The RF67-11.54-2.2kW reducer belongs to the R series hard-tooth surface helical gear reducer. The frame number is 67, the reduction ratio is 11.54, and it is suitable for 2.2kW motors. Its small size, medium torque, and impact resistance characteristics are highly consistent with the working conditions of small and medium-sized auxiliary equipment in mining machinery. The specific adapting working conditions are as follows:
1. Power transmission of small mining conveying equipment
It is suitable for small belt conveyors, scraper conveyors, screw feeders and other equipment underground or on the ground in mines, such as the transportation of scattered materials in mine tunnels, quantitative feeding of powders in mineral processing plants, and material transportation at the discharge port of silos. The reduction ratio of 11.54 can convert the motor from high speed to medium and low speed output (when the input is 1450r/min, the output speed is about 125.6r/min). The 2.2kW power is enough to drive a small conveying mechanism. The hard tooth surface gear can cope with the slight impact load when conveying materials such as ore and coal powder to avoid wear of transmission parts. At the same time, the reducer is compact and can be installed in the narrow space of the conveyor frame, adapting to the complex installation environment of the mine.
2. Driving mechanism of mineral processing auxiliary equipment
It can be used as the power source for small vibrating screens, classifiers, and feeders in mineral processing plants, such as the exciter drive of small mineral processing screens and sand and gravel classification screens in laboratories, or the matching reducer for small electromagnetic vibrating feeders. The mine dressing process has high requirements for the operational stability of the equipment. The helical gears of the reducer are precisely meshed and have high transmission accuracy, which can ensure uniform vibration of the screen body or quantitative feeding of the feeder. The box is made of HT250 cast iron, which is highly rigid and can withstand high-frequency vibrations when the vibrating screen is working, preventing cracking of the box or loose bolts.
3. Matching of mine dust removal and ventilation equipment
It is suitable for small dust removal fans in underground mines or mineral processing workshops, damper adjustment mechanisms of local ventilation fans, and impeller drive auxiliary systems. The mining environment is dusty and humid. The protection level of this reducer reaches IP55, which can effectively prevent dust and splash water, and prevent dust from entering the inside of the gear box and causing lubricant oil contamination. The 2.2kW power combined with a reduction ratio of 11.54 can provide stable torque for the opening and closing of the damper and the speed regulation of the impeller, ensuring precise control of the ventilation and dust removal system and improving the mining operating environment.
4. Lifting drive of small hoisting equipment in mines
It is used for small hoists, hopper lifts, maintenance platform lifting mechanisms and other equipment in mines, such as personnel lifting platforms during mine maintenance and small lifting devices for hoppers in mineral processing plants. The reducer's overload capacity can reach 1.5 times the rated torque, and can cope with the instantaneous impact load when the lifting equipment is started. At the same time, its modular structure is easy to maintain, and disassembly and maintenance can be quickly completed at the mine site, reducing equipment downtime.
It should be noted that this reducer is of small and medium size and is not suitable for heavy-duty equipment such as large conveyors and heavy-duty elevators in the main transportation tunnel. The actual load coefficient and operating time must be combined to further check the torque and service life.
