The motor is the power source of the self loading mixer, and the quality of the motor also determines whether the self loading mixer can work for a long time. Maybe you encounter the motor heating when using the self loading mixer. Yes, that's right. After working for a long time, the motor will also dissipate heat and generate heat. Today, Xiaobian will take you to understand the causes of the motor heating of the self loading mixer.

1、轴承工作不正常，必定造成电机发热

1. If the bearing does not work normally, it must cause the motor to heat up

轴承工作是否正常可凭听觉及温度经验来判断。可用手或温度计检测轴承端判断其温度是否在正常范围内；也可用听棒(铜棒)接触轴承盒，若听到冲击声，就表示可能有一只或几只滚珠轧碎，如果听到有咝咝声，那就是表示轴承的润滑油不足，电机应在运行3,000小时～5,000小时左右换一次润滑脂。

Whether the bearing works normally can be judged by hearing and temperature experience. The bearing end can be detected by hand or thermometer to judge whether its temperature is within the normal range; You can also use a listening stick (copper rod) to contact the bearing box. If you hear the impact sound, it means that one or several balls may be crushed. If you hear the hissing sound, it means that the lubricating oil of the bearing is insufficient. The motor should change the lubricating grease every 3000 ~ 5000 hours.

2、自上料搅拌车电机定、转子之间气隙很小，容易导致定、转子之间相碰

2. Since the air gap between the stator and rotor of the motor of the self loading mixer is very small, it is easy to cause the collision between the stator and rotor

在中、小型电机中，气隙一般为0.2mm～1.5mm。气隙大时，要求励磁电流大，从而影响电机的功率因数；气隙太小，转子有可能发生摩擦或碰撞。一般由于轴承严重超差及端盖内孔磨损变形，使机座、端盖、转子三者不同轴心引起扫膛，很容易使电机发热甚烧毁。

In small and medium-sized motors, the air gap is generally 0.2mm ~ 1.5mm. When the air gap is large, the excitation current is required to be large, which affects the power factor of the motor; If the air gap is too small, the rotor may have friction or collision. Generally, due to the serious out of tolerance of the bearing and the wear and deformation of the inner hole of the end cover, the different axes of the base, end cover and rotor will cause chamber sweeping, which is easy to heat or even burn the motor.

3、电机的不正常振动或噪音容易引起电机的发热

3. Abnormal vibration or noise of the motor is easy to cause heating of the motor

这种情况属于电机本身引起的振动，多数是由于转子动平衡不好，以及轴承不良、转轴弯曲，端盖、机座、转子不同轴心，紧固件松动或电机安装地基不平、安装不到位造成的，也可能是机械端传递过来，应针对具体情况排除。

This situation belongs to the vibration caused by the motor itself. Most of it is caused by poor dynamic balance of the rotor, poor bearing, bending of the rotating shaft, different axis of the end cover, base and rotor, loose fasteners or uneven installation foundation and inadequate installation of the motor. It may also be transmitted from the mechanical end, which should be eliminated according to the specific situation.

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