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Course title Mechanization of Forestry Work I
Course code MežZ3046
Credit points (ECTS) 4.5
Total Hours in Course 121.5
Number of hours for lectures 24
Number of hours for laboratory classes 24
Independent study hours 72
Date of course confirmation 22/12/2020
Responsible Unit Institute of Forest Management
 
Course developers
Dr. sc. ing., Aleksandrs Saveļjevs
Mg. sc. ing., lekt. Aigars Strūbergs
Mg. sc. ing., pasn. Māris Davidāns
Dr. sc. ing., asoc. prof. (Emeritus) Ziedonis Sarmulis

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.