一种自供电销轴受力检测系统研究

为了实现采煤机在作业中摇臂与连接架之间的连接销轴的受力实时检测，提出了一种基于压电振动俘能自供电销轴受力检测系统，不仅为销轴过载保护提供了重要依据，而且有效解决了经常更换电源的问题。将采煤机工作过程中的振动能量有效的转换为电能，为传感器和无线采集模块提供稳定充足的电能。通过多个现场测试表明，检测系统的自供电性能稳定，截取采煤机900s内工作时间进行分析，得到销轴X、Y、Z方向上最大载荷分别为16.26173 kN、51.32143 kN、303.93931 kN，测试结果与实际工况相接近，验证了基于压电振动俘能装置的自供电销轴受力检测系统应用于实际工程检测的可行性和精确性。

One Kind of Research on a Self -powered Pin Force Detection System

In order to achieve real-time online for the force detection of the pin shaft between the rocker arm and the connecting frame in the operation of the coal mining machine,a kind of self-powered pin force detection system based on piezoelectric vibration energy harvested are proposed,which not only provides an important basis for the overload protection of the pin,and effectively solves the problem of the frequent replacement of the power supply. The vibration energy produced by the coal mining machine in the working process will be converted into electrical energy effectively,which ensures the long-term effectiveness working of the sensor and wireless strain collection module. Through multiple tests at the scene,the experiments show that,the self-powered performance of testing sys?tem is stable. Intercepting 900 s for the analysis of the coal mining machine during the working time,and the maxi?mum load of X,Y and Z are respectively 16.261 73 kN、51.321 43 kN、303.939 31 kN. The test results are close to the actual working condition,indicating that a kind of self-powered pin force detection system based on piezoelec?tric vibration energy harvested is feasible and accurate in the application of practical engineering testing.