港口起重机旁压式电子起重量限制器校准技术研究

Research on calibration technology of port crane-load capacity limiter

根据港口起重机多场景起重量限制器计量校准需求,提出了实验室和现场条件下起重量限制器计量技术指标,以旁压式起重量限制器为研究对象,开展了起重量参量的量值溯源方法研究,建立了量值溯源路径。以万能试验机为标准器,在实验室模拟起重量限制器现场使用条件,设计专用承载组件,实现了起重量限制器在标准环境下的高精度校准。以砝码为标准器,在现场条件下研发了计量标准装置,实现了等效复杂现场条件下起重量限制器原位校准。构建了多场景下测量不确定度模型,完成了示值测量结果不确定度分析与评定。依据提出的校准方法,对起重量限制器在实验室标准环境与港口复杂现场环境下的计量性能、校准方法提供了符合验证。结果表明:校准方法提升了起重量限制器测量数据的精准性、稳定性和可靠性,有效解决了港口起重机起重量限制器量值溯源难题,对于提升智慧港口运行效率和保障港口安全具有重要意义。

Based on the calibration requirements of multi-scenario load capacity limiter for port cranes,measurement technical indicators for load capacity limiter under laboratory and on-site conditions were proposed.A traceability method of lifting capacity parameter values was researched,and a value traceability path was established.In the laboratory,a universal testing machine was used as a standard to simulate the on-site usage conditions of the load limiter.A dedicated load-bearing component was designed to achieve high-precision calibration of the load limiter in a standard environment.Under on-site conditions,a measuring standard device was developed using weights as a standard,achieving in-situ calibration of the load capacity limiter under equivalent complex on-site conditions.A measurement uncertainty model for multiple scenarios was constructed,and the analysis and evaluation of uncertainty in indication measurement results was completed.Based on the calibration method proposed in this paper,a composite conformity verification was provided for the metrological performance and calibration method of the lifting capacity limiter in laboratory standard environments and complex on-site environments in ports.The results show that the accuracy,stability,and reliability of the measurement data of the lifting capacity limiter would be improved.The problem of the traceability of the measurement value of the completed port cranes could be effectively solved,which is crucial for improving operational efficiency of smart ports and ensuring port safety.