ISO 7096:2020
Earth-moving machinery — Laboratory evaluation of operator seat vibration
Earth-moving machinery — Laboratory evaluation of operator seat vibration
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 23
- Дата публикации:
- 25 февраля 2020 г.
- Издание:
- ISO IS 7096 edition 4 version 1
- ICS:
- 13.160
1.1 This document specifies, in accordance with ISO 10326‑1:2016, a laboratory method for measuring and evaluating the effectiveness of the seat suspension in reducing the vertical whole-body vibration transmitted to the operator of earth-moving machines at frequencies between 1 Hz and 20 Hz. It also specifies acceptance criteria for application to seats on different machines. 1.2 This document is applicable to operator seats used on earth-moving machines as defined in ISO 6165. 1.3 This document defines the input spectral classes required for the following earth-moving machines. Each class defines a group of machines having similar vibration characteristics: — rigid-frame dumpers >4 500 kg operating mass; — articulated-frame dumpers; — scrapers without axle or frame suspension[1]; — wheeled loaders >4 500 kg operating mass; — graders; — wheeled dozers; — soil compactors; — backhoe loaders; — crawler dumpers; — crawler loaders; — crawler-dozers ≤50 000 kg operating mass[2]; — compact dumpers ≤4 500 kg operating mass; — wheeled compact loaders ≤4 500 kg operating mass; — skid-steer loaders, wheeled ≤4 500 kg and tracked ≤6 000 kg operating mass. 1.4 The following machines impart sufficiently low vertical vibration inputs at frequencies between 1 Hz and 20 Hz to the seat during operation that these seats do not require suspension for the attenuation of transmitted vibration: — excavators, including walking excavators and cable excavators[3]; — trenchers; — landfill compactors; — non-vibratory rollers, except soil compactors; — vibratory rollers, except soil compactors; — pipelayers; — horizontal directional drills (HDD). 1.5 The tests and criteria defined in this document are intended for operator seats used in earth-moving machines of conventional design. NOTE Other tests can be appropriate for machines with design features that result in significantly different vibration characteristics. 1.6 Vibration which reaches the operator other than through the seat, for example that sensed by the operator's feet on the platform or control pedals or by the operator´s hands on the steering-wheel, is not covered. [1] For scrapers with suspension, either a seat with no suspension can be used, or one having a suspension with high damping. [2] For crawler dozers greater than 50 000 kg, the seat performance requirements are suitably provided by a cushion type seat. [3] For excavators, the predominant vibration is generally in the fore and aft (X) axis.
Abstract
Overview - What ISO 7096:2020 covers
ISO 7096:2020, "Earth‑moving machinery - Laboratory evaluation of operator seat vibration", specifies a laboratory method (based on ISO 10326‑1:2016) to measure and evaluate how effectively an operator seat suspension reduces vertical whole‑body vibration transmitted to the operator at frequencies between 1 Hz and 20 Hz. The standard defines test procedures, input spectral classes for groups of earth‑moving machines, and acceptance criteria (including SEAT factor and damping performance) for seats used on conventional earth‑moving machines.
Key technical topics and requirements
- Laboratory test method: Simulated input vibration tests to measure transmitted vertical vibration and quantify seat performance.
- Frequency range: Focus on 1–20 Hz vertical whole‑body vibration transmitted through the seat (but not vibration via feet, pedals, or hands).
- Input spectral classes: Defines ride/vibration classes for many machine groups (e.g., rigid‑frame and articulated dumpers, wheeled loaders >4 500 kg, graders, wheeled dozers, backhoe loaders, soil compactors, crawler loaders, skid‑steer loaders, compact machines).
- Acceptance criteria: Performance metrics such as the SEAT factor and damping test outcomes used to judge whether a seat meets the standard for a given machine class.
- Test conditions: Requirements for test seat preparation (run‑in, adjustment), test person/posture, simulated vibration inputs, tolerances, and reporting.
- Active/semi‑active systems: Special damping test provisions for seats with active or semi‑active suspension.
- Scope exclusions and notes: Identifies machine types that typically do not require seat suspension (e.g., excavators, trenchers, many rollers, pipelayers, horizontal directional drills) and notes that special machine designs may need other tests.
Practical applications - who uses ISO 7096:2020
- Seat and machine manufacturers - to design, validate and certify operator seats and suspension systems for specific earth‑moving equipment.
- Test laboratories - to perform repeatable laboratory evaluations and produce standardized test reports.
- Regulators and safety bodies - to define acceptance criteria and assess compliance with vibration‑related ergonomics requirements.
- Purchasers, fleet managers, and maintenance teams - to compare seat options, specify replacement seats, and improve operator comfort and safety.
Related standards (select)
- ISO 10326‑1:2016 (laboratory vehicle seat vibration method)
- ISO 6165 (earth‑moving machinery classification)
- ISO 2631‑1 (evaluation of human exposure to whole‑body vibration)
- ISO 8041‑1 (vibration measuring instrumentation)
- ISO 12100 (safety of machinery - design principles)
- ISO 13090‑1 (safety aspects of tests with people)
Keywords: ISO 7096:2020, earth‑moving machinery, seat vibration, operator seat, whole‑body vibration, seat suspension, SEAT factor, laboratory test, input spectral classes.
Технические детали
- Технический комитет
- ISO/TC 127/SC 2 - Safety, ergonomics and general requirements
- SKU
- ISO 7096:2020
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