Scraper link blocks are critical components connecting the middle grooves of a scraper, ensuring stability during operation. Typically, a set includes one dumbbell pin and two link blocks, as well as two pins. These link blocks and pins serve to prevent the rotation of the scraper's dumbbell pin, thereby avoiding instability in the middle groove connections of the scraper conveyor during use. Although small in size, the scraper link blocks play a crucial role in maintaining the stable operation of the scraper.

The scraper machine block, dumbbell pin, and limit pin (spring pin) are collectively referred to as the dumbbell pin assembly of the comprehensive scraper machine. They work together to link and secure the middle groove of the scraper machine, ensuring smooth operation and guaranteeing safe production. Different types of scraper machine blocks include but are not limited to 126S, 107SA, 107SB, 196S, 150S, 154S, 171S, X180, ZX-02, etc. These blocks are paired with dumbbell pins and are among the daily required spare parts for the comprehensive scraper machine, with a significant number being purchased daily with the dumbbell pins.

A scraper conveyor is a continuous conveying equipment that uses moving scraper chains within a closed rectangular cross-section shell to transport bulk materials. The scraper chains are fully immersed in the material, making it crucial to maintain the stability of its operation. The design and application of scraper conveyor blocks effectively enhance the operational stability and safety of the scraper conveyor, making it an indispensable and important piece of equipment in industries such as coal mining and mining.