Belt deviation is a large inclination belt conveyor
in the process of a common problem. If not timely adjustment, long-term deviation work not only on the belt marginal wear and tear, and will show the belt tear and scraping and other sudden incidents, so that the belt early failure.
Based on years of practical experience in production, we grasp some of the belt deviation and adjust the rules:
(1) tight running does not go loose: belt conveyor process, if the front and rear drum is not parallel to the middle line, forming the belt at both ends of the degree of tightness is not the same, the belt to the tight side of the move;
(2) run high does not run low: support roller is not parallel to the direction of the belt with the same horizontal position but a high one low, the belt will move to the high end;
(3) do not run before running: the roller is not working with the direction of the belt straight section, but one end before, one end (according to the belt direction), the belt will move back one end.
In accordance with the above rules, we summed up the following adjustment methods:
1. Adjust the roller method
Usually belt machine deviation scale is not too large, can be used to adjust the trough roller side roller active adjustment. When the belt is running, hit the groove on the roller on the roller, because the wheel and the belt edge of the friction effect of the direction of movement along the belt forward, the other side is relatively backward movement. At this point the belt moves toward the rear of the roller, until it returns to normal orientation. (Use the belt "do not run before the run" rule)
2. gravity adjustment method
If the belt heavy load work deviation, the belt can be deviation of the roller and the roller bracket appropriate heightening, so that the belt on the ore weight itself to attack a component of the belt deviation, until the belt back to normal position.
3. Vertical roll adjustment method
If the belt is always running to the side of the deviation, can be running in the belt side of the roller vertical equipment (vertical roller), on the one hand because the effect of the vertical roller to force the belt to reset, on the other hand because the vertical roller and belt
The edge of the friction effect, reducing the belt running side of the linear speed, the relative increase in the other side of the belt line speed, so that the belt to move to the other side until the reset.
4. Pad high profile deviation method
If the belt idling to a side of the total deviation, the relative side of the other side of the roller bracket appropriate pad height, front and rear mat array to the first pad of the roller, whisk slowly cut the height of the pad, belt Deviation will not see. (Using the belt "run high does not run low" rule)
5. Roller cleaning method
If the belt is running at a fixed point and fixed, it is necessary to check the point of the roller is not attack stall, slime slag to make the drum diameter larger or reducer, roller roll and other problems to adopt The corresponding approach.
6. Adjust the equipment method
If the belt machine work around the deviation, no fixed direction, clarify the belt lax, should adjust the tightening equipment, tension belt, deviation will be seen.
7. Narrow belt adjustment method
If the belt work in the nose or tail at the end, should first eliminate the head and tail roller parallelism error, in the nose or tail off the other side of the drum, with 2000 ¡Á 200mm narrow belt, And rotate with the drum. According to the formula of circular motion, we can see that the speed of the belt is v = ¦ØR, where ¦Ø is the rotational angular velocity of the drum and R is the radius of the drum. So the running side of the belt is not only the working speed is less than the other side, and the side of the belt loose on the other side. The belt will move to the other side until it reaches the normal orientation. And then remove the narrow belt, the belt machine is working properly.
8. Roller adjustment method
If the belt work in the roller at the deviation, clarify the drum when the level of transition, there are sticky material (so that the diameter or larger diameter) or the existence of equipment errors, should be based on the situation before and after the alignment of the roller level and parallelism, deviation Will not see.
9. Resistance does not see the law
If the belt is not too severe, the belt should be leaning off the side of the roller cleaning clean, and in the roller bearing a few drops of mechanical oil on the roller, reducing the idling roller frictional resistance, so that the idler roll speed acceleration, Can eliminate the belt deviation.
10. Streaming proofreading method
If the belt work, the idle does not run, heavy load work deviation, clarify the material in the belt at both ends of the uneven distribution, loading funnel is not correct, should be on the funnel or in the funnel equipment tray, change the material point of view to arrive at any time to adjust The direction of the material, so that the two ends of the belt spread evenly and common ore.
11. Joint proofing method
If the belt work to the side of the deviation, the biggest deviation in the joints, and the direction is not fixed, to clarify the belt connector is not correct, should be re-proof of the joints or glue the new joints.
12. Bracket proofing method
If the belt work to the same side of the deviation and in a more serious position, to clarify the book roller bracket or rack distortion is not correct, should be proof of the bracket or rack level test and straightness, replace the bad roller bracket.
13. Belt repair method
If the belt marginal wear serious, so that the two pull the belt is not common, the belt is not fixed position, should be based on the actual situation in time to repair the belt or replace the new belt.
14. Roller adjustment method
If the belt is always left to a side of the deviation, can be running in the belt side of the middle position, a set of roller bracket and the frame of the four fixed bolts to remove the three, leaving a shaft. When the belt to the side of the standing side of the deviation, the bracket can move along the direction of the belt forward to move the appropriate point of view; the other hand, when the belt toward the other side of the deviation, the bracket can move the appropriate direction of movement of the belt, Fixed, deviation will naturally not see. (The effect is equivalent to a groove-type roller, the use of the belt "do not run before the" rule)
15. Tighten equipment law
If the belt no load and heavy load work to the same side of the deviation, to clarify the degree of tightness of the two ends of the belt should be based on "do not run loose," the principle of adjusting the drum before or after the screw or counterweight and other equipment.
The above adjustment method 1, 3, 5, 9, 12, the same can be used to adjust the deviation of the belt back to the deviation, but the belt direction is necessary to return to the empty section with work direction prevail.