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为解决带式输送机在生产中因故障或操作失误导致旋转轴实际运行方向与需求方向不一致等问题,设计了一种旋转轴方向检测装置.基于啮合齿轮和单向离合器的相对运动关系,将旋转轴的运行方向检测转换为接近开关信号检测,并通过PLC控制器进行判断,实现方向检测功能.以双向带式输送机为对象进行测试,结果表明:该装置能够准确反馈带式输送机的实际运行状态,及时纠正生产线运行状态错误,防止出现质量事故,检测准确率达到100%,维护响应时间缩短5 min.该装置可为提高制丝生产过程控制水平提供技术支持.“,”In order to avoid direction error of rotating shaft during the running of belt conveyor due to equipment failure or operational errors, a direction detector was designed. On the basis of the relative motion of gear pair and one-way clutch, the detection of the rotating direction of a shaft was transformed into the detection of signal from proximity switch, and determined by a PLC controller. The device was tested on a two-way belt conveyor, the results showed that this device could monitor the running state of belt conveyor with the accuracy of 100%, correct the running status of processing line timely. The maintenance response time was shortened by 5 min. This device provides a technical support for promoting the process control level of tobacco primary processing.