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.

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.

Copyright Owner

American Society of Agricultural and Biological Engineers

Language

en

File Format

application/pdf

Share

COinS