农用拖车和牵引设备牵引杆千斤顶第1部分:设计安全、试验方法和验收准则

[中文适用范围]： 本文件规定了安装在可互换牵引机械机具舌上的伸缩机械螺杆和螺母型拉杆千斤顶和液压拉杆千斤顶的构造标准，建立了性能测试方法，并定义了验收标准[以下简称“机具” (s)"] 作为原始设备或替换千斤顶。 此外，它还规定了插孔制造商提供的最少标记和使用信息。 这些千斤顶专门用于 — 在储存期间支撑机具的挂接点； ——提升和降低机具舌片，以便于与农用拖拉机连接或断开； - 调平固定使用的工具。 [外文原描述]： This document specifies criteria for construction, establishes performance test methods and defines acceptance criteria for telescopic mechanical screw- and nut-type drawbar jacks and hydraulic drawbar jacks intended to be fitted on the implement tongue of interchangeable towed machinery [here after referred to as "implement(s)"] as original equipment or as replacement jacks. In addition, it specifies minimum markings and information for use to be provided by the jack manufacturer. These jacks are used specifically for — supporting the hitch points of implements during storage; — lifting and lowering of implement tongues to facilitate attaching to or disconnecting from an agricultural tractor; and — levelling an implement for stationary use.