24207 tunneling cut-off using SGB40 type scraper conveyor, the equipment has been used for a period of time, there are many failures, and the daily maintenance is large. The B800 electric drum belt conveyor replaces the original coal transportation task of the original scraper conveyor, and has won unanimous praise from users and maintenance personnel, and has achieved good economic benefits for the enterprise.

　　 2. The social and economic benefits of the project

Compared with the scraper conveyor, the electric drum belt conveyor can save a lot of equipment transportation and installation labor, greatly reduce the labor intensity and shorten the installation time; for short-distance roadways such as combined roadways, it can save a lot of equipment transportation and installation labor For short-distance reloading tasks, the electric drum belt conveyor is more energy-efficient, saves electricity, reduces the cost of coal per ton, and achieves tangible economic benefits. Manufacturing, use, and maintenance costs are considered based on the same transportation length of 100 meters.

　　 1. The market price of SGB620-40T is RMB 180,000; the head, tail, belt, and shelf of the B800/22kw electric drum belt conveyor are all repaired with the original old warehouse waste materials. Four people repaired for 4 days (total 2000 yuan). Under the same transportation conditions, the B800×22kw electric drum belt conveyor saves 179,200 yuan in cost compared with the SGB620-40T scraper conveyor.

　　2. Low maintenance cost: Compared with the scraper conveyor, the service life is longer, the maintenance and replacement amount of rotating and wearing parts is small, and the maintenance cost is low. Electric drum processing simple belt

　　3. The power of the scraper conveyor is 80kw, the power of the electric drum belt is 44kw, and the power is reduced by 36kw. The average monthly electricity saving is about 14256kwh, which is about RMB 8,000.

　　4. It is convenient for the civilized construction management of the transportation lane and improves the underground working environment. Because of the use of belt transportation, the crushing of lump coal on the raw coal transportation line was reduced, and the lump coal rate was increased by 2%, which increased economic benefits for the enterprise. 3. The main technical content of the project

　　1. Technical principles adopted

　　(1). Adopting double electric drum type belt head drive, new design and processing of simple belt tail, making the head and tail structure simple and greatly reduce the overall size. (Changed the traditional four-in-one arrangement of head motor, hydraulic coupling and reducer drive drum).

　　(1) The volume and weight of the electric drum are small, which is conducive to the transportation in the narrow environment of the underground gorge.

　　3. The belt tension is linearly shifted by the tensioning roller of the machine head. It adopts manual tension and the stroke is 1.5m, which is simple and easy to implement. The nose tensioning car and power supply equipment are eliminated, which greatly simplifies the structure of the nose. However, due to the small amount of tension of the short belt, it will not cause difficulty in tensioning.

　　4. The nose and tail of the machine can be fixed by ground anchor or pressing, which is easy to install.

　　5. The intermediate belt frame adopts the ordinary type 800 belt frame, which has strong versatility.

　　2. Key technology and innovative scraper conveyor technical parameters Model item SGW-40T scraper chain ring chain specification (mm) φ18×64 conveying capacity 150

In terms of conveying capacity and conveying length, the electric roller belt conveyor is much larger than the 40T scraper conveyor, and the power consumption of the electrical equipment is smaller than the 40T scraper conveyor. In terms of structural composition, the machine body is universal, and the head and tail are far away. It is simpler and lighter than ordinary 800 belt conveyor.