The paper introduces the testing method of shearer in underground, and aimed at the vibration and deformation of shearer arm, this paper analyzes the results of the testing. The results are helpful to understand the shearer's work performance and dynamic characteristics, guide the design of shearer and improve mining technology.%本文介绍了采煤机井下测试的方法，并针对采煤机摇臂在工作中的振动和变形，对测试结果进行了分析。分析的结果有助于了解采煤机的工作性能和动态特性，以及指导采煤机的设计和改进采煤工艺。
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