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Chinese Standard: GB/T 21938-2021

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Earth-moving machinery—Hydraulic excavator and backhoe loader lowering control device—Requirements and tests


Standard in brief
Scope of Application:  
本文件规定了下降控制装置的性能要求和试验方法,该装置安装在液压挖掘机和挖掘装载机的动臂、中间动臂及斗杆液压缸上,用于在液压管路发生失效或破裂时控制动臂的下降速度。
本文件适用于液压挖掘机和挖掘装载机的反铲装置物件吊运作业时的下降控制装置(安装制造商规定的标准连杆机构)。在提供可替代连杆机构的机器上,仅对制造商规定的标准长度进行试验。

Basic information
Standard No:GB/T 21938-2021
Standard Name:土方机械 液压挖掘机和挖掘装载机下降控制装置 要求和试验
English Name:Earth-moving machinery—Hydraulic excavator and backhoe loader lowering control device—Requirements and tests
Standard Status:现行
Release Date:2008-06-03
Effective Date:2022-07-01
Language of Publication:中文简体

Standard Classification
ICS Number:53.100
CCS Number:P97

Related Standards
Referenced Standards:ISO 6165,ISO 9248
Adopted Standards:ISO 8643:2017
Adopted Standard Name:《土方机械 液压挖掘机和挖掘装载机下降控制装置 要求和试验》
Adoption Level:IDT

Publication Information
Number of pages:16
Number of words:27 K
Format:大16
Edition:1
Color Pages:0
Electronic Version:Yes
Color Images:No
Print Publication Date:2021-12-01

Standard Revision Information
Has Amendment:No

Other Information
Application Dept:国家市场监督管理总局、国家标准化管理委员会
Standard Type:CN
Standard Attribute:GB
Other Standard Number:21938
Drafter:王莉莉、肖传奇、吴红丽、陈新敏、刘晓强、段会文
Drafting Organization:江苏徐工工程机械研究院有限公司、福建晋工机械有限公司、天津工程机械研究院有限公司、厦门宇龙机械有限公司、柳州柳工挖掘机有限公司、新兴际华集团有限公司
Management Organization:全国土方机械标准化技术委员会(SAC/TC 334)
Proposing Department:中国机械工业联合会

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