AS ISO 6746.1 pdf download – Earth-moving machinery — Definitions of dimensions and codes Part 1: Base machine
This part of lSO 6746 defines certain dimensions of earth-moving base-machines as well as the codesidentifying those dimensions. At the same time, it specifies a reference system for defining, and acoding system for identifying,additional, similar dimensions in terminology standards and commercialspecifications.
lt is applicable to the basic types of earth-moving machinery as defined in ISO 6165.
The following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies.For undated references, the latest edition of the referenceddocument (including any amendments) applies.
ISo 6165,Earth-moving machinery — Basic types — Vocabulary
3 Terms and definitions
For the purposes of this part of lSO 6746, the terms and definitions given in ISO 6165 and thefollowing apply.
three-dimensional reference system
system used to determine dimensions of earth-moving machinesSEE:
zero Y plane
vertical plane which passes through the longitudinal centreline of the machine3.1.2
any vertical plane perpendicular to the Y plane3.1.3
any horizontal plane perpendicular to the X and Y planes3.1.4
positive direction, forward from the zero X plane, right from the zero Y plane and above the zeroZ planeNote 1 to entry:The intersection of the X,Y,Zaxes (zero planes) is normally located at a well-defined base point:i.e.SIP for a seat as defined in IS0 5353; crankshaft centreline for an engine; sprocket or rear axle centreline for atractor-dozer; ground line for machine measurements.
Note 2 to entry: If only components (e.g.engine, seat) are shown, the location and positive direction of the axisfrom the intersection of the X, Y,Zaxes (zero planes) assume the normally expected orientation of the componentto a machine, i.e.number one cylinder of engine to the front of the machine, seat facing to the front.
Note 3 to entry: If the machine or its equipment or attachment or all these are illustrated, a machine driving fromright to left is shown.
ground reference planeGRP
plane on which the machine is placed for measurements: in the case of the base machine, a hard, levelsurface; in the case of equipment and attachments, either a hard, level surface or compacted earth
Note 1 to entry:The surface used depends on the intended use of the machine and its equipment and attachments.This needs to be defined when developing specific IS0 terminology standards or commercial specifications.
machine with a cab or canopy and operator-protective structures if required, without equipment orattachments but possessing the necessary mountings for such equipment and attachments
Dimensions and codes for base machines are given in Annexes A to E, illustrating the use of the three-dimensional reference system (see Figure 1) and the coding system specified in Clause 5 to definesuch dimensions and assign codes to them. Definitions of dimensions and codes for equipment andattachments are given in lSO 6746-2.
The list of examples given in the annexes is not exhaustive. The same general principles should be usedwhen defining, and assigning identifying codes to, other earth-moving base-machine dimensions inspecific terminology standards or commercial specifications.
The three-dimensional reference system shall be used to determine such dimensions.
Each dimension is assigned a code composed of a capital letter and reference number.
A single capital letter shall be used to indicate the type of base-machine dimension, according to the following:
H = height (see Annex A);
W = width (see Annex B);
L = length (see Annex C);
R = radius (see Annex D);
A = angle (see Annex E).
More than one reference number may be added to the appropriate capital letter, depending on the needs of the specific earth-moving base machine for which a standard or commercial specification is being developed.