This standard specifies the trainer-seat defection limiting volume (DLV), space envelope and performance requirements, and dimensions, for use in laboratory evaluations of protective structures on earth-moving machinery as defined in ISO 6165.
The effects of vibration are not considered a significant risk for short-term or temporary seats and are therefore outside the scope of this standard.
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 2867 Earth-moving Machinery - Access Systems
ISO 3411 Earth-moving Machinery - Physical Dimensions of Operators and Minimum Operator Space Envelope
ISO 3449 Earth-moving Machinery - Falling-object Protective Structures - Laboratory Tests and Performance Requirements
ISO 3471 Earth-moving Machinery - Roll-over Protective Structures - Laboratory Tests and Performance Requirements
ISO 5006 Earth-moving Machinery - Operator's Field of View - Test Method and Performance Criteria
ISO 5353 Earth-moving Machinery，and Tractors and Machinery for Agriculture and Forestry - Seat Index Point
ISO 6165 Earth-moving Machinery - Basic Type - Identification and Terms and Definitions
ISO 6683 Earth-moving Machinery - Seat Belts and Seat Belt Anchorages - Performance Requirements and Tests
ISO 9248 Earth-moving Machinery - Units for Dimensions，Performance and Capacities，and Their Measurement Accuracies
ISO 10262 Earth-moving Machinery - Hydraulic Excavators - Laboratory Tests and Performance Requirements for Operator Protective Guards
ISO 12117-2 Earth-moving Machinery - Laboratory Tests and Performance Requirements for Protective Structures of Excavators - Part 2: Roll-over Protective Structures (ROPS) for Excavators of over 6t
ISO 20474-1 Earth-moving Machinery - Safety - Part 1: General Requirements
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
locating axis; LA
horizontal axis for positioning the DLV (3.2) with respect to the seat index point (SIP)
3.2
deflection limiting volume; DLV
orthogonal approximation of a large, seated operator, as defined in ISO 3411, wearing normal clothing and a protective helmet
Note 1: Adapted from ISO 3164:1995, definition 3.1.
GB/T 25625-2017 The following standards are cited：
