171S99 / 01-2 Zhangjiakou coal machine 630 series coal mine scraper conveyor dumbbell pin clamp

• Brief introduction： 171S99 / 01-2 type clamping block is used together with 171S99 / 01-1 dumbbell pin, and together with the limit pin, it forms a dumbbell pin assembly. The dumbbell pin for the fully-mechanized mining scraper conveyor generally adopts a circular design in the middle, which is relatively easy to rotate, which causes the instability of the middle groove connection. The clamping block is connected to the dumbbell pin through the bayonet, thereby preventing the dumbbell pin from rotating. In addition to the middle slot and the middle slot connected by dumbbell pins, you can also use a Japanese character ring (long ring).