DIN EN ISO 14890-2013 Conveyor belts - Specification for rubber- or plastics-covered conveyor belts of textile construction for general use (ISO 14890 2013) German version EN ISO 1.pdf

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1、June 2013 Translation by DIN-Sprachendienst.English price group 12No part of this translation 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 5

2、3.040.20!%1 200 1 600 1 21 600 2 000 2 22 000 2 3NOTE This table does not apply to folded-edge constructions.12 Longitudinal fabric or carcass joints in solid woven and mono-ply beltingLongitudinal fabric or carcass joints are not permitted in solid woven or mono-ply belting.13 ElongationThe elongat

3、ion of the finished belting in the longitudinal direction at the reference force (see 3.2) when tested by the method described in ISO 283 shall be not greater than 4 %.14 Full thickness tensile strength The value of full thickness tensile strength (see Clause 3) in the longitudinal direction of the

4、finished belting, in newton per millimetre belt width, when determined by the method described in ISO 283, shall be not less than the value given in Table 8 for the designated belt type (see Clause 4).EN ISO 14890:2013 (E) DIN EN ISO 14890:2013-06 12 Table 8 Minimum full thickness tensile strengthDe

5、signated belt type N/mm160 200 250 315 400 500 630800 1 000 1 250 1 600 2 000 2 500 3 15015 AdhesionThe adhesion strengths when determined by the method described in ISO 252, shall be not less than the value given in Table 9 or Table 10, as appropriate.Table 9 Minimum adhesion strength of belts with

6、 synthetic filament carcassValueMinimum adhesion between adjacent pliesMinimum adhesion between covers and carcassCovers 0,8 to 1,5 mm thickCovers greater than 1,5 mm thickN/mm N/mm N/mmMean value of results 4,5 3,2 3,5Lowest graphically recorded peak value in all tests 3,9 2,4 2,9In no case should

7、the highest recorded peak value in all the tests exceed 20 N/mm in order to avoid difficulties in preparing the belt end for splicing.Table 10 Minimum adhesion strength of belts with textile carcass containing natural fibresValueMinimum adhesion between adjacent pliesMinimum adhesion between covers

8、and carcassCovers 0,8 to 1,5 mm thickCovers greater than 1,5 mm thickN/mm N/mm N/mmMean value of results 3,2 2,1 2,7Lowest graphically recorded peak value in all tests 2,7 1,6 2,2In no case should the highest recorded peak value in all the tests exceed 20 N/mm in order to avoid difficulties in prepa

9、ring the belt end for splicing.16 TroughabilityWhen tested in accordance with the method described in ISO 703, the minimum values for the ratio F/L shall be in accordance with those shown in Table 11, relative to the values for the angle of inclination shown.EN ISO 14890:2013 (E) DIN EN ISO 14890:20

10、13-06 13 Table 11 Minimum troughabilityAngle of inclination of side rollers Minimum value for the ratioF/Lup to and including 20 0,0825 0,1030 0,1235 0,1440 0,1645 0,1850 0,2055 0,2360 0,26F is the vertical deflection in the test piece, in millimetres, corrected for the belt thickness;L is the lengt

11、h of the test piece, in millimetres, when laid flat. It is equivalent to the installed width of the conveyor belt.17 SamplingSampling shall be conducted in accordance with ISO 282.18 IdentificationIt shall be possible to identify the name of the manufacturer of the conveyor belt, the fact that it co

12、nforms to this International Standard, its safety category in accordance with EN 12882, and the date of manufacture. The manner in which these data are identified shall be decided by the manufacturer or by agreement with the purchaser.Where it is decided to mark the conveyor belt using impression mo

13、ulding, the depth of the impression should not exceed 1,5 mm and the characters should be between 20 mm and 80 mm high, repeated at longitudinal spacing of approximately 15 m. In the case of slab belting, the marks may be in the transverse direction.EN ISO 14890:2013 (E) DIN EN ISO 14890:2013-06 14

14、Annex A (informative) Items to be agreed between the manufacturer and purchaserThe following items should be agreed between the manufacturer and the purchaser:-a) For long haul conveyors: for certain long haul conveyors, the maximum elongation at the reference force.b) For plastic belts: the identif

15、ication of plastic belts.c) For testing: if testing is not to be carried out by the manufacturer, this should be agreed between the manufacturer and the purchaser when the order is placed.d) Conditions of use: a statement of whether or not the conveyor belting is not for conventional use.e) Any part

16、icular characteristics not specified by this International Standard.EN ISO 14890:2013 (E) DIN EN ISO 14890:2013-06 15 Annex B (informative) Helpful information to be supplied by the purchaserB.1 ApplicabilityWhen ordering belting, purchasers should define their requirements by making reference to Cl

17、ause 4 (designation).NOTE This annex is informative and, therefore, not a (mandatory) requirement of this International Standard.B.2 Replacement beltingWhere the belt is to be replaced on an existing conveyor, the following information should be supplied:a) details of existing belt;b) belt width, in

18、 millimetres;c) belt speed, in metres per second;d) pulley diameters, in millimetres, indicating any that are crowned;e) method of take-up and amount available;f) type of drive, including coupling and configuration of drive;g) whether drive pulleys are lagged or bare;h) pitch and angle of carrying i

19、dlers, including transition distances;i) profile sketch, indicating position of drive, take-up, tripper and vertical curve radii;j) belt length, in metres;k) type of belt joint;l) motor power installed;m) type of start;n) safety category required in accordance with EN 12882, i.e. 1, 2A, 2B, 3A, 3B,

20、4, 5A, 5B or C.B.3 Additional information for a new installationWhere applicable, the following additional information should, if possible, be supplied:a) material to be conveyed;b) conditions, i.e. :1) wet, dry, sticky, greasy or abrasive;2) if hot or cold;3) temperature (if known) or description o

21、f conditions;EN ISO 14890:2013 (E) DIN EN ISO 14890:2013-06 16 4) whether or not cleaners are required;c) bulk density of material;d) size, in millimetres, of largest lumps (three dimensions);e) average size, in millimetres, of materials;f) approximate screen analysis of material (see ISO 7806 and I

22、SO 9045);g) method of handling the material immediately prior to feeding the belt;h) whether the feed is to be regulated and type of feeder preferred;i) conveyor duty in terms of mass per hour per day, stating day length in hours;j) method of discharging conveyor;k) amount of lift or fall;l) initial

23、 length (centres of head and tail pulleys);m) ultimate length (centres of head and tail pulleys);n) position of drive;o) contour sketch of proposed installation;p) preferred idler arrangement and troughing angle;q) environmental conditions;r) any special features or test requirements;s) safety categ

24、ory required in accordance with EN 12882, i.e. 1, 2A, 2B, 3A, 3B, 4, 5A, 5B or 5C.EN ISO 14890:2013 (E) DIN EN ISO 14890:2013-06 17 Annex C (informative) Lateral drift Straight runningThe conveyor belting, when running on a correctly aligned conveyor and loaded centrally, should not deviate from the

25、 central track by more than 40 mm for a belt width up to and including 800 mm, or by more than 5 % (75 mm max.) of the belt width for widths of over 800 mm.EN ISO 14890:2013 (E) DIN EN ISO 14890:2013-06 18 Bibliography1 ISO 251, Conveyor belts with textile carcass Widths and lengths2 ISO 433, Conveyor belts Marking3 ISO 7806, Industrial plate screens Codification for designating perforations4 ISO 9045, Industrial screens and screening Vocabulary5 ISO 21183-1, Light conveyor belts Part 1: Principal characteristics and applicationsEN ISO 14890:2013 (E) DIN EN ISO 14890:2013-06 19