In general, for the automatic production line repair handling of power truss manipulator manufacturers, Chinese enterprises mainly use the following methods: "scheme pre repair system+point repair system":

1. A specially assigned person checks each component according to the spot check list every day, and immediately eliminates any problems found. The repair window is usually used to repair minor defects. Even if the repair requires downtime, the downtime is also very short, which will not affect the operation of the automated assembly line.

2. Formulate a monthly repair plan according to the monthly point inspection. The production line shall be shut down for one day or one shift every month to repair the defects of the production line in batches.

3. An annual repair plan is also prepared every year. The annual repair is similar to the overhaul. The downtime of the production line is long (1~2 weeks, even up to 1 month). There are many repair contents and high repair costs.

4. Use condition monitoring skills for key equipment to monitor the operation of equipment online.

These repair theories and methods are helpful to improve the level of repair handling of automatic production lines. However, the problem of collaborative repair of many equipment in the automatic production line and the problem of demand prediction for repair spare parts have not been well handled.

Automatic production line synchronous repair thinking

Handling the problem of collaborative repair of production line equipment

In the early stage, Chinese scholars put forward the idea of simultaneous repair according to the system theory and production batch method:

(1) The optimal repair decision plan determined by a single component is not optimal from the perspective of the system. As for the complex system composed of several different parts that are connected with each other, when repairing the decision plan, not only the characteristics of the parts should be considered, but also the economic correlation and fault correlation between the parts should be considered.

(2) The repair window is used to integrate batch processing for potential defects in the production line and reduce downtime for lax repair. The synchronous repair thought proposed by Chinese scholars undoubtedly has great application value and is widely accepted by peers.