铁路桥梁高强度螺栓施拧扭矩智能控制系统

基于物联网研发铁路桥梁高强度螺栓施拧扭矩智能控制系统,通过内置扭矩传感器、温度和湿度传感器、二维码扫描装置的定扭矩电动扳手,以及包含基础信息、施工计划、质量查询、库存管理等功能模块的数控系统,实现高强度螺栓施拧精准控制,避免超拧或欠拧现象。工程应用表明,采用铁路桥梁高强度螺栓施拧扭矩智能控制系统,施工输出扭矩与设定扭矩的偏差在±4％以内,施工输出扭矩与设定扭矩的比值平均值为0.996,标准差为0.015,采用高栓施拧扭矩智能控制系统施工,施工输出扭矩精度高且稳定。该系统能够完整、高效地记录高强度螺栓施工信息,实时掌握施工状态,随时统计分析施工质量,降低因超拧引起的延迟断裂发生概率。

Intelligent control system of high strength bolt twisting torque for railway bridge

Intelligent control system of high strength bolt twisting torque for railway bridge was built based on the Internet of Things. Through the constant torque wrench with built-in torque and temperature and humidity sensors and two-dimensional code scanning device, and numerical control system including basic information, construction plan, quality inquiry, inventory management and other functional modules, high-strength bolts can be accurately tightened and avoid the super tighten or less tighten. The engineering application shows that the deviation between the construction output torque and the set torque of the intelligent control system of high strength bolt twisting torque for railway bridge is within ±4%, the average value of the ratio between the construction output torque and the set torque is 0.996, and the standard deviation is 0.015. The use of the intelligent control system of high strength bolt twisting torque can obtain high-precision and stable construction output torque. The system can completely and efficiently record high-strength construction information, understand construction status of bolt in real-time, count and analyze the construction quality at any time, reduce the probability of delayed fracture caused by super tighten.