Proposed design modifications to reduce risk of operating rotary field mowers
| Autor: | Larry R. Piercy, Scott A. Shearer, Larry G. Wells, Katie L. White |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Tractor
Engineering business.product_category Equipment Safety Hydraulics business.industry Hydraulic circuit Public Health Environmental and Occupational Health Mower Poison control Agriculture Equipment Design Automotive engineering law.invention Dynamic braking law Hydraulic brake Accidents Occupational Humans Hydraulic machinery General Agricultural and Biological Sciences Safety Risk Reliability and Quality business |
| Zdroj: | Journal of agricultural safety and health. 6(4) |
| ISSN: | 1074-7583 |
| Popis: | 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 cm 3 rev -1 (0.4 in. 3 rev -1 ) displacement motor with a 0.748 kg blade and 47.5 cm 3 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. |
| Databáze: | OpenAIRE |
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