Electric Tunnel Mucking Machine Gas Control Knowledge Point
Electric tunnel mucking machine is a kind of skimming equipment used in mines in recent years. Because of its high efficiency, safety and reliability, energy saving and environmental protection, simple operation and maintenance, it is popular in underground mines. The safety and reliability of the electric tunnel mucking machine have been improved, and the maintenance cost has been reduced while the production efficiency has been improved.
Increase the working voltage of the main contactor coil, the advantage of this change is to reduce the voltage loss of the control contact, the heat of the contactor control contact is greatly reduced, and the electrical erosion of the contact is effectively controlled. In addition, the electric motor comprehensive protector has replaced the thermal protection relay previously used. The purpose of replacement is to provide more protection for the motor. Because the motor protector uses induction detection current, the intermediate nodes generated by the use of thermal relay are reduced, tunnel mucking machine and the damage easily caused by the small contact capacity of the thermal relay is eliminated. At the same time, the power line of the motor is drawn directly from the contactor, which also increases the working intensity of the machine.
The operating power supply is changed to DC switching power supply. The advantage of this is that the wide input range of switching power supply can be fully utilized, mucking machine which eliminates the misaction caused by large pressure drop when starting due to the long distance of the power supply of the slag skimmer, and improves the working efficiency of the slag skimmer.
