Excavator slewing mechanism maintenance Do you know these points?

Excavator slewing mechanism maintenance Do you know these points? The swing motor of the excavator is composed of components such as a slewing motor, a reducer, a rotating ring gear, and a rotating center joint. It is an important part of the excavator. Therefore, in daily maintenance, we should pay great attention to its maintenance work. Today, we will follow the pace of Xiaobian to learn how to properly maintain the excavator slewing mechanism.

Big turntable

The rotary large turntable is composed of a rotary large ring gear, a reducer, and a central section. In the daily life, the cover on the side of the boom base can be picked up to check the lubrication of the large ring gear and the wear of the ring gear. When the machine is used for a long time, the dust ring at the center of the slewing will be aging. Once it is exposed to rain, the rain will penetrate into the large ring gear along the sag of the center of the slewing ring. Water will seriously shorten the service life of the excavator's rotating ring gear.

It is also necessary to prevent moisture from penetrating into the butter in the cavity, and to prevent the lubricating property of the butter from being diluted with water to be weakened. In addition, the ring gear is in the state of rainwater infiltration for a long time, which causes the ring gear to fall off, which causes the noise of the machine to eventually cause the loss of the ring gear.

Therefore, the slewing gear should be replaced every year. Each 20 ton machine should be filled with butter about 36 liters, and the habit of regularly opening the boom base and the square front cover of the frame, and timely gear ring and Detailed inspection of lubrication conditions. If water is found, the accumulated water can be drained by opening the bottom cavity cover.

Motor

The maintenance cycle of the lubricating oil of the swing motor is 1000 hours. In daily operation, we must observe the quantity of the rotating lubricating oil from the dipstick. In some cases, the abnormal loss of the lubricating oil will be found. We will open the large ring gear window and check the lubrication. Whether the oil leaks into the large ring gear cavity through the seal ring.

In addition to the above maintenance methods, we also regularly check whether the ring gear bolts are loose and the slewing bearing dust seals are damaged. Some fine cracks on the outside will be covered by dirt. If these cracks are not found in time, it may cause the turntable to crack.

Bearing

Here, Xiaobian should specifically emphasize that many owners have certain misunderstandings in the maintenance of slewing bearings. They believe that slewing bearings and small arms should use the same lubricating oil and keep the habit of adding them every day. I don't know if this is a great mistake. This will not only save the function, but will increase the dust ring running of the slewing bearing.

The correct curing method, the correct addition time of the slewing bearing lubrication is 250 hours. Rotate the machine while adding butter and add the oil once every 15 degrees. According to the difference of the frequency and time of the operation, the butter addition cycle can be finely adjusted, and the lubrication process can be basically performed once a week.

Excavator slewing mechanism maintenance, do you learn the above points? How to properly maintain the slewing mechanism in daily work is an important knowledge that we learn together. Only by doing well in machine maintenance can we have a better performance in future operations.