Course code MežZ3046

Credit points 4.50

Mechanization of Forestry Work I

Total Hours in Course120

Number of hours for lectures24

Number of hours for laboratory classes24

Independent study hours72

Date of course confirmation22.12.2020

Responsible UnitInstitute of Forest Management

Course developers

author

Aleksandrs Saveļjevs

Dr. sc. ing.

author lect.

Aigars Strūbergs

Mg. sc. ing.

author lect.

Māris Davidāns

Mg. sc. ing.

author Mežsaimniecības institūts

Ziedonis Sarmulis

Dr. sc. ing.

Prior knowledge

MašZ4021, Technical Graphics

Mate1033, Mathematics II

Mate4016, Mathematics I

Course abstract

The study course looks at the design of forest machines and the principles of operating the main mechanisms. The knowledge acquired makes it possible to understand the principles of force and capacity transfer in mechanisms and to calculate their characteristics.

Learning outcomes and their assessment

After the course, the student will have:
• knowledge of the design and operational principles of machinery for logging,(test)
• skills to carry out visual and technical assessments of forestry techniques, aggregating capabilities,(laboratory work)
• competence - provide responsible advice to forest workers on the feasibility of logging machines in the specific development of felling areas.(test)

Course Content(Calendar)

1 Introduction. Breakdown of forest machinery for mechanisation of forestry works. (lectures 2 h; laboratory works 2 h)
2 Forest machine characteristics, stability circuits..(lectures 2 h; laboratory works 2 h)
3 Internal combustion engines. (lectures 2 h; laboratory works 2 h)
4 Engine machines and systems. (lectures 2 h; laboratory works 2 h)
5 Transmission.. (lectures 2 h; laboratory works 2 h)
6 Rolling part, tires, tracks. (lectures 2 h; laboratory works 2 h)
7 Assembly systems. Hydromanipulators (lectures 2 h; laboratory works 2 h)
8 Control booths..(lectures 2 h; laboratory works 2 h)
9 Machines for logging machines. (lectures 2 h; laboratory works 2 h)
10 Wood recycling, attachment. (lectures 2 h; laboratory works 2 h)
11 Small logging techniques. (lectures 2 h; laboratory works 2 h)
12 Spiring of the felling area. (lectures 2 h; laboratory works 2 h)
13 Preparation of soil. (lectures 2 h; laboratory works 2 h)
14 Planting, sowing. (lectures 2 h; laboratory works 2 h)
15 Forest machine software. (lectures 2 h; laboratory works 2 h)
16 Introducing a job to the harvester system. (lectures 2 h; laboratory works 2 h)

Requirements for awarding credit points

All quizzes, passed and successfully defended laboratory works, and tests in e-study environments have to be successfully completed in order to obtain a refund, and a presentation on the work itself has been successfully defended.

Description of the organization and tasks of students’ independent work

Independent preparation for the control of knowledge by studying special literature and using the learning resources available in the e-study environment within the study course.
Test 1: Basic and operation of the construction of logging machines.
Test 2: Operation of the engine and force transmission of logging machines.
Test 3: Activities of electronic and hydraulic systems for logging machines.
Test 4: Metering equipment and construction and operations of logging machines.
Test 5: Information system for logging machines.
Test 6 in the e-study environment: Equipment for logging machines.
Presentation of own-initiative work.

Criteria for Evaluating Learning Outcomes

All the works of the laboratory, the quizzes written, and the checks must be defended. If all quizzes are written with a score of 7 balls and more, students can get the accumulating crediting rating as the average of the quiz ratings.
Evaluation of works in accordance with point 4.1 of the Statute for Studies

Compulsory reading

1. Kobcevs A. Lietišķā mehānika. Rīga, 2006.
2. Merkle D., Štraiders B., Toms M. Hidraulika. Rīga: Festo, 2000. 283 lpp.
3. Жуков А.B., Федоренчик A.C., Kopoбkин B.A., Бычек A.H. Лесные машины „Беларус”. Минск, 2001.
4. Uusitalo J. Introduction to forest operations and technology. Hameenlinna, 2010.
5. Davidāns M., Saveļjevs A., Strūbergs A., Traktortehnika meža darbos. Jelgava, 2019, Studentu biedrība Šalkone, 140 lpp.

Further reading

1. Miķelsons Z., Pīrs V. Spēkratu konstrukcijas. Rīga: Jelgava: LLU, 2008. 199 lpp.

Periodicals and other sources

1. Baltijas Koks. ISSN 1407-6667
2. International Forest Industries. ISSN 1392-1355

Notes

The study course is included in the compulsory part of full-time and part-time studies of the professional higher education bachelor study program “Forest Engineer” of the Faculty of Forestry.