Anti-reversal Control Methods of Conveyor Belt with Large Dip Angle
As upward transport belt conveyor with large angle, it is easily to occur accidents if the belt is under the heavy load, such as overload and shutdown, belt reversal, tape break . Also, it will destroy the frame and damage the equipment. What’s worse, it maybe cause casualties. Under this circumstances, it’s hard to clean the working site. So it is a great significance to do the anti-reversal control for belt conveyor with Large Dip Angle .
With regards to the methods of aiti-reversal and strip breaking protection for upward transport sidewall belt conveyor, the majority of manufactories use capture device, but it doesn’t have a better real effect. Thus, it’s better to adopt unidirectional rollers. When the belt goes up, the rollers will rotate accordingly, in this case, friction between upper belt and rollers is rolling friction. While if the belt is breakage and upper belt goes downward slide, at the same time rollers cannot do reverse rotation, on this occasion, friction between upper belt and rollers is sliding friction. In this way can it realize breaking. Generally, the material of belt is rubber while roller is steel. So static sliding friction coefficient between belt and roller is 0.9, and dynamic friction coefficient is 0.6-0.8. In addition, the angle of upward transport belt conveyor is less than 18°. When the belt is breakage and goes downward slide, as long as rollers don’t rotate accordingly, it can prevent belt from sliding if we install spilling flap on the frame. Taking the actual working conditions into consideration and according to the experimental measurement, coefficient of sliding friction between belt and roller is more than 0.45.
With regards to the methods of aiti-reversal and strip breaking protection for upward transport sidewall belt conveyor, the majority of manufactories use capture device, but it doesn’t have a better real effect. Thus, it’s better to adopt unidirectional rollers. When the belt goes up, the rollers will rotate accordingly, in this case, friction between upper belt and rollers is rolling friction. While if the belt is breakage and upper belt goes downward slide, at the same time rollers cannot do reverse rotation, on this occasion, friction between upper belt and rollers is sliding friction. In this way can it realize breaking. Generally, the material of belt is rubber while roller is steel. So static sliding friction coefficient between belt and roller is 0.9, and dynamic friction coefficient is 0.6-0.8. In addition, the angle of upward transport belt conveyor is less than 18°. When the belt is breakage and goes downward slide, as long as rollers don’t rotate accordingly, it can prevent belt from sliding if we install spilling flap on the frame. Taking the actual working conditions into consideration and according to the experimental measurement, coefficient of sliding friction between belt and roller is more than 0.45.
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