ISO 5718-2:2023 收获机械 切割元件的要求 第2部分：大型旋转割草机上使用的刀片

标准编号：ISO 5718-2:2023

中文名称：收获机械 切割元件的要求 第2部分：大型旋转割草机上使用的刀片

英文名称：Harvesting equipment — Requirements for cutting elements — Part 2: Blades used on large rotary mowers

发布日期：2023-04

标准范围

本文件规定了在大型旋转式割草机（定义见ISO 4254-13）上用作切割元件的刀片的要求，用于通过冲击切碎作物残留物、草和小刷子。它规定了此类叶片的测试和标记要求。本文档不适用于以下设备上使用的刀片:—？为ISO 4254涵盖的饲料作物收割而设计的圆盘式割草机、滚筒式割草机和连枷式割草机？12;—？臂式大型旋转割草机；—？行人控制的电动割草机；—？ISO 5395系列涵盖的割草机。注1？本文件的主要目的是设置材料特性。大型旋转式割草机上的刀片暴露于相当大的向心力和异物的冲击。因此，本文件中包括了用于检查材料脆性和韧性的弯曲试验和夏比冲击试验。注2？本文件未规定尺寸要求。

This document specifies requirements for blades used as cutting elements on large rotary mowers (as defined in ISO 4254-13) for shredding crop residue, grass and small brush by impact.

It specifies requirements for testing and marking of such blades.

This document is not applicable to blades used on:

—    rotary disc mowers, rotary drum mowers, and flail mowers designed for forage crop harvesting as covered by ISO 4254？12;

—    arm-type large rotary mowers;

—    pedestrian-controlled motor mowers;

—    lawn mowers covered by the ISO 5395 series.

NOTE 1    The main purpose of this document is to set material characteristics. Blades on large rotary mowers are exposed to considerable centripetal forces and impacts with foreign objects. A bend test and Charpy impact test to check the brittleness and toughness of the material are therefore included in this document.

NOTE 2    This document does not specify dimensional requirements.

标准预览图