1、BRITISH STANDARDBS EN 1374:2000+A1:2010Incorporating CorrigendumJuly 2004Agricultural machinery Silos stationary unloaders for round silos SafetyICS 65.040.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g5
2、5g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58National forewordThis British Standard is the UK implementation of EN 1374:2000+A1:2010, incorporating corrigendum July 2004. It supersedes BS EN 1374:2000 which is withdrawn.The start and finish of text introduced or altered by amendment is
3、indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text alteredby CEN amendment A1 is indicated by !“.The UK participation in its preparation was entrusted to Technical Committee AGE/6, Agricultural tractors and forestry machinery.A
4、 list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from l
5、egal obligations.BS EN 1374:2000+A1:2010This British Standard, havingbeen prepared under thedirection of the EngineeringSector Committee, was published under the authority of the Standards Committee and comes into effect on 15 August 2000 BSI 2010Amendments/corrigenda issued since publicationAmd. No
6、. Date Comments 15331 Corrigendum No.116 August 2004 Changes to Figure B.331 May 2010 Implementation of CEN amendment A1:2010ISBN 978 0 580 62362 2EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1374:2000+A1 April 2010 ICS 65.040.20 Supersedes EN 1374:2000English Version Agricultural machinery
7、- Silos stationary unloaders for round silos - Safety Matriel agricole - Dsileuses stationnaires pour silos cylindriques - Scurit Landmaschinen - Stationre Entnahmegerte fr Rundsilos - Sicherheit This European Standard was approved by CEN on 9 April 2000 and includes Corrigendum 1 issued by CEN on 2
8、1 July 2004 and Amendment 1 approved by CEN on 21 February 2010. 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 r
9、eferences 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 mem
10、ber 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irelan
11、d, Italy, 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,
12、 B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1374:2000+A1:2010: EEN 1374:2000+A1:2010 (E) 2 Contents Page Foreword 3Introduction . 41 Scope 42 Normative references 43 Terms and definitions . 54 Mechanical s
13、afety requirements 64.1 General 64.2 Protection against hazards generated by silage cutting tools and drive rollers 64.3 Manual operating device . 104.4 Location of manual controls . 104.5 Guarding of drives . 104.6 Control systems . 105 Electrical safety requirements 125.1 General requirements 125.
14、2 Special requirements 126 Information for use 126.1 Instruction handbook 126.2 Marking . 136.3 Warnings . 13Annex A (normative) List of hazards 14Annex B (informative) Top-unloaders Examples for design . 20Annex ZA (informative) !Relationship between this European Standard and the Essential Require
15、ments of EU Directive 98/37/EC“ . 23Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“ . 24BS EN 1374:2000+A1:2010EN 1374:2000+A1:2010 (E) 3 Foreword This document (EN 1374:2000+A1:2010) has been prepared by Technical Commit
16、tee 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 October 2010, and conflicting natio
17、nal standards shall be withdrawn at the latest by October 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document includes
18、 Corrigendum 1 issued by CEN on 2004-07-21 and Amendment 1, approved by CEN on 2010-02-21. This European Standard supersedes EN 1374:2000. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. The modifications of the related CEN Corrigendum have been
19、implemented at the appropriate places in the text and are indicated by the tags . This European Standard 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 E
20、U Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.“ Annex A is normative and contains the “List of hazards“. Annex B is informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound
21、 to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, 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, Sw
22、eden, Switzerland and United Kingdom. BS EN 1374:2000+A1:2010EN 1374:2000+A1:2010 (E) 4 Introduction !This document is a type C standard as stated in EN ISO 12100. The machinery concerned and the extent to which hazards, hazardous situations and hazardous events are covered are indicated in the scop
23、e 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 provisions of the other standards, for machines that have been designed and built according to the provision
24、s of this type C standard.“ Silo unloaders shall comply as appropriate with !EN ISO 12100“ for hazards which are not covered by this standard. 1 Scope This European Standard specifies safety requirements for the design and construction of unloaders mounted in stationary round silos for the removal o
25、f the silage and similar materials. It applies to electrically powered, slowly rotating unloaders which operate on top surface of the stored silage surface. It describes methods for the elimination or reduction of hazards for which specific requirements on unloaders, as defined in 3 and shown in Ann
26、ex B, are necessary. In addition, it specifies the type of information to be provided by the manufacturer on safe working practices. The !document“ only deals with the hazards generated by the silo unloader and not with those of the silo system itself (e.g. hazards arising from generated gases). !Th
27、is document is not applicable to noise and fire hazards and hazards related to the foreseeable misuse.“ The !document“ does not deal with technical requirements for installation or removal of the unloader from one silo to another. The list of significant hazards dealt with in this !document“ is give
28、n in annex A. Annex A also indicates the hazards which have not been dealt with. The environmental aspects have not been considered in this !document“. This !document“ applies primarily to machines which are manufactured after the date of issue of this !document“. NOTE Directive 94/9/EC concerning e
29、quipment and protective systems intended for use in potentially explosive atmospheres can be applicable to the type of machine or equipment covered by this European Standard. The present !document“ is not intended to provide means of complying with the essential health and safety requirements of Dir
30、ective 94/9/EC. 2 Normative references !The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.“
31、 !EN 954-1:1996, Safety of machinery Safety-related parts of control systems Part 1: General principles for design EN 1088:1995, Safety of machinery Interlocking devices associated with guards Principles for design and selection BS EN 1374:2000+A1:2010EN 1374:2000+A1:2010 (E) 5 EN 60204-1:2006, Safe
32、ty of machinery Electrical equipment of machines Part 1: General requirements (IEC 60204-1:2005, modified) EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN 60947-4-1:2001, Low-voltage switchgear and control gear Part 4-1: Contactors and motor-starters Electro
33、mechanical contactors and motor-starters (IEC 60947-4-1:2000) EN 60947-5-1:2004, Low-voltage switchgear and control gear Part 5-1: Control circuit devices and switching elements Electromechanical control circuit devices (IEC 60947-5-1:2003) EN ISO 4254-1:2009, Agricultural machinery Safety Part 1: G
34、eneral requirements (ISO 4254-1:2008) EN ISO 12100-1:2003, Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery Basic concepts, general principles for design Part 2: Technical principles (
35、ISO 12100-2:2003) EN ISO 13850:2008, Safety of machinery Emergency stop Principles for design (ISO 13850:2006) EN ISO 13857:2008, Safety of machinery Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008) HD 22.4 S4:2004, Cables of rated voltages up to and i
36、ncluding 450/750 V and having crosslinked insulation Part 4: Cords and flexible cables HD 60364-7-705:2007, Low-voltage electrical installations Part 7-705: Requirements for special installations or locations Agricultural and horticultural premises (IEC 60364-7-705:2006, modified)“ 3 Terms and defin
37、itions !For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the following apply.“ 3.1 silo unloader machine for unloading silage from inside of a stationary silo of essentially circular cross-section. It is set upon the surface of the silage, whereby the sil
38、age cutting tools rotate around a vertical axis during extraction of the silage e.g. by chain or screw conveyors. The cut silage is removed from the silo by a blower. The rotational rate is max. 5/ s (See Annex B for examples of such machines). NOTE The cut silage is handled simultaneously out of th
39、e silo. Silo unloaders can also be used to distribute the silage during filling the silo. 3.2 cutting arm part of the unloader carrying the silage cutting tools 3.3 drive roller powered roller which drives on the silage top surface making the cutting arm rotate around the vertical axis of the silo 3
40、.4 silage cutting tool cutting tool attached to a chain or a screw conveyor for cutting and extracting the silage BS EN 1374:2000+A1:2010EN 1374:2000+A1:2010 (E) 6 3.5 slipring connection device for continuously maintaining electrical connections between the moving cutting arm and the non-rotating p
41、art of the silo unloader 4 Mechanical safety requirements 4.1 General !The machine shall be designed according to the principles of risk reduction specified in EN ISO 12100-1:2003, Clause 5. Unless otherwise specified in this document, safety distances shall comply with the requirements given in EN
42、ISO 13857:2008, Tables 1, 3, 4 or 6.“ !deleted text“ 4.2 Protection against hazards generated by silage cutting tools and drive rollers The total overall length of the silage cutting tools forming the cutting arm shall be guarded at the front, at the back and from above (see Figure 1a). The vertical
43、 distance between the lower edge of the front and back guards and the lower edge of the silage cutting tools shall be a maximum of 125 mm, and the horizontal distance between the periphery of the silage cutting tools and the front and back guards shall be a minimum of 200 mm. The guard shall be radi
44、ally adjustable so that a gap of no more than 60 mm is left between the end of the guard and to the surface of the inner wall of the silo (see Figure B.1). !In addition, at the rear of the cutting arm a deterring/impeding device (see 3.27 in EN ISO 12100-1:2003) shall be located at a maximum height
45、of 400 mm above the silage top surface, and a horizontal distance of not less than 300 mm from the periphery of the silage cutting tools.“ The guard at the rear of the unloader may be modified to include a hinged flap that rests on the cut surface of the silage (see Figure 1 b). !A trip device, exte
46、nding the full width of the cutting arm shall be located in front (relative to the normal direction of working) of each cutting arm and drive roller to prevent overrunning of persons. Rotation shall stop within 1 after activation of the trip device.“ This device shall be mounted at a maximum height
47、of 200 mm above the lower edge of the silage cutting tools and at a horizontal distance of between 300 mm and 500 mm in front of the leading edge of the silage cutting tools and drive roller. The trip device on the drive roller shall be located in accordance with Figure 2. !Guards and trip devices s
48、hall withstand horizontal forces of 600 N and vertical forces of 900 N. The test method shall be in accordance with Annex C of EN ISO 4254-1:2009.“ BS EN 1374:2000+A1:2010EN 1374:2000+A1:2010 (E) 7 Dimensions in millimetres Key 1 Working direction 5 Back guard 2 Trip device 6 Deterring/Impeding devi
49、ce 3 Front guard 7 Cutting tool 4 Guard, topside 8 Silage Figure 1 a Protection of silage cutting tools with deterring device BS EN 1374:2000+A1:2010EN 1374:2000+A1:2010 (E) 8 Dimensions in millimetres Key 1 Working direction 6 Deterring/Impeding device 2 Trip device 7 Cutting tool 3 Front guard 8 Silage 4 Guard, topside 9 Flap 5 Back guard Figure 1 b Protection of silage cutting tools with hinged flap If the non-rotating part of the un
