ANSI ISO 12003-1-2017 Agricultural and forestry tractors - Roll-over protective structures on narrow-track wheeled tractors - Part 1 Front-mounted ROPS.pdf

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1、 ASABE/ISO 12003-1:2008 SEP2017 Agricultural and forestry tractors Roll-over protective structures on narrow-track wheeled tractors Part 1: Front-mounted ROPS American Society of Agricultural and Biological Engineers ASABE is a professional and technical organization, of members worldwide, who are d

2、edicated to advancement of engineering applicable to agricultural, food, and biological systems. ASABE Standards are consensus documents developed and adopted by the American Society of Agricultural and Biological Engineers to meet standardization needs within the scope of the Society; principally a

3、gricultural field equipment, farmstead equipment, structures, soil and water resource management, turf and landscape equipment, forest engineering, food and process engineering, electric power applications, plant and animal environment, and waste management. NOTE: ASABE Standards, Engineering Practi

4、ces, and Data are informational and advisory only. Their use by anyone engaged in industry or trade is entirely voluntary. The ASABE assumes no responsibility for results attributable to the application of ASABE Standards, Engineering Practices, and Data. Conformity does not ensure compliance with a

5、pplicable ordinances, laws and regulations. Prospective users are responsible for protecting themselves against liability for infringement of patents. ASABE Standards, Engineering Practices, and Data initially approved prior to the society name change in July of 2005 are designated as “ASAE“, regard

6、less of the revision approval date. Newly developed Standards, Engineering Practices and Data approved after July of 2005 are designated as “ASABE“. Standards designated as “ANSI“ are American National Standards as are all ISO adoptions published by ASABE. Adoption as an American National Standard r

7、equires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by ASABE. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected inte

8、rests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. CAUTION NOTICE: ASABE and ANSI standards may be revised or withdrawn at any

9、 time. Additionally, procedures of ASABE require that action be taken periodically to reaffirm, revise, or withdraw each standard. Copyright American Society of Agricultural and Biological Engineers. All rights reserved. ASABE, 2950 Niles Road, St. Joseph, Ml 49085-9659, USA, phone 269-429-0300, fax

10、 269-429-3852, hqasabe.org S T A N D A R D ASABE/ISO 12003-1:2008 SEP2017 Copyright American Society of Agricultural and Biological Engineers 1 ASABE/ISO 12003-1:2008 SEP2017 Approved September 2017 as an American National Standard Agricultural and forestry tractors Roll-over protective structures o

11、n narrow-track wheeled tractors Part 1: Front-mounted ROPS These materials are subject to copyright claims of ISO and ASABE. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permission of ASABE. All requests pertaining to

12、ASABE/ISO 12003-1:2008 SEP2017 standard should be submitted to ASABE. This standard was reviewed and approved for adoption by the ASABE Machinery System Agricultural Machinery Common Tests subcommittee. Approved as an ASABE standard and approved by ANSI September 2017. Keywords: Roll-over, ROPS, Saf

13、ety, Test procedure, Tractor 0 Foreword 0.1 ASABE/ISO 12003-1:2008 monyear, Agricultural and forestry tractors Roll-over protective structures on narrow-track wheeled tractors Part 1: Front-mounted ROPS, is an adoption without modification of the identically titled ISO standard ISO 12003-1:2008, Agr

14、icultural and forestry tractors Roll-over protective structures on narrow-track wheeled tractors Part 1: Front-mounted ROPS. 0.2 ASABE/ISO 12003-1:2008 monyear specifies procedures for both the static and dynamic testing of roll-over protective structures (ROPS) front-mounted on narrow-track wheeled

15、 agricultural and forestry tractors. It defines the clearance zone and acceptance conditions for rigid or tiltable, front, two-post ROPS, including any associated rear fixtures, and is applicable to tractors so equipped having the following characteristics. A ground clearance of not more than 600 mm

16、 beneath the lowest points of the front- and rear-axle housings (not considering lower points on the axle differential). A fixed or adjustable minimum track width of one of the two axles of less than 1 150 mm when fitted with the widest specified tyres. It is understood that the axle mounted with th

17、e wider tyres is set at a track width of not more than 1 150 mm. It shall be possible to set the track width of the other axle in such a way that the outer edges of the narrower tyres do not extend beyond the outer edges of the tyres of the other axle. Where the two axles are fitted with rims and ty

18、res of the same size, the fixed or adjustable track width of the two axles shall be less than 1 150 mm. A mass greater than 600 kg but less than 3 000 kg, unladen, including the ROPS and tyres of the largest size recommended by the manufacturer. 0.3 Eight normative references are listed in ISO 12003

19、-1:2008. These references have been reviewed and accepted as part of the adoption of the ISO document in ASABE adoption number. 0.4 This standard has been approved as an American National standard by ANSI (American National Standard Institute). 0.5 Product labelled to reference ISO 12003-1 shall be

20、deemed compliant to ASABE/ISO 12003-1. Text of ISO 12003-1:2008, Agricultural and forestry tractors Roll-over protective structures on narrow-track wheeled tractors Part 1: Front-mounted ROPS, follows. ASABE/ISO 12003-1:2008 SEP2017 Copyright American Society of Agricultural and Biological Engineers

21、 2 1 Scope This part of ISO 12003 specifies procedures for both the static and dynamic testing of roll-over protective structures (ROPS) front-mounted on narrow-track wheeled agricultural and forestry tractors. It defines the clearance zone and acceptance conditions for rigid or tiltable, front, two

22、-post ROPS, including any associated rear fixtures, and is applicable to tractors so equipped having the following characteristics. A ground clearance of not more than 600 mm beneath the lowest points of the front- and rear-axle housings (not considering lower points on the axle differential). A fix

23、ed or adjustable minimum track width of one of the two axles of less than 1 150 mm when fitted with the widest specified tyres. It is understood that the axle mounted with the wider tyres is set at a track width of not more than 1 150 mm. It shall be possible to set the track width of the other axle

24、 in such a way that the outer edges of the narrower tyres do not extend beyond the outer edges of the tyres of the other axle. Where the two axles are fitted with rims and tyres of the same size, the fixed or adjustable track width of the two axles shall be less than 1 150 mm. A mass greater than 60

25、0 kg but less than 3 000 kg, unladen, including the ROPS and tyres of the largest size recommended by the manufacturer. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated

26、references, the latest edition of the referenced document (including any amendments) applies. ISO 630, Structural steels Plates, wide flats, bars, sections and profiles ISO 898-1:1999, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs ISO 898-2:1

27、992, Mechanical properties of fasteners Part 2: Nuts with specified proof load values Coarse thread ISO 2408, Steel wire ropes for general purposes Minimum requirements ISO 5353, Earth-moving machinery, and tractors and machinery for agriculture and forestry Seat index point ASTM A370, Standard Test

28、 Methods and Definitions for Mechanical Testing of Steel Products ASAE1S313.3, Soil Cone Penetrometer ASAE1EP542, Procedures for Using and Reporting Data Obtained with the Soil Cone Penetrometer 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1

29、 roll-over protective structure ROPS 1American Society of Agricultural Engineers. ASABE/ISO 12003-1:2008 SEP2017 Copyright American Society of Agricultural and Biological Engineers 3 framework protecting drivers of wheeled agricultural and forestry tractors, which minimizes the likelihood of driver

30、injury resulting from accidental overturning during normal field work NOTE: The ROPS is characterized by the provision of space for a clearance zone, either inside the envelope of the structure or within a space bounded by a series of straight lines from the outer edges of the structure to any part

31、of the tractor that might come into contact with the ground; it is capable of supporting the tractor in an overturned position. 3.2 front-mounted ROPS two-post roll-over protective structure mounted on the tractor in front of the driver and with a reduced clearance zone NOTE: Compare with rear-mount

32、ed ROPS described in ISO 12003-2. 3.3 rear fixture component such as the rear tyre (measured at its specified smallest diameter), mudguard or other rigid tractor components, or all of these, or a supplementary fixture of requisite width, height and strength installed behind the drivers seat, which c

33、ompletes the front-mounted ROPS clearance zone for strength testing 3.4 tractor mass mass of the unladen tractor in working order with tanks and radiator full, front-mounted ROPS and any equipment required for normal use NOTE: The operator, optional ballast weights, additional wheel equipment, and s

34、pecial equipment and tools are not included. 3.5 reference mass mass, not less than the tractor mass, selected by the manufacturer for calculation of loading energies and forces to be applied in the tests 3.6 longitudinal median plane longitudinal plane of symmetry zero Y plane vertical plane Y pass

35、ing through the mid-points of AB, perpendicular to AB, where, for each wheel, the vertical plane passing through its axis cuts the mid-plane of the wheel following a straight line which meets the supporting surface of the vehicle at one point, and where A and B are two points thus defined which corr

36、espond to two wheels, both of which are either steering or powered wheels, situated respectively at the two ends of the same real or imaginary axle See Figure 1. NOTE 1: “Mid-plane of the wheel” designates the plane equidistant from the inner edges of the rim. In the case of dual wheels, the straigh

37、t line is, in this particular case, the intersection of the mid-plane of the dual wheels and the vertical plane passing through the axis of the axle pin. NOTE 2: Adapted from ISO 612:19781, Clause 5. 3.7 reference plane vertical plane, generally longitudinal to the tractor and passing through the se

38、at index point and the steering-wheel centre NOTE: Normally this reference plane coincides with the longitudinal median plane of the tractor. ASABE/ISO 12003-1:2008 SEP2017 Copyright American Society of Agricultural and Biological Engineers 4 Figure 1 Longitudinal median plane 3.8 wheelbase horizont

39、al distance between the two vertical planes passing through the rotational centre-lines of the wheels, where one plane is for the front wheels and the other for the rear wheels 4 Symbols See Table 1. Table 1 Symbols Symbol Description Unit Ratio of permanent deflection to elastic deflection measured

40、 at the point of impact during the dynamic tests mm/mm h Half of the horizontal seat adjustment mm v Half of the vertical seat adjustment mm B Minimum overall width of the tractor mm Bb Maximum outer width of the front-mounted ROPS mm D Deflection of the front-mounted ROPS at the point of, and in li

41、ne with, the load application (static test) mm D Deflection of calculated energy required mm Ei Strain energy absorbed; area under F-D curve J Eil Energy to be absorbed during longitudinal loading J Eis Energy to be absorbed during side loading J F Static load force N Fi Force applied to the rear fi

42、xture N F Loading force for the calculated energy required N Fmax Maximum static load force occurring during loading, with the exception of overload N Fv Vertical crushing force N H Falling height of the pendulum block mm Ir Moment of inertia about rear axle, whatever the mass of the rear wheels may

43、 be kgm2 L Tractor reference wheelbase mm m Tractor mass (see 3.4) kg mt Reference mass (see 3.5) kg NOTE: See Annex C for characteristic tractor data symbols used in the calculation of non-continuous rolling. ASABE/ISO 12003-1:2008 SEP2017 Copyright American Society of Agricultural and Biological E

44、ngineers 5 5 Preliminary tests CAUTION Some of the tests specified in this part of ISO 12003 involve the use of processes which could lead to a hazardous situation. 5.1 General requirements 5.1.1 Front-mounted ROPS may only be applied to tractors that satisfactorily complete both the lateral stabili

45、ty test and the non-continuous rolling test described in this clause. 5.1.2 The tractor shall be equipped with the front-mounted ROPS fitted in its upright (safety) position. 5.1.3 The tractor shall be equipped with tyres having the greatest diameter indicated by the manufacturer and the smallest cr

46、oss-section for tyres of that diameter. The tyres shall not be liquid-ballasted and shall be inflated to the pressure recommended for field work. 5.1.4 The rear wheels shall be set to the narrowest track width; the front wheels shall be set as closely as possible to the same track width. If it is po

47、ssible to have two front track settings which differ equally from the narrowest rear track setting, the wider of these two front track settings shall be selected. 5.1.5 All the tractors tanks shall be filled or the liquids shall be replaced by an equivalent mass in the corresponding position. 5.1.6

48、All attachments used in the series production shall be fixed to the tractor in the normal position. 5.2 Lateral stability test 5.2.1 The tractor, prepared as specified above, shall be placed on a horizontal plane so that the tractor front-axle pivot point or, in the case of an articulated tractor, t

49、he horizontal pivot point between the two axles can move freely. 5.2.2 Using a jack or a hoist, tilt the part of the tractor which is rigidly connected to the axle that bears more than 50% of the tractors weight, while constantly measuring the angle of inclination. This angle shall be at least 38 at the moment when the tractor is resting in a state of unstable equilibrium with the wheels touching the ground. Perform the test once with the steering wheel turned to full right lock an