标准编号：ISO 8643:2017
中文名称：土方机械 液压挖掘机和反铲装载机悬臂降低控制装置 要求和试验
英文名称：Earth-moving machinery — Hydraulic excavator and backhoe loader lowering control device — Requirements and tests
发布日期：2017-02
标准范围
This document establishes uniform requirements and test procedures for lowering control devices fitted on the boom, intermediate boom and arm cylinders of hydraulic excavators and backhoe loaders to control the rate of drop in the case of a hydraulic line failure or rupture. It is applicable to the lowering control devices of hydraulic excavators and the backhoe equipment of backhoe loaders used for object handling which are equipped with the standard linkage as defined by the manufacturer. On machines where alternative linkage combinations are offered, only the standard length defined by the manufacturer is subject to testing.
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