338-0534/01 – Hydraulics of Working and Production Machines (HPaVS)
Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 4 |
Subject guarantor | doc. Dr. Ing. Lumír Hružík | Subject version guarantor | Dr. Ing. Miroslav Bova |
Study level | undergraduate or graduate | Requirement | Choice-compulsory |
Year | 1 | Semester | summer |
| | Study language | Czech |
Year of introduction | 2005/2006 | Year of cancellation | 2020/2021 |
Intended for the faculties | FS | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Students in the course apply knowledge of the subject Hydraulic elements and systems and applies them to the hydraulic systems of working and production machines. Students will learn the function of selected working and production machines and will be able to design a hydraulic drive or transmission. They can analyze the characteristics and behavior of the machine and drive and design or modify its control according to the requirements of the assignment. They will get acquainted with specific problems of individual machines and their drives, such as mobile machinery chassis drives, hydrostatic transmissions of mobile machines, drives of mobile working machines superstructure, energy-saving hydrostatic systems, accumulator systems, emulsion and water hydraulics etc.
Teaching methods
Lectures
Tutorials
Project work
Summary
In the course Hydraulics of Working and Production Machinesthe students will get acquainted with hydraulic systems of mobile working machines and with selected special problems of hydraulic systems of production machines. These include, for example, mobile machinery chassis drives, mobile machinery hydrostatic transmissions, mobile working machine superstructure drives, energy-saving hydrostatic systems, accumulator systems, emulsion and water hydraulics, etc.
Compulsory literature:
Recommended literature:
Additional study materials
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
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Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Syllabus of lectures:
1. Application of hydrostatic drives and transmissions in mobile working
machines. Specific requirements for mobile hydraulics equipment.
2. Travel drive mobile machines. The composition of the drive. Internal combustionengine:
construction, management characteristics.
3. Torque characteristics of the drive and working mechanisms. working point
drive. Types of gear mechanisms.
4. Hydrostatic transmission. Song transfer. Control hydrostatic transmission.
Characteristics of the hydrostatic transmission. The issue of filtering, cooling,
replenishment flow losses.
5. Multi-engine drives drive mobile machines. Implementation functions
Differential parallel embossed motors. Synchronous motors running. .
Slow-speed motors. Control the direction of travel. Servo-control mechanical-hydraulic
and electro-hydraulic.
6. Hydrostatic drives upgrades of mobile machines. Proportional valve for mobile technology. Offsetting the impact of load
pressure scales.
7. Energy-efficient source of constant pressure. Regulatory
Hydraulic control with constant pressure, constant power and constant
flow. Load-sensing systems with LS pump with regulatory control.
8. Hydraulic systems with batteries. Theory, applications in production machines.
9. Secondary control motors. Theory and applications. Starting and stopping
drive and the working mechanism.
10. Dynamic phenomena in hydraulic systems of work and production machines:
pressure and flow pulsation, vibration.
11. Built-in valves: applications in production machines.
12. Application of positional servomechanisms in production machines.
13. Emulsion and water hydraulics. Application to the presses, mechanized mining
reinforcement.
14. Drive to the optimal control parameters. Control systems, microprocessor
management. Anti-slip regulation.
Syllabus of practicals:
1. Repeat: brand hydraulic components. Basic hydraulic circuits.
2. Properties of hydraulic circuits working fluids: viscosity,
compressibility. Design a working fluid or working the machine.
3. Design and calculation of the hydraulic circuit with consideration of pressure losses and
efficiency.
4. Torque characteristics of actuators, mechanisms, choice of working point.
5. Design and calculation of the hydrostatic transmission.
6. Multi-engine drives. Synchronous motors running.
7. Program No. 1: Design of hydrostatic drive upgrades mobile machines.
8. Program No. 1: Design of hydrostatic drive upgrades mobile machines -
continue.
9. Energy-efficient regulatory system with LS oil delivering. Design,
calculation.
10. Measurement No. 1: Energy-efficient regulatory system with LS system
oil delivering.
11. Hydrostatic drive with accumulators.
12. Circuit design with built-in valves.
13. The dynamics of hydraulic drive system - the machine.
14. Position servo control for rolling mill quarto. Credit.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction