From the environmental impact point of view, pure electric sanitation cars should be considered no other serious noise pollution. But for the driver, there is still noise. When the car is driving at high speed, the sound of friction outside the car window sounds harsh to the driver. For electric cars, without the noise of the engine, the sound of the air flow should be very obvious, and it may be more uncomfortable than the sound of the motor. So now there are auto companies in foreign countries are considering whether to simulate the sound of the motor in the car to cover up the harsh air flow sound. Sanitation sprinkler noise causes The first reason: Because sanitation sprinklers belong to special vehicles, large-scale automobile factories do not bother with this market segment, so they are generally manufactured by small and medium-sized vehicle manufacturers. However, the small plant's development of technical capacity is relatively poor, simply did not expect to reduce noise, coupled with the procurement department is not sensitive to noise, sanitation sprinkler vehicle factory there will be no power to reduce noise. The second reason is the noise generated by the motor. 1, when the stator and the rotor wipe, it will produce a harsh "click" rubbing, which is mostly caused by bearing failure. Bearings should be inspected and damaged by updates. If the bearing is not damaged and the bearing is found inside or outside the outer ring, the bearing and end cap can be inserted or replaced. 2, the lack of phase motor operation, snoring loud. The power can be turned off again to see if it can start normally. If it cannot start, there may be a one-phase fuse circuit. The phase-to-phase operation can also occur if the switch and contactor contacts are not connected in one phase. 3. When the bearing is seriously deficient in oil, you can hear the “click†sound from the bearing room. Bearings should be cleaned and new oil added. 4, wind leaves hit the shell or debris, made a percussion sound. The wind blades should be corrected to remove debris around the blades. 5. When the cage rotor bar breaks or the winding rotor winding joint is disconnected, sometimes high and low “click†sounds, the speed becomes slower, and the current increases. Check and handle. In addition, some motor rotors and stators do not have a good fit. For example, if the length of the stator is too much longer than the length of the rotor, or if the bearing bore of the end cap wears too much, the axial turbulence of the rotor may occur. 6. Wrong wiring at the end of the stator windings, with a low squeaking noise, and a reduced speed, should be checked and called. Sanitation sprinkler noise reduction method 1. Shock Absorption: Since the materials used to make the sprinkler are metal and plastic plates, it is inevitable that resonance will occur during driving, which will cause a lot of low-frequency noise. Although the original sprinkler will also handle some of the vibration sources, it is not enough. Therefore, it is necessary to install shock-absorbing materials in both high-end cars and middle- and low-end cars. 2. Sound Absorption: When the sprinkler runs at high speed, the body itself will generate resonance noise, so it is necessary to install high-efficiency sound-absorbing cotton for noise reduction and noise reduction. 3. Sound insulation: Since the metal and plastic plate materials of medium and low-grade vehicles are relatively thin, they can not effectively prevent the introduction of external noise, so it is possible to install noise-blocking thick plates to block the noise. When designing and manufacturing garbage trucks, we should carefully select the vehicle chassis, electric motors and power take-off devices, take measures to enhance the smoothness of system movement, reduce noise, use materials that can absorb noise, and the structural design should be able to reduce vibration: through hydraulic systems and The optimization design of the loading mechanism improves the machining accuracy and assembly quality so as to reduce the noise of the vehicle operation. From the above analysis, it can be seen that solving these problems is not a difficult task but only a matter of time. pile turner machine,paper stacking machine,paper aligning machine,paper jogging machine,paper dust removing machine Anhui Innovo Bochen Machinery Manufacturing Co., Ltd. , https://www.innovomachines.com
Reasons and solutions for large noise of pure electric sanitation sprinklers