基于压电振动俘能装置的采煤机滚筒扭矩检测系统

摘要

In order to achieve real-time shearer roller torque detection precision,this paper pro-posed a self-powered detection system based on piezoelectric vibration energy harvesting device.The vibration energy produced by the shearer in the working processes ofY and Z directions would be con-verted into electrical energy effectively,which ensured the long-term effectiveness working of the pin shaft sensor and wireless strain collection moduler and avoided the problems of power-supply module which needed replacement and repeated disassembly.The results of the experiments show that the self-powered performance of testing system is stable,the load of the shearer roller in the Y and Z direc-tions may be detected precisely in real time,the roller torques are calculated,and indicates that the system has higher accuracy and reliability.%为实现采煤机滚筒扭矩的实时精确检测，提出了一种基于压电振动俘能装置自给供电的滚筒扭矩检测系统。压电振动俘能装置将采煤机工作过程中Y、Z 方向上产生的振动能量有效地转换为电能，实现对检测系统无线应变采集模块和销轴传感器的长期、稳定供电，避免了电池更换需要反复拆卸的难题。现场实验测试表明，扭矩检测系统自供电性能稳定，系统能够实现采煤机滚筒Y、Z 方向上所受载荷的实时、精确检测，从而准确推算出滚筒的扭矩，系统具有较高的检验精度和可靠性。