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ROPS - Stability

Taylor Floyd Scott Gangel Sebastian Redcay Ben Zoghby. ROPS - Stability. ROPS – “Rollover Protective Structures” OSHA Standard 1928.51 Required for all tractors over 20hp engine power unless excluded by standard

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ROPS - Stability

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  1. Taylor Floyd Scott Gangel Sebastian Redcay Ben Zoghby ROPS - Stability

  2. ROPS – “Rollover Protective Structures” OSHA Standard 1928.51 Required for all tractors over 20hp engine power unless excluded by standard ROPS are tested for impact from the side and rear to ensure they meet proper specifications In 2011 studies showed that only 59% of tractors in use had ROPS equipped Intro

  3. Stability [stah-bil´ĭ-te]: the quality of maintaining a constant character despite forces that threaten to disturb it. • 3 Main Points of Stability: • Center of Gravity (CG) • Rear Axle Torque (RAT) • Centrifugal Force What Is Stability?

  4. Point that all weight of tractor could potentially balance on • Additional Implements can shift the CG in any direction Center of Gravity

  5. Rear Axle Torque • Causes: • Wheels locked in place • Tires stuck in a ditch • Tires frozen to ground 75o

  6. Centrifugal Force • Increases proportionally with turning angle • Increases in proportion to the square of the speed

  7. Typically about 10” above and 2’ in front of the rear axle • For a tractor to stay upright • its center of gravity must stay within the tractor’s stability baseline Center of Gravity

  8. Change in the center of gravity • High loads • front-end loader is raised • Attached chemical tanks • Driving on a steep slope • Making a fast sharp turn • Hitting a bump at a high speed • Improper loading of the tractor Causes of an unstable tractor

  9. Consequences of Rollovers

  10. Leading Cause of fatalities in farm related accidents • 80% of these rollover fatalities happen to experienced farmers • 7 of 10 farms will go out of business within a year following a tractor-related fatality • 1 out of 7 farmers involved in tractor overturns will be permanently disabled Consequences of Rollovers

  11. Smart Operation • Use the tractor for its designed use • Take advantage of ROPS and seatbelt • Watch height of loads being carried (Forklift, front-end loader, etc.) • Be aware of surroundings (steep slopes, banks, etc.) • Use drawbar correctly Solutions to Tractor Roll Over

  12. Take advantage of ROPS and seatbelt • The use of ROPS and a seat belt is estimated to be 99% effective in preventing death or serious injury in the event of a tractor rollover. Smart Operation The overturned tractor on the right has ROPS and FOPS which protected the operator during rollover

  13. Be aware when carrying loads with equipment • Carrying a load with a front-end loader or forklift above the tractor raises its center of gravity, making the tractor more prone to rollover. • Drive in reverse up steep hills to minimize chance of tipping. Smart Operation

  14. Only use tractors with approved ROPS • Homemade ROPS are not tested or specifically engineered to withstand tractor rollover Smart Operation

  15. Wheel weights and/or counterweights can be used to adjust the stability of a tractor for different applications Use Counterweights and/or wheel weights

  16. Some tractors allow for adjusting wheel width • This can add stability to a tractor, especially when using implements that extend out past the side of the tractor Adjustable Wheel Width

  17. http://www.ncbi.nlm.nih.gov/pubmed/10793282 http://www.public-health.uiowa.edu/face/alerts/0811Alert.pdf http://www.lsuagcenter.com/en/our_offices/departments/biological_ag_engineering/features/extension/agriculture_and_environment/ag_safety/tractor+rollover+accidents+causes+and+prevention.htm https://www.osha.gov/dsg/topics/agriculturaloperations/vehiclehazards.html Sources

  18. http://www.cals.uidaho.edu/agsafety/frmsaf02.pdf http://extension.psu.edu/business/ag-safety/vehicles-and-machinery/tractor-safety/e34 http://www.ccohs.ca/oshanswers/safety_haz/tractors/stability.html http://www.sdstate.edu/abe/extension/hosta/task-sheets/upload/4-12-Tractor-Stability.pdf sources

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