Wire Rope Inspection Technology Research Based on Weak Magnetic
SHI Rong1，GUO Peng1，WANG Jin-dong2，WANG Lei1
1.Parallel Robot and Mechatronic System Laboratory of Hebei Province,YanShan University, Qinhuangdao,Hebei 066004,China;
2.National Space Science Center CAS, Beijing 100190,China
Abstract：Based on magnetic charge analysis theory, the broken wire rope magnetic dipole model was established, and the calculation of the single fracture leakage magnetic field in the distribution law. The excitation circuit parameters are experimentally studied through the orthogonal design method, the basic structure and basic parameters of the weak magnetic magnetization system are determined, and the integration design of the magnetization and the detection is achieved.According to the leakage magnetic field strength at wire rope defects in the case of weak magnetic incentives, the MR01 type magnetoresistive sensor with high sensitivity is chosen.The measured curves of a variety of broken wires in form is also described.The experimental results show that the wire rope magnetic detection system based on the MR01 type magnetoresistive sensors is not only able to achieve the effective detection of the fracture in small size but also for the remanence detection.It is a valuable research for the development of the wire rope inspection technique.
2014, Vol. 35 
