Agricultural and Biosystems Engineering Publications
Campus Units
Agricultural and Biosystems Engineering
Document Type
Article
Publication Version
Published Version
Publication Date
2017
Journal or Book Title
Journal of Agricultural Safety and Health
Volume
23
Issue
4
First Page
281
Last Page
295
Research Focus Area(s)
Occupational Safety Engineering
DOI
10.13031/jash.12562
Abstract
Power take-off (PTO) is a common method of transferring power from a tractor to a towed piece of machinery. The PTO is also a well-documented cause of severe and often permanent disabling injuries to farm operators. The physical conditions that cause entanglements are not well established. Several studies have explored the parameters of PTO entanglements as materials have been drawn across a rotating PTO knuckle to test for entanglement probability. The objective of this study was to determine probability of entanglement when materials are dropped vertically onto a PTO knuckle spinning at 540 rpm. A total of 360 randomized trials were conducted with ten replications for each of the six positions (center of yoke, edge of yoke rotating downward, edge of yoke rotating upward, center of cross, edge of cross rotating downward, and edge of cross rotating upward) and six different materials (woven cotton athletic shoe lace, cotton workboot lace, leather workboot lace, cotton twine, denim strip, and Tyvek strip). Not a single entanglement was recorded. Dramatic high-speed video imagery authenticated the material’s motion and path as it interacted with the rotating PTO knuckle.
Copyright Owner
American Society of Agricultural and Biological Engineers
Copyright Date
2017
Language
en
File Format
application/pdf
Recommended Citation
Schwab, Charles V. and Rempe, Isaac J., "Likelihood of Entanglement when Materials are Dropped Vertically onto a Rotating PTO Knuckle" (2017). Agricultural and Biosystems Engineering Publications. 935.
https://lib.dr.iastate.edu/abe_eng_pubs/935
Included in
Agriculture Commons, Bioresource and Agricultural Engineering Commons, Ergonomics Commons, Occupational Health and Industrial Hygiene Commons, Operational Research Commons
Comments
This article is published as Schwab, Charles V., and Isaac J. Rempe. "Likelihood of Entanglement when Materials are Dropped Vertically onto a Rotating PTO Knuckle." Journal of Agricultural Safety and Health 23, no. 4 (2017): 281-295. DOI: 10.13031/jash.12562. Posted with permission.