NF EN ISO 3450
Earth-moving machinery - Wheeled or high-speed rubber-tracked machines - Performance requirements and test procedures for brake systems
ISO 3450:2011 specifies minimum performance requirements and test procedures for the service, secondary and parking brake systems of wheeled and high-speed rubber-tracked earth-moving machines, for the uniform assessment of those brake systems. It is applicable to the following earth-moving machinery, operating on work sites or in mining, or travelling on public roads: self-propelled, rubber-tyred earth-moving machines, as defined in ISO 6165; self-propelled rollers and landfill compactors, as defined in ISO 6165 and ISO 8811; self-propelled scrapers, as defined in ISO 7133; remote-control machines, as defined in ISO 6165, wheeled or rubber-tracked; derivative earth-moving machines with rubber tyres; earth-moving machines with rubber tracks and a maximum machine speed greater than or equal to 20 km/h. It is not applicable to pedestrian-controlled earth-moving machinery (see ISO 17063) or crawler earth-moving machines with steel or rubber tracks that travel at less than 20 km/h (see ISO 10265). While purpose-built underground mining machines are not within the scope of ISO 3450:2011, its provisions can generally be applied to those machines with some braking performance modifications and additions, given in an annex.
ISO 3450:2011 specifies minimum performance requirements and test procedures for the service, secondary and parking brake systems of wheeled and high-speed rubber-tracked earth-moving machines, for the uniform assessment of those brake systems.
It is applicable to the following earth-moving machinery, operating on work sites or in mining, or travelling on public roads: self-propelled, rubber-tyred earth-moving machines, as defined in ISO 6165; self-propelled rollers and landfill compactors, as defined in ISO 6165 and ISO 8811; self-propelled scrapers, as defined in ISO 7133; remote-control machines, as defined in ISO 6165, wheeled or rubber-tracked; derivative earth-moving machines with rubber tyres; earth-moving machines with rubber tracks and a maximum machine speed greater than or equal to 20 km/h.
It is not applicable to pedestrian-controlled earth-moving machinery (see ISO 17063) or crawler earth-moving machines with steel or rubber tracks that travel at less than 20 km/h (see ISO 10265). While purpose-built underground mining machines are not within the scope of ISO 3450:2011, its provisions can generally be applied to those machines with some braking performance modifications and additions, given in an annex.
- Avant-proposiv
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions2
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4 Exigences générales5
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4.1 Dispositifs de freinage exigés6
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4.2 Composants communs6
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4.3 Dispositifs de commande de freinage7
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4.4 Exigences générales relatives au dispositif de freinage de service7
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4.5 Exigences générales relatives au dispositif de freinage de secours7
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4.6 Exigences générales relatives au dispositif de freinage de stationnement7
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4.7 Exigences supplémentaires pour les engins à dispositif de freinage hydrostatique8
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4.8 Exigences supplémentaires pour les engins à dispositif de freinage combinant les fonctions de freinage et de direction8
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4.9 Performances requises et dispositif d'avertissement pour les sources à accumulation d'énergie9
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4.10 Dispositifs de freinage dotés d'un MCS électronique9
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4.11 Engins conçus pour tracter une remorque9
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4.12 Instructions et étiquettes de l'engin9
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4.13 Méthode pour évaluer la capacité de freinage sur pente11
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5 Conditions d'essai11
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5.1 Paramètres d'essai généraux11
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5.2 Conditions générales d'essai11
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5.3 État de la piste d'essai12
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5.4 Configuration d'essai de l'engin12
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6 Essais de performance12
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6.1 Généralités12
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6.2 Commandes de dispositif de freinage13
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6.3 Sources à accumulation d'énergie13
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6.4 Performance d'immobilisation14
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6.5 Distances d'arrêt15
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6.6 Autres essais des dispositifs de freinage17
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7 Rapport d'essai18
- Annexe A (informative) Freinage des engins conçus pour l'exploitation minière souterraine19
- Annexe B (informative) Méthode de calcul de la capacité de freinage sur pente24
- Bibliographie25
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