ISO 4301-1:2016 クレーン—分類—パート1：一般 | ページ 2

Foreword

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The committee responsible for this document is ISO/TC 96, Cranes, Subcommittee SC 10, Design principles and requirements.

This third edition of ISO 4301-1 constitutes a technical revision of ISO 4301-1:1986, which is provisionally retained as it specifies another approach to the classification of cranes that will continue to be used within the industry for some time. See also Annex B.

ISO 4301 consists of the following parts, under the general title Cranes — Classification:

• Part 1: General
• Part 2: Mobile cranes
• Part 3: Tower cranes
• Part 4: Jib cranes
• Part 5: Overhead travelling and portal bridge cranes

Introduction

Cranes play a part in the handling of materials by raising and moving loads the mass of which is within their rated capacity. However, there may be wide variations in their duty. The design of the crane has to take account of the duty in terms of conditions of service, in order to reach an appropriate level of safety and useful life which is in line with the purchaser’s requirements.

Classification serves as a reference framework between purchaser and manufacturer, by which a particular appliance can be matched to the intended service. It also is the system used to provide a means of establishing rational bases for the design of structures and machinery.

1 Scope

This part of ISO 4301 establishes a general classification of cranes and mechanisms based on the service conditions, mainly expressed by the following:

• the total number of working cycles to be carried out during the specified design life of the crane;
• the load spectrum factor which represents the relative frequencies of loads to be handled;
• the average displacements.

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.

Bibliography