This document is meant purely as documentation tool and the institutions do not assume any liability for its contents
"BCOUNCIL DIRECTIVE
of 25 June 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
"M1 Commission Directive 82/953/EEC of 15 December 1982 L 386 31 31.12.1982
Amended by:
"A1 Act of Accession of Spain and Portugal L 302 23 15.11.19851979L0622 — EN — 01.01.1986 — 002.001 — 1
COUNCIL DIRECTIVE
of 25 June 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
structures 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 same
requirements either in addition to or in place of their existing rules in
order, in particular, to allow the EEC type-approval procedure which was
the subject of Council Directive 74/150/EEC of 4 March 1974 on the
approximation of the laws of the Member States relating to the
type-approval of wheeled agricultural or forestry tractors (3)t ob e
introduced 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 it possible
for each Member State to check compliance with the common
construction and testing requirements and to inform the other Member
States of its findings by sending them copies of the component
type-approval certificate completed for each type of roll-over protection
structure and its attachment to the tractor; whereas the placing of an EEC
component type-approval mark on all structures manufactured in
conformity with the approved type obviates any need for technical
checks on those structures in the other Member States;
Whereas common requirements concerning other elements and char-
acteristics of the roll-over protection structure, in particular those
concerning the dimensions, doors, safety glass, devices to prevent
continuous rolling if the tractor overturns, and protection of passengers,
will be laid down at a later date;
Whereas the harmonized requirements are intended principally to ensure
safety on the road and at work throughout the Community; whereas for
this reason it is necessary to introduce the obligation for tractors covered
by this Directive to be fitted with roll-over protection structures; whereas
until a date to be determined, the tractors referred to in Council Directive
77/536/EEC of 28 June 1977 on the approximation of the laws of the
Member States relating to the roll-over protection structures of wheeled
agricultural or forestry tractors (4) should be able to be fitted with
roll-over protection structures complying either with Directive
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 carried out
by each of them on the basis of the common requirements,!B
(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. 1.1979L0622 — EN — 01.01.1986 — 002.001 — 2
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 attachment which
satisfies the construction and testing requirements laid down in Annexes
It oV .
2. A Member State which has granted EEC component type-approval
shall take the measures required to verify, in so far as is necessary and if
need be in cooperation with the competent authorities in the other
Member 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 to
the manufacturer of the tractor or of the roll-over protection structure, or
to his authorized representative, an EEC component type-approval mark
conforming 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 structures
which have been component type-approved pursuant to Article 1 and
other devices.
Article 3
1. No Member State may prohibit the placing on the market of roll-over
protection structures or their tractor attachments on grounds relating 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 component
type-approval mark which consistently fail to conform to the approved
type.
That State shall forthwith inform the other Member States and the
Commission of the measures taken, specifying the reasons for its
decision.
Article 4
The competent authorities of each Member State shall within one month
send to the competent authorities of the other Member States copies of
the component type-approval certificates, an example of which is given
in Annex VII, completed for each type of roll-over protection structure
which they approve or refuse to approve.
Article 5
1. If the Member State which has granted EEC component type-appro-
val finds that a number of roll-over protection structures and their tractor
attachments bearing the same EEC component type-approval mark do
not conform to the type which it has approved, it shall take the necessary
measures to ensure that production models conform to the approved type.
The competent authorities of that State shall advise those of the other
Member States of the measures taken which may, if necessary, where
there is serious and repeated failure to conform, extend to withdrawal of
EEC component type-approval. The said authorities shall take the same
measures if they are informed by the competent authorities of another
Member State of such failure to conform.
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.!B1979L0622 — EN — 01.01.1986 — 002.001 — 3
Article 6
Any decision taken pursuant to the provisions adopted in implementation
of this Directive to refuse or withdraw component type-approval for
roll-over protection structures and their tractor attachments, or to
prohibit their placing on the market or their use, shall set out in detail the
reasons on which it is based. Such decision shall be notified to the party
concerned, who shall at the same time be informed of the remedies
available to him under the laws in force in the Member States and 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-over
protection structure or its tractor attachment if these bear the EEC
component type-approval mark and if the requirements laid down in
Annex 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
protection structure and its tractor attachment if these bear the EEC
component type-approval mark and if the requirements laid down in
Annex VIII 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 or more,
— 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 in compliance with
this Directive and tyres of the largest size recommended 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 satisfies
the 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-over
protection structure which satisfies the requirements laid down in
Annexes 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 in
accordance with the procedure laid down in Article 13 of Directive
74/150/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 notification
and shall forthwith inform the Commission thereof.!B1979L0622 — EN — 01.01.1986 — 002.001 — 4
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 are
communicated to the Commission.
Article 13
This Directive is addressed to the Member States.!B1979L0622 — EN — 01.01.1986 — 002.001 — 5
LIST OF ANNEXES
Annex I: Conditions for EEC component type-approval
Annex II: Conditions for testing the strength of the protection structures
and of their attachment to tractors
Annex III: Test procedures
Annex IV: Figures
Annex V: Test report model
Annex VI: Marks
Annex VII: Model of EEC component type-approval certificate
Annex VIII: Conditions for EEC type-approval
Annex IX: Annex to the EEC type-approval certificate for a tractor with
regard to the strength of the protection structures and of theirattachment to the tractor (static tests).!
B1979L0622 — EN — 01.01.1986 — 002.001 — 6
ANNEX I
CONDITIONS FOR EEC COMPONENT TYPE-APPROV AL
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 in
section 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-APPROV AL
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 a
tractor shall be submitted by the tractor manufacturer or by themanufacturer of the protection structure or by his authorized represen-tatives.
3.2. The application for EEC component type-approval shall be accom-
panied by the undermentioned documents in triplicate and by thefollowing particulars:
— general arrangement drawing either to a scale marked on the
drawing or giving the main dimensions of the protection structure.This drawing must in particular show details of the mountingcomponents,
— photographs from side and rear showing mounting details,
— brief description of the protection structure including type of
construction, details of mounting on the tractor and, where
necessary, details of cladding, means of access and escape, details
of interior padding and features to prevent continuous rolling anddetails of heating and ventilation,
— 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
structure to be approved is intended shall be submitted to the technical
service responsible for conducting the component type-approval tests.
This tractor shall 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
original 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 than 5 % the reference massused 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,
— the position and critical dimensions of the seat in the protection
structure and the relative positions of the protection structure and!
B1979L0622 — EN — 01.01.1986 — 002.001 — 7
the tractor shall be such that the zone of clearance would have
remained within 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.!
B1979L0622 — EN — 01.01.1986 — 002.001 — 8
ANNEX II
CONDITIONS FOR TESTING THE STRENGTH OF THE PROTECTION
STRUCTURES AND OF THEIR ATTACHMENT TO TRACTORS
1. GENERAL REQUIREMENTS
1.1. Test purposes
Tests made using special rigs are intended to simulate such loads as are
imposed on a protection structure, when the tractor overturns. Thesetests, described in Annex III, enable observations to be made on the
strength of the protection structure and any brackets attaching it to the
tractor and any parts of the tractor which transmit the 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 manufacturer’s
declared method of attachment to one of the tractors for which it is
designed. A complete tractor is not required for the test; however, theprotection structure and parts of the tractor on which it is attached forthe 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 significantly inrelation to the protection structure under loading. The method of
attachment of the assembly to the bedplate must not of itself 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 its attachment 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 does not absorbany of the test energy.
1.2.4. For the tests the tractor must be fitted with all structural components of
the series production which may influence the strength of the protectionstructure or which may be necessary for the strength test.
Components which may create a hazard in the zone of clearance must
also be fitted so that they may be examined to see whether therequirements 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 that defined 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 or any specialized components.
2. APPARATUS AND EQUIPMENT
2.1. 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.!
B1979L0622 — EN — 01.01.1986 — 002.001 — 9
2.1.2.2. Provision must be made so that the load can be uniformly distributed
normal to the direction of loading and along a beam having a 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 in rotation or
translation in any direction other than the direction of loading.
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 the directionof application of the load, the space shall be packed so as to distributethe load over this length.
2.1.3. Equipment for measuring as far as is technically possible the energy
absorbed by the protection structure and the rigid parts of the tractor to
which it is attached, for example by measuring the force applied along
its direction of application and the corresponding deflection relative to apoint 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 Annex IV canbe 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 beam with awidth 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 Annex IV canbe used.
2.3. Measurement tolerances
2.3.1. Dimensions: ± 3 mm.
2.3.2. Deflection: ± 3 mm.
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 directions
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. TESTS
3.1. 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 from the rear
(case 1). For other tractors the longitudinal loading shall be applied fromthe front (case 2).!
B1979L0622 — EN — 01.01.1986 — 002.001 — 10
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.:
— 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 of
application of the longitudinal loading (see section 3.1.1.1.1) would
not 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 track width
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 — including weatherprotection — shall be supplied complete on a tractor for inspection.
The protection structure to be tested need not be fitted with front, side or
rear windows of safety glass or similar material and any detachablepanels, fittings and accessories which have no function of structuralstrength and which cannot create a hazard in the event of overturning.
3.1.4. Instrumentation
The protection structure shall be instrumented with the necessary
equipment to obtain the data required to draw the force-deflection
diagram (see figure 4 of Annex IV). Total and permanent protection
structure deflection shall be measured and noted for each stage of thetest (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 side loading
will be on the side most likely to lead to infringement of the 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 if after
the tests it fulfils the following conditions:
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, the protection!B
!M11979L0622 — EN — 01.01.1986 — 002.001 — 11
structure during the tests specified in Items 1.2, 1.3, 1.5, 1.6 and, where
appropriate, 1.7 of Annex III.
If an overload test has been carried out, the force applied when the
specified energy is absorbed shall be greater than 0.8of the maximum
force occuring during both the main test and the overload test concerned(see figures 4b and 4c of Annex IV).
4.1."
M123. During the tests the protection structure must not impose any
constraint on the seat structure.
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 0.8Fmax.
4.2. In addition there shall be no other feature presenting a particular hazard
to the driver e.g. insufficient padding inside the roof or anywhere 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 of the 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 these are
available and where they could affect the zone of clearance or might
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 of theoriginal EEC component type-approval as well as precise indications
regarding the requirements laid down in section 3.4 of Annex I.
5.3. The report must identify clearly the tractor type (make, type and
commercial description, etc.) used for testing and the types for which
the protection structure is intended.!
M1
!B
!M1
!B1979L0622 — EN — 01.01.1986 — 002.001 — 12
6. SYMBOLS
mt = 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.
D’ = deflection (mm) of structure for the calculated energy
required.
F = static load force (N) (newtons).
Fmax = maximum static load force occurring during loading, (N) with
the exception of the overload.
F’ = force for the calculated energy required.
F-D = force/deflection curve.
Eis = energy input to be absorbed during side loading (J) (joules).
Eil1 = energy input to be absorbed during longitudinal loading (J).
Eil 2 = energy input to be absorbed during application of the second
longitudinal load (J).
Fr = applied force at rear in the crushing test (N).
Ff = applied force at front in the crushing test (N).!B
!M1
!B
!M1
!B
!M1
!B
!M11979L0622 — EN — 01.01.1986 — 002.001 — 13
ANNEX III
TEST PROCEDURE
1. HORIZONTAL LOADING AND CRUSHING TESTS
1.1. 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 of preventing
its being displaced sideways. The rate of deflection under loading shall
not be greater than 5 mm/s. As the load is applied, F and D shall berecorded simultaneously at deflection increments of 15 mm or less, toensure accuracy. Once the initial application has commenced, the load
shall not be reduced until the test has been completed; 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 be complied
with. The application of a load must, however, comply with the
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 may beutilized for the test procedure.
1.1.4. The structure shall be inspected visually when the load is removed after
each loading test has been completed. If cracks or tears have occurred
during loading, the overload test specified in 1.4 below shall be carriedout before proceeding to the next loading in the sequence given insection 3.1.1.1 of Annex II.
1.2. Longitudinal loading (see Figure 2 of Annex IV)
Load application shall be horizontal and parallel to the vertical median
plane of the tractor.
For tractors with at least 50 % of their mass, as defined in Item 1.3 of
Annex II, on the rear wheels, the longitudinal rear load and the lateralload shall be applied on different sides of the median longitudinal planeof the protection structure. For tractors with at least 50 % of their mass
on the front wheels, the longitudinal front load shall be on the same side
of the median longitudinal plane of the protection structure as the lateralload.
It shall be applied to the uppermost transverse structural member of the
protection structure (i.e. the part which would be likely to strike theground first 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 the
distance between two lines parallel to the vertical median plane of the
tractor touching the outside extremities of the protection structure in thehorizontal plane touching the top of the uppermost transverse structuralmembers.
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 than 49mm greater than this minimum.
The longitudinal loading is applied from the rear or front, as defined in
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 E il 1=1.4mt);
(b) the structure infringes the zone of clearance or leaves the zone of
clearance unprotected.!B
!M11979L0622 — EN — 01.01.1986 — 002.001 — 14
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 the
protection structure at a point 300 mm forward of the seat reference
point 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 overturn,
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 E is=1.75mt); or
(b) the structure infringes the zone of clearance or leaves the zone of
clearance unprotected.
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 the residual strengthof the structure and to ensure that it is sufficient to withstand anysuccessive roll-overs (see figures 4a, 4b and 4c).
An overload test shall be carried out in all cases where the force
decreases by more than 3 % during the last 5 % of the deflection reachedwhen the energy required is absorbed by the structure (see figure 4b).
1.4.2. The overload test involves the gradual increase of the horizontal load by
increments of 5 % of the initial energy requirement up to a maximum of20 % 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 than 3 % for a 5 %
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 during the
overload test. However, after the removal of the load, the structure shallnot enter the zone of clearance, which shall be completely protected.
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 0m tshall 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 is deflectedto coincide with the plane joining the upper part of the protectionstructure with that part of the rear of the tractor capable of supporting
the vehicle’ s mass when overturned. The force shall then be removed,
and the tractor or loading force repositioned so that the beam is over thatpoint of the protection structure which would then support the tractorwhen completely overturned. The force F
rshall then be applied.
The force F rshall be applied for a 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
vertical longitudinal reference plane. A force F f=2 0m tshall 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 is deflectedto coincide with the plane joining the upper part of the protection
structure with that part of the front of the tractor capable of supporting!
B
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!B1979L0622 — EN — 01.01.1986 — 002.001 — 15
the vehicle’ s mass when overturned. The force shall then be removed,
and the tractor or loading force repositioned so that the beam is over that
point of the protection structure which would then support the tractor
when completely overturned. The force F fshall then be applied.
The force F fshall be applied for a 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 strike the
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 outside
corner. The width of the protection structure shall be taken as the
distance between two lines parallel to the vertical median plane of thetractor touching the outside extremities of the protection structure in thehorizontal plane touching the top of the uppermost transverse structural
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 than 49
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 E il2=0.35mt); 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 longitudinal to
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 steering wheel
during application of the load but to remain perpendicular to the floor of
the tractor or of the protection structure if this is resiliently 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 and inclinedin such a way that the upper edge of the plane on the side from which theside loading is applied is at least 100 mm from the reference plane;
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
perpendicular to the reference plane extending downwards from therearmost point of the seat in contact with the seat backrest throughout its
length;
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;!
B1979L0622 — EN — 01.01.1986 — 002.001 — 16
2.2.7. a curvilinear surface, perpendicular to the reference plane, having a
radius of 900 mm extending forward for 400 mm from and tangential to
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 by a
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 shallbe set at the highest point of the vertical adjustment range where 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 human
occupant. The apparatus shall consist of a seat pan board and backrest
boards. The lower backrest board shall be jointed in the region of theischium humps (A) and loin (B), the joint (B) being adjustable in height.
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 and a
horizontal plane intersect. This horizontal plane cuts the lower surface
of the seat pan board 150 mm in front of the abovementioned tangent.
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 be setat 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 the twoparts of the backrest board shall be lightly pressed tangentially against
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 be done:
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, if thelower part of the backrest board is vertical. Then the two parts of thebackrest board are lightly pressed against the backrest.
3. CONTROLS AND MEASUREMENTS TO BE MADE
3."M113.Zone of clearance
During each test the protection structure shall be examined to see
whether any part of the protection structure has entered a zone of
clearance round the driving seat as defined in section 2.1. In addition,
the protection structure shall be examined to determine whether any partof the zone of clearance is outside the protection of the protectionstructure. For this purpose, it shall be considered to be outside the
protection of the protection structure if any part of it would have come
into contact with flat ground if the tractor had overturned towards thedirection from which the loading was applied. For this purpose, the tyreand track setting shall be assumed to be the smallest specified by the
manufacturer.
3."
M123.Final permanent deflection
After the tests, the final permanent deflection of the protection structure
shall be recorded. For this purpose, before the start of the test, the!B
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!B1979L0622 — EN — 01.01.1986 — 002.001 — 17
position of the main protection structure members in relation to the seat
reference point shall be recorded.!B1979L0622 — EN — 01.01.1986 — 002.001 — 18
ANNEX IV
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!
B
!M11979L0622 — EN — 01.01.1986 — 002.001 — 19
!B1979L0622 — EN — 01.01.1986 — 002.001 — 20
Figure 3
Example of an arrangement for crushing test!B1979L0622 — EN — 01.01.1986 — 002.001 — 21
!M1
1. Point of reference aF ’=0.95D’.
1.1. The overload test is not necessary since aF ’5 1.03F’.
Figure 4a
Force/deflection curve — overload test not necessary1979L0622 — EN — 01.01.1986 — 002.001 — 22
1. Reference point aF ’=0.95D’.
1.1. The overload test is necessary since aF ’41.03F’.
1.2. The overload test is satisfactory since bF ’40.97F’and bF ’40.8Fmax.
Figure 4b
Force/deflection curve — overload test necessary!M11979L0622 — EN — 01.01.1986 — 002.001 — 23
1. Reference point aF ’=0.95D’.
1.1. The overload test is necessary since aF ’41.03F’.
1.2. Since bF ’5 0.97aF’the overload test must be continued.
1.3. Since cF ’5 0.97bF’the overload test must be continued.
1.4. Since dF ’5 0.97cF’the overload test must be continued.
1.5. The overload test is satisfactory since eF ’40.8Fmax.
NB: If at any time F drops below 0.8Fmax, the structure is rejected.
Figure 4c
Force/deflection curve — overload test to be continued!M11979L0622 — EN — 01.01.1986 — 002.001 — 24
Figure 5
Illustration of the terms permanent, elastic and total deflection!B1979L0622 — EN — 01.01.1986 — 002.001 — 25
Figure 6a
Side view of zone clearance
Figure 6b
Front/rear view of zone of clearance
Figure 6c
Isometric view!B1979L0622 — EN — 01.01.1986 — 002.001 — 26
Figure 7
Apparatus for determination of seat reference point
Figure 8
Method of determining seat reference point!B1979L0622 — EN — 01.01.1986 — 002.001 — 27
ANNEX V
MODEL
REPORT RELATING TO THE EEC COMPONENT TYPE-APPROV AL TEST OF A PROTECTION
STRUCTURE (SAFETY FRAME OR CAB) WITH REGARD TO ITS STRENGTH AS WELL AS TO THE
STRENGTH OF ITS ATTACHMENT TO THE TRACTOR
(Static testing)
!B1979L0622 — EN — 01.01.1986 — 002.001 — 28
!B1979L0622 — EN — 01.01.1986 — 002.001 — 29
!B1979L0622 — EN — 01.01.1986 — 002.001 — 30
!B1979L0622 — EN — 01.01.1986 — 002.001 — 31
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) ornumber of the Member State which has granted the component type-approval:
1 for Germany
2 for France
3 for Italy
4 for the Netherlands
6 for Belgium
9 for Spain
11 for the United Kingdom
13 for Luxembourg
DK for Denmark
GR for Greece
IRL for Ireland
P for Portugal
It must also include in the vicinity of the rectangle the EEC component
type-approval number which corresponds to the number of the EEC componenttype-approval certificate issued with regard to the strength of the type ofprotection structure 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 shown
above is a structure for which EEC component type-approval was granted inGermany (e 1) under the number 1471.!
B
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!B1979L0622 — EN — 01.01.1986 — 002.001 — 32
ANNEX VII
MODEL
EEC COMPONENT TYPE-APPROV AL CERTIFICATE
!B1979L0622 — EN — 01.01.1986 — 002.001 — 33
ANNEX VIII
CONDITIONS FOR EEC TYPE-APPROV AL
1. The application for EEC type-approval of a tractor, with regard to the
strength of a protection structure and the strength of its attachment tothe tractor, shall be submitted by the tractor manufacturer 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 responsible for conductingthe type-approval tests.
3. The technical service responsible for conducting the type-approval tests
shall check whether the approved type of protection structure is intendedto be mounted on the type of tractor for which the type-approval is
requested. In particular, it shall ascertain that the attachment of the
protection structure corresponds to that which was tested when the EECcomponent type-approval was granted.
4. The holder of the EEC type-approval may ask for its 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 tractor for which the
extension of the EEC type-approval is requested;
5.3. the attachment of the protection structure to the tractor corresponds 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 ortype-approval extension which has been granted or refused.
7. If the application for EEC type-approval for a type of tractor is
introduced at the same time as the request for EEC component
type-approval for a type of protection structure intended to be mounted
on the type of tractor for which EEC type-approval is requested, thechecks laid down in 2 and 3 will not be made!
B1979L0622 — EN — 01.01.1986 — 002.001 — 34
ANNEX IX
MODEL
!B1979L0622 — EN — 01.01.1986 — 002.001 — 35