Belt conveyor is an important equipment for mine production and transportation, and the quality of equipment operation will have a direct impact on production results. The traditional conveyor drive system is mainly based on the CST system. During the use of the system, due to long-term fatigue and wear, there may be problems such as difficulty in starting heavy loads, frequent failures, long repair cycles, and high costs, which will affect the operation of the main inclined shaft belt. Direct restrictions, affecting mine production. In this environment, the low-speed and high-torque permanent magnet synchronous motor variable frequency drive system has been applied, and certain achievements have been made, which has had a positive impact on mine production.
Features of permanent magnet synchronous motor variable frequency drive system:
The system features are mainly reflected in several aspects:
① The permanent magnet synchronous motor has obvious characteristics of high torque and low speed, and can be directly connected to the belt conveyor without the need to install additional reducers;
② The overall structure of the drive system is relatively simple, the installation and operation are relatively simple, and it has high reliability;
③ The transmission efficiency of the system is relatively high, and the efficiency of the permanent magnet synchronous motor can reach more than 97%. Compared with the ordinary asynchronous motor variable frequency drive system, its high-speed coupling, reducer, and motor efficiency are all ideal;
④ The start and stop of the drive system are relatively stable, and the start-up operation with load can be completed with high quality;
⑤ The amount of system maintenance is relatively small, and the overall maintenance cost is low, which can effectively save related resources;
⑥ Even in the state of long-term operation, power balance can be achieved.
In view of the many advantages of the low-speed and high-torque permanent magnet synchronous motor variable frequency drive system, it is very feasible and effective to apply it to the main inclined shaft belt conveyor. With the support of various functions of the system, not only the existing problems of the conveyor will be effectively dealt with, but the operating environment of the conveyor will be effectively improved, and the energy consumption of equipment operation and maintenance costs will also be effectively controlled, both in terms of economic benefits and social benefits, it is far superior to the original system, and the transportation efficiency of equipment can be effectively improved, which is very beneficial to mine production, so it is worth further strengthening the research on system application, to lay a solid foundation for the application of the system.