1、December 2009DEUTSCHE NORM English price group 12No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 65.060.01!$=P“1562645
2、www.din.deDDIN EN 12965Tractors and machinery for agriculture and forestry Power take-off (PTO) drive shafts and their guards Safety (includes Amendment A2:2009)English version of DIN EN 12965:2009-12Traktoren und Maschinen fr die Land- und Forstwirtschaft Gelenkwellen und ihre Schutzeinrichtungen S
3、icherheit (enthlt nderung A2:2009)Englische Fassung DIN EN 12965:2009-12SupersedesDIN EN 12965:2005-03See start of validitywww.beuth.deDocument comprises 25 pagesDIN EN 12965:2009-12 Start of validity This standard takes effect on 1 December 2009. DIN EN 12965:2005-03 may be used in parallel until 2
4、8 December 2009. National foreword This standard includes safety requirements. This standard has been prepared by Technical Committee CEN/TC 144 “Tractors and machinery for agriculture and forestry” (Secretariat: AFNOR, France), Working Group WG 1 “General safety requirements”. The responsible Germa
5、n body involved in its preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee), Technical Committee NA 060-16-30 AA Landtechnik. Amendment of the European Machinery Directive has made it necessary to review the previously valid standard, EN 12965:2003, in terms
6、of the essential requirements of the new European Machinery Directive, 2006/42/EC. This standard contains specifications meeting the essential requirements set out in Annex I of the “Machinery Directive”, Directive 98/37/EC, (valid until 28 December 2009) and the “revised Machinery Directive”, Direc
7、tive 2006/42/EC, which takes effect on 29 December 2009, and which apply to power take-off (PTO) drive shafts that are either first placed on the market or commissioned within the EEA. This standard serves to facilitate proof of compliance with the essential requirements of the directives. Once this
8、 standard is cited in the Official Journal of the European Union, it is deemed a “harmonized” standard and thus, a manufacturer applying this standard may assume compliance with the requirements of the Machinery Directive (“presumption of conformity”). The European Standards referred to in this docu
9、ment have been published as the corresponding DIN EN Standards with the same number. For the International Standards referred to there are no national standards available. ISO 5673, Agricultural tractors and machinery Power take-off drive shafts and power-input connection has been divided into two p
10、arts: Part 1, General manufacturing and safety requirements and Part 2, Specification for use of PTO drive shafts, and position and clearance of PTO drive line and PIC for various attachments. Amendments This standard differs from DIN EN 12965:2005-03 as follows: a) Annex ZA (informative) “Relations
11、hip between this European Standard and the Essential Requirements of EU Directive 98/37/EC” has been updated. b) Annex ZB (informative) “Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC” has been included. Previous editions DIN EN 12965: 2004-05,
12、2005-03 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12965:2003+A2 July 2009 ICS 65.060.01 Supersedes EN 12965:2003English Version Tractors and machinery for agriculture and forestry - Power take-off (PTO) drive shafts and their guards - Safety Tracteurs et matriels agricoles et forestiers
13、 - Arbres de transmission cardans de prise de force et leurs protecteurs - Scurit Traktoren und Maschinen fr die Land- und Forstwirtschaft - Gelenkwellen und ihre Schutzeinrichtungen - Sicherheit This European Standard was approved by CEN on 13 February 2003 and includes Amendment 1 approved by CEN
14、on 28 October 2004 and Amendment 2 approved by CEN on 30 May 2009. 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
15、 references concerning such national standards may be obtained on application to the CEN Management Centre 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 m
16、ember into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Ital
17、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000
18、 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12965:2003+A2:2009: EEN 12965:2003+A2:2009 (E) 2 Contents Page Foreword 30 Introduction 41 Scope 42 Normative references 43 Terms and definitions . 54 Requirements and/
19、or safety measures . 84.1 General requirements 84.2 Universal joint 84.3 Wide-angle universal joint 94.4 Guard 114.5 Intervention points. 114.6 Restraining system 125 Verification of safety requirements and/or measures 125.1 General 125.2 Test for cone guarding the universal joints 126 Information f
20、or use 146.1 Instruction handbook 146.2 Marking and warning . 16Annex A (normative) List of hazards . 17Annex ZA (informative) #Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC, amended by Directive 98/79/EC$ . 21Annex ZB (informative) #Relationship
21、 between this European Standard and the Essential Requirements of EU Directive 2006/42/EC$ . 22Bibliography 23DIN EN 12965:2009-12 EN 12965:2003+A2:2009 (E) 3 Foreword This document (EN 12965:2003+A2:2009) has been prepared by Technical Committee CEN /TC 144, “Tractors and machinery for agriculture
22、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 January 2010, and conflicting national standards shall be withdrawn at the latest by Janua
23、ry 2010. This document includes Amendment 1, approved by CEN on 2004-10-28 and Amendment 2, approved by CEN on 2009-05-30. This document supersedes EN 12965:2003. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“ and # $. This document has been prepa
24、red under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). #For relationship with EC Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.$ EN 1152:1994 “Tractors a
25、nd machinery for agriculture and forestry Guards for power take-off (PTO) drive shafts Wear and strength tests“ complements this European Standard which gives definitions and requirements concerning PTO drive shafts and their guards. Annex A is normative. This document includes a Bibliography. Accor
26、ding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvi
27、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 12965:2009-12 EN 12965:2003+A2:2009 (E) 4 0 Introduction This European Standard is a type C standard as defined in EN 1070. The machinery concern
28、ed and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this document. 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 pro
29、visions of the other standards, for machines that have been designed and built according to the provisions of this type C standard. The hazards that are common to agricultural machines (self-propelled, mounted, semi-mounted and trailed) are dealt with in EN 1553. 1 Scope This standard specifies safe
30、ty requirements and their verification for the design and construction of power take-off (PTO) drive shafts and their guards linking self-propelled machinery (or tractor) to the first fixed bearing of recipient machinery, by describing methods for the elimination or reduction of risks which need spe
31、cific requirements. This standard concerns only the PTO drive shafts and those guards which are mechanically linked to the PTO drive shaft by at least two bearings. In addition, it specifies the type of information on safe working practices to be provided by the manufacturer. This standard does not
32、deal with: the guards totally covering, but not mechanically linked to, the PTO drive shaft. As these devices are not at present widely established on the market, they should be dealt with in a future revision of this standard; the mechanical characteristics of PTO drive shafts, overrun devices and
33、torque limiters; general hazards which are dealt with in EN 1553 (see introduction). Environmental aspects have not been considered in this standard. This document is not applicable to PTO drive shafts and their guards which are manufactured before the date of publication of this document by CEN. 2
34、Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisio
35、ns of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 292-1:1991, Safety of machinery Basic concepts, general principles for de
36、sign Part 1: Basic terminology, methodology. EN 292-2:1991, Safety of machinery Basic concepts, general principles for design Part 2: Technical principles and specifications (including amendment A1:1995). EN 294:1992, Safety of machinery Safety distance to prevent danger zones being reached by the u
37、pper limbs. EN 1070: 1998, Safety of machinery Terminology. DIN EN 12965:2009-12 EN 12965:2003+A2:2009 (E) 5 EN 1152, Tractors and machinery for agriculture and forestry Guards for power take-off (PTO) drive shafts Wear and strength tests. ISO 5673:1993, Agricultural tractors and machinery Power tak
38、e-off drive shafts and position of power-input connection. ISO 11684:1995, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment Safety signs and hazard pictorials General principles. 3 Terms and definitions For the purposes of this European Standard, the terms and defi
39、nitions given in EN 1070:1998 and ISO 5673:1993 and the following apply. 3.1 restraining system part of the PTO drive shaft guard which prevents rotation of the guard when the PTO drive shaft rotates NOTE See Figure 1a 14 - only shown as an example. 3.2 wide-angle universal joint constant-velocity j
40、oint allowing operation with an articulation generally higher than 50 NOTE See Figure 1b 9 - only shown as an example. 3.3 overrun device device that permits the transmission of motion only in one direction (from the tractor towards the recipient machinery). See Figure 2 NOTE It is normally used wit
41、h recipient machine having high value inertia. 3.4 torque limiter device that cuts or limits the transmission of motion between tractor and recipient machinery, when the torque reaches a prefixed value. See Figure 3 DIN EN 12965:2009-12 EN 12965:2003+A2:2009 (E) 6 Figure 1a Figure 1b Key 1 Power tak
42、e-off (PTO) 10 Guard cone 2 Power-input connection (PIC) 11 Guard tube 3 PTO yoke 12 Guard bearing 4 PIC yoke 13 Separate guard of wide angle universal joint 5 End of inner yoke of universal joint 14 Restraining system 6 Universal joint 15 PTO drive shaft guard 7 Double yoke 16 PTO wide-angle drive
43、shaft guard 8 End of double yoke of outer joint 9 Wide-angle universal joint Figure 1 Parts of drive shaft and guard DIN EN 12965:2009-12 EN 12965:2003+A2:2009 (E) 7 Key 1 PIC 2 Overrun device Figure 2 Example of overrun device Key 1 PIC 2 Torque limiter Figure 3 Example of torque limiter DIN EN 129
44、65:2009-12 EN 12965:2003+A2:2009 (E) 8 4 Requirements and/or safety measures 4.1 General requirements The PTO drive shafts and their guards shall comply with the safety requirements and/or protective measures of this clause. In addition, the machine shall be designed according to the principles of E
45、N 292 for hazards relevant but not significant, which are not dealt with by this standard (e.g. thermal hazards). The list of significant hazards dealt with in this standard is given in annex A. Annex A also indicates the hazards which have not been dealt with. The manufacturer shall provide data in
46、 the instruction handbook (see 6.1) defining the limiting use that can be made of the drive shaft and its guards. This shall include operating data and warnings against misuse (see 6.2). The guard shall be designed to prevent contact with the moving components of the drive shaft whilst the drive sha
47、ft being operated in accordance with the instruction handbook and whilst the drive shaft being connected in the appropriate way between a tractor or self-propelled machine and a recipient machine. The outside parts of the guard shall not turn with the transmission shaft. The guard shall comply with
48、acceptance criteria of EN 1152. The locking system of the PTO yoke (see Figure 1a and Figure 1b) shall have no point which can cause entanglement (e.g. by collar design). If there is a torque limiter and/or an overrun device on the drive shaft it shall be positioned only on the PIC side of the drive
49、 shaft as shown in Figures 2 and 3. Relevant marking shall be provided. Unless otherwise specified in this standard, all the apertures and safety distances shall comply with the requirements of Tables 1, 3, 4 and 6 of EN 294:1992. Warnings shall be provided on the guards specifying the necessity to read the instruction handbook. 4.2 Universal joint The guard shall cover the drive shaft at least up to the end of the inner yoke of the universal joint
