1979L0622 — EN — 04.01.1983 — 001.001 — 1
This document is meant purely as a documentation tool and the institutions do not assume any liability for its contents
►B COUNCIL DIRECTIVE
of 25June 1979
on the approximation of the laws of the Member States relating to the roll-over protection
structures of wheeled agricultural or forestry tractors (static testing)
(79/622/EEC)
(OJ L 179, 17.7.1979, p. 1)
Amended by:
Official Journal
No page date
►M1Commission Directive 82/953/EEC of 15 December 1982 L 386 31 31.12.1982
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COUNCIL DIRECTIVE
of 25June 1979
on the approximation of the laws of the Member States relating to
the roll-over protection structures of wheeled agricultural or
forestry tractors (static testing)
(79/622/EEC)
THE COUNCIL OF THE EUROPEAN COMMUNITIES,
Having regard to the Treaty establishing the European Economic
Community, and in particular Article 100 thereof,
Having regard to the proposal from the Commission,Having regard to the opinion of the European Parliament (
1),
Having regard to the opinion of the Economic and Social Committee (2),
Whereas the technical requirements with which tractors must comply
pursuant to national laws relate inter alia to roll-over protection struc-
tures and to their attachment to the tractor;
Whereas those requirements differ from one Member State to another;
whereas it is therefore necessary that all Member States adopt the samerequirements either in addition to or in place of their existing rules inorder, in particular, to allow the EEC type-approval procedure whichwas the subject of Council Directive 74/150/EEC of 4 March 1974 onthe approximation of the laws of the Member States relating to thetype-approval of wheeled agricultural or forestry tractors (
3) to be intro-
duced in respect of each type of tractor;
Whereas a harmonized component type-approval procedure for roll-over
protection structures and their attachment to the tractor makes itpossible foreach MemberState to check compliance with the commonconstruction and testing requirements and to inform the other MemberStates of its findings by sending them copies of the component type-approval certificate completed for each type of roll-over protectionstructure and its attachment to the tractor; whereas the placing of anEEC component type-approval mark on all structures manufactured inconformity with the approved type obviates any need for technicalchecks on those structures in the other Member States;
Whereas common requirements concerning other elements and charac-
teristics of the roll-over protection structure, in particular thoseconcerning the dimensions, doors, safety glass, devices to preventcontinuous rolling if the tractor overturns, and protection of passengers,will be laid down at a laterdate;
Whereas the harmonized requirements are intended principally to ensure
safety on the road and at work throughout the Community; whereas forthis reason it is necessary to introduce the obligation for tractorscovered by this Directive to be fitted with roll-over protection struc-tures; whereas until a date to be determined, the tractors referred to inCouncil Directive 77/536/EEC of 28 June 1977 on the approximation ofthe laws of the Member States relating to the roll-over protectionstructures of wheeled agricultural or forestry tractors (
4) should be able
to be fitted with roll-over protection structures complying either withDirective 77/536/EEC or with this Directive;
Whereas the approximation of the national laws relating to tractors
entails reciprocal recognition by Member States of the checks carriedout by each of them on the basis of the common requirements,
(1) OJ No C 296, 11. 12. 1978, p. 69.
(2) OJ No C 128, 21. 5. 1979, p. 18.
(3) OJ No L 84, 28. 3. 1974, p. 10.
(4) OJ No L 220, 29. 8. 1977, p. 1.
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HAS ADOPTED THIS DIRECTIVE:
Article 1
1. Each Member State shall grant EEC component type-approval for
any type of roll-over protection structure and its tractor attachmentwhich satisfies the construction and testing requirements laid down inAnnexes I to V.
2. A Member State which has granted EEC component type-approval
shall take the measures required to verify, in so far as is necessary andif need be in cooperation with the competent authorities in the otherMember States, that production models conform to the approved type.Such verification shall be limited to spot checks.
Article 2
Member States shall, for each type of roll-over protection structure and
its tractor attachment which they approve pursuant to Article 1, issue tothe manufacturer of the tractor or of the roll-over protection structure, orto his authorized representative, an EEC component type-approval markconforming to the model shown in Annex VI.
Member States shall take all appropriate measures to prevent the use of
marks liable to create confusion between roll-over protection structureswhich have been component type-approved pursuant to Article 1 andotherdevices.
Article 3
1. No Member State may prohibit the placing on the market of
roll-over protection structures or their tractor attachments on groundsrelating to their construction if they bear the EEC component type-approval mark.
2. Nevertheless, a Member State may prohibit the placing on the
market of roll-over protection structures bearing the EEC componenttype-approval mark which consistently fail to conform to the approvedtype.
That State shall forthwith inform the other Member States and the
Commission of the measures taken, specifying the reasons for itsdecision.
Article 4
The competent authorities of each Member State shall within one month
send to the competent authorities of the other Member States copies ofthe component type-approval certificates, an example of which is givenin Annex VII, completed for each type of roll-over protection structurewhich they approve or refuse to approve.
Article 5
1. If the MemberState which has gr anted EEC component type-
approval finds that a number of roll-over protection structures and theirtractor attachments bearing the same EEC component type-approvalmark do not conform to the type which it has approved, it shall take thenecessary measures to ensure that production models conform to theapproved type. The competent authorities of that State shall advise thoseof the otherMemberStates of the measur es taken which may, ifnecessary, where there is serious and repeated failure to conform,extend to withdrawal of EEC component type-approval. The saidauthorities shall take the same measures if they are informed by thecompetent authorities of another Member State of such failure toconform.
2. The competent authorities of the Member States shall within one
month inform each other of any withdrawal of EEC component type-approval and of the reasons for any such measure.
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Article 6
Any decision taken pursuant to the provisions adopted in implementa-
tion of this Directive to refuse or withdraw component type-approvalfor roll-over protection structures and their tractor attachments, or topr ohibit theirplacing on the mar ket ortheiruse, shall set out in detailthe reasons on which it is based. Such decision shall be notified to theparty concerned, who shall at the same time be informed of theremedies available to him under the laws in force in the Member Statesand of the time limits allowed for the exercise of such remedies.
Article 7
No Member State may refuse to grant EEC type-approval or national
type-approval in respect of a tractor on grounds relating to the roll-overprotection structure or its tractor attachment if these bear the EECcomponent type-approval mark and if the requirements laid down inAnnex VIII have been satisfied.
Article 8
No Member State may refuse or prohibit the sale, registration, entry into
service or use of any tractor on grounds relating to the roll-over protec-tion structure and its tractor attachment if these bear the EEC compo-nent type-approval mark and if the requirements laid down in AnnexVIII have been met.
Article 9
This Directive shall apply to tractors as defined in Article 1 of Directive
74/150/EEC having the following characteristics:
— clearance beneath the rear axle of not more than 1 000mm,
— fixed or minimum adjustable track width of one of the driving axles
of 1 150 mm ormor e,
— possibility of being fitted with a multipoint coupling device for
detachable tools and a draw bar,
— mass of 800 kg or more, corresponding to the unladen weight of the
tractor as defined in section 2.4 of Annex I to Directive 74/150/EEC, including the roll-over protection structure fitted incompliance with this Directive and tyres of the largest size recom-mended by the manufacturer.
Article 10
For the purposes of EEC type-approval, any tractor to which Article 9
refers must be fitted with a roll-over protection structure which satisfiesthe requirements laid down in Annexes I to IV.
However, the tractors defined in Article 9 of Directive 77/536/EEC
may, for the purposes of EEC type-approval, be fitted with a roll-overprotection structure which satisfies the requirements laid down inAnnexes I to IV to that Directive.
Article 11
Any amendments necessary to adapt the requirements of the Annexes to
this Directive to take account of technical progress shall be adopted inaccordance with the procedure laid down in Article 13 of Directive74/150/EEC.
Article 12
1. Member States shall bring into force the provisions necessary in
order to comply with this Directive within 18 months of its notificationand shall forthwith inform the Commission thereof.
2. Member States shall ensure that the texts of the main provisions of
national law which they adopt in the field covered by this Directive arecommunicated to the Commission.
Article 13
This Directive is addressed to the Member States.
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LIST OF ANNEXES
Annex I: Conditions forEEC component type-appr oval
Annex II: Conditions for testing the strength of the protection structures and of their
attachment to tractors
Annex III: Test proceduresAnnex IV: FiguresAnnex V: Test report modelAnnex VI: MarksAnnex VII: Model of EEC component type-approval certificateAnnex VIII: Conditions forEEC type-appr ovalAnnex IX: Annex to the EEC type-approval certificate for a tractor with regard to the
strength of the protection structures and of their attachment to the tractor (statictests).
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ANNEX I
CONDITIONS FOR EEC COMPONENT TYPE-APPROVAL
1. DEFINITION
1.1. ‘Roll-over protection structure' (safety cab or frame), hereinafter called
‘protection structure', means the structure on a tractor the essentialpurpose of which is to avoid or limit risks to the driver resulting fromroll-over of the tractor during normal use.
1.2. The structures mentioned in 1.1 are characterized by the fact that during
the tests prescribed in Annexes II and III they ensure an unobstructedspace inside them large enough to protect the driver.
2. GENERAL REQUIREMENTS
2.1. Every protection structure and its attachment to a tractor must be so
designed and constructed as to fulfil the essential purpose laid down insection 1.
2.2. This condition is considered to be fulfilled if the requirements of Annexes
II and III are complied with.
3. APPLICATION FOR EEC COMPONENT TYPE-APPROVAL
3.1. The application for EEC component type-approval with regard to the
strength of a protection structure and the strength of its attachment to atractor shall be submitted by the tractor manufacturer or by the manufac-turer of the protection structure or by his authorized representatives.
3.2. The application forEEC component type-appr oval shall be accompanied
by the undermentioned documents in triplicate and by the followingparticulars:
— general arrangement drawing either to a scale marked on the drawing
or giving the main dimensions of the protection structure. Thisdrawing must in particular show details of the mounting components,
— photographs from side and rear showing mounting details,— brief description of the protection structure including type of construc-
tion, details of mounting on the tractor and, where necessary, detailsof cladding, means of access and escape, details of interior paddingand features to prevent continuous rolling and details of heating andventilation,
— details of materials used in structural parts including attaching
brackets and fixing bolts (see Annex V).
3.3. A tractor representative of the tractor type for which the protection struc-
ture to be approved is intended shall be submitted to the technical serviceresponsible for conducting the component type-approval tests. This tractorshall be fitted with the protection structure.
3.4. The holder of EEC component type-approval may request its extension to
other tractor types. The competent authority which has granted the orig-inal EEC component type-approval shall grant the extension if theapproved protection structure and the type(s) of tractor for which theextension is requested comply with the following conditions:
— the mass of the unballasted tractor, as defined in section 1.3 of Annex
II, does not exceed by more tha n 5 % the reference mass used in the
test,
— the method of attachment and the tractor’s components to which the
attachments are made are identical,
— any components such as mudguards and bonnet cowls which may
provide support for the protection structure are identical,
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— the position and critical dimensions of the seat in the protection
structure and the relative positions of the protection structure and thetractor shall be such that the zone of clearance would have remainedwithin the protection of the deflected structure throughout all tests.
4. MARKINGS
4.1. Every protection structure conforming to the approved type shall bear the
following markings:
4.1.1. the trade mark or name;4.1.2. a component type-approval mark conforming to the model in Annex VI;4.1.3. serial number of the protection structure;4.1.4. Make and type(s) of tractor(s) for which the protection structure is
intended.
4.2. All these particulars must appear on a small plate.4.3. These markings must be visible, legible and indelible.
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ANNEX II
CONDITIONS FOR TESTING THE STRENGTH OF THE PROTECTION
STRUCTURES AND OF THEIR ATTACHMENT TO TRACTORS
1. GENERAL REQUIREMENTS1.1. Test purposes
Tests made using special rigs are intended to simulate such loads as
are imposed on a protection structure, when the tractor overturns.These tests, described in Annex III, enable observations to be madeon the strength of the protection structure and any bracketsattaching it to the tractor and any parts of the tractor which transmitthe test force.
1.2. Preparation for test
1.2.1. The protection structure must conform to the series production
specifications. It shall be attached in accordance with the manufac-turer’s declared method of attachment to one of the tractors forwhich it is designed. A complete tractor is not required for the test;however, the protection structure and parts of the tractor on which itis attached for the tests shall represent an operating installation,hereinafter referred to as ‘the assembly'.
1.2.2. The assembly shall be secured to the bedplate so that the members
connecting the assembly and the bedplate do not deflect signifi-cantly in relation to the protection structure under loading. Themethod of attachment of the assembly to the bedplate must not ofitself modify the strength of the assembly.
1.2.3. The assembly must be supported and secured or modified so that all
the test energy is absorbed by the protection structure and itsattachment to the rigid components of the tractor.
1.2.3.1. To comply with the requirements of 1.2.3, the modification shall
lock any tractor ride suspension system so as to ensure that it doesnot absorb any of the test energy.
1.2.4. For the tests the tractor must be fitted with all structural compo-
nents of the series production which may influence the strength ofthe protection structure or which may be necessary for the strengthtest.
Components which may create a hazard in the zone of clearance
must also be fitted so that they may be examined to see whethertherequirements of section 4 have been fulfilled.
1.3. Tractor mass
The reference mass m
t, used in the formulae (see Annex III) to
calculate the energies and the crushing force, shall be at least thatdefined in section 2.4 of Annex I to Council Directive 74/150/EEC(i.e. excluding optional accessories but including coolant, oils, fuel,tools and driver) plus the protection structure and less 75 kg.
Not included are optional front or rear weights, tyre ballast,
mounted implements, mounted equipment orany specializedcomponents.
2. APPARATUS AND EQUIPMENT2.1. Horizontal loading tests (side and longitudinal)
2.1.1. Material, equipment and tie-down means adequate to ensure that the
assembly is firmly fixed to the bedplate, independently of tyres ifpresent.
2.1.2.
Means of applying a horizontal force on the protection structure by
a stiff beam as shown in Figures 1 and 2 of Annex IV.
2.1.2.1. The stiff beam shall have a vertical face dimension of 150 mm.2.1.2.2. Provision must be made so that the load can be uniformly distrib-
uted normal to the direction of loading and along a beam having a
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length of one of the exact multiples of 50 between 250 and 700
mm.
2.1.2.3. The edges of the beam in contact with the protection structure shall
be curved with a maximum radius of 50 mm.
2.1.2.4. Universal joints — or the equivalent — shall be incorporated to
ensure that the loading device does not constrain the structure inrotation or translation in any direction other than the direction ofloading.
2.1.2.5. Where the horizontal length of the protection structure to which the
load is to be applied does not constitute a straight line normal to thedirection of application of the load, the space shall be packed so asto distribute the load over this length.
2.1.3. Equipment formeasur ing as faras is technically possible the ener gy
absorbed by the protection structure and the rigid parts of thetractor to which it is attached, for example by measuring the forceapplied along its direction of application and the correspondingdeflection relative to a point on the tractor chassis.
2.1.4. Means for proving that the zone of clearance has not been entered
during the test. A rig according to figures 6a, 6b and 6c of AnnexIV can be used.
2.2. Crushing tests (rear and front)
2.2.1. Material, equipment and tie-down means adequate to ensure that the
tractor is firmly fixed to the bedplate, independently of tyres.
2.2.2. Means for applying a vertical force on the protection structure, such
as shown in figure 3 of Annex IV, including a stiff crushing beamwith a width of 250 mm.
2.2.3. Equipment for measuring the total vertical force applied.2.2.4. Means for proving that the zone of clearance has not been entered
during the test. A rig according to figures 6a, 6b and 6c of AnnexIV can be used.
2.3. Measurement tolerances
2.3.1. Dimensions :±3m m .
2.3.2. Deflection :±3m m .
2.3.3. Tractor mass: ± 20 kg.2.3.4. Loads and forces :±2% .
2.3.5. Direction of loading: deviation from horizontal and vertical direc-
tions specified in Annex III:
— at start of test, under zero load: ± 2 °,
— during test, under load: 10 °above and 20 °below the horizontal.
These variations should be kept to a minimum.
3. TESTS3.1. General requirements
3.1.1. Sequence of tests
3.1.1.1. The sequence of tests shall be as follows:
3.1.1.1.1. Longitudinal loading (Annex III, 1.2)
For tractors with at least 50 % of the mass as defined in section 1.3
on the rear wheels the longitudinal loading shall be applied fromthe r ear(case 1). Forothertr actor s the longitudinal loading shall beapplied from the front (case 2).
3.1.1.1.2. First crushing test
The first crushing test shall be applied at the same end of the
protection structure as the longitudinal loading, i. e.:
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— at the rear in case 1 (Annex III, 1.5),
— at the front in case 2 (Annex III, 1.6),
3.1.1.1.3. Loading from the side (Annex III, 1.3)
3.1.1.1.4. Second crushing test
The second crushing test shall be applied at the opposite end of the
protection structure to the longitudinal loading, i.e.:
— at the front in case 1 (Annex III, 1.6),
— at the rear in case 2 (Annex III, 1.5).
3.1.1.1.5. Second longitudinal loading (Annex III, 1.7)
A second longitudinal loading shall be applied to tractors fitted with
a protection structure designed to be tilted when the direction ofapplication of the longitudinal loading (see section 3.1.1.1.1) wouldnot have tilted the protection structure.
3.1.1.2. If, during the test, any part of the restraining equipment breaks or
moves, the test shall be re-started.
3.1.1.3. No repairs or adjustments to the tractor or protection structure may
be carried out during the tests.
3.1.2. Wheel trackwidth
The wheels shall be removed or set at a track width setting which
ensures that no interference can occur with the protection structureduring the tests.
3.1.3. Removal of non-hazard creating components
All components of the tractor and protection structure which, as
complete units, constitute protection for the driver — includingweather protection — shall be supplied complete on a tractor forinspection.
The protection structure to be tested need not be fitted with front,
side orr earwindows of safety glass orsimilarmater ial and anydetachable panels, fittings and accessories which have no functionof structural strength and which cannot create a hazard in the eventof overturning.
3.1.4. Instrumentation
The protection structure shall be instrumented with the necessary
equipment to obtain the data required to draw the force-deflectiondiagram (see figure 4 of Annex IV). Total and permanent protectionstructure deflection shall be measured and noted for each stage ofthe test (see figure 5 of Annex IV).
3.1.5. Direction of loading
In the case of a tractor whose seat is not on the median plane of the
tractor and/or non-symmetrical strength of the structure, the sideloading will be on the side most likely to lead to infringement ofthe zone of clearance during the tests (see also Annex III, 1.3).
4. ACCEPTANCE CONDITIONS
4.1. A protection structure submitted for EEC component type-approval
shall be considered as having satisfied the strength requirements ifafterthe tests it fulfils the following conditions:
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4.1.1. No part of the zone of clearance as described in Item 3.2 of Annex
III has been entered by, or has been outside the protection of, theprotection structure during the tests specified in Items 1.2, 1.3, 1.5,1.6 and, where appropriate, 1.7 of Annex III.
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If an overload test has been carried out, the force applied when the
specified energy is absorbed shall be greater than 0 ·8o ft h e
maximum force occuring during both the main test and the overloadtest concerned (see figures 4b and 4c of Annex IV).
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4.1.►M12◄. During the tests the protection structure must not impose any
constraint on the seat structure.
▼M1 4.1.3. At the point when the required energy level is attained in each of
the specified horizontal loading tests, the force shall exceed 0 ·8
Fmax.
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4.2. In addition there shall be no other feature presenting a particular
hazard to the driver e.g. insufficient padding inside the roof oranywhere else where the driver’s head may strike.
5. TEST REPORT
5.1. The test report shall be attached to the EEC component type-
approval certificate referred to in Annex VII. The presentation ofthe report shall be as shown in Annex V. It shall include:
5.1.1. A general description of the protection structure’s shape and
construction (see Annex V for the obligatory dimensions), includingthe provisions for normal entry, exit and escape; the provisions forheating and ventilation system, and other accessories where theseare available and where they could affect the zone of clearance ormight create a hazard.
5.1.2. Details of any special features such as devices to prevent the
continuous rolling of the tractor.
5.1.3. A brief description of any interior padding.5.1.4. A statement of the type of windscreen and glazing fitted and of any
EEC or other approval marking incorporated.
5.2. If EEC component type-approval is being extended for other tractor
types, the report must include the exact reference of the report ofthe original EEC component type-approval as well as precise indi-cations regarding the requirements laid down in section 3.4 ofAnnex I.
5.3. The report must identify clearly the tractor type (make, type and
commercial description, etc.) used for testing and the types forwhich the protection structure is intended.
6. SYMBOLS
m
t= reference tractor mass (kg), as defined in section 1.3.
D = deflection (mm) of structure at the point of and in line
with the load application.
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D/prime1= deflection (mm) of structure for the calculated energy
required.
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F = static load force (N) (newtons).
Fmax= maximum static load force occurring during loading, (N)
with the exception of the overload.
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F/prime1= force for the calculated energy required.
F-D = force/deflection curve.
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Eis= energy input to be absorbed during side loading (J)
(joules).
Eil1= energy input to be absorbed during longitudinal loading
(J).
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Eil 2= energy input to be absorbed during application of the
second longitudinal load (J).
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Fr= applied force at rear in the crushing test (N).
Ff= applied force at front in the crushing test (N).
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ANNEX III
TEST PROCEDURE
1. HORIZONTAL LOADING AND CRUSHING TESTS1.1. General provisions for horizontal loading tests
1.1.1. The loads applied to the protection structure shall be distributed by
means of a stiff beam, complying with the specifications laid down insection 2.1.2 of Annex II, located normal to the direction of loadapplication; the stiff beam may be equipped with a means ofpreventing its being displaced sideways. The rate of deflection underloading shall not be greater than 5 mm/s. As the load is applied, Fand D shall be recorded simultaneously at deflection increments of 15mm or less, to ensure accuracy. Once the initial application hascommenced, the load shall not be reduced until the test has beencompleted; but it is permitted to cease increasing the load if desired,e.g. to record measurements.
1.1.2. If the structural member to which the load is to be applied is curved,
the specifications laid down in section 2.1.2.5 of Annex II must becomplied with. The application of a load must, however, comply withthe requirements of section 1.1.1 above and section 2.1.2 of Annex II.
1.1.3. If no structural cross member exists at the point of application, a
substitute test beam which does not add strength to the structure maybe utilized for the test procedure.
1.1.4. The structure shall be inspected visually when the load is removed
aftereach loading test has been completed. If cr acks ortear s haveoccurred during loading, the overload test specified in 1.4 below shallbe carried out before proceeding to the next loading in the sequencegiven in section 3.1.1.1 of Annex II.
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1.2. Longitudinal loading (see Figure 2 of Annex IV)
Load application shall be horizontal and parallel to the verticalmedian plane of the tractor.For tractors with at least 50 % of their mass, as defined in Item 1.3 ofAnnex II, on the rear wheels, the longitudinal rear load and the lateralload shall be applied on different sides of the median longitudinalplane of the protection structure. For tractors with at least 50 % oftheir mass on the front wheels, the longitudinal front load shall be onthe same side of the median longitudinal plane of the protectionstructure as the lateral load.It shall be applied to the uppermost transverse structural member ofthe protection structure (i.e. the part which would be likely to strikethe ground first in an overturning incident).The point of application of the load shall be located one-sixth of thewidth of the top of the protection structure inwards from the outsidecorner. The width of the protection structure shall be taken as thedistance between two lines parallel to the vertical median plane of thetractor touching the outside extremities of the protection structure inthe horizontal plane touching the top of the uppermost transversestructural members.The length of the beam shall be not less than one-third of the width ofthe protection structure (as previously described) and not more than49 mm greater than this minimum.The longitudinal loading is applied from the rear or front, as definedin Item 3.1.1.1 of Annex II.The test shall be stopped whenever:
(a) the strain energy absorbed by the protection structure is equal to
or greater than the required energy input E
il 1(where Eil 1=1 ·4
mt);
(b) the structure infringes the zone of clearance or leaves the zone of
clearance unprotected.
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1.3. Loading from the side (see Figure 1 of Annex IV)
The loading shall be applied horizontally at 90 °to the vertical median
plane of the tractor. It shall be applied to the upper extremity of theprotection structure at a point 300 mm forward of the seat referencepoint with the seat in its rearmost position as defined in section 2.3.1below. If the protection structure has any projection on the side whichwould be certain to contact the ground first during a sideways over-turn, the loading shall be applied at that point.
The beam shall be as long as practicable, but no more than 700 mm
in length.
Stop the test whenever:
(a) the strain energy absorbed by the protection structure is equal to
or greater than the required energy input E
is(where Eis=1 ·75
mt); or
(b) the structure infringes the zone of clearance or leaves the zone of
clearance unprotected.
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1.4. Overload test
1.4.1. Where tearing, cracking or bending occurs during a horizontal
loading test, an overload test may be required to determine theresidual strength of the structure and to ensure that it is sufficient towithstand any successive roll-overs (see figures 4a, 4b and 4c).
An overload test shall be carried out in all cases where the force
decreases by more tha n3%d u ri n gt h el a s t5%o ft h e deflection
reached when the energy required is absorbed by the structure (seefigure 4b).
1.4.2. The overload test involves the gradual increase of the horizontal load
by increments o f5%o ft h e initial energy requirement up to a
maximum of 20 % of energy added (see figure 4c).
1.4.2.1. The overload test is satisfactory if, after each increase by 5, 10 or 15
% in the energy required, the force decreases by less tha n3%f o ra5
% increment and remains more than 0 ·8F
max.
1.4.2.2. The overload test is satisfactory if, after the structure has absorbed 20
% of the added energy, the force exceeds 0 ·8Fmax.
1.4.2.3. Additional cracks or tears and/or entry into or lack of protection of
the zone of clearance due to elastic deformation are permitted duringthe overload test. However, after the removal of the load, the struc-ture shall not enter the zone of clearance, which shall be completelyprotected.
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1.5. Crushing at the rear
The beam shall be positioned over the rear uppermost structural
members and the resultant of crushing forces shall be located in thevertical longitudinal reference plane. A force F
r=2 0mtshall be
applied.
Where the rear part of the protection structure roof will not sustain
the full crushing force, the force shall be applied until the roof isdeflected to coincide with the plane joining the upperpar t of theprotection structure with that part of the rear of the tractor capable ofsupporting the vehicle’s mass when overturned. The force shall thenbe removed, and the tractor or loading force repositioned so that thebeam is over that point of the protection structure which would thensupport the tractor when completely overturned. The force F
rshall
then be applied.
The force Frshall be applied fora minimum of five seconds
following the cessation of the visually detectable deflection.
Stop the test if the structure infringes the zone of clearance or leaves
the zone of clearance unprotected.
1.6. Crushing at the front
The beam shall be positioned across the front uppermost structural
members and the resultant of crushing forces shall be located in the
1979L0622 — EN — 04.01.1983 — 001.001 — 15
▼B
vertical longitudinal reference plane. A force Ff=2 0mtshall be
applied.
Where the front part of the protection structure roof will not sustain
the full crushing force, the force shall be applied until the roof isdeflected to coincide with the plane joining the upperpar t of theprotection structure with that part of the front of the tractor capable ofsupporting the vehicle’s mass when overturned. The force shall thenbe removed, and the tractor or loading force repositioned so that thebeam is over that point of the protection structure which would thensupport the tractor when completely overturned. The force F
fshall
then be applied.
The force Ffshall be applied fora minimum of five seconds
following the cessation of the visually detectable deflection.
Stop the test if the structure infriges the zone of clearance or leaves
the zone of clearance unprotected.
1.7. Second longitudinal loading
Load application shall be horizontal parallel to the vertical median
plane of the tractor.
The second longitudinal loading is applied from the rear or front as
defined in section 3.1.1.1 of Annex II.
It shall be applied in the opposite direction to and at the corner
furthest from the longitudinal loading in section 1.2.
It shall be applied to the uppermost transverse structural member of
the protection structure (i.e. that part which would be likely to strikethe ground in an overturning incident).
The point of application of the load shall be located one sixth of the
width of the top of the protection structure inwards from the outsidecorner. The width of the protection structure shall be taken as thedistance between two lines parallel to the vertical median plane of thetractor touching the outside extremities of the protection structure inthe horizontal plane touching the top of the uppermost transversestructural members.
The length of the beam shall be not less than one third of the width of
the protection structure (as previously described) and not more than49 mm more than this minimum.
Stop the test whenever:
(a) the strain energy absorbed by the structure is equal to or greater
than the required energy input E
il2(where Eil2=0 ·35 mt); or
(b) the structure infringes the zone of clearance or leaves the zone of
clearance unprotected.
2. ZONE OF CLEARANCE
2.1. The zone of clearance is illustrated in figure 6 of Annex IV and is
defined in relation to a vertical reference plane generally longitudinalto the tractor and passing through a seat reference point, described insection 2.3, and the centre of the steering wheel. The reference planeshall be assumed to move horizontally with the seat and steeringwheel during application of the load but to remain perpendicular tothe floor of the tractor or of the protection structure if this is resili-ently mounted.
Where the steering wheel is adjustable, its position should be that for
normal seated driving.
2.2. The boundaries of the zone shall be taken as:2.2.1. vertical planes 250 mm on either side of the reference plane
extending upwards from the seat reference point for 300 mm;
2.2.2. parallel planes extending from the upper edge of plane 2.2.1 to a
maximum height of 900 mm above the seat reference point andinclined in such a way that the upperedge of the plane on the sidefrom which the side loading is applied is at least 100 mm from thereference plane;
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▼B
2.2.3. a horizontal plane 900 mm above the seat reference point;
2.2.4. an inclined plane perpendicular to the reference plane and including a
point 900 mm directly above the seat reference point and the rearmostpoint of the seat backrest;
2.2.5. a surface, if necessary curved, with a series of straight lines perpen-
dicular to the reference plane extending downwards from the rear-most point of the seat in contact with the seat backrest throughout itslength;
2.2.6. a curvilinear surface, perpendicular to the reference plane, with a
radius of 120 mm tangential to planes 2.2.3 and 2.2.4;
2.2.7. a curvilinear surface, perpendicular to the reference plane, having a
radius of 900 mm extending forward for 400 mm from and tangentialto plane 2.2.3 at a point 150 mm forward of the seat reference point;
2.2.8. an inclined plane perpendicular to the reference plane, joining surface
2.2.7 at its forward edge and passing 40 mm from the steering wheel.In the case of a high steering wheel position this plane is replaced bya tangent plane to the surface 2.2.7;
2.2.9. a vertical plane, perpendicular to the reference plane, 40 mm forward
of the steering wheel;
2.2.10. a horizontal plane through the seat reference point.
2.3. Seat location and seat reference point
2.3.1. For the purpose of defining the zone of clearance in section 2.1 the
seat shall be at the rearmost point of any horizontal adjustment range.It shall be set at the highest point of the vertical adjustment rangewhere this is independent of adjustment of its horizontal position.
The reference point shall be established using the apparatus illustrated
in figures 7 and 8 of Annex IV to simulate loading by a humanoccupant. The apparatus shall consist of a seat pan board and backrestboards. The lower backrest board shall be jointed in the region of theischium humps (A) and loin (B), the joint (B) being adjustable inheight.
2.3.2. The reference point is defined as the point in the median longitudinal
plane of the seat where the tangential plane of the lower backrest anda horizontal plane intersect. This horizontal plane cuts the lowersurface of the seat pan board 150 mm in front of the abovementionedtangent.
2.3.3. Where a seat incorporates a free sprung suspension travel, whether or
not this can be adjusted for the weight of the driver, the seat shall beset at the mid-point of this travel.
The apparatus shall be positioned on the seat. It shall then be loaded
with a force of 550 N at a point 50 mm in front of joint (A), and thetwo parts of the backrest board shall be lightly pressed tangentiallyagainst the backrest.
2.3.4. If it is not possible to determine definite tangents to each area of the
backrest (below and above lumbar region) the following should bedone:
2.3.4.1. where no definite tangent to the lower area is possible, the lower part
of the backrest board is pressed against the backrest vertically;
2.3.4.2. where no definite tangent to the upper area is possible, the joint (B) is
fixed at a height which is 230 mm above the seat reference point, ifthe lower part of the backrest board is vertical. Then the two parts ofthe backrest board are lightly pressed against the backrest.
3. CONTROLS AND MEASUREMENTS TO BE MADE
▼
M1
▼B
3.►M11◄.Zone of clearance
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▼B
During each test the protection structure shall be examined to
see whether any part of the protection structure has entered azone of clearance round the driving seat as defined in section2.1. In addition, the protection structure shall be examined todetermine whether any part of the zone of clearance is outsidethe protection of the protection structure. For this purpose, itshall be considered to be outside the protection of the protectionstructure if any part of it would have come into contact with flatground if the tractor had overturned towards the direction fromwhich the loading was applied. For this purpose, the tyre andtrack setting shall be assumed to be the smallest specified bythe manufacturer.
3.►
M12◄.Final permanent deflection
After the tests, the final permanent deflection of the protection
structure shall be recorded. For this purpose, before the start ofthe test, the position of the main protection structure membersin relation to the seat reference point shall be recorded.
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▼B
ANNEX IV
▼M1
FIGURES
Figure 1: Point of application of lateral load
Figure 2: Point of application of longitudinal rear loadFigure 3: Example of an arrangement for crushing testFigure 4a: Force/deflection curve — overload test not necessaryFigure 4b: Force/deflection curve — overload test necessaryFigure 4c: Force/deflection curve — overload test to be continuedFigure 5: Illustration of the terms permanent, elastic and total deflectionFigure 6a: Side view of zone of clearanceFigure 6b: Front/rear view of zone of clearanceFigure 6c: Isometric viewFigure 7: Apparatus for determination of seat reference pointFigure 8: Method of determining seat reference point
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▼B
►(1)M1
1979L0622 — EN — 04.01.1983 — 001.001 — 20
▼B
Figure 3
Example of an arrangement for crushing test
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▼M1
1. Point of reference aF /prime1=0 ·95 D/prime1.
1.1. The overload test is not necessary since aF /prime1<1·03 F/prime1.
Figure 4a
Force/deflection curve — overload test not necessary
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▼M1
1. Reference point aF /prime1=0 ·95 D/prime1.
1.1. The overload test is necessary since aF /prime1>1·03 F/prime1.
1.2. The overload test is satisfactory since bF /prime1>0·97 F/prime1and bF /prime1>0·8Fmax.
Figure 4b
Force/deflection curve — overload test necessary
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▼M1
1. Reference point aF /prime1=0 ·95 D/prime1.
1.1. The overload test is necessary since aF /prime1>1·03 F/prime1.
1.2. Since bF /prime1<0·97 aF/prime1the overload test must be continued.
1.3. Since cF /prime1<0·97 bF/prime1the overload test must be continued.
1.4. Since dF /prime1<0·97 cF/prime1the overload test must be continued.
1.5. The overload test is satisfactory since eF /prime1>0·8Fmax.
NB:If at any time F drops below 0 ·8Fmax, the structure is rejected.
Figure 4c
Force/deflection curve — overload test to be continued
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▼B
Figure 5
Illustration of the terms permanent, elastic and total deflection
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▼B
Figure 6a
Side view of zone clearance
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▼B
Figure 6b
Front/rear view of zone of clearance
Figure 6c
Isometric view
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▼B
Figure 7
Apparatus for determination of seat reference point
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▼B
Figure 8
Method of determining seat reference point
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▼B
ANNEX V
MODEL
REPORT RELATING TO THE EEC COMPONENT TYPE-APPROVAL TEST OF A PROTEC-
TION STRUCTURE (SAFETY FRAME OR CAB) WITH REGARD TO ITS STRENGTH AS
WELL AS TO THE STRENGTH OF ITS ATTACHMENT TO THE TRACTOR
(Static testing)

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▼B

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▼B

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▼B

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ANNEX VI
MARKS
The EEC component type-approval mark shall consist of a rectangle surrounding
the lowercase letter ‘e' followed by the distinguishing letter(s) or number of theMember State which has granted the component type-approval:
1 forGer many,2 forFr ance,3 forItaly,4 forthe Nether lands,6 forBelgium,
11 forthe United Kingdom,13 forLuxembour g,18 forDenmar k,
IRL forIr eland.
It must also include in the vicinity of the rectangle the EEC component type-
approval number which corresponds to the number of the EEC component type-approval certificate issued with regard to the strength of the type of protectionstructure and its attachment to the tractor.
Example of an EEC component type-approval mark
The EEC component type-approval mark shall be supplemented by an additional
symbol ‘S'
The protection structure bearing the EEC component type-approval mark shownabove is a structure for which EEC component type-approval was granted inGer many (e 1) underthe number1471.
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▼B
ANNEX VII
MODEL
EEC COMPONENT TYPE-APPROVAL CERTIFICATE

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▼B
ANNEX VIII
CONDITIONS FOR EEC TYPE-APPROVAL
1. The application for EEC type-approval of a tractor, with regard
to the strength of a protection structure and the strength of itsattachment to the tractor, shall be submitted by the tractormanufacturer or by his authorized representative.
2. A tractor representative of the tractor type to be approved, on
which a protection structure and its attachment, duly approved,are mounted, shall be submitted to the technical services respon-sible forconducting the type-appr oval tests.
3. The technical service responsible for conducting the type-
approval tests shall check whether the approved type of protec-tion structure is intended to be mounted on the type of tractorfor which the type-approval is requested. In particular, it shallascertain that the attachment of the protection structure corre-sponds to that which was tested when the EEC componenttype-approval was granted.
4. The holderof the EEC type-appr oval may ask forits extension
for other types of protection structures.
5. The competent authorities shall grant such extension on the
following conditions:
5.1. the new type of protection structure and its tractor attachment
have received EEC component type-approval;
5.2. it is designed to be mounted on the type of tr actorforwhich the
extension of the EEC type-approval is requested;
5.3. the attachment of the protection structure to the tractor corre-
sponds to that which was tested when EEC component type-approval was granted.
6. A certificate, of which a model is shown in Annex IX, shall be
annexed to the EEC type-approval certificate for each type-approval or type-approval extension which has been granted orrefused.
7. If the application forEEC type-appr oval fora type of tr actoris
introduced at the same time as the request for EEC componenttype-approval for a type of protection structure intended to bemounted on the type of tr actorforwhich EEC type-appr oval isrequested, the checks laid down in 2 and 3 will not be made
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▼B
ANNEX IX
MODEL