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基于国标中对液压支架立柱及支撑千斤顶的挠度检测要求,设计了挠度自动检测系统。通过对比现有位移测量方法,选择了激光三角法进行位移测量,将激光位移传感器固定在滑座上,利用步进电动机驱动滑座在带齿圈的环行导轨上运动,从而实现了对被试件加载前后挠曲变化的自动扫描检测,并给出了挠度计算方法。开发了专用测试软件,实现了步进电动机控制、传感器数据采集、数据分析与处理、报表生成与打印等功能。进行了误差分析和重复性测试,结果表明,测试系统能够实现立柱和支撑千斤顶的挠度自动化检测,提高了检测精度,降低了劳动强度,避免了人为因素造成的影响。
Based on the national standard of hydraulic support column and support jack deflection testing requirements, the design of the deflection automatic detection system. By comparing the existing displacement measurement methods, the laser triangulation method was used to measure the displacement, the laser displacement sensor was fixed on the carriage, and the carriage was driven by the stepper motor to move on the ring gear with ring gear, Automatic scanning detection of flexural changes before and after loading, and the calculation method of deflection is given. Developed a dedicated test software to achieve the functions of stepper motor control, sensor data acquisition, data analysis and processing, report generation and printing. The error analysis and repeatability test are carried out. The results show that the test system can realize the automatic deflection test of the column and support jack, improve the detection accuracy, reduce the labor intensity and avoid the influence of human factors.