advantage:

1. Solid structure. It can withstand the impact, impact, smashing, pressing and other external forces of coal, gangue or other materials.

2. It can adapt to the needs of uneven and curved floor of coal mining face, and can withstand vertical or horizontal bending.

3. The body is short and easy to install.

4. It can also be used as a track for the operation of the shearer.

5. It can run in the reverse direction, which is convenient to deal with the bottom chain accident.

6. It can be used as the fulcrum of the front section of the hydraulic support.

7. The structure is simple, and the material can be fed or discharged at any point along the conveying length.

8. The casing is airtight, which can prevent dust from flying and polluting the environment when conveying materials.

9. When there is no casing at the tail, and the scraper is inserted into the material pile, the material can be reclaimed and conveyed by itself.

  shortcoming:

1. The no-load power consumption is relatively large, which is about 30% of the total power.

2. It is not suitable for long-distance transportation.

3. Birth off the chain, jumping the chain

4. It consumes a lot of steel. High cost.