Asphalt mixing plants processing conveying belt run

Asphalt mixing plants processing conveying belt run       Asphalt mixing plants typically use cold conveyor belt conveying material, its main advantage is that large conveying capacity, continuous Simple operation and equipment construction and can achieve automatic control; however, belong to a common fault belt run, directly affect the drying cylinders Drying operations, but also affect the production efficiency mixing equipment. So, in asphalt mixing plants jobsite to solve Belt run problem is very important.  1. Belt run status      Conveyor belt conveyor belt is a ring closed structure. During normal operation, conveying belt for recycling Turnover, upstream and downstream Centerline tape parallel lines or on the same plane, small 4×2 6m3 concrete mixer truck smooth running, no jumping phenomenon, and along the width direction of the tape Offset is not more than 5% of the width of the tape; tape width direction thereof is exposed to tensile stress are equal. Conveyor belt conveyor running over Cheng, when the tape offset more than 5% of its width, called the belt deviation. In this case, the uplink and downlink tape center Line is not parallel or not in the same plane, which produce changes in the tape along the width direction of the tensile stress, tensile stress tape run laterality Increased.  2. Deviation reason      Conveyor belt machine running, the tape in contact with the roller, belt and roller interaction force between the tape and the roller in The degree of contact and friction coefficient on the width direction, and if the tape along the tape width direction of each point of contact with the roller drive Degrees are different, then the interaction force is not equal everywhere. When the force on the roller, the roller will be the role of moment M, So that the roller along the centerline of the tape clockwise rotation, but the roller is fixed on a tape machine frame body, does not allow This movement, so will cause the tape to move leftward way to balance roller sports trend, this tape will appear The deviation phenomenon. Factors causing a lot of tape deviation phenomenon, its main reasons: ① cold aggregate grading hopper or inclined belt dasion 12m3 concrete mixer truck 6×4 conveyor receiving hopper mounting position is incorrect, resulting in partial load tapes appear phenomenon. ② Conveyor belt conveyor frame body and the manufacture and installation of quality is not high rollers, resulting in between the tape and the roller force along Ranging from the direction of the tape width. ③ conveying adhesive quality tape machine tape is not high, resulting in uneven joints positive, there flare phenomenon. ④ poor performance tape itself, a groove is bad, resulting in partial load. ⑤ tape partial damage. Several factors will lead to more tension on the tape width direction is changed, and finally to Rally tape to side movement, causing belt run.  3. Corrective measures (1) Correction Principle     When the tape deviation to the left, the tape will run along the left side of the roller forward direction an angle, the tape entrusted friction roller Role. N can be decomposed into two components, namely component Nx along the tape width direction and cause the rotation of the roller tangential component Nt, so that corrective force is the force Nx tape moves to the right, to achieve correction. (2) corrective measures  ① Pinto will run on roller tape along the tape running direction laterality forward at an angle, usually 2 ° -4 °.  ② along the longitudinal direction of the tape two sets hot sale concrete mixer truck 8×4 with reversible automatic aligning roller rotating frame geometry automatically correct tape deviation from the role.  ③ on the conveying belt conveyor frame body anti-installed on both sides of the tape a number of partial vertical retaining belt run roller mandatory stop. ④ on the part of the roller surface treatment, the outer surface of the rollers were hanging plastic processing, surface to enhance the use of rubber tape Anti-lateral capacity.  ⑤ automatic correction system, namely the use of photovoltaic technology to monitor the conveying belt conveyor belt of operation, when the deviation of the tape Reaches a certain position, photoelectric switches receive signals and sends signals to control the operation of corrective devices, automatic correction of adhesive tape Side. This correction device There are two main types: mechanical and hydraulic.