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圆锥碎石机轴承抱死怎么解决?
网址:http://www.dhfjx.cn    发布时间:2021-03-11
圆锥碎石机轴承抱死怎么解决?
How to solve the problem of bearing locking of cone crusher?
1.装配时轴承外圈与轴承座孔或轴承内圈与轴配合不当。
1. Improper fit of bearing outer ring with bearing seat hole or bearing inner ring with shaft during assembly.
在装配过程中,没有修磨内孔和测量其尺寸,更换新轴承进行装配,试车后发现温升过高。拆检测量时,发现轴承座孔已变形,使轴承外圈部分受挤压,导致轴承的径向间隙变小,其滚动体转动不均匀,磨损加剧。轴承内圈与轴间隙过大,轴承内圈随滚动体与轴一起转动,出现摩擦使轴承发热、振动。
During the assembly process, the inner hole was not polished and its size was measured, and the new bearing was replaced for assembly. After the test run, the temperature rise was found to be too high. During the disassembly and measurement, it is found that the bearing pedestal hole has been deformed and the outer ring of the bearing is squeezed, which leads to the decrease of the radial clearance of the bearing, the uneven rotation of the rolling element and the aggravation of the wear. The clearance between the bearing inner ring and the shaft is too large, and the bearing inner ring rotates with the rolling element and the shaft, resulting in friction, heating and vibration of the bearing.
2.装配时轴承加热温度控制不当。
2. Improper control of bearing heating temperature during assembly.
在加热操作时调试轴承加热器温度过高,则会使其产生回火而致硬度和精度降低,从而轴承温度升高,导致轴承加剧磨损损坏。
If the temperature of the commissioning bearing heater is too high during the heating operation, it will produce tempering and reduce the hardness and accuracy, so that the bearing temperature will rise and the bearing wear will be aggravated.
3.装配时轴承间隙调整不当。
3. Improper adjustment of bearing clearance during assembly.
在实际工作中,很多安装有时只凭手感进行调试,间隙过大或者过小,不能满足生产需要。若轴向间隙过小时,易引起轴承发热,加速点蚀,甚至使滚动体卡死或胶合损坏;若轴向间隙过大,运动副的冲击力加大,刚度降低,则会导致运转中产生异声,甚至会造成严重振动或使保持架损坏。
In the actual work, many installation sometimes only by hand debugging, gap is too large or too small, can not meet the production needs. If the axial clearance is too small, it is easy to cause bearing heating, accelerate pitting, and even make the rolling element stuck or glued damage; if the axial clearance is too large, the impact force of the moving pair increases, and the stiffness decreases, it will cause abnormal sound in operation, and even cause serious vibration or damage to the cage.
                                                   移动碎石机租赁
二、油封问题
2、 Oil seal problem
油封是用于密封机械设备中旋转轴的封油用密封元件,而腔体基本上是静止的,所以油封又称旋转轴唇形密封圈。对于带副唇的油封,其副唇起防尘作用,防止杂质侵入,以延长油封寿命,但副唇处往往润滑不良,摩擦力较大,造成油封干摩擦而损坏,所以安装双唇油封时一定要在双唇之间填满润滑脂。
Oil seal is used to seal the rotating shaft of mechanical equipment, and the cavity is basically static, so oil seal is also called rotating shaft lip seal ring. For the oil seal with auxiliary lip, the auxiliary lip plays a role of dust prevention, preventing impurities from invading, so as to extend the service life of the oil seal. However, the auxiliary lip is often poorly lubricated, with high friction, resulting in damage due to dry friction of the oil seal. Therefore, when installing the double lip oil seal, it is necessary to fill grease between the two lips.
三、间隙问题
3、 Gap problem
在装配过程中,如果没有仔细校对隔套尺寸,进行组装试车,在一定时间后温度会快速上升。轴承外圈尺寸由端盖与轴承座止口已确定,隔套尺寸减小,内圈尺寸将由圆螺母调节,然后压紧,轴承的轴向间隙变小,使其运转过程中发热。
In the assembly process, if the spacer size is not checked carefully and the assembly test run is carried out, the temperature will rise rapidly after a certain period of time. The outer ring size of the bearing has been determined by the end cover and the end stop of the bearing seat, the spacer size is reduced, the inner ring size will be adjusted by the round nut, and then compressed, the axial clearance of the bearing becomes smaller, so that it will heat up in the process of operation.
四、润滑问题
4、 Lubrication problems
轴承中的润滑脂不宜过多,加脂量过大,会使摩擦力矩加大,轴承温度升高;而加脂量过少,则不能获得可靠润滑而发生干摩擦。一般来讲,适宜的加脂量为轴承内总空隙体积的1/3~1/2,因此,要按照使用要求,定期注适量的润滑脂。
Too much grease should not be used in the bearing. Too much grease will increase the friction torque and temperature of the bearing. Too little grease will not obtain reliable lubrication and cause dry friction. Generally speaking, the appropriate amount of grease is 1 / 3 ~ 1 / 2 of the total volume of the gap in the bearing. Therefore, it is necessary to inject proper amount of grease regularly according to the use requirements.
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