Graduate Project

 

Yarding system and carriage development: a case study Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_projects/0p096c661

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  • In recent years considerable work has been done in the development of improved logging machinery. The word improvement may bring to mind entirely new or improved systems which offer the logger greater mobility and efficient use of manpower. Logging has generally been labor intensive, however, "The need to achieve greater output to offset ever increasing labor costs prompted continued mechanization of the yarding process." (Hilton Lyson and Roger H. Twito, 1973). Capital investment as well as labor has been a problem to the logging industry. Large and complex machines represent investments which necessitate continued use on high volume logging areas. The future may see size oriented development of logging machinery. By size oriented, I mean machinery developed so that the machine's size is as small as possible to handle the volumes of logs met on the logging units. To achieve the objective of lower costs through small machinery, the emphasis is on efficient use of gearing and cable alignment to achieve mechanical advantage (increase in power without increases in the forces applied) throughout the machinery system. The reason for many improvements in machinery or methods is that an industry or individual is confronted with a problem that is not adequately solved by existing methods or machinery. This principle also holds true for logging improvements. Most of the machinery or even the logging methodology improvements require considerable ability in engineering and a knowledge of the problems confronted. The whole system approach is needed in any machinery development. The system is made up of a number of components with each component relying on or affecting another component's performance. The whole system cannot be any better than the weakest component.
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  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2009-05-05T19:50:21Z (GMT) No. of bitstreams: 1 Sears, James MF.pdf: 433786 bytes, checksum: 8106d458794f27bb22522e4a9ed5c312 (MD5)
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  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2009-05-04T20:40:55Z No. of bitstreams: 1 Sears, James MF.pdf: 433786 bytes, checksum: 8106d458794f27bb22522e4a9ed5c312 (MD5)

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