With the advancement of science and technology, coal mining technology has become increasingly mature, and coal mine underground conveyor equipment has been advanced from semi-mechanized to mechanized, from small to large.
The development of coal mining scraper conveyor in the production and construction of coal mines has roughly gone through three stages.
The first stage was a detachable coal mining scraper conveyor in the 1930s and 40s. It can only be laid in a straight line on the working surface. As the working surface advances, it needs to be disassembled, moved and assembled manually. Scraper chain is a plate type, mostly single chain, such as V-type, SGD-11, SGD-20 and other low-power light-weight coal mining scraper conveyor.
The second stage is the bendable coal mining scraper conveyor made by Germany in the early 1940s. It cooperated with the coal cutter and metal bracket to realize mechanized coal mining. This scraper conveyor is suitable for conditions such as uneven floor, convexity, unevenness, and horizontal bending. It does not need to be disassembled during relocation, and the amount of coal is also increased. Representative products.
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, and developed high-power armored coughing heavy scraper conveyors, such as SGD-630 / 75, Models such as 630/180 belong to this stage.
