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Development and Evaluation of a Computer-Based ROPS Design Program.

Paul D Ayers1, Farzaneh Khorsandi1, Yohan John1

  • 1University of Tennessee.

Journal of Agricultural Safety and Health
|November 16, 2017
PubMed
Summary
This summary is machine-generated.

A new computer program simplifies designing rollover protective structures (ROPS) for tractors, crucial safety devices. Tested ROPS designs met safety standards, reducing agricultural fatalities from tractor overturns.

Keywords:
ROPSSafetyStandardsTractor

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Area of Science:

  • Agricultural Safety Engineering
  • Mechanical Design
  • Occupational Health

Background:

  • Tractor overturns are the primary cause of farm fatalities in the U.S.
  • Rollover protective structures (ROPS) and seatbelts can prevent most tractor-related deaths.
  • Many tractors designed for ROPS lack these safety structures.

Purpose of the Study:

  • To develop and test a computer-based ROPS design program (CRDP) for creating simple, two-post, rear axle-mounted ROPS.
  • To design ROPS based on SAE Standard J2194 using tractor dimensions and mass.
  • To demonstrate the feasibility of quick ROPS designs and installations.

Main Methods:

  • Developed a computer-based ROPS design program (CRDP) using Excel for input, calculation, and drawing.
  • Designed three ROPS for specific tractor models (Massey Ferguson 265, Long 460, Allis Chalmers 5040).
  • Conducted static rear, side, and vertical tests according to SAE J2194 on two ROPS; assessed ease of installation for a third.

Main Results:

  • All tested ROPS met or exceeded safety deflection requirements (ROPS performance deflection < ROPS allowable deflection).
  • The CRDP successfully generated designs for the selected tractor models.
  • One ROPS was mounted in under an hour, showcasing the ease of the bolted corner bracket design.

Conclusions:

  • The computer-based ROPS design program (CRDP) provides a quick and simple method for designing essential tractor safety structures.
  • The developed ROPS designs passed static performance tests, indicating their effectiveness.
  • While CRDP aids design, it does not replace mandatory performance testing required by OSHA and SAE standards.