Equipment and attachments

BS ISO 6746-2:2003 pdf free.Earth-moving machinery- Definitions of dimensions and codes Part 2: Equipment and attachments.
This part of ISO 6746 specifies a reference system for defining, and a coding system for identifying, equipment and attachment dimensions for earth- moving machinery in terminology standards and commercial specifications.
It is applicable to the equipment and attachments of basic types of earth-moving machinery as defined in
ISO 6165.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6165, Earth-moving machineiy — Basic types — Vocabulary
For the purposes of this document, the terms and definitions given wi Iso 6165 and the following apply.
three-dimensional reference system system used to determine dimensions of earth- moving machines
See Figure 1.
3.1.1 zero Y plane vertical plane which passes through the longitudinal centreline of the machine.
3.1.2 X plane any vertical plane perpendicular to the V plane.
3.1.3 Z plane any horizontal plane perpendicular to the X and Y planes.
3.1.4 positive coordinate positive direction, forward from the zero X plane, right from the zero V plane, and above the zero Z plane.
NOTE I The intersection of the X, Y, Z axes (zero planes) is normally located at a well-defined base point:
i.e. SIP for a seat as defined in ISO 5353; crankshaft ceritreline for an engine; sprocket or rear axle centreline for a tractor-dozer; ground line for machine measurements.
NOTE 2 If only components (e.g. engine, seat) are shown, the location and positive direction of the axis from the intersection of the X, V. Z axes (zero planes) assume the normally expected orientation of the component to a machine. i.e. number one cylinder of engine to the front of the machine, seat facing to the front.
NOTE 3 If the machine or its equipment or attachment or all these are illustrated, a machine driving from nght to left is shown.
3.2 ground reference plane GRP plane on which the machine is placed for measurements: in the case of the base machine, a hard, level surface; in the case of equipment and attachments, either a hard, level surface or compacted earth.
NOTE The surface used depends on the intended use of the machine and its equipment and attachments, This needs to be defined wten developing specific ISO terminology standards or commercial specifications.
3.3 base machine machine with a cab or canopy and operator- protective structures if required, without equipment or attachments but possessing the necessary mountings for such equipment and attachments.
3.4 equipment set of components mounted onto the base machine which allows an attachment to perform the primary design function of the machine
3.5 attachment assembly of components that can be mounted onto the base machine or equipment for specific use.
3.6 component part or an assembly of parts of a base machine, equipment or an attachment.
Examples of dimensions and codes for equipment and attachments， taken from other International Standards, are given in Annexes A to E. These examples ilustrate the use of the three-dimensional reference system (see Figure 1) and the coding system specified in Clause 5 to define such dimen-sions and assign them codes.The same general principles should be used when defining, and assigning identifying codes to, other earth-moving machinery equipment or attachment dimensions in specific terminology standards or commercial specifications.The three-dimensional reference system shall be used to determine the dimensions.
The definitions of dimensions and the specification of codes for base machine are given in ISO 6746-1.
5 Coding system
Each dimension is assigned a code composed of capital letters and a reference number.
Two capital letters shall be used to indicate the type of equipment or attachment dimension, according to the following:
III= height (see Annex A);
WW= width (see Annex B);
LL = length (see Annex C);
RR = radius or reach (see Annex D);
AA = angle (see Annex E).
More than one reference number may be added to the appropriate capital letters, depending on the needs of the specific earth-moving equipment or attachment for which a standard or commercial specification is being developed.BS ISO 6746-2 pdf free download.Equipment and attachments