超清版 GB/T 17889.4-2024 梯子 第4部分：铰链梯

ICS 13.110
CCS J 09
中华人民共和国国家标准
GB/T 17889.4—2024
梯子　第4 部分：铰链梯
Ladders—Part 4: Hinged ladders
代替 GB/T 17889.4－2012
2024-08-23 发布2024-08-23 实施
国家市场监督管理总局
国家标准化管理委员会发 布

目　　次
前言 ····································································································· Ⅲ
引言 ····································································································· Ⅴ
1 范围 ·································································································· 1
2 规范性引用文件 ······················································································ 1
3 术语和定义 ··························································································· 1
4 功能尺寸 ······························································································ 4
4.1 一般要求 ························································································· 4
4.2 铰链梯用作倚靠式梯子或自立式梯子 ··························································· 5
4.3 多铰链梯用作平台 ··············································································· 5
4.4 多铰链梯用作支座 ··············································································· 6
5 要求 ·································································································· 7
5.1 一般要求 ························································································· 7
5.2 台板件 ··························································································· 7
6 试验方法 ······························································································ 7
6.1 一般要求 ························································································· 7
6.2 铰链梯强度试验 ················································································· 7
6.3 多铰链梯的附加强度试验 ········································································ 8
6.4 铰链循环试验 ···················································································· 9
6.5 铰链梯用作平台时的试验 ········································································ 9
7 使用信息 ···························································································· 11
7.1 一般要求 ························································································ 11
7.2 标志 ····························································································· 11
7.3 使用说明书 ····················································································· 11
附录A （规范性） 铰链梯试验顺序 ·································································· 13
参考文献 ································································································ 15


前　　言
本文件按照GB/T 1.1—2020《标准化工作导则　第1 部分：标准化文件的结构和起草规则》的规定
起草。
本文件是GB/T 17889《梯子》的第4 部分。GB/T 17889 已经发布了以下部分：
—第1部分：