AS ISO 3164:2020 – Earth-moving machinery -Laboratoryevaluations of protective structures — Specifications for deflection-limiting volume.
AS ISO 3164 specifies the dellection limiting volume (DLV) to be used when performing laboratory evaluations of structures which provide protection to operators of earth-moving machinery as defined in Iso 6165.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3411:2007, Earth-moving machinery — Physical dimensions of operators and minimum operator space envelope
ISO 5353:195, Earth-moving machinery, and tractors and machinery jor agriculture and Jorestiy — Seat index point
ISO 6165. Earth-moving machinery — Basic types — Identification and terms and definitions
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
deflectIon-lImItIng volume DLV
approximation of a large seated operator as defined in ISO 3411
orthogonal DL,V
DLV(3J) that Is an orthogonal approximation of an operator
Note Ito entry: See Figure 1.
rounded DLV
orthogonal DLV (ILl) with corners rounded to approximate the curvature of the operator (e.g. head, shoulders)
Note 1 to entry: See Figure2.
orthogonal top head plane
270 mm by 330 mm rectangular horizontal surface used with the rounded DLV (4.1.2) to replicate the top horizontal surface of the orthogonal DLV (ILl)
Note ito entry: See Figure 1
Note 2 to entry: This top head pianc is to be used with the rounded DLV when testing a FOPS (falling-object protective structure).
seat index point
point on the central vertical plane of the seat as determined by ISO 5353
locating axis
horizontal axis for positioning the DLV(3.l) with respect to the SIP (3.2)
4 DLV dimensions, use and accuracy
4.1 The dimensions of the orthogonal DLV shall be as shown in Figure 1 and the dimensions of the rounded DLV as shown in Figure 2.
4.2 The dimension from the SIP to the rear boundary of the DLV assumes that the seat has 150 mm fore—aft adjustment. The 210mm dimension shall be reduced from 210mm to 135mm if the seat does not have any fore—aft adjustment. If the fore-aft seat adjustment is less than iSO mm, the 210mm dimension shall be reduced by one half of the dilTerence between 150 mm and the actual fore-aft seat adjustment.
4.3 ROPS (roll-over protective structure) and TOPS (tip-over protective structure) testing shall use either the rounded or the orthogonal DLV. FOPS (falling-object protective structure) testing shall use the orthogonal DLV or the rounded DLV with an added orthogonal top head plane.
4.4 During lateral loading for TOPS and ROPS testing, It is permissible for the upper portion of the DLV to be rotated laterally about the SIP up to 15 (see Table 1). During longitudinal loading for TOPS and ROPS testing it is permissible for the upper portion of the DLV to be rotated forwards about the LA up to 15°. See the examples given In Figure 4. The portion below the SIP of the DLV does not rotate. If there is interference with any machine component, rotation of the DLV shall be limited to the angle at which the interference occurs.