Why does the gear reduction box vibrate loudly?
Thread Content
The gear reduction box of the horizontal reactor has been vibrating louder and louder in the past two months. The input shaft of the reduction gearbox is driven by a pulley. The tighter the belt, the louder the sound, and it feels like the belt is about to jump. I was afraid that the reduction gearbox would be damaged and the machine stopped. What could be the possible reason for this?
Check the bearing clearance and gear clearance. There is a high probability of bearing problems.
Use instruments to find the source of the sound, the location of the largest vibration, and carefully check the gap and degree of damage.
It is recommended to move forward and reverse macroscopically to see the gaps. Most of this equipment is likely to have bearings. Especially the tapered bearings are most likely to have problems. You might as well open the end cover to see if there is room for adjustment (gasket adjustment).
Find a vibration spectrum analyzer to analyze whether the bearing is intact?
At present, after disassembly and inspection, it is confirmed that several bearings are worn. How do you determine whether the bearings need to be adjusted with gaskets? I don't quite understand. In addition, the gears are all dark brown in color. One side of the gear is smooth stainless steel and the other is dark brown. Does the gear mesh only touch one side? Is this normal?
At present, the bearing is indeed worn, but I don’t know if the large gap between the gear and the shaft is causing the bearing wear.
The gear in my picture was made 40 days ago. Now one side of the gear is dark brown and the other side is shiny stainless steel. It feels abnormal.
To be cautious, open the bearing end cover and take a look. If no problem can be found, disassemble it to avoid causing greater losses.