一种便捷式电梯钢丝绳张力计及控制系统的设计

Design of a Convenient Steel Wire Rope Tensiometer and Control System for Elevator

针对目前的电梯钢丝绳张力检测还停留在普通弹簧测力法,精度低下,操作不便,而现有的电子张力计体积较大、安装不便的问题,提出了一种操作方式类似于普通弹簧秤测力法的便捷式电梯钢丝绳电子张力计,该张力计配置了一种体积精巧的工装结构,通过监测工装结构的张角从而来确定拉动各钢丝绳至同一水平径向位置,解决了现有电子张力计无法精确控制加载钢丝绳的水平径向位置的问题。为实现张力计的功能和达到张力计的设计精度要求,开发了以dsPIC30F4012为主控芯片,以HX711+悬臂梁传感器为张力采集模块,以AS5045为张角监测模块的张力计控制系统。实验结果表明:该控制系统张力测量稳定性达到99.2%,非线性误差为0.14%,角度采集稳定性达到100%。该张力计兼顾了普通弹簧测力法和现有电子张力计的优点,具有操作便捷、携带方便、精度精准的优点。

In view of the problems of low precision and inconvenient operation of the common spring tension measurement method,which is still used in the tension measurement of elevator wire rope at present,and the large volume and inconvenient installation of the existing electronic tensiometer,a convenient electronic tensiometer of elevator wire rope is put forward,which is similar to the common spring tension measurement method the tensiometer is equipped with an exquisite volume tooling structure,through monitoring the tension angle of the structure can be used to determine the pulling position of each wire rope to the same horizontal radial position,which solves the problem that the existing electronic tensiometer can not accurately control the horizontal radial position of the loaded wire rope.In order to realize the function of tensiometer and meet the design accuracy requirements of tensiometer,a tensiometer control system with dsPIC30F4012 as the main control chip,hx 711 + cantilever sensor as the tension collection module and as 5045 as the angle monitoring module is developed. The experimental results show that the tension measurement stability of the control system is 99.2%,he nonlinear error is 0.14%,and the angle acquisition stability is 100%. The tensiometer has the advantages of common spring force measuring method and existing electronic tensiometer. It has the advantages of convenient operation,portability and accuracy.