The scraper has the advantages of not being affected by the degree of cargo load and humidity, the height of the fuselage is small, easy to load, the length of the fuselage is convenient to adjust, the body is strong and can be broken in waterfalls, and the working surface of the medium. It is widely used. But its disadvantages are: high working resistance, high power consumption, serious wear of the chute, easy to break the chain during improper maintenance and use, and limited transportation distance.
