Like transmission chains, precision conveyor chains are also composed of a series of bearings, which are fixed by chain plates with restraining effects and have accurate positional relationships with each other.

Each bearing consists of a pin shaft and a sleeve, on which the rollers of the chain rotate. The pin shaft and sleeve are both surface hardened, allowing them to hinge together under high pressure and withstand the load pressure transmitted by the rollers and the impact during meshing. Various strength conveyor chains have a series of different chain pitches: the chain pitch depends on the strength requirements of the sprocket teeth and the rigidity requirements of the chain plate and universal chain. If necessary, the sleeve between the strengthened chain plates can exceed the rated chain pitch, but it is necessary to reserve the gap in the teeth to remove the sleeve.

Problem handling:

The deviation of the conveyor belt during operation is one of the common faults. There are various reasons for deviation, mainly due to low installation accuracy and poor daily maintenance. During the installation process, the head and tail rollers, as well as the intermediate rollers, should be on the same centerline as much as possible and parallel to each other to ensure that the conveyor belt is not biased or less biased.

In addition, the belt joint should be correct and the circumference on both sides should be the same.

If there is deviation during use, the following checks should be conducted to determine the cause and make adjustments. The frequently inspected parts and handling methods for conveyor belt deviation include:

(1) Check the misalignment between the transverse centerline of the roller and the longitudinal centerline of the belt conveyor. If the misalignment value exceeds 3mm, it should be adjusted using the long installation holes on both sides of the roller group. The specific method is which side the conveyor belt leans towards, which side of the roller group moves forward in the direction of the conveyor belt, or which side moves back.

(2) Check the deviation values of the two planes of the bearing seats installed on the head and tail frames. If the deviation between the two planes is greater than 1mm, the two planes should be adjusted within the same plane. The adjustment method for the head drum is: if the conveyor belt deviates towards the right side of the drum, the bearing seat on the right side of the drum should move forward or the left bearing seat should move back; If the conveyor belt deviates towards the left side of the drum, the bearing seat on the left side of the drum should move forward or the right bearing seat should move back. The adjustment method of the tail drum is exactly the opposite to that of the head drum.

(3) Check the position of the material on the conveyor belt. If the material is not centered on the cross section of the conveyor belt, it will cause the conveyor belt to deviate. If the material deviates to the right, the belt will run to the left, and vice versa. When using, the material should be centered as much as possible. To reduce or avoid such conveyor belt deviation, a baffle can be added to change the direction and position of the material.