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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 704:1999 The Europe
2、an Standard EN 704:1999 has the status of a British Standard ICS 65.060.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Agricultural machinery Pick-up balers Safety This British Standard, having been prepared under the direction of the Engineering Sector Committee, was publ
3、ished under the authority of the Standards Committee and comes into effect on 15 August 1999 BSI 08-1999 ISBN 0 580 32387 0 BS EN 704:1999 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the English language version of EN 704:1999. The UK participa
4、tion in its preparation was entrusted to Technical Committee AGE/23, Equipment for harvesting and conservation, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep
5、the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European public
6、ations referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provision
7、s of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and
8、 a back cover. The BSI copyright notice displayed throughout this document indicates when the document was last issued. CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN Al
9、l rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 704:1999 E EUROPEAN STANDARDEN 704 NORME EUROPE ENNE EUROPA ISCHE NORM March 1999 ICS 65.060.50 English version Agricultural machinery Pick-up balers Safety Mate riel agricole Ramasseuses-p
10、resses Se curite Landmaschinen Sammelpressen Sicherheit This European Standard was approved by CEN on 20 Februrary 1999. 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 withou
11、t 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 mad
12、e 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,
13、 Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Page 2 EN 704:1999 BSI 08-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 144, Tractors and machinery for agriculture and forestry, the Secretariat of which
14、 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 September 1999, and conflicting national standards shall be withdrawn at the latest by September 1999. This European Standard has
15、 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 standard. Annex A is normative an
16、d contains the List of hazards. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxe
17、mbourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 0Introduction3 1Scope3 2Normative references3 3Safety requirements and/or measures3 3.1General3 3.2Requirements for all types of balers3 3.3Requirements for rectangular balers6 3.4Requir
18、ements for round balers9 4Verification of safety requirements and/or measures9 5Information for use9 5.1Instruction Handbook9 5.2Marking10 Annex A (normative) List of hazards10 Annex ZA (informative) Clauses of this European standard addressing essential requirements or other provisions of EU Direct
19、ives15 Page 3 EN 704:1999 BSI 08-1999 0 Introduction The extent to which hazards are covered is indicated in the scope of this standard. These hazards are specific to pick-up balers. The hazards that are common to all the agricultural machines (self-propelled, mounted, semi-mounted and trailed) will
20、 be dealt with in a standard currently in preparation (prEN 1553). 1 Scope This standard specifies safety requirements and their verification for design and construction of self-propelled and trailed pick-up balers independent of the shape or size of the bales formed. It describes methods for the el
21、imination or reduction of risks which need specific requirements for pick-up balers. It does not deal with hazards which are common to all agricultural machines, particularly common hazards related to mobility, including those specific to self-propelled machines. These aspects will be dealt with in
22、another standard produced by CEN/TC 144 (see introduction). In addition, it specifies the type of information on safe working practices to be provided by the manufacturer. The list of significant hazards dealt with in this standard is given in annex A. Annex A also indicates the hazards which have n
23、ot been dealt with. Environmental aspects have not been considered in this standard. This standard applies primarily to machines which are manufactured after the date of issue of the standard. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from o
24、ther 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 revisions of any of these publications apply to this European Standard only when incorporated in it by amendment
25、or revision. For undated references, the latest edition of the publication referred to applies. EN 292-1:1991, Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology. EN 292-2:1991, Safety of machinery Basic concepts, general principles for design Pa
26、rt 2: Technical principles and specifications (including amendment A1:1995). EN 294:1992, Safety of machinery Safety distances to prevent danger zones being reached by the upper limbs. prEN 1553:1998, Agricultural machinery Agricultural self-propelled, mounted, semi-mounted and trailed machines Comm
27、on safety requirements. 3 Safety requirements and/or measures 3.1 General The machinery shall comply as appropriate with EN 292 for hazards which are not dealt with and especially with EN 292-2:1991/A1:1995, annex A, when EN 292 does not give precise requirements. Unless otherwise specified in this
28、standard, the machine shall comply with the requirements of prEN 1553:1998 and with EN 294:1992, Tables 1, 3, 4 and 6. 3.2 Requirements for all types of balers 3.2.1 Protection against hazards related to moving power transmission parts To ensure protection against hazards related to accessible movin
29、g power transmission parts, the machine shall be fitted with fixed guards (according to EN 292-1:1991, 3.22.1). When frequent access is foreseen, the machine shall be fitted with guards needing a tool for their opening. These guards shall remain attached to the machine when opened (for example by me
30、ans of hinges) and automatically lock in the closed position without the use of a tool. If this type of guards is not used, the machine shall be fitted with: interlocking movable guards (according to EN 292-1:1991, 3.22.4); or movable guards fitted with a device which prevents their opening so long
31、as the parts are moving. 3.2.2 Drawbar When the drawbar has separate positions, for transport and for working, it shall be provided with a mechanical or hydraulic locking device that requires an intentional action to change from transport to working position and from working to transport position (e
32、.g. pin, latch or hydraulic cylinder). When a hydraulic device is used, the drawbar shall remain locked in positon if the hydraulic circuit fails. 3.2.3 Pick-up device The protection of exposed persons against unintentional contact with any of the accessible moving parts at the front and at the side
33、s of the pick-up device shall be ensured by a combination of barriers and fixed parts of the machine. The projection on a horizontal plane of these protective devices shall be continuous (see Figures 1 and 2). When the pick-up device is in the working position, these barriers shall be: a minimum of
34、230 mm in front of the most forward point of the tine path and at a height h of between 500 mm and 1 000 mm above the ground (see Figure 1); a minimum of 150 mm from the sides of the tine path at a maximum height above the ground of 500 mm (see Figure 1). If the tine path is totally covered by a par
35、t of the machine when viewed from the side (see Figure 2), this barrier is not required. NOTE 1 The strength of the barriers will be dealt with in prEN 1553. Page 4 EN 704:1999 BSI 08-1999 Dimensions in millimetres 1 Tine path of the tool 2 Barrier NOTE 2 This figure illustrates an example of protec
36、tive devices complying with 3.2.3. Figure 1 Guarding of the pick-up device Page 5 EN 704:1999 BSI 08-1999 Dimensions in millimetres 1 Imperforate guard (fixed part of the machine) 2 Barrier NOTE 3 This figure illustrates an example of protective devices complying with 3.2.3. Figure 2 Guarding of the
37、 pick-up device Lateral protection ensured by an imperforate guard Page 6 EN 704:1999 BSI 08-1999 3.2.4 Feeding elements Crushing and shearing points located at a distance of less than 550 mm from the outer limit of the machine or from the extreme edges of the feeding channel shall be guarded accord
38、ing to 3.2.1. 3.3 Requirements for rectangular balers 3.3.1 Flywheel Accessible parts of the flywheel shall be guarded according to 3.2.1. If the flywheel guard is open underneath, a distance of at least 25 mm shall be provided between the flywheel and the guard; this 25 mm shall extend from the low
39、er edge of the guard for a distance of at least 120 mm; the lower edge of the guard shall be located at a maximum distance of 800 mm from the ground (see Figure 3). Dimensions in millimetres 1 Flywheel 2 Guard Figure 3 Guarding of flywheel For balers capable of forming bales with a cross section of
40、0,2 m2or greater: it shall be possible to immobilize the flywheel to avoid unintentional movement after it has stopped (for example by means of a brake or a mechanical restraining device); and when the flywheel is positioned in such a way that it is located above the crop flow when picking, the lowe
41、r part of the flywheel may be exposed, providing the flywheel has a smooth surface and the upper part is guarded for at least 2/3 of the flywheel diameter measured vertically from the top. 3.3.2 Driving mechanism for the plunger The connecting rod and crank mechanism shall be guarded according to 3.
42、2.1. The side guard shall cover the extreme path of the crank when viewed from the side. If the guard of the rod and crank mechanism is open underneath, a distance of at least 25 mm shall be provided between the rod and the crank mechanism and the guard; this 25 mm clearance shall extend from the ed
43、ge of the guard for a distance of at least 120 mm (see Figure 4). If fixed parts of the baler are located directly below the crank path at a distance d less than 300 mm from it, then the side guard shall extend below these fixed parts (see Figure 4). 3.3.3 Transmission parts of feeding elements On b
44、alers capable of forming bales with a cross section smaller than 0,2 m2, the transmission parts of the feeding elements, located in the upper part of the machine shall be guarded according to 3.2.1. When the crushing or shearing points are located at less than 850 mm from the outer limit of the mach
45、ine, a guard shall be fitted in such a way that its upper edge is located at a vertical distance of at least 130 mm above the extreme path of the crank. Between the guard and the movable parts of the machine, there shall be a safety distance of at least 50 mm. 3.3.4 Tying mechanism On the top and on
46、 the left and right hand sides, the knotter shall be guarded. At the front and rear: when the knotter is not accessible from the ground (according to EN 294:1992, Table 1), no protecton is required; when the knotter is accessible from the ground (according to EN 294:1992, Table 1), the front part sh
47、all be guarded according to EN 294:1992, Table 4 and the rear part shall be guarded against unintentional contact in accordance with Figure 5. The guarding shall be achieved by means of: guards needing a tool for their opening that remain attached to the machine when opened (for example by means of
48、hinges) and automatically lock in the closed position without the use of a tool; or interlocking movable guards (according to 3.22.4 of EN 292-1:1991); or movable guards fitted with a device which prevents their opening so long as the parts are moving. Page 7 EN 704:1999 BSI 08-1999 Dimensions in mi
49、llimetres 1 Guard 2 Fixed part of the baler Figure 4 Guarding of the driving mechanism for the plunger Page 8 EN 704:1999 BSI 08-1999 Dimensions in millimetres 1 Rear outer contour of the tying mechanism 2 Bale chamber Figure 5 Guarding of the rear part of the knotter when it is accessible from the ground It shall be possible to open the guard easily to adjust and clean the knotter. It shall be possible by means of one manual control to disengage power to the knotter and