接链环是煤矿机械刮板链中连接链条的连接零件，由于接链环疲劳次数远低于圆环链疲劳次数，造成刮板链断链，严重影响煤矿生产。本文以刮板链中的接链环为研究对象，通过分析刮板输送机对接链环的要求以及接链环的工况和失效形式，在分析现有接链环类型和结构特点的基础上，对接链环结构进行重新设计，并制定了接链环的加工工艺路线，对工艺路线中的关键工艺技术进行研究，对接链环的性能进行了测试。新设计的接链环不仅疲劳次数能够达到国家行业标准要求，而且工艺路线短，成本低。课题具体研究内容有： 通过分析刮板输送机对接链环的要求以及接链环的工况和失效形式，在分析现有接链环类型和结构特点的基础上，设计新型接链环的结构，对新型接链环进行强度设计和有限元分析。 根据接链环的图样、技术要求、结构工艺性以及材料毛坯条件，选择了接链环的定位基准、加工表面加工路线、热处理工艺路线，最后拟定了新型接链环的工艺路线。 对新型接链环关键工艺技术进行研究，主要包括齿形线切割加工技术、接链环热处理技术和接链环预拉伸技术。其中齿形线切割加工技术，不仅研究了齿形线切割加工工艺，而且编写了线切割加工程序。对接链环热处理技术，包括热处理工艺、热处理设备和热处理过程进行了详细研究。 对新型接链环的性能进行了测试，根据测试项目，设计了测试方案，对设计数据进行分析，试验表明，新型接链环疲劳次数与破断载荷比现有接链环有了显著提高，已经接近世界先进水平。

Access link is mine mechanical scraper chain connecting the chain of connection parts, because then the number is far lower than the chain link fatigue frequency ring chain, scraper chain scission causing a serious impact on coal production. In this paper, scraper chain link connected to the study, by analyzing the docking scraper conveyor chain link chain link requirements and access conditions and failure modes in the analysis of the existing chain link type and then on the basis of structural characteristics , docking ring chain redesign, and then developed a line of chain link processing, the key for the routing technology to study the performance of docking link was tested. Then link the new design not only the number of fatigue can be achieved national industry standards, and process route is short, and low cost. Specific research topics are: By analyzing the docking scraper conveyor chain link chain link requirements and access conditions and failure modes, then the analysis of the existing chain link type and structural characteristics, based on the design of the structure of the new access link, then link to the new for strength design and finite element analysis According to then link the drawings, technical requirements, structure and materials of rough process conditions, then select the positioning of base link, the processing surface of the processing line, heat treatment line, and finally developed a new type of connector units of the process route. Of new access link key technology research, including tooth wire cutting technology, heat treatment technology and then link then link the pre-stretching technology. One tooth wire cutting technology, not only to study the tooth wire cutting process, and write a line cutting program. Butt link heat treatment techniques, including heat treatment, heat treatment equipment and heat treatment process in detail. Then link to the new performance of the test, according to the test project, design the test program, the design data for analysis, tests showed that the number of new access link and the breaking load and fatigue than the existing access link have been significantly increased and has close to the world advanced level.