Hearing sound judge agricultural machinery failure
When the agricultural motor runs normally, the sound produced is smooth, light, and even; if there are harsh noises such as screaming, dullness, friction, vibration, etc., it means that the motor has failed. First of all, it should be judged whether it is caused by mechanical or electrical reasons. The method is: Connect the power supply, there is an abnormal sound, cut off the power, abnormal sound still exists, it is a mechanical failure; otherwise it is an electrical failure. 1, the abnormal sound caused by mechanical failure The normal mechanical noise of the farm motor should be a small "rustle" sound, no change in height, no metal friction sound, that is, the sound of the normal operation of the bearing. Common abnormal sounds caused by mechanical faults are the following: (1) The "click" sound is metal friction sound. The smoke is generally caused by the dry grinding of bearing oil, and the bearings should be disassembled to add grease. (2) The “click†sound is the sound produced by the irregular movement of the roller in the bearing, which is related to the clearance of the bearing and the state of the grease. If the motor only has this sound and no other abnormalities, and the sound disappears immediately after the grease is applied, it is not a malfunction and the motor can still be used. (3) The sound of "in the temple" is the sound produced when the roller or ball runs. If there is no other noise, and the sound is obviously reduced or disappeared after the grease is added, it is generally not a fault and the motor can continue to run. (4) There are two kinds of “click†sounds. One is the sudden start, stop, and reverse braking of the motor. The acceleration torque causes the rotor core to loosen with the shaft. The second is the sound produced by the transmission mechanism, which may be caused by the looseness of the coupling or pulley and the shaft, and the wear of the key or keyway. (5) The "click" sound is the noise caused by the motor broom. (6) The periodic "click" sound is caused by the unevenness of the belt joint. 2, abnormal sound caused by electrical faults (1) Stout "buzzing" sounds, such as burrowing noises, are mainly caused by current imbalances, because the unbalanced current generates electromagnetic noise with twice the power frequency associated with the load, which is the main cause of the burning of agricultural motors. the reason. In this case, the machine should be shut down immediately and put into operation after troubleshooting. (2) The “嘶嘶†or “噼啪†sounding stator windings produce slight “嘶嘶†sounds when they are in poor contact or leakage, and “噼啪†sounding sounds in severe cases. (3) Mosquito sounds Stator windings are not tied well at the end of the stator winding or impregnated with paint. The entire stator winding ends do not form a solid whole, and individual wires are caused by the vibration caused by the electromagnetic force. (4) Metallic percussion sounds when start, stop, and load changes are generally caused by loose rotor cores. (5) Irregular frogs call for air gaps or loosening inside the core. (6) The metal dithering stator ends with the iron chip open, and the open silicon steel plate vibrates and emits metallic jitter sound. Medical glove suitable for personal or medical usage. Medical glove,Protective glove,Personal glove,disposable glove Hebei Abiding Co.Ltd , https://www.hebeiabiding.com