Excavator off-chain, commonly known as chain-off, refers to the track being separated from the track formed by the drive wheels, rollers, guide wheels, and carrier chain wheels. Because excavators often work in some harsh environments, and the crawler is a component that directly contacts the ground, when the operating ground is harsh and the operation is improper, it often leads to off-chain. Below we will list a few common reasons, and analyze how to avoid chains.
The reason why the excavator fell off the chain
There are many reasons for the track derailment, the first is the external reason, too rough road surface will make the track shoe force unbalanced, causing the track to detach. Second, improper operation by the driver and excessive roughness in forward and turn operations may also cause the track to derail. In addition to the above two external reasons, the failure of the excavator chassis itself is also a cause that cannot be ignored. Common failures of the chassis are:
1. Because the radial planes of the wheels forming the track are not in the same plane, that is, the track is uneven, and it cannot fit the track well, the track will not run smoothly, which will eventually cause the track to leave the track.
2. The track is too loose. This is easy to understand. The loose track will have a relatively large slack during cornering operations or on uneven ground. The track cannot play a good guiding role, and track derailment is inevitable. .
3. Due to the excessive wear of the chain guard, the chain guard cannot properly limit the track, and the track shoe swings too much, causing off-chain.
How to avoid chains
Now that we understand the reasons for the track derailment, we can take the right medicine and avoid the occurrence of off-chain in time, so how can we avoid it?
1. When operating or turning on a harsh construction site on the ground, if you find signs of the initial track derailment, you should stop in time and lift the crawler for a few revolutions to return the crawler to the correct position.
2. For the rotating shafts of driving wheels, supporting wheels, guide wheels, and supporting sprockets, butter should be frequently applied to provide adequate lubrication to avoid excessive wear.
3. The guide wheel can be moved back and forth to adjust the tightness of the track. Therefore, the guide wheel should be specially protected at ordinary times. Check whether the tension cylinder is working properly and whether the oil seal is leaking. Repair or replace it if it is damaged.
4. Check whether the chain guard plate is excessively worn or loose, and repair or replace it in time.
5. In addition, always check whether foreign materials such as stones and soil are caught in the crawler.