Bucket elevators include belt bucket elevators, plate chain bucket elevators, chain bucket elevators, and other types of vertical lifting equipment widely used in agricultural product processing plants and grain bureaus. They have the advantages of large lifting height, stable lifting, small footprint, and good sealing, and are suitable for lifting powdered and small block materials.
The following are several common malfunctions of the device during use:
1. The hopper belt slips
(1) The bucket elevator uses the friction torque between the hopper belt and the head wheel drive shaft to lift materials. If the tension of the hopper belt is insufficient, it will cause the hopper belt to slip. At this point, the machine should be stopped immediately and the tensioning device adjusted to tighten the hopper belt. If the tensioning device cannot fully tension the hopper belt, it indicates that the stroke of the tensioning device is too short and should be readjusted.
The correct solution is to untie the hopper belt joint, adjust the tension device on the bottom wheel to the highest position, insert the hopper belt from the elevator head, pass through the head wheel and bottom wheel, and connect the head and tail, so that the hopper belt is in a tensioned but not tensioned state. Then fully tighten the tensioning device. At this time, the unused tensioning stroke of the adjusting screw of the tensioning device should not be less than 50% of the full stroke.
(2) When the hoist is overloaded, the resistance torque increases, causing the hopper belt to slip. At this point, the feeding amount of materials should be reduced and efforts should be made to ensure even feeding. If the slip cannot be improved even after reducing the feeding amount, it may be due to excessive material accumulation in the machine seat or the hopper being stuck by the guide material. The machine should be stopped for inspection and troubleshooting.
(3) The inner surfaces of the head wheel drive shaft and the hopper belt are too smooth, which reduces the friction between the two and causes the hopper belt to slip. At this point, a layer of adhesive can be applied to the inner surface of the drive shaft and hopper belt to increase friction.
(4) The head and bottom wheel bearings do not rotate properly, resulting in increased resistance torque and causing the hopper belt to slip. At this point, you can disassemble, wash, add oil or replace the bearings.
2. The hopper belt runs off center
(1) The improper installation of the head and bottom wheel transmission shafts is mainly reflected in the following aspects: firstly, the transmission shafts of the head and bottom wheels are in the same vertical plane and not parallel; Secondly, both transmission shafts are installed in a horizontal position and not in the same vertical plane; The third is that the two transmission shafts are parallel, in the same vertical plane, and not horizontal. At this point, the deviation of the hopper belt can easily cause collision between the hopper and the barrel, as well as tearing of the hopper belt. The machine should be stopped immediately to troubleshoot. Ensure that the transmission shafts of the head and bottom wheels are installed in the same vertical plane and in a horizontal position. The vertical deviation of the machine centerline at a height of 1000mm should not exceed 2mm, and the accumulated deviation should not exceed 8mm.
(2) The hopper belt joint is not aligned, which means that after the hopper belt is combined, the edge lines of the hopper belt are not on the same straight line. When working, the hopper belt is tightened and loosened on one side, causing the hopper belt to move laterally towards the tight side, resulting in deviation, insufficient material loading in the hopper, incomplete unloading, increased material return, decreased productivity, and in severe cases, causing the hopper belt to jam or tear. At this time, the machine should be stopped, the connector should be corrected and connected properly.

Article compilation: Guangdong bucket elevator www.zs-chsb.com/