The development of coal mining scraper conveyor in the production and construction of coal mine has roughly gone through three stages. So what is the main development trend of coal mining scraper conveyor as the production capacity of coal mining faces continues to increase.
The development of coal mining scraper conveyors in the production and construction of coal mines has roughly gone through three stages. The first stage was in the 1930s and 40s and was a removable coal mining scraper conveyor. The second stage was a bendable scraper conveyor made in Germany in the early 1940s. In the 1960s, due to the emergence of hydraulic supports, in order to meet the needs of comprehensive mining, coal mining scraper conveyor has developed to the third stage. High-power armored coughing heavy scraper conveyors have been developed, such as SGD-630 / 75, Models such as 630/180 belong to this stage.
With the continuous increase of the production capacity of the coal mining face, the main development trends of the coal mining scraper conveyor are:
1. Large transportation volume. Foreign advanced coal mining countries have developed coal mining scraper conveyors with hourly transport capacity up to 1500t (80s) and 3500t (90s).
2. Long transportation distance. In order to reduce the amount of coal pillar loss in the mining area and increase the length of the working face, the length of the coal mining scraper conveyor has reached more than 335 meters.
3. High power motor. The power of the motor has been developed up to 525kW for single-speed motors and 500 / 250kW for two-speed motors.
4. Long life. Due to the use of a large-diameter ring chain, the strength of the scraper chain is increased, and the life of the coal mining scraper conveyor is prolonged.
