Mhcims of meiheng company is a crane information solution specially developed for crane safety operation monitoring and comprehensive information management. It has real-time monitoring, storage, query and other safety monitoring functions for crane safety information. It also has three main line management functions for crane health management, efficiency / energy efficiency management and equipment operation and maintenance management.

Our mhcims system has been applied to a new casting crane in an iron and steel plant in East China. In the process of customer service, the user reported that the main contactor of the crane was frequently disconnected at 5 p.m. the day before, and there would be disconnection fault after a short period of power transmission, but the fault disappeared after 8 p.m.

Our engineers found through the historical fault alarm data that the crane had more than one point in the previous day from 5:00 p.m. to 6:00 p.m. within one hour, the crane repeatedly reported the large and small over-current fault history records, while in the system design, when the lifting and translation mechanism had over-current, the main contact would be disconnected, which was consistent with the fault phenomenon.

By querying the statistics of mhcims system, the engineer found that in the operation information of the equipment, the number of actions of the large and small linkage platform and the number of motor start-up increased sharply in these two days, which should be abnormal.

In order to understand the driver's response measures at that time, it is found that there are frequent operation of big and small gears in the operation process of shift changing drivers at 5 p.m., and any one gear will not stay over, while drivers in other time periods operate smoothly without corresponding fault.

Therefore, we can basically confirm the cause of the abnormal phenomenon: the large and small mechanisms adopt the traditional resistance cutting control mode. Due to frequent operation of gears, the motor starts and the rotor cuts resistance frequently, resulting in large switching current, causing the large and small over-current protectors to act and reporting the over-current fault, which is consistent with the mhcims fault history data and the fault phenomenon reflected by the on-site maintenance personnel It has become an effective helper to discover and solve various problems.

By suggesting the driver on duty to change the operation mode, the fault did not happen again.

In the integrated management and application of crane, mhcims has become a powerful helper to find and solve various problems.