Coal mining scraper conveyor can be used for horizontal or inclined transportation, so it has become an indispensable part of the mechanization and automation of material handling systems. The main structure and components of each type of scraper conveyor are basically the same. It consists of three parts: the head, the middle and the tail. Therefore, their general faults and processing are also the same. Let's take a look at some common faults.
In daily operation, the failure of coal mining scraper conveyor motor to start or the slow speed may be due to heavy overload and overload; the scraper, scraper chain, reducer and head sprocket in operation are severely blocked; the scraper conveyor The laying is not straight, the convexity is serious; the power supply voltage is low; the transformer capacity is small, the transformer power supply distance is long, the starting voltage drop is too large; the motor itself is faulty, etc. Treatment method: Adhere to the no-load and no-load startup. Before running the scraper conveyor, it is necessary to carry out a roving inspection to check that there are no jams in the scraper, scraper chain, reducer, head sprocket, etc. Straighten, shorten the distance of transformer power supply, and have sufficient transformer capacity during design.
The heat of coal mining scraper conveyor motor may be due to the side of the motor blades being buried with floating coal or debris or the motor heat sink is not clean, the motor heat dissipation is not good; the motor is overloaded for too long; the bearing is short of oil or damaged or too much oil The motor is not concentric with the shaft, or the bolts are loose, the vibration is large, and the head is unstable; the starting is too frequent, the starting current is large, and the heavy load is overloaded. Treatment method: clean up the sundries and floating coals of the motor, keep good ventilation, and do not run for a long time under overload. Check the rotating parts, the quality of the consumables, the concentricity of the shaft, the bolts are loose, and overload operation is strictly prohibited.
