Course detail

Earth Working Machinery

FSI-QZEAcad. year: 2023/2024

The course introduces with the working technology of the earthmoving machines, types of earthmoving machines, design of earthmoving machine drives, and the latest technology of control and driving of the earthmoving machines.

Language of instruction

Czech

Number of ECTS credits

3

Mode of study

Not applicable.

Guarantor

Ing. Jaroslav Kašpárek, Ph.D.

Department

Institute of Automotive Engineering (ÚADI)

Entry knowledge

Students are required to have basic knowledge of a technical mechanics, physics, higher mathematics, machine parts and their mechanism, physics of the materials and principles of the electrotechnical engineering.

Rules for evaluation and completion of the course

The verification of the knowledge acquired in the course: Written exam followed by an oral exam proofreading.

Course-unit credit is awarded on condition of having attended the exercises actively and worked out assigned projects. Presence in the exercises is obligatory.

Aims

The aim of this course is make students acquainted with the working technology of the earthmoving machines, types of the earthmoving machines according to assembly groups, and common structural dispose of the earthmoving machines. Students will learn about design of the working and driving assembly according to force requirements, and the latest technology of the control and driving of the earthmoving machines.
Ability to design a conception of the earthmoving machines, force proportion on the working device with a respect to a working technology. They will be able to design geometry and kinematics of the working device. They will also design of the optimal technological assembly for carrying out earthwork and determine their theoretical, technical and operational reliability.

Study aids

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

MARŠÁL, Petr. Stavební stroje. Brno: Akademické nakladatelství CERM, 2004. ISBN isbn:80-214-2774-4. (CS)
MAZURKIEVIČ, Izidor, Ladislav GULAN a Gregor IZRAEL. Mobilné pracovné stroje: teória a konštrukcia základných modulov. Bratislava: Slovenská technická univerzita v Bratislave, 2013. Edícia vysokoškolských učebníc. ISBN 978-80-227-3968-9. (SK)
Nichols, H. L. - Day D. A.: Moving The Earth: The Workbook of Excavation, Sixth Edition, McGraw-Hill Professional; 6 edition 2010, ISBN 978-0071502672 (EN)
VANĚK, Antonín. Moderní strojní technika a technologie zemních prací. Praha: Academia, 2003. Česká matice technická (Academia). ISBN 8020010459. (CS)

Recommended reading

Nichols, H. L. - Day D. A.: Moving The Earth: The Workbook of Excavation, Sixth Edition, McGraw-Hill Professional; 6 edition 2010, ISBN 978-0071502672
Vaněk, A.: Moderní strojní technika a technologie zemních prací, vyd. Acamedia, Praha, ISBN 80-200-1045-9, 2003

Elearning

eLearning: currently opened course

Classification of course in study plans

  • Programme N-ADI-P Master's 1 year of study, summer semester, compulsory-optional

Type of course unit

 

Lecture

39 hod., optionally

Teacher / Lecturer

Ing. Václav Mergl, Ph.D.
Ing. Jaroslav Kašpárek, Ph.D.

Syllabus

1. Technology of the earth work, classification of the earthmoving machines.
2. Main assembly groups of the machines.
3. Technical properties of a soil.
4. Methods of a soil disintegration and their energy demands.
5. Force effects between the soil and tool.
6. Engine devices of the earthmoving machines, determination of an engine power.
7. Hydrodynamic gear.
8. Hydrostatic gear.
9. Hydraulic system of the earthmoving machines.
10.Chassis of the earthmoving machines.
11. Transmission of the forces between the earthmoving machine chassis and soil.
12. Hydrostatic servo-mechanism of the earthmoving machines.
13. Brake system of the earthmoving machines, cooling system of the earthmoving machines.

Exercise

13 hod., compulsory

Teacher / Lecturer

Ing. Jaroslav Kašpárek, Ph.D.
Ing. Václav Mergl, Ph.D.

Syllabus

1. Technical assignment and development of the wheel loader.
2. Determination of the climatic variant marking of the multipurpose front loader for an area of the expected purpose.
3. Determination of the technical properties of a soil.
4. Calculation of the working machines resistances.
5. Evaluation of the cooperation between combustion engine and moment converter and calculation of the moving forces and machine speed.
6. Evaluation of an earthmoving machine engine power.
7. Design of the hydraulic generators for the working hydraulic circuits.
8. Calculation of the joint loading bearings of the wheel loader chassis.
9. Calculation of the steering moment and speed-torque characteristic of the wheel loader with the joint frame.
10. Calculation of the movement resistances of the tracked chassis of the excavator.
11. Design of a hydraulic generator for the servo-mechanism circuit.
12. Calculation of the loader brakes.
13. Calculation of the loss and heat formation in circuit of the working hydraulics and servo-mechanism, evaluation of the hydraulic circuit cooling of an earthmoving machine.

Elearning

eLearning: currently opened course