AS 1636.3-1996

1 - AS 1636.3-1996 TRACTORS - ROLL-OVER PROTECTIVE STRUCTURES - CRITERIA AND TESTS - MID-MOUNTED FOR NARROW-TRACK TRACTORS
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 OBJECTIVE
6 - 1.3 APPLICATION
6 - 1.4 REFERENCED DOCUMENTS
7 - 1.5 DEFINITIONS
7 - 1.5.1 Competent person
7 - 1.5.2 Tractor
7 - 1.6 EQUIVALENCE
7 - 1.7 ALTERNATIVE TO PHYSICAL TESTING
7 - 1.8 GENERAL REQUIREMENTS
7 - 1.8.1 ROPS previously tested on different tractor models
8 - 1.8.2 Measurement tolerances
8 - 1.8.3 Tractor mass
8 - 1.8.4 Seat location and seat reference point
9 - 1.8.5 Zone of clearance
10 - 1.8.6 Repairs to ROPS
10 - 1.9 STABILITY TESTING
10 - 1.9.1 General
10 - 1.9.2 Lateral stability test
10 - 1.9.3 Non-continuous rolling test
11 - 1.10 MARKING
12 - 1.11 ALTERNATIVE MARKING
18 - SECTION 2 DYNAMIC TESTING
18 - 2.1 SCOPE OF SECTION
18 - 2.2 CONDITIONS FOR ACCEPTANCE
18 - 2.3 SELECTION AND PREPARATION FOR TEST OF ROPS AND TRACTOR
18 - 2.4 APPARATUS AND EQUIPMENT
18 - 2.4.1 Measurement of clearance zone
18 - 2.4.2 Impact tests
19 - 2.4.3 Crushing tests
19 - 2.5 TESTS FOR ESTABLISHING STRENGTH OF CAB OR FRAME AND ATTACHMENT TO TRACTOR
19 - 2.5.1 Test procedure
20 - 2.5.2 Impact and crushing tests
22 - 2.5.3 Measurements to be made
23 - 2.6 REPORT AND SPECIFICATION
29 - SECTION 3 STATIC TESTING
29 - 3.1 SCOPE OF SECTION
29 - 3.2 CONDITIONS FOR ACCEPTANCE
30 - 3.3 SELECTION AND PREPARATION OF ROPS AND TRACTOR
30 - 3.4 APPARATUS AND EQUIPMENT
30 - 3.4.1 Horizontal loading tests
31 - 3.4.2 Crushing tests
36 - 3.5 TESTS FOR ESTABLISHING STRENGTH OF CAB OR FRAME AND ATTACHMENT TO TRACTOR
36 - 3.5.1 Test procedure
36 - 3.5.2 Horizontal loading from the rear, front and side
38 - 3.5.3 Crushing tests
38 - 3.6 REPORT AND SPECIFICATION
39 - APPENDIX A - TYPICAL DATA SHEET FOR A PROTECTIVE STRUCTURE
41 - APPENDIX B - TYPICAL TEST REPORT FOR A PROTECTIVE STRUCTURE (DYNAMIC TESTING)
43 - APPENDIX C - TEST REPORT FOR A PROTECTIVE STRUCTURE (STATIC TESTING)

Specifies test procedures and minimum performance criteria for evaluating roll-over protective structures mounted in front of the driver's seat on narrow-track tractors. It applies to driver-controlled tractors, but does not cover earthmoving equipment. It includes procedures for both dynamic and static testing. A theoretical analysis of roll-over protective structures, which would provide equivalent performance to physical testing, is included.

This Standard specifies procedures for the evaluation of mid-mounted rollover protective structures (ROPS) for the protection of drivers of narrow-track tractors. It also sets out test procedures and minimum performance criteria for those structures.It applies to driver-controlled tractors -(a) having a ground clearance not greater than 600 mm measured beneath the lowest points of the front or rear axles, allowing for the differential; and(b) having fixed or adjustable minimum track widths of -(i) less than 1150 mm for the axle fitted with the widest tyres; and the remaining axle adjustable so that the outer edges of the tyres do not protrude beyond the outer edge of the widest tyres; or(ii) less than 1150 mm for axles where wheels and tyres are all the same size.This Standard applies to driver-controlled tractors and is not intended to apply to earthmoving machinery as defined in AS 2294. It describes two different methods of testing a ROPS: a dynamic test, which may be applied to tractors having a mass of not less than 800 kg and not greater than 3000 kg; and a static test, which may be applied to tractors having a mass of not less than 560 kg and not greater than 3000 kg.NOTE: A ROPS is a structure whose primary purpose is to reduce the possibility of an operator from being crushed or otherwise injured in the event of a tractor rolling over. Wearing a seat belt in conjunction with using a ROPS, may provide additional protection in the event of a tractor turning over. Seat belts should comply with AS/NZS 2596 or SAE J386.

First published as AS 1636.3-1996.