BS ISO 20474-4:2017给出了轮式和履带式反铲装载机的具体安全要求 定义见ISO 6165。本标准旨在与ISO 20474-1结合使用，该标准规定了一般要求 两个或多个土方机械系列通用的安全要求。具体要求 本文件中的规定优先于ISO 20474-1的一般要求。本文件涉及与土方工程相关的所有重大危险、危险情况和事件 其范围内的机械（见ISO 20474- 1:2017，附录A）按计划或根据 制造商可合理预见的误用情况。它规定了适当的技术标准 消除或减少相关危害、危险情况或风险的措施 调试、运行和维护期间的事件。本文件不适用于出版日期前制造的机器。交叉引用:ISO 20474-1:2017ISO 14397-1:2007 Ed 2ISO 6682:1986ISO 6165:2012 ED6ISO 8643:2017ISO 9248:1992（R04）ISO 14397- 2:2007 Ed 2ISO 7451:2007 Ed 3ISO 7096:2000（R05）ISO 7546:1983（R10）ISO 6016:2008 Ed 3ISO 3164:2013 ED6ISO 3449:2005ISO 12100:2010 Ed 1ISO 8812:2016购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO 20474-4:2017 gives the safety requirements specific to wheeled and crawler backhoe loaders as defined in ISO 6165. It is intended to be used in conjunction with ISO 20474-1, which specifies general safety requirements common to two or more earth-moving machine families. The specific requirements given in this document take precedence over the general requirements of ISO 20474-1.This document deals with all significant hazards, hazardous situations and events relevant to the earthmoving machinery within its scope (see ISO 20474-1:2017, Annex A) when used as intended or under conditions of misuse reasonably foreseeable by the manufacturer. It specifies the appropriate technical measures for eliminating or reducing risks arising from relevant hazards, hazardous situations or events during commissioning, operation and maintenance.This document is not applicable to machines manufactured before the date of its publication.Cross References:ISO 20474-1:2017ISO 14397-1:2007 Ed 2ISO 6682:1986ISO 6165:2012 ED6ISO 8643:2017ISO 9248:1992 (R04)ISO 14397-2:2007 Ed 2ISO 7451:2007 Ed 3ISO 7096:2000 (R05)ISO 7546:1983 (R10) ISO 6016:2008 Ed 3ISO 3164:2013 ED6ISO 3449:2005ISO 12100:2010 Ed 1ISO 8812:2016All current amendments available at time of purchase are included with the purchase of this document.