What to do in case of pipe chain conveyor failure?

What to do in case of pipe chain conveyor failure?
（1） Chain deviation:
The chain deviation of pipe chain conveyor is often seen in longer conveyors, which is often caused by poor installation. If the straightening of the whole machine is too large; The head wheel, tail wheel, guide rail and supporting wheel are misaligned; Each axle is not parallel; Inconsistent adjustment stroke of tail wheel can cause chain deviation. When paying attention to the above aspects, chain deviation generally will not occur or is easy to be corrected.
（2） Broken chain:
The causes of chain break are generally as follows;
1. The selection designer's calculation error or selection error, so that the selected chain can not meet the working tension during normal operation.
2. The manufacturing quality of the chain does not meet the design requirements, and the allowable load is lower than the value of model selection.
3. The split pin on the chain is worn and not replaced in time, so that the connecting pin shaft falls off and the chain is broken.
4. Large hard objects or iron parts are mixed in the conveying materials, and the chain is suddenly stuck during operation, overloaded and broken.
5. During the installation of the whole machine, the connecting flanges and guide rails between the casings move up, down, left and right due to carelessness or vibration and impact, resulting in the chain being stuck, overloaded and broken.

After the chain is broken, the chain link shall be replaced, the causes shall be analyzed, and corresponding measures shall be taken to prevent chain breaking again. In order to fundamentally prevent chain breakage, attention should be paid to each link of model selection, design, manufacturing, installation, use and maintenance.
（3） Floating chain:
When the floating chain occurs in the upper horizontal section of SMS type and ZMS type, a pressing plate can also be configured every 2m in the bearing machine slot to press the chain and force the chain not to float.
（4） Method for judging whether the chain is loose
Remove the feed inlet accessories, reach into the pipe, and lift the chain at the feed inlet of the pipe chain machine by hand. If the chain can be lifted upward, it indicates that the chain has been relaxed. If it cannot be lifted, it indicates that the chain is in a normal state. If the chain is loose, it is necessary to tighten the chain in the pipe by expanding the expansion joint.
（5） Expansion and tightening of expansion joint
1) Firstly, loosen the four fastening screws in the feed sprocket housing to ensure that the feed sprocket housing can move flexibly on the guide rail;
2) Then, the expansion joint shall be tightened, and the upper and lower expansion joints shall be tightened at the same time, which must be carried out synchronously. After tightening, lift the chain in the pipe again until the chain is tightened;
3) Finally, tighten the expansion joint screws and the fixing screws of the feed sprocket housing.