贯入式砂浆强度检测仪智能校准装置设计及应用

发布时间：2018-07-26 10:30

【摘要】：贯入式砂浆强度检测仪是一种采用贯入法检测砌筑砂浆抗压强度的仪器,在既有工业与民用建筑物砌筑砂浆抗压强度检测中得到了广泛推广和应用,是检测砂浆强度的常用仪器,其准确与否直接关系着建筑工程质量。参照JJF1372-2012《贯入式砂浆强度检测仪校准规范》的有关内容,有必要针对贯入仪弹簧压缩20mm工作行程的力值以及由800N力值回归到零值时的行程进行校准。本文根据贯入式砂浆强度检测仪的结构与工作原理以及JJF1372-2012的有关内容,进一步研发了能够对贯入仪对中夹持,并根据检测过程中力值指标的变化自动记录相关定位位置点,智能化控制运动行程、机械手动作,并在回程检测中测试力值、位移的全数字测控校准装置。其包括机架和沿上下方向导向移动并装配在机架上用于放置贯入仪的支撑座,支撑座的上、下方分别固定有抵挡测力机构和推力加卸载机构,推力加卸载机构的输出端作用于支撑座上,支撑座的支撑端部和抵挡测力机构的挡止端部用于分别与贯入仪的主体和贯入杆接触配合,所述机架上还设有用于测量贯入杆与主体之间相对位移的位移传感器,所述抵挡测力机构具有用于测量贯入力的力传感器。本装置可使贯入仪主体与贯入杆产生相对位移,同时还能对贯入仪逐渐卸载缓慢释放工作弹簧,通过力传感器和位移传感器能够方便准确测得在卸载过程中任一位移量时的贯入力大小。实验结果表明,该校准装置使用简便、可操作性强,能较好的反映贯入仪的计量性能。
[Abstract]:The penetration mortar strength tester is a kind of instrument to measure the compressive strength of masonry mortar with penetration method, which has been widely used in the testing of masonry mortar compressive strength of existing industrial and civil buildings. It is a commonly used instrument for measuring mortar strength, and its accuracy is directly related to the quality of construction engineering. With reference to the relevant contents of the JJF1372-2012 Calibration Specification for the Penetration mortar strength detector, it is necessary to calibrate the force value of the 20mm working stroke compressed by the penetration spring and the stroke when the force value returns from 800N force to zero. According to the structure and working principle of the penetrating mortar strength detector and the related contents of JJF1372-2012, this paper further develops the ability to clamp the penetration instrument and automatically record the relevant position points according to the change of the force index during the testing process. Intelligent control of movement stroke, manipulator action, and in the return detection of the testing of the force value, displacement of the full digital measurement and control calibration device. The utility model comprises a frame and a support seat which moves along the upper and lower direction and is mounted on the frame for placing the penetration instrument. The upper and lower parts of the support seat are respectively fixed with a force resistance mechanism and a thrust loading and unloading mechanism. The output end of the thrust loading and unloading mechanism acts on the support seat, and the support end part of the support seat and the stop end part of the resistance force measuring mechanism are used for contact with the main body of the penetration instrument and the penetration rod, respectively. The frame is also provided with a displacement sensor for measuring the relative displacement between the penetration rod and the main body, and the resistance force measuring mechanism has a force sensor for measuring the penetration force. The device can cause a relative displacement between the main body of the penetration instrument and the penetration rod, and at the same time, it can gradually unload the working spring of the penetration instrument and release the working spring slowly. The penetration force of any displacement in the unloading process can be measured conveniently and accurately by force sensors and displacement sensors. The experimental results show that the calibration device is easy to use, easy to operate and can reflect the metering performance of the penetration meter.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU578.1

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