prEN 474的这一部分涉及EN ISO 6165:2012中定义的与挖沟器有关的所有重大危害，危险情况和事件，以及机械化铺设单元的挖沟机，如果按预期使用，并且在不当使用条件下，可合理预见的制造商（见第4条）。它涉及: - 自走综合挖沟机; - 运输车辆（卡车，拖拉机，特种车辆）和挖沟附件的组合; - 适用于衍生机械（例如紧凑型装载机）或紧凑型工具架的挖沟互换设备）。 - 对于自行式综合挖沟机，本部分涉及所有特定的健康和安全要求。 - 对于运输车辆和集成到其上的挖沟附件（例如卡车）或安装在其上的挖掘机械（例如拖拉机）的机械，该部分prEN 474涉及所有特定的健康和安全要求挖沟附件本身以及载体车辆及其附件之间的接口（例如机械，电动，液压，控制）以及在一起使用时的相互作用和影响（例如稳定性，可视性）。 注意载体车辆受其他规定（例如道路规定）的约束。 - 对于衍生机械

This document together with EN 474 1:2022 deals with all significant hazards, hazardous situations and events relevant to trenchers as defined in Clause 3 when used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Annex A) associated with the whole lifetime of the machine as described in EN ISO 12100:2010, 5.4. The requirements of this document are complementary to the common requirements formulated in EN 474-1:2022. This document does not repeat the requirements of EN 474-1:2022 but supplements or modifies the requirements for trenchers. This document deals with: — trenchers (3.1); — trenching equipment (3.2); NOTE In this document "trenchers" entails both "trencher" and "trenching equipment". — truck vacuum trenchers (3.1.2); — trenchers equipped with trencher backhoe equipment (3.3). This document provides specific health and safety requirements of the trenching equipment itself and of the interface (e.g. mechanical, electric, hydraulic, controls) between the carrier-vehicle and its equipment as well as the interaction and effects on each other when used together (e.g. visibility). This document does not apply to carrier-vehicles which are subject to other relevant regulations. This document does not deal with continuous surface miners as defined in ISO 19224:2017, truck-trenchers that do not incorporate a vacuum extraction system or self-propelled ride-on and pedestrian controlled floor cutting-off machinery (e.g. ground saw) which are under the scope of EN 13862:2021. This document does not provide requirements for main electrical circuits and drives of machinery when the primary source of energy is an external electrical supply. This document does not provide performance requirements for safety related functions of control system(s). The following significant and relevant hazards are not covered in this document: — Transmission of power between self-propelled machinery (or tractor) and recipient machinery; — Laser; — Lightning. This document is not applicable to trenchers which are manufactured before the date of publication of this document by CEN.