本文件规定了安全要求、试验程序，并制定了伸缩式机械螺钉和螺母式牵引杆千斤顶和液压牵引杆千斤顶应用的最低验收标准，该牵引杆千斤顶拟安装在可互换牵引机械的工具舌上，以下称为“工具”，作为原始设备或安装有千斤顶附件支架的千斤顶。 本文件适用于安装在机具上的千斤顶或安装有千斤顶附件支架的千斤顶。这些千斤顶专门用于在储存、提升和降低机具舌片期间支撑机具的挂接点，以便于连接到农用拖拉机或从农用拖拉机上断开，以及为固定使用而调平机械。 牵引杆是设计用于与牵引车的机械连接件耦合的牵引杆。

This document specifies safety requirements, test procedures, and establishes minimum acceptance criteria for the application of telescopic mechanical screw- and nut-type drawbar jacks and hydraulic drawbar jacks intended to be fitted on the implement tongue of interchangeable towed machinery and hereafter referred to as "implement(s)" as original equipment or jacks fitted with a jack attachment mount. This document applies to implement mounted jacks or jacks fitted with a jack attachment mount. 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 of machinery for stationary use. The drawbars are those which are designed to couple with the mechanical connections of towing vehicles.