| Course Unit Code | 338-0509/03 |
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| Number of ECTS Credits Allocated | 5 ECTS credits |
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| Type of Course Unit * | Choice-compulsory |
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| Level of Course Unit * | Second Cycle |
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| Year of Study * | Second Year |
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| Semester when the Course Unit is delivered | Winter Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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| Name of Lecturer(s) | Personal ID | Name |
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| HRU38 | doc. Dr. Ing. Lumír Hružík |
| BOV69 | Dr. Ing. Miroslav Bova |
| Summary |
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| The course Design of hydraulic mechanisms, students learn the principles of creativity in the design of simple and complex mechanical and technological equipment with hydraulic mechanizmem. Emphasis is placed on energy-saving hydraulic circuit structure, its high quality of energy and information transfer with respect to reliability, longevity and fulfillment requirements of the technological process. Particular emphasis is also placed on the design of parts of hydraulic circuits, their design, calculation of basic parameters and modeling of static and dynamic behavior of the hydraulic mechanism when changing input parameters of the machine. |
| Learning Outcomes of the Course Unit |
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| In the course Design of hydraulic mechanisms, students learn to solve basic problems of the synthesis of hydraulic circuits, ie. design of basic hydraulic circuits. They can suggest possible structures of the system with regard to functionality, accuracy of control, energy efficiency, environmental friendliness, operability, durability, operating costs and price. |
| Course Contents |
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Lectures Program
Week Contents lectures
1 Methodology design activities
Design work and its importance. Types of projects and their contents.
Algorithm design hydraulic mechanism using computer techniques. Accompanying technical documentation.
2 The design of hydraulic structures design mechanism.
The general structure of the hydraulic mechanism.
The basic structure of the hydraulic circuits.
3 Progressive track hydraulic mechanism and its parameters.
Basic parameters of the hydraulic mechanism.
Selecting the operating pressure. Choice of flow. The choice of power and control elements and criteria for their selection.
4 Accessories hydraulic circuit.
Sizing and selection of fluid lines connecting parts.
Principles of calculation of pressure losses. Temperature stabilization of liquid.
5 The variability parameters of the hydraulic circuit.
Basic physical properties of liquids and change their parameters influence pressure and temperature. Effect of parameter changes on the output behavior of liquids hydraulic mechanism for static and dynamic mode. Unsteady phenomena in the hydraulic mechanism.
6 Hydraulic actuators for the translational and rotational motion.
Stiffness and compliance engine, natural frequency motors.
Control of output parameters of the drive. Multi-engine hydraulic actuators.
7 Hydraulic circuit with accumulator.
Structural types of batteries and their basic parameters.
Calculation of the battery for the purpose - the source of pressurized fluid.
Battery-powered linear motors - starting, braking, energy storage.
8 circuits with built-in hydraulic valves.
Structural design and built-in valves management.
Hydraulic circuits with built-in valves. Emulsion and water hydraulics.
9 Proportional technology and servo technology.
Types of proportional elements and advantages of their use.
The basic parameters and characteristics of the proportional elements.
Examples of hydraulic circuits with proportional elements and determine basic parameters. Dynamic and static characteristics proportional elements and
circuits assembled from them.
Hydraulic circuit servo technology.
10 Hydraulic and electrohydraulic servo control circuits.
The structure of hydraulic servomechanisms for position control and speed.
Electro-hydraulic control systems and determine their basic parameters.
Static and dynamic characteristics, stability control system and accuracy of the transmission signal.
11 Energy-efficient hydraulic systems.
Secondary control and its use in mobile technology and testing.
Load sensing systems in mobile technology.
Energy-saving involvement in shaping technology.
Energy-efficient systems for handling heavy material.
12 Hydraulic systems of machinery in the industry.
Equipment steel mills and secondary metallurgy. Equipment for continuous casting steel. Rolling mill plates. Rolling thin sheets - winders, decoilers, slings, water treatment.
13 Hydraulic systems of machinery in the industry.
Curing presses and furniture. Injection molding machines for plastics.
Baling presses and scrapping scissors. Forging presses and manipulators.
Water works. Stage technician. Ecology
14 Hydraulic systems. Tightness of the hydraulic system and protection against lakage of fluids. Noise and hydraulic system means for its reduction. Environmentally degradable fluids and
possibility of their use, impact on the reduction parameters of the hydraulic circuit.
Program practicals and seminars + individual work of students
1 Practical demonstration projects, the first phase of P 1 and P 2 of the second phase.
2 Track hydraulic circuit according to the technological process, choice and selection of hydraulic components.
3 The calculation parameters of the hydraulic circuit.
4 Calculation of the tanks, heat exchangers, temperature regime, pressure losses.
5 Calculation of shock and pressure changes in the parameters of the hydraulicmechanism change in pressure and temperature.
6 Calculation of stiffness and compliance, natural frequency, the basic determination parameters of linear and rotary motors.
7 Calculation of charge for a particular purpose, battery-powered linear hydraulic.
8 Calculation of decompression, creation of hydraulic circuits of built-in valves water hydraulics.
9 Calculation and design of hydraulic circuits with proportional technology and servo technology.
10 Basic calculation and electrohydraulic servo control circuit parameters of the technological process.
11 Design and calculation of test equipment for dynamic testing
12 Calculation and design nadsynchronního braking control circuit design winding belt, battery option for building the pressure.
13 Proposal for a hydraulic circuit for a particular purpose and calculation of basic parameters.
14 Calculation of service life of hydraulic converters using ecological liquids. |
| Recommended or Required Reading |
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| Required Reading: |
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GÖTZ, W. Hydraulics. Theory and Application. Ditzingen: Rexroth Bosch Group + OMEGON, 1998. 291 s. ISBN 0-7680-0242-7.
FINDEISEN, D.; FINDEISEN, F. Őlhydraulik. - Hydraulics. Berlin – Heidelberg - New York: Springer Verlag, 1994. 765 s. ISBN 3-540-54465-8. |
SIVÁK, V. Projektování hydraulických systémů. Ostrava: VŠB-TU Ostrava,1990.
PIVOŇKA, J. a kol. Tekutinové mechanismy. Praha: SNTL, 1987.
KOPÁČEK, J. Hydrostatické převodové mechanizmy. Praha, SNTL, 1986.
PAVLOK, B., HRUŽÍK, L., BOVA, M. Hydraulická zařízení strojů. Ostrava: VŠB-TU Ostrava, 2007. 116 s. dostupné z: http://www.338.vsb.cz/wp-content/uploads/2016/03/Pavlok-hydraulicka-zarizeni-stroju.pdf
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| Recommended Reading: |
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NOACK, S. Hydraulics in Mobile Equipment. Ditzingen: Rexroth Bosch Group + OMEGON, 2001. 202 s. ISBN 0-7680-0886-7.
LIFT, H., HANSEL, M. Hydrauliksysteme in der Bau- und Kommunaltechnik. Würzburg: Vogel Verlag, 1991. 345 s. ISBN 3-8023-0445-4. |
NEPRAŽ, F., NEVRLÝ, J., PEŇÁZ, V., TŘETINA, K. Modelování systémů s hydraulickými mechanizmy. Brno: Bosch Rexroth, 2002.
KUČÍK, P., STRÁŽOVEC, I., KRIŠŠÁK, P. Hydraulický prenos energie. Mobilné pracovné stroje. Žilina: ŽU v Žiline, 2000. 384 s. ISBN 80-7100-725-0.
GÖTZ, W. Hydraulics. Theory and Application. Ditzingen: Rexroth Bosch Group + OMEGON, 1998. 291 s. ISBN 0-7680-0242-7. |
| Planned learning activities and teaching methods |
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| Lectures, Tutorials, Project work, Other activities |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Graded credit | Graded credit | 100 | 51 |