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In view of the above problems in the previous news, there are two solutions: one is to move the coal cleaner forward, so that the cleared coal is directly pulled away on the previous belt; The second is to increase the height of the roadway, so that the transfer point of the front and rear two belts has sufficient height within a certain range.

Sweep the adhesive tape of the coal dust that has been adhered to. As we all know, the raw coal transported from the mining face contains different degrees of moisture, and it is easy to bond the fine pulverized coal to the surface of the tape. If the pulverized coal bonded to the tape is not cleaned, the pulverized coal will be brought into the belt storage bin and the roller under the entire bottom belt in the empty section (i.e., the bottom belt), and it will be mainly deposited in the belt storage bin.

There are many shortcomings in these processing methods, such as clamping at both ends in two times, it is difficult to ensure the coaxiality of two turning, and the flexibility of roller rotation is poor, which will affect the service life of the roller.

In the structure of the bearing system, the sealing structure of the bearing is an important factor that cannot be ignored that affects the service life and running resistance of the roller. Because the seal is not good, the bearing is prone to failure40.