The four series of hard-toothed reducer gears are made of high-strength low-carbon alloy carburizing and quenching. They have high tooth surface hardness, high gear precision, high transmission efficiency, compact structure, good sealing effect, no oil leakage, small size and light weight. , center distance, center height, and transmission ratio all adopt the priority number of the priority number system. The gear parameters and structure are designed through computer optimization; the wear resistance coefficient is high, and because the motor is installed externally, maintenance is more time-saving. After the motor unexpectedly fails, disassembly and inspection are convenient and quick.
Four series of hard tooth surface reducers Selection: the diameter of the transmission drum is φ500, the motor output shaft speed is 960r/min, the original drum motor is 5.5kw, considering that the production load is increasing year by year, the motor is selected to be 7.5kw, the speed ratio Calculation: π×D×960/60=25.1m/s, 25.1/1.6=16.
Choose a reducer with a speed ratio of I=16. On the premise of meeting the needs of use, select matching steel couplings to connect the motor, reducer and mechanical drum, gradually replacing the original electric drum. To process a complete set of mechanical rollers, reducers, and couplings, the reducer produced by a domestic brand reducer factory was selected.
During installation, prefabricate the embedded bolts in the base of the reducer in advance, install the couplings at the drum end and reducer end in place, arrange for maintenance of the motor, add lubricating oil to the reducer box, and prepare the installation foundation. Use 10# channel steel facade layout. After the frame is welded and formed, the reducer is fixed with bolts on the upper part. The motor and the high-speed shaft of the reducer are connected with nylon pins. The belt conveyor roller It is connected to the reducer with a cross slide coupling. The transformation was completed in 8 hours. At the same time, the relay contactor was updated to match it. The installation foundation of the reducer must be firm, reliable and stable. In special occasions, consider the selection of lubricating oil and the input shaft of the reducer. The center line of the output shaft and the center line of the output shaft ensure coaxiality with the axis center line of the connecting part, and the error is not greater than the allowable value of the coupling.
Because the slope of the conveyor is not large, we selected four series of hard-tooth surface reducers without backstops that can rotate forward and reverse, and the rotating shafts and couplings are equipped with appropriate protective covers. After installation, before putting it into operation, turn it manually first, so that the transmission roller can rotate flexibly without jamming. Then run the reducer without load, and then connect the conveyor belt to run for 10 hours after 2 hours. After a week of lime transport operation, the effect is very good, allowing the device to achieve the best output rate and stabilize the output speed. This improvement method is simple, safe and reliable, and the equipment operation rate has been improved.
