A No-Load Method to Test the Elevator Overload Protection Device
Sun Xueli;Huang Guojian;Liu Yingjie;He Shan;Peng Qifeng;Liu Wenqin;R&D Center,Guangzhou Academy of Special Equipment Inspection & Testing;
Every installed traction elevator should be tested whether the elevator protection device is proper functioning. The existing elevator overload protection device testing methods have problems with low efficiency and high cost. Based on the analysis of the overload protection devices' structures, we put forward a new no-load method to test the elevator overload protection device. We simulate the load in car by using the hydraulic system or motor system to test the overload protection device. This method can test most of elevators without loading. At present, we have got the project approval and the measurement is being designed and developed.