The structure design of combined switch in fully mechanized coal mining based on programmable logic controller
For the purpose of effectively and uniformly controlling various mining equipment in the coal mine comprehensive mining face,this article designs a combined switch structure based on a programmable logic controller for the coal mine comprehensive mining face.This switch structure is divided into main control circuit,secondary control circuit,and two types of circuits,both connected to the LCD display module and fed back the circuit status to the management personnel through the interface of the LCD display module.The two control circuits are mainly connected to relays,signal reminders,and protection circuits through programmable logic controllers,respectively to complete power supply,alarm information reminders,and coal mining equipment connection status management.The experimental results show that the method proposed in this paper can be electrically interlocked in overload and leakage conditions to ensure that there is no abnormal change in the state of the coal mining machine,and achieve unified management of abnormal coal mining equipment.The highest energy-saving ratio can reach 11.2%,and the lowest energy-saving ratio can also reach 7.8%.This indicates that the method designed in this paper has certain research value.
万方数据
维普
