WIS034 AGRICULTURAL MACHINERY 02/23/1990 01:28 PM D1 435 Lines Agriculture Mechanization/Engineering and Technical Support Services Agricultural Machinery (30-45 days) This unit deals with the general areas related with agricultural machinery. Topics include career opportunities, application of simple machines, selection of tillage and harvesting equipment, and the adjustment and maintenance of each. Objectives To acquaint students with employment information and career opportunities in the agricultural machinery industry To review the history of the agricultural machinery industry To develop student understanding of the application of the simple machines To develop student understanding of the various types of drive and bearing systems in agricultural machinery To increase student awareness of the limitations of the various metals used in agricultural machinery To provide students with opportunities to demonstrate and practice using proper methods for repairing various types of agricultural machinery To prepare students to develop and implement preventative maintenance plans for agricultural machines To develop student understanding of the principles associated with each unit of operation on tillage, planting, and harvesting equipment To acquaint students with procedures for adjusting and calibrating agricultural machines To emphasize to students the need to follow safety guidelines when working with agricultural machinery Competencies At the conclusion of this unit, students will be able to explain current employment information such as job descriptions, job availability, personal and educational requirements, working conditions, opportunity for advancement, and other factors relative to potential employment in the agricultural machinery industry and relate it to their personal needs and aspirations; trace the history of the agricultural machinery industry; describe power transmission mechanisms in agricultural machinery; identify and troubleshoot mechanical malfunctions and perform maintenance operations according to service manuals on the various types of bearings and seals; describe the physical properties of the different types of metals used in agricultural machinery and equipment; demonstrate repair procedures for various types of metals; describe tire construction, sizing, ratings, selection for specific application and winterizing procedures; identify the operating principles of the common types of machinery used in agricultural operations and identify the simple machine applied in the equipment; describe how particular agricultural machines work; demonstrate how to make routine adjustments on selected agricultural machines; evaluate the costs of leasing versus renting or purchasing a given piece of machinery; list safety guidelines for repairing and operating agricultural machinery; and identify major trends in agricultural equipment technology. Subject Matter (Basic skills integration areas are shown in brackets following title.) Careers - Current and future employment needs - Job descriptions - Training requirements - Working conditions - Opportunities for advancement - Other factors History and origin of agricultural machinery industry - Early development - Present - Future trends in development Simple machines [Science] - Lever - Wheel - Incline plane - Screw How machines transmit power [Science] - Belt drives Advantages Disadvantages Troubleshooting problems - Chain drives Types of chain drives Advantages Disadvantages Troubleshooting problems Repair techniques and procedures - Gear drives Types of gear drives Advantages Disadvantages Troubleshooting problems - Other types of drives Reciprocating Crank wheel and lever Crank arm and lever Cam drives - Safety release mechanisms Slip clutches Jump clutches Shear pins Bearings and seals - Plain bearings or bushings Solid bearing or sleeve Thrust bearing Split bearing Bearing lubrication - Types of antifriction bearings Ball bearings Roller bearings Needle bearings Lubrication of bearings - Troubleshooting plain bearings - Bearing maintenance - Premature failures - Seals Dynamic Static - Gaskets - Sealants Metals used in agricultural machinery and equipment [Science] - Parts manufactured from carbon steels Low carbon steel 1.hot rolled steel 2.cold rolled steel Medium carbon steel High carbon steel Very high carbon steel - Parts manufactured from cast iron Gray cast iron Malleable cast iron White cast iron Ductile cast iron - Cast steel parts - Drop forging parts - High Strength Low Alloy (HSLA) steels - Alloy steel parts How heat-treating affects alloy steel parts 1.quenching and tempering 2.normalizing 3.annealing 4.stress relieving - Equipment parts manufactured from stainless steels Milking and milk handling equipment Processed foods industry - Machine and equipment parts manufactured from aluminum - Repair techniques and procedures - Special electrodes to repair Tires and tracks [Science] - Tire construction - Industry code for tires - Tire inflation - Ballast - slippage - Duals - Tire failures - Radials and tractors - Types of track shoes - Crawler operator tips - Correct track tension and adjustment Types of machinery - Tillage tools Primary Secondary - Planting equipment Corn Small grains Forages Specialty crops - Harvesting machinery Small grain Corn Forage Specialty crops - Material handling equipment Augers, elevators, bunks, bucket elevators Dairy equipment Manure handling Feed processing 1.portable mills 2.electric stationary mills Crop drying equipment 1.bin 2.batch 3.continuous Units of operation of particular machines - Identify unit of operation - Identify parts of particular unit - Whole unit function versus machine operation - Troubleshooting - Example: Hay baler (square) History Identification of parts Units of operation 1.picking up function parts repair and adjustment 2.feeding mechanism parts function repair and adjustment 3.compressing mechanism parts function repair adjustment 4.tying mechanism parts function and sequence adjustment and checking 5.drive chain and chassis parts function of operation repair and adjustment Economics of machinery [Mathematics, Social Studies] - Leasing - Renting - Ownership Safety - Procedures in shop - Procedures in repairing agricultural machinery - Procedures in operating agricultural machinery Trends in agricultural machinery manufacturing Motivational Activities Invite a representative from an agricultural equipment manufacturer to give a class presentation. Visit a local agricultural implement dealership. Take a tour of an agricultural equipment manufacturer's facilities. View films, videotapes, and slides on topics of the unit. Post bulletin board displays featuring related unit topics. Learning Activities Participate in a Supervised Agricultural Experience program. Take part in classroom demonstrations. Report on the function and operation of a particular piece of agricultural equipment. Complete work sheet assignments. Assemble a piece of agricultural equipment. Repair a piece of agricultural machinery. Identify and describe the function of agricultural tools, equipment, and instruments. Instructional Materials Textbooks and References Farm Machinery and Equipment by Harris P. Smith and Lambert H. Wilkes. 6th ed. New York: McGraw-Hill, 1976. Farm Machinery Fundamentals by Marshall F. Finner. Madison, WI: American Publishing, 1985. Farm Power and Machinery Management by Donnell Hunt. 8th ed. Ames, IA: Iowa State University Press, 1983. Available from National Farm Book Company. Fundamentals of Machine Operation Series. Series consists of "Agricultural Safety," "Preventative Maintenance," and "Machinery Management." Moline, IL: John Deere Company. Available from National Farm Book Company. Machines for Power Farming by Archie Stone and Harold F. Gulvin. 3rd ed. Ann Arbor, MI: Books on Demand, 1977. Modern Concepts of Farm Machinery Management by Wendell Bowers. Champaign, IL: Stipes Publishing, 1970. Modern Farm Power by W.J. Promersberger et al. 3rd ed. Reston, VA: Reston Publishing, 1979. Principles of Farm Machinery by R.A. Kepner and Roy Bainer. 3rd ed. Westport, CT: AVI Publishing, 1978. Bulletins and Pamphlets The following are available from American Association for Vocational Instructional Materials. Ball and Roller Bearings. 901. 1986. Pesticides. 204. 3rd ed. 1988. Planning for an Irrigation System. 501. 1980. The following is available from Hobar Publications. Safe Operation of Agricultural Equipment. 10076 (Student manual). 1976. The following are available from Ohio Agricultural Education Curriculum Materials Service. Baler Operation, Service and Maintenance. 7011M. 1977. Combines and Combining. 7006M. 1981. Periodicals Agricultural Engineering Farm Industry News The Furrow Implement and Tractor International Harvestor News Computer Software The following are available from Hobar Publications. Ag Machinery Safety and Related Review. Apple, IBM, TRS, Macintosh. Chains and Belts. Apple. Introduction to Machinery Management. Apple. Machinery Cost. Apple, IBM, TRS. Machinery Selection. Apple. Preventive Maintenance. Apple, IBM. The following is available from Mid States Agri-Technology Associates, Ltd. Micro-Tutor: Farm Machinery. Apple, IBM. On-line Computer Networks The following are available from Ag Ed Network, AgriData Resources, Inc. Comparing Combine Efficiency. HS152. Comparing Planting Equipment. HS151. Delta Machinery Needs. HS91. Great Plains Machinery Needs. HS90. New Tractor Operating Costs. HS154. Laboratory Resources The following are available from National Farm Book Company. Fundamentals of Machinery Operations Student Workbooks Fundamentals of Service Student Workbooks Films, Videotapes, and Slides The following are available from Ideal Pictures Film Library. Bringing It Home. (16mm film, color, 18 minutes.) 1976. Double Harness. (16mm film, color, 15 minutes.) 1976. Roar of Power. (16mm film, color, 15 minutes.) The following are available from the Bureau of Audio Visual Instruction. Agricultural Tractor Safety. 01030 (16mm film, color, 22 minutes). Purdue University, 1976. Chance of a Lifetime. 07577 (16mm film, color, 16 minutes). Ontario Department of Agriculture and Food, 1970. Combine Safety. 01034 (16mm film, color, 11 minutes). International Photographic Center, 1976. Farm Tractor Safety. 01044 (16mm film, color, 11 minutes). International Photographic Center, 1976. For Whom the Siren Sounds. 01991 (16mm film, color, 16 minutes). International Photographic Center, 1977. Forage Harvest Safety. 01035 (16mm film, color, 11 minutes). International Photographic Center, 1975. Wagon Safety; Also Blowers, Mixers and Spreaders. 01042 (16mm film, color, 11 minutes). International Photographic Center, 1976. The following are available from the Gehl Company. Haytools Headquarters. (16mm film, color, 14 minutes.) 1983. Mix-All. (16mm film, color, ten minutes.) 1978. The following are available from the John Deere Company. Fundamentals of Machine Operation Series. (Slides and transparencies.) Fundamentals of Service Series. (Slides and transparencies.) The following is available from the Modern Talking Picture Service. Old Time Farm Equipment. (16mm film, color, seven minutes.)