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Pendulum jaw crusher 900 x 500
Hladík, František ; Malach, František (referee) ; Malášek, Jiří (advisor)
This diploma thesis is concerned with a construction design of single toggle jaw crusher DCJ 900x500. In the first part, the theoretical background and ways of material disintegration are discussed. The second chapter describes types of material crushers in general, especially jaw crushers and their parts. The third chapter is concerned with calculations and the design of the most important parts of the machine. The fourth part consists of the crusher power calculation, design of the pendulum and its production technology. The last part includes the result of FEM analysis for the particular variant of pendulum production. The thesis also includes drawing documentation of the crusher and the pendulum.
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Design of self-balancing mobile robot
Bartončík, Michal ; Hrabec, Jakub (referee) ; Šolc, František (advisor)
This thesis treatise about design self-balancing wheelframe type of segway. Introduces the principle of segway, the original models and solutions other people. The simulation uses a mathematical model to determinate the characteristics of senzors. Selection the method of measuring the angle and implementation with the help of sensors. Furthermore, deal with engines for moving of model, multifunction I/O card and desktop board for processing signal from sensors. Their connections and attechments on the construction.
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Pendulum jaw crusher
Pitner, Jakub ; Jurásek, Jiří (referee) ; Malášek, Jiří (advisor)
This master thesis deals with structural design of pendulum for single toggle jaw crusher DC 110x70 and consists of several main parts. The first part focuses on the processing of mineral materials, especially on the process of mechanical uncoupling. The second part compares main characteristics of single toggle and double toggle jaw crushers. The third part deals with the structural nodes for the crusher DC 110x70. Another part is consisted of two variants for the pendulum construction with a comparison of the advantages and disadvantages. For the selected variant is carried out the stress control using Finite element method (FEM) in the program I-DEAS. The last part focuses on the positioning an exit slit for designed pendulum.
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Pendulum jaw crusher 1 600 x 1 250
Ješuta, Jiří ; Malach, František (referee) ; Malášek, Jiří (advisor)
This thesis deals with the design of the construction of a pendulum of a single toggle jaw crusher. The first part of this thesis treats the mechanical raw minerals disintegration. In the second part the characteristics of a single toggle jaw crusher and double toggle jaw crusher are compared. The third part addresses the calculation and the construction of the main components of the jaw crusher. Next part of the thesis consists of the calculation of the crushing force, the pendulum design, and the method of manufacturing a pendulum. The strength analysis of the designed pendulum using the finite element method (FEM) in program NX-Ideas is made in the last part of this thesis.
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Proposal of test equipment/method for quick verification of quality of welded joints
Zejda, Václav ; Hála, Michal (referee) ; Kubíček, Jaroslav (advisor)
This bachelor’s thesis is dealing with the proposal and the choice of the proper method for quick check of weld seams of ball pivot of automobile stabilizers created by the resistance welding method. The first, theoretical part deals with the resistance welding. The second part deals with a description of the production process and testing of the particular component. The last part contains personal proposals and an assessment of the suitability of use of each construction solution of simple mechanical devices for quality checking of the weld seam. The recommended method to use is the Charpy impact test which served as the base for designing the special test device.
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Pendulum excitation
Vrána, Jiří ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This thesis is focused on creating a model situation of excited pendulum with one degree of freedom that oscillates in both linear and nonlinear condition. The theoretical part describes several basic concepts of oscillation theory and states some examples of pendulum applicability. The practical part consists assembling of motion equations of model situations, based on which simulations programs are created. The thesis contains also concept of practical use of the nonlinear pendulum model.
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Mathematical modelling with differential equations
Béreš, Lukáš ; Šremr, Jiří (referee) ; Opluštil, Zdeněk (advisor)
Diplomová práce je zaměřena na problematiku nelineárních diferenciálních rovnic. Obsahuje věty důležité k určení chování nelineárního systému pouze za pomoci zlinearizovaného systému, což je následně ukázáno na rovnici matematického kyvadla. Dále se práce zabývá problematikou diferenciálních rovnic se zpoždéním. Pomocí těchto rovnic je možné přesněji popsat některé reálné systémy, především systémy, ve kterých se vyskytují časové prodlevy. Zpoždění ale komplikuje řešitelnost těchto rovnic, což je ukázáno na zjednodušené rovnici portálového jeřábu. Následně je zkoumána oscilace lineární rovnice s nekonstantním zpožděním a nalezení podmínek pro koeficienty rovnice zaručující oscilačnost každého řešení.
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Pendulum jaw crusher 700 x 300
Kopecký, Libor ; Malach, František (referee) ; Malášek, Jiří (advisor)
This diploma thesis deals with construction design of a pendulum for the jaw crusher DCJ 700x300. The first part of the thesis is dedicated to treatment of mineral materials with focus on minimizing minerals. The second part deals with devices used for crushing minerals, jaw crushers and their variants in particular. The third part is devoted to specific design of the jaw crusher based on assigned input. The next part deals with construction design of the pendulum and technology of its production exploring weldments and casts. The aim of this thesis is to perform a strength analysis of the chosen version of pendulum production using the FEM method. The diploma thesis includes drawing documentation of the jaw crusher and the pendulum.
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Periodic solutions to differential equations in modelling of motion of mechanical systems
Koukalová, Kateřina ; Nechvátal, Luděk (referee) ; Šremr, Jiří (advisor)
This thesis focuses on modelling the motion of mechanical systems using differential equations. The mechanical system is represented by a charged pendulum attracted by two charged particles. The thesis deals with the analysis of the differential equation describing the motion of the pendulum, in particular the singular points of the studied equation. We determine their number, type and stability. Based on the values of the parameters of the mechanical system, the singular points differ, phase portraits are drawn for each case.
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Test dummy validation - differences in human mechanical response
Literová, Lucie ; Jelen, Karel (advisor) ; Šorfová, Monika (referee)
Title: Validation of the test dummy - differences in human mechanical response Objectives: The main goal of this thesis was to verify the usability of the Dummy Hybrid III for crash tests in the transport industry (the front and side directions). Methods: In the presented thesis, experimental methods were used to achieve the goal. The measurement of small impacts in laboratory conditions was carried out using the pendulum of the Department of Anatomy and Biomechanics of the UK FTVS. The measurement was performed on humans as well as on the Dummy Hybrid III. We monitored the reactions in the thoracic spine (thoracic vertebra Th5) and on the top of the head after impacts by a pendulum on certain areas on the human body/dummy. Impacts were delivered in four different intensities to the forehead, temporal bone, chest, shoulder and thigh. The measured impact quantity was the impact velocity. The observed magnitude of the response on the human body and dummy was the magnitude of the resulting acceleration in the area of the Th5 thoracic vertebra and the top of the head. Results: The results of this work have expanded the knowledge in the field of crash tests in the transport industry. Thanks to the obtained results, there was verified the suitability of the laboratory model of the pendulum for further...
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