1、International Standard f& 8912 0 a 4 4igL!b ,NTERNAT,ONAL ORGAN,ZAT,ON FOR STANDARDIZATION*MEXYHAPOflHAR OPrAHMSAL&tR n0 CTAHAPTkl3AUMbl*ORGANlSATlON INTERNATIONALE DE NORMALISATION Equipment for working the soil - Roller sections - Coupling and section width Matkriel de travail du sol - Sections de
2、s rouleaux remorquhs - Attelage et largeur de section First edition - 1986-10-15 Gi UDC 621.314 Ref. No. IS0 8912-1986 (E) Descriptors : agricultural machinery, tilling equipment, rolls, couplings, specifications, dimensions. c4 ii 2 - Price based on 3 pages Copyright International Organization for
3、Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I I j i Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of p
4、reparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental
5、 in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring a
6、t least 75 % approval by the member bodies voting. International Standard IS0 8912 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry. Users should note that all International Standards undergo revision from time to time and that any reference made her
7、ein to any other International Standard implies its latest edition, unless otherwise stated. 0 International Organization for Standardization, 1986 0 Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or
8、 networking permitted without license from IHS-,-,-INTERNATIONAL STANDARD IS0 8912-1986 (E) Equipment for working the soil - Roller sections - Coupling and section width 1 Scope and field of application This international Standard specifies characteristics of coupling devices and lays down dimension
9、s for the section width of trailed agricultural rollers used for working the soil. 2 References IS0 500, Agricultural tractors - Power-take-off and drawbar - Specification. IS0 4254/I, Tractors and machinery for agriculture and forestry - Technical means for ensuring safety - Part 1 : General. 3 Gen
10、eral requirements 3.1 Front-mounted (according to the direction of travel) coupling halves shall be of a ring-type design. The hitch ring of the leading section shall be designed to ac- commodate a tractor drawbar clevis as specified in IS0 500. 3.2 Rear-mounted coupling halves shall be of a clevis-
11、type design. 3.3 All couplings shall allow free articulation around the ver- tical axis and + 30” around both the transverse and longitudinal axes. 3.4 Section widths shall comply with the dimensions given in figure 1. Recommended hitch height for the leading section is 400 Ifr 50 mm. Recommended hi
12、tch height for following sec- tions is approximately equal to the height of the roller axle. 3.5 If the design of the roller requires coupling facilities other than the central ones, any such facilities shall be placed along the centreline of the outermost (plain) roller rings (see figure I). 3.6 Dr
13、awbar jacks or supports in accordance with IS0 4254/l may be required. Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IS0 8912-1986 (E) Dimensions in millimetres 23“ IT-
14、 d NOTE - The figure is only given for the purpose of referring to the dimensions and does not purport to specify design details. Parameter Dimensions Leadina section Followina section Ring hole diameter, d 33 23 Hitch length, A 1 350 min. 550 * 50 Section width, B 1 500 - 1 800 - 2 lOO* - 2 400*) 2
15、 800* Figure 1 - Section dimensions 1) Roller sections may not have these holes. 2) Mainly for rollers having only one section. 2 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from
16、IHS-,-,-IS0 8912-1986 (El Examples of hitching with three or five sections for working or transport Annex All wings shall be foldable within the limits specified for the section width during transport (see figure 2). Following section Figure 2 - Examples of hitching with three or five sections 3 Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
