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通过对3MN单链拔管机拔制小车夹钳的有限元计算和夹钳力能参数的现场测试结果分析，找到了重型链式拔机的夹钳工作时主要受力特征。指出了链式拔机在设计、制造和使用时应注意的事项。
Through the analysis of the field test results of 3MN single-chain pulling machine pulling trolley clamp and the field test results of clamp force energy parameters, the main force characteristics of the working process of the heavy chain pulling machine were found. Point out the chain pulling machine in the design, manufacture and use should pay attention to the matter.