Specifies test procedures and minimum performance criteria for evaluating roll-over protective structures mounted behind the driver’s seat on narrow-track tractors. It applies to driver-controlled tractors, but does not cover earthmoving machinery. It includes procedures for both dynamic and static testing. A theoretical analysis of roll-over protective structures, which would provide at least equivalent performance to physical testing, is included.
Table of contents
Header
About this publication
PREFACE
1 SCOPE AND GENERAL
1.1 SCOPE
1.2 OBJECTIVE
1.3 APPLICATION
1.4 REFERENCED DOCUMENTS
1.5 DEFINITIONS
1.6 EQUIVALENCE
1.7 ALTERNATIVE TO PHYSICAL TESTING
1.8 GENERAL REQUIREMENTS
1.8.1 ROPS previously tested on different tractor models
1.8.2 Measurement tolerances
1.8.3 Tractor mass
1.8.3.1 Basic tractor mass
1.8.3.2 Reference tractor mass
1.8.4 Seat location and seat reference point
1.8.5 Zone of clearance
1.8.6 Repairs to ROPS
1.9 MARKING
2 DYNAMIC TESTING
2.1 SCOPE OF SECTION
2.2 CONDITIONS FOR ACCEPTANCE
2.3 SELECTION AND PREPARATION FOR TEST OF ROPS AND TRACTOR
2.4 APPARATUS AND EQUIPMENT
2.4.1 Measurement of clearance zone
2.4.2 Impact tests
2.4.2.1 Pendulum weight
2.4.2.2 Lashings
2.4.2.3 Wheel prop and beam
2.4.2.4 Measuring apparatus
2.4.3 Crushing tests
2.5 TESTS FOR ESTABLISHING STRENGTH OF CAB OR FRAME AND ATTACHMENT TO TRACTOR
2.5.1 Test procedure
2.5.1.1 Sequence of tests
2.5.1.2 Track width
2.5.1.3 Cab fittings and cladding
2.5.1.4 Direction of impact blows
2.5.1.5 Tyre pressures and deflections
2.5.2 Impact and crushing tests
2.5.2.1 Impact at the rear
2.5.2.2 Impact at the front
2.5.2.3 Impact at the side
2.5.2.4 Crushing at the rear
2.5.2.5 Crushing at the front
2.5.3 Measurements to be made
2.5.3.1 Fractures and cracks
2.5.3.2 Zone of clearance
2.5.3.3 Maximum momentary deflection
2.5.3.4 Permanent deflection
2.6 REPORT AND SPECIFICATION
3 STATIC TESTING
3.1 SCOPE OF SECTION
3.2 CONDITIONS FOR ACCEPTANCE
3.3 SELECTION AND PREPARATION OF ROPS AND TRACTOR
3.4 APPARATUS AND EQUIPMENT
3.4.1 Horizontal loading tests
3.4.1.1 Fixing
3.4.1.2 Loading device
3.4.1.3 Measuring apparatus
3.4.2 Crushing tests
3.5 TESTS FOR ESTABLISHING STRENGTH OF CAB OR FRAME AND ATTACHMENT TO TRACTOR
3.5.1 Test procedure
3.5.2 Horizontal loading from the rear, front and side
3.5.2.1 General provisions for horizontal loading tests
3.5.2.2 Longitudinal loading
3.5.2.3 Loading from the side
3.5.3 Crushing tests
3.5.3.1 Crushing at the rear
3.5.3.2 Crushing at the front
3.5.4 Second longitudinal loading
3.6 REPORT AND SPECIFICATION
APPENDIX A
APPENDIX B
APPENDIX C
Cited references in this standard
Content history
DR 95040
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