1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD ICS 65.060.35 NO COPYING
2、WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Agricultural and forestry machinery Centre pivot and moving lateral types irrigation machines Safety BS EN 909:1998 +A1:2009National foreword This British Standard is the UK implementation of EN 909:1998+A1:2009. It supersedes BS EN 909:199
3、9 which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“. The UK participation in its preparation
4、 was entrusted to Technical Committee AGE/30, Irrigation and drainage equipment. A 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 c
5、orrect application. Compliance with a British Standard cannot confer immunity from legal obligations. BS EN 909:1998+A1:2009 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes int
6、o effect on 15 April 1999 BSI 2009 Amendments/corrigenda issued since publication Date Text affected 31 October 2009 Implementation of CEN amendment Al:2009; and ISBN 978 0 580 62822 1 alignment of BSI and CEN publication dates EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 909:1998+A1 July 20
7、09 ICS 65.060.35 Supersedes EN 909:1998 English Version Agricultural and forestry machinery - Centre pivot and moving lateral types irrigation machines - Safety Matriel agricole et forestier - Machines irriguer types pivot et rampes frontales - Scurit Land- und Forstwirtschaftliche Maschinen - Kreis
8、- und Linearberegnungsmaschinen - Sicherheit This European Standard was approved by CEN on 28 November 1998 and includes Amendment 1 approved by CEN on 23 May 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Stand
9、ard 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 CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French
10、, 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 CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, C
11、zech 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 COMIT E
12、UROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 909:1998+A1:2009: EEN 909:1998+A1:2009 (E) 2 Contents Page Foreword 3
13、Introduction .4 1 Scope 4 2 Normative references 4 3 Definitions 5 4 Requirements .5 4.1 General 5 4.2 Starting control 5 4.3 Stopping devices in plot limits .6 4.4 Alignment guiding 6 4.5 Stability .6 4.5.1 Pivot point 6 4.5.2 Span 6 4.5.3 Overhang 6 4.5.4 Structure .7 4.6 Power supply 7 4.6.1 Gene
14、ral 7 4.6.2 Level of protection (according to EN 60529) 7 4.6.3 Movable machines .7 4.7 Filters 7 5 Verification of safety requirements and/or measures 8 6 Information for use 8 6.1 Instruction handbook 8 6.2 Marking .8 Annex A (normative) List of hazards 11 Annex ZA (informative) ! !Relationship be
15、tween this European Standard and the Essential Requirements of EU Directive 98/37/EC“ “ 16 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“ “ 17 BS EN 909:1998+A1:2009EN 909:1998+A1:2009 (E) 3 Foreword This document (EN 90
16、9:1998+A1:2009) has been prepared 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,
17、 at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. This document includes Amendment 1, approved by CEN on 2009-05-23. This European Standard supersedes EN 908:1999. The start and finish of text introduced or altered by amendment is in
18、dicated in the text by 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 EU Directive(s), see informative Annex ZA, which i
19、s an integral part of this standard.“ Annex A is normative and 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, Bulgaria, Cyprus, Czech R
20、epublic, 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. BS EN 909:1998+A1:2009EN 909:1998+A1:2009 (E) 4 Intr
21、oduction The extent to which hazards are covered is indicated in the scope of this standard. These hazards are specific to centre pivot and moving lateral types irrigation machines. 1 Scope This standard specifies specific safety requirements and their verification for the design and construction of
22、 centre pivot and moving lateral types irrigation machines that are electrically powered. NOTE Figures 1 to 5 give illustrations of these machines. In addition, it specifies the type of information on safe working practices to be provided by the manufacturer. The list of significant hazards dealt wi
23、th in this standard is given in annex A. Annex A also indicates the hazards which have not been dealt with. Hazards due to the use of the pump associated with centre pivot and moving lateral types irrigation machines are not dealt with. Hazards induced by the use of these machines for pesticide prod
24、ucts and liquid fertilizer application are not 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
25、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 revisions of any of these publications apply to this European Standard onl
26、y when incorporated in it by amendment 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 conc
27、epts, general for design Part 2: Technical principles and specification (including amendment A1:1995). EN 294:1992, Safety of machinery, Safety distances to prevent danger zones being reached by the upper limbs. prEN 12325-2:1996, Irrigation techniques Centre pivots and moving lateral systems Part 2
28、: Minimum performances and technical characteristics. EN 60204-1:1992, Safety of machinery Electrical equipment of machines Part 1: General requirements. EN 60529:1991, Degrees of protection provided by enclosures (IP code). BS EN 909:1998+A1:2009EN 909:1998+A1:2009 (E) 5 3 Definitions For the purpo
29、se of this standard, the definitions given in EN 292-1:1991 and EN 292-2:1991 apply together with the following: 3.1 centre pivot Irrigation machine constituted of a long length pipe supported by towers equipped with wheels driven by motors, including a fixed point where water and energy arrive. NOT
30、E This irrigation machine can be used either on a complete circle or on a circle quadrant. It can be movable i.e. the pivot point can move from a working position to a new working position, during the movement the watering is stopped. 3.2 pivot point Fixed point from which the rotation of the whole
31、machine is performed. NOTE It is characterised by a structure fixed on a concrete flagstone leaving the machine free to rotate. Here feeding of water and energy are performed. 3.3 moving lateral Sprinkling lateral built on the same principal as centre pivot, the displacement of which is lateral (tra
32、nslatory motion). NOTE The control tower receives or pumps the water and receives or produces its own electrical energy. 3.4 control tower In the case of a movable system, tower which initiates the movement of the whole sprinkling lateral. NOTE It can be situated in the centre of the lateral or at o
33、ne of the ends and be equipped with 2 or 4 wheels, some of them could be driving and possibly steering. 3.5 irrigation gun Large sprinkler with slow motion return used at the end of an irrigation machine generally watering a sector. 4 Requirements 4.1 General The machines shall comply as appropriate
34、 with EN 292 for hazards which are not dealt with and especially with annex A of EN 292-2:1991/A1:1995 when EN 292 does not give precise requirements. Unless otherwise specified in this standard, the machine shall comply with the requirements of tables 1, 3, 4 and 6 of EN 294:1992. 4.2 Starting cont
35、rol The switching on control and the displacement control shall be separate. Those manual controls shall be placed on a panel lockable by a key. If the main control panel is not located on the pivot point or on the cart of a moving lateral an additional external circuit breaker shall be positioned a
36、t the pivot point or on the cart. BS EN 909:1998+A1:2009EN 909:1998+A1:2009 (E) 6 4.3 Stopping devices in plot limits In case of danger (road, railway, electrical line, buildings, .), in order to limit the displacement of the centre pivot covering a circle quadrant and moving lateral type irrigation
37、 machine to the surface intended to be watered, two stopping devices shall be placed on two separate points, each stopping device shall be able independently to stop (or reverse) the displacement. The thrusts used shall have a minimum width taking into account machine dilatation and misalignment ris
38、k, their minimum height from the ground shall be 1 m. In case of danger zone one of the devices shall be a fixed impassable obstacle. 4.4 Alignment guiding The alignment device shall be doubled with a safety device in case of misalignment. The safety device shall be activated in passive position. In
39、 case of breaking of the alignment device, a return spring or other mechanical device shall be able to bring back the machine in safety position. For movable machines, in case of loss of guiding signal or deviation of more than 0,5 m, the machine shall stop. 4.5 Stability 4.5.1 Pivot point The fixat
40、ion of the pivot point shall withstand an horizontal load F = 10 000 N applied to the top of the pivot point (horizontal axis of the elbow) and a reversing moment of Fxh = 40 000 Nm (h is the vertical distance from the application point of F to the ground). Each anchorage shall be able to withstand
41、half of the load applied by the spray line, the anchorages shall be completely apparent and treated against corrosion. 4.5.2 Span The span stability shall be checked by using the calculation note of prEN 12325-2:1996, annex A. The permissible load in accordance with the elastic limit shall be weight
42、ed with the coefficient 1,5 under static conditions. The following loading cases will be considered for a machine with and without water: difference of slope between two consecutive spans = 15 % (see example in figure 1); total slope over several spans or the entirety = 10 % (see example in figure 2
43、); relative angle between two consecutive towers = 15 (see example in figure 3); relative angle between any two towers of the machine = 30 (see example in figure 4); ground clearance H beneath these spans, or beneath the overhang at any point of the installation minimum ground clearance specified by
44、 the manufacturer (figure 5); side effort due to track effect = 10 000 N (5 000 N per wheel). The minimum steel wall thickness shall not be less than 2,5 mm. Weldings of structure elements shall be able to withstand the constraints listed in prEN 12325-2:1996, annex A. 4.5.3 Overhang A clogging indi
45、cator shall be fitted on the overhang. Gun stroke frequency shall be different from natural frequency of the structure to avoid resonance risks. BS EN 909:1998+A1:2009EN 909:1998+A1:2009 (E) 7 4.5.4 Structure The structure shall be designed to withstand a wind of 140 km/h perpendicular to the struct
46、ure measured at 10 m from the ground on a horizontal surface (in accordance with Eurocode 3). Compliance with this requirement is checked by calculation. NOTE A European standard on the climatic conditions of the installation area is in progress in CEN/TC 250/SC 1. 4.5.2 and 4.5.4 will be revised in
47、 due course to take into account the provisions of that standard. 4.6 Power supply 4.6.1 General The devices used for the power supply shall conform to EN 60204-1. NOTE Further requirements on trailing cables will be added at the next revision of the standard. 4.6.2 Level of protection (according to
48、 EN 60529) 4.6.2.1 Gear motors The gear motors case shall be equipped with a device to hold and protect the supply cable intake or supplied with a reinforced cable. They shall be IP 44. 4.6.2.2 Main control panel It shall not be less than IP 55 and equipped with a double internal door. 4.6.2.3 Other
49、 panels They shall not be less than IP 44. 4.6.2.4 Collector ring The collector box shall be IP 55. 4.6.2.5 Booster pump It shall not be less than IP 44. 4.6.2.6 Stopping devices in plot limits The switches of the stopping devices shall be protected against humidity, dust and corrosion. They shall be IP 66 if external; if they are included in boxes, theses boxes shall be IP 44. 4.6.3 Movable machines The length of the electrical supplying cable sh
