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Dumbbell pin is the key part of chute connection of scraper conveyer. The dumbbell pin and the middle trough work together to realize the push slip of the scraper conveyor, and the scraper conveyor bends to move to the side of the coal wall through the thrust of the hydraulic support.

The dumbbell pin of the scraper is simple in structure, convenient in installation, reliable and firm in connection. It is one of the most used parts in the supporting members of the scraper conveyor. There are four dumbbell pin pits on each middle trough for the connection of the four dumbbell pins. Under normal circumstances, fully mechanized coal mining face with scraper conveyor according to the factory length of the different equipped with 200-300 dumbbell pins.

Mine scraper dumbbell pin is used in a large number of key connecting parts, so its quality and processing precision requirements are higher. The dumbbell pin is generally forged from the blank, because the shape of the forged blank is irregular, the dumbbell pin is generally used for milling with the processing technology device, to ensure the size and accuracy of the workpiece.

Dumbbell pin is easy to break during use. Although the force generated by the thrust will act directly on the middle trough, the middle trough will be deformed. But in this case, the dumbbell pin of the mine scraper can also fracture, which is mainly caused by the following two factors: first, the dumbbell pin fracture of the middle slot dumbbell base due to stress deformation; Second, the distance between two adjacent middle slots is too large, which leads to fatigue fracture of dumbbell pin due to too much pulling force.

Above is the mine scraper dumbbell pin brief introduction. Henan Shuangzhi Machinery production of various types of scraper parts, transfer machine parts, hydraulic bracket parts, more product information and figure number, please contact us for verification.