9-9h26 9 5E92900.E06TSh C-38-30 ISO INTERNATIONAL STANDARD 9246 First edition 1988-02-15 INTERNATIONALORGANIZATIONFORSTANDARDIZATION ORGANISATIONINTERNATIONALEDENORMALISATION MEKAYHAPOAHAROPTAHM3ALMANOCTAHAAPTM3ALM Earth-moving machinery -- Crawler and wheel tractor dozer blades -- Volumetric ratings Engins de terrassement -- Lames de tracteurs sur chenilles ou sur roues -- Evaluations volumetriques Referencenumber ISO9246:1988 (E) Copyright International Organization for Standardizatior 9246-88 9E92900 E06159 Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (iso member bodies). The work of preparing International Standards is normally carried out through Iso 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, 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 Iso Council. They are approved in accordance with Iso procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 9246 was prepared by Technical Committee ISO/TC 127 Earth-moving machinery. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. @InternationalOrganizationforStandardization,1988 Printed in Switzerland 9246-88 EO6TSah 2E92900 INTERNATIONALSTANDARD ISO 9246:1988 (E) Earth-moving machinery - Crawler and wheel tractor dozer blades Volumetric ratings Scope and field of application 3.1.2 blade width, W : Distance, in metres, from outside to outside of the blade, exclusive of the end bits (see figure 3). 1.1 This International Standard specifies a procedure for cal- culating the volume of dozer blades. It is intended to be used 3.1.3 effective blade height, H' : Vertical height, in metres forconsistentcomparisonsofdozerbladecapacitiespresented that with Wwidth, produces a projected area equal to Am : i.e. in commercial literature for tractors, as defined in ISo 6165. It is H' = Am/ W (see figure 3). notto be usedforpredicting productivity of tractordozers in actual field conditions or that might be observed in any specific 3.1.4 effective blade contour : Simplified representation of applications.Such determinations need to considerotherpara- the blade face for calculating the blade capacity based on the meters, such as efficiency of the blade, tractor power, tractive vertical plane bounded by W and H' (see figure 3). effort,soil properties,terrain,operatortechniqueand duty cycle. 3.2 Semi-U- and U-blade dozers 1.2This InternationalStandardappliestoalltypesofdozers that are mounted on all tractors defined in ISo 6747. This 3.2.1 blade projected area, Am : (ldentical to that for a includes straight, angling, semi-U-, and U-blade configur- straight blade see 3.1.1.) ations. It is assumed that the blade face is flat and vertical; the blade included volume is not considered (see figure 1). 3.2.2 blade width, W : (ldentical to that for a straight blade see 3.1.2.) References 3.2.3 effective blade height, H' : (ldentical to that for a Iso 6165, Earth-moving machinery Basic types straightbladesee3.1.3.) Vocabulary. 3.2.4 effective blade contour : Simplified representation of Iso 6746-2, Earth-moving machinery Definitionsof the blade face for calculating the blade capacity. It is dimensions and symbols - Part 2 : Equipment. established by intersecting planes extending vertically from the cutting edge at the GRP, with the blade in the mid-pitch Iso 6747, Earth-moving machinery Tractors position. The frontal dimensions are W and H' (see figure 4). Terminology. 3.2