Course detail

Mechanic and Hydraulic Gears

FSI-QMHAcad. year: 2013/2014

The course deals with the following topics – Mechanic transmissions: shiftable gearboxes of working machines, epicyclic gears, final drives, differentials. Hydrostatic transmissions: elements of hydrostatic mechanisms - converters, elements for pressure regulation, elements for flow regulation, elements for flow direction regulation, auxiliary elements, proportional elements. Calculation of hydrostatic circuits, starting and braking, thermal balance. Hydrostatic circuits of working machines. Hydrodynamic transmissions: hydrodynamic couplings and hydraulic torque converters.

Language of instruction

Czech

Number of ECTS credits

Mode of study

Not applicable.

Guarantor

doc. Ing. Miroslav Škopán, CSc.

Department

Institute of Automotive Engineering (ÚADI)

Learning outcomes of the course unit

Students will be acquire knowledge of designing and construction especially of mobile machines from the selected field. They will widen and deepen their knowledge of design of regulative hydrostatic circuit – with respect to the latest development trends.

Prerequisites

Successful completion of the course is conditional on the basic knowledge of technical mechanics, physics, higher mathematics, machine parts and their mechanism, hydromechanics and principles of electrical engineering.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures. Teaching is suplemented by practical laboratory work.

Assesment methods and criteria linked to learning outcomes

Examination has a written and an oral part. In the written part student can obtain max. 50 points, which is necessary to be accepted for the oral part – 25 points. The oral part is evaluated as follows: 50% written part, 40% oral part, 10% work in the seminars.

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

The aim of the course is to widen and deepen students’ knowledge of machine parts and mechanisms and hydraulic machines with respect to the building and transport machines.

Specification of controlled education, way of implementation and compensation for absences

Course-unit credit is awarded on condition of having attended the seminars actively and completed all tasks, as well as fulfilled the requirements of continuous control

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Majmudar, R.S.: Oil Hydraulics Systems, McGraw-Hill 2003, ISBN 0-07-140669-7 (EN)

Recommended reading

Pavlok, B. – Hružík, L. – Bova, M.: Hydraulická zařízení strojů. VŠB – Technická univerzita Ostrava, 2007, 123 s. (CS)
ŠKOPÁN, M.:Hydraulické pohony strojů. Elektronické skriptum VUT FSI Brno, 2009 (CS)

Classification of course in study plans

  • Programme N2301-2 Master's

    branch M-ADI , 1 year of study, winter semester, compulsory-optional

Type of course unit

 

Lecture

39 hod., optionally

Teacher / Lecturer

doc. Ing. Miroslav Škopán, CSc.

Syllabus

1. Main components of mechanical gearboxes and their classification, epicyclic gear
2. Combined gears, wave and harmonic gears. Joints and jointed shafts
3. Friction gearing, variators, gearboxes for drive of lifting machines
4. Theory of hydrostatic mechanisms, continuity equation, Bernoulli’s relation
5. Hydraulic resistances in the hydrostatic mechanisms
6. Transmission of energy in the hydrostatic mechanisms – resistances H, R, D
7. Switching-in resistances of the same and different type, resistance network
8. Starting and braking hydrostatic mechanisms, heat calculation of hydrostatic circuits
9. Components of hydrostatic mechanism – converters and their parameters
10.Components for pressure, orientation and flow rate control
11.Proportional elements, auxiliary elements
12.The ground of hydrostatic mechanisms design
13.Hydrodynamic transmissions, combine transmissions

Exercise

18 hod., compulsory

Teacher / Lecturer

doc. Ing. Miroslav Škopán, CSc.

Syllabus

1. week Design of epicyclic gear including geometric condition
2. week Calculation of Hooke’s joint. Multichange box – range of transmission
3. week Driving drum of the conveyor belt, driving wheel of the earthwork machine
4. week Fluid of hydrostatic circuits and their properties
5. week Hydraulic loss in hydrostatic mechanisms
6. week Calculation of resistances across movement, acceleration, deformation
7. week Calculation of starting and braking hydrostatic mechanisms
8. week Heat calculation of hydrostatic mechanisms
12. week Calculation of operation factors of hydraulic circuits
13. week Application of hydrodynamic couplings and converters in mobile machines, devices

E-learning texts

Hydraulické pohony strojů. VUT v Brně 2009. Elektronická skripta
Hydraulické pohony strojů.pdf 4.76 MB