农业机械.安全性.第12部分:转动盘,鼓式割草机和甩刀式割草机

[中文适用范围]： 本部分适用于与ISO 4254-1一起使用的旋转圆盘 mower、旋转鼓式mower和具有水平轴的打击式 mower（仅限农业使用），包括用于饲料作物收获且装有 conditioning 设备的 mowers。它涉及旨在减少或消除由于正常使用和可预见误用导致的危险的方法，并规定了制造商应提供的安全操作信息类型。 本部分适用于在地面工作，例如 A.1 中所述的 mowers。 当本部分的要求与 ISO 4254-1 的要求不同时，本部分的要求优先适用于根据本部分设计和制造的机器。 本部分连同 ISO 4254-1 处理了旋转圆盘 mower、旋转鼓式mower 和打击式 mowers 在正常使用及其可预见误用情况下的所有重要危险、危险状况和事件（除噪声和振动外）。 [外文原描述]： ISO 4254-12:2012, where used with ISO 4254-1, specifies the safety requirements and their verification for the design and construction of rotary disc mowers, rotary drum mowers, as used for forage crop harvesting in agriculture only, and flail mowers with a horizontal axis for use in agriculture only, that are mounted, semi-mounted, trailed or self-propelled. It describes methods for the elimination or reduction of hazards arising from the intended use and reasonably foreseeable misuse of these machines by one person (the operator) in the course of normal operation and service. In addition, it specifies the type of information on safe working practices to be provided by the manufacturer. Flail mowers with a horizontal axis that can be opened at the rear only for maintenance reasons are included. ISO 4254-12:2012 is also applicable to mowers equipped with a conditioning device and only to mowers intended to work at ground level. ISO 4254-12:2012, taken together with ISO 4254-1, deals with all the significant hazards, hazardous situations and events (with the exception of noise and vibrations) relevant to rotary disc mowers, rotary drum mowers and flail mowers, when they are used as intended and under the conditions of misuse that are reasonably foreseeable by the manufacturer. It is not applicable to flail mowers that have the rear part which can be opened for particular field use operations, mowers with an articulated arm, mowers with one or more vertical axes designed for mulching, pedestrian-controlled motor mowers, lawn mowers, inter-row mowing units and machines specifically designed for highway and road maintenance.