SIST EN ISO 5674:2007
(Main)Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO) drive-shafts - Strength and wear tests and acceptance criteria (ISO 5674:2004, corrected version 2005-07-01)
Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO) drive-shafts - Strength and wear tests and acceptance criteria (ISO 5674:2004, corrected version 2005-07-01)
This International Standard specifies laboratory tests for determining the strength and wear resistance of guards for power take-off (PTO) drive-shafts on tractors and machinery used in agriculture and forestry, and their acceptance criteria. It is intended to be used in combination with ISO 5673. It is applicable to the testing of PTO drive-shaft guards and their restraining means. It is not applicable to the testing of guards designed and constructed to be used as steps.
Traktoren und land- und forstwirtschaftliche Maschinen - Schutzeinrichtungen für Gelenkwellen - Festigkeits- und Verschleißprüfungen und Annahmekriterien (ISO 5674:2004, korrigierte Fassung 2005-07-01)
Diese Internationale Norm beschreibt Laborprüfungen zur Bestimmung von Festigkeit und Verschleiß von Schutzeinrichtungen für Gelenkwellen an Traktoren und Maschinen in der Land- und Forstwirtschaft und deren Annahmekriterien. Die Anwendung in Kombination mit ISO 5673 ist beabsichtigt.
Sie gilt für die Prüfung von Gelenkwellenschutzeinrichtungen und ihren Rückhalteeinrichtungen. Sie gilt nicht für die Prüfung von Schutzeinrichtungen, die zur Benutzung als Stufen gestaltet und ausgelegt sind.
Tracteurs et matériels agricoles et forestiers - Protecteurs d'arbres de transmission a cardans de prise de force - Essais de résistance mécanique et d'usure et criteres d'acceptation (ISO 5674:2004, version corrigée 2005-07-01)
Traktorji ter kmetijski in gozdarski stroji – Ščitniki za priključne gredi – Preskusi trdnosti in obrabe ter merila sprejemljivosti (ISO 5674:2004, popravljena izdaja 2005-07-01)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 5674:2007
01-marec-2007
7UDNWRUMLWHUNPHWLMVNLLQJR]GDUVNLVWURML±âþLWQLNL]DSULNOMXþQHJUHGL±3UHVNXVL
WUGQRVWLLQREUDEHWHUPHULODVSUHMHPOMLYRVWL ,62 SRSUDYOMHQDL]GDMD
Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO)
drive-shafts - Strength and wear tests and acceptance criteria (ISO 5674:2004, corrected
version 2005-07-01)
Traktoren und land- und forstwirtschaftliche Maschinen - Schutzeinrichtungen für
Gelenkwellen - Festigkeits- und Verschleißprüfungen und Annahmekriterien (ISO
5674:2004, korrigierte Fassung 2005-07-01)
Tracteurs et matériels agricoles et forestiers - Protecteurs d'arbres de transmission a
cardans de prise de force - Essais de résistance mécanique et d'usure et criteres
d'acceptation (ISO 5674:2004, version corrigée 2005-07-01)
Ta slovenski standard je istoveten z: EN ISO 5674:2006
ICS:
65.060.01 Kmetijski stroji in oprema na Agricultural machines and
splošno equipment in general
SIST EN ISO 5674:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN ISO 5674
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2006
ICS 65.060.01 Supersedes EN ISO 5674:2004
English Version
Tractors and machinery for agriculture and forestry - Guards for
power take-off (PTO) drive-shafts - Strength and wear tests and
acceptance criteria (ISO 5674:2004, corrected version 2005-07-
01)
Tracteurs et matériels agricoles et forestiers - Protecteurs Traktoren und land- und forstwirtschaftliche Maschinen -
d'arbres de transmission à cardans de prise de force - Schutzeinrichtungen für Gelenkwellen - Festigkeits- und
Essais de résistance mécanique et d'usure et critères Verschleißprüfungen und Annahmekriterien (ISO
d'acceptation (ISO 5674:2004, version corrigée 2005-07- 5674:2004, korrigierte Fassung 2005-07-01)
01)
This European Standard was approved by CEN on 18 September 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5674:2006: E
worldwide for CEN national Members.
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EN ISO 5674:2006 (E)
Foreword
The text of ISO 5674:2004 has been prepared by Technical Committee ISO/TC 23 "Tractors and
machinery for agriculture and forestry” of the International Organization for Standardization (ISO)
and has been taken over as EN ISO 5674:2006 by Technical Committee CEN/TC 144 "Tractors
and machinery for agriculture and forestry", the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by April 2007, and conflicting national
standards shall be withdrawn at the latest by April 2007.
This document supersedes EN ISO 5674:2004.
This document has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EU
Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 5674:2004 has been approved by CEN as EN ISO 5674:2006 without any
modifications.
2
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EN ISO 5674:2006 (E)
ANNEX ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC
This European Standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association to provide a means to conforming to
Essential Requirements of the New Approach Directive 98/37/EC Machinery Directive, amended
by Directive 98/79/EC.
Once this standard is cited in the Official Journal of the European Communities under that
Directive and has been implemented as a national standard in at least one Member State,
compliance with the normative clauses of this standard confers, within the limits of the scope of
this standard, a presumption of conformity with Essential Requirements 1.4.1, 1.4.2.1 first
paragraph, 1.5.11, 1.7.3 first paragraph, 1.3.2, 1.3.7, 3.4.2 and 3.4.7 sixth paragraph of that
Directive and associated EFTA regulations.
Other requirements and other EU Directives may be applicable to the products
WARNING:
falling within the scope of this standard.
3
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INTERNATIONAL ISO
STANDARD 5674
Second edition
2004-03-01
Corrected version
2005-07-01
Tractors and machinery for agriculture
and forestry — Guards for power take-off
(PTO) drive-shafts — Strength and wear
tests and acceptance criteria
Tracteurs et matériels agricoles et forestiers — Protecteurs d'arbres de
transmission à cardans de prise de force — Essais de résistance
mécanique et d'usure et critères d'acceptation
Reference number
ISO 5674:2004(E)
©
ISO 2004
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ISO 5674:2004(E)
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ii © ISO 2004 – All rights reserved
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ISO 5674:2004(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 General test conditions.2
4.1 Guard.2
4.2 Other.2
5 Test equipment.2
5.1 General.2
5.2 Test parameters.2
6 Tests.4
6.1 General.4
6.2 Wear test.4
6.3 Bearing corrosion test (Perform only if the guard has bearings running in contact with the
PTO-shaft) .4
6.4 Strength tests.5
6.5 Tests at sub-zero temperature .8
6.6 Restraining means test at ambient temperature .10
7 Final acceptance criteria.11
8 Test report.12
Annex A (normative) Test schedule .13
Annex B (normative) UV test for plastic guards .16
Annex C (informative) Typical test report.17
Annex D (informative) Novel design guard and restraining systems tests.20
© ISO 2004 – All rights reserved iii
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ISO 5674:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 5674 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and
forestry, Subcommittee SC 2, Common tests.
This second edition of ISO 5674 cancels and replaces the first editions of ISO 5674-1:1992 and
ISO 5674-2:1992, of which it constitutes a technical revision.
This corrected version of ISO 5674:2004 incorporates the following corrections or modifications.
An error in the second column heading of Table 2 (“m/m”) has been eliminated.
Figure 1 has been modified, and numbering of elements and a key added.
The wording of the third sentence of 6.5.2 has been changed.
The title of 6.6 has been corrected from “specified temperature” to “ambient temperature”.
The system of numbering and the wording of A.1 has been altered to avoid possible confusion.
Figure A.1 has been changed to show the blows at three locations, and “h” has been deleted from the
drawing and the legend as a result of the change to 6.5.2.
Cross-references have been added to the legend to Figure D.1.
The system of numbering and the wording of D.9 has been altered to avoid possible confusion.
iv © ISO 2004 – All rights reserved
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ISO 5674:2004(E)
Introduction
This document is a type C standard as stated in ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
indicated in the scope of this standard.
When provisions of this type C standard are different from those which are stated in type A or B standards, the
provisions of this type C standard take precedence over the provisions of the other standards, for machines
that have been designed and built according to the provisions of this type C standard.
© ISO 2004 – All rights reserved v
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INTERNATIONAL STANDARD ISO 5674:2004(E)
Tractors and machinery for agriculture and forestry — Guards
for power take-off (PTO) drive-shafts — Strength and wear tests
and acceptance criteria
1 Scope
This International Standard specifies laboratory tests for determining the strength and wear resistance of
guards for power take-off (PTO) drive-shafts on tractors and machinery used in agriculture and forestry, and
their acceptance criteria. It is intended to be used in combination with ISO 5673.
It is applicable to the testing of PTO drive-shaft guards and their restraining means. It is not applicable to the
testing of guards designed and constructed to be used as steps.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 105-A02, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour
ISO 500 (all parts), Agricultural tractors — Rear-mounted power take-off types 1, 2 and 3
ISO 4892-1, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance
ISO 4892-2, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc sources
ISO 5673-1, Agricultural tractors and machinery — Power take-off drive shafts and power-input connection —
Part 1: General, manufacturing and safety requirements
ISO 5673-2, Agricultural tractors and machinery — Power take-off drive shafts and power-input connection —
Part 2: Specification for use of PTO drive shafts, and position and clearance of PTO drive line and PIC for
various attachments
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5673-1 and the following apply.
3.1
ambient temperature
any temperature between 5 °C and 35 °C
© ISO 2004 – All rights reserved 1
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ISO 5674:2004(E)
4 General test conditions
4.1 Guard
4.1.1 The guard shall be representative of a production model and be within the tolerances specified for the
guard. The results obtained from the sample can be used to certify guards of shorter or longer lengths,
provided the basic design remains the same. When a guard is designed for use with several drive-shaft types,
a representative selection of shaft and guard combinations shall be tested.
4.1.2 If the guard is made of plastic material (or any other material susceptible to degradation by UV
radiation), it shall be certified by the manufacturer to be resistant to degradation from UV radiation under an
appropriate, recognized method. See Annex B for an example.
4.1.3 During testing, all operating and maintenance instructions specified for the shaft and guard shall be
complied with, except where specifically mentioned by this International Standard.
4.1.4 The guard shall be tested in conjunction with a PTO drive-shaft of between 900 mm and 1 010 mm
closed length for which it is intended. The same guard shall be used throughout all the tests.
4.2 Other
4.2.1 Where specified in this International Standard that the PTO drive-shaft shall be revolving, its rotational
frequency shall be 1 000 r/min.
4.2.2 All tests shall be carried out in accordance with the schedule and in the sequence given in Annex A.
5 Test equipment
5.1 General
5.1.1 Wear test equipment, which shall be capable of holding the PTO drive-shaft and revolving it at a
frequency of 1 000 r/min.
The shafts and guards shall be mounted as specified for operational use and only fixed by their designated
restraining device. The fixing points shall be in accordance with ISO 500 and the equivalent machine standard
unless otherwise specified for that type of shaft. The size and shape of the wear test equipment shall be such
that an even test environment is maintained, e.g. heat and the dust specified in 5.2.3.
5.1.2 Strength test equipment, which shall allow the accurate application of known loads at controlled
temperatures and at the required frequency of rotation within the tolerances stipulated in Table 1.
5.2 Test parameters
5.2.1 Measuring accuracy
All measurements shall be within the tolerances given in Table 1 except where otherwise required by this
International Standard.
2 © ISO 2004 – All rights reserved
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ISO 5674:2004(E)
Table 1 — Measuring accuracy
Measuring accuracy Test tolerance
Rotational speed ± 0,5 % + 5 %
Temperature ± 1,0 °C ± 5 %
Time ± 0,2 % + 5 %
Length ± 0,5 % ± 2 %
Force ± 1,0 % + 2 %
5.2.2 Potable and salt water
5.2.2.1 When a test requires the use of water, it shall be potable (i.e. drinking water).
5.2.2.2 When a test requires a saltwater solution, it shall be prepared by dissolving sodium chloride in
water to produce a concentration of 50 g/l ± 5 g/l. The sodium chloride shall be white and shall give a
colourless solution in water. It shall be substantially free from copper and nickel, and shall not contain more
than 0,1 % of sodium iodine and not more than 0,4 % of total impurities calculated for dry salt.
5.2.3 Test dust
5.2.3.1 The test dust shall consist of a mixture composed of equal parts, by mass, of organic and mineral
dust.
5.2.3.2 The organic dust shall be ground lucerne with a maximum percentage of 12 % water and with a
3
maximum particle size of 2 mm. An environment of 0,5 kg/m shall be maintained.
5.2.3.3 The mineral dust shall be a simple phosphated fertilizer, and shall contain as principal elements
silicophosphates of calcium having the following characteristics:
minimum content: 9 % of P O total (± 3 %);
2 5
other: at least 75 % of the P O total declared, soluble in a 2 % concentration of citric acid.
2 5
See Table 2.
Table 2 — Mineral dust specification
Mesh opening of sieve Fineness of grinding, after sifting
mm min. %
> 0,063 —
> 0,125 —
> 0,16 75
> 0,63 96
© ISO 2004 – All rights reserved 3
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ISO 5674:2004(E)
6 Tests
6.1 General
After each test, note and record the condition of the guard, with particular reference to any fractures,
permanent deformation or detachment of components which could contribute to the deterioration of the guard.
For the test sequence, see Annex A.
The PTO drive-shaft guard is deemed to have passed the test if
the guard has no holes or deformation which leave the shaft unprotected, and
the guard has no breakage, crack or part separation.
6.2 Wear test
6.2.1 For the whole test, the shaft shall be revolving and, whilst revolving, shall be repeatedly extended to
its extended length (see ISO 5673-1), held for 1 min, then returned and held at its closed length (see
ISO 5673-1) for 4 min. This shall be repeated for the duration of the test period. See Annex A for the test
sequence.
Guards shall only be fixed using the normal fixing and restraining system as specified by the manufacturer.
Before the start and at the end of each of the wear test cycles, measure the torque required for the
immobilization of any part of the guard, having first run the guard for 1 min. The torque measured shall not
exceed 2,5 N ⋅ m per bearing race up to a maximum of 10 N ⋅ m per complete driveline.
6.2.2 At the start and at the end of the wear test, measure the running torque that needs to be applied to
each guard tube in order to immobilize it when the shaft is revolving at 1 000 r/min.
6.2.3 Carry out the following procedure, in the sequence given.
a) For 48 h, operate at 85 °C.
b) For 48 h, operate at ambient temperature.
3
c) For 96 h, operate at ambient temperature in an atmosphere containing 0,5 kg/m of dust according to
5.2.3.
d) For 24 h, operate at 85 °C.
e) For 24 h, operate at ambient temperature.
3
f) For 48 h, operate at ambient temperature in an atmosphere containing 0,5 kg/m of dust according to
5.2.3.
6.3 Bearing corrosion test (Perform only if the guard has bearings running in contact with the
PTO-shaft)
Taking the shaft with the bearing in place, but with the rest of the guard removed, and supported horizontally
and stationary, apply salt water (see 5.2.2.2) to all bearings for the first 5 min of every hour for 48 h, then
leave to dry in free air (i.e. 48 cycles consisting of salt water application for 5 min of each cycle and drying in
free air for the other 55 min of each cycle).
4 © ISO 2004 – All rights reserved
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ISO 5674:2004(E)
The salt water may be applied by spraying, flooding or any other suitable method, provided that it at least
flows over all the metallic parts of the bearing system at some stage during the 5 min. It might be necessary to
rotate the shaft during the process to ensure good coverage, but this should only be done very slowly so as
not to throw the liquid off. The application of the salt water shall be carried out such that salt solution corrosion
of its inner tubes is avoided.
6.4 Strength tests
6.4.1 Dynamic radial loading test at defined temperature limits
Subject the guarded drive-shaft to a radial loading test at ambient temperature after each complete cycle of
the wear test (See A.1 and D.9).
The PTO drive-shaft guard is deemed to have passed the test if
the guard has no holes or deformation which leave the shaft unprotected, and
the guard has no breakage, crack or part separation.
6.4.2 Test on guard component covering joints
Revolve the PTO drive-shaft and, using a smooth, flat, 100 mm wide wooden beam, apply a direct force of
500 N to the cone of the universal joint for 60 s, in accordance with Annex A, perpendicular to the PTO
drive-shaft.
To avoid excessive vibration, the wooden beam shall be supported by a 20 mm thick rubber backing of
approximately A 20 Shore hardness. When applying the load, care shall be taken to ensure that no impact
load is applied.
Test over every joint.
The PTO drive-shaft guard is deemed to have passed the test if
the guard has no holes or deformation which leave the shaft unprotected, and
the guard has no breakage, crack or part separation.
6.4.3 Test on tubes
Support the guarded PTO drive-shaft in a horizontal, straight line by its usual end connections, at its extended
length (as specified by the manufacturer).
Revolve the PTO drive-shaft and, using a smooth, flat, 100 mm wide wooden beam, apply a direct load of
500 N for 60 s at right angles to the shaft guard at its midpoint, in accordance with Annex A.
Record whether any part of the revolving shaft was exposed during or after the test that would allow a 30 mm
probe to come into contact with that revolving part.
The PTO drive-shaft guard is deemed to have passed the test if
the guard has no holes or deformation which leave the shaft unprotected, and
the guard has no breakage, crack or part separation.
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ISO 5674:2004(E)
6.4.4 Dynamic swivel test
The dimensions of the cone guarding the universal joints shall be such that the cone will not be damaged by
contact with the master shield (see ISO 500), when the drive-shaft and guard are at the maximum allowable
angle and while the shaft is rotating as specified by the manufacturer in the instruction handbook.
If the guard cone does not come into contact with the master shield or any part of the drive-shaft when the
drive-shaft is at the specified maximum rotating angular position, this test need not be carried out.
To verify this requirement, perform the following procedure, with the PTO drive-shaft revolving at 1 000 r/min.
a) Test the drive-shafts with a nominal torque rating of < 1 000 N ⋅ m or a nominal transmitted power < 57 kW
at 540 r/min with the test master shield for PTOs of types 1 and 2.
b) Test the drive-shafts with a higher nominal torque rating or nominal transmitted power with the test
master shield for PTOs of Type 3.
Couple the PTO drive-shaft to a fixture with the test master shield integrated as shown in Figure 1. Use the
dimensions given in Table 3 and the nominal torque as specified.
Move the drive-shaft and guard repeatedly from the in-line position in a horizontal plane out to the maximum
operational angle specified by the manufacturer for the universal joint and back. Include in this cyclic
movement a dwell period of 5 s ± 2 s at the maximum angle position. Complete 100 cycles within
15 min ± 3 min.
The PTO drive-shaft guard is deemed to have passed the test if
the guard has no holes or deformation which leave the shaft unprotected, and
the guard has no breakage, crack or part separation.
6.4.5 Static axial loading test at ambient temperature
With the PTO drive-shaft and guard stationary, gradually apply an axial force of 250 N between each cone
and tube in both directions, holding the force for a minimum of 60 s. See Annex A.
With the PTO drive-shaft and guard stationary, apply an axial force of 1 000 N between the guard tube and
the PTO drive-shaft at every attachment bearing in both directions, holding the force for a minimum of 60 s.
See Annex A.
Test each end.
The PTO drive-shaft guard is deemed to have passed the test if
the guard has no holes or deformation which leave the shaft unprotected, and
the guard has no breakage, crack or part separation.
6.4.6 Dynamic axial loading test of the bearings at ambient temperature
With the PTO drive-shaft revolving and the guard stationary in the test equipment, apply an axial force of
500 N in both directions between the guard and the PTO drive-shaft bearings for 60 s. See Annex A.
The PTO drive-shaft guard is deemed to have passed the test if
the guard has no holes or deformation which leave the shaft unprotected, and
the guard has no breakage, crack or part separation.
6 © ISO 2004 – All rights reserved
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ISO 5674:2004(E)
Dimensions in millimetres
Key
1 test fixture
2 universal joint
3 wide-angle universal joint
4 maximum operational angle
Figure 1 — Test master shield and fixture for PTO types 1, 2 and 3
© ISO 2004 – All rights reserved 7
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ISO 5674:2004(E)
Table 3 — Dimensions of fixture
Dimensions in millimetres
Dimension
PTO type
n P
+ 2 + 2
1 and 2 85 280
0 0
+ 2 + 2
3 105 350
0 0
6.5 Tests at sub-zero
...
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