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一、前言斗臂是挖掘机的重要部件之一。新设计的4m~3挖掘机斗臂(以下简称新斗臂)是按等强度原则设计,并采用了先进的焊接工艺研制成功的。洛阳矿山机械研究所受机电部委托,组织邀请了有关高等院校、研究单位和矿山用户的专家和代表对该斗臂进行了技术鉴定。鉴定认为:新设计的4m~3挖掘机斗臂属国内首创,代表了我国挖掘机斗臂的先进水平,并达到国际同类产品的水平,获得了用户和操作人
First, the foreword Bucket is an important part of the excavator. The newly designed 4m ~ 3 excavator arm (hereinafter referred to as the new arm) is designed according to the principle of equal strength, and the use of advanced welding technology developed successfully. Commissioned by the Department of Electrical and Mechanical Services, Luoyang Mining Machinery Institute invited experts and representatives from relevant institutions of higher learning, research institutes and mine users to conduct technical appraisals on the arm. Identification that: the newly designed 4m ~ 3 excavator arm is a pioneer in China, representing the advanced level of China’s excavator bucket arm, and reached the level of similar products in the world, access to users and operators