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How to deal with conveyor belt deviation

Author: Hou

Aug. 15, 2022

46 0 0

Tags: Rubber & Plastics

Conveyor belt deviation is the most common fault of belt conveyor, if not handled in time, let the conveyor belt deviation, will lead to severe friction between the conveyor belt and the frame, the edge of the conveyor belt is pulled or even torn, not only affect the life of the conveyor belt, but also easy to spread materials, affecting civilized production. Serious deviation of the conveyor belt will be separated from the roller and fall down, resulting in a major accident shutdown, therefore, in the belt conveyor installation, debugging, operation and maintenance work should pay special attention to the conveyor belt running state, to prevent the conveyor belt running deviation caused by accidents.


There are many factors affecting the deviation of conveyor belt, and the methods of correcting deviation are also different because of the different types of belt conveyor. The deviation phenomenon should be analyzed carefully and corresponding measures should be taken.


Fixed belt conveyor adopts fixed bracket, usually the outer end of both sides of the trough roller is installed at an Angle to the running direction of the conveyor belt. In this way, due to the existence of the inclination Angle of the idlers, the idlers on both sides produce a certain lateral thrust on the conveyor belt. When the conveyor belt is in the normal position, the thrust force on both sides is equal and opposite. When it goes off track, it goes off track


The lateral thrust of the side is greater than that of the other side, and the conveyor belt returns to its normal position under the action of this lateral thrust. It must be pointed out that there is relative sliding between the conveyor belt and the deflection roller in this method, which will lead to the wear of the conveyor belt. Therefore, the inclination Angle of the side roller can not be too large, generally 2°~3°. Therefore, this method is only effective in the case of small deviation force.


In the large fixed belt conveyor is generally used in the rotary centering roller, the use of this roller, if the conveyor belt runs off, the bracket is rotated by the action of the eccentric force of the conveyor belt, which is equivalent to the conveyor belt running on a deflection roller. At this time, a speed difference V is generated between the rotating circumferential speed of the idler (Vt) and the running speed of the belt (Vd), and the idler gives a transverse force to the conveyor belt to push the conveyor belt to move in the opposite direction to V and return to the normal position.

Adjustable belt deviation principle Schematic diagram The adjustable belt conveyor does not set the self-aligning roller, and the belt deviation adjustment is generally achieved by adjusting the position of the roller or roller. Deviation correction should be carried out when there is no load. The order of adjustment is generally from the unloading drum of the nose, along the running direction of the rubber belt, adjust the lower return section of the rubber belt first, and then adjust the upper bearing section. Common identification and adjustment methods for deviation phenomenon are as follows: 21 When the rubber conveyor belt runs deviation in a certain section of the frame, it should be observed whether the installation is tilted or not straight at first. If there is no problem with installation, the idler can be adjusted to rectify deviation.