Hot Selling Forging 40Cr Dumbbell Pin of Scraper Conveyor

Dumbbell pin is mainly used for the fixed connection between the middle trough of scraper conveyor, which has simple structure, convenient installation and reliable connection. Material: use high alloy steel, forging forming, tempering heat treatment, to ensure its strength.

The dumbbell pin jams the ends of the two adjacent middle slots by the thicker ends at each end and connects the two adjacent middle slots by the thin middle rod. In addition to the common dumbbell pins described above, there are two types of special shaped dumbbell pins - I-type dumbbell pins and day-type rings. The stress condition of dumbbell pin is more complicated. In the process of hydraulic support moving the middle trough, the dumbbell pin will be pulled by the adjacent middle trough and subjected to shear stress because the adjacent chute is not synchronized.

The dumbbell pin of scraper conveyor is a vulnerable part, and the common fault is fracture. The crack is in the neck of the dumbbell pin, mainly because the neck of the dumbbell pin is a region where stress concentration is relatively large. Under long-term working conditions, the dumbbell pin's neck crack growth area diffused to a certain extent, resulting in fatigue fracture, resulting in the fracture of the whole dumbbell pin.

Once the dumbbell pin of the scraper conveyor breaks, it will cause the middle trough dislocation or disconnection, and the chain of the scraper conveyor is affected by it, which is easy to break the chain, clip chain and disengage from the chute, affecting the production safety and normal production of the working surface of the scraper conveyor. Henan Shuanzhi main production inventory scraper, bolts, beams, dumbbell pins, teeth rail and other wear parts, welcome to inquire purchasing.