基于压电振动俘能的自供电刮板输送机张力检测系统

为实现对刮板输送机运行过程中链条张力的有效检测,克服供电模块需要定期拆卸更换的难题,提出了一种基于压电振动俘能自供电的刮板输送机张力检测系统.通过采集刮板运行过程中产生的振动能量实现电能的有效转换,保证张力检测装置和无线信号发射装置长期有效工作.通过系统多个周期张力检测实验结果表明,检测系统自供电性能稳定;截取103 s的单周期进行分析,刮板经过链轮时的最大张力峰值为274.2 kN,通过计算两端部啮合点张力的差值得到下边链的运行阻力为12 kN,测试结果符合现场实际工况,表明系统具有较高的检测精度及可靠性.

Self-powered Tension Testing System For Scraper Conveyor based on Piezoelectric Vibration Energy Harvested

In order to realize the effective detection for the chain tension of scraper conveyor in the process of run-ning,and overcome the problem of power-supply module which needs regular disassembly and replacement,pro-pose a kind of self-powered tension testing system for scraper conveyor based on piezoelectric vibration energy har-vested. realize the effective conversion of electrical energy by collecting the vibration energy produced in the run-ning process of scraper,ensure the long-term effectiveness working of tension detection device and wireless signal launcher. Through multiple cycles tension detection of system,the experiments show that,the self-powered perfor-mance of testing system is stable;intercept 103 s for the analysis of single cycle,the maximum tension peak value is 274.2 kN during the scraper running through the sprocket,the running resistance of lower chain is 12 kN which is got by computing the meshing point tension difference of both ends,the testing results fit the actual working condi-tion,it shows that the system has higher test accuracy and reliability.