Repair of gearbox with heating failure
1、 Troubleshooting the heating of the cycloidal reducer:
The noise of the cycloidal reducer is inherently high. If the oil temperature remains unchanged despite the high noise, it is generally not a problem. Alternatively, check the noise level and call the reducer manufacturer to inquire if the noise level is normal.
Lubrication problems often lead to gearbox heating and loud noise. If there is too much lubricating oil, stirring the oil will lose power and generate a large amount of heat. If there is too little lubricating oil, friction will also generate a large amount of heat.
The reducer used for mixing and cycloidal reducer should generally be installed vertically. In this case, small models of reducers are generally lubricated with grease. Please confirm that the amount of grease injected meets the manufacturer's requirements; Large models generally require forced lubrication to confirm if the lubrication pipeline is blocked.
Is the alignment between the reducer and the passive shaft beyond the required range? If the alignment is not good, it will cause the output shaft of the reducer to bear excessive radial force. In severe cases, it will cause a large amount of wear on the oil seal and eccentric bearing, which may also generate a large amount of heat. The eccentric bearing is a weak link in the pendulum reducer, and its quality is very important.
Reassembly, accuracy is difficult to guarantee! The reducer itself has problems with low machining accuracy, resulting in poor meshing between the curved plate and the needle gear pin. The curved plate is the core component of the cycloidal reducer, and generally low-quality manufacturers use wire cutting for machining. There is no specialized machine tool for grinding teeth, or the use of modified machine tools, resulting in low accuracy, causing great noise and generating a large amount of heat.
2、 Common fault causes and general solutions for heating of worm gear reducers:
It may be that the conveyor belt is not fixed properly, causing an increase in worm friction, severe wear on the inner shaft, and severe solid heat generation. If it is not fixed properly due to the above reasons, apply lubricating oil to the friction parts, and replace the components severely.
Check if the oil circuit is damaged, if there are any problems with the sealing components or if there is insufficient oil, or if the oil gauge is damaged. If this is the case, replace the oil plug, inject engine oil to the specified parameters, and apply glue to the sealing components to make up for leaks.
Check if there are foreign objects invading the worm gear and worm, causing deformation or damage. Then open the casing and use a powerful vacuum cleaner to remove the debris. When the object is large, tools can also be used to directly remove it, and the damaged area can be lubricated with oil.
It is also possible that the worm gear and worm gear do not match, the shaft clearance is too large, and the lubricating oil is insufficient. The solution is to polish the gear surface to make it match, add an appropriate amount of lubricating oil according to the instructions, and start the machine to check if it is normal.
The running time is too long, leading to the aging of circuit components. Replace the faulty circuit components, control the usage time appropriately, and stop the machine after continuous operation for a period of time.
3、 Reasons and solutions for the heating fault of the gear reducer:
1. The oil level in the gearbox body is too high or too low. During the operation of the gear reducer, if there is too little lubricating oil, it increases the friction between the gears, and the temperature of the reducer increases due to excessive friction; Secondly, the selection of lubricating oil should be suitable and appropriate. For example, high-power reducers should choose better lubricating oil, while low-power reducers should use lubricating grease;
Solution: If the oil level in the box is too high, refer to the corresponding user manual and make corresponding adjustments
