BS ISO 6746-1:2003 pdf free. Earth-moving machinery一Definitions of dimensions and codes 一 Part 1: Base machine.
This part of Iso 6746 defines certain dimensions of earth-moving base-machines as well as the codes identifying those dimensions. At the same time, it specifies a reference system for defining, and a coding system for identifying, additional, similar dimensions in terminology standards and commercial specifications.
It is applicable to the 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 machinery — Basic types — Vocabulary
For the purposes or this part of ISO 6746, the terms and definitions given in ISO 6165 and the following apply.
3.1 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 Y 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, V. 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 centreline 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 fron.
NOTE 3 If the machine or its equipment or attachment or all these are illustrated, a machine driving from right 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 when 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.
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 define such dimensions and assign codes to them. Definitions of dimensions and codes for equipment and attachments are given in ISO 6746-2.
The list of examples given in the annexes is not exhaustive. The same general principles should be used when defining, and assigning identifying codes to, other earth-moving base-machine dimensions in specific 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:
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.BS ISO 6746-1 pdf free download.Earth-moving machinery