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Proposed design modifications to reduce risk of operating rotary field mowers.

Authors
White-KL; Wells-LG; Shearer-SA; Piercy-LR
Source
J Agric Saf Health 2000 Nov; 6(4):249-259
NIOSHTIC No.
20034570
Abstract
The primary objective of this project was to reduce risk of injury associated with operating a rotary mower driven by a tractor power take-off (PTO) by developing and evaluating design improvements and determining their economic feasibility. Researchers have concluded that alteration of machinery design has a greater impact on the reduction of accidents than safety training. Implementation of an Operator Presence Sensing System (OPSS) and removal of the PTO are the two injury-reducing, engineering modifications evaluated by this research. Hydraulic power allows this to occur by providing dynamic braking, few moving parts (removal of the PTO), and controllable power. A hydraulic circuit was developed to power the mower and to enable an OPSS. Tractor hydraulics were simulated using a hydraulic training bench. Two mower configurations were tested: 6.55 cm3 rev(-1) (0.4 in.3 rev(-1)) displacement motor with a 0.748 kg blade and 47.5 cm3 rev(-1) (2.9 in.3 rev(-1)) displacement motor with a 9.4 kg blade. A PTO-driven rotary mower was not used to test the circuit due to spatial and safety limitations of the hydraulic training bench. Results from the first mower configuration verified the concepts behind the hydraulic circuit. The second configuration verified the OPSS and indicated the applicability of the circuit to a rotary mower.
Keywords
Agricultural-industry; Agricultural-processes; Agricultural-workers; Agriculture; Agricultural-machinery; Farmers; Motor-vehicles; Safety-climate; Safety-education; Safety-measures; Safety-monitoring; Safety-personnel; Safety-practices; Safety-programs; Education; Environmental-engineering; Environmental-exposure; Environmental-factors; Environmental-hazards; Environmental-health; Environmental-protection; Environmental-stress; Environmental-technology; Author Keywords: Agricultural safety; Rotary mowers; Mower safety; Deadman controls
Contact
K. L. White, Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, KY 40546-0276
CODEN
JASHFD
Publication Date
20001101
Document Type
Journal Article
Email Address
lwells@bae.uky.edu
Funding Type
Agriculture; Cooperative Agreement
Fiscal Year
2001
NTIS Accession No.
NTIS Price
Identifying No.
Cooperative-Agreement-Number-U50-OH-007547
Issue of Publication
4
ISSN
1074-7583
Source Name
Journal of Agricultural Safety and Health
State
KY
Performing Organization
University of Kentucky
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