100kN·m静重式扭矩标准装置

介绍了中国计量科学研究院研制的100kN·m静重式扭矩标准装置。该装置采用高精度大承载的刀口支承机构,力臂采用单梁结构并配置了力臂限位保护机构,砝码加载系统采用内外圈砝码组和升降机构结合的结构形式,实现了1kN·m～100kN·m范围大扭矩量值的复现。理论分析和性能验证试验表明:100kN·m扭矩装置在1kN·m～100kN·m范围内的重复性优于5×10^-5,相对扩展不确定度优于1×10^-4(k=3)。

100kN·m Deadweight Torque Standard Machine

A set of 100kN·m deadweight torque standard machine is newly developed at National Institute of Metrology. The knife edge support mechanism with high precision and large load capacity is adopt to support moment arm at the fulcrum, the moment-arm adopts the single beam structure and is equipped with the arm limit protection mechanism, the weight loading system adopts the combination of inner and outer ring weight group and lifting mechanism. The working principle and mechanical structure of the machine are introduced, the results of performance test and uncertainty assessment are described. The theoretical analysis and performance tests show that the repeatability is smaller than 5×10^-5,the uncertainty is less than 1×10^-4 (k=3) in the range of 1kN·m to 100kN·m.