaroslav (advisor)
This diploma thesis is engaged in the analysis of a safety mechanism, which is a part of a truck trailer. This mechanism provides a safe and firm connection of a container to the trailer. Primarily abroll containers according to German standard DIN 30 722 are being transported. The introductory part of the thesis deals with the current traffic condition and the accident rate in the Czech Republic. Legislative requirements for safety elements of trailer technology for road transportation are further defined. They are followed by a recherche of industrial solutions for securing mechanisms. Consequently calculations to obtain necessary securing force were performed. An analysis of the mechanism kinematics was carried out then. A structural check of selected mechanism elements was carried out following the kinematics check. Further, an optimalization of a transom design was carried out followed by another structural check. The structural checks were carried out using both the analytical method and the finite element method. In conclusion design documentation was elaborated. This diploma thesis was elaborated in cooperation with the SVAN Chrudim s.r.o.
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Mobile Wood Splitter
Grác, David ; Kubín, Martin (referee) ; Škopán, Miroslav (advisor)
The aim of my bachelor thesis is design a mobile wooden log splitter according to the basic technical parameters: maximum pressure on the splitting wedge 90 kN, stroke 580 mm, diameter of timber to be cut to 450 mm and its maximum length to 1100 mm. Construction equipment was carried out as vertical.
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Design of lifting gear of bridge crane 8 tonne
Smrčka, Jaroslav ; Pokorný, Přemysl (referee) ; Kubín, Martin (advisor)
This bachelor’s thesis deals with design of lifting gear of 8 tonne bridge’s crane travelling crab. The aim of this bachelor’s thesis is to suggest main characteristics of the crane, such as lift height and lift speed. This thesis deals with choice of cable, hook, electromotor, gearbox and break, diameters of balancing and guide blocks and cable drum including strength calculation. Thesis includes complete design of block and its strength calculation.
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Design of doublebeam of bridge crane 8 tonne
Bobčík, Martin ; Pokorný, Přemysl (referee) ; Kubín, Martin (advisor)
This bachelor thesis deals with design of doublebeam of bridge crane (8 tonne). The purpose of this thesis is to design the main parameters of the crane bridge. First of all, I chose from the catalog wire rope hoist. I proposed preliminary dimensions of mainbeam and crossbeam. I made strength check of mainbeam and crossbeam. For attachment mainbeam and crossbeam I chose fitted bolts. I calculated required number of fitted bolts M12. From the standards I chose wheels. I checked the wheels to maximum contact pressure and service life. I chose bearings from catalog SKF. I checked the bearings to service life. I proposed dimension of shafts. From the rolling resistance and friction, I calculated the power output of the engine. At the last I proposed cable trolleys and control of the crane.
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Traveling Crab 360 t
Sláma, Ondřej ; Kubín, Martin (referee) ; Pokorný, Přemysl (advisor)
The topic of this diploma thesis is the frame of the foundry crane with load capacity 360 t. The frame is analysed by strength inspection and fatigue strength inspection according to norm ČSN EN 13001. The analysis are made by using finite element method on shell model. The diploma thesis was made in cooperation with Královopolská a.s. company.
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